Small arc online detection system

Abstract

The utility model discloses an on-line detection system for a small arc. The on-line detection system comprises a manipulator used for placing and blanking a product; the OK product conveyor is arranged on one side of the manipulator and used for conveying OK products, and the NG product slideway is arranged on the inner side of the OK product conveyor and used for placing NG products; the second supporting box and the first supporting box are arranged on the other side of the manipulator and distributed at intervals, workbenches are installed on the tops of the first supporting box and the second supporting box, and the sensors are arranged on the tops of the workbenches; the adjusting device is arranged on the workbench and comprises a sliding opening formed in the top of the workbench; the device has the beneficial effects that the influence of pipe lubricating oil in a previous process on the measurement accuracy is effectively solved, and the reliability of a detection result is ensured; an on-line image measuring instrument is adopted as a ball head size detection tool, the precision requirement for small arc detection is met, the defects that three coordinates are high in environment requirement, low in detection efficiency and high in cost are overcome, and high-efficiency and low-cost on-line hundred-inspection is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure oil pipe quality inspection technology, specifically relating to a small arc online inspection system. Background Technology

[0002] As a component of the high-pressure oil circuit, the high-pressure oil pipe must withstand a certain oil pressure and ensure its sealing with the oil pump and oil rail. The front and rear spherical surfaces of the ball head are key characteristics, ensuring product sealing and maintaining the locking force of the nut, respectively. Due to the short arc lengths of the front and rear spherical surfaces (4.62 mm and 3.8 mm respectively, and central angles of 28° and 17° respectively), which fall within the scope of small arc measurement, it has always been a challenge in the measurement industry. Traditional inspection methods such as coordinate measuring machines (CMMs) and image measuring instruments can achieve the measurement, but CMMs have high environmental requirements, low inspection efficiency, and high equipment investment costs. While image measuring instruments have low environmental requirements, high inspection efficiency, and relatively low equipment costs, they still need further optimization to meet the needs of online inspection. In addition, since lubricating oil is used in the previous process, the oil must be removed before inspection to ensure measurement accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a small arc online detection system that can achieve efficient and accurate online detection of high-pressure oil pipe ball heads.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an online detection system for small circular arcs, comprising...

[0005] Robotic arms used for product placement and unloading;

[0006] An OK product conveyor is installed on one side of the robot arm for transporting OK products, and an NG product chute is installed inside the OK product conveyor for placing NG products.

[0007] The second support box and the first support box are arranged at intervals on the other side of the robot arm, and the top of the first support box and the second support box are both equipped with a worktable and a sensor on the top of the worktable.

[0008] An adjustment device is provided on the workbench. The adjustment device includes a slide opening on the top of the workbench, a lead screw rotatably provided inside the workbench, a handwheel provided at one end of the lead screw, a threaded sleeve screwed to the lead screw, and the threaded sleeve and the slide opening are slidably connected, and a fixture provided on the top of the threaded sleeve.

[0009] A cleaning fluid nozzle mounted on the top of a workbench for spraying hydrocarbon solvent onto the ball head; and an air blowing nozzle mounted on the top of a workbench for drying the ball head.

[0010] An online image measuring instrument is installed on top of another workbench for detecting ball heads.

[0011] Preferably, it also includes a support frame installed at one end of the top of the first support box, and the support frame is an inverted "L" shaped structure.

[0012] Preferably, a cylinder is installed on the top of the support frame, and the output end of the cylinder passes through the support frame and is connected to a protective cover that can be placed on the top of the workbench.

[0013] Preferably, the protective cover has an opening at the bottom, and a rubber sealing ring is installed at the opening end of the protective cover, and a smoke recovery device is provided at the top of the protective cover.

