Intelligent non-contact type precise transportation system for precision casting wax mould workshop

Abstract

The invention provides an intelligent non-contact type precise transportation system for a precision casting wax mold workshop. The intelligent non-contact type precise transportation system comprises a mold repairing unit and a welding unit. The first conveyor is arranged on one side, close to the welding unit, of the mold repairing unit; the visual identification unit is erected on the first conveyor, the visual identification unit is arranged on the side of the mold repairing unit, and an arrangement module is arranged between the visual identification unit and the mold repairing unit; the second conveyor is arranged behind the visual identification unit, and a rejecting module is arranged in front of the visual identification unit; and the number of the AGVs is multiple, and the multiple AGVs travel between the mold repairing unit and the welding unit in a reciprocating mode. The multiple AGVs are used for wax mold transportation between the mold repairing unit and the welding unit, non-contact transportation is achieved, the transportation efficiency is high, meanwhile, transportation is stable, and bumping and bumping can be avoided; furthermore, in the transportation process, unqualified and defective wax molds can be removed, and the quality of the wax molds is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of precision casting wax patterns, and in particular to an intelligent contactless precision transportation system for a precision casting wax pattern workshop. Background Art

[0002] The precision casting wax pattern workshop is a special workshop for wax pattern making and wax injection in the precision casting process. There are a mold repair area and a welding area in the precision casting wax pattern workshop, and the wax pattern needs to be transported between the two process areas.

[0003] The traditional way to transport wax models is to manually carry them onto a cart for transportation. This is not only inefficient, but more importantly, it may cause bumps during transportation, resulting in defects in the wax models, which in turn will affect subsequent processing. Summary of the invention

[0004] In order to solve the technical problems of low efficiency and easy collision and damage in traditional transportation of wax molds, the present invention provides an intelligent contactless precision transportation system for precision casting wax mold workshops.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides an intelligent contactless precision transportation system for a precision casting wax mold workshop, comprising a mold repairing unit and a welding unit; further comprising: a first conveyor, the first conveyor being arranged on a side of the mold repairing unit close to the welding unit, the first conveyor being used to transport the wax mold after mold repair; a visual recognition unit, the visual recognition unit being mounted on the first conveyor, and the visual recognition unit being arranged on the side of the mold repairing unit, and a sorting module being arranged between the visual recognition unit and the mold repairing unit; a second conveyor, the second conveyor being arranged behind the visual recognition unit, and a rejection module being arranged in front of the visual recognition unit; an AGV cart, the number of the AGV carts being multiple, and the multiple AGV carts travelling back and forth between the mold repairing unit and the welding unit; a central control unit, the central control unit being electrically connected to the first conveyor, the second conveyor, the visual recognition unit and the rejection module, and the central control unit being wirelessly connected to the multiple AGV carts.

[0007] In this technical solution, multiple AGV carts are used to transport wax models between the mold repair unit and the welding unit, achieving contactless transportation with high transportation efficiency and smooth transportation to avoid bumps and collisions. Furthermore, during the transportation process, unqualified and defective wax models can be removed to ensure the quality of the wax models.

[0008] Preferably, the visual recognition unit includes a carrier, a first detection camera and a second detection camera; the first conveyor passes through the carrier, a first detection camera is arranged directly above the first conveyor in the carrier, and second detection cameras are arranged above the front and rear sides of the first conveyor in the carrier, an exit is opened on the rear side of the carrier, the second conveyor passes through the exit, and the second conveyor extends into the carrier.

[0009] In the present technical solution, the wax model transported to the visual recognition unit is photographed around the wax model by the first detection camera and the second detection camera, and the photographed images are transmitted to the central control unit. The central control unit performs data analysis to identify its shape and check for defects, and can automatically identify qualified and unqualified wax models.

[0010] Preferably, the rejection module comprises a push rod and a push plate; the push rod is fixedly mounted on the carrier, and the push plate is fixedly connected to the output end of the push rod.

[0011] In this technical solution, the push plate is driven to move by the push rod, and the push plate pushes the unqualified wax model to move the wax model to the second conveyor for removal.

[0012] Preferably, a baffle frame is fixedly installed on the top surface of the AGV cart, and a feed and discharge mechanism is arranged above the baffle frame, and the feed and discharge mechanism includes a rectangular frame, rollers, a conveyor belt and a motor; a frame is fixedly installed on the top of both sides of the rectangular frame, and rollers are rotatably installed on the frame, and a conveyor belt is wound around the rollers. A motor is fixedly installed on the frame, and the output shaft end of the motor is fixedly connected to the rollers.

