Air tightness detection device for aluminum alloy casting

Abstract

The invention relates to an air tightness detection device for an aluminum alloy casting. Relates to the technical field of aluminum alloy casting airtightness detection, and comprises a rotating assembly used for transferring aluminum alloy castings, a visual detection assembly is arranged on one side of the rotating assembly, and a transmission assembly is arranged on the side, away from the visual detection assembly, of the rotating assembly; an air tightness detection assembly is arranged below the transmission assembly; firstly, an aluminum alloy casting is placed in a placing frame, the placing frame can limit the aluminum alloy casting, the aluminum alloy casting is prevented from shaking or displacing, and it is guaranteed that follow-up aluminum alloy casting detection work can be normally carried out; the first air cylinder drives the first sliding base to move so that the multiple CCD cameras can be driven to vertically move, and the second motor drives the sectional material frame to transversely move through the lead screw. And the rotating cylinder, the cylinder I and the motor II are matched to enable the plurality of CCD cameras to move in multiple directions, so that the detection range of the plurality of CCD cameras is enlarged.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of aluminum alloy castings, and in particular to an air tightness detection device for aluminum alloy castings. Background Art

[0002] Aluminum alloy castings refer to equipment and devices made of aluminum alloy by casting. Generally, aluminum alloy parts of various shapes and sizes are obtained by pouring heated liquid aluminum or aluminum alloy into the mold cavity using a sand mold or a metal mold. There are also aluminum alloy parts obtained by die pressing, which are usually called aluminum die castings.

[0003] Aluminum alloy castings are of various types and have a wide range of uses. For example, aluminum alloy wheels, transmission housings, pressure cooker liner and other items are all aluminum alloy castings. Taking the pressure cooker liner as an example, such aluminum alloy castings will be placed with liquids such as water in the castings when in use, and they also need to be used in a high-pressure environment. Therefore, the aluminum alloy castings need to have good air tightness, otherwise liquid leakage and other problems will occur, affecting the normal use of the aluminum alloy castings; Chinese patent announcement number CN 107677419 A discloses a device for detecting the air tightness of aluminum alloy die castings, and its structure includes a control box, a pressure gauge, a controller, an emergency stop button, a main platform, an indicator light, a handle, a main box, a workbench, a heating device, a detection probe, and a support column. The emergency stop button is installed on the outer surface of the main platform, and the heating device is composed of a heating wire, a heating plate, a wire, a fixing frame, and a shell. The present invention provides a device for detecting the air tightness of aluminum alloy die castings, and a heating device is independently arranged in the structure;

[0004] The above-mentioned airtightness device performs airtightness detection on the aluminum alloy casting by means of a detection probe. However, the airtightness detection of the aluminum alloy casting needs to be performed in a sealed environment. The above-mentioned airtightness device only places the aluminum alloy casting on a workbench during detection. There is no isolation between the space inside the aluminum alloy casting and the external environment, so that the pressure value of the space inside the aluminum alloy casting is the same as the pressure value of the external environment. Therefore, the airtightness detection of the aluminum alloy casting cannot be performed. Summary of the invention

[0005] Technical issues to be solved

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, meet the actual needs, and provide an aluminum alloy casting airtightness detection device that can perform airtightness detection by water pressure. The airtightness detection component cooperates with the negative pressure component to press and seal the aluminum alloy casting, so that the space inside the aluminum alloy casting is in a sealed state, and then water is injected into the space inside the aluminum alloy casting. The airtightness of the aluminum alloy casting is detected by observing the changes in the pressure gauge to solve the above technical problems.

[0007] Technical Solution

[0008] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0009] An aluminum alloy casting air tightness detection device comprises a rotating assembly for transporting aluminum alloy castings, a visual detection assembly is arranged on one side of the rotating assembly, and a transmission assembly is arranged on the side of the rotating assembly away from the visual detection assembly; an air tightness detection assembly is arranged below the transmission assembly, and a conveying device is arranged on the side of the transmission assembly away from the rotating assembly; a water tank is arranged below the rotating assembly, a water pump is arranged on one side of the water tank, and the water pump is fixedly connected to a pipeline assembly, and the pipeline assembly is fixedly connected to the air tightness detection assembly;

[0010] The airtight detection assembly comprises an outer cylinder, an inner cylinder is arranged on the inner side of the outer cylinder, and a space for water flow is provided between the inner cylinder and the outer cylinder; a sealing sleeve is fixedly connected to the top of the outer cylinder, and a circular hole for water flow is provided in the middle of the top of the sealing sleeve; a plurality of rotating parts are evenly rotatably connected to the top of the sealing sleeve, and a plurality of rotating parts are provided with a convex block at one end away from the sealing sleeve; a plurality of rotating parts are provided with a slide groove at the lower end, and a second connector is slidably connected in the plurality of slide grooves; a sealing cover is fixedly connected to the top of the inner cylinder, and a plurality of second connectors are rotatably connected to the sealing cover at one end away from the rotating parts; the bottom of the inner cylinder is fixedly connected to the second cylinder;

[0011] The transmission assembly includes a negative pressure assembly, which includes a suction nozzle, which is located above the sealing sleeve; a pressure cylinder is provided on the outside of the suction nozzle, and the lower end of the suction nozzle is located below the pressure cylinder, and the top of the pressure cylinder is fixedly connected to the bottom of the connecting cylinder; a spring is provided inside the connecting cylinder, the bottom of the spring is fixedly connected to the top of the pressure cylinder, and the top is fixedly connected to a movable plate; a connecting tube is provided on the inside of the spring, the bottom of the connecting tube is fixedly connected to the top of the suction nozzle, and the top is fixedly connected to the negative pressure tube, and a circular hole for the negative pressure tube to pass through is provided in the middle of the movable plate.

