Online detection device for welding workpiece

Abstract

The utility model provides an on-line detection device used for welding workpieces, comprising a detection rack used for placing a workpiece to be detected; the mechanical arm is arranged on one side of the detection rack, an adsorption device is arranged at the movable end of the mechanical arm, and the adsorption device comprises at least two movable adsorption assemblies capable of moving in the length direction of the adsorption device; and the visual detection device is arranged on the adsorption device, the visual detection device comprises a camera, and the camera can rotate around the length direction of the adsorption device. According to the utility model, automatic, unmanned, accurate and reliable detection of a welding workpiece can be realized, and the device can be widely compatible with various production lines; the visual recognition technology is adopted to automatically recognize whether the size, the welding seam and the like of the workpiece are qualified or not, the detection convenience and accuracy are improved, the detection efficiency is greatly improved, meanwhile, quality control becomes reliable, and large-scale batch production can be achieved easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical manufacturing processing technical field, concretely relates to an online detection device for welding workpiece. BACKGROUND

[0002] At present, the welding operation detection of the drying machine grain box plate mainly depends on artificial visual inspection and traditional measuring tools such as tape. This method has several significant problems: first, the detection accuracy is not high; second, the human factor interference is large; third, the efficiency is low; finally, since the detection and production process cannot be synchronized, the detection result is often not timely. These problems not only easily lead to economic losses, but also make quality control difficult, which is not conducive to large-scale batch production.

[0003] In summary, an online detection device for welding workpiece is urgently needed to improve accuracy, reduce human factors, improve efficiency, and achieve synchronization of detection and production to ensure economic benefits and product quality. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an online detection device for welding workpiece, aiming at solving the problems of artificial visual inspection and tape detection of welding workpiece, and the specific technical solution is as follows:

[0005] An online detection device for welding workpiece, comprising:

[0006] A detection rack for placing the workpiece to be detected;

[0007] A mechanical arm arranged on one side of the detection rack, the movable end of the mechanical arm is provided with an adsorption device, the adsorption device comprises at least two groups of movable adsorption components that can move along the length direction of the adsorption device;

[0008] A visual detection device arranged on the adsorption device, the visual detection device comprises a camera that can rotate around the length direction of the adsorption device.

[0009] Preferably, the detection rack is provided with a rack base, a jaw assembly and a support assembly; the support assembly is arranged on the rack base and their length directions are parallel, the support assembly is used for placing the workpiece to be detected; the jaw assembly comprises a clamping block and an expansion piece, both sides of the support assembly are provided with a clamping block, and the clamping block is connected with the movable end of the expansion piece; the clamping blocks on both sides of the support assembly simultaneously act to clamp or release the workpiece.

[0010] Preferably, the gripper assembly has at least two gripping blocks arranged on one side of the support assembly, and each gripping block of the gripper assembly on the same side of the support assembly is mounted on a connecting plate, the connecting plate being connected to the movable end of the telescopic member.

[0011] Preferably, the platform base is provided with a slide rail, and the connecting plate is slidably disposed on the slide rail.

[0012] Preferably, the test bench base is provided with a positioning block and a detection device at one end in the longitudinal direction.

[0013] Preferably, the adsorption device includes a mounting base, a second slide rail, and a driving component. The movable adsorption component is slidably disposed on the second slide rail and is driven to move by the driving component.

[0014] Preferably, the driving assembly includes a driving component, a driving wheel, a driven wheel, and a transmission belt. The driving wheel and the driven wheel are respectively disposed at both ends of the mounting base. The driving wheel is connected to the output end of the driving component. The transmission belt is sleeved on the driving wheel and the driven wheel. The movable adsorption assembly is fixedly connected to the transmission belt.

