A lifting and flipping sorting trolley and an in-warehouse flip tray sorting machine

Abstract

The present invention discloses a lifting and flipping sorting trolley and an in-warehouse flip tray sorting machine. The lifting and flipping sorting trolley includes a trolley body and a flipping part. The trolley body includes a frame, a flip shaft and a limit shaft. The flipping part includes a limit flip plate and a flip tray. A rotating shaft mounting hole is installed on the frame. The flip shaft is installed in the rotating shaft mounting hole and can move up and down. The sorting trolley has two stable states, namely a transportation state and a bag unloading state. In the transportation state, the limit shaft is stuck in the limit groove, and the flip tray can carry the sorted goods; in the bag unloading state, the limit shaft is located at the end of the arc groove away from the limit groove, and the flip tray is tilted toward the bag unloading direction, and cannot carry the sorted goods. The present invention provides a relationship that needs to be satisfied by various dimensions on the flipping part of the sorting trolley, so that the sorting trolley can take into account the transportation stability, the bag unloading success rate and the bag unloading speed, thereby improving the running speed of the sorting machine loop.

Description

Technical Field

[0001] The invention belongs to the technical field of logistics sorting equipment, and in particular relates to a lifting and flipping sorting trolley and an in-warehouse flip tray sorting machine. Background Art

[0002] The main sorting equipment on the market at present is cross-belt sorters, linear sorters, and flip-tray sorters. Among them, the flip-tray sorter has the advantages of compact structure and easy miniaturization, and has the potential to be used for sorting in warehouses with compact space; but most of the existing flip-tray sorters need to install electromagnets on each sorting trolley to control the flipping of the flip tray; this structure requires the power supply and control signals to be input to the moving sorting trolley through the busbar, which increases the complexity of the equipment and reduces the stability of the equipment operation. In addition, most of the existing flip-tray sorters use chain conveyors, which have the disadvantage of high noise.

[0003] The patent application with application number "2020105542721" provides a sorting trolley without a power element, but it adopts a downward-flipping structure and cannot be directly applied to a flip-table sorting machine whose lower bag opening is located on the side of the loop track; in addition, an independently rotating lock needs to be provided in the sorting trolley, which has a relatively complex structure and is prone to jamming during long-term use. Summary of the invention

[0004] The object of the present invention is to provide a lifting and flipping sorting trolley and an in-warehouse flip tray sorting machine.

[0005] In the first aspect, the present invention provides a lifting and flipping sorting trolley, which includes a trolley main body and a flipping part; the trolley main body includes a frame, a flipping shaft and a limit shaft; the flipping part includes a limit flipping plate and a flipping disc; a rotating shaft mounting hole is installed on the frame; the flipping shaft is installed in the rotating shaft mounting hole and can move up and down; the limit shaft is fixed on the frame and is located directly above the flipping shaft; the limit flipping plate is fixedly or rotatably connected to the flipping shaft; a limit guide groove is provided on the limit flipping plate; the limit guide groove includes an arc groove and a limit groove connected together; the arc center of the arc groove is located on the axis of the flipping shaft; the limit groove is located on the end of the arc groove away from the flipping shaft on the side; the limit shaft passes through the limit guide groove and can slide along the arc groove; when the limit shaft enters the limit guide groove, it blocks the limit flipping plate from rotating relative to the frame; the flipping disc is fixed on the top of the limit flipping plate.

[0006] The parameters of the sorting trolley meet the following conditions at the same time:

[0007]

[0008]

[0009] Among them, m1 is the mass of the flip part; L1 is the horizontal distance between the center of mass of the flip part and the axis of the flip shaft when the sorting trolley is in the transport state; m2 is the preset maximum weight of the sorted goods; L2 is the horizontal distance between the inner edge of the flip plate and the axis of the flip shaft when the sorting trolley is in the transport state. L3 is the center distance between the flip axis and the limit axis; θ is the angle between the line connecting the limit support point of the sorting trolley in the transport state to the axis of the limit shaft and the horizontal plane; the limit support point is the connection point between the limit slot and the connection slot close to the inner side of the flip plate; t1 and t2 are two safety factors; the value of the safety factor t1 is 1.5~2.0; the value of the safety factor t2 is 1.1~1.6.

[0010] The sorting trolley has two stable states, namely the transport state and the bag loading state; in the transport state, the limit shaft is stuck in the limit groove, and the flip plate can carry the sorted goods; in the bag loading state, the limit shaft is located at the end of the arc groove away from the limit groove, and the flip plate is tilted toward the bag loading direction and cannot carry the sorted goods.

[0011] A flipping push part is arranged on one side of the position-limiting flip plate away from the bag placing direction; when the flipping push part is pushed upward, the flipping part is driven to rise, and the sorting trolley is switched from the transport state to the bag placing state.

[0012] Preferably, a plurality of horizontally arranged supporting axles are fixed on the frame; both ends of the supporting axles are rotatably connected with supporting wheels.