[0013] In this technical solution, after the AGV trolley docks with the tail end of the first conveyor, the qualified wax model is transported away from the tail end through the first conveyor, and the feed and discharge mechanism receives the qualified wax model and moves the wax model to the top surface of the feed and discharge mechanism for carrying.

[0014] Preferably, a plurality of support rollers distributed at equal intervals are arranged on the inner side of the top surface of the conveyor belt, the support rollers are rotatably connected to a support frame, and the support frame is fixedly connected to the rectangular frame.

[0015] In this technical solution, the support roller is used to support the inner side of the top surface of the conveyor belt, thereby ensuring the bearing effect of the conveyor belt and avoiding collapse of the support.

[0016] Preferably, a driving mechanism is provided in the baffle frame, the output end of the driving mechanism is connected to two protective covers, and the protective covers are provided on the top surface of the conveyor belt, and the input end of the driving mechanism is connected to a push plate.

[0017] In the present technical solution, the driving mechanism is used to drive the two protective covers to open or close. In the open state, the wax model can be transported between the two protective covers, and then the two protective covers are closed to protect the wax model.

[0018] Preferably, the driving mechanism comprises a pushing rod, a connecting plate, a first rack, a first gear, a telescopic shaft, a second gear and two second racks, a guide hole is opened on the side wall of the baffle frame, the pushing rod passes through the guide hole, and the pushing rod is connected with the guide hole with a clearance fit, one end of the pushing rod located outside the baffle frame is fixedly connected to the pushing plate, one end of the pushing rod located inside the baffle frame is fixedly connected to the connecting plate, the connecting plate is fixedly connected to one end of the first rack, a spring is sleeved on the pushing rod, the connecting plate is elastically connected to the inner wall of the baffle frame by the spring, the first rack is meshed with the first gear, the first gear and the second gear are both installed on the telescopic shaft, the two sides of the second gear are respectively meshed with the two second racks, the two second racks are fixedly connected to a connecting frame, and the two connecting frames are respectively fixed to the two protective covers.

[0019] In this technical solution, during the docking process between the AGV trolley and the tail end of the first conveyor, the push plate is moved close to the carrier of the first conveyor to provide driving force for the driving mechanism, and the spring is set to provide reset force for the subsequent operation.

[0020] Preferably, the telescopic shaft includes a rotating sleeve and a movable rod; the movable rod is connected with the rotating sleeve with a clearance fit, the first gear is fixedly sleeved on the rotating sleeve, and the bottom end of the rotating sleeve is rotatably connected to the top surface of the AGV trolley, the top of the movable rod is fixedly connected to the middle part of the second gear, a short shaft is fixedly connected to the middle part of the top surface of the second gear, the short shaft is rotatably connected to a fixed frame, the fixed frame is fixed with a guide bar, the guide bar is fixedly installed to the bottom surface of the rectangular frame, the guide bar is slidably connected to a slide groove opened on the top of the second rack, and the cross-section of the guide bar and the cross-section of the slide groove are both "convex" shaped.

[0021] In the technical solution, the telescopic shaft is provided to enable the feeding and discharging mechanism to move up and down.

[0022] Preferably, one end of the first rack away from the connecting disk is fixedly connected to a connecting seat, the connecting seat is connected to a lifting mechanism, and the lifting mechanism is connected to a rectangular frame of the feeding and discharging mechanism.

[0023] In this technical solution, the lifting mechanism is used to drive the feed and discharge mechanism to move up and down to adjust the height, ensuring that when receiving the wax model, the top surface of the feed and discharge mechanism is aligned with the top surface of the first conveyor. After receiving the wax model, it is lowered to lower the overall transportation center of gravity.