[0015] Preferably, the mounting base is provided with a fixing block, an adjusting block, and an adjusting bolt. The adjusting block is provided with a slotted hole, and the mounting base is provided with a mounting hole. After the slotted hole on the adjusting block is aligned with the mounting hole, the adjusting block is fixedly mounted on the mounting base using a bolt assembly. The fixing block is fixedly mounted on the mounting base and is provided with a threaded hole. After the adjusting bolt is screwed into the threaded hole, its end abuts against the adjusting block. The driven wheel is mounted on the adjusting block.

[0016] Preferably, the adsorption device further includes a fixed adsorption component, which is fixedly disposed at the center of the mounting base, and movable adsorption components are symmetrically arranged on both sides of the fixed adsorption component.

[0017] Preferably, the visual inspection device includes a camera, a mounting base, a second driving component, and a connecting frame. The second driving component is mounted on the adsorption device via the mounting base, the connecting frame is connected to the output shaft of the second driving component, and the camera is fixedly mounted on the connecting frame.

[0018] The application of the technical solution of this utility model has the following beneficial effects:

[0019] The online detection device can realize automatic, unmanned and accurate and reliable detection on the welding workpiece, can be widely compatible with various production lines, adopts visual identification technology to automatically identify whether the size and welding seam of the workpiece are qualified, improves the convenience and accuracy of detection, greatly improves the detection efficiency compared with the manual visual inspection and tape detection mode, simultaneously makes the quality control reliable, and is favorable for realizing large-scale batch production.

[0020] The online detection device is provided with a movable adsorption assembly, uneven surfaces on the workpiece can be avoided through movement of the movable adsorption assembly, the position of the movable adsorption assembly can be adjusted according to the structure shape of the workpiece, workpiece detection requirements of different structure forms are adapted, and meanwhile, stable adsorption and transfer of the workpiece are ensured.

[0021] In the online detection device, the driven wheel is arranged on the adjusting block, the position of the driven wheel on the mounting base can be adjusted, the tension degree of the transmission belt is conveniently adjusted, normal transmission among the driving wheel, the driven wheel and the transmission belt is ensured, and the slipping phenomenon of the transmission belt is prevented.

[0022] In addition to the purposes, characteristics and advantages described above, the utility model has other purposes, characteristics and advantages. The utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide further understanding of the utility model, the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0024] Figure 1 is the axonometric view of the online detection device of the utility model;

[0025] Figure 2 is the axonometric view of the adsorption device and the first visual angle of the visual detection device;

[0026] Figure 3 is the axonometric view of the adsorption device and the second visual angle of the visual detection device;

[0027] Figure 4 is the local structure schematic view of the detection rack;

[0028] Among them, 1, detection rack, 2, workpiece, 3, adsorption device, 4, mechanical arm, 5, visual detection device;

[0029] 11, rack base, 12, positioning block, 13, sliding rail one, 14, clamping block, 15, connecting plate, 16, telescopic piece, 17, support assembly, 18, detection device;

[0030] 31, mounting base, 32, moving adsorption assembly, 33, slide rail two, 34, driving piece one, 35, fixed adsorption assembly, 36, mounting plate, 37, driving wheel, 38, driven wheel, 39, transmission belt, 310, fixed block, 311, adjusting block, 312, adjusting bolt;

[0031] 51, camera, 52, mounting base, 53, driving piece two, 54, connecting frame. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below, and the preferred embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0034] Embodiments:

[0035] Referring to Figures 1-4 The present embodiment provides an online detection device for welding workpieces, comprising:

[0036] A detection rack 1 is used for placing workpieces 2 to be detected;

[0037] A mechanical arm 4 is arranged on one side of the detection rack 1 in the length direction, and the movable end of the mechanical arm 4 is provided with an adsorption device 3, and the adsorption device 3 comprises at least two groups of moving adsorption assemblies 32 which can move along the length direction of the adsorption device 3.

[0038] A visual detection device 5 is arranged on the adsorption device 3, and the visual detection device 5 comprises a camera 51 which can rotate around the length direction of the adsorption device 3 (i.e. rotate around the length direction of the adsorption device as the rotation shaft).

