Disc type thread visual inspection equipment

Abstract

The utility model discloses disc type thread visual inspection equipment which comprises a rotary disc, a plurality of pressing mechanisms and material grooves are arranged on the disc at equal angles, the pressing mechanisms and the material grooves are used for fixing parts to be detected, the parts are provided with threaded holes needing to be detected, a camera assembly is arranged on the side edge of the disc, and the camera assembly is connected with the rotary disc. The camera assemblies are used for shooting and detecting threaded holes in a part, each threaded hole of the part is correspondingly provided with two camera assemblies, each camera assembly comprises a camera and a light source which are located on the upper side and the lower side of the disc respectively, and through the arrangement, on one hand, the detection precision is guaranteed, and on the other hand, the space utilization efficiency is effectively improved; the compressed workpiece is loosened through pulling of the air cylinder, meanwhile, the whole compressing mechanism retreats through continuous pulling, feeding and discharging can be conveniently achieved through the mechanical arm, effective automatic connection is achieved in cooperation with other automatic feeding and discharging equipment, the automation degree of detection is improved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of visual detection, in particular to a disc-type thread visual detection device. Background Art

[0002] A visual inspection system uses industrial cameras to replace the human eye to perform functions such as identification, measurement, and positioning. Typically, a visual inspection system consists of a camera, lens, and light source. It can replace manual inspections for barcode characters, cracks, packaging, surface coating integrity, and dents. Using a visual inspection system can effectively improve the speed and accuracy of inspections on production lines, significantly increasing production and quality, reducing labor costs, and preventing misjudgments caused by eye fatigue.

[0003] Generally, visual inspection mostly uses synchronous belts to move parts to the corresponding positions of each camera for inspection. Specifically in the field of thread inspection, when there are multiple threaded holes that need to be inspected on a part, the inspection equipment will be elongated, occupying a larger factory space when in use. At the same time, the longer stroke also makes the position accuracy of each movement worse, resulting in a small deviation between the stop position of the part and the position of the camera paper, and this small deviation will also affect the inspection accuracy. At the same time, in conjunction with automated equipment, a more stable and convenient clamping structure is needed to clamp and fix the parts, as well as to discharge the materials at the front end and unload the materials at the back end during inspection. Utility Model Content

[0004] (1) Technical solution

[0005] In order to solve the above technical problems, the utility model provides a disc-type thread visual inspection device.

[0006] The specific technical solutions are:

[0007] A disc-type thread visual inspection device includes a rotating disc, on which are provided several clamping mechanisms and material troughs at equal angles. The clamping mechanisms and material troughs are used to fix parts to be inspected, and the parts have threaded holes that need to be inspected. A camera assembly is provided on the side of the disc to photograph the threaded holes on the inspected parts. Two groups of the camera assemblies are correspondingly configured for each threaded hole on the part. The camera assemblies include cameras and light sources, which are respectively located on the upper and lower sides of the disc. One group of cameras of the camera assembly is located above the disc, and the other group of cameras of the camera assembly is located below the disc.

[0008] Furthermore, the disc is also provided with a cylinder for cooperating with the clamping mechanism to clamp and loosen parts.

[0009] Furthermore, the clamping structure includes a mounting seat, a pressing block and a movable block. The middle part of the pressing block is fixed to one end of the mounting seat and the pressing block can rotate around the connection point. A sliding groove is provided on the upper part of the mounting seat. The movable block is provided in the sliding groove and can slide in the sliding groove. One end of the pressing block cooperates with one end of the movable block. One end of the movable block is an inclined slope. When the pressing block and the movable block move toward each other, the other end of the pressing block is pushed downward to press the parts.

[0010] Furthermore, a bearing is provided at one end of the pressing block that cooperates with the movable block, and a bearing is also provided at one end of the movable block that cooperates with the cylinder.

[0011] Furthermore, a torsion spring is provided at the connection between the pressing block and the mounting seat, so that one end of the pressing block pressing part automatically tilts upward when the movable block retreats.

