A detection mechanism and detection method for metal castings

Abstract

The invention relates to the technical field of metal castings, and in particular to a detection mechanism and a detection method for metal castings, which solve the shortcomings existing in the prior art. The detection mechanism comprises a workbench, an impact mechanism, a clamping mechanism and an adjusting mechanism. Two fixing frames are installed on the workbench, a PLC controller is installed on one of the fixing frames, and an electric control box connected to the PLC controller is arranged inside the workbench. A transfer mechanism for transporting metal castings is arranged on one side of the top surface of the workbench. The impact mechanism reciprocates along the length direction of the workbench, and a top block with intermittent reciprocating linear motion is arranged on the impact mechanism, which is used to impact the metal casting to make the oxide scale fall off. Compared with the prior art, the invention can effectively realize the automatic detection of the influence of oxidation on the metal casting during the casting process.

Description

Technical Field

[0001] The invention relates to the technical field of metal castings, and in particular to a detection mechanism and a detection method for metal castings. Background Art

[0002] Die casting of metal castings uses high pressure to press molten metal into a precision metal mold cavity at high speed. The molten metal cools and solidifies under pressure to form a casting. In this process, the molten metal under high pressure can better fill every corner of the mold, reduce defects such as pores and shrinkage holes, and improve the density and surface quality of the casting.

[0003] During the die-casting process, metal castings, especially active metals such as iron and aluminum, will react chemically with oxygen in the air at high temperatures to form an oxide layer. During the heating process, if fuel is used for heating, the formation of the oxide layer will be accelerated due to the influence of the fuel combustion products. Therefore, the detection and treatment of oxide scale generated during the casting process of metal castings is an important process link, which is directly related to the quality of the castings and subsequent processing performance.

[0004] Patent No. CN116908196B discloses a metal casting surface defect detection device, which has the following defects:

[0005] 1. The technical solution of this patent adopts the method of video acquisition to detect the defects on the surface of metal castings. However, since the oxide scale on the metal castings has not been damaged or fallen off, the accuracy of the image detection method is not high;

[0006] 2. The technical solution of this patent uses the coordination of racks and gear rods to control the rotation adjustment of metal castings, while the shooting probe moves back and forth for shooting through the coordination of studs, slides and mounting frames. They need to be controlled separately from each other, and the detection position and shooting position cannot be synchronized;

[0007] 3. The technical solution of this patent can only realize the rotation adjustment of metal castings and the shooting and collection process, but cannot achieve the effect of detecting the formation of oxide scale.

[0008] Therefore, it is necessary to provide a detection mechanism and a detection method for metal castings, which can achieve the effect of automated detection. Summary of the invention

[0009] The object of the present invention is to provide a detection mechanism and a detection method for metal castings to solve the problems raised in the above background technology.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0011] A detection mechanism for metal castings, comprising a workbench, an impact mechanism, a clamping mechanism and an adjustment mechanism, wherein two fixing frames are installed on the workbench, a PLC controller is installed on one of the fixing frames, an electric control box connected to the PLC controller is arranged inside the workbench, and a transfer mechanism for transporting metal castings is arranged on one side of the top surface of the workbench;

[0012] The impact mechanism reciprocates along the length direction of the workbench, and a top block with intermittent reciprocating linear motion is provided on the impact mechanism, which is used to impact the metal casting to make the oxide scale fall off;

[0013] The clamping mechanisms are provided with two, and are rotatably arranged on opposite sides of the fixing frames at both sides, and the metal casting to be inspected is fixed between the two clamping mechanisms;

[0014] The adjustment mechanism includes gear three, gear four and a lifting plate;

[0015] A gear two is arranged below gear three, which can mesh with it and adjust its position. Gear three is connected and synchronized with the clamping mechanism, and can also control the reciprocating impact motion of the top block while rotating. The lifting plate moves and adjusts in the vertical direction. A swing arm is arranged between gear three and the lifting plate. Gear four and gear five are arranged on both sides of the lifting plate respectively. Gear four and gear five can be connected and synchronized with screw one individually. A tooth condition that can intermittently mesh is arranged between gear three and gear four. Every time gear three rotates one circle, the top block hits the surface of the metal casting once, and the tooth condition controls the rotation of gear four in a meshing transmission manner.

[0016] In one embodiment, a material-dropping channel is provided inside the workbench, and a mesh plate is installed at the entrance of the material-dropping channel. An extension platform connected to the workbench is provided on one side wall of the workbench, and a limit strip is installed on the extension platform.

[0017] The transfer mechanism includes an electric telescopic rod, a movable seat and a support plate. The electric telescopic rod is installed on the extension platform and its output shaft passes through the limit strip. The movable seat is installed on the end of the output shaft of the electric telescopic rod, and two support plates are arranged on both sides above the movable seat through electric cylinders. The support plate is an arc-shaped structure.

[0018] In one embodiment, the impact mechanism further includes a sliding seat, a U-shaped seat, a movable shaft and a gear 1;

[0019] A fixing box is installed on the workbench, the top of the fixing box is open, and a screw rod 1 is rotatably arranged between the two ends of the fixing box through a bearing, one end of the screw rod 1 penetrates through the inner wall of one end of the fixing box and is in rotational contact with it, and an extension shaft is also arranged on the end of the screw rod 1 located outside the fixing box, an electric suction cup is installed in one end of the extension shaft, the end of the screw rod 1 located outside the fixing box is not threaded and is rotatably arranged between the inner walls of the extension shaft, the end of the screw rod 1 located in the extension shaft penetrates and rotates between the inner walls of the electric suction cup, and the screw rod 1 and the electric suction cup can be connected as a whole by suction;

[0020] The slide seat is in a "T"-shaped structure and one end thereof slides between the inner walls of the fixed box. The screw rod 1 penetrates the slide seat and is threadedly matched with the slide seat. The U-shaped seat is installed on the top of the slide seat through the connecting seat. The shaft seat 2 is installed in the middle of the top of both sides of the connecting seat. A gear shaft is rotatably arranged between the two shaft seats 2. The gear 1 is fixedly installed in the middle position of the gear shaft and rotates synchronously with it, wherein the gear 1 is an incomplete gear.

[0021] The movable shaft is arranged through the side walls of both ends of the U-shaped seat, and one end thereof is connected and fixed with the top block, and a limit plate capable of adjusting the position is installed on the other end. A spring is sleeved on the outside of the movable shaft between the top block and the U-shaped seat, and a plurality of tooth grooves 1 matching with the gear 1 are opened on the movable shaft along its length direction;

[0022] A key shaft that rotates synchronously with the gear one is also passed through the middle of the gear one by a key connection. Fixed plates are installed on the side walls of both sides of the fixed frame. One end of the key shaft is rotatably set on the side wall of one of the fixed plates on one side of the fixed frame through a bearing, and the other end of the key shaft passes through the two fixed plates on the other side of the fixed frame and is in rotational contact with the two fixed plates on this side through a bearing.

