Band screw hole defect detection device

Abstract

The utility model relates to a Band screw hole defect detection device which comprises a fixed rack, and a camera, a lens and a light source are arranged on the fixed rack; a first detection assembly is arranged below the light source and on one side of the bottom of the fixed rack, and detects the defects of screw holes of the middle plate; a second detection assembly is arranged on the other side of the bottom of the fixed rack and is used for detecting the defects of screw holes in the side wall; the second detection assembly is a turnover mechanism, when the side wall screw hole defect is detected, the second detection assembly is turned over to the position below the first detection assembly, and when the middle plate screw hole defect is detected, the second detection assembly is turned over to the side face of the first detection assembly. According to the utility model, the bottom and the side wall of the screw hole are imaged through the camera, the lens, the ring light and the mode of multiple reflection through the endoscope and the prism; manual naked eye defect detection can be replaced, so that damage to human eyes is reduced; and the detection time can be shortened to meet customer requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to visual inspection technical field especially Band screw hole defect detection device. BACKGROUND

[0002] Band refers to the middle layer or support inside the device, which is used to fix and support internal components; Band screw hole is a screw hole used to connect and fix internal components of electronic devices (such as mobile phones, tablets), commonly found on device shells or internal supports.

[0003] In the mobile phone Band product, there are many small screw holes on the inner side wall and the middle plate, which are used for the assembly of mobile phone products; due to the small diameter of the screw hole itself, and the difficulty of imaging the inner side wall, the traditional naked eye can hardly see the foreign matter defects on the bottom and inner wall of the screw hole; even with the help of an imaging system, the traditional imaging system cannot clearly take pictures of the inner wall of the screw hole.

[0004] The current prior art relies on electronic magnifying glasses and human eyes to make judgments. However, if the human eye or magnifying glass is used in the production process, it will cause visual fatigue of the personnel over a long period of time, and the production efficiency and quality will also be reduced. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a Band screw hole defect detection device based on a five-axis flexible instrument, which uses an endoscope and a prism to form an optical path system for online detection of Band screw holes, and can solve the foreign matter defects on the bottom and side wall of the screw hole in the mobile phone middle frame.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a Band screw hole defect detection device, comprising a fixed rack, a camera, a lens and a light source are arranged on the fixed rack; a first detection assembly is arranged below the light source and on one side of the bottom of the fixed rack, the first detection assembly detects middle plate screw hole defects; a second detection assembly is arranged on the other side of the bottom of the fixed rack, the second detection assembly detects side wall screw hole defects; the second detection assembly is a turnover mechanism, when detecting side wall screw hole defects, the second detection assembly is turned over to the lower side of the first detection assembly, when detecting middle plate screw hole defects, the second detection assembly is turned over to the side of the first detection assembly.

[0007] Further, the first detection assembly comprises a first mounting bracket, and an endoscope assembly is arranged on the first mounting bracket; the endoscope assembly cooperates with the camera, the lens and the light source to image the middle plate screw hole.

[0008] Further, the second detection assembly includes a rotary air cylinder mounted on the fixed rack, the output end of the rotary air cylinder is connected with a rotary arm, the bottom of the rotary arm is connected with a second mounting bracket, and the end of the second mounting bracket is provided with a prism.

[0009] Further, when the second detection assembly is turned to below the endoscope assembly, the 45° inclined surface of the prism faces upward.

[0010] Further, the turning angle of the second detection assembly is 0-90°.

[0011] The utility model discloses a beneficial effect is, the defect in the background art is solved, through camera, lens, ring light and through endoscope and prism multiple reflection mode, the bottom and lateral wall of screw hole are imaged, a product 40 more screw holes can be imaged clearly in very short time, not only can replace artificial naked eye to detect the defect and reduce the damage to the human eye, but also can image clearly the inside and lateral wall of the screw hole with only 4mm diameter through the multiple reflection method of prism, thereby can shorten the detection time to meet the customer demand. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structure schematic diagram of the utility model,

[0013] Fig. 2 It is the structure schematic diagram of the first detection module and the second detection module of the utility model,

[0014] In the drawing: 1, fixed rack, 2, camera, 3, lens, 4, light source, 5, first detection assembly, 6, second detection assembly, 7, product,

[0015] 51, first mounting bracket, 52, endoscope assembly,

[0016] 61, rotary air cylinder, 62, rotary arm, 63, second mounting bracket, 64, prism. DETAILED DESCRIPTION

[0017] Now the utility model is further detailed in connection with the drawing and preferred embodiment. These drawings are all simplified schematic diagram, just with the schematic way of the basic structure of the utility model, therefore it just shows the constitution related with the utility model.

