A surface defect detection device for a forged member

Abstract

The present application relates to the field of forging surface detection, especially to a kind of forging surface defect detection device, including frame shell, the front of frame shell is provided with spraying pipe;Roller body rotation is arranged in the rear of spraying pipe, several scrapers are uniformly arranged around roller body, the edge of scraper protrudes roller body, scraper is inclined to the direction of rotation of roller body, the surface of roller body is located at the root of scraper and is provided with air groove;Motor, motor is used to drive roller body to rotate;Air groove is connected with air pressure component to generate negative pressure;Liquid supply component is connected with spraying pipe by valve component, for conducting pigment liquid to spraying pipe, the pigment liquid is sprayed to the surface of forging by spraying pipe in the present application, then pigment liquid on the plane part of forging is scraped in time by rotating scraper, cooperate with the negative pressure of air groove part and suck raw material liquid, so that the raw material liquid is retained in the surface defect part of forging, the defect distribution on the surface of forging is obviously shown by the color difference between pigment liquid and plane part of forging, and the detection speed is fast, and the detection effect is obvious.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of forging surface detection, in particular to a kind of forging surface defect detection device. BACKGROUND

[0002] Forging is a kind of forging mechanical pressure is exerted on metal blank, so that it produces plastic deformation to obtain a certain mechanical properties, a certain shape and size of the processing method of forgings, through forging can eliminate the loose of metal during smelting process, such as casting defects, optimize microstructure, at the same time, due to the preservation of complete metal flow line, the mechanical properties of forgings are generally superior to that of casting of the same material, but the surface of the forgings is prone to defects, such as cracks, pits, wrinkles, etc., but not easy to be clearly manifested, using eddy current testing, magnetic powder detection is more common surface detection method, but the required equipment is complex, operation has certain difficulty, the detection result time is long, and the detection cost is high. SUMMARY

[0003] The present application aims to solve the problems existing in the prior art: the surface of the forgings is prone to defects, such as cracks, pits, wrinkles, etc., but not easy to be clearly manifested, using eddy current testing, magnetic powder detection is more common surface detection method, but the required equipment is complex, operation has certain difficulty, the detection result time is long, and the detection cost is high.

[0004] To solve the problems existing in the prior art, the present application provides a kind of forging surface defect detection device, including frame shell, the front of frame shell is provided with spraying pipe;

[0005] Roller, roller is rotationally arranged behind the spraying pipe, a plurality of scrapers are uniformly arranged around the roller, the scraper protrudes from the edge of the roller, the scraper is inclined to the rotation direction of the roller, and the surface of the roller is provided with a gas groove at the root of the scraper;

[0006] Motor, motor is used to drive the rotation of the roller;

[0007] Air pressure assembly, the gas groove is connected to the air pressure assembly to generate negative pressure;

[0008] Liquid supply assembly, liquid supply assembly is connected to the spraying pipe through valve assembly, for conducting pigment liquid to the spraying pipe.

[0009] Preferably, the air pressure assembly includes a housing, a valve plate is slidably fitted on the surface of the housing, the valve plate is connected to the housing by a spring, so that the valve plate can be elastically moved to change the space in the housing, the housing is connected to the gas groove through the inwardly conductive one-way valve, the housing is connected to the liquid supply assembly through the outwardly conductive one-way valve, and the output shaft of the motor is fixed with a cam, which extrudes and contacts the valve plate.

[0010] Preferably, the air pressure assembly is symmetrically arranged two, the cam is arranged between the valve plates of the two air pressure assemblies, and the motor drives the cam to rotate to alternately press the two valve plates.

[0011] Preferably, the liquid supply assembly comprises a pigment tank, the shell is communicated with the pigment tank through an outwardly open one-way valve, and the bottom of the pigment tank is connected with the spraying pipe through the valve assembly.

[0012] Preferably, the valve assembly comprises a valve shell, a valve cavity is arranged in the valve shell, the two ends of the valve cavity are communicated with the bottom of the pigment tank and the spraying pipe through pipelines, an active cavity penetrating the cross section of the valve cavity is arranged in the valve shell, a valve body is elastically slid in the active cavity through a spring, a handle is fixed on the surface of the pigment tank, a rotating rod is rotatably arranged on the surface of the handle, and the end of the rotating rod is connected with the valve body through a pull rope.