[0024] Preferably, the lifting mechanism includes a cylinder, a driving cylinder, a connecting rod, a connecting pipe, a first piston, a second piston and a lifting rod; the number of the cylinders is four, and the four cylinders are respectively fixedly installed at the four corners of the baffle frame, the cylinder is cooperatively connected with the second piston, the top of the second piston is fixedly connected with the lifting rod, the lifting rod passes through the first hole on the top of the cylinder, and the lifting rod is fixedly connected to the bottom surface of the rectangular frame of the feeding and discharging mechanism, the driving cylinder is fixedly installed on the inner side wall of the baffle frame, the driving cylinder is cooperatively connected with the first piston, the first piston is fixedly connected with the connecting rod, the connecting rod passes through the second hole on one side of the driving cylinder, and the connecting rod is fixedly connected to the connecting seat, and one side of the driving cylinder is fixedly connected to the bottom end of the cylinder through a connecting pipe.

[0025] In the technical solution, the lifting mechanism is driven by the connecting seat to drive the connecting rod to move, and the push plate is driven by the push plate to move.

[0026] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0027] The positive and progressive effects of the present invention are:

[0028] The above-proposed intelligent contactless precision transportation system for the precision casting wax pattern workshop, by arranging multiple reciprocating AGV carts between the mold repairing unit and the welding unit, uses the AGV carts to replace manual labor for automatic contactless transportation of wax patterns, thereby improving transportation efficiency, and compared with manual transportation, its speed is stable; further, through the arrangement of the first conveyor, the second conveyor, the visual recognition unit and the rejection module, the wax pattern after mold repair in the mold repairing unit is conveyed to the visual recognition unit through the first conveyor, and the visual recognition unit performs visual recognition detection to determine whether the wax pattern is specifically defective, and the defective wax pattern is rejected by the rejection module, pushed onto the second conveyor, and transported away by the second conveyor, while the qualified wax pattern without defects continues to be transported by the first conveyor to the tail end for discharge, and the AGV cart docks with the tail end of the first conveyor for transportation away, and the above-mentioned , which realizes the removal of wax molds that are unqualified or have defects in mold repair, and maintains the quality of the wax molds when transported to the welding unit; further, a feed-in and feed-out mechanism is set above the AGV trolley, so that the wax mold can enter the AGV trolley after docking with the first conveyor. At the same time, through the setting of protective covers and driving mechanisms, before the wax mold is placed on the AGV trolley, the two protective covers are in an open state. After the wax mold is placed on the feed-in and feed-out mechanism, the two protective covers are closed through the driving mechanism to protect the wax mold and avoid collision with the outside world and damage. At the same time, a lifting mechanism is set. When the AGV trolley is docked with the tail end of the first conveyor, the lifting mechanism aligns the top surface of the feed-in and feed-out mechanism with the top surface of the first conveyor, which is convenient for the AGV trolley to receive the wax mold. After receiving the material, during transportation, the lifting mechanism lowers the feed-in and feed-out mechanism to ensure that the overall transportation center of gravity is low, which is conducive to smooth transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the visual recognition unit and the rejection module of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure above the AGV trolley when the protective cover of the present invention is closed.

[0032] Figure 4 It is a schematic diagram of the structure inside the baffle frame of the present invention.

[0033] Figure 5 For the present invention Figure 4 Schematic diagram of the structure with the A part in the middle enlarged.

[0034] Figure 6 It is a schematic diagram of the installation structure of the second gear and the second rack of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0036] Figure 8 It is a schematic diagram of the distribution structure of the support rollers of the present invention.

[0037] Fig. 9 This is a schematic diagram of the upper structure of the AGV trolley with the protective cover opened according to the present invention.

[0038] Fig.10 It is a schematic diagram of the structure above the AGV trolley after the AGV trolley of the present invention is docked with the first conveyor.

[0039] Description of Reference Numerals

[0040] 1. Mould repair unit;

[0041] 2. First conveyor; 201. Carrier;

[0042] 3. Visual recognition unit; 301. Carrier; 302. First detection camera; 303. Second detection camera; 304. Exit;

[0043] 4. Second conveyor;

[0044] 5. AGV car;

[0045] 6. Arrangement module;

[0046] 7. Rejection module; 701. Push rod; 702. Push plate;

[0047] 8. Welding unit;

[0048] 9. Central control unit;

[0049] 10. Block frame;

[0050] 11. feeding and discharging mechanism; 1101. rectangular frame; 1102. support frame; 1103. roller; 1104. conveyor belt; 1105. motor; 1106. support roller;

[0051] 12. Protective cover;

[0052] 13. Push the plate;