[0012] As a further technical solution of the present invention, the rotating assembly includes a rotating table, and a plurality of placement frames for placing aluminum alloy castings are evenly arranged on the top of the rotating table; a connecting plate is fixedly connected to the bottom of the rotating table, and the connecting plate is rotatably connected to the top of the frame body, and a transmission wheel is provided below the connecting plate; the middle of the transmission wheel is fixedly connected to the lower end of the transmission shaft, and the top of the transmission shaft is fixedly connected to the connecting plate; a motor 1 is provided on one side of the transmission wheel, and the transmission wheel is transmission-connected to the output end of the motor 1 through a belt; the lower end of the transmission shaft is rotatably connected to the bearing seat, and the bearing seat is fixedly connected to the bottom of the support plate, and the support plate is fixedly connected to the frame body.

[0013] As a further technical solution of the present invention, the pipeline assembly includes a water outlet pipe, which is fixedly connected to the water outlet end of the water pump, and the water inlet end of the water pump is fixedly connected to the water tank; the end of the water outlet pipe close to the water pump is fixedly connected to a return pipe 2, and the end of the return pipe 2 away from the water outlet pipe is fixedly connected to the water tank; the end of the water outlet pipe away from the water pump is fixedly connected to a connecting tee, and the other two ports of the connecting tee are respectively fixedly connected to the pressure measuring pipe and the drainage pipe.

[0014] As a further technical solution of the present invention, the pressure measuring pipe is fixedly connected to the frame body through a fixing seat, and a pressure gauge is provided at one end of the pressure measuring pipe away from the connecting tee; one end of the drainage pipe away from the connecting tee is fixedly connected to the lower end of the outer cylinder; a return pipe 1 is provided on one side of the drainage pipe, one end of the return pipe 1 is fixedly connected to a sealing sleeve, and the sealing sleeve is provided with a circular hole for the return pipe 1 to pass through; one end of the return pipe 1 away from the sealing sleeve is fixedly connected to the water tank; the water outlet pipe is installed with solenoid valve 2, the return pipe 1 is installed with solenoid valve 3, and the return pipe 2 is installed with solenoid valve 1.

[0015] As a further technical solution of the present invention, the negative pressure component is slidably connected to the vertical moving component, and the vertical moving component is slidably connected to the horizontal moving component; the vertical moving component includes a slide seat 2, which is fixedly connected to the top of the connecting tube; the side of the slide seat 2 away from the connecting tube is slidably connected to the connecting seat 2, and the side of the connecting seat 2 away from the slide seat 2 is fixedly connected with a rib plate; the bottom of the rib plate is fixedly connected to the middle of the top of the slide seat 3; the top of the connecting seat 2 is fixedly connected with a cylinder 3, the telescopic rod of the cylinder 3 is fixedly connected to the slide seat 2, and the top of the connecting seat 2 is provided with a circular hole for the telescopic rod of the cylinder 3 to pass through.

[0016] As a further technical solution of the present invention, the lateral moving component includes two connecting seats three, and the two connecting seats three are respectively slidably connected to the two ends of the sliding seat three; the two connecting seats three are fixedly connected to the vertical frames at both ends of the bottom, and the bottoms of multiple vertical frames are fixedly connected to the top of the frame body; the top ends of one of the two connecting seats three are fixedly connected to the vertical plates, and the two vertical plates are rotationally connected to the screw rod two; one end of the screw rod two is fixedly connected to the motor three, and the motor three is fixedly connected to the vertical plate.

[0017] As a further technical solution of the present invention, the visual inspection component includes a support frame, on the inner side of which are installed a plurality of CCD cameras; the top middle of the support frame is fixedly connected to the output shaft of a rotating cylinder, and the rotating cylinder is fixedly connected to a slide seat; the side of the slide seat away from the rotating cylinder is slidably connected to a connecting seat, and the top of the connecting seat is fixedly connected to a cylinder; the telescopic rod of the cylinder is fixedly connected to the top of the slide seat, and a circular hole is provided at the top of the connecting seat for the passage of the telescopic rod of the cylinder; the bottom of the connecting seat is fixedly connected to the top middle of the profile frame.

[0018] As a further technical solution of the present invention, the bottoms of both ends of the profile frame are respectively slidably connected to two guide rail seats, and the two guide rail seats are fixedly connected to the top of the frame body; a base is provided between the two guide rail seats, and a connecting piece 1 is slidably connected to the base, and the connecting piece 1 is fixedly connected to the profile frame, and the base is fixedly connected to the top of the frame body; a screw rod 1 is connected to the middle thread of the connecting piece 1, and both ends of the screw rod 1 are rotatably connected to the base; a motor 2 is fixedly connected to one end of the base away from the rotating assembly, and the output shaft of the motor 2 is fixedly connected to one end of the screw rod 1.

[0019] As a further technical solution of the present invention, the water tank is located inside the frame body, and the water pump is fixedly connected to the frame body; a controller is provided on one side of the frame body.

