A front-end frame injection molding inspection fixture

Abstract

The present invention relates to the field of injection molded parts inspection tools, specifically a front-end frame injection molded parts inspection tool, comprising a fixed platform, a plurality of real vehicle clips and a plurality of detection blocks are provided above the fixed platform, the detection blocks are fixedly mounted on the fixed platform, the real vehicle clips comprise a mounting seat 1, a fixed block 1 and a movable block 1, the mounting seat 1 is fixedly mounted above the fixed platform, a fixed block 1 is provided on the mounting seat 1, a rotating shaft 1 is rotatably mounted on the fixed block 1, and a movable block 1 is rotatably mounted on the rotating shaft 1. The present invention clamps the inspection part by hydraulically driving the real vehicle clips, thereby solving the problem of the inconvenience of manually operating multiple real vehicle clips to clamp the inspection part and the problem of the uneven force generated by the real vehicle clips on the inspection part affecting the inspection accuracy of the inspection part. In addition, by setting a detection device to simultaneously detect multiple face differences of the inspection part, the trouble of the inspector in detecting multiple face differences is reduced, thereby improving the inspection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of injection molded parts inspection tools, in particular to a front-end frame injection molded parts inspection tool. Background Art

[0002] At present, injection molded parts are used in many fields, such as electronic products, medical facilities, vehicle manufacturing, etc. Injection molded parts involve the installation of appearance. The surface difference of injection molded parts will not only affect the aesthetics of the equipment appearance, but also affect the sealing of the equipment appearance. Therefore, most injection molded parts that involve appearance installation or have requirements for sealing need to be tested for the surface difference of the injection molded surface.

[0003] The existing surface difference detection of injection molded parts requires that the injection molded parts be fixed on the inspection fixture before being inspected. During use, the operator needs to close multiple real car buckles one by one to clamp the inspection part, and then measure the multiple surface differences of the inspection part with a feeler gauge. In this process, multiple real car buckles are manually closed, which is not only complicated to operate and has low work efficiency, but also the real car buckles clamping the inspection part one by one will cause the position of the inspection part to shift, and the inspection part is fully fixed after the shift and cannot be adjusted. The real car buckles will cause the inspection part to deform during fixation, which will lead to reduced inspection accuracy. In addition, when manually inspecting the surface difference of the inspection part, when inspecting injection molded parts with complex surfaces, the inspector needs to inspect more surfaces, which leads to low inspection efficiency. When injection molded parts need to be inspected in batches, the inspection speed cannot keep up with the production speed of the equipment, resulting in product accumulation, occupying the inspector's activity space, and affecting the inspector's operation.

[0004] Therefore, in order to solve the problems of low detection accuracy and low detection efficiency during the use of the inspection fixture, a front-end frame injection molding inspection fixture is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a front-end frame injection molding inspection fixture, which clamps the inspection part by setting a hydraulically driven real vehicle clip, and by connecting a pressure valve at the drive device, realizes that multiple real vehicle clips automatically clamp the inspection part at the same time, and sets a detection device to simultaneously detect multiple surface differences of the inspection part, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A front-end frame injection molding inspection fixture comprises a fixed platform, a plurality of real vehicle buckles and a plurality of detection blocks are provided above the fixed platform, the detection blocks are bolted to the fixed platform, the real vehicle buckle comprises a mounting seat, a fixed block and a movable block, the mounting seat is bolted above the fixed platform, a fixed block is provided on the mounting seat, the fixed block is integrally connected to the mounting seat, a rotating shaft is rotatably installed on the fixed block, a movable block is rotatably installed on the rotating shaft, a driving device for simultaneously driving the plurality of movable blocks is provided on the rotating shaft, and a detection device for automatically detecting the width of the gap between the surface of the detection piece and the detection block is provided on the fixed platform.

[0008] Preferably, the driving device 1 includes a shell fixedly mounted on the mounting base 1, the shell is connected to the mounting base 1 by bolts, a slide is provided inside the shell, a slide rod is slidably installed inside the slide, a rack is provided on the slide rod, a gear that meshes with the rack is rotatably installed above the shell, the rotating shaft 1 penetrates the gear and is fixedly connected to the gear, the rotating shaft 1 and the shell are sealed and rotatably connected, the shell is provided with an oil port 1 and an oil port 2 respectively connected to the two ends of the slide, the oil port 1 and the oil port 2 are connected to a reversing valve, the reversing valve is connected to an oil supply device 1, and the oil supply device 1 adopts an oil pump to supply oil.