[0039] The workpiece 2 to be detected is placed on the detection bench 1 from the previous station by the mechanical arm 4 and the adsorption device 3, the visual detection device 5 is used to detect the workpiece 2 on the detection bench 1, and the workpiece 2 is transferred to the next station by the mechanical arm and the adsorption device 3 after detection. Further, the camera 51 can rotate within a certain range along the length direction of the adsorption device 3, and the visual detection of the workpiece can be completed under the cooperation of the mechanical arm 4, and the interference between the camera 51 and the adsorption device 3 is prevented; the camera 51 is in the initial position when it does not perform visual detection, which can effectively prevent the camera from being bumped during the adsorption of the workpiece; and the camera 51 rotates to the detection position when it performs visual detection, and the visual detection of the workpiece below is completed under the cooperation of the mechanical arm 4.

[0040] As shown in Figure 2 and Figure 3 The adsorption device 3 includes a mounting base 31, a second sliding rail 33 and a driving assembly. The second sliding rail 33 is arranged on the mounting base 31 and has the same length direction as the mounting base 31. The moving adsorption assembly 32 is slidingly arranged on the second sliding rail 33 and is driven to move by the driving assembly. The sliding arrangement of the moving adsorption assembly 32 can facilitate the selection of the adsorption position on the workpiece 2 according to the structure of the workpiece 2, so as to avoid the uneven surface of the workpiece 2 and ensure the smooth adsorption of the workpiece 2.

[0041] Preferably, the number of the moving adsorption assemblies 32 is at least two, which can ensure the vacuum adsorption of multiple positions of the workpiece 2 and the smooth adsorption and movement of the workpiece 2. Further, each moving adsorption assembly 32 can be synchronously moved by the same driving assembly, or each moving adsorption assembly 32 can be respectively moved by the corresponding driving assembly.

[0042] Specifically, in the embodiment, each moving adsorption assembly 32 is synchronously moved by the same driving assembly. The arrangement spacing between the moving adsorption assemblies 32 should be set according to the uneven surface (such as the beam structure) on the workpiece 2, so as to ensure that each moving adsorption assembly can avoid the uneven surface. The driving assembly includes a driving member 34, a driving wheel 37, a driven wheel 38 and a transmission belt 39. The driving wheel 37 and the driven wheel 38 are arranged at two ends of the mounting base 31, respectively. The driving wheel 37 is connected with the output end of the driving member 34. The transmission belt 39 is sleeved on the driving wheel 37 and the driven wheel 38. The moving adsorption assembly 32 is fixedly connected with the transmission belt 39. The driving member 34 drives the driving wheel 37 to rotate, so as to drive the transmission belt 39 and the driven wheel 38 to move. Therefore, all the moving adsorption assemblies 32 on the transmission belt 39 are synchronously moved.

[0043] Further, the mounting base 31 is provided with a fixed block 310, an adjusting block 311 and an adjusting bolt 312. The adjusting block 311 is provided with a waist-shaped hole. The mounting base 31 is provided with a mounting hole. After the waist-shaped hole on the adjusting block 311 is aligned with the mounting hole, the adjusting block 311 is fixed on the mounting base 31 by using a bolt assembly. The fixed block 310 is fixed on the mounting base 31 and is provided with a threaded hole. After the adjusting bolt 312 is screwed into the threaded hole, the end of the adjusting bolt 312 abuts against the adjusting block 311. The driven wheel 38 is mounted on the adjusting block 311, and the driven wheel 38 can move together with the adjusting block 311. Specifically, after the bolt assembly between the adjusting block 311 and the mounting base 31 is loosened, the position of the adjusting block 311 can be adjusted by screwing the adjusting bolt 312, so that the position of the driven wheel 38 is adjusted, and the tension degree of the transmission belt 39 is adjusted.