[0013] Preferably, the top of the pigment tank is fixedly communicated with a barrel shell, an upper portion of the barrel shell is provided with a through port, and a plug column is elastically slid in the barrel shell through a spring.

[0014] Preferably, the two ends of the scraper are rotatably connected with the roller body, a pinion is fixed on one rotating end of the scraper, a gear wheel is rotatably arranged on the end of the roller body, the gear wheel synchronously meshes with all pinions, a worm wheel is coaxially fixed on the gear wheel, and a worm is connected with the worm wheel.

[0015] Compared with the related art, the forging surface defect detection device has the following beneficial effects:

[0016] 1. The forging surface defect detection device sprays the pigment liquid to the surface of the forging through the spraying pipe, timely scrapes off the pigment liquid on the planar part of the forging through the rotating scraper, and makes the raw material liquid be sucked away through the negative pressure of the air groove part, so that the raw material liquid is reserved on the defect part of the surface of the forging, the color of the pigment liquid and the planar part of the forging is relatively obvious, the defect distribution on the surface of the forging is displayed, the detection speed is fast, and the detection effect is obvious.

[0017] 2. The forging surface defect detection device drives the rotation of the roller body through the motor, rotates the cam to press the valve plate, makes the air groove part generate the negative pressure through the air suction, makes the air suction gas enter the pigment tank to increase the air pressure, synchronously completes the liquid spraying driving and the liquid suction driving, and has good working coordination effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is one of the overall structure schematic diagrams of the present application;

[0019] Figure 2 is the second overall structure schematic diagram of the present application;

[0020] Figure 3 is the air pressure assembly distribution structure schematic diagram of the present application;

[0021] Figure 4The schematic diagram of the air pressure assembly structure of the present application;

[0022] Figure 5 The schematic diagram of the roller body driving connection structure of the present application;

[0023] Figure 6 The schematic diagram of the scraper distribution structure of the present application;

[0024] Figure 7 The schematic diagram of the scraper angle adjusting structure of the present application;

[0025] Figure 8 The schematic diagram of the air groove through structure of the present application;

[0026] Figure 9 The schematic diagram of the valve assembly structure of the present application;

[0027] Figure 10 The schematic diagram of the valve assembly structure of the present application;

[0028] Figure 11 The schematic diagram of the constant pressure exhaust structure of the paint box of the present application.

[0029] The figure label: 1, paint box; 11, cylinder shell; 12, plug column; 13, through port; 2, handle; 3, frame shell; 4, roller body; 41, air groove; 42, through cavity; 5, motor; 6, valve assembly; 61, rotating rod; 62, valve shell; 63, pull rope; 64, valve cavity; 65, movable cavity; 66, valve body; 7, spraying pipe; 8, scraper; 81, small gear; 82, large gear; 83, worm wheel; 84, worm; 9, air pressure assembly; 91, shell; 92, valve plate; 93, cam. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0031] The specific implementation of the present application is described in detail below in combination with specific examples.

[0032] Example one

[0033] As Figure 1 , Figure 2 , Figure 6 , Figure 8As shown in the figure, a kind of forging surface defect detection device, including frame shell 3, at the bottom of frame shell 3 front end fixed spray pipe 7, spray pipe 7 has transversely extended pipe body, the surface of pipe body is arranged to set multiple downward spray heads, at the bottom of frame shell 3 behind spray pipe 7 rotatably mounted roller body 4, the two ends of roller body 4 have expanded diameter part, around the surface of roller body 4 evenly set several scrapers 8, scraper 8 is made of hard rubber or plastic, the two ends of scraper 8 are connected with the expanded diameter part of roller body 4, scraper 8 is inclined to the rotating direction of the roller body 4, and the outer end of scraper 8 protrudes the edge of roller body 4, air groove 41 is formed on the surface of roller body 4 at the root position of scraper 8, one end of roller body 4 is provided with through cavity 42, and air groove 41 is communicated with through cavity 42;