[0012] Furthermore, a first return spring is provided on the mounting seat, and two ends of the first return spring are respectively connected to the mounting seat and the movable block, so that the front end of the pressing block always presses the part.

[0013] Furthermore, a guide rail and a slider are provided at the lower part of the mounting seat, a limit block is provided on the mounting seat to limit the extreme stroke of the movable block, and a second return spring is provided on the side of the mounting seat, and the two ends of the second return spring are respectively fixed on the side of the mounting seat and the disc. When the cylinder is not working, under the action of the second return spring, the pressure block cooperates with the material trough to press the parts.

[0014] (2) Beneficial effects

[0015] Compared with the prior art, the technical solution proposed by the present invention has the following advantages:

[0016] (1) By setting up a disc-shaped detection structure and setting up multiple clamping mechanisms on the disc, each clamping mechanism forms a workstation, and then the camera assembly is set around the disc. Two detection stations are set corresponding to each threaded hole of the part. The camera takes pictures from top to bottom and from bottom to top respectively. On the one hand, it ensures the detection accuracy, and on the other hand, it effectively improves the space utilization efficiency;

[0017] (2) The cylinder is first pulled to loosen the clamped workpiece, and at the same time, the entire clamping mechanism is retracted by continuing to pull, which can facilitate the loading and unloading of the robotic arm and cooperate with other automated loading and unloading equipment to achieve effective automatic connection, improve the degree of automation of detection, and improve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 Schematic diagram of camera installation structure;

[0021] Figure 3 It is a schematic diagram of the cooperation between the pressing mechanism and the material trough;

[0022] Figure 4 It is a schematic diagram of the structure of the clamping mechanism. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the utility model, in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the utility model, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making any creative efforts are within the scope of protection of the utility model.

[0024] In the relevant existing technology, when there are multiple threaded holes that need to be inspected on a part, the inspection equipment will be elongated, occupying a larger factory space when in use. At the same time, the longer stroke will also make the position accuracy of each movement worse, resulting in a small deviation between the stop position of the part and the position of the photo paper, and this small deviation will also affect the inspection accuracy. At the same time, in conjunction with automated equipment, a more stable and convenient clamping structure is needed to clamp and fix the parts, as well as to discharge the materials at the front end and unload the materials at the back end during inspection.

[0025] In order to solve the problems existing in the related prior art, the present invention proposes a disc-type thread visual inspection device. The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0026] See also Figures 1 to 4The present invention proposes a disc-type thread visual inspection device, comprising a rotating disc 1, a motor (not shown in the figure) for driving the disc to rotate at a certain angle is also provided at the lower part of the disc 1, and a plurality of clamping mechanisms 2 and material troughs 3 are provided at equal angles on the disc 1. The clamping mechanisms 2 and material troughs 3 are used to fix the parts to be inspected, and the parts have threaded holes that need to be inspected. A camera assembly is provided on the side of the disc 1 for photographing the threaded holes on the inspected parts. Two sets of camera assemblies are correspondingly configured for each threaded hole on the part. The camera assembly includes a camera 4 and a light source 5, which are respectively located on the upper and lower sides of the disc 1. The camera 4 of one set of camera assemblies is located above the disc 1, and the camera 4 of the other set of camera assemblies is located below the disc 1. The position corresponding to the material trough 3 on the disc 1 is hollowed out, so that the light source 5 on one side can focus on the parts. The parts are illuminated by fill light to facilitate the camera 4 on the other side to take pictures and detect. Specifically, when in use, a clamping mechanism 2 and a material trough 3 are set at equal angles on the disc 1. Each clamping mechanism 2 and material trough 3 corresponds to a workstation. The motor adopts a stepper motor, and the corresponding rotation angle is the angle between two adjacent workstations. Each threaded hole on the part corresponds to two workstations. Among the two workstations, the camera on one workstation shoots upward from the bottom of the part, and the camera on the other workstation shoots downward from the top of the part. The disc-type detection structure replaces the traditional synchronous belt structure. On the one hand, the rotation angle of the stepper motor is more precise, so that the camera's shooting and detection of the parts is more accurate. On the other hand, the disc-type structure can effectively reduce the equipment space occupancy than the synchronous belt-type workstation arrangement.