[0044] Preferably, the adsorption device 3 further comprises a fixed adsorption assembly 35. The fixed adsorption assembly 35 is fixed at a middle position of the mounting base 31. The two sides of the fixed adsorption assembly 35 are symmetrically arranged with the movable adsorption assemblies 32. Further, the adsorption device 3 further comprises a mounting plate 36. The mounting plate 36 is arranged on the mounting base 31 and located at a middle position of the mounting base 31. The mounting plate 36 is used for connecting a movable end of the mechanical arm 4. When the adsorption device 3 adsorbs the workpiece 2, the flat surface of the workpiece 2 is found based on the position of the fixed adsorption assembly 35 to be adsorbed. The movable adsorption assemblies 32 on the two sides of the fixed adsorption assembly 35 avoid the uneven surface of the workpiece by moving.

[0045] Preferably, the adsorption device 3 further comprises an anti-collision block. The anti-collision block is mainly used for preventing the movable adsorption assemblies 32 from rigidly colliding with other components on the adsorption device 3. According to actual conditions, the anti-collision block can be arranged at positions where the movable adsorption assemblies 32 have a risk of collision, or can be arranged at positions where other components of the adsorption device have a risk of being collided.

[0046] Referring to Figure 2 , the visual detection device 5 comprises a camera 51, a mounting base 52, a driving member two 53 and a connecting frame 54. The driving member two 53 is arranged on the adsorption device 3 through the mounting base 52, that is, the driving member two 53 is arranged on the mounting base 31 through the mounting base 52. The connecting frame 54 is connected with an output shaft of the driving member two 53. The camera 51 is fixed on the connecting frame 54 and is driven by the driving member two 53 to rotate within a certain range.

[0047] Referring to Figure 4The inspection stand 1 is equipped with a stand base 11, a gripper assembly, and a support assembly 17. The support assembly 17 is disposed on the stand base 11 and the length directions of the two are parallel. The support assembly 17 is used to place the workpiece 2 to be inspected. The gripper assembly includes gripping blocks 14 and telescopic members 16. Gripping blocks 14 are provided on both sides of the support assembly 17, and the gripping blocks 14 are connected to the movable ends of the telescopic members 16. The gripping blocks 14 on both sides of the support assembly 17 move simultaneously to clamp or release the workpiece 2. Here, clamping means that the gripping blocks 14 on both sides of the support assembly 17 move closer to each other to clamp the workpiece 2, and releasing means that the gripping blocks 14 on both sides of the support assembly move further apart to release the workpiece 2. By moving the gripper assembly, the workpiece on the support assembly 17 can be adjusted to a centered position, which is convenient for subsequent visual inspection.

[0048] Preferably, the support assembly 17 includes at least two support rods, each of which is arranged in parallel on the platform base 11. The length direction of the support rods is parallel to the length direction of the platform base 11, and the upper surfaces of each support rod are flush, so as to provide a flat placement surface for the workpiece 2.

[0049] Furthermore, the gripper assembly has at least two gripping blocks 14 arranged on one side of the support assembly 17. Each gripping block 14 on the same side of the support assembly 17 is mounted on the connecting plate 15, and the connecting plate 15 is connected to the movable end of the telescopic member 16.

[0050] Preferably, the platform base 11 is provided with a slide rail 13, and the connecting plate 15 is slidably disposed on the slide rail 13, so as to ensure the smoothness of the sliding of the connecting plate 15.

[0051] Preferably, the telescopic component 16 is a double-headed cylinder, which can synchronously drive the clamping blocks 14 on both sides of the support assembly 17 to move, ensuring the consistency of the movement of the clamping blocks 14 on both sides; by arranging multiple clamping blocks 14 on one side of the support assembly 17 ( Figure 4 The diagram illustrates three clamping blocks arranged on one side of the support assembly, which increases the clamping points for workpiece 2 and ensures that workpiece 2 is centered after the gripper assembly is adjusted. It should be noted that in some embodiments, the clamping blocks on both sides of the support assembly may be driven by corresponding telescopic components, thus enabling clamping and releasing actions on both sides.