[0020] Beneficial effects:

[0021] A. In the present invention, the aluminum alloy casting is first placed in a placement frame, and the placement frame can limit the aluminum alloy casting to prevent the aluminum alloy casting from shaking or displacement, so as to ensure that the subsequent aluminum alloy casting inspection work can be carried out normally; the motor drives the transmission wheel to rotate through the belt, and the transmission wheel drives the rotating table to rotate synchronously through the transmission shaft, and the multiple placement frames on the rotating table drive the aluminum alloy casting to rotate to the visual inspection component; the support frame is provided with multiple CCD cameras, and the multiple CCD cameras can perform video inspection on the surface of the aluminum alloy casting, detect defects such as holes on the surface of the aluminum alloy casting, thereby screening out unqualified aluminum alloy castings to increase the quality of the aluminum alloy castings. The yield rate of finished parts; when the CCD camera detects aluminum alloy castings, the rotating cylinder can control the rotation of the support frame, so that the multiple CCD cameras on the support frame can rotate and move, and the cylinder 1 can drive the multiple CCD cameras to move vertically by driving the slide 1 to move, and the motor 2 drives the profile frame to move horizontally through the screw rod, so that the multiple CCD cameras can move horizontally; the rotating cylinder, cylinder 1 and motor 2 can cooperate to allow multiple CCD cameras to move in multiple directions, thereby increasing the detection range of multiple CCD cameras, ensuring that multiple CCD cameras can perform comprehensive detection of aluminum alloy castings to prevent missed detection;

[0022] B. In the present invention, after the visual inspection component has finished inspecting the aluminum alloy casting, the rotating component drives the aluminum alloy casting to move to the transmission component; first, the motor three drives the slide seat three to move horizontally along the trajectory of the two connecting seats three through the screw rod two, so that the negative pressure component moves as a whole to the top of the aluminum alloy casting; then the cylinder three drives the slide seat two to slide vertically, so that the slide seat two drives the negative pressure component to move downward as a whole and approach the aluminum alloy casting; when the suction nozzle is tightly attached to the top surface of the aluminum alloy casting, the negative pressure pump connected to the negative pressure pipe generates negative pressure suction, so that the suction nozzle adsorbs the aluminum alloy casting, and then the vertical moving component cooperates with the horizontal moving component to control the negative pressure component to move as a whole to the top of the airtight detection component, and the aluminum alloy casting adsorbed by the suction nozzle is placed on the sealing sleeve; the suction nozzle uses negative pressure to adsorb and transport the aluminum alloy casting, which will not cause scratches on the surface of the aluminum alloy casting, thereby ensuring the quality of the aluminum alloy casting;

[0023] C. In the present invention, after the negative pressure assembly moves the aluminum alloy casting onto the sealing sleeve, the cylinder 2 drives the inner cylinder to rise, and the inner cylinder drives the sealing cover to rise synchronously; during the rising process of the sealing cover, the multiple rotating parts can be driven to move through the multiple connecting parts 2, so that the multiple rotating parts rotate with the connection with the sealing sleeve as the center of the circle, so that the multiple rotating parts are in an outward expansion state, and at this time, the protrusions on the multiple rotating parts will abut against the inner wall of the aluminum alloy casting, thereby fixing the aluminum alloy casting and preventing the aluminum alloy casting from rotating or tilting; while the rotating parts rotate , cylinder three drives the connecting cylinder to descend, so that the pressure cylinder at the bottom of the connecting cylinder is pressed on the top of the aluminum alloy casting. When the pressure cylinder is against the top of the aluminum alloy casting, the lower end of the suction nozzle is squeezed and shrinks into the inner side of the pressure cylinder, thereby not affecting the normal pressing of the aluminum alloy casting by the pressure cylinder, and not causing damage to the suction nozzle; after the pressure cylinder presses the aluminum alloy casting, it can be stably fixed on the sealing sleeve with multiple protrusions, preventing the aluminum alloy casting from shaking or displacement to the greatest extent, ensuring that the air tightness detection of the aluminum alloy casting can be carried out normally;

[0024] D. In the present invention, an annular groove is provided on the sealing sleeve, and the bottom of the aluminum alloy casting is located in the annular groove of the sealing sleeve, which can ensure the sealing of the internal space of the aluminum alloy casting and ensure that the airtightness test can be carried out normally; after the aluminum alloy casting is fixed, the water pump sucks the water in the water tank into the water outlet pipe. At this time, the solenoid valve three and the solenoid valve one are in a closed state, and the water in the water outlet pipe will flow into the pressure measuring pipe and the drainage pipe through the connecting tee, and the water in the drainage pipe will flow into the internal space of the aluminum alloy casting through the space between the outer cylinder and the inner cylinder. At this time, the internal space of the aluminum alloy casting, the drainage pipe and the pressure measuring pipe are connected and sealed as a whole, and the pressure value of the water flow therein will be displayed in real time on the pressure gauge at one end of the pressure measuring pipe. When the value of the pressure gauge is constant When the pressure gauge is on, it means that the aluminum alloy casting has good sealing performance. When the value of the pressure gauge changes, it means that there is water leakage, which means that the sealing performance of the aluminum alloy casting is poor. The staff can know the result of the airtightness test of the aluminum alloy casting by visually observing the pressure gauge; after the airtightness test is completed, the solenoid valve 2 is closed, and the solenoid valve 3 and the solenoid valve 1 are opened at the same time. The water sucked into the outlet pipe by the water pump will flow back into the water tank through the return pipe 2, so that the water pump is always in working condition, and there is no need to frequently open and close the water pump, thereby extending the service life of the water pump; after the solenoid valve 3 is opened, the water flow in the internal space of the aluminum alloy casting will flow into the water tank through the return pipe 1, which can not only realize the reuse of water, but also prevent the overflow of water from affecting the normal operation of other components;