[0009] When in use, hydraulic oil is introduced into the oil port 1, and the hydraulic oil pushes the slide rod, causing the rack on the slide rod to drive the gear to rotate, and then drives the movable block to rotate through the rotating shaft, causing all the movable blocks to rotate at the same time, clamping the detection part with the fixed block, and realizing simultaneous clamping of the detection part by multiple real vehicle buckles, avoiding the detection part position being offset due to the real vehicle buckles clamping the detection part one by one, and the detection part is fully fixed after the offset and cannot be adjusted. By adopting hydraulic drive, multiple real vehicle buckles can be clamped on multiple fixed surfaces of the detection part, which reduces the difficulty of the operator in clamping the detection part and avoids the problem of inaccurate detection caused by the deformation of the detection part due to uneven fixing force.

[0010] The driving device 1 adopts a hydraulic drive mode. In the present invention, the driving device 1 can also adopt a pneumatic drive mode. Compared with the hydraulic drive, since the inspection tool needs to be equipped with an air gun to deal with the dust on the inspection tool, the pneumatic drive can directly share the same air pressure system with the air gun, while the hydraulic drive requires an additional oil supply system, which increases the manufacturing cost of the inspection tool; when the pneumatic drive mode is used, it will be directly connected to the air pressure system when starting and closing, and there will be a certain pressure in the air pressure system. When in use, the internal pressure of the driving device 1 increases from zero to a certain level, which will generate increased vibration and affect the service life of the actual vehicle buckle. When the hydraulic drive is used, the pressure of the hydraulic drive will be sufficiently increased, and the vibration of the actual vehicle buckle will be smaller, thereby improving the service life of the actual vehicle buckle.

[0011] Preferably, the oil port 1 and the oil port 2 are both connected to a pressure valve.

[0012] In the present invention, a hydraulic drive is adopted to drive the movable block one, but since the lengths of the pipes connecting the oil supply device to the multiple shells are different, the movement of the multiple slide rods will be asynchronous, thereby affecting the synchronous clamping of the actual vehicle buckle. A pressure valve is set at the oil port one and the oil port two. When the pressure value in the hydraulic circuit reaches the pressure of the pressure valve, the hydraulic oil can enter the oil port one and the oil port two, thereby improving the synchronization rate of the rotation of the multiple movable blocks one.

[0013] Preferably, the detection device includes a mounting base 2 fixedly mounted on a fixed platform, the mounting base 2 includes a fixed block 2, a slider 1 is slidably mounted on the fixed block 2, a slider 2 is slidably mounted on the slider 1, the slider 1 is connected to an oil cylinder 1, the oil cylinder 1 is fixedly connected to the fixed block 2, the slider 2 is slidably connected to a feeler gauge, the feeler gauge is elastically connected to the slider 2 by a spring 1, the lower end of the feeler gauge is a through gauge, and the upper end of the feeler gauge is a stop gauge, two oil cylinders 2 are symmetrically mounted on the slider 1 on both sides of the slider 2 by screws, the two output ends of the oil cylinders 2 are clamped with the slider 2, and the oil cylinder 1 and the oil cylinder 2 are both connected to an oil supply device 2, and when the oil cylinder 2 and the oil cylinder 1 are extended, the oil cylinder 2 has a higher priority than the oil cylinder 1, and when the oil cylinder 1 and the cylinder 2 are retracted, the oil cylinder 1 has a higher priority than the oil cylinder 2.

[0014] After the test piece is clamped, the second oil supply device is started to supply oil to the first oil cylinder, pushing the first slide to move horizontally, so that the feeler gauge moves to above the gap between the surface of the test piece and the test block, and then the second oil cylinder extends to drive the feeler gauge to move downward to detect the width of the gap, so that the feeler gauge enters the gap between the surface of the test piece and the test block to detect the width of the gap, thereby realizing the gap between multiple test piece surfaces and the test block, improving the detection efficiency;

[0015] The feeler gauge is driven to move horizontally by the oil cylinder, so as to avoid the feeler gauge being located above the gap between the surface of the detection piece and the detection block and affecting the installation of the detection piece.