[0014] Preferably, the smoke recovery device includes an exhaust fan installed on the top of the protective cover and a processing box. The exhaust fan is equipped with two pipes, one pipe extending into the inside of the protective cover and the other pipe extending into the inside of the processing box. A door is hinged to the front surface of the processing box, an air outlet is opened on the side surface of the processing box, a U-shaped frame is installed inside the processing box, and an activated carbon mesh plate is detachably mounted on the U-shaped frame.

[0015] Preferably, the U-shaped frame has stepped openings, and the activated carbon mesh plate is installed on the stepped openings.

[0016] Preferably, the inner side of the processing box is equipped with symmetrically distributed support plates, and the support plates have limiting holes inside. The bottom of the U-shaped frame is provided with a limiting rod that passes through the limiting holes.

[0017] Preferably, one of the fixtures is provided with a first limiting cylinder, and the other fixture is equipped with a support frame. A motor is installed at the bottom inner part of the support frame, and the output shaft of the motor passes through the support frame and is connected to a turntable. A second limiting cylinder is installed at the top of the turntable.

[0018] Preferably, the first support box is equipped with a cleaning fluid tank and a water pump. The water inlet of the water pump extends into the cleaning fluid tank through a pipe, and the water outlet of the water pump is connected to the cleaning fluid nozzle through a pipe. The cleaning fluid tank is equipped with a cooling coil, and the cooling coil is connected to an external cooling water circulation system.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This effectively solves the problem of the impact of the lubricating oil in the previous process on the accuracy of measurement, and ensures the reliability of the test results;

[0021] Using an online image measuring instrument as the ball head size detection tool not only meets the accuracy requirements for small arc detection, but also overcomes the shortcomings of coordinate measuring machines (CMMs) such as high environmental requirements, low detection efficiency, and high cost, thus achieving efficient and low-cost online inspection.

[0022] The special design of the cleaning medium, protective cover, and cleaning fluid tank in the cleaning station ensures that the cleaning process is efficient, safe, and environmentally friendly, avoiding pollution of the workshop environment and potential safety hazards caused by the cleaning operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a partial cross-sectional view of the protective cover of this utility model.

[0025] Figure 3 For the present utility model Figure 2 A schematic diagram of the enlarged R region structure in the diagram;

[0026] Figure 4 For the present utility model Figure 1 A schematic diagram of the enlarged structure of region E in the diagram;

[0027] Figure 5 This is a schematic diagram of the fixture adjustment structure of this utility model;

[0028] Figure 6 For the present utility model Figure 1 A schematic diagram of the enlarged Q region structure in the diagram;

[0029] In the diagram: 1. Robotic arm; 2. OK product conveyor; 21. NG product chute; 3. First support box; 31. Support frame; 310. Cylinder; 32. Cleaning fluid nozzle; 33. Air blowing nozzle; 4. Second support box; 51. Workbench; 510. Sensor; 52. Handwheel; 53. Fixture; 530. First limiting cylinder; 54. Sliding mouth; 55. Lead screw; 56. Threaded sliding sleeve; 6. Protective cover; 61. Rubber sealing ring; 62. Exhaust fan; 63. Processing box; 630. Support plate; 6301. Limiting hole; 64. U-shaped frame; 640. Stepped opening; 6401. Activated carbon mesh plate; 641. Limiting rod; 7. Online image measuring instrument; 8. Support frame; 81. Motor; 810. Turntable; 8101. Second limiting cylinder. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figures 1-6This is the first embodiment of the present invention, which provides an online detection system for small arcs, including...

[0033] The robotic arm 1 is used for product placement and unloading. The robotic arm 1 can place the product on the fixture 53 and unload the inspected product. The robotic arm 1 of this application can be a multi-axis robotic arm.

[0034] OK product conveyor 2 is set on one side of the robot arm 1 for conveying OK products, which facilitates the discharge and collection of OK products. NG product chute 21 is set inside the OK product conveyor 2 for placing NG products, which also facilitates the discharge and collection of NG products.

