A device for detecting the flatness of the front and back surfaces of a workpiece.

Abstract

A workpiece front and back surface auxiliary material and flatness inspection device includes a conveying device and a transfer device, and further includes: a fixture device, which is disposed beside the conveying device, including a positioning fixture and a first linear module that drives the positioning fixture to reciprocate; the positioning fixture includes a fixture plate and a plurality of positioning components disposed on the fixture plate and defining a clamping area, and a window is also provided on the fixture plate in the clamping area for exposing the lower surface of the workpiece to be inspected; and an inspection device, which is disposed on the moving path of the positioning fixture, and includes an upper vision camera assembly and a lower vision camera assembly symmetrically arranged in the vertical direction. This technical solution can greatly improve the efficiency of inspecting double-sided workpieces, while also reducing the degree of manual intervention and lowering the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the flatness of the front and back surfaces of a workpiece. Background Technology

[0002] Visual inspection refers to taking pictures of the workpiece to be inspected using a visual camera to obtain image signals, which are then transmitted to a processing system. The processing system converts the image signals into digital signals based on pixel distribution, brightness, color, and other information. The image system performs various operations on these signals to extract the features of the target, and then controls the operation of the equipment on site based on the judgment results.

[0003] In existing technologies, during visual inspection of workpieces, the workpiece to be inspected is usually fixed in a fixture, allowing the vision camera to inspect it. During inspection, only one surface of the workpiece can be inspected. If two surfaces need to be inspected, the workpiece must be removed from the fixture and flipped before the other surface can be inspected. This requires manual removal and reloading of the workpiece from the fixture, which greatly increases the labor intensity and results in low inspection efficiency.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a workpiece front and back auxiliary material and flatness detection device to overcome the defects mentioned in the background art.

[0006] A workpiece front and back surface auxiliary material and flatness inspection device includes a conveying device mounted on a machine base for conveying the workpiece to be inspected along a predetermined direction, a transfer device for transferring the workpiece to be inspected, and further includes:

[0007] The fixture device is located beside the conveying device and includes a positioning fixture and a first linear module that drives the positioning fixture to reciprocate. The positioning fixture includes a fixture plate and a plurality of positioning elements disposed on the fixture plate and defining a clamping area. A window is also provided on the fixture plate in the clamping area for the lower surface of the workpiece to be inspected to be exposed.

[0008] The detection device is arranged on the moving path of the positioning fixture, and includes an upper vision camera assembly and a lower vision camera assembly symmetrically arranged in the vertical direction, with the upper vision camera and the lower vision camera respectively located on the upper and lower sides of the positioning fixture.

[0009] Furthermore, the fixture plate includes a mounting part and an assembly part. The mounting part is connected to the first linear module, the assembly part extends toward the detection device and corresponds to the upper vision camera assembly and the lower vision camera assembly, and the clamping area is disposed in the assembly part.

[0010] Furthermore, all of the positioning components include a support rod, one end of which is connected to the fixture plate, and the other end extends toward the center of the window to support the workpiece to be inspected. A limiting portion protruding above the upper end face of the support rod is formed on the support rod located on two adjacent edges of the window. The limiting portion facing the side of the window is used to abut against the side wall of the workpiece to be inspected, thereby limiting the workpiece to be inspected.

[0011] Furthermore, pushers are provided at the remaining two adjacent edges of the window. The pushers are used to push the workpiece to be inspected toward the limiting part and clamp and position the workpiece to be inspected. The pushers include a clamping cylinder fixedly mounted on the fixture plate and a pusher block pulsatingly connected to the clamping cylinder. The pusher block is driven by the clamping cylinder to reciprocate toward the corresponding edge of the window.

[0012] Furthermore, both the upper vision camera assembly and the lower vision camera assembly include:

[0013] Mounting rack;

[0014] A connecting plate, which is movably connected to the mounting bracket in the vertical direction;

[0015] A driving device is mounted on the mounting frame and is connected to the connecting plate in a transmission manner, driving the connecting plate to reciprocate in the up-down direction.

[0016] A camera unit, which is fixedly mounted on the connecting plate.

[0017] Furthermore, the driving device includes a lead screw rotatably connected to the mounting bracket, and one end of the lead screw is provided with a turntable that drives the lead screw to rotate. The lead screw is threadedly connected to the connecting plate.

[0018] Furthermore, the conveying device includes a loading section and a unloading section located on both sides of the detection device, and both the loading section and the unloading section include:

[0019] Belt conveyors are used to move the workpieces to be inspected along a predetermined direction.