[0025] E. In the present invention, after the water flow in the internal space of the aluminum alloy casting is completely discharged, the cylinder 2 controls the multiple rotating parts to reset, so that the multiple protrusions no longer restrict the movement of the aluminum alloy casting, and then the cylinder 3 drives the pressure cylinder to move upward through the connecting cylinder, so that the pressure cylinder no longer presses the aluminum alloy casting. At this time, under the action of the spring force, the lower end of the suction nozzle is reset to the bottom of the pressure cylinder and fits tightly with the aluminum alloy casting, and then the negative pressure pump generates negative pressure to allow the suction nozzle to absorb the aluminum alloy casting. Finally, the vertical moving component cooperates with the horizontal moving component to move the aluminum alloy casting to the conveying device, and the conveying device moves the aluminum alloy casting that has been air-tightly tested to the next processing equipment; the air-tightness test of the aluminum alloy casting is controlled by the controller throughout the whole process, and no manual operation is required by the staff. While ensuring the normal progress of the air-tightness test, the workload of the staff is reduced, and the efficiency of the air-tightness test is also accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 The main view;

[0028] Figure 3 For the present invention Figure 1 Another perspective of the picture;

[0029] Figure 4 For the present invention Figure 1 Bottom view

[0030] Figure 5 For the present invention Figure 3 Another perspective of the picture;

[0031] Figure 6 For the present invention Figure 1 Schematic diagram of some structures;

[0032] Figure 7 For the present invention Figure 6 Another perspective of the picture;

[0033] Figure 8 It is a three-dimensional structural schematic diagram of the transmission assembly in the present invention;

[0034] Fig. 9 For the present invention Figure 8 Another perspective of the picture;

[0035] Fig.10 For the present invention Figure 7 Schematic diagram of some structures;

[0036] Fig.11 For the present invention Fig.10 The main view;

[0037] Fig.12 For the present invention Fig.11 AA section view;

[0038] Fig.13 For the present invention Fig.10 Schematic diagram of some structures;

[0039] Fig.14 For the present invention Figure 2 A partial enlarged view of

[0040] Fig.15 For the present invention Figure 6 A partial enlarged view of

[0041] Fig.16 For the present invention Figure 7 A partial enlarged view of

[0042] Fig.17 For the present invention Fig.13 A partial enlarged view of .

[0043] In the figure: 1-rotating assembly, 2-visual detection assembly, 3-transmission assembly, 4-conveying device, 5-water tank, 6-water pump, 7-pipeline assembly, 8-frame, 9-controller, 10-airtight detection assembly;

[0044] 11-rotating table, 12-placing frame, 13-connecting plate, 14-supporting plate, 15-bearing seat, 16-driving wheel, 17-belt, 18-motor 1, 21-supporting frame, 22-rotating cylinder, 23-sliding seat 1, 24-cylinder 1, 25-connecting seat 1, 26-profile frame, 27-guide rail seat, 28-base, 29-motor 2, 20-screw rod 1, 210-connecting piece 1, 31-negative pressure component, 32-vertical moving component , 33-lateral movement assembly, 71-water outlet pipe, 72-connecting tee, 73-pressure measuring pipe, 74-pressure gauge, 75-drainage pipe, 76-return pipe one, 77-solenoid valve one, 78-solenoid valve two, 79-solenoid valve three, 70-return pipe two, 101-cylinder two, 102-inner cylinder, 103-outer cylinder, 104-cover, 105-rotating part, 106-bump, 107-connecting part two, 108-sealing sleeve;

[0045] 311-adsorption nozzle, 312-pressing cylinder, 313-connecting cylinder, 314-movable plate, 315-spring, 316-negative pressure tube, 321-sliding seat 2, 322-connecting seat 2, 323-rib plate, 324-sliding seat 3, 325-cylinder 3, 331-connecting seat 3, 332-vertical frame, 333-screw rod 2, 334-vertical plate, 335-motor 3. DETAILED DESCRIPTION

[0046] See also Figure 1-17 , an aluminum alloy casting air tightness detection device, comprising a rotating assembly 1 for transporting aluminum alloy castings, a visual detection assembly 2 is provided on one side of the rotating assembly 1, and a transmission assembly 3 is provided on the side of the rotating assembly 1 away from the visual detection assembly 2; an air tightness detection assembly 10 is provided below the transmission assembly 3, and a conveying device 4 is provided on the side of the transmission assembly 3 away from the rotating assembly 1; a water tank 5 is provided below the rotating assembly 1, a water pump 6 is provided on one side of the water tank 5, and the water pump 6 is fixedly connected to a pipeline assembly 7, and the pipeline assembly 7 is fixedly connected to the air tightness detection assembly 10;

[0047] The airtight detection component 10 comprises an outer cylinder 103, an inner cylinder 102 is arranged on the inner side of the outer cylinder 103, and a space for water flow is provided between the inner cylinder 102 and the outer cylinder 103; a sealing sleeve 108 is fixedly connected to the top of the outer cylinder 103, and a circular hole for water flow is arranged in the middle of the top of the sealing sleeve 108; a plurality of rotating members 105 are evenly rotatably connected to the top of the sealing sleeve 108, and a protrusion 106 is arranged at one end of the plurality of rotating members 105 away from the sealing sleeve 108; a slide groove is arranged at the lower end of the plurality of rotating members 105, and a connecting member 107 is slidably connected in the plurality of slide grooves; a sealing cover 104 is fixedly connected to the top of the inner cylinder 102, and a plurality of connecting members 107 are rotatably connected to the sealing cover 104 at one end away from the rotating member 105; the bottom of the inner cylinder 102 is fixedly connected to the cylinder 101;

