Forking type transfer trolley and RGV air rail conveying system

Abstract

The utility model discloses a forking type transfer trolley and an RGV empty rail conveying system, the forking type transfer trolley comprises an RGV trolley, a hanging basket and a lifting forking device, the hanging basket is located below the RGV trolley and is fixedly connected with the RGV trolley, the lifting forking device is installed on the hanging basket, and the lifting forking device is connected with the RGV trolley. The lifting forking device comprises a telescopic forking mechanism used for forking workpieces and a first lifting mechanism used for driving the telescopic forking mechanism to move up and down. The forking type transfer trolley is applied to an overhead track, the RGV moves along the overhead track in a reciprocating mode, ground traffic is not affected, the RGV is used for transporting empty tool plates and workpieces, the lifting forking device is used for taking and placing articles, the RGV is started and stopped during acceleration and deceleration, operation is stable, the situation that a conveying line chain and the tool plates are damaged due to friction does not exist, and the working efficiency is improved. The maintenance frequency is less, and the energy consumption is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece transportation in a production line, in particular to a fork-type transfer trolley and an RGV overhead rail conveying system. Background Art

[0002] The existing side-rolling chain conveying line system for sanitary ceramic green bodies is as Figure 1 shown. This conveying system mainly includes: a lifting return plate machine, a double-layer side-rolling chain conveying line, a lifting transfer machine, and a stopper. The working process of this conveying system: The empty tooling plate is lifted by the lifting transfer machine from the lower layer of the double-layer side-rolling chain conveying line and conveyed to the lifting return plate machine, and then lifted and conveyed into the forming workstation by the lifting return plate machine; after the ceramic green body completes the processes of turning over and changing the plate in the forming workstation, it is first conveyed onto the lifting return plate machine, and then transferred and conveyed to the upper layer of the double-layer side-rolling chain conveying line by the lifting transfer machine on the upper layer of the side-rolling chain line body, and then conveyed to the subsequent conveying system by the double-layer side-rolling chain conveying line, and so on in a cycle.

[0003] The above side-rolling chain conveying line system has the following problems: The existing conveying system layout is staggered and reciprocating, occupying a large area and affecting ground traffic; after the overall layout, there are certain limitations in later maintenance and transformation; the existing conveying system contains more equipment and more power, and the manufacturing cost is relatively high; the power consumption of the existing conveying system is relatively high. Figure 1 The entire conveying system is composed of multiple double-layer conveying lines connected end to end. Each line is equipped with 1 power separately for the upper and lower layers, and auxiliary mechanisms such as a lifting transfer machine and a stopper are required at the connection positions. The total power is high, consuming both electricity and gas; the existing conveying system uses side-rolling chain conveying. In actual work, the side-rolling chain conveying line is always powered on and running. When the tooling plate is conveyed on the side-rolling chain and is blocked by the stopper, the side-rolling chain continues to run forward, and the rollers on it rotate under the reaction force because the tooling plate remains in place. The inner ring of the roller and the shaft are in sliding friction, and there is also friction between the outer ring of the roller and the tooling plate. The side-rolling chain and the tooling plate are easily worn. After the side-rolling chain is worn, the side-rolling chain needs to be replaced, and the maintenance frequency is relatively high during the actual production process. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the above technical problems in the related art to a certain extent. For this purpose, the utility model provides a fork-type transfer trolley and an RGV overhead rail conveying system.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] The utility model provides a fork - type transfer trolley, which comprises an RGV trolley, a hanging basket and a lifting and fork - taking device. The hanging basket is located below the RGV trolley and fixedly connected to the RGV trolley. The lifting and fork - taking device is installed on the hanging basket. The lifting and fork - taking device comprises a telescopic fork - taking mechanism for fork - taking workpieces and a first lifting mechanism for driving the telescopic fork - taking mechanism to move up and down. The first lifting mechanism is located below the telescopic fork - taking mechanism.

[0007] When the fork - type transfer trolley of the utility model is applied to an overhead track, the RGV trolley reciprocates along the overhead track without affecting ground traffic. The RGV trolley is used to transport empty tooling plates and workpieces, and the lifting and fork - taking device is used to pick up and place items. After receiving the signal of taking blanks, the RGV trolley forks an empty tooling plate from the original position and transports it to the calling station. At the station position, the process of placing the empty tooling plate is completed first and then the process of taking blanks is completed. Under the condition of meeting the same production beat, the task of post - processing and conveying of the forming workstation is completed with a smaller input cost. The overall power of the conveying system applying this fork - type transfer trolley is lower than that of the side - rolling chain double - layer conveying system, saving energy consumption. The RGV trolley starts and stops with acceleration and deceleration, runs stably, and there is no situation of friction damage between the conveying line chain and the tooling plate, with less maintenance frequency.

