A roll bending device capable of heating and ultrasonic straightening of workpieces

Abstract

The application provides a kind of heating and ultrasonic straightening stress relieving roll bending equipment for workpiece, belongs to the technical field of roll bending equipment.It solves the problem that the existing roll bending equipment can only be used for roll bending processing of materials at room temperature.The roll bending equipment of the application comprises a base, a roll bending assembly, a guide rail, a heating assembly and an emitter.In the application, when the workpiece is roll bending processed, the workpiece needs to pass through two heating assemblies and the roll bending assembly, and then the heating assembly and the emitter are turned on to make the emitter generate ultrasonic waves, the heating assembly generates high-frequency heating for the workpiece inside, and the emitter is pressed against the workpiece to make the ultrasonic waves generated by the emitter directly act on the workpiece.In this way, when the roll bending assembly bends the workpiece, the high-frequency heat generated by the heating assembly can effectively improve the plasticity of the workpiece, the ultrasonic waves release the stress inside the workpiece, and effectively correct the springback of the workpiece.

Description

Technical Field

[0001] This invention belongs to the technical field of roll bending equipment, and relates to a roll bending device that can heat and ultrasonically straighten and relieve stress on workpieces. Background Technology

[0002] Roll bending is a process that bends sheet or profile material using a rotating roller. The conventional method involves bending at room temperature. However, bending materials at room temperature results in poor plasticity, significant thinning, and even cracking. Room temperature roll bending also suffers from unstable springback and inadequate stress release, leading to bending failures. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a roll bending device capable of heating and ultrasonically straightening and stress relief of workpieces.

[0004] The objective of this invention can be achieved through the following technical solution: a roll bending device capable of heating and ultrasonically straightening and stress relief of a workpiece, comprising:

[0005] Base;

[0006] The bending assembly is located on the base;

[0007] A pair of guide rails are mounted on the base. The two guide rails are respectively located on both sides of the bending assembly, and the central axes of the two guide rails intersect. Each guide rail is movably equipped with a heating assembly and an ultrasonic transmitter. The workpiece passes through the heating assembly, and the positions of the heating assembly and the transmitter on the guide rail change accordingly as the workpiece bends.

[0008] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of a workpiece, there is an included angle between the two guide rails, which is an acute angle or a right angle.

[0009] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of workpieces, each guide rail has a left fixing plate connected to the base at one end and a right fixing plate connected to the base at the other end.

[0010] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of workpieces, each guide rail is movably provided with a movable block for connecting the transmitter, and the left fixed plate is provided with a left power component that drives the movable block to move.

[0011] In the aforementioned rolling bending device capable of heating and ultrasonically straightening and stress relief of a workpiece, the left power component includes a first cylinder body disposed on a left fixed plate, and a first cylinder rod connected to a moving block is movably disposed on the first cylinder body.

[0012] In the aforementioned rolling bending device capable of heating and ultrasonically straightening and stress relief of a workpiece, the left power component includes a spring with one end connected to the left fixed plate, the other end of the spring connected to the moving block, and the guide rail passing through the spring.

[0013] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of a workpiece, a protective block is provided on the end of the transmitter away from the left fixed plate.

[0014] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of a workpiece, each heating component includes a heating coil, and each guide rail is movably provided with a movable block for connecting the heating coil.

[0015] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of a workpiece, a second cylinder body is provided on the right fixed plate, and a second cylinder rod connected to the movable block is movably provided on the second cylinder body.

[0016] In the aforementioned rolling bending equipment capable of heating and ultrasonically straightening and stress relief of a workpiece, a detection component is provided on the base, and the detection component is electrically connected to the second cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When performing roll bending on a workpiece, the workpiece needs to be passed through two heating components and then through the roll bending component. The heating components and the transmitter are then turned on so that the transmitter generates ultrasonic waves. The heating components heat the workpiece inside at high frequency, and the transmitter is pressed against the workpiece so that the ultrasonic waves generated by the transmitter can directly act on the workpiece. In this way, when the roll bending component bends the workpiece, the high-frequency heat generated by the heating components can effectively improve the plasticity of the workpiece, and the ultrasonic waves release the internal stress of the workpiece and effectively correct the springback of the workpiece.

[0019] 2. In Embodiment 3, by using the linkage between the detection component and the second cylinder, the heating coil can be moved more flexibly, thereby better adapting to the bending changes of the workpiece. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the bending equipment in Example 1.

[0021] Figure 2 yes Figure 1 A top view of the bending equipment after the workpiece has been removed.

[0022] Figure 3 It is an assembly diagram of the guide rail, transmitter, and heating components.