[0053] 14. Driving mechanism; 1401. Push rod; 1402. Connecting plate; 1403. Spring; 1404. Guide hole; 1405. First rack; 1406. Second rack; 1407. Connecting frame; 1408. Rotating sleeve; 1409. Connecting seat; 1410. First gear; 1411. Movable rod; 1412. Second gear; 1413. Guide bar; 1414. Fixed frame;

[0054] 15. Lifting mechanism; 1501. Cylinder; 1502. Driving cylinder; 1503. Connecting rod; 1504. Connecting pipe; 1505. First piston; 1506. Second piston; 1507. Lifting rod;

[0055] 16. Wax model. DETAILED DESCRIPTION

[0056] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0057] like Figure 1-10 As shown, the intelligent contactless precision transportation system for the precision casting wax mold workshop includes a mold repairing unit 1 and a welding unit 8; it also includes: a first conveyor 2, the first conveyor 2 is arranged on the side of the mold repairing unit 1 close to the welding unit 8, and the first conveyor 2 is used to transport the wax mold 16 after mold repair; a visual recognition unit 3, the visual recognition unit 3 is mounted on the first conveyor 2, and the visual recognition unit 3 is arranged on the side of the mold repairing unit 1, and a sorting module 6 is arranged between the visual recognition unit 3 and the mold repairing unit 1; a second conveyor 4, the second conveyor 4 is arranged behind the visual recognition unit 3, and a rejection module 7 is arranged in front of the visual recognition unit 3; an AGV cart 5, the number of the AGV carts 5 is multiple, and the multiple AGV carts 5 travel back and forth between the mold repairing unit 1 and the welding unit 8; a central control unit 9, the central control unit 9 is electrically connected to the first conveyor 2, the second conveyor 4, the visual recognition unit 3 and the rejection module 7, and the central control unit 9 is wirelessly connected to the multiple AGV carts 5.

[0058] like Figure 1 As shown, in the specific implementation, the mold repairing unit 1 has multiple mold repairing stations, and the technicians in the mold repairing stations perform the trimming work of the wax mold 16; after fine manual trimming, the wax mold 16 is placed on the conveyor belt of the first conveyor 2 and transported to the visual recognition unit 3 by the first conveyor 2.

[0059] The sorting module 6 adopts manual sorting. The wax models 16 are conveyed to the sorting module 6. The positions of the wax models 16 on the first conveyor 2 and the distances between the wax models 16 are manually adjusted to prevent two wax models 16 from entering the visual recognition unit 3 at the same time.

[0060] When a single wax model 16 enters the visual recognition unit 3, it is identified and determined by the visual recognition unit 3 whether the wax model 16 is qualified. Unqualified wax models 16 are rejected by the rejection module 7, enter the second conveyor 4, and are then transported away. Qualified wax models 16 are transported and discharged from the tail end by the first conveyor 2.

[0061] The tail end of the first conveyor 2 , the visual recognition unit 3 , and the second conveyor 4 are all provided with displacement sensors to determine whether the wax model 16 enters the tail end of the first conveyor 2 , the visual recognition unit 3 , and the second conveyor 4 .

[0062] The first conveyor 2 and the second conveyor 4 are both driven by servo motors.

[0063] The central control unit 9 is composed of a computer, a controller and a communication module, and provides control for the entire system; the communication module is used for wireless connection of the AGV 5 to send control instructions.

[0064] Furthermore, the AGV trolley 5 is provided with sensors and an intelligent navigation system, and transports the wax model 16 after receiving instructions from the central control unit 9 .

[0065] The welding unit 8 has a plurality of welding stations, each of which is equipped with welding equipment. The welding operation is performed by manually operating the welding equipment. Meanwhile, a welding table is provided at the station for bearing.

[0066] like Figure 2 As shown, as a specific technical solution, the visual recognition unit 3 includes a carrier 301, a first detection camera 302 and a second detection camera 303; the first conveyor 2 runs through the carrier 301, and the first detection camera 302 is arranged directly above the first conveyor 2 in the carrier 301, and the second detection cameras 303 are arranged above the front and rear sides of the first conveyor 2 in the carrier 301, and an exit 304 is opened on the rear side of the carrier 301, the second conveyor 4 passes through the exit 304, and the second conveyor 4 extends into the carrier 301.

[0067] The rejection module 7 includes a push rod 701 and a push plate 702 ; the push rod 701 is fixedly mounted on the carrier 301 , and the output end of the push rod 701 is fixedly connected to the push plate 702 .