[0016] Furthermore, the feeler gauge is tilted 3°-5° toward one side of the detection piece; during use, cylinder one, cylinder two, slider one and slider two will all produce different degrees of wear, resulting in the gap between the feeler gauge and the detection piece surface and the detection block being unable to be aligned. For this reason, the feeler gauge is tilted 3°-5° toward one side of the detection piece, and the push of cylinder two causes the feeler gauge to first contact the detection surface of the detection piece, causing the feeler gauge to bend, so that one side of the feeler gauge is always flush with the detection piece surface, causing the feeler gauge to always move downward in close contact with the detection piece surface, thereby avoiding detection errors caused by feeler gauge position offset due to wear of components, so that the feeler gauge detection is not affected by the installation accuracy and use accuracy of cylinder one, cylinder two, slider one and slider two.

[0017] The feeler gauge is always in contact with the test piece, but the hardness of the test piece is much smaller than that of the feeler gauge, so the surface wear of the feeler gauge and the test piece can be ignored.

[0018] Preferably, the feeler gauge is slidably mounted on the second slider, a detection plate is slidably mounted on the second slider, a detection sensor 1 is glued to the detection plate, a detection sensor 2 is glued to the second slider, a signal light 1 and a signal light 2 are provided on the second fixing block, the detection sensor 1 is electrically connected to the first signal light, the detection sensor 2 is electrically connected to the second signal light, and the light sources of the two signal lights are different;

[0019] When in use, the second cylinder extends, pushing the feeler gauge downward. When the feeler gauge cannot enter the gap between the detection piece and the detection block, the feeler gauge is pushed to retract, first contacting the detection plate and pressing the detection sensor 1. At this time, the signal light 1 lights up. At this time, the second cylinder continues to move, pushing the feeler gauge to continue to retract, causing the detection plate to press onto the detection sensor 2. At this time, the signal light 2 lights up, and the second cylinder stops moving. When the feeler gauge can enter the gap between the detection piece and the detection block and the stop gauge cannot pass through, the retraction stroke of the feeler gauge is reduced, and the feeler gauge will only contact the detection plate, and then only When the feeler gauge and the stop gauge can both enter the gap between the inspection piece and the inspection block, the feeler gauge will not shrink, and both the signal light 1 and the signal light 2 will not light up. After the oil cylinder 2 is fully pressed down, people can observe the color of the signal and other signals to judge whether the inspection piece is qualified. The piece with only the signal light 1 on is qualified, and the piece with the signal light 2 on or both the signal light 1 and the signal light 2 off is unqualified. This allows the inspector to quickly judge whether multiple face differences are qualified, thereby increasing the service life of the inspection tool.

[0020] Preferably, the oil outlet and oil return port of the oil cylinder 1 and the oil cylinder 2 are both connected to a throttle valve.

[0021] By setting a throttle valve, the movement speed of cylinder 1 and cylinder 2 is controlled to avoid excessive collision between the feeler gauge and the detection part, which may cause damage to the detection part, or even damage the feeler gauge and affect the detection of the inspection fixture.

[0022] Preferably, a protective cover is detachably connected to the second mounting seat.

[0023] By setting a detachable protective cover, the feeler gauge can be wrapped with the protective cover when the inspection tool is not in use, to prevent the feeler gauge from being exposed to the air and corroded, which may affect the detection accuracy of the feeler gauge;

[0024] Furthermore, the protective cover can adopt a plug-in connection method or a snap-on connection method. The snap-on connection method has better sealing performance and does not cause significant wear during use, so it has a longer service life. The plug-in type will cause wear during use and has a shorter service life, but the plug-in type is more convenient in use. In addition to the plug-in or snap-on detachable connection methods, other detachable connection methods can also be used, so that the protective cover can be fixed on the slider 2 to protect the feeler gauge when not in use.

[0025] Preferably, the fixed platform is provided with an anti-deflection buckle, and the anti-deflection buckle includes a mounting seat three, a fixed block three and a movable block two. The mounting seat three is fixedly installed above the fixed platform, and a fixed block three is provided on the mounting seat three. A rotating shaft two is rotatably installed on the fixed block three, and a movable block two is rotatably installed on the rotating shaft two. The movable block two and the contact surface of the detection piece are symmetrically provided with two slide grooves, and anti-deflection blocks are movably installed inside the two slide grooves. A detection sensor three is provided inside the two slide grooves, and the detection sensor three is a pressure sensor.