[0048] The transmission assembly 3 includes a negative pressure assembly 31, which includes a suction nozzle 311, which is located above the sealing sleeve 108; a pressure cylinder 312 is provided on the outside of the suction nozzle 311, and the lower end of the suction nozzle 311 is located below the pressure cylinder 312, and the top of the pressure cylinder 312 is fixedly connected to the bottom of the connecting cylinder 313; a spring 315 is provided inside the connecting cylinder 313, the bottom of the spring 315 is fixedly connected to the top of the pressure cylinder 312, and the top is fixedly connected to a movable plate 314; a connecting pipe is provided on the inside of the spring 315, the bottom of the connecting pipe is fixedly connected to the top of the suction nozzle 311, and the top is fixedly connected to the negative pressure pipe 316, and a circular hole for the negative pressure pipe 316 to pass through is provided in the middle of the movable plate 314;

[0049] By adopting the above technical scheme, the aluminum alloy casting is first placed in the placement frame 12, and the placement frame 12 can limit the aluminum alloy casting to prevent the aluminum alloy casting from shaking or displacement, so as to ensure that the subsequent aluminum alloy casting inspection work can be carried out normally; the motor 18 drives the transmission wheel 16 to rotate through the belt 17, and the transmission wheel 16 synchronously drives the rotating table 11 to rotate through the transmission shaft, and the multiple placement frames 12 on the rotating table 11 drive the aluminum alloy casting to rotate to the visual inspection component 2; a plurality of CCD cameras are provided on the support frame 21, and the plurality of CCD cameras can perform video inspection on the surface of the aluminum alloy casting, detect defects such as holes on the surface of the aluminum alloy casting, thereby screening out unqualified aluminum alloy castings to increase aluminum The yield rate of finished alloy castings; when the CCD camera is detecting aluminum alloy castings, the rotating cylinder 22 can control the rotation of the support frame 21, so that the multiple CCD cameras on the support frame 21 can rotate and move, and the cylinder 24 can drive the multiple CCD cameras to move vertically by driving the slide 23 to move, and the motor 29 drives the profile frame 26 to move horizontally through the screw rod, so that the multiple CCD cameras can move horizontally; the rotating cylinder 22, the cylinder 24 and the motor 29 can cooperate to allow the multiple CCD cameras to move in multiple directions, thereby increasing the detection range of the multiple CCD cameras, ensuring that the multiple CCD cameras can perform comprehensive detection of aluminum alloy castings to prevent missed detection.

[0050] Please refer to 1-17. In this embodiment, the rotating assembly 1 includes a rotating table 11, and a plurality of placement frames 12 for placing aluminum alloy castings are evenly arranged on the top of the rotating table 11; a connecting plate 13 is fixedly connected to the bottom of the rotating table 11, and the connecting plate 13 is rotatably connected to the top of the frame body 8, and a transmission wheel 16 is provided below the connecting plate 13; the middle of the transmission wheel 16 is fixedly connected to the lower end of the transmission shaft, and the top of the transmission shaft is fixedly connected to the connecting plate 13; a motor 18 is provided on one side of the transmission wheel 16, and the transmission wheel 16 is transmission-connected to the output end of the motor 18 through a belt 17; the lower end of the transmission shaft is rotatably connected to the bearing seat 15, and the bearing seat 15 is fixedly connected to the bottom of the support plate 14, and the support plate 14 is fixedly connected to the frame body 8;

[0051] The pipeline assembly 7 includes an outlet pipe 71, which is fixedly connected to the outlet end of the water pump 6, and the water inlet end of the water pump 6 is fixedly connected to the water tank 5; the end of the outlet pipe 71 close to the water pump 6 is fixedly connected to the return pipe 2 70, and the end of the return pipe 2 70 away from the outlet pipe 71 is fixedly connected to the water tank 5; the end of the outlet pipe 71 away from the water pump 6 is fixedly connected to the connecting tee 72, and the other two ports of the connecting tee 72 are fixedly connected to the pressure measuring pipe 73 and the drainage pipe 75 respectively;

[0052] By adopting the above technical solution, after the visual inspection component 2 completes the inspection of the aluminum alloy casting, the rotating component 1 drives the aluminum alloy casting to move to the transmission component 3; first, the motor 335 drives the slide 324 to move horizontally along the trajectory of the two connecting seats 331 through the screw 2 333, so that the negative pressure component 31 moves as a whole to the top of the aluminum alloy casting; then the cylinder 325 drives the slide 2 321 to slide vertically, so that the slide 2 321 drives the negative pressure component 31 to move downward as a whole and close to the aluminum alloy casting; when the suction nozzle 311 is tightened After fitting tightly to the top surface of the aluminum alloy casting, the negative pressure pump connected to the negative pressure tube 316 generates negative pressure suction, allowing the suction nozzle 311 to adsorb the aluminum alloy casting, and then the vertical moving component 32 cooperates with the horizontal moving component 33 to control the negative pressure component 31 to move as a whole to the top of the airtight detection component 10, and place the aluminum alloy casting adsorbed by the suction nozzle 311 on the sealing sleeve 108; the suction nozzle 311 uses negative pressure to adsorb and transport the aluminum alloy casting, which will not cause scratches on the surface of the aluminum alloy casting, thereby ensuring the quality of the aluminum alloy casting.