[0052] Preferably, depending on the length of the inspection table 1, multiple sets of gripper assemblies can be set on the inspection table 1. The workpiece 2 can be adjusted to the middle position of the inspection table 1 through the cooperation of multiple gripper assemblies, which facilitates subsequent visual inspection.

[0053] See Figure 4The end of the rack base 11 in the length direction is provided with a positioning block 12 and a detection device 18, the positioning block 12 is used for facilitating positioning when the workpiece 2 is placed on the detection rack 1 by the adsorption assembly, and the detection device 18 transmits a signal to the upper control center when the workpiece 2 is detected, so as to carry out subsequent action process. Preferably, the detection device 18 can be a proximity sensor and the like, and the type of detection device can be selected and adjusted by the person skilled in the art according to the actual situation.

[0054] Preferably, the movable adsorption assembly 32 and the fixed adsorption assembly 35 generally comprise a mounting frame and a vacuum chuck, the mounting frame serves as a carrier for mounting the vacuum chuck; according to whether the adsorption assembly is movable or fixed, the mounting frame is fixedly connected with the mounting base 31, or the mounting frame is slidingly connected with the slide rail two 33; the vacuum chuck is connected with a vacuum generator through a pipeline, and the workpiece is adsorbed by vacuumizing after the vacuum chuck contacts the surface of the workpiece.

[0055] Preferably, the driving member one 34 and the driving member two 53 are motors or hydraulic motors, and the camera 51 in the embodiment is a line scanning camera; further, the mechanical arm 4 please refer to the prior art, and the embodiment will not be described in detail.

[0056] Preferably, the workpiece 2 in the embodiment is a grain box plate of a dryer, and of course the online detection device in the embodiment can also be applied to detection of other welding workpieces.

[0057] The working process of the online detection device in the embodiment is as follows:

[0058] The mechanical arm 4 and the adsorption device 3 cooperate to adsorb and place the workpiece in the previous work station (at this time the workpiece has been completed welding) on the detection rack 1, and the workpiece is placed against the positioning block 12 when the workpiece 2 is placed, the detection device 18 detects that the workpiece has been placed in position after the workpiece 2 is placed, the adsorption device 3 stops adsorbing the workpiece, and the mechanical arm 4 takes away the adsorption device 3 from the workpiece 2;

[0059] The telescopic member 16 controls the clamping blocks 14 on both sides of the supporting assembly 17 to perform clamping action, so that the workpiece 2 is centrally positioned on the detection rack 1; after the clamping blocks 14 are clamped, the clamping blocks 14 are still in the clamping state according to the situation, or the clamping blocks are reset to release the workpiece 2;

[0060] The camera 51 rotates and cooperates with the mechanical arm 4 to complete photographing and scanning of the workpiece 2, and uploads the data of photographing and scanning to the control system; the control system identifies whether the position accuracy of each sub-piece of the workpiece is qualified, and simultaneously detects the appearance of each welding seam (including welding quality detection such as blowhole, welding tumor and burn-through); wherein, the specific algorithm of the control system for visual identification of the workpiece, please refer to the prior art;

[0061] The mechanical arm 4 and the adsorption device 3 cooperate to transfer the workpiece from the detection bench 1 according to the detection result; in the embodiment, the workpiece is transferred to a qualified stacking area if the detection result is qualified, and the workpiece is transferred to an unqualified stacking area if the detection result is unqualified; meanwhile, if the clamping block is in the state of clamping the workpiece during the detection process, the retractable part 16 should be controlled to act to loosen the workpiece, and then the mechanical arm and the adsorption device transfer the workpiece.