[0023] In one embodiment, the clamping mechanism includes a clamping seat, a clamping block, a second rotating shaft, a worm sleeve and a second worm wheel;

[0024] The clamping seat is a "convex" structure with a cavity inside. Two clamping blocks are provided and are relatively arranged on one side wall of the clamping seat. A rotating shaft 1 and a screw rod 2 are respectively arranged between the inner walls of the clamping seat through bearings. A worm wheel 1 rotating synchronously with the rotating shaft 1 is installed on the rotating shaft 1. The two sides of the screw rod 2 are provided with oppositely arranged threads, and the screw rod 2 is provided with two threaded sleeves matched with the threaded transmission. The threaded sleeves on the same side are fixedly connected to the clamping block through a connecting piece, wherein a synchronous belt is also connected between the rotating shaft 1 and the screw rod 2 through two synchronous wheels 1.

[0025] One end of the second rotating shaft passes through one side wall of the clamping seat and is connected to the other side wall of the clamping seat, and the other end of the second rotating shaft passes through two fixed plates on the same side and is rotatably arranged through a bearing, and a positioner is also installed on one of the fixed plates, and the positioner is an electromagnet, and the worm sleeve is slidably sleeved on the outer surface of the second rotating shaft, and one end of the worm sleeve moves in the clamping seat and meshes with the worm gear for transmission, wherein the worm sleeve will never contact the synchronous wheel 1 on the screw rod 2 during the movement, and the other end of the second rotating shaft is fixedly connected with the third rotating shaft, and the gear 3 is installed at the end of the third rotating shaft, and the end of the second rotating shaft connected to the third rotating shaft passes through the positioner and is in rotational contact with it, and the positioner and the second rotating shaft can be connected and fixed together by suction;

[0026] A rotating motor 1 is installed on the fixed frame, a worm gear 2 is installed on the output shaft of the rotating motor 1 and rotates synchronously therewith, and the worm gear 2 is also meshed with the worm sleeve, and the worm gear 1 and the worm gear 2 are respectively located in the vertical direction and the horizontal direction.

[0027] In one embodiment, a rotary motor 2 and a linear motor are installed between the inner walls of one side wall of the workbench, a gear 2 is installed on the output shaft of the rotary motor 2 by means of a key connection and can be slidably adjusted along the output shaft, a limiting sleeve is connected to the end of the output shaft of the linear motor, the gear 2 always rotates between the inner walls of the limiting sleeve, and a limiting sleeve is sleeved on the outside of the output shaft of the linear motor, the limiting sleeve is arranged opposite to the limiting sleeve, and a contact sensor 2 is embedded on the side wall of the limiting sleeve facing the limiting sleeve;

[0028] A synchronous wheel 2 is installed on the rotating shaft 3 and rotates synchronously therewith. A synchronous wheel 2 is also installed on the end of the key shaft close to the adjustment mechanism and rotates synchronously therewith. A synchronous belt is connected between the two synchronous wheels 2, and the transmission ratio between the two synchronous wheels 2 is 1:1.

[0029] In one embodiment, when the gear two is meshed with the gear three, the rotating shaft three drives the rotating shaft two to rotate synchronously, and the clamping seat also rotates with the rotating shaft two. At the same time, under the action of the synchronous wheel two and the synchronous belt, the key shaft also rotates synchronously with the rotating shaft three, so that the gear one performs a circular motion driven by the key shaft. When the gear one is meshed and contacted with the movable shaft, the top block moves to the side away from the metal casting, and when the gear one is out of meshing with the movable shaft, the top block bounces to the side close to the metal casting under the action of the spring. When the top block contacts the metal casting, the limit plate also happens to contact one of the side walls of the U-shaped seat, and when the gear one rotates again to contact the movable shaft, it happens to mesh with one of the tooth grooves.

[0030] In one embodiment, an "L"-shaped vertical frame is further installed on the side wall of the workbench facing the adjustment mechanism, one of the vertical side walls of the lifting plate slides between the inner walls of the vertical frame, a horizontal through hole 2 and a vertical through hole 3 are opened on the lifting plate, an extension shaft passes through the through hole 3, and a card strip matching the gear 4 is also installed on the lifting plate;

[0031] A shaft seat 1 is also installed on the workbench, one end of the screw rod 1 located outside the fixed box passes through the shaft seat 1 and is in rotational contact with the shaft seat 1, an electromagnet 1 is arranged on the outer surface of the screw rod 1 between the shaft seat 1 and the extension shaft, the electromagnet 1 and the screw rod 1 can be connected as a whole through suction, one end of the electromagnet 1 is rotatably arranged between the inner walls of the shaft seat 1, a gear 5 is arranged on the outer surface of the screw rod 1 and is connected and fixed to the other end of the electromagnet 1, and a "T"-shaped electromagnet 2 is also installed on the side wall of the workbench below the electromagnet 1, one end of the electromagnet 2 is in rotational contact with one side wall of the gear 5 and can be connected as a whole through suction;

[0032] A connecting shaft 1 and a connecting shaft 2 are respectively provided between the inner walls at both ends of the swing arm through a rotational connection. A cam-shaped guide groove is provided on the surface of the gear 3 on one side facing the swing arm. The connecting shaft 1 is provided between the inner walls of the guide groove and is in rotational contact with the guide groove. An L bracket is also installed on the fixed frame on the side where the adjustment mechanism is located. The middle position of the swing arm is provided on the L bracket through an axis connection. The connecting shaft 2 slides between the inner walls of the through hole 2, and a "T"-shaped connector is also rotationally connected to the connecting shaft 2.

[0033] A connecting shaft three is provided on one end of the gear condition and is rotatably connected thereto. The connecting shaft three is installed on the gear three, and a uniformly distributed tooth groove two is provided on the bottom wall of the other end of the gear condition. The tooth groove two and the gear four can mesh and transmit. A guide strip fixed thereto is provided on the top wall of the gear condition, and the connecting piece is slidably arranged between the guide strip and the top wall of the gear condition.

[0034] In one embodiment, when the output shaft of the linear motor is extended to the farthest position, gear two is meshed with gear three, and gear three drives connecting shaft three to perform counterclockwise circular motion in the plane in which it is located. At the same time, connecting shaft one is continuously moved and adjusted under the action of the guide groove, so that connecting shaft two is also continuously slid and adjusted in through hole two, thereby controlling the vertical motion of the lifting plate. When the gear condition moves to be parallel to the swing arm, the gear condition at this time is just meshed with gear four, and the clip bar is located below gear four. Subsequently, gear four performs circular motion driven by the gear condition. When the gear condition is not meshed with gear four, the clip bar rises with the lifting plate to be just stuck in the gap between the two adjacent teeth at the bottom of gear four.

[0035] When the linear motor drives the limit sleeve to move to contact with the limit sleeve, contact sensor 2 is triggered. At this time, gear 2 moves to a position where it meshes with gear 5, and gear 5 rotates synchronously with screw 1, while screw 1 and the extension shaft no longer move synchronously.

[0036] In one embodiment, when the gear 2 is meshed with the gear 3, the electromagnet 1 is in rotational contact with the screw 1 and there is no suction between them, the electromagnet 2 is connected with the gear 5 by suction, and the screw 1 is connected with the extension shaft by suction of the electric suction cup;

[0037] When gear two is meshed with gear five, electromagnet one and screw one are connected together by suction, electromagnet two and gear five are in rotational contact without suction, and at this time, screw one and the extension shaft only have rotational contact because the suction of the electric suction cup disappears.