[0020] A width adjustment component is disposed on the frame of the belt conveyor, and a conveying channel for the workpiece to be inspected to flow through is provided on the conveying surface of the belt conveyor, and the width adjustment component is used to adjust the width of the conveying channel.

[0021] Furthermore, the width adjustment component includes:

[0022] A baffle plate extends along the length of the belt conveyor and is fixedly mounted on one side frame of the belt conveyor.

[0023] An adjusting plate is disposed opposite to the baffle and defines the conveying channel between the adjusting plate and the baffle.

[0024] The swing arm comprises two arms, one end of which is rotatably connected to another frame of the belt conveyor, and the other end extends toward the baffle and is rotatably connected to the adjusting plate.

[0025] Furthermore, the two ends of the first linear module extend to positions corresponding to the loading section and the unloading section;

[0026] The transfer device includes two units respectively corresponding to the loading section and the unloading section, and each of the two transfer devices includes:

[0027] The second linear module is suspended on the machine base, with its two ends corresponding to the conveying device and the first linear module, respectively.

[0028] The material handling assembly is disposed on the second linear module and reciprocates along a straight line with the second linear module. The material handling assembly includes a base plate mounted on the second linear module, a vertical plate movably connected to the base plate in the vertical direction, and a drive motor fixedly mounted on the base plate and drivenly connected to the vertical plate. Several suction nozzles for suctioning and replacing workpieces are also fixedly mounted on the vertical plate.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] This embodiment provides a workpiece front and back surface auxiliary material and flatness inspection device. During the workpiece inspection process, the transfer device picks up the workpiece to be inspected after it is transported by the conveying device and places it on the fixture device. At this time, the positioning components surrounding the positioning area clamp and fix the workpiece to be inspected, so that the upper surface of the workpiece is exposed upwards, and the lower surface of the workpiece to be inspected is exposed downwards along the window. The first linear module drives the positioning fixture to move towards the inspection device, so that the positioning fixture is between the upper vision camera component and the lower vision camera component, thereby enabling simultaneous inspection of the upper and lower surfaces of the workpiece to be inspected. In this embodiment, the main contents to be inspected are the state of the mounting auxiliary material and the flatness of the surface. After the two camera components transmit the image information they have collected to the main control system, the main control system performs comparative analysis to determine whether the inspected workpiece meets the standards. This technical solution can greatly improve the efficiency of inspecting double-sided workpieces, and at the same time, reduce the degree of manual intervention and reduce the labor intensity of workers.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the fixture device in this utility model.

[0034] Figure 3 This is a schematic diagram of the fixture device after removing the first linear module in this utility model.

[0035] Figure 4 This is a schematic diagram of the feeding section of the conveying device in this utility model.

[0036] Figure 5 This is a schematic diagram of the transfer device in this utility model.

[0037] Figure 6 This is a schematic diagram of the detection device in this utility model.

[0038] Figure 7 This is a schematic diagram of the upper vision camera component in this utility model. Detailed Implementation

[0039] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in this utility model embodiment 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.

[0041] Furthermore, the use of terms such as "first" and "second" in the embodiments of this utility model is 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.

[0042] In this embodiment of the invention, a detection device is provided that can simultaneously detect both the front and back sides of a workpiece, thereby greatly improving the efficiency of detecting double-sided workpieces. Simultaneously, it reduces the degree of manual intervention and lowers the labor intensity of manual workers. Figure 1-7 As shown, this technical solution provides a workpiece front and back auxiliary material and flatness detection device, including a conveying device 200 mounted on a machine base 100 for conveying the workpiece to be detected along a predetermined direction, a transfer device 300 for transferring the workpiece to be detected, a fixture device 400, and a detection device 500. The fixture device 400 is located beside the conveying device 200 and includes a positioning fixture 410 and a first linear module 420 that drives the positioning fixture 410 to reciprocate. 410 includes a fixture plate 411 and a plurality of positioning members 412 disposed on the fixture plate 411 and defining a clamping area 413. The fixture plate 411 is also provided with a window 414 on the clamping area 413 for exposing the lower surface of the workpiece to be inspected. The inspection device 500 is disposed on the moving path of the positioning fixture 410 and includes an upper vision camera assembly 510 and a lower vision camera assembly 520 symmetrically arranged in the vertical direction. The upper vision camera and the lower vision camera are respectively located on the upper and lower sides of the positioning fixture 410.

