Mobile device for visual inspection of central point

Abstract

A center point visual inspection moving device comprises a base and a semicircular rack, the rack is vertically arranged on the base, teeth on the inner side of the rack are meshed with a driving gear, a pressing wheel is attached to the outer side of the portion, at the driving gear, of the rack, and the two ends of a rotating shaft of the driving gear and the two ends of a rotating shaft of the pressing wheel penetrate through the two sides of a U-shaped frame respectively. A gear motor used for driving the driving gear to rotate is arranged on the outer side wall of one side of the U-shaped frame, a visual camera is fixed to the lower end of the U-shaped frame, and the image collecting center of the visual camera is located on the semicircular center of the rack. According to the utility model, the visual camera carries out visual identification at each position of the rack, such as the front and the rear, and right above, so that a product is subjected to omnibearing three-dimensional detection, the central points of parts such as the surface and the side surface of the product can be found out more accurately, and the result obtained by multidirectional measurement is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of visual detection, in particular to a central point visual detection mobile device. Background Art

[0002] Visual inspection refers to the process of converting the captured target into an image signal through a machine vision product (i.e., an image capture device, such as CMOS and CCD), and then transmitting it to a dedicated image processing system. According to the pixel distribution, brightness, color and other information of the image signal, the image system converts these signals into digital signals, and extracts the characteristics of the target through various operations. Finally, the equipment action on site is controlled according to the results of these feature discriminations. A typical machine vision system includes a camera and other devices to collect images or videos, and represents the target objects in the image in a form that can be recognized by the computer. Common features include shape, color, texture and edge. Target tracking can be achieved, and the target object can be tracked in real time to maintain the consistency of the position and state of the target in continuous frames. At present, visual inspection technology has been widely used in many fields, especially industrial manufacturing, quality inspection and defect identification on the production line, visual guidance of product assembly and assembly, etc., to improve the flexibility and automation of production, especially in dangerous working environments that are not suitable for manual operation or where artificial vision is difficult to meet the requirements. In the process of large-scale industrial production, visual inspection methods can greatly improve production efficiency and the degree of automation of production.

[0003] At present, the detection of the center point of the product mainly relies on a single camera. Since most of the products to be detected are three-dimensional products, it is impossible to detect from multiple positions. For example, the utility model patent CN221099629U discloses a dimension measuring device based on a visual system, including: a bottom plate, a measuring component is installed on the surface of the bottom plate, and the measuring component includes a detection mechanism for measuring the size of the object to be detected and a lighting mechanism for providing a stable detection environment for the detection mechanism. The detection mechanism has a belt transmission system, and a power source is installed at one end of the belt transmission system. The lighting mechanism is installed inside the belt transmission system. The utility model is provided with a detection mechanism, which drives the pulley to rotate through the rotating shaft, thereby making the conveyor belt run, and the object to be detected moves to the bottom of the industrial camera through the conveyor belt, and the industrial camera measures the size of the object to be detected. Although the above device can also detect the center point of the product by adaptively changing the program, that is, finding the center point after measuring the size, this kind of detection belongs to a static detection, and it is impossible to perform a full range of visual detection of the front, back and top of the product in the same vertical plane, resulting in a certain error, which is not suitable for detection and production processing with high precision requirements. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a center point visual detection mobile device.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a center point visual detection mobile device, including a base and a semicircular rack, the rack is vertically arranged on the base, the teeth on the inner side of the rack are meshed with a driving gear, and the outer side of the rack at the driving gear position is fitted with a clamping wheel, and the two ends of the rotating shaft of the driving gear and the clamping wheel respectively pass through both sides of the U-shaped frame, and a reduction motor for driving the driving gear to rotate is arranged on the outer side wall of one side of the U-shaped frame, and a visual camera is fixed to the lower end of the U-shaped frame, and the image acquisition center of the visual camera is on the semicircular center of the rack.

[0006] Furthermore, there are two clamping wheels, which are symmetrically arranged on both sides of the driving gear, so that the driving gear and the rotating axes of the two clamping wheels are at corresponding points of the isosceles triangle structure.

[0007] Furthermore, fixed shafts passing through the semicircular center of the rack are fixed to both ends of the rack, each fixed shaft passes through a fixed plate on the surface of the base, and flange bolts for clamping the fixed shaft are screwed through the outer fixed plate.

[0008] Furthermore, the base is disc-shaped, and the semicircular center of the rack overlaps with the circle of the base surface.

[0009] Furthermore, the bottom of the base supports a plurality of pads.

[0010] Furthermore, a laser sensor is provided on the outer side wall of the U-shaped frame opposite to the reduction motor, and the laser sensor is provided with a counterweight so that the weights on both sides of the U-shaped frame are the same.

[0011] Furthermore, a pointer is fixed to the outer end of each fixed shaft, and the surface of the fixed plate outside each end is provided with angle lines arranged around the moving track of the pointer tip.

[0012] When the utility model detects the center point of a product, the driving gear rotates under the drive of the reduction motor, thereby driving the U-shaped frame to move back and forth along the rack. During the movement, since the image acquisition center of the visual camera is on the semicircular center of the rack, the visual camera performs visual recognition at various positions of the rack, such as front, back, and top, so as to perform an all-round three-dimensional detection of the product, and can more accurately find the center point of the product surface, side and other parts, and the results obtained by multi-directional measurement are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the left three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the right three-dimensional structure of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the U-shaped frame of the utility model with one side removed. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The present embodiment is described in detail below with reference to the accompanying drawings:

[0019] This embodiment provides a center point visual detection mobile device. Please refer to the accompanying drawings in the specification. Figure 1-3 .