[0038] A detection method for a detection mechanism of a metal casting comprises the following steps:

[0039] S1. First, the metal casting to be inspected is sent to the middle of the two clamping mechanisms through the transfer mechanism, and then the clamping blocks on both sides are controlled to clamp and fix the metal casting through the cooperation of the worm gear 2 and the worm sleeve, and then the transfer mechanism is reset;

[0040] S2, then, in the initial state, gear 2 is meshed with gear 3, and gear 2 is started to rotate, so that gear 3 drives the clamping mechanism to rotate synchronously. At the same time, the key shaft is driven to rotate through the cooperation of synchronous wheel 2 and synchronous belt, and the top block on the impact mechanism continuously elastically impacts the outer surface of the metal casting, so that the oxide scale falls off;

[0041] During the circular motion of gear three, the gear conditions cooperate with the swing arm and the connecting piece to control the intermittent rotation of gear four, thereby controlling the rotation of screw one, and then continuously changing the position of the impact mechanism acting on the metal casting during the impact process, and continuously adjusting the position until the detection is completed;

[0042] S3. Then, after the detection is completed, after gear two continues to rotate to the same angle as its initial state, the position of gear two is switched so that it moves to mesh with gear five. At the same time, gear three is locked, and gear five is connected to screw one as a whole. Screw one and the extension shaft are no longer connected and synchronized. Subsequently, under the action of gear two, the impact mechanism is controlled to move to the side close to the adjustment mechanism and reset until it stops after resetting. Finally, gear two is reset to the meshing state with gear three.

[0043] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0044] The present invention provides an impact mechanism, a clamping mechanism and an adjusting mechanism, and uses gear two as a power input. When gear two is meshed with gear three for transmission, the rotation of gear three is controlled to synchronously control the clamping mechanism to adjust the rotation of the clamped metal casting, and the rotation of the key shaft is controlled to synchronously control the impact mechanism to reciprocately impact the surface of the metal casting, so that the oxide scale on the metal casting falls off. In addition, during each rotation of gear three, intermittent driving of gear four is achieved, so that the impact mechanism can continuously adjust its impact position without stopping the impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0046] In the attached picture:

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 yes Figure 1 A right view structural diagram of ;

[0049] Figure 3 It is a structural schematic diagram of the transfer mechanism of the present invention;

[0050] Figure 4 It is a structural schematic diagram of the impact mechanism of the present invention;

[0051] Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0052] Figure 6 yes Figure 5 Schematic diagram of the structure except the clamping seat;

[0053] Figure 7 is a bottom view schematic diagram of the connection between the clamping mechanism and the fixing frame of the present invention;

[0054] Figure 8 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0055] Fig. 9 yes Figure 8 Another perspective structural diagram of;

[0056] Fig.10 It is a schematic diagram of the connection between the screw rod 1, the extension shaft, the electric suction cup and the electromagnet 1 of the present invention.

[0057] In the figure: 1. workbench; 11. blanking channel; 12. fixing box; 121. screw rod 1; 1211. extension shaft; 1212. electric suction cup; 13. extension table; 131. limit strip; 14. shaft seat 1; 15. vertical frame; 2. transfer mechanism; 21. electric telescopic rod; 22. moving seat; 23. support plate; 3. fixing frame; 31. fixing plate; 32. PLC controller; 33. L bracket; 34. positioner; 4. impact mechanism; 41. slide seat; 42. connecting seat; 43. U-shaped seat; 44. movable shaft; 441. top block; 45. shaft seat 2; 46. gear 1; 47. key shaft; 5. clamping mechanism ;51. Clamping seat;511. Rotating shaft one;512. Worm gear one;513. Screw two;514. Threaded sleeve;52. Clamping block;53. Rotating shaft two;531. Rotating shaft three;54. Worm sleeve;55. Worm gear two;6. Adjusting mechanism;61. Gear two;62. Gear three;621. Guide groove;63. Limit sleeve;631. Limit sleeve;64. Swing arm;641. Connecting shaft one;65. Gear condition;651. Connecting shaft three;66. Gear four;67. Connecting piece;68. Gear five;681. Electromagnet one;682. Electromagnet two;69. Lifting plate;691. Connecting shaft two;692. Card strip. DETAILED DESCRIPTION

[0058] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0059] like Figure 1-2As shown, the present invention provides a technical solution: a detection mechanism for metal castings, comprising a workbench 1, a transfer mechanism 2, an impact mechanism 4, a clamping mechanism 5 and an adjustment mechanism 6, two vertical and opposite fixing frames 3 are installed on the workbench 1 by bolts, a PLC controller 32 is installed on the side wall of one side of the fixing frame 3 by screws, and fixing plates 31 are installed on the side walls of the fixing frame 3 by bolts, and the fixing frames 3 on both sides are provided with clamping mechanisms 5 on the outside of the opposite side walls, a metal casting (the object to be detected in this embodiment is a regular metal casting of a round tube type) is placed between the two groups of clamping mechanisms 5, a through blanking channel 11 is opened inside the workbench 1 below the metal casting, and a mesh plate is installed between the inner walls of the inlet of the blanking channel 11 by a clamping method, and an electric control box (not shown in the figure) connected to the PLC controller 32 is provided inside the workbench 1 on one side of the blanking channel 11 (the side where the PLC controller 32 is located)

[0060] A fixing box 12 with an open top is installed on one side of the mesh plate on the workbench 1 by screws. The fixing box 12 is arranged along the length direction of the workbench 1. A screw rod 121 is rotatably arranged in the fixing box 12. One end of the screw rod 121 penetrates the side wall of the fixing box 12, and an impact mechanism 4 is slidably arranged in the fixing box 12 by means of threaded transmission. The impact part of the impact mechanism 4 intermittently contacts and collides with the outer surface of the metal casting.

[0061] An extension platform 13 connected to the workbench 1 is provided on one side wall thereof, and a transfer mechanism 2 is provided on the extension platform 13 for feeding and taking out metal castings.

[0062] In addition, an adjusting mechanism 6 is provided on the other side of the fixing frame 3 on one side. The adjusting mechanism 6 acts between the clamping mechanism 5 and the impact mechanism 4, so that when the clamping mechanism 5 drives the metal casting to make a circular motion, the impact mechanism 4 can reciprocately impact the outer surface of the metal casting to detect the oxide scale that may exist on the metal casting, so that the oxide scale that may exist on the metal casting falls off due to the impact. After the clamping mechanism 5 drives the metal casting to rotate one circle, the impact mechanism 4 can move and adjust along the length direction of the fixing box 12, so that different positions of the metal casting can be detected.

[0063] like Figure 3 As shown, the transfer mechanism 2 includes an electric telescopic rod 21, a movable seat 22 and a support plate 23;

[0064] A limit strip 131 is installed on the extension platform 13 by screws, and the limit strip 131 is arranged along the length direction of the workbench 1. Two electric telescopic rods 21 are provided and are fixed to the table surface of the extension platform 13 on one side of the limit strip 131 by screws. The output shafts of the two telescopic electric rods are both penetrated by the limit strip 131 and are connected and fixed to one side wall of the moving seat 22. Two electric cylinders are installed between the inner walls of the moving seat 22. A support plate 23 is installed on the end of the output shaft of the electric cylinder by screws. The support plate 23 is arranged in an arc-shaped structure, wherein a contact sensor 1 (not shown in the figure) is embedded on the side wall surface of the limit strip 131 facing the moving seat 22, and the contact sensor 1 is connected to the PLC controller 32 by an electrical signal.