[0023] Figure 4 This is an assembly diagram of the guide rail, spring, and launcher in Embodiment 2.

[0024] Figure 5 This is a schematic diagram of the bending equipment in Example 3. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0026] like Figure 1 — Figure 3 As shown, the present invention provides a bending device for heating and ultrasonically straightening and stress relief of workpieces, comprising a base 100, a bending assembly 200, a guide rail 110, a heating assembly 300, and a transmitter 400.

[0027] A bending assembly 200 is mounted on a base 100, and a pair of guide rails 110 are also mounted on the base 100. The two guide rails 110 are positioned on opposite sides of the bending assembly 200, and their central axes intersect. An angle α is formed between the two guide rails 110; this angle α is either acute or right. Each guide rail 110 is movably mounted with a heating assembly 300 and an ultrasonic transmitter 400. The workpiece passes through the heating assembly 300. The positions of the heating assembly 300 and the transmitter 400 on the guide rails 110 change accordingly with the bending of the workpiece. During the bending process, the workpiece is passed through the two heating assemblies 300 and the bending assembly 200 before the heating assemblies 300 and transmitter 400 are activated, causing the transmitter 400 to generate ultrasonic waves. The heating assembly 300 heats the workpiece inside the workpiece at high frequency, and the transmitter 400 is pressed against the workpiece so that the ultrasonic waves generated by the transmitter 400 can directly act on the workpiece. In this way, when the bending assembly 200 bends the workpiece, the high-frequency heat generated by the heating assembly 300 can effectively improve the plasticity of the workpiece, the ultrasonic waves release the internal stress of the workpiece, and effectively correct the springback of the workpiece. Furthermore, when the bending assembly 200 forces the workpiece to bend, the positions of the heating assembly 300 and the transmitter 400 on the guide rail 110 will also change with the shape of the workpiece. In this way, the heating assembly 300 will continuously heat the bending point of the workpiece, and the transmitter 400 will always act on the bending point of the workpiece to further improve the plasticity of the workpiece, release the internal stress of the workpiece, and correct the springback of the workpiece.

[0028] Each guide rail 110 has a left fixed plate 120 connected to the base 100 at one end and a right fixed plate 130 connected to the base 100 at the other end. Each guide rail 110 has a movable block 111 for connecting the transmitter 400. The left fixed plate 120 has a left power member 500 for driving the movable block 111 to move. When the bending assembly 200 forces the workpiece to bend, the left power member 500 will drive the movable block 111 to move along the trajectory of the guide rail 110. In this way, the position of the transmitter 400 on the guide rail 110 can be changed, so that when the transmitter 400 is aligned with the bend of the workpiece, the transmitter 400 will not obstruct the normal bending of the workpiece, thereby allowing the stress at the bend of the workpiece to be released smoothly and effectively correcting the springback of the workpiece.

[0029] The left power unit 500 includes a first cylinder 510 disposed on the left fixed plate 120. A first cylinder rod 511 connected to the moving block 111 is movably disposed on the first cylinder 510. When the workpiece bends, the first cylinder 510 will drive the first cylinder rod 511 to extend or retract, so that the moving block 111 moves relative to the guide rail 110, that is, the transmitter 400 moves relative to the guide rail 110.

[0030] Each heating component 300 includes a heating coil 310, which can perform high-frequency heating on its interior. Each guide rail 110 is movably provided with a movable block 112 for connecting the heating coil 310. The right fixed plate 130 is provided with a second cylinder 131, and the second cylinder 131 is movably provided with a second cylinder rod 131a connected to the movable block 112.

[0031] When the bending assembly 200 forces the workpiece to bend, the second cylinder 131 will drive the second cylinder rod 131a to extend and retract, so that the movable block 112 moves relative to the guide rail 110. That is, the heating coil moves relative to the guide rail 110. In this way, the position of the heating coil on the guide rail 110 can be changed, so that when the heating coil is aligned with the bend of the workpiece, the heating coil will not touch the workpiece, thereby making the bend of the workpiece have better plasticity.

[0032] Furthermore, before performing roll bending on the workpiece, people can make advance settings according to the degree of bending of the workpiece. Specifically, in each time period, the extension and retraction amount of the first cylinder 510 driving the first cylinder rod 511 and the extension and retraction amount of the second cylinder 131 driving the second cylinder rod 131a are set, so as to realize the position change of the transmitter 400 on the guide rail 110 and the position change of the heating coil 310 on the guide rail 110 in each time period.