[0008] According to some embodiments of the utility model, the telescopic fork - taking mechanism comprises an upper fork body, a middle fork body, a lower fork body, a first chain, a second chain, a first sprocket and a second sprocket. The lower fork body is fixedly connected to the first lifting mechanism. The middle fork body is buckled on the lower fork body. A gear is arranged on the lower fork body, and a rack is arranged at the bottom of the middle fork body. The gear meshes with the rack. The upper fork body is buckled on the middle fork body and is slidably connected to the middle fork body. The first sprocket and the second sprocket are respectively arranged on the front side and the rear side of the middle fork body. One end of the first chain is fixedly connected to the lower fork body, and the other end bypasses the first sprocket from left to right and is fixed on the upper fork body. One end of the second chain is fixedly connected to the lower fork body, and the other end bypasses the second sprocket from right to left and is fixed on the upper fork body.

[0009] According to some embodiments of the utility model, an inner sliding groove is arranged on the inner side of the middle fork body. The inner sliding groove is arranged along the length direction of the middle fork body. A plurality of first guide wheels are arranged on the lower fork body and are arranged along the length direction of the lower fork body. The middle fork body and the lower fork body are slidably connected through the cooperation of the inner sliding groove and the first guide wheels.

[0010] According to some embodiments of the utility model, an outer slide groove is provided on the outer side of the middle fork body, and the outer slide groove is arranged along the length direction of the middle fork body. A plurality of second guide wheels are provided on the upper fork body and the second guide wheels are arranged along the length direction of the upper fork body. The middle fork body and the upper fork body are slidably connected through the cooperation of the outer slide groove and the second guide wheels.

[0011] According to some embodiments of the utility model, a first chain groove and a second chain groove are respectively provided on the front and rear sides of the middle fork body, and the first chain groove and the second chain groove are both arranged along the length direction of the middle fork body, the first chain is embedded in the first chain groove, and the second chain is embedded in the second chain groove.

[0012] According to some embodiments of the utility model, the first lifting mechanism includes a lifting platform, a base frame, a scissors fork, a screw rod, a guide rail and a first motor, the base frame is fixedly connected to the hanging basket, the lifting platform is located above the base frame, the scissors fork is installed between the lifting platform and the base frame, the upper end of the scissors fork is hinged to the lifting platform, the lower ends of the scissors fork are respectively fixed feet and sliding feet, the fixed feet are hinged to the base frame, a slider is slidably connected to the guide rail, the sliding foot is hinged to the slider, one end of the screw rod is connected to the first motor, and the other end is threadedly connected to the slider.

[0013] According to some embodiments of the utility model, the RGV trolley includes a frame, rail wheels, and a second motor for driving the rail wheels to rotate. The frame is fixedly connected to the upper end of the hanging basket. There are at least two rail wheels, which are respectively arranged on the left and right sides of the frame. The rail wheel on the left and the rail wheel on the right are connected by a wheel axle.

[0014] According to some embodiments of the utility model, a reducer is provided at the output end of the second motor, and the reducer is transmission-connected to the rail wheel via a gear pair.

[0015] According to some embodiments of the utility model, the hanging basket includes four hanging rods and a second base frame, the four hanging rods are vertically arranged, the second base frame is horizontally arranged, the upper ends of the four hanging rods are fixedly connected to the RGV trolley, and the lower ends are fixedly connected to the second base frame, and the lifting fork device is installed on the second base frame.

[0016] The utility model also provides an RGV empty rail conveying system, comprising a rail and the fork-type transfer trolley, the rail is an overhead type, and the RGV trolley is rollingly connected to the rail.

[0017] According to some embodiments of the present utility model, the RGV overhead rail conveying system further includes more than one double-layer lifting conveyor. The double-layer lifting conveyors are located beside the rail and are spaced along the length direction of the rail. Each double-layer lifting conveyor corresponds to a workstation. The double-layer lifting conveyor includes a double-layer conveying mechanism and a second lifting mechanism for driving the double-layer conveying mechanism to move up and down. The double-layer conveying mechanism includes an upper conveyor belt and a lower conveyor belt. The lower conveyor belt is located below the upper conveyor belt. One end of the double-layer conveying mechanism can be docked with the workstation, and the other end can be docked with the lifting fork picking device. The telescopic fork picking mechanism can pick up or place workpieces on the upper conveyor belt and the lower conveyor belt respectively.