[0043] In other words, during the workpiece inspection process, the transfer device 300 picks up the workpiece to be inspected, which is conveyed by the conveying device 200, and places it on the fixture device 400. At this time, the positioning member 412 surrounding the positioning area clamps and fixes the workpiece to be inspected, so that the upper surface of the workpiece is exposed upwards, and the lower surface of the workpiece to be inspected is exposed downwards along the window 414. The first linear module 420 drives the positioning fixture 410 to move towards the inspection device 500, and makes the positioning fixture 410 between the upper vision camera assembly 510 and the lower vision camera assembly 520, so that the upper and lower surfaces of the workpiece to be inspected can be inspected simultaneously. In this embodiment, the main contents to be inspected are the state of the mounting auxiliary material and the flatness of the surface. After the two camera assemblies transmit the image information they have collected to the main control system, the main control system performs comparative analysis to determine whether the inspected workpiece meets the standard.

[0044] In this embodiment, in order to facilitate the installation of the fixture plate 411 and to facilitate the two camera components to detect the workpiece to be tested on the positioning fixture 410 respectively, the fixture plate 411 includes a mounting part 4111 and an assembly part 4112. The mounting part 4111 is connected to the first linear module 420, and the assembly part 4112 extends toward the detection device 500 and corresponds to the upper vision camera component 510 and the lower vision camera component 520. The clamping area 413 is provided in the assembly part 4112.

[0045] In this embodiment, the assembly part 4112 extends to the side, thereby avoiding interference from the first linear module 420 and ensuring that the upper vision camera assembly 510 and the lower vision camera assembly 520 are not interfered with during the acquisition of surface image signals of the workpiece to be inspected, thus ensuring the reliability of visual inspection.

[0046] In this embodiment, to facilitate the support and fixation of the workpiece to be inspected, such as... Figure 2-3 As shown, all positioning components 412 include a support rod 4121. One end of the support rod 4121 is connected to the fixture plate 411, and the other end extends toward the center of the window 414 to support the workpiece to be inspected. On the support rods 4121 located on two adjacent edges of the window 414, a limiting part 4122 protruding above the upper end face of the support rod 4121 is formed. The limiting part 4122 facing the side of the window 414 is used to abut against the side wall of the workpiece to be inspected, thereby limiting the workpiece to be inspected.

[0047] When the workpiece to be inspected is placed on the positioning fixture 410 for fixing, the edge of the workpiece to be inspected is supported by the support rod 4121. At the same time, the workpiece to be inspected is pushed toward the limiting part 4122, and then the limiting part 4122 located at the two adjacent edges of the window 414 is used to limit and fix it, so that the inspection work can be carried out stably.

[0048] In this embodiment, to more quickly push the workpiece to be inspected toward the limiting part 4122 and achieve clamping and positioning, pushing members are provided at the remaining two adjacent edges of the window 414. These pushing members push the workpiece to be inspected toward the limiting part 4122 and clamp and position it. Each pushing member includes a clamping cylinder 4124 fixedly mounted on the fixture plate 411 and a pushing block 4125 pulsatingly connected to the clamping cylinder 4124. The pushing block 4125 is driven by the clamping cylinder 4124 to reciprocate toward the corresponding edge of the window 414. The two pushing members push sequentially, thereby fixing the workpiece to be inspected toward the limiting parts 4122 located on both sides, thus achieving the clamping and positioning of the workpiece.

[0049] like Figure 6-7 As shown, the upper vision camera assembly 510 is positioned above the machine base 100, and the lower vision camera assembly 520 is recessed below the machine base 100. The first linear module 420 can pass between the two camera assemblies during the movement of the driving positioning fixture 410, thereby completing the detection of the upper and lower surfaces of the workpiece. In this technical solution, both the upper vision camera assembly 510 and the lower vision camera assembly 520 include a mounting frame 511, a connecting plate 512, a driving device 513, and a camera unit 514. The mounting frame 511 provides support, and the connecting plate 512 is movably connected to the mounting frame 511 in the vertical direction. The driving device 513 is mounted on the mounting frame 511 and is connected to the connecting plate 512, driving the connecting plate 512 to reciprocate in the vertical direction. The camera unit 514 is fixedly mounted on the connecting plate 512. By driving the connecting plate 512 through the driving device 513, the camera unit 514 can be moved in the vertical direction, thereby adjusting the distance between the camera assembly and the workpiece to be detected, ensuring accurate detection.