[0068] The wax model 16 is transported into the carrier 301 of the visual recognition unit 3, and is photographed by the first detection camera 302 and the second detection camera 303. The photographed images are transmitted to the central control unit 9, and the central control unit 9 analyzes the image data to determine whether the wax model 16 is qualified.

[0069] The rejection module 7 drives the push plate 702 to move through the push rod 701 , and pushes out the unqualified wax mold 16 through the push plate 702 to the top of the second conveyor 4 .

[0070] like Figure 3 , Figure 8 , Fig. 9 as well as Fig.10 As shown, as a specific technical solution, a baffle frame 10 is fixedly installed on the top surface of the AGV trolley 5, and a feed and discharge mechanism 11 is arranged above the baffle frame 10, and the feed and discharge mechanism 11 includes a rectangular frame 1101, a roller 1103, a conveyor belt 1104 and a motor 1105; a frame is fixedly installed on the top of both sides of the rectangular frame 1101, and the frame is rotatably installed with a roller 1103, and a conveyor belt 1104 is wound around the roller 1103. A motor 1105 is fixedly installed on the frame, and the output shaft end of the motor 1105 is fixedly connected to the roller 1103.

[0071] A plurality of support rollers 1106 distributed at equal intervals are disposed on the inner side of the top surface of the conveyor belt 1104 . The support rollers 1106 are rotatably connected to the support frame 1102 , and the support frame 1102 is fixedly connected to the rectangular frame 1101 .

[0072] After the AGV trolley 5 is docked with the tail end of the first conveyor belt, Figure 9-10 As shown, the two protective covers 12 are opened, the conveyor belt 1104 is close to the conveyor belt of the first conveyor 2, and the first conveyor 2 moves the wax model 16 onto the conveyor belt 1104, and the motor 1105 drives the roller 1103 to rotate forward, so that the conveyor belt 1104 moves, and drives the wax model 16 to move above the feed and discharge mechanism 11; and after the AGV trolley 5 transports the wax model 16, the AGV trolley 5 moves to the welding table of the welding unit 8, and drives the roller 1103 to reverse through the motor 1105, so that the conveyor belt 1104 moves, and the wax model 16 is transported to the welding table.

[0073] Among them, the support roller 1106 is provided to support the conveyor belt 1104 and ensure the supporting and bearing effect of the conveyor belt 1104 .

[0074] The motor 1105 is a servo motor.

[0075] like Figure 3 and Fig. 9 As shown, as a specific technical solution, a driving mechanism 14 is arranged in the baffle frame 10, the output end of the driving mechanism 14 is connected to two protective covers 12, and the protective covers 12 are arranged on the top surface of the conveyor belt 1104, and the input end of the driving mechanism 14 is connected to a push plate 13.

[0076] Among them, by pushing the push plate 13, the driving mechanism 14 is powered, thereby driving the protective cover 12 to open; Fig.10 As shown, when the AGV trolley 5 is docked with the first conveyor 2, the AGV trolley 5 moves toward the carrier 201 of the first conveyor 2 (the carrier 201 is used to support the frame 301 above the first conveyor 2), and the push plate 13 is squeezed by the carrier 201; and the AGV trolley 5 is docked with the welding table in the welding unit 8, and the welding table squeezes the push plate 13; the above-mentioned squeezing provides power for the push plate 13, so that the drive does not need to set up an external power source.

[0077] The AGV trolley 5 has a brake structure, which brakes and parks the vehicle after stopping.

[0078] The inner wall of the protective cover 12 is provided with a buffer material, such as silica gel or sponge, to provide protection for the wax model 16 during transportation.

[0079] like Figure 4-6 As shown in the figure, as a specific technical solution, the driving mechanism 14 includes a push rod 1401, a connecting plate 1402, a first rack 1405, a first gear 1410, a telescopic shaft, a second gear 1412 and two second racks 1406. A guide hole 1404 is opened on the side wall of the baffle frame 10. The push rod 1401 passes through the guide hole 1404, and the push rod 1401 is connected with the guide hole 1404 with clearance fit. The end of the push rod 1401 located outside the baffle frame 10 is fixedly connected to the push plate 13, and the end of the push rod 1401 located inside the baffle frame 10 is fixedly connected to the connecting plate 1402. The disk 1402 is fixedly connected to one end of the first rack 1405, and a spring 1403 is sleeved on the push rod 1401. The connecting disk 1402 is elastically connected to the inner wall of the baffle frame 10 through the spring 1403. The first rack 1405 is meshed and connected with the first gear 1410. The first gear 1410 and the second gear 1412 are both installed on the telescopic shaft. The two sides of the second gear 1412 are respectively meshed and connected with two second racks 1406. The two second racks 1406 are each fixedly connected to a connecting frame 1407, and the two connecting frames 1407 are respectively fixed to the two protective covers 12.