[0026] The movable block two rotates, so that the anti-deviation block contacts the surface of the detection part and then pushes the anti-deviation block to slide inside the slide groove, causing the anti-deviation block to squeeze the detection sensor three. When the detection part is placed with an offset angle less than 5° and the detection part is not completely stuck, the push of the anti-deviation block can move the detection part and correct the deviation of the detection part. When the detection part is placed with an offset angle greater than 5° and the detection part is completely stuck, the two anti-deviation blocks exert different pressures on the detection sensor three due to the uneven surface of the detection part. When one of the detection sensors three is subjected to a pressure greater than the set value and the detection sensors three on both sides detect that the pressure deviation is greater than the set value, the movable block two releases the detection part, thereby avoiding the detection part from being improperly installed due to the inspector's operational error, causing the actual vehicle buckle to damage the detection part or even damage the actual vehicle buckle.

[0027] Furthermore, a plurality of rolling balls are embedded under the anti-deviation block. By providing a plurality of balls, it is avoided that the detection buckle completely clamps the detection part, which causes the detection part to be unable to move when the actual vehicle buckle clamps the detection part later.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The front-end frame injection molding inspection fixture described in the present invention automatically clamps the inspection part by arranging a hydraulically driven real vehicle buckle, thereby achieving simultaneous clamping of the inspection part by multiple real vehicle buckles, avoiding the uneven force generated on the inspection part when manually operating multiple real vehicle buckles to clamp the inspection part, thereby affecting the inspection accuracy of the inspection part, and making the installation of the inspection part simpler. By arranging a detection device to simultaneously detect multiple face differences of the inspection part, the trouble of the inspector in detecting multiple face differences is reduced, and the inspection efficiency is improved.

[0030] 2. The front-end frame injection molded part inspection fixture described in the present invention has a feeler gauge tilted 3°-5° from the vertical direction, so that the feeler gauge always fits the inspection surface of the inspection part during inspection, avoiding inspection errors caused by feeler gauge position deviation due to component wear, thereby increasing the service life of the inspection device.

[0031] 3. The front-end frame injection molding inspection fixture described in the present invention can correct the deviation of the inspection part when the deviation angle of the inspection part placement position is small by providing an anti-deflection buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a cross-sectional view of the actual vehicle buckle of the present invention when in operation;

[0034] Figure 3 A side view of the detection device of the present invention when in operation;

[0035] Figure 4 For the present invention Figure 3 Cross-section at AA;

[0036] Figure 5 It is a partial structural cross-sectional view of the anti-deflection component of the present invention;

[0037] Figure 6 For the present invention Figure 5 Cross-section at the middle BB;

[0038] Figure 7 For the present invention Figure 1 A partial enlarged view of point C in the middle;

[0039] Figure 8 For the present invention Figure 4 A partial enlarged view of point D in the middle.

[0040] In the figure: 1. Fixing platform; 2. Real vehicle buckle; 201. Mounting seat 1; 202. Fixing block 1; 203. Movable block 1; 204. Rotating shaft 1; 3. Detection block; 4. Driving device 1; 401. Housing; 402. Slideway; 403. Slide bar; 404. Rack; 405. Gear; 5. Detection device; 501. Mounting seat 2; 502. Fixing block 2; 503. Slide block 1; 504. Slide block 2; 505. Cylinder 1; 506. Cylinder 2; 507. Detection board; 508, detection sensor one; 509, detection sensor two; 510, signal light one; 511, signal light two; 512, feeler gauge; 5121, through gauge; 5122, stop gauge; 6, protective cover; 7, anti-deflection buckle; 701, mounting seat three; 702, fixed block three; 703, movable block two; 704, slide groove; 705, anti-deflection block; 706, detection sensor three; 707, ball bearing; 708, rotating shaft two; 8, driving device two; 9, detection part. DETAILED DESCRIPTION

[0041] Example 1, as Figures 1 to 8 As shown, this embodiment is used to detect a detection member 9 with a face difference accuracy higher than 0.05 mm, specifically as follows:

[0042] A front-end frame injection molding inspection fixture includes a fixed platform 1, a plurality of real vehicle buckles 2 and a plurality of detection blocks 3 are provided above the fixed platform 1, the detection block 3 is bolted to the fixed platform 1, the real vehicle buckle 2 includes a mounting seat 201, a fixed block 202 and a movable block 203, the mounting seat 201 is bolted to the top of the fixed platform 1, a fixed block 202 is provided on the mounting seat 201, the fixed block 202 is integrally connected to the mounting seat 201, a rotating shaft 204 is rotatably installed on the fixed block 202, a movable block 203 is rotatably installed on the rotating shaft 204, a driving device 4 for simultaneously operating the multiple movable blocks 203 is provided on the rotating shaft 204, and a detection device 5 for automatically detecting the width of the gap between the surface of the detection piece 9 and the detection block 3 is provided on the fixed platform 1.