[0033] The bending assembly 200 includes a fixed pressure roller 210 and a left pressure roller 220 and a right pressure roller 230 that are movable relative to the base 100. During operation, the workpiece needs to be passed between the left pressure roller 220 and the fixed pressure roller 210, and between the right pressure roller 230 and the fixed pressure roller 210. Then, by using a drive element (not shown in the figure) to control the movement of the left pressure roller 220 and the right pressure roller 230, the left pressure roller 220 or the right pressure roller 230 can be moved relative to the base 100, thereby bending the workpiece.

[0034] Example 2

[0035] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the structure of the left power component 500 has been changed in this embodiment.

[0036] Specifically, the left power component 500 includes a spring 520 connected at one end to the left fixed plate 120, and the other end of the spring 520 connected to the moving block 111. The guide rail 110 passes through the spring 520. A protective block 410 is provided on the end of the transmitter 400 away from the left fixed plate 120. When the workpiece passes through the heating coil 310, the end of the transmitter 400 with the protective block 410 needs to be pressed against the workpiece. The spring 520 will generate elastic force. When the workpiece bends, the workpiece will exert force on the transmitter 400 or separate from the transmitter 400, and the spring 520 will contract or extend accordingly, so that the transmitter 400 moves relative to the guide rail 110, thereby ensuring that the transmitter 400 always sticks to the bend of the workpiece and that the ultrasonic waves can always act on the bend of the workpiece.

[0037] Furthermore, the protective block 410 separates the workpiece from the transmitter 400, thereby better protecting the transmitter 400 and preventing wear on the head of the transmitter 400.

[0038] In this invention, the protective block 410 is made of a material that transmits ultrasonic waves well, such as a metal.

[0039] Example 3

[0040] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment does not use the pre-set extension and retraction amount of the second cylinder rod 131a, but instead uses the linkage between the detection component 140 and the second cylinder 131 to change the position of the heating coil 310.

[0041] Specifically, a detection component 140 is provided on the base 100. The detection component 140 is electrically connected to the second cylinder 131. Furthermore, the detection component 140 is a camera used to monitor the relative position between the workpiece and the heating coil 310. That is, when the workpiece is bent, the distance between the workpiece and the inner wall of the heating coil 310 will change. At this time, the camera is always monitoring. Afterward, the camera will transmit the signal to the second cylinder 131. The second cylinder 131 drives the second cylinder rod 131a to extend and retract, so as to change the position of the heating coil 310 on the guide rail 110 accordingly. In this way, the heating coil 310 can change its position more flexibly, thereby better adapting to the bending changes of the workpiece.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A roll bending device capable of heating and ultrasonically straightening and stress-relieving a workpiece, characterized in that, include: Base; The bending assembly is located on the base; A pair of guide rails are mounted on the base. The two guide rails are respectively on both sides of the bending assembly, and the central axes of the two guide rails intersect. Each guide rail is movably equipped with a heating assembly and an ultrasonic transmitter. The workpiece passes through the heating assembly, and the positions of the heating assembly and the transmitter on the guide rail change accordingly as the workpiece bends. Each guide rail has a left fixing plate connected to the base at one end and a right fixing plate connected to the base at the other end; Each of the heating components includes a heating coil, and each of the guide rails is movably provided with a movable block for connecting the heating coil; The right fixed plate is provided with a second cylinder body, and a second cylinder rod connected to the movable block is movably mounted on the second cylinder body; The base is equipped with a detection component, which is electrically connected to the second cylinder.

2. The roll bending equipment according to claim 1, capable of heating and ultrasonically straightening and stress-relieving a workpiece, is characterized in that, The two guide rails are at an angle, which is either an acute angle or a right angle.

3. The roll bending equipment according to claim 1, capable of heating and ultrasonically straightening and stress-relieving a workpiece, is characterized in that... Each of the guide rails is movably provided with a movable block for connecting the transmitter, and the left fixed plate is provided with a left power component that drives the movable block to move.

4. A roll bending device according to claim 3, capable of heating and ultrasonically straightening and stress-relieving a workpiece, characterized in that, The left power component includes a first cylinder body disposed on the left fixed plate, and a first cylinder rod connected to the moving block is movably disposed on the first cylinder body.

5. A roll bending device according to claim 3, capable of heating and ultrasonically straightening and stress-relieving a workpiece, characterized in that, The left power component includes a spring with one end connected to the left fixed plate, and the other end of the spring connected to the moving block. The guide rail passes through the spring.

6. A roll bending device according to claim 5, capable of heating and ultrasonically straightening and stress-relieving a workpiece, characterized in that, A protective block is provided on the end of the transmitter away from the left fixed plate.

Images