[0050] In this embodiment, the driving device 513 includes a lead screw 5131 rotatably connected to the mounting bracket 511, and a turntable 5132 is provided at one end of the lead screw 5131 to drive the lead screw 5131 to rotate. The lead screw 5131 is threadedly connected to the connecting plate 512. That is, the turntable 5132 drives the lead screw 5131 to rotate, thereby enabling the connecting plate 512 to move up and down along its axial direction as the lead screw 5131 rotates. It is understood that a sliding pair is provided between the connecting plate 512 and the mounting bracket 511 to ensure the stability of the camera unit 514 during movement.

[0051] In this embodiment, in order to enable the loading and unloading actions to be completed separately and without interference during the conveying of workpieces, the conveying device 200 includes a loading section 210 and an unloading section 220 located on both sides of the detection device 500. Both the loading section 210 and the unloading section 220 include a belt conveyor 211 and a width adjustment component 212. The belt conveyor 211 is used to drive the workpiece to be detected to be conveyed along a predetermined direction. The width adjustment component 212 is used to limit the path of the workpiece to be detected on the conveyor belt and to adjust the width of the path of the workpiece to be detected to adapt to the workpiece. The width adjustment component 212 is set on the frame of the belt conveyor 211, and a conveying channel 2121 for the workpiece to be detected to flow through is provided on the conveying surface of the belt conveyor 211. The width adjustment component 212 is used to adjust the width of the conveying channel 2121.

[0052] In other words, the workpiece to be inspected moves along the conveying channel 2121 defined by the width adjustment component 212, and the restriction of the conveying channel 2121 allows it to move in a predetermined direction, thereby facilitating the gripping action of the transfer device 300. Specifically, in this embodiment, the width adjustment component 212 includes a baffle 2122, an adjustment plate 2123, and a swing arm 2124. The baffle 2122 extends along the length of the belt conveyor 211 and is fixedly mounted on one side of the frame of the belt conveyor 211. The adjustment plate 2123 is arranged opposite to the baffle 2122 and defines the conveying channel 2121 between the baffle 2122 and the adjustment plate 2123. There are two swing arms 2124, one end of which is rotatably connected to another frame of the belt conveyor 211, and the other end extends toward the baffle 2122 and is rotatably connected to the adjustment plate 2123.

[0053] The width of the conveyor channel 2121 is adjusted to accommodate workpieces of different sizes, ensuring precise movement direction and path. By loosening the fasteners between the swing arm 2124 and the frame, the swing arm 2124 can rotate along the fasteners. Similarly, loosening the fasteners between the swing arm 2124 and the adjusting plate 2123 allows both the adjusting plate 2123 and the swing arm 2124 to rotate. In this embodiment, the two swing arms 2124 are placed parallel to each other and have the same length, forming a parallelogram structure with the swing arm 2124, frame, and adjusting plate 2123. Loosening the fasteners at both ends of the swing arm 2124 allows the parallelogram to move, adjusting the distance between the adjusting plate 2123 and the baffle 2122, thereby adjusting the conveyor channel 2121. It should be noted that in the appendix... Figure 4 In this process, due to assembly issues, the two swing arms 2124 are not in a parallel state. The actual situation in this technical solution is not as shown in the attached figure. Assembly issues should be understood.

[0054] In this embodiment, the two ends of the first linear module 420 extend to positions corresponding to the loading section 210 and the unloading section 220. The transfer device 300 includes two devices corresponding to the loading section 210 and the unloading section 220 respectively. One transfer device 300 is used to pick up the workpiece to be inspected conveyed by the loading section 210 and transfer it to the positioning fixture 410 to complete the loading action of the workpiece to be inspected. The transfer device 300 corresponding to the unloading section 220 is used to pick up the workpiece that has been inspected on the positioning fixture 410 and transfer it to the unloading section 220 to complete the unloading action of the workpiece. In this embodiment, both transfer devices 300 include a second linear module 301 and a material handling component 310. The second linear module 301 is suspended above the machine base 100, with its two ends corresponding to the conveying device 200 and the first linear module 420, respectively. The material handling component 310 is disposed above the second linear module 301 and moves back and forth along a straight line with the second linear module 301. The material handling component 310 includes a base plate 311 mounted on the second linear module 301, a vertical plate movably connected to the base plate 311 in the vertical direction, and a drive motor fixedly mounted on the base plate 311 and connected to the vertical plate for transmission. Several suction nozzles 313 for suctioning and replacing the workpieces to be inspected are also fixedly mounted on the vertical plate. It is understandable that the drive motor drives the vertical plate to move in the up and down direction, thereby completing the material picking and unloading actions. A transmission structure is set between the drive motor and the vertical plate. The transmission structure includes a synchronous pulley mounted on the output shaft of the drive motor and a synchronous pulley rotatably connected to the base plate 311. A synchronous belt is fitted on the two synchronous pulleys, and one side of the synchronous belt is fixedly connected to the vertical plate. Thus, when the drive motor drives the synchronous belt, it can drive the vertical plate to move in the up and down direction to complete the material picking and unloading actions.