[0053] See also Figure 1-17In this embodiment, the pressure measuring pipe 73 is fixedly connected to the frame body 8 through a fixing seat, and a pressure gauge 74 is provided at one end of the pressure measuring pipe 73 away from the connecting tee 72; one end of the drainage pipe 75 away from the connecting tee 72 is fixedly connected to the lower end of the outer cylinder 103; a return pipe 1 76 is provided on one side of the drainage pipe 75, one end of the return pipe 1 76 is fixedly connected to the sealing sleeve 108, and the sealing sleeve 108 is provided with a circular hole for the return pipe 1 76 to pass through; one end of the return pipe 1 76 away from the sealing sleeve 108 is fixedly connected to the water tank 5; the outlet pipe 71 is installed with a solenoid valve 2 78, the return pipe 1 76 is installed with a solenoid valve 3 79, and the return pipe 2 70 is installed with a solenoid valve 1 77;

[0054] The negative pressure assembly 31 is slidably connected to the vertical moving assembly 32, and the vertical moving assembly 32 is slidably connected to the horizontal moving assembly 33; the vertical moving assembly 32 includes a second slide 321, and the second slide 321 is fixedly connected to the top of the connecting tube 313; the side of the second slide 321 away from the connecting tube 313 is slidably connected to the second connecting seat 322, and the side of the second connecting seat 322 away from the second slide 321 is fixedly connected with a rib 323; the bottom of the rib 323 is fixedly connected to the middle of the top of the third slide 324; the top of the second connecting seat 322 is fixedly connected to the third cylinder 325, the telescopic rod of the third cylinder 325 is fixedly connected to the second slide 321, and the top of the second connecting seat 322 is provided with a circular hole for the telescopic rod of the third cylinder 325 to pass through;

[0055] By adopting the above technical solution, after the negative pressure component 31 moves the aluminum alloy casting onto the sealing sleeve 108, the cylinder 101 drives the inner cylinder 102 to rise, and the inner cylinder 102 drives the cover 104 to rise synchronously; during the rising process of the cover 104, the multiple rotating parts 105 can be driven to move through the multiple connecting parts 107, so that the multiple rotating parts 105 rotate with the connection with the sealing sleeve 108 as the center of the circle, so that the multiple rotating parts 105 are in an outward expansion state, and at this time, the protrusions 106 on the multiple rotating parts 105 will be against the inner wall of the aluminum alloy casting, thereby fixing the aluminum alloy casting and preventing the aluminum alloy casting from rotating or tilting; While rotating, the cylinder 325 drives the connecting cylinder 313 to descend, so that the pressing cylinder 312 at the bottom of the connecting cylinder 313 is pressed on the top of the aluminum alloy casting. When the pressing cylinder 312 is against the top of the aluminum alloy casting, the lower end of the suction nozzle 311 is squeezed and shrinks into the inner side of the pressing cylinder 312, so as not to affect the normal pressing of the aluminum alloy casting by the pressing cylinder 312, and at the same time, it will not cause damage to the suction nozzle 311; after the pressing cylinder 312 presses the aluminum alloy casting, it can be stably fixed on the sealing sleeve 108 with the cooperation of the plurality of protrusions 106, so as to prevent the aluminum alloy casting from shaking or displacement to the greatest extent, and ensure that the air tightness detection of the aluminum alloy casting can be carried out normally.

[0056] See also Figure 1-17 In this embodiment, the lateral moving assembly 33 includes two connecting seats 331, and the two connecting seats 331 are respectively slidably connected to the two ends of the sliding seat 324; the two ends of the bottom of the two connecting seats 331 are fixedly connected to the vertical frames 332, and the bottoms of the multiple vertical frames 332 are fixedly connected to the top of the frame body 8; the two ends of the top of one of the two connecting seats 331 are fixedly connected to the vertical plates 334, and the two vertical plates 334 are rotatably connected to the screw rod 2 333; one end of the screw rod 2 333 is fixedly connected to the motor 335, and the motor 335 is fixedly connected to the vertical plate 334;

[0057] The visual inspection component 2 includes a support frame 21, and a plurality of CCD cameras are installed on the inner side of the support frame 21; the top middle of the support frame 21 is fixedly connected to the output shaft of the rotating cylinder 22, and the rotating cylinder 22 is fixedly connected to the slide seat 23; the side of the slide seat 23 away from the rotating cylinder 22 is slidably connected to the connecting seat 25, and the top of the connecting seat 25 is fixedly connected to the cylinder 24; the telescopic rod of the cylinder 24 is fixedly connected to the top of the slide seat 23, and the top of the connecting seat 25 is provided with a circular hole for the telescopic rod of the cylinder 24 to pass through; the bottom of the connecting seat 25 is fixedly connected to the top middle of the profile frame 26;

[0058] By adopting the above technical scheme, an annular groove is provided on the sealing sleeve 108, and the bottom of the aluminum alloy casting is located in the annular groove of the sealing sleeve 108, which can ensure the sealing of the internal space of the aluminum alloy casting and ensure that the airtightness detection can be carried out normally; after the aluminum alloy casting is fixed, the water pump 6 sucks the water in the water tank 5 into the water outlet pipe 71. At this time, the solenoid valve three 79 and the solenoid valve one 77 are in a closed state, and the water in the water outlet pipe 71 will flow into the pressure measuring pipe 73 and the drainage pipe 75 through the connecting tee 72. The water in the drainage pipe 75 will flow into the internal space of the aluminum alloy casting through the space between the outer cylinder 103 and the inner cylinder 102. At this time, the internal space of the aluminum alloy casting, the drainage pipe 75 and the pressure measuring pipe 73 are connected and sealed as a whole, and the pressure value of the water flow therein will be displayed in real time on the pressure gauge 74 at one end of the pressure measuring pipe 73. When the value of the pressure gauge 74 is constant, it means that the aluminum alloy casting has good sealing performance. When the value of the pressure gauge 74 changes, it indicates that there is water leakage, which means that the sealing performance of the aluminum alloy casting is poor. The staff can know the result of the airtightness test of the aluminum alloy casting by visually observing the pressure gauge 74; after the airtightness test is completed, the solenoid valve 2 78 is closed, and the solenoid valve 3 79 and the solenoid valve 1 77 are opened at the same time, and the water sucked into the outlet pipe 71 by the water pump 6 will flow back into the water tank 5 through the return pipe 2 70, so that the water pump 6 is always in working state, and there is no need to frequently open and close the water pump 6, thereby extending the service life of the water pump 6; after the solenoid valve 3 79 is opened, the water flow in the internal space of the aluminum alloy casting will flow into the water tank 5 through the return pipe 1 76, which can not only realize the reuse of water, but also prevent the overflow of water from affecting the normal operation of other components.