[0018] According to some embodiments of the present utility model, the RGV overhead rail conveying system further includes a side roller chain double-layer conveying line and a lifting return plate machine. The side roller chain double-layer conveying line and the lifting return plate machine are located beside the rail and close to the rear end of the rail. The lifting return plate machine is located in front of the side roller chain double-layer conveying line. The side roller chain double-layer conveying line includes an upper side roller chain conveying line and a lower side roller chain conveying line. The lifting return plate machine includes a translation conveyor belt that can rotate forward and backward and a third lifting mechanism for driving the translation conveyor belt to move up and down. The up and down movement of the translation conveyor belt can be respectively docked with the upper side roller chain conveying line and the lower side roller chain conveying line. A jacking machine is provided on the upper side roller chain conveying line. The jacking machine is located below the horizontal plane where the upper side roller chain conveying line is located. In the jacking state, the jacking part of the jacking machine is higher than the horizontal plane where the upper side roller chain conveying line is located. The lifting fork picking device can be docked with the jacking machine.

[0019] According to some embodiments of the present utility model, a stopper is provided on the upper side roller chain conveying line. The stopper is located behind the jacking machine.

[0020] According to some embodiments of the present utility model, a current collector is provided on the RGV trolley, and a trolley wire is provided on the rail. The RGV trolley obtains power through the cooperation of the current collector and the trolley wire.

[0021] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a schematic diagram of an existing side roller chain conveying line system for sanitary ceramic green bodies;

[0024] Figure 2 It is the overall structure diagram of the fork-lifting transfer trolley of the present utility model;

[0025] Figure 3 It is the structural schematic diagram of the telescopic fork-lifting mechanism of the present utility model;

[0026] Figure 4 It is the structural schematic diagram of the first lifting mechanism of the present utility model;

[0027] Figure 5 It is the structural schematic diagram of the RGV trolley of the present utility model;

[0028] Figure 6 It is the docking schematic diagram of the fork-lifting transfer trolley and the double-layer lifting conveyor of the present utility model;

[0029] Figure 7 It is the overall structural schematic diagram of the RGV overhead rail conveying system of the present utility model;

[0030] Figure 8 It is the structural schematic diagram of the double-layer lifting conveyor of the present utility model;

[0031] Figure 9 It is the structural schematic diagram of the rear-section conveying system (side-rolling chain double-layer conveying line + lifting return plate machine) of the present utility model.

[0032] Reference numerals: RGV trolley 100, vehicle frame 110, track wheel 120, second motor 130, wheel axle 140, speed reducer 150, gear pair 160, hanging basket 200, lifting fork-lifting device 300, telescopic fork-lifting mechanism 310, upper fork body 311, middle fork body 312, lower fork body 313, first chain 314, first sprocket 315, inner chute 316, first guide wheel 317, outer chute 318, first lifting mechanism 320, lifting platform 321, chassis 322, scissors 323, lead screw 324, guide rail 325, first motor 326, fixed foot 327, sliding foot 328, slider 329, track 400, double-layer lifting conveyor 500, double-layer conveying mechanism 510, upper conveyor belt 511, lower conveyor belt 512, second lifting mechanism 520, side-rolling chain double-layer conveying line 600, upper side-rolling chain conveying line 610, lower side-rolling chain conveying line 620, lifting return plate machine 700, translation conveyor belt 710, third lifting mechanism 720, jacking machine 800, stopper 900, current collector 1000, sliding contact wire 1100, ceramic green body 1200, empty tooling plate 1300. Detailed implementation manners

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] Reference Figure 2 A fork-type transfer trolley includes an RGV trolley 100, a hanging basket 200 and a lifting fork-picking device 300. The hanging basket 200 is located below the RGV trolley 100 and is fixedly connected to the RGV trolley 100. The lifting fork-picking device 300 is installed on the hanging basket 200. The lifting fork-picking device 300 includes a telescopic fork-picking mechanism 310 for forking workpieces and a first lifting mechanism 320 for driving the telescopic fork-picking mechanism 310 to move up and down. The first lifting mechanism 320 is located below the telescopic fork-picking mechanism 310.