[0034] As shown in the figure, Figure 3 、 Figure 4 Two groups of air pressure components 9 are symmetrically distributed on the surface of frame shell 3, air pressure component 9 includes square shell 91, the opposite surface of shell 91 is penetrated, valve plate 92 is slidably fitted on the penetrated surface of shell 91, valve plate 92 is connected with shell 91 by spring, inward and outward one-way valves are mounted on the surface of shell 91, the inward one-way valve is connected with through cavity 42 by pipeline and rotary joint, motor 5 is mounted on the surface of frame shell 3, shaft rod is fixed on the output shaft of motor 5, shaft rod penetrates between two valve plates 92, cam 93 is fixed on the surface of shaft rod, and cam 93 is used for alternately pressing two valve plates 92;

[0035] As shown in the figure, Figure 5 The end of shaft rod is connected with roller body 4 by belt drive, so that motor 5 can drive roller body 4 to rotate;

[0036] As shown in the figure, Figure 9 、 Figure 10 Liquid supply component includes pigment tank 1 for containing pigment liquid, and pigment tank 1 is fixed on the surface of frame shell 3, shell 91 is communicated with pigment tank 1 by outward one-way valve, valve assembly 6 includes valve shell 62, valve cavity 64 is formed in valve shell 62, the two ends of valve cavity 64 are respectively communicated with the bottom of pigment tank 1 and spray pipe 7 by pipeline, movable cavity 65 is formed in valve shell 62 and penetrates the section of valve cavity 64, valve body 66 is elastically slid in movable cavity 65 by spring, handle 2 is fixed on the surface of pigment tank 1, rotating rod 61 is rotatably mounted on the surface of handle 2, and the end of rotating rod 61 is connected with valve body 66 by pull rope 63;

[0037] As shown in the figure, Figure 11 Connecting cylinder shell 11 is fixed on the top of pigment tank 1, through hole 13 is formed in the upper part of cylinder shell 11, and plug column 12 is elastically slid in cylinder shell 11 by spring;

[0038] The pigment liquid is placed in the pigment box 1. When inspecting the surface of the forged part, the motor 5 is turned on to drive the cam 93 and the roller 4 to rotate synchronously. The cam 93 alternately squeezes the two valve plates 92, and the elastic force of the spring causes the two valve plates 92 to slide alternately in the housing 91. The space in the housing 91 is alternately compressed and expanded. When the space in the housing 91 is compressed, the gas is conducted into the pigment box 1 through the one-way valve that conducts outward. When the space in the housing 91 is expanded, the external air is introduced into the housing 91 through the air groove 41, the through cavity 42, and the one-way valve that conducts inward, thereby gradually increasing the air pressure in the pigment box 1. The air groove 41 absorbs air to generate negative pressure.

[0039] The device is attached to the surface of the forging and moves in the detection direction, pressing the rotating rod 61 to rotate, so that the end of the rotating rod 61 pulls the pull rope 63, and the valve body 66 overcomes the elastic force and moves to open the valve chamber 64. The pigment liquid in the pigment box 1 is discharged from the pipeline under the action of air pressure, and the pigment liquid is introduced into the spray pipe 7 through the valve chamber 64. The pigment liquid is sprayed on the surface of the forging through the spray pipe 7. The roller body 4 drives the scraper 8 to rotate synchronously, and the scraper 8 contacts the surface of the forging. The scraper 8 scrapes the pigment liquid on the surface of the forging. The scraped pigment liquid is led back into the pigment box 1 by the negative pressure along the air flow. The pigment liquid on the plane of the forging is scraped off, and the pigment liquid on the defective parts such as pits and cracks on the surface of the forging is retained. The defect distribution on the surface of the forging is more clearly displayed through the color of the pigment liquid and the plane of the forging.

[0040] When the scraper 8 is continuously driven to rotate and scrape the pigment liquid without spraying, the air pressure in the pigment box 1 gradually increases, and the air pressure pushes the plug 12 to overcome the elastic force and move upward. The plug 12 gradually opens the opening 13 to release the air pressure in the pigment box 1, so that the air pressure in the pigment box 1 is maintained in a constant range, thereby improving safety in use.