[0059] See also Figure 1-17 In this embodiment, the bottoms of both ends of the profile frame 26 are slidably connected to the two guide rail seats 27, and the two guide rail seats 27 are fixedly connected to the top of the frame body 8; a base 28 is provided between the two guide rail seats 27, and a connecting piece 210 is slidably connected to the base 28, and the connecting piece 210 is fixedly connected to the profile frame 26, and the base 28 is fixedly connected to the top of the frame body 8; a screw rod 20 is connected to the middle thread of the connecting piece 210, and both ends of the screw rod 20 are rotatably connected to the base 28; a motor 29 is fixedly connected to one end of the base 28 away from the rotating component 1, and the output shaft of the motor 29 is fixedly connected to one end of the screw rod 20;

[0060] The water tank 5 is located inside the frame body 8, and the water pump 6 is fixedly connected to the frame body 8; a controller 9 is provided on one side of the frame body 8;

[0061] By adopting the above technical scheme, after the water flow in the internal space of the aluminum alloy casting is completely discharged, the cylinder 2 101 controls the multiple rotating parts 105 to reset, so that the multiple protrusions 106 no longer restrict the movement of the aluminum alloy casting, and then the cylinder 3 325 drives the pressure cylinder 312 to move upward through the connecting cylinder 313, so that the pressure cylinder 312 no longer presses the aluminum alloy casting. At this time, under the action of the elastic force of the spring 315, the lower end of the suction nozzle 311 is reset to the bottom of the pressure cylinder 312 and fits tightly with the aluminum alloy casting, and then the negative pressure pump generates negative pressure, so that the suction nozzle 311 adsorbs the aluminum alloy casting, and finally the vertical moving component 32 cooperates with the horizontal moving component 33 to move the aluminum alloy casting to the conveying device 4, and the conveying device 4 moves the aluminum alloy casting that has been airtightly tested to the next processing equipment; the airtightness test of the aluminum alloy casting is controlled by the controller 9 throughout the whole process, and no manual operation is required by the staff. While ensuring the normal progress of the airtightness test, the workload of the staff is reduced, and the efficiency of the airtightness test is also accelerated.

[0062] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An aluminum alloy casting air tightness detection device, characterized in that: The invention comprises a rotating assembly (1) for transporting aluminum alloy castings, wherein a visual detection assembly (2) is provided on one side of the rotating assembly (1), and a transmission assembly (3) is provided on the side of the rotating assembly (1) away from the visual detection assembly (2); an airtight detection assembly (10) is provided below the transmission assembly (3), and a conveying device (4) is provided on the side of the transmission assembly (3) away from the rotating assembly (1); a water tank (5) is provided below the rotating assembly (1), and a water pump (6) is provided on one side of the water tank (5), and the water pump (6) is fixedly connected to a pipeline assembly (7), and the pipeline assembly (7) is fixedly connected to the airtight detection assembly (10); The airtight detection assembly (10) comprises an outer cylinder (103), an inner cylinder (102) is arranged inside the outer cylinder (103), and a space for water flow is provided between the inner cylinder (102) and the outer cylinder (103); a sealing sleeve (108) is fixedly connected to the top of the outer cylinder (103), and a circular hole is arranged in the middle of the top of the sealing sleeve (108) for water flow to pass through; a plurality of rotating parts (105) are uniformly rotatably connected to the top of the sealing sleeve (108), and the plurality of rotating parts (105) are provided with a protrusion (106) at one end away from the sealing sleeve (108); the lower ends of the plurality of rotating members (105) are provided with a slide groove and the plurality of slide grooves are slidably connected with a second connecting member (107); the top of the inner cylinder (102) is fixedly connected with a sealing cover (104), and the ends of the plurality of second connecting members (107) away from the rotating member (105) are rotatably connected with the sealing cover (104); the bottom of the inner cylinder (102) is fixedly connected with the second cylinder (101); The transmission assembly (3) comprises a negative pressure assembly (31), and the negative pressure assembly (31) comprises a suction nozzle (311), and the suction nozzle (311) is located above the sealing sleeve (108); A pressure cylinder (312) is provided on the outer side of the suction nozzle (311), and the lower end of the suction nozzle (311) is located below the pressure cylinder (312), and the top of the pressure cylinder (312) is fixedly connected to the bottom of the connecting cylinder (313); a spring (315) is provided inside the connecting cylinder (313), and the bottom of the spring (315) is fixedly connected to the top of the pressure cylinder (312), and the top is fixedly connected to a movable plate (314); a connecting tube is provided on the inner side of the spring (315), and the bottom of the connecting tube is fixedly connected to the top of the suction nozzle (311), and the top is fixedly connected to a negative pressure tube (316), and a circular hole for the negative pressure tube (316) to pass through is provided in the middle of the movable plate (314).