[0043] The driving device 4 includes a shell 401 fixedly mounted on the mounting base 201, and the shell 401 is connected to the mounting base 201 by bolts. A slide 402 is provided inside the shell 401, and a slide rod 403 is slidably installed inside the slide 402. A rack 404 is provided on the slide rod 403, and a gear 405 that meshes with the rack 404 is rotatably installed above the shell 401. The rotating shaft 204 penetrates the gear 405 and is fixedly connected to the gear 405. The rotating shaft 204 and the shell 401 are sealed and rotatably connected. An oil port 1 and an oil port 2 respectively connected to the two ends of the slide 402 are provided on the shell 401. The oil port 1 and the oil port 2 are connected to a reversing valve, and the reversing valve is connected to an oil supply device 1. The oil supply device 1 adopts an oil pump to supply oil. The oil port 1, the oil port 2 and the oil supply device are connected by a pilot relief valve hydraulic circuit to ensure that the clamping force of the actual vehicle buckle 2 on the detection part 9 is constant;

[0044] The detection device 5 includes a mounting base 2 501 fixedly mounted on the fixed platform 1, the mounting base 2 501 includes a fixed block 2 502, a slider 1 503 is slidably mounted on the fixed block 2 502, a slider 2 504 is slidably mounted on the slider 1 503, and a cylinder 1 505 is connected to the slider 1 503. The stroke of the cylinder 1 505 is 1 cm and the internal diameter is 0.5 cm. The cylinder 1 505 is fixedly connected to the fixed block 2 502 by bolt connection. A feeler gauge 512 is movably connected to the slider 2 504. The feeler gauge 512 is elastically connected to the slider 2 504 through a spring 1. The lower end of the feeler gauge 512 is a straight ruler 5121 with a width of 2.98 mm. The lower end of the feeler gauge 512 is a stop gauge 5122. The width of ruler 5122 is 3.03mm, and a cylinder 2 506 is provided on the slider 2 504. The stroke of cylinder 2 506 is 3cm, and the internal diameter is 0.8cm. The output end of cylinder 2 506 is connected to the slider 2 504. Cylinder 1 505 and cylinder 2 506 are both connected to oil supply device 2. Oil supply device 2 is supplied by an oil pump. When cylinder 2 506 and cylinder 1 505 are extended, a pilot circuit is used to connect to oil supply device 2. In the pilot circuit, the pressure of the pilot valve connected to cylinder 1 505 is less than that of the pilot valve connected to cylinder 2 506. When cylinder 1 505 and cylinder 2 506 are retracted, a pilot circuit is used to connect to oil supply device 2. The pressure of the pilot valve connected to cylinder 1 505 is greater than that of the pilot valve connected to cylinder 2 506.

[0045] The feeler gauge 512 is inclined 3°-5° with respect to the vertical direction and the inclination direction is from the detection block 3 side to the detection member 9 side.

[0046] A feeler gauge 512 is movably mounted on slider 2 504 , a detection plate 507 is slidably mounted on slider 2 504 , a detection sensor 1 508 is provided on detection plate 507 , a detection sensor 2 509 is provided on slider 2 504 , a signal light 1 510 and a signal light 2 511 are provided on fixing seat 1 , detection sensor 1 508 is electrically connected to signal light 1 510 , detection sensor 2 509 is electrically connected to signal light 2 511 , signal light 1 510 is a green light, signal light 2 511 is a red light, and detection sensor 1 508 and detection sensor 2 509 are both piezoresistors.

[0047] The oil outlet and oil return port of oil cylinder 1 505 and oil cylinder 2 506 are both connected to throttle valves. The maximum flow rate of the throttle valve connected to oil cylinder 1 505 is 13 ml / s, and the maximum flow rate of the throttle valve connected to oil cylinder 2 506 is 50 ml / s.