[0027] In order to cooperate with the loading and unloading of the automated robotic arm, the disc 1 is also provided with a cylinder 6 for cooperating with the clamping mechanism 2 to clamp and loosen parts. Specifically, two cylinders 6 can be set, one cylinder corresponding to the loading position, and the other cylinder corresponding to the unloading position, that is, the cylinder cooperates with the clamping mechanism 2 to clamp and loosen at the loading position, so that the robot can automatically load, and at the unloading position, the cylinder cooperates to loosen the clamping mechanism, so that the robot can automatically unload. In addition, a fixed disk concentric with the disc 1 is provided inside the disc, and the two cylinders 6 are fixed on the fixed disk, that is, the loading position and the unloading position are fixed. In this way, there is no need to set a corresponding cylinder for each clamping mechanism. On the one hand, it can effectively reduce the equipment cost, and at the same time reduce the equipment volume.

[0028] Specifically, the clamping structure 2 includes a mounting seat 2a, a pressing block 2b and a movable block 2c. The middle part of the pressing block 2b is fixed to one end of the mounting seat 2a and the pressing block 2b can rotate around the connection point. A slide groove is provided on the upper part of the mounting seat 2a. The movable block 2c is provided in the slide groove and can slide in the slide groove. One end of the pressing block 2b cooperates with one end of the movable block 2c. One end of the movable block 2c is an inclined slope. When the pressing block 2b and the movable block 2c move toward each other, the other end of the pressing block 2b is pushed downward to clamp the parts. The end close to the part is defined as the front end, and the end close to the cylinder 6 is defined as the rear end. When the pressing block 2b and the movable block 2c move toward each other, the slope of the movable block 2c will lift the rear end of the pressing block 2b, and the front end of the pressing block 2b will be pressed down, and the material trough 3 is combined to achieve the purpose of fixing the parts.

[0029] A bearing 2d is provided on one end of the pressure block 2b and the movable block 2c, and a bearing 2d is also provided on one end of the movable block 2c and the cylinder 6. By providing a bearing 2d at the connection between the pressure block 2b and the movable block 2c, and also providing a bearing 2d at the connection between the cylinder 6 and the movable block 2c, the friction at the corresponding connection position can be effectively reduced and the smoothness can be improved.

[0030] A torsion spring is provided at the connection between the pressing block 2b and the mounting seat 2a, so that one end of the pressing block 2b pressing the part will automatically rise when the movable block 2c retreats. The torsion spring ensures that the rear end of the pressing block 2b always has a downward force. When the movable block 2c is pulled back, the front end of the pressing block 2b is automatically lifted, and the first return spring 2e is provided on the mounting seat 2a. The two ends of the first return spring 2e are respectively connected to the mounting seat 2a and the movable block 2c, so that the front end of the pressing block 2b always presses the part. That is, when the cylinder 6 pulls the movable block 2c back, the front end of the pressing block 2b automatically lifts up and releases the part. When the cylinder 6 does not work, the first return spring 2e makes the front end slope of the movable block 2c always push up the rear end of the pressing block 2b. In this way, the front end of the movable block 2b always presses the part. To cooperate with it, it is only necessary to set the cylinder at the loading position and the unloading position to complete the pulling of the movable block 2c to release the pressing block 2b and realize loading and unloading. At other positions, the first return spring 2e is used to realize the pressing block 2b pressing the part.