2. The air tightness detection device for aluminum alloy castings according to claim 1, characterized in that: The rotating assembly (1) comprises a rotating table (11), the top of which is evenly provided with a plurality of placement frames (12) for placing aluminum alloy castings; a connecting plate (13) is fixedly connected to the bottom of the rotating table (11), the connecting plate (13) is rotatably connected to the top of the frame body (8), and a transmission wheel (16) is provided below the connecting plate (13); the middle of the transmission wheel (16) is fixedly connected to the lower end of the transmission shaft, and the top of the transmission shaft is fixedly connected to the connecting plate (13); a motor (18) is provided on one side of the transmission wheel (16), and the transmission wheel (16) is transmission-connected to the output end of the motor (18) through a belt (17); the lower end of the transmission shaft is rotatably connected to a bearing seat (15), the bearing seat (15) is fixedly connected to the bottom of a support plate (14), and the support plate (14) is fixedly connected to the frame body (8).

3. The air tightness detection device for aluminum alloy castings according to claim 2, characterized in that: The pipeline assembly (7) comprises a water outlet pipe (71), the water outlet pipe (71) is fixedly connected to the water outlet end of the water pump (6), and the water inlet end of the water pump (6) is fixedly connected to the water tank (5); the end of the water outlet pipe (71) close to the water pump (6) is fixedly connected to the return pipe 2 (70), and the end of the return pipe 2 (70) away from the water outlet pipe (71) is fixedly connected to the water tank (5); the end of the water outlet pipe (71) away from the water pump (6) is fixedly connected to a connecting tee (72), and the other two ports of the connecting tee (72) are respectively fixedly connected to the pressure measuring pipe (73) and the drainage pipe (75).

4. The air tightness detection device for aluminum alloy castings according to claim 3, characterized in that: The pressure measuring pipe (73) is fixedly connected to the frame body (8) through a fixing seat, and a pressure gauge (74) is provided at one end of the pressure measuring pipe (73) away from the connecting tee (72); one end of the drainage pipe (75) away from the connecting tee (72) is fixedly connected to the lower end of the outer cylinder (103); a return pipe (76) is provided on one side of the drainage pipe (75), one end of the return pipe (76) is fixedly connected to a sealing sleeve (108), and a circular hole is provided on the sealing sleeve (108) for the return pipe (76) to pass through; one end of the return pipe (76) away from the sealing sleeve (108) is fixedly connected to the water tank (5); the water outlet pipe (71) is installed with a solenoid valve (78), the return pipe (76) is installed with a solenoid valve (79), and the return pipe (70) is installed with a solenoid valve (77).

5. The air tightness detection device for aluminum alloy castings according to claim 4, characterized in that: The negative pressure component (31) is slidably connected to the vertical moving component (32), and the vertical moving component (32) is slidably connected to the horizontal moving component (33); the vertical moving component (32) includes a second slide seat (321), and the second slide seat (321) is fixedly connected to the top of the connecting tube (313); the side of the second slide seat (321) away from the connecting tube (313) is slidably connected to the second connecting seat (322), and the side of the second connecting seat (322) away from the second slide seat (321) is fixedly connected with a rib plate (323); the bottom of the rib plate (323) is fixedly connected to the middle of the top of the third slide seat (324); the top of the second connecting seat (322) is fixedly connected with a third cylinder (325), and the telescopic rod of the third cylinder (325) is fixedly connected to the second slide seat (321), and the top of the second connecting seat (322) is provided with a circular hole for the telescopic rod of the third cylinder (325) to pass through.

6. The air tightness detection device for aluminum alloy castings according to claim 5, characterized in that: The lateral moving assembly (33) comprises two connecting seats three (331), and the two connecting seats three (331) are respectively slidably connected to the two ends of the sliding seat three (324); the two ends of the bottom of the two connecting seats three (331) are fixedly connected to the vertical frames (332), and the bottoms of the multiple vertical frames (332) are fixedly connected to the top of the frame body (8); the two ends of the top of one of the two connecting seats three (331) are fixedly connected to the vertical plates (334), and the two vertical plates (334) are rotationally connected to the screw rod two (333); one end of the screw rod two (333) is fixedly connected to the motor three (335), and the motor three (335) is fixedly connected to the vertical plate (334).

7. The air tightness detection device for aluminum alloy castings according to claim 6, characterized in that: The visual inspection component (2) comprises a support frame (21), and a plurality of CCD cameras are installed on the inner side of the support frame (21); the middle of the top of the support frame (21) is fixedly connected to the output shaft of the rotating cylinder (22), and the rotating cylinder (22) is fixedly connected to a slide seat (23); the side of the slide seat (23) away from the rotating cylinder (22) is slidably connected to a connecting seat (25), and the top of the connecting seat (25) is fixedly connected to a cylinder (24); the telescopic rod of the cylinder (24) is fixedly connected to the top of the slide seat (23), and a circular hole is provided on the top of the connecting seat (25) for the telescopic rod of the cylinder (24) to pass through; the bottom of the connecting seat (25) is fixedly connected to the middle of the top of the profile frame (26).

8. The air tightness detection device for aluminum alloy castings according to claim 7, characterized in that: The bottoms of both ends of the profile frame (26) are respectively slidably connected to two guide rail seats (27), and the two guide rail seats (27) are fixedly connected to the top of the frame body (8); a base (28) is provided between the two guide rail seats (27), and a connecting piece (210) is slidably connected to the base (28), and the connecting piece (210) is fixedly connected to the profile frame (26), and the base (28) is fixedly connected to the top of the frame body (8); a screw rod (20) is connected to the middle thread of the connecting piece (210), and both ends of the screw rod (20) are rotatably connected to the base (28); one end of the base (28) away from the rotating component (1) is fixedly connected to a motor (29), and the output shaft of the motor (29) is fixedly connected to one end of the screw rod (20).

9. The air tightness detection device for aluminum alloy castings according to claim 8, characterized in that: The water tank (5) is located inside the frame body (8), and the water pump (6) is fixedly connected to the frame body (8); a controller (9) is provided on one side of the frame body (8).

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