[0048] The second mounting seat 501 is connected with a protective cover 6 in a snap-fit ​​manner.

[0049] The fixed platform 1 is provided with an anti-bias buckle 7, which includes a mounting seat 3 701, a fixed block 3 702 and a movable block 2 703. The mounting seat 3 701 is fixedly mounted above the fixed platform 1, and a fixed block 3 702 is provided on the mounting seat 3 701. A rotating shaft 2 708 is rotatably mounted on the fixed block 3 702. The rotating shaft 2 708 is connected to a driving device 2 8. The driving device 2 8 and the driving device 1 4 are driven by a gear 405 rack 404 transmission method, and the driving device 2 8 and the driving device 1 4 are driven by a gear 405 rack 404 transmission method. Device 1 4 is connected to an oil supply device using a pilot circuit. The pilot pressure of the pilot valve connected to drive device 2 8 is less than the pilot pressure of the pilot valve connected to drive device 1 4. A movable block 2 703 is rotatably installed on the rotating shaft 2 708. Two slide grooves 704 are symmetrically provided on the contact surface between the movable block 2 703 and the detection part 9. Anti-deflection blocks 705 are movably installed inside the two slide grooves 704. Detection sensors 3 706 are provided inside the two slide grooves 704. Detection sensors 3 706 are pressure sensors.

[0050] A plurality of rolling balls 707 are embedded below the anti-deflection block 705 .

[0051] Before work, check for faults in the oil supply device 1 and the oil supply device 2, and then use an air gun to blow away the dust on the actual vehicle buckle 2, the anti-deflection buckle 7, the detection block 3, and the detection device 5 to complete the preparation work.

[0052] During operation, the detection part 9 is placed on the real vehicle buckle 2, and then the oil supply device 1 is started. The pilot pressure of the pilot valve connected to the drive device 2 8 is less than the pilot pressure of the pilot valve connected to the drive device 1 4. The movable block 2 703 moves first. When the detection part 9 deviates but is not completely stuck, the detection part 9 can be corrected with the help of the force of the movable block 2 703. When the detection part 9 deviates but is completely stuck, the detection pressures of the two detection sensors 3 706 differ by 10N, and the detection pressure value of one of the detection sensors 3 706 is greater than 20N, and oil is supplied. The device releases pressure, and the movable block 2 703 opens, thereby preventing the detection piece 9 from being damaged by the clamping of the actual vehicle buckle 2 due to improper placement of the detection piece 9; the detection piece 9 is placed without deviation, and the pressures detected by the two detection sensors 3 706 are equal. The movable block is no longer opened, and the pressure inside the hydraulic circuit gradually increases. When the pressure in the hydraulic circuit is greater than the pressure of the pilot valve connected to the drive device 1 4, the drive device 1 4 moves, and the meshing transmission of the gear 405 and the rack 404 and the rotation of the shaft 1 204 drive the movable block 1 203 to rotate and clamp the detection piece 9;

[0053] After the detection piece 9 is completely clamped, the oil supply device 2 is started to supply oil to the oil cylinder 1 505 and the oil cylinder 2 506. The pressure of the pilot valve connected to the oil cylinder 1 505 is less than that of the pilot valve connected to the oil cylinder 2 506. The oil cylinder 1 505 is extended first, pushing the slider 1 503 to move. After the feeler gauge 512 contacts the surface of the detection piece 9, the oil cylinder 2 506 continues to extend 0.5 cm until the oil cylinder 1 505 moves to the maximum and stops moving. After the oil cylinder 1 505 stops, the pressure in the hydraulic circuit increases. When the pressure is greater than the pilot valve connected to the oil cylinder 2 506, the oil cylinder 2 506 extends and pushes the feeler gauge 512 to move downward. When the feeler gauge 5121 cannot enter the gap between the detection piece 9 and the detection block 3, the feeler gauge 512 is pushed to retract, first contacting and pressing the detection plate 507. Detection sensor 1 508, at this time signal light 1 510 lights up green, at this time cylinder 2 506 continues to move, pushing the feeler gauge 512 to continue to retract, causing the detection plate 507 to press against detection sensor 2 509, at this time the red light lights up, and cylinder 2 506 stops moving. When the through gauge 5121 can enter the gap between the detection piece 9 and the detection block 3 and the stop gauge 5122 cannot pass through, the retraction stroke of the feeler gauge 512 is reduced, the feeler gauge 512 will only contact the detection plate 507, and then only press against detection sensor 1 508, only signal light 1 510 will light up green, when both the through gauge 5121 and the stop gauge 5122 can enter the gap between the detection piece 9 and the detection block 3, the feeler gauge 512 will not retract, and both signal light 1 510 and signal light 2 511 will not light up;

[0054] After the oil cylinder 2 506 is fully pressed down, people can observe the color of the signal and other indicators to judge whether the detection part 9 is qualified. The one with only green light is qualified, while the one with red light on or both red and green lights off is unqualified.