[0035] The second support box 4 and the first support box 3 are arranged at intervals on the other side of the robot arm 1, which realizes the addition of the second support box 4 and the first support box 3. The top of the first support box 3 and the second support box 4 are both equipped with a worktable 51, and a sensor 510 is set on the top of the worktable 51 to detect whether there is material.

[0036] An adjustment device is provided on the worktable 51. The adjustment device includes a slide 54 opened on the top of the worktable 51, which realizes the opening of the slide 54; a lead screw 55 rotatably set inside the worktable 51, which realizes the addition of the lead screw 55; a handwheel 52 set at one end of the lead screw 55, which increases the convenience of rotating the lead screw 55; a threaded sleeve 56 screwed to the lead screw 55, and the threaded sleeve 56 and the slide 54 are slidably connected; a fixture 53 is set on the top of the threaded sleeve 56, and the product is placed on the fixture 53. Rotating the handwheel 52 drives the lead screw 55 to rotate. When the lead screw 55 rotates, the threaded sleeve 56 can move back and forth. When the threaded sleeve 56 moves back and forth, it drives the fixture 53 to move back and forth, so that the fixture 53 moves closer to or further away from the sensor 510.

[0037] A cleaning fluid nozzle 32, installed on the top of a workbench 51, is used to spray hydrocarbon solvent onto the ball head. The hydrocarbon solvent is volatile and dries quickly, enabling rapid cleaning. An air nozzle 33, also installed on the top of a workbench 51, is used to dry the ball head.

[0038] The online image measuring instrument 7, installed on top of another workbench 51 for detecting ball heads, forms a telecentric optical path of the object through an optical system, so that the optical image of the workpiece being measured falls on the instrument's reticle. Then, the standard graduations on the reticle are aimed at the workpiece image through the eyepiece to achieve the purpose of measurement. It has low environmental requirements, is very compact and lightweight, has very high detection efficiency, and can achieve instantaneous detection. The equipment investment cost is only one-tenth of that of a coordinate measuring machine.

[0039] In this embodiment, preferably, a support frame 31 is also installed at one end of the top of the first support box 3, which realizes the addition of the support frame 31. The support frame 31 has an inverted "L" shaped structure. A cylinder 310 is installed on the top of the support frame 31 by screws, which realizes the stable installation of the cylinder 310. The output end of the cylinder 310 passes through the support frame 31 and is connected to a protective cover 6 that can be covered on the top of the workbench 51. When the cylinder 310 is working, it can drive the protective cover 6 to rise and fall, which can provide protection during the cleaning process.

[0040] In this embodiment, preferably, the bottom of the protective cover 6 is open, and a rubber sealing ring 61 is installed at the open end of the protective cover 6 to increase the sealing performance of the protective cover 6. A smoke recovery device is provided at the top of the protective cover 6 to prevent hydrocarbon solvents from atomizing and polluting the workshop environment. The smoke recovery device includes an exhaust fan 62 and a processing box 63 installed at the top of the protective cover 6, realizing the addition of the exhaust fan 62 and the processing box 63. The exhaust fan 62 is provided with two pipes, one pipe extending into the interior of the protective cover 6 and the other pipe extending into the interior of the processing box 63. The exhaust fan 62 can draw smoke into the interior of the processing box 63, which is hinged to the processing box 63. The front surface of the chamber has a door that can be opened and closed. An air outlet is located on the side surface of the treatment chamber 63, through which the treated gas is discharged. A U-shaped frame 64 is installed inside the treatment chamber 63, which enables the addition of the U-shaped frame 64. An activated carbon mesh plate 6401 is installed on the U-shaped frame 64. The activated carbon mesh plate 6401 is used to purify the atomized hydrocarbon solvent. Activated carbon has a highly developed pore structure and a huge specific surface area, which makes it have a strong adsorption capacity. The tiny particles or molecules formed after the hydrocarbon solvent is atomized can be adsorbed by the pores of the activated carbon, thereby separating them from the air and achieving the purpose of purifying the air.