[0065] It should be further explained that when the output shaft of the electric telescopic rod 21 is extended to the farthest distance, the support plate 23 is just located at Figure 1 When the electric telescopic rod 21 drives the movable seat 22 to move back to contact with the limit strip 131, the contact sensor is triggered, causing the electric telescopic rod 21 to stop; when the support plate 23 moves to Figure 1 When the metal casting is directly below the position shown, the PLC controller 32 immediately controls the electric cylinder to start and control its rising distance, so that the lifted metal casting is just raised to the middle position of the clamping mechanisms 5 on both sides. After the clamping mechanisms 5 fix the metal casting, the electric cylinder resets and stops, and then the moving seat 22 resets and stops.

[0066] like Figure 4 As shown, the impact mechanism 4 includes a sliding seat 41, a connecting seat 42, a U-shaped seat 43, a movable shaft 44, a shaft seat 2 45, a gear 1 46 and a key shaft 47;

[0067] The slide 41 has a "T"-shaped structure and one end thereof slides and adjusts along the inner wall of the fixed box 12. The screw 121 penetrates the slide 41 and cooperates with the screw transmission therewith. The connecting seat 42 is installed on the top wall of the slide 41 by screws. The U-shaped seat 43 is fixed between the side walls of the connecting seat 42 by screws, and an axle seat 2 45 is installed in the middle of the top of both sides of the connecting seat 42 by screws. A gear shaft is rotatably arranged between the two axle seats 2 45, and a gear 1 46 is installed in the middle of the gear shaft to rotate synchronously therewith. The gear 1 46 is an incomplete gear.

[0068] A movable shaft 44 passes through the side walls at both ends of the U-shaped seat 43, a top block 441 is installed on one end of the movable shaft 44 by screws, and a limit plate is installed on the other end by screws. A spring is sleeved on the movable shaft 44, one end of the spring is fixed to the side wall of the U-shaped seat 43, and the other end is connected and fixed to the side wall of the top block 441. A plurality of tooth grooves 1 that mesh with incomplete gears are opened on the movable shaft 44, and the tooth grooves 1 are distributed along the length direction of the movable shaft 44.

[0069] like Figure 1 As shown, one end of the key shaft 47 passes through the two fixing plates 31 on one side of the fixing frame 3 and is rotatably arranged therewith, while the other end thereof is rotatably arranged on the side wall of one of the fixing plates 31 of the fixing frame 3 on the other side. The length of the key strip on the key shaft 47 is shorter than the length of the key shaft 47 (that is, no key strip is arranged at the parts where the two ends of the key shaft 47 contact the fixing plate 31). Figure 4 As shown, the key shaft 47 also passes through the gear shaft and is connected thereto via a key.

[0070] It should be further explained that, with the key shaft 47 as the power input, the key shaft 47 drives the gear shaft to rotate synchronously through the key connection transmission mode, so that the gear 1 46 rotates synchronously with the gear shaft, wherein the rotation direction of the gear 1 46 is Figure 4 As shown in the counterclockwise direction, during the rotation of gear 1 46, the movable shaft 44 is driven to make a linear motion toward the side where the limit plate is located, and the top block 441 moves synchronously therewith. When gear 1 46 rotates to not mesh with tooth groove 1, under the action of the spring, the movable shaft 44 and the top block 441 are synchronously bounced toward the side close to the metal casting, and finally a force is applied to the outer surface of the metal casting, so that the oxide scale on the surface is knocked off. When gear 1 46 rotates again to contact with the movable shaft 44, it is just meshed with tooth groove 1 again, thereby realizing the reciprocating impact of the top block 441.

[0071] Among them, the position of the limit plate is determined according to the contact position between the top block 441 and the metal casting, that is, during assembly, the rebound position of the top block 441 is pre-set, and the limit plate is installed at the position in contact with the U-shaped seat 43 in this state, and it is ensured that the first tooth of the gear 1 46 rotating counterclockwise after installation is in a meshing state with one of the tooth grooves 1, so as to ensure that each time the top block 441 is reset, the gear 1 46 can still mesh with the tooth groove 1 when it rotates next time.

[0072] The screw rod 121 is used for threaded transmission output, so that the slide seat 41 can move linearly along the inner wall of the fixed box 12, thereby driving the entire impact mechanism 4 to adjust its position.

[0073] like Figure 5-7 As shown, the clamping mechanism 5 includes a clamping seat 51, a clamping block 52, a second rotating shaft 53, a worm sleeve 54 and a second worm wheel 55;

[0074] The clamping seat 51 is arranged in a "convex" structure and its interior is a cavity structure. A fixing hole is opened on one side wall of the clamping seat 51. A rotating shaft 511 and a screw rod 513 are rotatably arranged between the inner walls of the clamping seat 51 through bearings respectively. A worm gear 512 that rotates synchronously with the rotating shaft 511 is installed in the middle of the rotating shaft 511. The worm gear 512 is installed in the clamping seat 51 along the vertical direction. There is no thread arrangement in the middle of the screw rod 513, and opposite threads are opened on both sides. Two threaded sleeves 514 are slidably arranged on the screw rod 513. The threaded sleeves 514 and the screw rod 513 are threadedly matched, and a connecting piece of a "Z"-shaped structure is installed on one side of the threaded sleeve 514 by screws, and a clamping block 52 is installed on the other end of the connecting piece by screws, and the end of the connecting piece connected to the clamping block 52 slides between the inner walls of the fixing hole.

[0075] Among them, synchronous wheels 1 are installed on the screw rod 2 513 and the rotating shaft 1 511. The two synchronous wheels 1 rotate synchronously with the screw rod 2 513 and the rotating shaft 1 511 connected thereto respectively, and a synchronous belt is connected between the two synchronous wheels 1.

[0076] A second rotating shaft 53 runs through the clamping seat 51, and one end of the second rotating shaft 53 is connected and fixed to the inner wall of the clamping seat 51, so that the second rotating shaft 53 can drive the clamping seat 51 to rotate and adjust. The other end of the second rotating shaft 53 runs through between two fixed plates 31, and a third rotating shaft 531 connected to it is also arranged on its end. A positioner 34 is installed on one of the fixed plates 31 (the positioner 34 is an electromagnet, and the positioner 34 is connected to the PLC controller 32 through an electrical signal). The second rotating shaft 53 runs through and is rotatably arranged between the inner walls of the positioner 34. When the contact sensor 2 is triggered, the positioner 34 immediately starts to lock the second rotating shaft 53. and rotating shaft three 531, thereby maintaining the state of gear three 62, a worm sleeve 54 is sleeved on the rotating shaft two 53 and is in sliding contact with it, a through hole one with a larger aperture than the worm sleeve 54 is opened on one side wall of the clamping seat 51, a worm wheel one 512 is meshed above the worm sleeve 54, and a horizontally arranged worm wheel two 55 is also meshed on one side of the worm sleeve 54, a rotating motor one is installed on the top wall of the fixing frame 3 by screws, a worm wheel shaft that rotates synchronously with the rotating motor one is connected to the end of the output shaft of the rotating motor one, the bottom end of the worm wheel shaft is rotatably arranged on the top surface of the workbench 1 through a bearing, and the worm wheel two 55 is installed on the worm wheel shaft and rotates synchronously with it.