[0055] After the inspector has recorded the test results of each test surface, the oil supply device 2 is started to supply oil to the oil cylinder 1 505 and the oil cylinder 2 506. When the oil cylinder 1 505 and the oil cylinder 2 506 retract, the priority of the oil cylinder 1 505 is greater than that of the oil cylinder 2 506. The oil cylinder 1 505 retracts first. After the oil cylinder 1 505 is fully retracted, the oil cylinder 2 506 begins to retract, so that the feeler gauge 512 is away from the top of the actual vehicle buckle 2, so as to avoid the feeler gauge 512 being located above the actual vehicle buckle 2 and affecting the installation of the detection part 9. After the detection part 9 is reset, the oil supply device 1 is started to release the actual vehicle buckle 2 and the detection buckle through the reversing valve to release the detection part 9. After the inspection of the single-room detection part 9 is completed, the inspection of the next detection part 9 can be carried out. It should be noted that when inspecting the next detection part 9, it is also necessary to use an air gun to clean the dust on the surface of the inspection tool.

[0056] After the inspection of the test piece 9 is completed, use an air gun to clean the dust on the surface of the feeler gauge 512 and brush it with lubricating oil. Finally, put the protective cover 6 on the feeler gauge 512 and fix it on the slider 2 504. After all the used feeler gauges 512 are covered with the protective cover 6, cover the inspection tool with cloth or plastic film.

[0057] Example 2, as Figures 1 to 8 As shown, this embodiment is used to detect a detection member 9 with a face difference accuracy lower than 0.05 mm, specifically as follows:

[0058] In the second embodiment, the driving device 1 4, the driving device 2 8, the oil cylinder 1 505 and the oil cylinder 2 506 are all driven by air pressure. The air pressure drive can be directly connected to the air supply device of the air gun without the need for an additional power source, thereby reducing the manufacturing cost. However, the vibration generated by the air pressure drive is relatively large, which will affect the detection accuracy. Therefore, the air pressure drive method is suitable for detecting the detection part 9 with lower detection accuracy.

[0059] Example 3, as Figures 1 to 8 As shown, this embodiment is used for testing the test piece 9 with a testing interval of 1-2 days, specifically as follows:

[0060] In the third embodiment, the protective cover 6 and the slider are connected by a snap-fit ​​connection. The snap-fit ​​connection has better sealing performance, less wear during use, and a long service life. Compared with the first embodiment, the protective cover 6 is used and then the plug-in connection method is used. The plug-in connection method has greater friction during use, and the plug-in connection method will cause rapid wear of the connection when it is frequently disassembled and assembled, resulting in reduced sealing performance and a short service life. For this reason, when inspecting the inspection piece 9 with an inspection interval of 1-2 days, since the protective cover 6 needs to be frequently disassembled, a snap-fit ​​connection with a longer service life is adopted, but the snap-fit ​​connection is more troublesome to use.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A front-end frame injection molding inspection fixture, comprising a fixed platform (1), a plurality of real vehicle buckles (2) and a plurality of detection blocks (3) are provided above the fixed platform (1), the detection blocks (3) are fixedly mounted on the fixed platform (1), the real vehicle buckle (2) comprises a mounting seat (201), a fixed block (202) and a movable block (203), the mounting seat (201) is fixedly mounted above the fixed platform (1), a fixed block (202) is provided on the mounting seat (201), a rotating shaft (204) is rotatably mounted on the fixed block (202), and a movable block (203) is rotatably mounted on the rotating shaft (204), characterized in that: The rotating shaft (204) is provided with a driving device (4) for simultaneously driving a plurality of movable blocks (203), and the fixed platform (1) is provided with a detection device (5) for automatically detecting the width of the gap between the surface of the detection member (9) and the detection block (3); The driving device (4) comprises a housing (401) fixedly mounted on a mounting seat (201), a slideway (402) being provided inside the housing (401), a slide bar (403) being slidably mounted inside the slideway (402), a rack (404) being provided on the slide bar (403), a gear (405) being rotatably mounted above the housing (401) and meshing with the rack (404), the rotating shaft (204) penetrating the gear (405) and being fixedly connected to the gear (405), an oil port (1) and an oil port (2) being respectively connected to two ends of the slideway (402), the oil port (1) and the oil port (2) being connected to a reversing valve, and the reversing valve being connected to an oil supply device (1).