[0018] As Figs. 1-2 Shown in a kind of Band screw hole defect detection device, based on five-axis flexible instrument, using endoscope and prism mode detects middle plate screw hole and lateral wall screw hole;

[0019] The utility model relates to a kind of detection device for middle plate and side wall screw hole, including fixed rack 1, the fixed rack 1 is provided with camera 2, lens 3 and light source 4;The lower side of the light source, the bottom of fixed rack is provided with first detection component 5, and the first detection component 5 detects middle plate screw hole defect;The other side of the bottom of fixed rack 1 is provided with second detection component 6, and the second detection component 6 detects side wall screw hole defect;The second detection component is overturning mechanism, when detecting side wall screw hole defect, the second detection component overturns to the lower side of first detection component, when detecting middle plate screw hole defect, the second detection component overturns to the side of first detection component.

[0020] Camera 2 uses 1200W-USB port color area array camera, lens 3 focal length 70mm, resolution 10 μm, lens WD220mm, lens scene depth 1mm, camera imaging angle 90 °, light source 4 uses white ring light, light source angle 90 °.

[0021] First detection component 5 includes first mounting bracket 51, and the first mounting bracket is provided with endoscope component 52;The endoscope component cooperates with camera, lens and light source to carry out middle plate screw hole imaging.

[0022] Second detection component 6 includes rotating cylinder 61 installed on fixed rack, the output end of the rotating cylinder is connected with rotating arm 62, and the bottom of the rotating arm is connected with second mounting bracket 63, and the end of the second mounting bracket is provided with prism 64.

[0023] The overturning angle of second detection component is 0~90 °. When second detection component overturns to the lower side of endoscope component, the 45 ° inclined surface of prism faces upwards. The overturning structure of second detection component can avoid mechanism interference problem when middle hole and side wall screw hole are imaged.

[0024] Camera, lens, light source, endoscope component can realize overall up and down Z-axis lifting movement;

[0025] Prism can be lifted and lowered by rotating cylinder, when detecting middle plate screw hole, rotating cylinder is lifted, when detecting side wall screw hole, rotating cylinder is lowered;

[0026] Product can realize X-axis left and right, Y-axis front and back, C-axis rotation, A-axis tilting movement on five-axis flexible instrument (five-axis flexible instrument is prior art), guaranteeing that next screw hole can be switched quickly;

[0027] Using ring light (annular light source) can detect foreign matter defect in screw hole;

[0028] Trajectory teaching can be carried out for screw hole in different positions of middle plate and side wall, guaranteeing that each screw hole can be covered.

[0029] During detection, only the endoscope is used for the screw holes on the middle plate in the Band, the bottom of the middle plate screw holes is imaged in the first imaging, the inner side wall of the middle plate screw holes is imaged in the second imaging, and the bottom and the inner side wall of the 20 screw holes on the middle plate of the whole product can be quickly photographed and detected through the five-axis flexible instrument track mode; and for the screw holes on the inner side wall of the Band, the combination of the endoscope and the prism is used, the imaging principle of the prism is used in cooperation with the endoscope, the bottom of the inner side wall screw holes is imaged in the first imaging, the inner side wall of the inner side wall screw holes is imaged in the second imaging, and the bottom and the inner side wall of the 20 screw holes on the inner side wall of the whole product can be quickly photographed and detected through the five-axis flexible instrument track mode; so as to realize online real-time detection, improve the product production speed, and avoid the defective products from flowing into the market.

[0030] The above description is only a specific embodiment of the present application, various examples do not constitute a limitation on the essential content of the present application, and the person skilled in the art can modify or deform the previously described specific embodiments after reading the specification without departing from the essence and scope of the present application.

Claims

1. A band hole defect detection apparatus characterized by: The utility model provides a kind of middle plate screw hole detection device, including fixed rack, the camera, lens and light source are provided on the fixed rack;The lower side of the light source, the bottom of fixed rack one side is equipped with first detection component, and the first detection component detects middle plate screw hole defect;The other side of the bottom of fixed rack is equipped with second detection component, and the second detection component detects side wall screw hole defect;The second detection component is turnover mechanism, when detecting side wall screw hole defect, the second detection component is overturned to the lower side of first detection component, when detecting middle plate screw hole defect, the second detection component is overturned to the side of first detection component.

2. The Band hole defect detection apparatus of claim 1, wherein: The first detection component includes a first mounting bracket, and the first mounting bracket is provided with a endoscope assembly.

3. The Band Hole Defect Inspection Apparatus of claim 1, wherein: The second detection component includes a rotary cylinder mounted on the fixed rack, an output end of the rotary cylinder is connected with a rotary arm, a bottom of the rotary arm is connected with a second mounting bracket, and an end of the second mounting bracket is provided with a prism.

4. The Band Hole Defect Inspection Apparatus of claim 3, wherein: When the second detection component is turned under the endoscope assembly, the 45° inclined surface of the prism faces upward.

5. The Band Hole Defect Inspection Apparatus of claim 3, wherein: The turning angle of the second detection component is 0-90°.

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