[0077] It should be further explained that the rotating shaft three 531 drives the rotating shaft two 53 to rotate synchronously, so that the rotating shaft two 53 drives the clamping seat 51 connected thereto to rotate synchronously, thereby realizing the rotation detection of the metal casting; by starting the rotating motor one, it drives the worm gear two 55 to rotate, so that the worm sleeve 54 slides and adjusts to one side along the outer surface of the rotating shaft two 53, thereby driving the worm gear one 512 to rotate, and as the worm gear one 512 rotates, the rotating shaft one 511 and the synchronous wheel one thereon rotate synchronously, and then the synchronous wheel one on the other side and the screw one 121 are driven to rotate and adjust through the action of the synchronous belt, and then through the threaded cooperation between the threaded sleeve 514 and the screw one 121, under the guiding action of the fixing hole on the connecting piece, the clamping blocks 52 on both sides are controlled to move toward or away from each other, and stop when the metal casting is clamped or released.

[0078] like Figure 8-10 As shown, the adjustment mechanism 6 includes a gear 2 61, a gear 3 62, a limit sleeve 63, a swing arm 64, a gear condition 65, a gear 4 66, a connecting piece 67, a gear 5 68 and a lifting plate 69;

[0079] A rotating motor 2 is installed between the inner walls of the side wall on one side of the workbench 1, and a slidably adjustable gear 2 61 is installed on the output shaft of the rotating motor 2 by means of a key connection. A limiting sleeve 63 is arranged outside the gear 2 61, and a linear motor is installed between the inner walls of the side wall of the workbench 1 on one side of the limiting sleeve 63. The output shaft of the linear motor is connected and fixed to the side wall of the limiting sleeve 63, and a limiting sleeve 631 is sleeved on the outside of the output shaft of the linear motor. The limiting sleeve 631 is fixed to the side wall of the workbench 1 by screws, and a contact sensor 2 (not shown in the figure) is embedded on the side wall of the limiting sleeve 63 facing the limiting sleeve 631. The contact sensor 2 is connected to the PLC controller 32 by an electrical signal. When the limiting sleeve 63 moves to contact with the limiting sleeve 631, the contact sensor 2 is triggered and the linear motor is paused.

[0080] Gear three 62 is installed at the end position of rotating shaft three 531 by key connection (the position of gear three 62 remains unchanged), and gear three 62 is meshed with gear two 61 for transmission. A synchronous wheel two that rotates synchronously with rotating shaft three 531 is installed on one side of gear three 62 on rotating shaft three 531, and a synchronous wheel two that rotates synchronously with rotating shaft three 531 is also installed on one end of the key shaft 47. A synchronous belt is connected between the two synchronous wheels two, and the transmission ratio is 1:1.

[0081] It should be further explained that when gear two 61 and gear three 62 are in meshing state, by starting rotating motor two, gear two 61 drives gear three 62 to rotate synchronously, and gear three 62 synchronously drives rotating shaft three 531 and rotating shaft two 53 to rotate, so that under the action of synchronous belt and synchronous wheel two, key shaft 47 is also driven to rotate synchronously, so that the clamping mechanism 5 drives the metal casting to rotate. Gear one 46 drives the movable shaft 44 continuously with the key shaft 47, so that the top block 441 continuously and intermittently hits the outer surface of the metal casting, thereby knocking off the oxide scale that may exist on the outer surface of the metal casting.

[0082] An L bracket 33 is also installed on one side of the fixing frame 3 by screws, and a swing arm 64 is rotatably arranged at the bottom end of the L bracket 33 by means of an axis connection. A connecting shaft 1 641 is arranged between the inner walls at one end of the swing arm 64 for rotational contact therewith, and a connecting shaft 2 691 is arranged between the inner walls at the other end for rotational contact therewith, and the connecting shaft 2 691 is a "T"-shaped structure.

[0083] A cam-shaped guide groove 621 is provided on the side wall surface of one side of the gear three 62, one end of the connecting shaft one 641 is always located in the guide groove 621 and is in sliding contact with the inner wall of the guide groove 621, the lifting plate 69 is arranged in a vertical direction, and a horizontally arranged through hole two and a vertically arranged through hole three are provided on the lifting plate 69, one end of the connecting shaft two 691 penetrates and slides between the inner walls of the through hole two, and a "T"-shaped connecting piece 67 is also rotatably provided on the other end of the connecting shaft two 691.

[0084] A shaft seat 14 (see FIG. Figure 1As shown in the figure, the end of the screw rod 121 exposed on the fixed box 12 has no thread arrangement and is also provided with an extension shaft 1211 that can be connected to it as a whole. One end of the screw rod 121 is arranged in a "T"-shaped structure and is rotatably arranged between the inner walls of the extension shaft 1211, and an electric suction cup 1212 (arranged in a ring-shaped structure) is embedded between the inner walls of the extension shaft 1211. The "T"-shaped end of the screw rod 121 passes through the electric suction cup 1212 and is in rotational contact with it. The electric suction cup 1212 is connected to the PLC controller 32 through an electrical signal. When the electric suction cup 1212 is started, the extension shaft 1211 and the screw rod 121 can be connected as a whole through suction. Otherwise, the end of the screw rod 121 is in rotational contact between the extension shaft 1211 and the inner wall of the electric suction cup 1212. The end of the screw rod 121 without a thread passes through the shaft seat 14 and is in rotational contact with it, and at the extension shaft 1211 A gear 4 66 is installed on the other end by a key connection, and the position of the gear 4 66 remains unchanged. A gear 5 68 is also rotatably provided on the non-threaded part of the screw 121. A sleeve-shaped electromagnet 1 681 is installed on the gear 5 68 by a screw toward the middle of the side wall of the shaft seat 14. One end of the screw 121 passes through the electromagnet 1 681 and the two can be connected as a whole by suction. The other end of the electromagnet 1 681 is rotatably provided between the inner walls of the shaft seat 14 through a bearing. An electromagnet 2 682 with a "T"-shaped structure is also installed on the side wall of the workbench 1 below the extension shaft 1211 by a threaded connection. The electromagnet 1 681 and the electromagnet 2 682 are respectively electrically connected to the PLC controller 32, and the electromagnet 2 682 and the gear 5 68 can also be connected and fixed by suction. Among them, the electromagnet 1 681 and the electromagnet 2 682 will not work at the same time.

[0085] It should be further explained that, in the reset state of the gear 2 61, the reset state is the same position as the gear 2 61 in the initial state. The reset of the gear 2 61 is that the rotating motor 2 drives the gear 2 61 to continue to rotate in the original direction to the reset state. Assuming that the gear 2 61 rotates an angle A during the meshing process with the gear 3 62, the angle required to continue rotating to restore to the reset state is the remainder of 360-A / 360. The reset states of the gear 2 61 described below are all the same.