2. A front-end frame injection molded parts inspection fixture according to claim 1, characterized in that: The oil port 1 and the oil port 2 are both connected with a pressure valve.

3. A front-end frame injection molded parts inspection fixture according to claim 1, characterized in that: The detection device (5) comprises a mounting seat 2 (501) fixedly mounted on a fixed platform (1), a fixed block 2 (502) fixedly mounted above the mounting seat 2 (501), a slider 1 (503) slidably mounted on the fixed block 2 (502), a slider 2 (504) slidably mounted on the slider 1 (503), an oil cylinder 1 (505) connected to the slider 1 (503), the oil cylinder 1 (505) being fixedly connected to the fixed block 2 (502), a feeler gauge (512) movably connected to the slider 2 (504), the feeler gauge (512) being elastically connected to the slider 2 (504) via a spring 1, and the feeler gauge (512) being movably connected to the slider 2 (504) via a spring 1. 2) The lower end is a straight ruler (5121), the upper end of the feeler gauge (512) is a stop gauge (5122), the slider one (503) is located on both sides of the slider two (504), and two oil cylinders (506) are symmetrically installed, the output ends of the two oil cylinders (506) are connected to the slider two (504), the oil cylinder one (505) and the oil cylinder two (506) are both connected to the oil supply device two, when the oil cylinder two (506) and the oil cylinder one (505) are extended, the oil cylinder two (506) has a higher priority than the oil cylinder one (505), and when the oil cylinder one (505) and the oil cylinder two (506) are retracted, the oil cylinder one (505) has a higher priority than the oil cylinder two (506).

4. A front-end frame injection molded parts inspection fixture according to claim 3, characterized in that: The feeler gauge (512) is inclined 3°-5° with respect to the vertical direction, and the inclination direction is from the side of the detection block (3) to the side of the detection member (9).

5. The front-end frame injection molding inspection fixture according to claim 3, characterized in that: The feeler gauge (512) is movably mounted on the second slider (504), a detection plate (507) is slidably mounted inside the second slider (504), a detection sensor (508) is provided on the detection plate (507), a detection sensor (509) is provided inside the second slider (504), a signal light (510) and a signal light (511) are provided on the second fixed block (502), the detection sensor (508) is electrically connected to the signal light (510), and the detection sensor (509) is electrically connected to the signal light (511).

6. A front-end frame injection molded parts inspection fixture according to claim 3, characterized in that: The oil outlet and oil return port of the oil cylinder 1 (505) and the oil cylinder 2 (506) are both connected with a throttle valve.

7. The front-end frame injection molded part inspection fixture according to claim 3, characterized in that: The second mounting seat (501) is detachably connected to a protective cover (6).

8. The front-end frame injection molded parts inspection fixture according to claim 1, characterized in that: The fixed platform (1) is provided with an anti-deflection buckle (7), and the anti-deflection buckle (7) includes a mounting seat three (701), a fixed block three (702) and a movable block two (703). The mounting seat three (701) is fixedly mounted above the fixed platform (1). The mounting seat three (701) is provided with a fixed block three (702). A rotating shaft two (708) is rotatably mounted on the fixed block three (702). The rotating shaft two (708) is connected to a driving device two (8). The driving device one (4) is similar to the driving device two (8). The movable block two (703) is rotatably mounted on the rotating shaft two (708). The movable block two (703) is symmetrically provided with two slide grooves (704) on the contact surface with the detection member (9). The two slide grooves (704) are both movably provided with anti-deflection blocks (705). The two slide grooves (704) are both provided with detection sensors three (706).

9. A front-end frame injection molded part inspection fixture according to claim 8, characterized in that: A plurality of rolling balls (707) are inlaid below the anti-deflection block (705).

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