[0013] Preferably, a plurality of vertically arranged guide axles are fixed on the frame; guide wheels are rotatably connected to the guide axles.

[0014] Preferably, a reset pad is fixed on one side of the limit flip plate close to the lower package direction.

[0015] Preferably, the shaft mounting hole is a waist-shaped hole.

[0016] Preferably, two mounting plates are spaced apart on the frame; the arrangement direction of the two mounting plates is parallel to the moving direction of the sorting trolley; shaft mounting holes are provided on the two mounting plates; the two ends of the flip shaft are respectively arranged in the two shaft mounting holes; the two ends of the limit shaft are respectively fixed to the top of the two mounting plates.

[0017] Preferably, the maximum moving distance of the flip shaft in the rotating shaft mounting hole is greater than or equal to the distance that the limiting shaft enters the arc groove from the limiting groove.

[0018] Preferably, the turnover plate comprises a bearing plate and a limiting edge arranged at the edge of the bearing plate; and no limiting edge is arranged on the side of the bearing plate close to the lower bagging direction.

[0019] Preferably, when the sorting trolley is in the transport state, the center of gravity of the entire flipping portion is located on the side of the flipping axis close to the bag placing direction.

[0020] Preferably, the flip pusher is a flip drive roller rotatably connected to the limit flip plate; when the sorting trolley is in the transport state, the axis of the flip drive roller is horizontally arranged. An elastic layer is arranged on the outer circumference of the flip drive roller.

[0021] Preferably, a downward-flipping limiting plate is arranged on the side of the limiting flip plate close to the lower bag compartment opening. A buffer pad is fixed on the frame. The buffer pad is arranged below the downward-flipping limiting plate. When the sorting trolley is in the bag-unloading state, the buffer pad provides support for the downward-flipping limiting plate, and the downward-flipping limiting plate fits the buffer pad.

[0022] In a second aspect, the present invention provides an in-warehouse tipping sorting machine, which includes an upper packaging platform, a frame, a loop track, a reset assembly, a lower packaging actuator and a lower packaging opening; it also includes the aforementioned sorting trolley; the loop track is fixed on the frame; a plurality of sorting trolleys are arranged end to end on the loop track in sequence and can run in a cycle; an upper packaging platform and a plurality of lower packaging openings are provided on the outer side of the loop track.

[0023] The upper packaging platform comprises an upper packaging bracket, a packaging scanning piece, an upper packaging pulley, an upper packaging transmission belt, a barcode reader and a support plate; two horizontally arranged axles are respectively supported at the two ends of the upper packaging bracket; both ends of the two axles are fixed with upper packaging pulleys; the upper packaging pulleys at the same end of the two axles are connected through the upper packaging transmission belt; the support plate is fixed on the upper packaging bracket and arranged between the two upper packaging transmission belts; a plurality of packaging scanning pieces arranged in sequence and at intervals are arranged between the two upper packaging transmission belts; the two ends of the packaging scanning piece are respectively fixed to the two upper packaging transmission belts; a detection area and an output section are provided on the support plate; the detection area adopts transparent material; the upper packaging bracket is provided with multiple barcode readers; two of the barcode readers are respectively arranged directly above and directly below the detection area; and the remaining barcode readers are arranged on the side of the detection area.

[0024] Each bag unloading opening corresponds to a bag unloading actuator; the sorting trolley is located between the corresponding bag unloading openings and the bag unloading actuators; the bag unloading actuator is used to provide an upward thrust to the bag unloading flipping part of the sorting trolley, so that the sorting trolley switches from the transport state to the bag unloading state.

[0025] The reset assembly includes a reset bar; the reset bar is fixed to the frame and is located outside the loop track; the top surface of the reset bar gradually rises along the moving direction of the sorting trolley on the loop track; the reset bar is used to drive the sorting trolley to return from the bag loading state to the transportation state.

[0026] Preferably, a through-beam photoelectric sensor is provided at the connection between the detection area and the output section; and a grayscale meter is provided above the output section.

[0027] Preferably, there are six barcode readers, namely an upper barcode reader, a lower barcode reader and four side barcode readers; the upper barcode reader is located directly above the detection area and is set downward; the lower barcode reader is located directly below the detection area and is set upward; the four side barcode readers are all higher than the top surface of the support plate and lower than the upper barcode reader; the four side barcode readers are divided into two groups, two in a group; the two groups of side barcode readers are respectively arranged on opposite sides of the detection area; the two side barcode readers in the same group are respectively located at one end of the detection area close to the front section and one end close to the output section; the four side barcode readers are all facing the detection area.

[0028] Preferably, the lower bag actuator comprises a linear drive, a slider and a guide bevel; the slider is slidably connected to the frame; the slider is driven to slide by the linear drive; the guide bevel is fixed to the top of the slider; the guide bevel has two extreme positions driven by the linear drive, namely a working position and a standby position; when the guide bevel is in the working position, the guide bevel is aligned with the lower bag turning part of the sorting trolley in the transport state, and the top surface of the guide bevel gradually rises along the traveling direction of the sorting trolley; when the guide bevel is in the standby position, the guide bevel is staggered with the lower bag turning part of the sorting trolley in the transport state.