[0086] When the limit sleeve 63 moves to contact with the limit sleeve 631, the contact sensor 2 is triggered, and the gear 2 61 is meshed with the gear 5 68 at this time, and the electromagnet 2 682 and the electric suction cup 1212 stop working at this time, and the electromagnet 1 681 starts working, so that the gear 5 68 and the screw 1 121 are connected as a whole, and the screw 1 121 and the extension shaft 1211 do not affect each other. By driving the gear 2 61 to rotate, the gear 5 68 can be controlled to drive the screw 1 121 to rotate in the opposite direction, so that the impact mechanism 4 moves and resets under the drive of the screw 1 121;

[0087] After the impact mechanism 4 is reset, the limit sleeve 63 drives the gear 2 61 to move toward the side where the gear 3 62 is located. At the same time, during the movement, the rotating motor 2 controls the gear 2 61 to rotate to the reset state, so that when the gear 2 61 moves to contact with the gear 3 62, it is just engaged again. After the gear 2 61 is reset, the electromagnet 2 682 and the electric suction cup 1212 start working, and the electromagnet 1 681 stops working, so that the electromagnet 2 682 at this time adsorbs and fixes the gear 5 68, and the extension shaft 1211 and the screw 1 121 are also connected as a whole again.

[0088] A connecting shaft 3 651 is rotatably arranged between the inner walls at one end of the gear condition 65, and one end of the connecting shaft 3 651 is installed on the gear 3 62 by means of a threaded connection, so that the connecting shaft 3 651 makes a circular motion synchronously with the gear 3 62, and a plurality of tooth grooves 2 are provided on the bottom wall at the other end of the gear condition 65, and the tooth grooves 2 can mesh with the gear 4 66 for transmission, and a "T"-shaped guide strip is welded on the top surface of the gear condition 65, and the connecting piece 67 slides between the guide strip and the top surface of the gear condition 65.

[0089] A clamping strip 692 is installed on the lifting plate 69 by screws, and the clamping strip 692 matches the gap between adjacent teeth on the gear four 66. An "L"-shaped vertical frame 15 is also provided on one side of the lifting plate 69. A through groove is opened on the vertical side wall of the vertical frame 15. The lifting plate 69 slides along the inner wall of the through groove to limit the position, and one end of the vertical frame 15 is fixed to the side wall of the workbench 1 by screws.

[0090] It should be further explained that, in the process of gear three 62 making circular motion with gear two 61, connecting shaft one 641 continuously moves up and down along the trajectory of guide groove 621, so that connecting shaft two 691 slides and adjusts in through hole two, thereby controlling the lifting and lowering adjustment of lifting plate 69, and connecting shaft three 651 drives gear condition 65 to move together with the rotational motion of synchronous gear three 62. Due to the limitation of gear condition 65 by connecting member 67, gear condition 65 is always movable and adjusted under swing arm 64. When gear condition 65 meshes with gear four 66, in the subsequent process, gear condition 65 continues to drive gear four 66 to rotate, so that gear four 66 at this time drives screw one 121 to rotate, and controls the position adjustment of impact mechanism 4. After connecting shaft three 651 rotates one circle with gear three 62, gear four 66 rotates once driven by gear condition 65, so as to continuously change the detection position.

[0091] like Figure 2 As shown, the bold track in the figure is track a, and the remaining part is track b. Figure 2The counterclockwise rotation as shown makes gear four 66 rotate clockwise with the gear condition 65, thereby controlling the impact mechanism 4 to move to the side away from the adjustment mechanism 6. During the rotation of gear three 62, when the gear condition 65 rotates to be parallel to the swing arm 64, the gear condition 65 at this time just meshes with gear four 66, and the connecting shaft 1 641 at this time contacts and moves with the track b, and the clamping strip 692 is located below the gear four 66. When the gear condition 65 leaves the gear four 66, the connecting shaft 1 641 at this time just contacts and moves with the track a, and the clamping strip 692 at this time is stuck in the gap between the two lowest teeth of the gear four 66 as the lifting plate 69 rises, so that the gear four 66 at this time stops rotating, and the reciprocating coordinated movement is realized, thereby realizing the process of continuously changing the position of the impact detection during the rotation of the metal casting.

[0092] Working principle:

[0093] First, the metal casting to be inspected is moved to the bottom of the inspection position by the transfer mechanism 2, and then the metal casting is lifted to the middle of the two clamping mechanisms 5 by the support plate 23 in cooperation with the lifting and lowering movement of the electric cylinder. By starting the rotating motor 1, the worm gear 2 55 controls the movement of the worm sleeve 54, and the worm sleeve 54 drives the worm gear 1 512 to rotate. Under the action of the synchronous wheel 1 and the synchronous belt, the screw 2 513 rotates accordingly and controls the two clamping blocks 52 on the clamping seat 51 to move closer to one side of the metal casting until the metal casting is clamped and fixed. Then, the transfer mechanism 2 is reset.

[0094] Next, the rotating motor 2 is started to drive the gear 2 61 to rotate. Initially, the gear 2 61 is in meshing with the gear 3 62. As the gear 2 61 rotates, the gear 3 62 rotates synchronously, thereby driving the clamping mechanism 5 and the clamped metal casting to rotate together through the rotating shaft 3 531 and the rotating shaft 2 53. At the same time, the key shaft 47 also rotates together with the rotating shaft 3 531 under the action of the synchronous wheel 2, and the key shaft 47 drives the gear 1 46 to rotate, so that the movable shaft 44 drives the top block 441 to continuously elastically impact the surface of the metal casting, so that the oxide scale on the surface of the metal casting is impacted and falls off;

[0095] During the rotation of gear three 62, the gear condition 65 moves continuously, and at the same time, the swing arm 64 also cooperates with the movement of the gear condition 65 under the rotation of gear three 62 to synchronously control the vertical movement of the lifting plate 69. Every time the gear three 62 rotates one circle, the gear four 66 also controls the impact mechanism 4 to move a distance away from the adjustment mechanism 6 under the action of the gear condition 65, and the impact is repeated while rotating. After the rotation, the position is adjusted and the cycle continues until the detection is completed.

[0096] Then, after the detection is completed, after gear two 61 continues to rotate to the position with the same angle as its initial state, the position of gear two 61 is switched so that it moves to mesh with gear five 68. At the same time, the positioner 34 is started to lock gear three 62, and gear five 68 is connected to screw one 121 as a whole, and screw one 121 and extension shaft 1211 are no longer connected and synchronized. Subsequently, the driving direction of gear two 61 is used to control the impact mechanism 4 to move to the side close to the adjustment mechanism 6 and reset until it stops after resetting, and then gear two 61 is moved back and gear two 61 is reset to the position with the same angle as its initial state in the process of moving to contact with gear three 62. Finally, when resetting, gear two 61 and gear three 62 are in meshing state.

[0097] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, internal communication between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the meanings of the above terms in this application can be understood according to specific circumstances.