[0080] When the push plate 13 is squeezed, the push plate 13 moves toward the outer wall of the baffle frame 10, and the push rod 1401, the connecting plate 1402 and the first rack 1405 move together, and the stretch spring 1403 is stretched. The spring 1403 is stretched and deformed, and the first rack 1405 moves. The meshing transmission between the first rack 1405 and the first gear 1410 causes the telescopic shaft to rotate, and the second gear 1412 on the telescopic shaft rotates together, and the second gear 1412 is meshed with the two second racks 1406, wherein the two second racks 1406 are respectively located on both sides of the second gear 1412, so that the two second racks 1406 move in opposite directions, and the two second racks 1406 drive the two protective covers 12 away from each other through the connecting frame 1407, so that the two protective covers 12 are opened.

[0081] Subsequently, the push plate 13 loses its extrusion, and the elastic force of the spring 1403 causes the push rod 1401, the connecting plate 1402 and the first rack 1405 to reset and move together. Through the meshing transmission of the first rack 1405 and the first gear 1410, and the meshing transmission of the second gear 1412 and the second rack 1406, the two protective covers 12 are brought closer to each other and closed.

[0082] like Figure 4-6 As shown, as a specific technical solution, the telescopic shaft includes a rotating sleeve 1408 and a movable rod 1411; the movable rod 1411 is loosely connected to the rotating sleeve 1408, the first gear 1410 is fixedly sleeved on the rotating sleeve 1408, and the bottom end of the rotating sleeve 1408 is rotatably connected to the top surface of the AGV trolley 5, the top end of the movable rod 1411 is fixedly connected to the middle part of the second gear 1412, a short shaft is fixedly connected to the middle part of the top surface of the second gear 1412, the short shaft is rotatably connected to a fixed frame 1414, the fixed frame 1414 is fixedly connected to a guide bar 1413, the guide bar 1413 is fixedly installed to the bottom surface of the rectangular frame 1101, the guide bar 1413 is slidably connected to a slide groove opened at the top of the second rack 1406, and the cross-section of the guide bar 1413 and the cross-section of the slide groove are both "convex" shaped.

[0083] The guide bar 1413 and the slide groove are provided to guide the movement of the second rack 1406. At the same time, the cross-section adopts a "convex" shape design to ensure that the second rack 1406 can only move along the length direction of the guide bar 1413, thereby preventing the second rack 1406 from falling vertically.

[0084] The guide bar 1413 is fixedly connected to the rectangular frame 1101, and the fixing frame 1414 for installing the second gear 1412 is fixed on the guide bar 1413. Through the setting of the rotating sleeve 1408 and the movable rod 1411 in the telescopic shaft, it is suitable for the feeding and discharging mechanism 11 to be lifted and moved through the lifting mechanism 15.

[0085] The movable rod 1411 adopts a non-round rod structure. While the movable rod 1411 and the rotating sleeve 1408 are axially sliding and retracting, the movable rod 1411 can also rotate together with the rotating sleeve 1408 .

[0086] like Figure 4 and Figure 7 As shown, as a specific technical solution, one end of the first rack 1405 away from the connecting disk 1402 is fixedly connected to a connecting seat 1409, and the connecting seat 1409 is connected to a lifting mechanism 15, and the lifting mechanism 15 is connected to the rectangular frame 1101 of the feeding and discharging mechanism 11.