[0036] The fork-type transfer trolley of the utility model is applied to the overhead track 400, and the RGV trolley 100 reciprocates along the overhead track 400 without affecting the ground traffic; the RGV trolley 100 is used to transport the empty tooling plate 1300 and the workpiece, and the lifting fork device 300 is used to pick up and place the items. After receiving the blank-taking signal, the RGV trolley 100 forks an empty tooling plate 1300 from the origin and transports it to the call site, and first completes the process of emptying the tooling plate 1300 at the site and then completes the process of taking the blank. Under the same production rhythm, the task of post-processing and transportation of the molding workstation is completed with a smaller investment cost; the overall power of the conveying system using the fork-type transfer trolley is lower than that of the side roller chain double-layer conveying system, which saves energy consumption; the RGV trolley 100 accelerates and decelerates to start and stop, and runs stably. There is no friction damage between the conveyor line chain and the tooling plate, and the maintenance frequency is less.

[0037] In some embodiments of the present invention, referring to Figure 3, the telescopic fork picking mechanism 310 includes an upper fork body 311, a middle fork body 312, a lower fork body 313, a first chain 314, a second chain, a first sprocket 315 and a second sprocket. The lower fork body 313 is fixedly connected to the first lifting mechanism 320. The middle fork body 312 is buckled on the lower fork body 313. A gear is provided on the lower fork body 313, and a rack is provided at the bottom of the middle fork body 312. The gear meshes with the rack. The upper fork body 311 is buckled on the middle fork body 312 and is slidably connected to the middle fork body 312. The first sprocket 315 and the second sprocket are respectively arranged on the front side and the rear side of the middle fork body 312. One end of the first chain 314 is fixedly connected to the lower fork body 313, and the other end passes around the first sprocket 315 from left to right and is fixed on the upper fork body 311. One end of the second chain is fixedly connected to the lower fork body 313, and the other end passes around the second sprocket from right to left and is fixed on the upper fork body 311. The rotation of the gear drives the middle fork body 312 to move in the left-right direction. The length of the chain is fixed, and the two ends of the chain are respectively fixed to the upper fork body 311 and the lower fork body 313. The movement of the middle fork body 312 will drive the movement of the upper fork body 311. The directions of the first chain 314 and the second chain are opposite, respectively responsible for the movement of the upper fork body 311 in the left and right directions, so as to realize the telescopic function.

[0038] In some embodiments of the present invention, an inner sliding groove 316 is provided on the inner side of the middle fork body 312. The inner sliding groove 316 is arranged along the length direction of the middle fork body 312. A plurality of first guide wheels 317 are provided on the lower fork body 313 and the first guide wheels 317 are arranged along the length direction of the lower fork body 313. The middle fork body 312 and the lower fork body 313 are slidably connected through the cooperation of the inner sliding groove 316 and the first guide wheels 317.

[0039] In some embodiments of the present invention, an outer sliding groove 318 is provided on the outer side of the middle fork body 312. The outer sliding groove 318 is arranged along the length direction of the middle fork body 312. A plurality of second guide wheels are provided on the upper fork body 311 and the second guide wheels are arranged along the length direction of the upper fork body 311. The middle fork body 312 and the upper fork body 311 are slidably connected through the cooperation of the outer sliding groove 318 and the second guide wheels.

[0040] In some embodiments of the present invention, a first chain groove and a second chain groove are respectively provided on the front side and the rear side of the middle fork body 312. The first chain groove and the second chain groove are both arranged along the length direction of the middle fork body 312. The first chain 314 is embedded in the first chain groove, and the second chain is embedded in the second chain groove.

[0041] In some embodiments of the present invention, with reference to Figure 4The first lifting mechanism 320 includes a lifting platform 321, a base frame 322, a scissors fork 323, a screw rod 324, a guide rail 325 and a first motor 326. The base frame 322 is fixedly connected to the hanging basket 200. The lifting platform 321 is located above the base frame 322. The scissors fork 323 is installed between the lifting platform 321 and the base frame 322. The upper end of the scissors fork 323 is hinged to the lifting platform 321, and the lower ends of the scissors fork 323 are respectively fixed feet 327 and sliding feet 328. The fixed feet 327 are hinged to the base frame 322. A slider 329 is slidably connected to the guide rail 325. The sliding foot 328 is hinged to the slider 329. One end of the screw rod 324 is connected to the first motor 326, and the other end is threadedly connected to the slider 329. The first motor 326 drives the screw rod 324 to rotate, driving the slider 329 to slide along the guide rail 325, and the sliding foot 328 also moves with the slider 329. The fixed foot 327 at the other end of the scissors fork 323 does not move, thereby completing the opening and closing action of the scissors fork 323, thereby driving the lifting platform 321 to move up and down.