[0041] In this embodiment, preferably, a stepped opening 640 is provided on the U-shaped frame 64, which realizes the opening of the stepped opening 640. The activated carbon mesh plate 6401 is installed on the stepped opening 640. The stepped opening 640 increases the limitation of the activated carbon mesh plate 6401 and also facilitates the disassembly of the activated carbon mesh plate 6401 for cleaning or replacement.

[0042] In this embodiment, preferably, symmetrically distributed support plates 630 are installed on the inner side of the processing box 63, thereby increasing the number of support plates 630. The support plates 630 have a limiting hole 6301 inside, thereby increasing the opening of the limiting hole 6301. The bottom of the U-shaped frame 64 is provided with a limiting rod 641 that passes through the limiting hole 6301. The cooperation between the limiting rod 641 and the limiting hole 6301 increases the installation performance of the U-shaped frame 64.

[0043] In this embodiment, preferably, a first limiting cylinder 530 is provided on one fixture 53. Since the lower part of the product is cylindrical, the cylindrical part is inserted into the first limiting cylinder 530 to increase the product's limitation. A support frame 8 is installed on another fixture 53, realizing the addition of the support frame 8. A motor 81 is installed at the bottom of the inner part of the support frame 8, realizing the addition of the motor 81. The output shaft of the motor 81 passes through the support frame 8 and is connected to a turntable 810. When the motor 81 works, it drives the turntable 810 to rotate. A second limiting cylinder 8101 is installed on the top of the turntable 810. When the turntable 810 rotates, it drives the second limiting cylinder 8101 to rotate. Since the lower part of the product is cylindrical, the cylindrical part is inserted into the second limiting cylinder 8101 to increase the product's limitation. When the second limiting cylinder 8101 rotates, it can drive the product to rotate.

[0044] Example 2

[0045] Please see Figures 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment but differs in the following ways:

[0046] The first support box 3 is equipped with a cleaning fluid tank and a water pump, which realizes the addition of a cleaning fluid tank and a water pump. The water inlet of the water pump extends into the cleaning fluid tank through a pipe, and the water outlet of the water pump is connected to the cleaning fluid nozzle 32 through a pipe to ensure the spraying of hydrocarbon solvents. The cleaning fluid tank is equipped with a cooling coil, and the cooling coil is connected to an external cooling water circulation system to prevent hydrocarbon solvents from overheating and becoming flammable.

[0047] The robot 1 of this application can be replaced by a gantry robot instead of the multi-axis robot in Embodiment 1, thereby further improving production efficiency.

[0048] The working principle and usage process of this utility model are as follows: The robotic arm 1 places the product on a fixture 53. Turning the handwheel 52 drives the lead screw 55 to rotate. When the lead screw 55 rotates, the threaded sleeve 56 moves. The movement of the threaded sleeve 56 drives the fixture 53 to move closer to the sensor 510. After the sensor 510 detects the presence of material, the cylinder 310 operates, causing the protective cover 6 to descend, increasing the seal. The cleaning fluid nozzle 32 sprays hydrocarbon solvent onto the ball head, and the air nozzle 33 dries the ball head. The protective cover 6 rises and moves away. The robotic arm 1 then places the product on another fixture 53. Turning the handwheel 52 drives the lead screw 55 to rotate. When the 55 rotates, the threaded sleeve 56 moves. When the threaded sleeve 56 moves, it drives the fixture 53 to move, so that the fixture 53 is close to the sensor 510. After the sensor 510 detects the presence of material, the online image measuring instrument 7 detects the ball head once. The motor 81 works to drive the turntable 810 to rotate. When the turntable 810 rotates, it drives the second limiting cylinder 8101 to rotate. When the second limiting cylinder 8101 rotates, it drives the product to rotate 90°. The online image measuring instrument 7 detects the ball head again. The robot arm 1 unloads the detected product. OK products are discharged and collected through the OK product conveyor 2, and NG products are discharged and collected through the NG product chute 21.