[0087] The lifting mechanism 15 includes a cylinder 1501, a driving cylinder 1502, a connecting rod 1503, a connecting pipe 1504, a first piston 1505, a second piston 1506 and a lifting rod 1507; the number of the cylinders 1501 is four, and the four cylinders 1501 are respectively fixedly installed at the four corners of the baffle frame 10, the cylinder 1501 is matched with the second piston 1506, the top of the second piston 1506 is fixedly connected with the lifting rod 1507, and the lifting rod 1507 passes through the first hole at the top of the cylinder 1501 , and the lifting rod 1507 is fixedly connected to the bottom surface of the rectangular frame 1101 of the feeding and discharging mechanism 11, the driving cylinder 1502 is fixedly installed on the inner wall of the baffle frame 10, and the driving cylinder 1502 is matched with a first piston 1505, and the first piston 1505 is fixedly connected to a connecting rod 1503, and the connecting rod 1503 passes through the second hole body on one side of the driving cylinder 1502, and the connecting rod 1503 is fixedly connected to the connecting seat 1409, and one side of the driving cylinder 1502 is fixedly connected to the bottom end of the cylinder body 1501 through a connecting pipe 1504.

[0088] Among them, when the push plate 13 is squeezed and moved, the connecting seat 1409 moves with the first rack 1405, and the connecting seat 1409 drives the connecting rod 1503 and the first piston 1505 to move. The first piston 1505 presses the medium in the driving cylinder 1502, and is transported into the cylinder body 1501 through the connecting pipe 1504, providing drive for the second piston 1506. The second piston 1506 and the lifting rod 1507 move upward, so that the feeding and discharging mechanism 11 moves upward and is lifted, thereby aligning the feeding and discharging mechanism 11 with the top surface of the first conveyor 2, or aligning the top surface of the welding table.

[0089] When the push plate 13 is reset, the lifting mechanism 15 is also reset, the connecting rod 1503 and the first piston 1505 move with the connecting seat 1409, the driving cylinder 1502 draws back the medium in the cylinder body 1501 through the connecting pipe, and the second piston 1506 and the lifting rod 1507 move downward, so that the height of the feeding and discharging mechanism 11 is lowered, and the transportation center of gravity is lowered.

[0090] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. An intelligent contactless precision transportation system for a precision casting wax pattern workshop, comprising a pattern repair unit (1) and a welding unit (8); characterized in that: Also includes: A first conveyor (2), the first conveyor (2) being arranged on a side of the mold repairing unit (1) close to the welding unit (8), the first conveyor (2) being used to transport the wax mold (16) after mold repair; A visual recognition unit (3), the visual recognition unit (3) being mounted on the first conveyor (2), and the visual recognition unit (3) being arranged on the side of the mold repairing unit (1), and a sorting module (6) being arranged between the visual recognition unit (3) and the mold repairing unit (1); A second conveyor (4), the second conveyor (4) being arranged behind the visual recognition unit (3), and a rejection module (7) being arranged in front of the visual recognition unit (3); AGV trolley (5), the number of the AGV trolley (5) is multiple, and the multiple AGV trolleys (5) travel back and forth between the mold repairing unit (1) and the welding unit (8); A central control unit (9), wherein the central control unit (9) is electrically connected to the first conveyor (2), the second conveyor (4), the visual recognition unit (3) and the rejection module (7), and the central control unit (9) is wirelessly connected to a plurality of AGV carts (5).

2. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 1, characterized in that: The visual recognition unit (3) includes a carrier (301), a first detection camera (302) and a second detection camera (303); the first conveyor (2) passes through the carrier (301), the first detection camera (302) is arranged directly above the first conveyor (2) in the carrier (301), and the second detection cameras (303) are arranged above the front and rear sides of the first conveyor (2) in the carrier (301); an exit (304) is opened on the rear side of the carrier (301), the second conveyor (4) passes through the exit (304), and the second conveyor (4) extends into the carrier (301).

3. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 2, characterized in that: The rejection module (7) comprises a push rod (701) and a push plate (702); the push rod (701) is fixedly mounted on the carrier (301), and the output end of the push rod (701) is fixedly connected to the push plate (702).

4. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 1, characterized in that: A baffle frame (10) is fixedly mounted on the top surface of the AGV trolley (5), and a material feeding and discharging mechanism (11) is arranged above the baffle frame (10), and the material feeding and discharging mechanism (11) comprises a rectangular frame (1101), a roller (1103), a conveyor belt (1104) and a motor (1105); a frame is fixedly mounted on the top of both sides of the rectangular frame (1101), a roller (1103) is rotatably mounted on the frame, a conveyor belt (1104) is wound around the roller (1103), a motor (1105) is fixedly mounted on the frame, and an output shaft end of the motor (1105) is fixedly connected to the roller (1103).

5. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 4, characterized in that: A plurality of support rollers (1106) distributed at equal intervals are arranged on the inner side of the top surface of the conveyor belt (1104); the support rollers (1106) are rotatably connected to a support frame (1102), and the support frame (1102) is fixedly connected to the rectangular frame (1101).

6. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 5, characterized in that: A driving mechanism (14) is arranged in the baffle frame (10); the output end of the driving mechanism (14) is connected to two protective covers (12), and the protective covers (12) are arranged on the top surface of the conveyor belt (1104); and the input end of the driving mechanism (14) is connected to a push plate (13).

7. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 6, characterized in that: The driving mechanism (14) comprises a pushing rod (1401), a connecting plate (1402), a first rack (1405), a first gear (1410), a telescopic shaft, a second gear (1412) and two second racks (1406); a guide hole (1404) is provided on the side wall of the blocking frame (10); the pushing rod (1401) passes through the guide hole (1404), and the pushing rod (1401) is connected to the guide hole (1404) with a clearance fit; one end of the pushing rod (1401) located outside the blocking frame (10) is fixedly connected to the pushing plate (13); one end of the pushing rod (1401) located inside the blocking frame (10) is fixedly connected to the connecting plate (1402); the connecting plate (140 2) is fixedly connected to one end of the first rack (1405), a spring (1403) is sleeved on the push rod (1401), the connecting plate (1402) is elastically connected to the inner wall of the baffle frame (10) through the spring (1403), the first rack (1405) is meshedly connected to the first gear (1410), the first gear (1410) and the second gear (1412) are both installed on the telescopic shaft, the two sides of the second gear (1412) are respectively meshedly connected to the two second racks (1406), the two second racks (1406) are each fixedly connected to a connecting frame (1407), and the two connecting frames (1407) are respectively fixedly connected to the two protective covers (12).

8. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 7, characterized in that: The telescopic shaft includes a rotating sleeve (1408) and a movable rod (1411); the movable rod (1411) is loosely connected to the rotating sleeve (1408), the first gear (1410) is fixedly sleeved on the rotating sleeve (1408), and the bottom end of the rotating sleeve (1408) is rotatably connected to the top surface of the AGV trolley (5), the top end of the movable rod (1411) is fixedly connected to the middle of the second gear (1412), and the first gear (1410) is fixedly sleeved on the rotating sleeve (1408). A short shaft is fixedly connected to the middle of the top surface of the second gear (1412), and the short shaft is rotatably connected to a fixing frame (1414). The fixing frame (1414) is fixedly connected to a guide bar (1413). The guide bar (1413) is fixedly installed on the bottom surface of the rectangular frame (1101). The guide bar (1413) is slidably connected to a slide groove opened on the top of the second rack (1406), and the cross-sections of the guide bar (1413) and the slide groove are both "convex" shaped.

9. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 7, characterized in that: One end of the first rack (1405) away from the connecting disk (1402) is fixedly connected to a connecting seat (1409), and the connecting seat (1409) is connected to a lifting mechanism (15), and the lifting mechanism (15) is connected to the rectangular frame (1101) of the feeding and discharging mechanism (11).

10. The intelligent contactless precision transportation system for precision casting wax pattern workshop according to claim 9, characterized in that: The lifting mechanism (15) comprises a cylinder (1501), a driving cylinder (1502), a connecting rod (1503), a connecting pipe (1504), a first piston (1505), a second piston (1506) and a lifting rod (1507); the number of the cylinders (1501) is four, and the four cylinders (1501) are respectively fixedly installed at the four corners of the baffle frame (10); the cylinder (1501) is matched with the second piston (1506); the top of the second piston (1506) is fixedly connected with the lifting rod (1507); the lifting rod (1507) passes through the first hole at the top of the cylinder (1501) The driving cylinder (1502) is fixedly mounted on the inner wall of the baffle frame (10), and a first piston (1505) is connected in the driving cylinder (1502). The first piston (1505) is fixedly connected to a connecting rod (1503). The connecting rod (1503) passes through a second hole on one side of the driving cylinder (1502), and the connecting rod (1503) is fixedly connected to a connecting seat (1409). One side of the driving cylinder (1502) is fixedly connected to the bottom end of the cylinder (1501) through a connecting pipe (1504).

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