[0042] In some embodiments of the present invention, referring to Figure 5 , the RGV trolley 100 includes a frame 110, a rail wheel 120, and a second motor 130 for driving the rail wheel 120 to rotate. The frame 110 is fixedly connected to the upper end of the hanging basket 200. There are at least two rail wheels 120, which are respectively arranged on the left and right sides of the frame 110. The rail wheel 120 on the left and the rail wheel 120 on the right are connected by a wheel axle 140. Specifically, the frame 110 is a steel structure welded part, which is used for the installation of the main parts of the RGV trolley 100; the frame 110 is provided with a seat bearing for load bearing and positioning and installing the wheel axle 140, and the wheel axle 140 is used for load bearing and installation of the rail wheel 120, and is machined; the rail wheel 120 is a double-ribbed track 400 wheel, which is machined from 45 steel, and is subjected to quenching and tempering treatment as a whole, and the outer edge surface is subjected to quenching and hardening treatment; the second motor 130 is a servo motor, which provides power for the RGV trolley 100.

[0043] In some embodiments of the utility model, a reducer 150 is provided at the output end of the second motor 130, and the reducer 150 is connected to the rail wheel 120 through a gear pair 160. The reducer 150 is a gear reducer 150, which is used to configure the speed ratio and torque of the RGV trolley 100 power system; the gear pair 160 is two spur gears, which transmits the power output of the reducer 150 to the axle 140. The clearance of the gear pair 160 is adjustable, which effectively ensures the running accuracy of the RGV trolley 100, and the frame 110 has a simple structure, low manufacturing difficulty and cost, and only one RGV trolley 100 is needed for one system.

[0044] In some embodiments of the present utility model, the hanging basket 200 includes four suspension rods and a second chassis 322. The four suspension rods are vertically arranged, and the second chassis 322 is horizontally arranged. The upper ends of the four suspension rods are fixedly connected to the RGV cart 100, and the lower ends are fixedly connected to the second chassis 322. The lifting fork picking device 300 is installed on the second chassis 322.

[0045] Referring to Figures 6 - 9 , an RGV overhead rail conveying system includes a rail 400 and a fork-type transfer cart. The rail 400 is of an overhead type, and the RGV cart 100 is in rolling connection with the rail 400. The rail 400 is in an overhead form, and the RGV cart 100 reciprocates along the rail 400 of the RGV overhead rail conveying system. A current collector 1000 is provided on the RGV cart 100, and a trolley wire 1100 is provided on the rail 400. The RGV cart 100 obtains power through the cooperation of the current collector 1000 and the trolley wire 1100. By adopting the power-taking method of the tubular trolley wire 1100, the power-taking head can float up, down, left and right and is multi-point power-taking, which solves the problems such as unstable power-taking caused by the non-parallel installation of the rail 400 and the power-taking pipeline, reduces the installation difficulty, avoids the complicated line layout, is more beautiful, and the power-taking line is placed at a high altitude, effectively reducing the risk of electric shock to personnel. In addition, information interaction configurations such as a code reader and a proximity switch are also provided for path tracking and positioning.

[0046] In some embodiments of the present utility model, the RGV overhead rail conveying system further includes more than one double-layer lifting conveyor 500. The double-layer lifting conveyor 500 is located beside the rail 400 and is spaced along the length direction of the rail 400. Each double-layer lifting conveyor 500 corresponds to a workstation. The double-layer lifting conveyor 500 includes a double-layer conveying mechanism 510 and a second lifting mechanism 520 for driving the double-layer conveying mechanism 510 to move up and down. The double-layer conveying mechanism 510 includes an upper conveyor belt 511 and a lower conveyor belt 512. The lower conveyor belt 512 is located below the upper conveyor belt 511. One end of the double-layer conveying mechanism 510 can be docked with the workstation, and the other end can be docked with the lifting fork picking device 300. The telescopic fork picking mechanism 310 can pick up or place workpieces on the upper conveyor belt 511 and the lower conveyor belt 512 respectively. The upper conveyor belt 511 and the lower conveyor belt 512 can rotate forward and backward and are load-bearing on both sides, that is, both sides of the tooling plate are supported by the conveyor belts on both sides and are suspended in the middle, which is convenient for the lifting fork picking device 300 to pick up and place the tooling plate. The second lifting mechanism 520 uses a cylinder for lifting. The double-layer lifting conveyor 500 can reduce the lifting stroke and improve the production efficiency.