[0049] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small arc on-line detection system, characterized in that: Comprising A mechanical arm (1) for product placement and blanking; An OK product conveyor (2) arranged on one side of the mechanical arm (1) for OK product conveying, and an NG product chute (21) arranged inside the OK product conveyor (2) for placing NG products; A second support box (4) and a first support box (3) arranged at intervals on the other side of the mechanical arm (1), and a workbench (51) mounted on the top of the first support box (3) and the second support box (4), a sensor (510) arranged on the top of the workbench (51); An adjusting device arranged on the workbench (51), which comprises a sliding port (54) opened on the top of the workbench (51), a lead screw (55) rotatably arranged inside the workbench (51), a hand wheel (52) arranged on one end of the lead screw (55), a threaded sleeve (56) screwed with the lead screw (55), the threaded sleeve (56) and the sliding port (54) are slidably connected, and a jig (53) arranged on the top of the threaded sleeve (56); A cleaning liquid nozzle (32) mounted on the top of one workbench (51) for spraying carbon hydrocarbon solvent on the ball head, and a blowing nozzle (33) mounted on the top of one workbench (51) for drying the ball head; An online image measuring instrument (7) mounted on the top of another workbench (51) for detecting the ball head.

2. The small arc on-line detection system according to claim 1, characterized in that: It also comprises a support frame (31) mounted on one end of the top of the first support box (3), and the support frame (31) is an inverted "L" type structure.

3. The small arc on-line detection system according to claim 2, characterized in that: The top of the support frame (31) is provided with a gas cylinder (310), and the output end of the gas cylinder (310) penetrates the support frame (31) and is connected with a protective cover (6) which can cover the top of the workbench (51).

4. The small-arc on-line detection system according to claim 3, characterized in that: The bottom end of the protective cover (6) is open, and the open end of the protective cover (6) is provided with a rubber sealing ring (61), and the top of the protective cover (6) is provided with a smoke recovery device.

5. The small arc on-line detection system of claim 4, wherein: The smoke recovery device comprises an exhaust fan (62) and a treatment box (63) mounted on the top of the protective cover (6), and two pipes are arranged on the exhaust fan (62), one pipe extends to the inside of the protective cover (6), and the other pipe extends to the inside of the treatment box (63), a box door hinged to the front surface of the treatment box (63), an air outlet opened on the side surface of the treatment box (63), a U-shaped frame (64) mounted in the treatment box (63), and an activated carbon mesh plate (6401) detachably arranged on the U-shaped frame (64).

6. The small-arc on-line inspection system of claim 5, wherein: The U-shaped frame (64) is provided with a stepped port (640), and the activated carbon mesh plate (6401) is mounted on the stepped port (640).

7. The small arc on-line detection system of claim 5, wherein: The inside surface of the treatment box (63) is provided with symmetrically distributed support plates (630), and the inside of the support plates (630) is provided with limiting holes (6301), and the bottom of the U-shaped frame (64) is provided with a limiting rod (641) penetrating the limiting holes (6301).

8. The small arc on-line detection system of claim 1, wherein: One of the jigs (53) is provided with a first limiting cylinder (530), and the other of the jigs (53) is provided with a supporting frame (8), the inner bottom of the supporting frame (8) is provided with a motor (81), and the output shaft of the motor (81) penetrates through the supporting frame (8) and is connected with a rotating table (810), and the top of the rotating table (810) is provided with a second limiting cylinder (8101).

9. The small-arc on-line inspection system of claim 1, wherein: The inside of the first supporting box (3) is provided with a cleaning liquid water tank and a water pump, the water inlet end of the water pump extends to the cleaning liquid water tank through a pipeline, the water outlet end of the water pump is connected with the cleaning liquid nozzle (32) through a pipeline, and the cleaning liquid water tank is provided with a cooling coil pipe, and the cooling coil pipe is connected with an external cooling water circulation system.

Images