[0041] Example 2

[0042] like Figure 7 As shown, both ends of the scraper 8 are rotatably connected to the expanded diameter portion of the roller body 4. A small gear 81 is fixed to one rotating end of the scraper 8. A large gear 82 is rotatably mounted on the end of the roller body 4. The large gear 82 synchronously meshes with all the small gears 81. A worm gear 83 is coaxially fixed to the large gear 82. A worm 84 is rotatably mounted on the side of the roller body 4. The worm gear 83 is meshed with the worm 84.

[0043] The worm 83 is driven by rotating the worm 84 to rotate the large gear 82, and the scraper 8 is rotated through the meshing transmission of the large gear 82 and the small gear 81, which is used to adjust the inclination angle of the scraper 8 so that the scraper 8 can more stably fit the surface of the forging to scrape the pigment liquid on the flat part.

Claims

1. A forging surface defect detection device, characterized in that: include: A frame shell (3), wherein a spray pipe (7) is provided at the front of the frame shell (3); A roller body (4), the roller body (4) is rotatably arranged behind the spray pipe (7), a plurality of scrapers (8) are evenly arranged around the roller body (4), the scrapers (8) protrude from the edge of the roller body (4), the scrapers (8) are inclined in the direction of rotation of the roller body (4), and an air groove (41) is provided on the surface of the roller body (4) at the root of the scrapers (8); The motor (5) is used to drive the roller (4) to rotate: A pneumatic component (9), wherein the air groove (41) is connected to the pneumatic component (9) to generate negative pressure; a liquid supply assembly connected to the spray pipe (7) via a valve assembly (6) and used for conducting pigment liquid to the spray pipe (7); The pneumatic assembly (9) includes a housing (91), the surface of the housing (91) is slidably adapted to be fitted with a valve plate (92), the valve plate (92) being connected to the housing (91) via a spring so that the valve plate (92) can elastically move to change the space within the housing (91), the housing (91) being connected to the air groove (41) via an inwardly conducting one-way valve, and the housing (91) being connected to the liquid supply assembly via an outwardly conducting one-way valve, and a cam (93) being fixed to the output shaft of the motor (5), the cam (93) being pressed and contacted with the valve plate (92).

2. The forging surface defect detection device according to claim 1, characterized in that: Two pneumatic components (9) are symmetrically arranged, and the cam (93) is arranged between the valve plates (92) of the two pneumatic components (9). The motor (5) drives the cam (93) to rotate and alternately squeeze the two valve plates (92).

3. The forging surface defect detection device according to claim 1, characterized in that: The liquid supply assembly comprises a paint box (1), a housing (91) is connected to the paint box (1) via a one-way valve that is open to the outside, and the bottom of the paint box (1) is connected to the spray pipe (7) via a valve assembly (6).

4. The forging surface defect detection device according to claim 3, characterized in that: The valve assembly (6) includes a valve housing (62), a valve cavity (64) is provided in the valve housing (62), and the two ends of the valve cavity (64) are connected to the bottom of the paint box (1) and the spray pipe (7) through pipelines respectively. A movable cavity (65) is provided inside the valve housing (62) and passes through the cross section of the valve cavity (64). A valve body (66) slides elastically in the movable cavity (65) through a spring. A handle (2) is fixed on the surface of the paint box (1), and a rotating rod (61) is rotatably installed on the surface of the handle (2). The end of the rotating rod (61) is connected to the valve body (66) through a pull rope (63).

5. The forging surface defect detection device according to claim 3, characterized in that: The top of the paint box (1) is fixedly connected to a cylindrical shell (11), an opening (13) is opened on the upper part of the cylindrical shell (11), and a plug (12) is elastically slidable in the cylindrical shell (11) through a spring.

6. The forging surface defect detection device according to claim 1, characterized in that: The two ends of the scraper (8) are rotatably connected to the roller body (4); a small gear (81) is fixed to one rotating end of the scraper (8); a large gear (82) is rotatably mounted on the end of the roller body (4); the large gear (82) is synchronously meshed with all the small gears (81); a worm gear (83) is coaxially fixed to the large gear (82); and the worm gear (83) is meshed with a worm (84).

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