[0047] In some embodiments of the present utility model, the RGV overhead rail conveying system further includes a side-rolling chain double-layer conveying line 600 and a lifting and returning plate machine 700. The side-rolling chain double-layer conveying line 600 and the lifting and returning plate machine 700 are located beside the track 400 and near the rear end of the track 400. The lifting and returning plate machine 700 is located in front of the side-rolling chain double-layer conveying line 600. The side-rolling chain double-layer conveying line 600 includes an upper-layer side-rolling chain conveying line 610 and a lower-layer side-rolling chain conveying line 620. The lifting and returning plate machine 700 includes a translation conveyor belt 710 that can rotate forward and backward and a third lifting mechanism 720 for driving the translation conveyor belt 710 to move up and down. The translation conveyor belt 710 can be respectively docked with the upper-layer side-rolling chain conveying line 610 and the lower-layer side-rolling chain conveying line 620 when moving up and down. An elevating machine 800 is provided on the upper-layer side-rolling chain conveying line 610. The elevating machine 800 is located below the horizontal plane where the upper-layer side-rolling chain conveying line 610 is located. When in the lifting state, the lifting part of the elevating machine 800 is higher than the horizontal plane where the upper-layer side-rolling chain conveying line 610 is located. The lifting fork-taking device 300 can be docked with the elevating machine 800. The side-rolling chain double-layer conveying line 600 serves as the rear-stage conveying system. The lower-layer side-rolling chain conveying line 620 conveys the empty tooling plates 1300. The lifting and returning plate machine 700 receives the empty tooling plates 1300 from the lower-layer side-rolling chain conveying line 620 and ascends and conveys them to the working station of the elevating machine 800. The elevating machine 800 and the fork-lifting transfer cart interact to complete actions such as taking the plate and unloading the billet. When the elevating machine 800 ascends, the tooling plate stays on the elevating machine 800 and is not in contact with the conveying line. After the elevating machine 800 descends, the tooling plate contacts the conveying line and is transported away by the conveying line.

[0048] In some embodiments of the present utility model, a stopper 900 is provided on the upper-layer side-rolling chain conveying line 610. The stopper 900 is located behind the elevating machine 800. The stopper 900 is used to prevent the movement of the tooling plate. When loading the plate and taking the plate, after the empty tooling plate 1300 is lifted to the upper-layer side-rolling chain conveying line 610 by the lifting and returning plate machine 700, it will be conveyed to the working station of the elevating machine 800 along with the conveying line. At this time, the tooling plate is blocked by the stopper 900 and stays. Subsequently, the elevating machine 800 lifts the tooling plate, and the lifting fork-taking device 300 forks and takes away the tooling plate.

[0049] A conveying method based on the above RGV overhead rail conveying system includes:

[0050] The RGV cart 100 forks and takes an empty tooling plate 1300 from the original position. The RGV cart 100 walks along the track 400, conveys the empty tooling plate 1300 to the double-layer lifting conveyor 500 corresponding to each work station, and then forks and places the empty tooling plate 1300 on the lower conveyor belt 512, thus completing the plate loading process;

[0051] The second lifting mechanism 520 drives the double-layer conveying mechanism 510 to move upward so that the lower conveyor belt 512 is docked with the workstation in place. The lower conveyor belt 512 conveys the empty tooling plate 1300 into the workstation. Then, the double-layer conveying mechanism 510 moves downward so that the upper conveyor belt 511 is docked with the workstation. After the workpiece is processed, the tooling plate loaded with the workpiece is conveyed to the upper conveyor belt 511;

[0052] After the RGV cart 100 completes the board loading process, it defaults to dock at the original position point and waits. When a workstation calls to pick up a workpiece, the RGV cart 100 picks up an empty tooling plate 1300 from the original position point and goes to the workstation. After the RGV cart 100 is docked with the double-layer lifting conveyor 500 in place, it forks the empty tooling plate 1300 onto the lower conveyor belt 512, and then forks the tooling plate loaded with the workpiece from the upper conveyor belt 511, conveys it to the unloading position for unloading. The RGV cart 100 then picks up the empty tooling plate 1300 from the original position point and returns to zero for waiting, and so on in a cycle.