[0055] For those skilled in the art, various other corresponding changes and modifications can be obtained based on the structure and principles disclosed in this utility model, and all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A workpiece front and back surface auxiliary material and flatness inspection device, comprising a conveying device mounted on a machine base for conveying the workpiece to be inspected along a predetermined direction, and a transfer device for transferring the workpiece to be inspected, characterized in that, It also includes: The fixture device is located beside the conveying device and includes a positioning fixture and a first linear module that drives the positioning fixture to reciprocate. The positioning fixture includes a fixture plate and a plurality of positioning elements disposed on the fixture plate and defining a clamping area. A window is also provided on the fixture plate in the clamping area for the lower surface of the workpiece to be inspected to be exposed. The detection device is arranged on the moving path of the positioning fixture, and includes an upper vision camera assembly and a lower vision camera assembly symmetrically arranged in the vertical direction, with the upper vision camera and the lower vision camera respectively located on the upper and lower sides of the positioning fixture.

2. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 1, characterized in that, The fixture plate includes a mounting part and an assembly part. The mounting part is connected to the first linear module, and the assembly part extends toward the detection device and corresponds to the upper vision camera assembly and the lower vision camera assembly. The clamping area is disposed in the assembly part.

3. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 1, characterized in that, All of the positioning components include a support rod, one end of which is connected to the fixture plate and the other end extends toward the center of the window to support the workpiece to be inspected. A limiting portion protruding above the upper end face of the support rod is formed on the support rod located on two adjacent edges of the window. The limiting portion facing the side of the window is used to abut against the side wall of the workpiece to be inspected, thereby limiting the workpiece to be inspected.

4. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 3, characterized in that, Pushing members are provided at the two remaining adjacent edges of the window. The pushing members are used to push the workpiece to be inspected toward the limiting part and clamp and position the workpiece to be inspected. The pushing members include a clamping cylinder fixedly mounted on the fixture plate and a pushing block pulsatingly connected to the clamping cylinder. The pushing block is driven by the clamping cylinder to reciprocate toward the corresponding edge of the window.

5. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 1, characterized in that, Both the upper vision camera assembly and the lower vision camera assembly include: Mounting rack; A connecting plate, which is movably connected to the mounting bracket in the vertical direction; A driving device is mounted on the mounting frame and is connected to the connecting plate in a transmission manner, driving the connecting plate to reciprocate in the up-down direction. A camera unit, which is fixedly mounted on the connecting plate.

6. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 5, characterized in that, The driving device includes a lead screw rotatably connected to the mounting bracket, and one end of the lead screw is provided with a turntable that drives the lead screw to rotate. The lead screw is threadedly connected to the connecting plate.

7. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 1, characterized in that, The conveying device includes a loading section and a unloading section located on both sides of the detection device, and both the loading section and the unloading section include: Belt conveyors are used to move the workpieces to be inspected along a predetermined direction. A width adjustment component is disposed on the frame of the belt conveyor, and a conveying channel for the workpiece to be inspected to flow through is provided on the conveying surface of the belt conveyor, and the width adjustment component is used to adjust the width of the conveying channel.

8. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 7, characterized in that, The width adjustment component includes: A baffle plate extends along the length of the belt conveyor and is fixedly mounted on one side frame of the belt conveyor. An adjusting plate is disposed opposite to the baffle and defines the conveying channel between the adjusting plate and the baffle. The swing arm comprises two arms, one end of which is rotatably connected to another frame of the belt conveyor, and the other end extends toward the baffle and is rotatably connected to the adjusting plate.

9. The workpiece front and back auxiliary materials and flatness detection equipment according to claim 8, characterized in that, The two ends of the first linear module extend to positions corresponding to the loading and unloading sections; The transfer device includes two units respectively corresponding to the loading section and the unloading section, and each of the two transfer devices includes: The second linear module is suspended on the machine base, with its two ends corresponding to the conveying device and the first linear module, respectively. The material handling assembly is disposed on the second linear module and reciprocates along a straight line with the second linear module. The material handling assembly includes a base plate mounted on the second linear module, a vertical plate movably connected to the base plate in the vertical direction, and a drive motor fixedly mounted on the base plate and drivenly connected to the vertical plate. Several suction nozzles for suctioning and replacing workpieces are also fixedly mounted on the vertical plate.

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