[0031] A guide rail 7 and a slider 8 are provided at the lower part of the mounting seat 2a, a limit block 9 for limiting the extreme stroke of the movable block is provided on the mounting seat 2a, and a second return spring 10 is provided on the side of the mounting seat 2a. The two ends of the second return spring 10 are respectively fixed on the side of the mounting seat 2a and the disc 1. When there is no action of the cylinder 6, under the action of the second return spring 10, the pressing block 2b cooperates with the trough 3 to press the parts. Specifically, when loading, it is necessary to ensure that the force provided by the first return spring 2e is less than the force provided by the second return spring 10. The cylinder 6 first pulls the movable block 2c back. At this time, the front end of the pressing block 2b is tilted upward. When the movable block 2c contacts the limit block 9, continuing to pull the movable block 2c will drive the mounting seat 2a to slide on the track 7. Through this arrangement, the pressing block 2b is completely separated from the upper part of the material trough 3, which can facilitate the manipulator to load and unload materials in the vertical direction. Taking the above feeding as an example, when the loading is completed, the cylinder returns to the initial state. Under the action of the first return spring 2e and the second return spring 10, the clamping mechanism 2 returns to the initial position and presses the parts. It is rotated by the motor at the bottom of the disc and passes through each inspection station in turn, and the loading and unloading work is completed at the loading position and unloading position.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A disc-type thread visual inspection device, characterized by: The invention comprises a rotating disc (1), wherein a plurality of clamping mechanisms (2) and material troughs (3) are provided on the disc (1) at equal angles, wherein the clamping mechanisms (2) and material troughs (3) are used to fix a part to be inspected, wherein the part has a threaded hole to be inspected, and a camera assembly is provided on the side of the disc (1) for photographing the threaded hole on the inspected part, wherein two groups of the camera assemblies are correspondingly configured for each threaded hole of the part, and the camera assemblies comprise cameras (4) and light sources (5), which are respectively located on the upper and lower sides of the disc (1), wherein the cameras (4) of one group of the camera assemblies are located above the disc (1), and the cameras (4) of the other group of the camera assemblies are located below the disc (1).

2. The disc-type thread visual inspection device according to claim 1, characterized in that: The disc (1) is also provided with a cylinder (6) for cooperating with the pressing mechanism (2) to press and loosen parts.

3. The disc-type thread visual inspection device according to claim 2, characterized in that: The clamping mechanism (2) includes a mounting seat (2a), a pressing block (2b) and a movable block (2c); the middle portion of the pressing block (2b) is fixed to one end of the mounting seat (2a) and the pressing block (2b) can rotate around a connection point; a sliding groove is provided on the upper portion of the mounting seat (2a); the movable block (2c) is provided in the sliding groove and can slide in the sliding groove; one end of the pressing block (2b) cooperates with one end of the movable block (2c); one end of the movable block (2c) is an inclined slope; when the pressing block (2b) and the movable block (2c) move toward each other, the other end of the pressing block (2b) is pushed downward to clamp the parts.

4. The disc-type thread visual inspection device according to claim 3, characterized in that: A bearing (2d) is provided at one end of the pressing block (2b) that cooperates with the movable block (2c), and a bearing (2d) is also provided at one end of the movable block (2c) that cooperates with the cylinder (6).

5. The disc-type thread visual inspection device according to claim 3, characterized in that: A torsion spring is provided at the connection between the pressing block (2b) and the mounting seat (2a), so that one end of the pressing block (2b) pressing the part automatically tilts upward when the movable block (2c) retreats.

6. The disc-type thread visual inspection device according to claim 3, characterized in that: A first return spring (2e) is provided on the mounting seat (2a), and two ends of the first return spring (2e) are respectively connected to the mounting seat (2a) and the movable block (2c), so that the front end of the pressing block (2b) always presses the parts tightly.

7. The disc-type thread visual inspection device according to claim 3, characterized in that: A guide rail (7) and a slider (8) are provided at the lower portion of the mounting seat (2a), a limit block (9) for limiting the limit travel of the movable block is provided on the mounting seat (2a), and a second return spring (10) is provided on the side of the mounting seat (2a), and the two ends of the second return spring (10) are respectively fixed to the side of the mounting seat (2a) and the disc (1). When the cylinder (6) is not in action, under the action of the second return spring (10), the pressing block (2b) cooperates with the material trough (3) to press the parts.

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