[0053] A method for conveying the sanitary ceramic green body 1200 based on the above RGV overhead rail conveying system, including:

[0054] The board loading process after starting up: The lower side roller chain conveyor line 620 conveys the empty tooling plate 1300 to the lifting return plate machine 700, and then through the lifting return plate machine 700 to the jacking machine 800 station (the original position point of the RGV cart 100). The jacking machine 800 jacks up the empty tooling plate 1300, and the RGV cart 100 forks the empty tooling plate 1300. The RGV cart 100 travels along the track 400 and conveys the empty tooling plate 1300 to the double-layer lifting conveyor 500 corresponding to each work site (taking 1 piece each time and sending it to one station each time). The RGV cart 100 forks the empty tooling plate 1300 onto the lower conveyor belt 512, and thus completes the board loading process;

[0055] The second lifting mechanism 520 drives the double-layer conveying mechanism 510 to move upward so that the lower conveyor belt 512 is docked with the workstation in place. The lower conveyor belt 512 conveys the empty tooling plate 1300 into the workstation. Then, the double-layer conveying mechanism 510 moves downward so that the upper conveyor belt 511 is docked with the workstation. After the ceramic green body 1200 completes the blank turning process in the forming workstation, it is conveyed to the upper conveyor belt 511 and calls the RGV cart 100 to pick up the blank;

[0056] After the RGV trolley 100 completes the upper plate process, it defaults to dock at the original position and wait. When a workstation starts to execute the billet turning program and calls for taking workpieces, the RGV trolley 100 takes an empty tooling plate 1300 from the original position and goes to the workstation. After the RGV trolley 100 is docked with the double-layer lifting conveyor 500, it forks the empty tooling plate 1300 onto the lower conveyor belt 512. While the RGV trolley 100 delivers the plate, the billet turning machine in the station conveys the turned ceramic green body 1200 to the upper conveyor belt 511. After the RGV trolley 100 empties the tooling plate 1300, it forks and takes away the tooling plate loaded with the ceramic green body 1200 from the upper conveyor belt 511, and conveys it to the original position. The lifter 800 lifts up, and the RGV trolley 100 unloads the billet onto the upper side roller chain conveyor line 610. The RGV trolley 100 then takes an empty tooling plate 1300 from the original position and returns to zero for waiting, and so on in a cycle.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fork-lift transfer trolley, characterized in that It includes an RGV trolley (100), a hanging basket (200) and a lifting and fork-taking device (300). The hanging basket (200) is located below the RGV trolley (100) and fixedly connected to the RGV trolley (100). The lifting and fork-taking device (300) is installed on the hanging basket (200). The lifting and fork-taking device (300) includes a telescopic fork-taking mechanism (310) for fork-taking workpieces and a first lifting mechanism (320) for driving the telescopic fork-taking mechanism (310) to move up and down. The first lifting mechanism (320) is located below the telescopic fork-taking mechanism (310).

2. The fork-lift transfer trolley according to claim 1, wherein The telescopic fork-taking mechanism (310) includes an upper fork body (311), a middle fork body (312), a lower fork body (313), a first chain (314), a second chain, a first sprocket (315) and a second sprocket. The lower fork body (313) is fixedly connected to the first lifting mechanism (320). The middle fork body (312) is buckled on the lower fork body (313). A gear is provided on the lower fork body (313), and a rack is provided at the bottom of the middle fork body (312). The gear meshes with the rack. The upper fork body (311) is buckled on the middle fork body (312) and is slidably connected to the middle fork body (312). The first sprocket (315) and the second sprocket are respectively arranged on the front side and the rear side of the middle fork body (312). One end of the first chain (314) is fixedly connected to the lower fork body (313), and the other end bypasses the first sprocket (315) from left to right and is fixed on the upper fork body (311). One end of the second chain is fixedly connected to the lower fork body (313), and the other end bypasses the second sprocket from right to left and is fixed on the upper fork body (311).

3. The fork-lift transfer trolley according to claim 2, wherein An inner chute (316) is provided on the inner side of the middle fork body (312). The inner chute (316) is arranged along the length direction of the middle fork body (312). A number of first guide wheels (317) are provided on the lower fork body (313) and the first guide wheels (317) are arranged along the length direction of the lower fork body (313). The middle fork body (312) and the lower fork body (313) are slidably connected through the cooperation of the inner chute (316) and the first guide wheels (317).