[0020] like Figure 1-3 As shown, a center point visual detection mobile device includes a base 1 and a semicircular rack 2, the rack 2 is vertically arranged on the base 1, the teeth on the inner side of the rack 2 are meshed with a driving gear 3, and a clamping wheel 4 is attached to the outer side of the rack 2 at the driving gear 3. The two ends of the rotating shaft of the driving gear 3 and the clamping wheel 4 respectively pass through the two sides of the U-shaped frame 5, and the outer wall of one side of the U-shaped frame 5 is provided with a reduction motor 6 for driving the driving gear 3 to rotate, and a visual camera 7 is fixed to the lower end of the U-shaped frame 5, and the image acquisition center of the visual camera 7 is on the semicircular center of the rack 2.

[0021] There are two clamping wheels 4, which are symmetrically arranged on both sides of the driving gear 3, so that the rotating axes of the driving gear 3 and the two clamping wheels 4 are at corresponding points of the isosceles triangle structure, which can ensure that the entire U-shaped frame 5 runs smoothly on the rack 2, and the visual camera 7 is always aligned with the semicircular center of the rack 2 during the movement. The base 1 is disc-shaped, and the semicircular center of the rack 2 overlaps with the circle on the surface of the base 1. The bottom of the base 1 is supported by multiple pads 11.

[0022] In order to facilitate the adjustment of the inclination angle of the rack 2 and to facilitate the positioning of the product center from the side, fixed shafts 8 passing through the semicircular center of the rack 2 are fixed at both ends of the rack 2, each fixed shaft 8 passes through a fixed plate 9 on the surface of the base 1, and the outer fixed plate 9 passes through a flange bolt 10 for clamping the fixed shaft 8, and a pointer 13 is fixed to the outer end of the fixed shaft 8 at each end, and the surface of the fixed plate 9 on the outer side of each end is provided with angle lines arranged around the moving track of the tip of the pointer 13.

[0023] In order to better cooperate with other sensors, a laser sensor 12 is provided on the outer wall of the U-shaped frame 5 opposite to the reduction motor 6. The laser sensor 12 is provided with a counterweight to make the weight on both sides of the U-shaped frame 5 the same. The counterweight makes the force on both sides of the U-shaped frame 5 uniform, which is also conducive to smooth operation.

[0024] Working principle of the utility model: The utility model can be used in conjunction with equipment such as a clamp and a manipulator. The wire of the U-shaped frame 5 is spiral, which is convenient for contraction, and can be fixed to the structure such as the bracket above the U-shaped frame 5, and then electrically connected to the visual signal input end of the visual recognition system, and the power supply line of the reduction motor 6 can also be electrically connected;

[0025] During testing, the product to be tested is placed on the base 1 between the lower ends of the racks 2, and the driving gear 3 is rotated under the drive of the reduction motor 6, thereby driving the U-shaped frame 5 to move back and forth along the rack 2 on the rack 2. During the movement, since the image acquisition center of the visual camera 7 is on the semicircular center of the rack 2, the visual camera 7 performs visual recognition at various positions of the rack 2, such as front, back, and top, so as to perform an all-round three-dimensional inspection of the product, and can more accurately find the center points of the product surface, side and other parts, and the results obtained from multi-directional measurements are more accurate.

[0026] Of course, the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A center point visual inspection mobile device, comprising a base (1) and a semicircular rack (2), characterized in that: The rack (2) is vertically arranged on the base (1); the teeth on the inner side of the rack (2) mesh with the driving gear (3); the outer side of the rack (2) at the driving gear (3) is fitted with a pressure wheel (4); the two ends of the rotating shafts of the driving gear (3) and the pressure wheel (4) respectively pass through two sides of the U-shaped frame (5); a reduction motor (6) for driving the driving gear (3) to rotate is arranged on the outer side wall of one side of the U-shaped frame (5); a visual camera (7) is fixed at the lower end of the U-shaped frame (5); and the image acquisition center of the visual camera (7) is at the semicircular center of the rack (2).

2. A center point visual detection mobile device according to claim 1, characterized in that: There are two clamping wheels (4), which are symmetrically arranged on both sides of the driving gear (3), so that the rotation axes of the driving gear (3) and the two clamping wheels (4) are at corresponding points of the isosceles triangle structure.

3. A center point visual detection mobile device according to claim 1, characterized in that: Fixed shafts (8) passing through the semicircular center of the rack (2) are fixed to both ends of the rack (2), and each fixed shaft (8) passes through a fixed plate (9) on the surface of the base (1), and a flange bolt (10) for clamping the fixed shaft (8) is screwed through the outer fixed plate (9).

4. A center point visual detection mobile device according to claim 1, characterized in that: The base (1) is in the shape of a disk, and the semicircular center of the rack (2) overlaps with the circle on the surface of the base (1).

5. The mobile device for center point visual detection according to claim 1, characterized in that: The bottom of the base (1) is supported by a plurality of cushion blocks (11).

6. A center point visual detection mobile device according to claim 1, characterized in that: A laser sensor (12) is provided on the outer side wall of the U-shaped frame (5) opposite to the one on which the reduction motor (6) is provided, and the laser sensor (12) is provided with a counterweight so that the weights on both sides of the U-shaped frame (5) are the same.

7. A center point visual detection mobile device according to claim 3, characterized in that: A pointer (13) is fixed to the outer end of each end fixed shaft (8), and a surface of a fixed plate (9) outside each end is provided with an angle line arranged around the moving track of the tip of the pointer (13).

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