[0098] The above is a detailed introduction to a detection mechanism and a detection method for metal castings provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A detection mechanism for metal castings, characterized in that: include: A workbench (1), wherein two fixing frames (3) are installed on the workbench (1), a PLC controller (32) is installed on one of the fixing frames (3), an electric control box connected to the PLC controller (32) is arranged inside the workbench (1), and a transfer mechanism (2) for transporting metal castings is arranged on one side of the top surface of the workbench (1); An impact mechanism (4), the impact mechanism (4) reciprocating along the length direction of the workbench (1), and a top block (441) with intermittent reciprocating linear motion is provided on the impact mechanism (4) for impacting the metal casting to cause the oxide scale to fall off; A clamping mechanism (5), wherein two clamping mechanisms (5) are provided and are rotatably arranged on opposite sides of the fixing frames (3) at both sides, and a metal casting to be inspected is fixed between the two clamping mechanisms (5); An adjusting mechanism (6), the adjusting mechanism (6) comprising a gear three (62), a gear four (66) and a lifting plate (69); A gear 2 (61) is disposed below the gear 3 (62) and is capable of meshing with the gear 3 (62) and adjusting its position. The gear 3 (62) is synchronously connected to the clamping mechanism (5), and the gear 3 (62) can also control the reciprocating impact movement of the top block (441) while rotating. The lifting plate (69) is adjusted to move in the vertical direction. A swing arm (64) is disposed between the gear 3 (62) and the lifting plate (69). Gear 4 (66) and gear 5 (68) are disposed on both sides of the lifting plate (69). Gear 4 (66) and gear 5 (68) can be individually synchronously connected to the screw 1 (121). A tooth condition (65) capable of intermittent meshing is disposed between the gear 3 (62) and the gear 4 (66). Each time the gear 3 (62) rotates one circle, the top block (441) hits the surface of the metal casting once, and the tooth condition (65) controls the rotation of the gear 4 (66) in a meshing transmission manner. The impact mechanism (4) further comprises a sliding seat (41), a U-shaped seat (43), a movable shaft (44) and a gear 1 (46); A fixing box (12) is mounted on the workbench (1), the top of the fixing box (12) is open, and a screw rod (121) is rotatably mounted between the two ends of the fixing box (12) via a bearing, one end of the screw rod (121) penetrates through the inner wall of one end of the fixing box (12) and is in rotatable contact therewith, and an extension shaft (1211) is also mounted on the end of the screw rod (121) located outside the fixing box (12), an electric suction cup (1212) is mounted inside one end of the extension shaft (1211), the end of the screw rod (121) located outside the fixing box (12) is not threaded and is rotatably mounted between the inner walls of the extension shaft (1211), the end of the screw rod (121) located inside the extension shaft (1211) penetrates through and rotatably mounts between the inner walls of the electric suction cup (1212), and the screw rod (121) and the electric suction cup (1212) can be connected as one body by suction; The slide seat (41) is in a "T"-shaped structure and one end thereof slides between the inner walls of the fixed box (12). The screw rod (121) penetrates the slide seat (41) and is threadedly coupled thereto. The U-shaped seat (43) is mounted above the slide seat (41) through the connecting seat (42). A shaft seat (45) is mounted in the middle of the top ends of both sides of the connecting seat (42). A gear shaft is rotatably arranged between the two shaft seats (45). The gear shaft (46) is fixedly mounted in the middle of the gear shaft and rotates synchronously therewith, wherein the gear shaft (46) is an incomplete gear. The movable shaft (44) is arranged to penetrate the side walls at both ends of the U-shaped seat (43), and one end thereof is connected and fixed to the top block (441), and a limit plate capable of adjusting the position is installed on the other end. A spring is sleeved on the outside of the movable shaft (44) between the top block (441) and the U-shaped seat (43), and a plurality of tooth grooves 1 matching the gear 1 (46) are opened on the movable shaft (44) along its length direction; A key shaft (47) is passed through the middle of the gear (46) by means of a key connection and rotates synchronously therewith. Fixed plates (31) are installed on both side walls of the fixed frame (3). One end of the key shaft (47) is rotatably arranged on the side wall of one of the fixed plates (31) on one side of the fixed frame (3) through a bearing. The other end of the key shaft (47) passes through two fixed plates (31) on the other side of the fixed frame (3) and is in rotational contact with the two fixed plates (31) on the side through a bearing. The clamping mechanism (5) comprises a clamping seat (51), a clamping block (52), a second rotating shaft (53), a worm sleeve (54) and a second worm wheel (55); The clamping seat (51) is of a "convex" structure and has a hollow interior. Two clamping blocks (52) are provided and are arranged on one side wall of the clamping seat (51) opposite to each other. A rotating shaft (511) and a screw rod (513) are rotatably arranged between the inner walls of the clamping seat (51) through bearings. A worm wheel (512) is installed on the rotating shaft (511) to rotate synchronously with the rotating shaft. Screw rod (513) has oppositely arranged threads on both sides. Two threaded sleeves (514) are provided on the screw rod (513) to cooperate with the threaded transmission. The threaded sleeves (514) on the same side are fixedly connected to the clamping block (52) through a connecting sheet. A synchronous belt is also connected between the rotating shaft (511) and the screw rod (513) through two synchronous wheels. One end of the second rotating shaft (53) passes through one side wall of the clamping seat (51) and is connected to the other side wall of the clamping seat (51). The other end of the second rotating shaft (53) passes through two fixed plates (31) located on the same side and is rotatably arranged through a bearing. A positioner (34) is also installed on one of the fixed plates (31). The positioner (34) is an electromagnet. The worm sleeve (54) is slidably sleeved on the outer surface of the second rotating shaft (53), and one end of the worm sleeve (54) moves in the clamping seat (51) and Meshing with worm wheel one (512), wherein the worm sleeve (54) will never come into contact with the synchronous wheel one on the screw rod two (513) during the movement, a rotating shaft three (531) is fixedly connected to the other end of the rotating shaft two (53), a gear three (62) is installed at the end of the rotating shaft three (531), and one end of the rotating shaft two (53) connected to the rotating shaft three (531) passes through the positioner (34) and is in rotational contact with the positioner (34), and the positioner (34) and the rotating shaft two (53) can be connected and fixed together by suction; A rotating motor 1 is mounted on the fixed frame (3), a worm gear 2 (55) is mounted on the output shaft of the rotating motor 1 and rotates synchronously therewith, and the worm gear 2 (55) is also meshed with the worm sleeve (54), and the worm gear 1 (512) and the worm gear 2 (55) are respectively located in the vertical direction and the horizontal direction; The workbench (1) has a second rotary motor and a linear motor installed between the inner walls of one side wall, a second gear (61) is installed on the output shaft of the second rotary motor by means of a key connection and can be slidably adjusted along the output shaft, a limiting sleeve (63) is connected to the end of the output shaft of the linear motor, the second gear (61) always rotates between the inner walls of the limiting sleeve (63), and a limiting sleeve (631) is sleeved on the outside of the output shaft of the linear motor, the limiting sleeve (631) is arranged opposite to the limiting sleeve (63), and a second contact sensor is embedded on the side wall of the limiting sleeve (63) facing the limiting sleeve (631); A synchronous wheel 2 is mounted on the rotating shaft 3 (531) and rotates synchronously therewith. A synchronous wheel 2 is also mounted on one end of the key shaft (47) close to the adjusting mechanism (6) and rotates synchronously therewith. A synchronous belt is connected between the two synchronous wheels 2, and the transmission ratio between the two synchronous wheels 2 is 1:

1. When the gear 2 (61) is meshed with the gear 3 (62), the rotating shaft 3 (531) drives the rotating shaft 2 (53) to rotate synchronously, and the clamping seat (51) also rotates with the rotating shaft 2 (53). At the same time, under the action of the synchronous wheel 2 and the synchronous belt, the key shaft (47) also rotates synchronously with the rotating shaft 3 (531), thereby causing the gear 1 (46) to perform a circular motion under the drive of the key shaft (47). When the gear 1 (46) is in meshing contact with the movable shaft (44), , the top block (441) moves to the side away from the metal casting, and when the gear 1 (46) and the movable shaft (44) are out of meshing state, the top block (441) is bounced to the side close to the metal casting under the action of the spring, and when the top block (441) contacts the metal casting, the limit plate also contacts one side wall of the U-shaped seat (43), and when the gear 1 (46) rotates again to contact the movable shaft (44), it is meshed with one of the tooth grooves 1; An "L"-shaped vertical frame (15) is also installed on the side wall of the workbench (1) facing the adjustment mechanism (6), one of the vertical side walls of the lifting plate (69) slides between the inner walls of the vertical frame (15), a horizontal through hole 2 and a vertical through hole 3 are opened on the lifting plate (69), an extension shaft (1211) is arranged to pass through the through hole 3, and a clamping strip (692) matching the gear 4 (66) is also installed on the lifting plate (69); A shaft seat (14) is also installed on the workbench (1), one end of the screw rod (121) located outside the fixing box (12) passes through the shaft seat (14) and is in rotational contact with the shaft seat, an electromagnet (681) is arranged on the outer surface of the screw rod (121) between the shaft seat (14) and the extension shaft (1211), the electromagnet (681) and the screw rod (121) can be connected as a whole by suction, one end of the electromagnet (681) is rotatably arranged between the inner walls of the shaft seat (14), a gear (68) is arranged on the outer surface of the screw rod (121) and is connected and fixed to the other end of the electromagnet (681), and a "T"-shaped electromagnet (682) is also installed on the side wall of the workbench (1) below the electromagnet (681), one end of the electromagnet (682) is in rotational contact with one side wall of the gear (68) and can be connected as a whole by suction; A connecting shaft 1 (641) and a connecting shaft 2 (691) are respectively provided between the inner walls at both ends of the swing arm (64) in a rotatable connection. A cam-shaped guide groove (621) is provided on the surface of the gear 3 (62) on one side facing the swing arm (64). The connecting shaft 1 (641) is provided between the inner walls of the guide groove (621) and is in rotatable contact therewith. An L bracket (33) is also installed on the fixing frame (3) on the side where the adjustment mechanism (6) is located. The middle position of the swing arm (64) is provided on the L bracket (33) in a shaft connection manner. The connecting shaft 2 (691) slides between the inner walls of the through hole 2, and a "T"-shaped connecting piece (67) is also rotatably connected to the connecting shaft 2 (691). A connecting shaft 3 (651) rotatably connected to the gear condition (65) is provided on one end of the gear condition (65), the connecting shaft 3 (651) is mounted on the gear 3 (62), and a tooth groove 2 evenly distributed is provided on the bottom wall of the other end of the gear condition (65), the tooth groove 2 and the gear 4 (66) can be meshed for transmission, a guide bar fixed to the gear condition (65) is provided on the top wall, and a connecting member (67) is slidably arranged between the guide bar and the top wall of the gear condition (65); When the output shaft of the linear motor is extended to the farthest position, gear 2 (61) meshes with gear 3 (62), and gear 3 (62) drives connecting shaft 3 (651) to move counterclockwise in the plane in which it is located. At the same time, connecting shaft 1 (641) is continuously moved and adjusted under the action of the guide groove (621), so that connecting shaft 2 (691) is also continuously slid and adjusted in through hole 2, thereby controlling the vertical movement of the lifting plate (69). When the gear condition (65) moves to When the gear condition (65) is in a parallel state with the swing arm (64), the gear condition (65) is in meshing engagement with the gear four (66), and the clip (692) is located below the gear four (66). Then, the gear four (66) moves in a circular motion driven by the gear condition (65). When the gear condition (65) and the gear four (66) are not in meshing engagement, the clip (692) rises with the lifting plate (69) to be clipped in the gap between the two adjacent teeth at the bottom of the gear four (66); When the linear motor drives the limit sleeve (63) to move to contact with the limit sleeve (631), the contact sensor 2 is triggered, and at this time, the gear 2 (61) moves to a position where it meshes with the gear 5 (68), and at this time, the gear 5 (68) and the screw rod 1 (121) rotate synchronously, while the screw rod 1 (121) and the extension shaft (1211) no longer move synchronously; When the gear 2 (61) is meshed with the gear 3 (62), the electromagnet 1 (681) and the screw 1 (121) are in rotational contact and there is no suction between them, the electromagnet 2 (682) and the gear 5 (68) are connected together by suction, and the screw 1 (121) and the extension shaft (1211) are connected together by suction of the electric suction cup (1212); When gear 2 (61) is meshed with gear 5 (68), electromagnet 1 (681) and screw 1 (121) are connected together by suction, electromagnet 2 (682) and gear 5 (68) are in rotational contact and no suction exists, and at this time, screw 1 (121) and extension shaft (1211) are in only rotational contact because the suction of the electric suction cup (1212) disappears.

2. A detection mechanism for metal castings according to claim 1, characterized in that: The workbench (1) is provided with a material-dropping channel (11) extending therethrough, and a mesh plate is installed at the entrance of the material-dropping channel (11). An extension platform (13) connected to the workbench (1) is provided on one side wall of the workbench (1), and a limit strip (131) is installed on the extension platform (13); The transfer mechanism (2) comprises an electric telescopic rod (21), a movable seat (22) and a support plate (23); the electric telescopic rod (21) is mounted on the extension platform (13) and its output shaft passes through a limit strip (131); the movable seat (22) is mounted on the end of the output shaft of the electric telescopic rod (21), and two support plates (23) are arranged on both sides above the movable seat (22) via electric cylinders; the support plates (23) are arc-shaped structures.

3. A detection method for a detection mechanism of a metal casting according to claim 2, characterized in that: The following steps are involved: S1. First, the metal casting to be inspected is sent to the middle of the two clamping mechanisms (5) through the transfer mechanism (2). Then, the clamping blocks (52) on both sides are controlled to clamp and fix the metal casting through the cooperation of the worm gear (55) and the worm sleeve (54). Then, the transfer mechanism (2) is reset. S2. Then, in the initial state, gear 2 (61) meshes with gear 3 (62), and gear 2 (61) is started to rotate, so that gear 3 (62) drives the clamping mechanism (5) to rotate synchronously. At the same time, the key shaft (47) is driven to rotate through the cooperation of synchronous wheel 2 and synchronous belt, and the top block (441) on the impact mechanism (4) continuously elastically impacts the outer surface of the metal casting, so that the oxide scale falls off; During the circular motion of gear 3 (62), the gear condition (65) cooperates with the swing arm (64) and the connecting piece (67) to control the intermittent rotation of gear 4 (66), thereby controlling the rotation of screw 1 (121), and then continuously changing the position of the impact mechanism (4) acting on the metal casting during the impact process, and continuously adjusting the position until the detection is completed; S3. Then, after the detection is completed, when the gear 2 (61) continues to rotate to the same angle as its initial state, the position of the gear 2 (61) is switched so that it moves to mesh with the gear 5 (68). At the same time, the gear 3 (62) is locked, and the gear 5 (68) is connected to the screw 1 (121) as a whole. The screw 1 (121) and the extension shaft (1211) are no longer connected and synchronized. Subsequently, under the action of the gear 2 (61), the impact mechanism (4) is controlled to move to the side close to the adjustment mechanism (6) and reset until it stops after reset. Finally, the gear 2 (61) is reset to the meshing state with the gear 3 (62).

Images