4. The fork-lift transfer trolley according to claim 2, wherein An outer chute (318) is provided on the outer side of the middle fork body (312). The outer chute (318) is arranged along the length direction of the middle fork body (312). A number of second guide wheels are provided on the upper fork body (311) and the second guide wheels are arranged along the length direction of the upper fork body (311). The middle fork body (312) and the upper fork body (311) are slidably connected through the cooperation of the outer chute (318) and the second guide wheels.

5. The fork-type transfer trolley according to claim 1, characterized in that, The first lifting mechanism (320) includes a lifting platform (321), a chassis (322), a scissor (323), a lead screw (324), a guide rail (325), and a first motor (326). The chassis (322) is fixedly connected to the hanging basket (200). The lifting platform (321) is located above the chassis (322). The scissor (323) is installed between the lifting platform (321) and the chassis (322). The upper end of the scissor (323) is hinged to the lifting platform (321). The lower ends of the scissor (323) are respectively a fixed foot (327) and a sliding foot (328). The fixed foot (327) is hinged to the chassis (322). A slider (329) is slidably connected to the guide rail (325). The sliding foot (328) is hinged to the slider (329). One end of the lead screw (324) is connected to the first motor (326), and the other end is threadedly connected to the slider (329).

6. The fork-lift transfer trolley according to claim 1, wherein The RGV trolley (100) includes a vehicle frame (110), track wheels (120), and a second motor (130) for driving the rotation of the track wheels (120). The vehicle frame (110) is fixedly connected to the upper end of the hanging basket (200). There are at least two track wheels (120) which are respectively arranged on the left and right sides of the vehicle frame (110). The track wheel (120) on the left side and the track wheel (120) on the right side are connected by a wheel axle (140).

7. An RGV overhead rail conveyor system, characterized in that, It includes a track (400) and the fork-lifting transfer trolley according to any one of claims 1-6. The track (400) is an overhead type. The RGV trolley (100) is in rolling connection with the track (400).

8. The RGV overhead rail conveyor system according to claim 7, wherein The RGV overhead rail conveying system further includes one or more double-layer lifting conveyors (500). The double-layer lifting conveyors (500) are located beside the track (400) and are spaced along the length direction of the track (400). Each double-layer lifting conveyor (500) corresponds to a workstation. The double-layer lifting conveyor (500) includes a double-layer conveying mechanism (510) and a second lifting mechanism (520) for driving the up and down movement of the double-layer conveying mechanism (510). The double-layer conveying mechanism (510) includes an upper conveyor belt (511) and a lower conveyor belt (512). The lower conveyor belt (512) is located below the upper conveyor belt (511). One end of the double-layer conveying mechanism (510) can be docked with the workstation, and the other end can be docked with the lifting and fork-taking device (300). The telescopic fork-taking mechanism (310) can take away or place workpieces on the upper conveyor belt (511) and the lower conveyor belt (512) respectively.

9. The RGV overhead rail conveyor system according to claim 8, wherein, The RGV overhead rail conveying system further includes a side-rolling chain double-layer conveying line (600) and a lifting return plate machine (700). The side-rolling chain double-layer conveying line (600) and the lifting return plate machine (700) are located beside the rail (400) and close to the rear end of the rail (400). The lifting return plate machine (700) is located in front of the side-rolling chain double-layer conveying line (600). The side-rolling chain double-layer conveying line (600) includes an upper-layer side-rolling chain conveying line (610) and a lower-layer side-rolling chain conveying line (620). The lifting return plate machine (700) includes a translation conveyor belt (710) that can rotate forward and backward and a third lifting mechanism (720) for driving the translation conveyor belt (710) to move up and down. The translation conveyor belt (710) can be respectively docked with the upper-layer side-rolling chain conveying line (610) and the lower-layer side-rolling chain conveying line (620) when moving up and down. A lifter (800) is provided on the upper-layer side-rolling chain conveying line (610). The lifter (800) is located below the horizontal plane where the upper-layer side-rolling chain conveying line (610) is located. When in the lifting state, the lifting part of the lifter (800) is higher than the horizontal plane where the upper-layer side-rolling chain conveying line (610) is located. The lifting fork picking device (300) can be docked with the lifter (800).

10. The RGV overhead rail conveyor system according to claim 9, wherein A stopper (900) is provided on the upper-layer side-rolling chain conveying line (610). The stopper (900) is located behind the lifter (800).

Images