[0062] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An online inspection device for welded workpieces, characterized in that, include: Inspection stand (1), the inspection stand (1) is used to place the workpiece (2) to be inspected; A robotic arm (4) is provided on one side of the detection platform (1). The movable end of the robotic arm (4) is provided with an adsorption device (3). The adsorption device (3) includes at least two sets of movable adsorption components (32) that can move along the length direction of the adsorption device (3). A visual inspection device (5) is disposed on the adsorption device (3). The visual inspection device (5) includes a camera (51) which can rotate around the length of the adsorption device (3).

2. The online inspection device for welded workpieces according to claim 1, characterized in that, The testing stand (1) is provided with a stand base (11), a gripper assembly and a support assembly (17); the support assembly (17) is set on the stand base (11) and the length directions of the two are parallel, the support assembly (17) is used to place the workpiece (2) to be tested; the gripper assembly includes a clamping block (14) and a telescopic member (16), the support assembly (17) is provided with clamping blocks (14) on both sides, and the clamping blocks (14) are connected to the movable end of the telescopic member (16), the clamping blocks (14) on both sides of the support assembly (17) move simultaneously to clamp or release the workpiece (2).

3. The online inspection device for welded workpieces according to claim 2, characterized in that, The gripper assembly has at least two gripping blocks (14) arranged on one side of the support assembly (17). Each gripping block (14) on the same side of the support assembly (17) is mounted on the connecting plate (15), which is connected to the movable end of the telescopic member (16).

4. The online inspection device for welded workpieces according to claim 3, characterized in that, The platform base (11) is provided with a slide rail (13), and the connecting plate (15) is slidably disposed on the slide rail (13).

5. The online inspection device for welded workpieces according to claim 2, characterized in that, The test bench base (11) is provided with a positioning block (12) and a detection device (18) at one end in the length direction.

6. The online inspection device for welded workpieces according to claim 1, characterized in that, The adsorption device (3) includes a mounting base (31), a slide rail (33), and a driving component. The movable adsorption component (32) is slidably disposed on the slide rail (33) and is driven to move by the driving component.

7. The online inspection device for welded workpieces according to claim 6, characterized in that, The drive assembly includes a drive component (34), a drive wheel (37), a driven wheel (38), and a transmission belt (39). The drive wheel (37) and the driven wheel (38) are respectively disposed at both ends of the mounting base (31). The drive wheel (37) is connected to the output end of the drive component (34). The transmission belt (39) is sleeved on the drive wheel (37) and the driven wheel (38). The movable adsorption assembly (32) is fixedly connected to the transmission belt (39).

8. The online inspection device for welded workpieces according to claim 7, characterized in that, The mounting base (31) is provided with a fixing block (310), an adjusting block (311) and an adjusting bolt (312). The adjusting block (311) is provided with a waist-shaped hole. The mounting base (31) is provided with a mounting hole. After the waist-shaped hole on the adjusting block (311) is aligned with the mounting hole, the adjusting block (311) is fixedly set on the mounting base (31) using a bolt assembly. The fixing block (310) is fixedly set on the mounting base (31) and is provided with a threaded hole. After the adjusting bolt (312) is screwed into the threaded hole, its end abuts against the adjusting block (311). The driven wheel (38) is installed on the adjusting block (311).

9. The online inspection device for welded workpieces according to claim 6, characterized in that, The adsorption device (3) further includes a fixed adsorption component (35), which is fixedly disposed in the middle of the mounting base (31), and movable adsorption components (32) are symmetrically arranged on both sides of the fixed adsorption component (35).

10. The online inspection device for welded workpieces according to claim 1, characterized in that, The visual inspection device (5) includes a camera (51), a mounting base (52), a second drive component (53), and a connecting frame (54). The second drive component (53) is mounted on the adsorption device (3) via the mounting base (52). The connecting frame (54) is connected to the output shaft of the second drive component (53). The camera (51) is fixedly mounted on the connecting frame (54).

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