[0029] When the sorting trolley in the transport state passes the guide bevel block in the working position, the lower bag flipping part contacts the top surface of the guide bevel block; the guide bevel block pushes the driving roller to rise, so that the limit shaft disengages from the limit groove on the limit flip plate.

[0030] Preferably, the circular track is provided with inner and outer supporting surfaces of equal height, and inner and outer guiding surfaces facing each other; the top edges of the two guiding surfaces are respectively connected to the opposite side edges of the two supporting surfaces; the two supporting surfaces are in contact with different supporting wheels installed on the sorting trolley; the two guiding surfaces are located on both sides of the guiding wheels installed on the sorting trolley.

[0031] Preferably, two adjacent sorting carts are connected by a connecting rod; the top of the guide axle at the rear end of the front sorting cart is connected to one end of the connecting rod through a ball joint; the top of the guide axle at the front end of the rear sorting cart is connected to the other end of the connecting rod through a ball joint.

[0032] Preferably, a first dust-proof sheet is fixed on the frame of each sorting trolley; and a second dust-proof sheet is fixed on the top of each connecting rod.

[0033] The present invention has the following beneficial effects:

[0034] 1. In the present invention, the limiting guide groove formed by the combination of the arc groove and the limiting groove cooperates with the limiting shaft to lock the sorting trolley in the transport state, and unlocks the sorting trolley by pushing the flipping part of the sorting trolley upward to realize automatic unloading of the package; there is no latch structure in the structure, the structure is simple, and it is not easy to get stuck when the state is switched, thereby improving the operating stability of the equipment.

[0035] 2. The present invention provides a relationship that needs to be satisfied among the dimensions of the turning part of the sorting trolley, so that the sorting trolley can take into account the transportation stability, the success rate of unloading packages and the speed of unloading packages, thereby improving the running speed of the sorting machine loop.

[0036] 3. The present invention uses a bag scanning device to move the goods on the bagging platform, and a transparent detection area is set on the bagging platform, so that the barcode on the bottom surface of the goods can be read by a barcode reader below the detection area, realizing six-sided scanning of the goods; the present invention has no shape requirements for the goods, and there is no need to find the barcode before bagging, which significantly improves the bagging efficiency, has low requirements for operators, and is compatible with the use of a robot for bagging. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 It is a side schematic diagram of the present invention.

[0039] Figure 3 It is a structural schematic diagram of the upper packaging platform in the present invention.

[0040] Figure 4 It is a schematic structural diagram of the package scanning component in the present invention.

[0041] Figure 5 It is a schematic diagram of the coordination between the sorting trolley and the loop track in the present invention.

[0042] Figure 6 It is a schematic diagram of the structure of the sorting trolley in the present invention.

[0043] Figure 7 It is a schematic diagram of the structure of the limit flip plate in the present invention.

[0044] Figure 8 It is a schematic diagram of the dimensions of the turning part of the sorting trolley in the present invention.

[0045] Fig. 9 It is a structural schematic diagram of the lower package actuator in the present invention. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] like Figure 1 and2 As shown, an in-warehouse tipping tray sorting machine includes a bag loading platform 1, a frame 2, a sorting trolley 3, a loop track 4, a driving mechanism, a reset component 5, a bag lowering actuator 6 and a bag lowering grid 7.

[0048] like Figure 3 and 4 As shown, the upper packaging platform 1 includes an upper packaging bracket 1-1, a packaging scanning piece 1-2, an upper packaging pulley, an upper packaging transmission belt 1-3, a barcode reader 1-4, a support plate 1-5, a beam photoelectric sensor 1-6 and a grayscale meter 1-7. Two horizontally arranged axles are supported at both ends of the upper packaging bracket 1-1. Both ends of the two axles are fixed with upper packaging pulleys. The upper packaging pulleys at the same end of the two axles are connected through the upper packaging transmission belt 1-3. The upper packaging pulley is a synchronous wheel. The upper packaging transmission belt 1-3 is a synchronous belt. The two upper packaging transmission belts 1-3 are arranged at intervals. The support plate 1-5 is fixed on the upper packaging bracket 1-1. The support plate 1-5 is arranged between the two upper packaging transmission belts 1-3. One of the axles is driven by a motor to control the movement of the upper packaging transmission belt 1-3.

[0049] like Figure 3 and 4 As shown, a plurality of bag sweeping parts 1-2 are arranged between the two upper bag transmission belts 1-3. The two ends of the bag sweeping part 1-2 are respectively fixed to the two upper bag transmission belts 1-3. The length direction of the bag sweeping part 1-2 is parallel to the arrangement direction of the two upper bag transmission belts 1-3. Each bag sweeping part 1-2 is arranged in sequence at equal intervals along the length direction of the upper bag transmission belt 1-3. The bag sweeping part 1-2 includes a padding block 1-2-1, a lever 1-2-2 and a brush 1-2-3. The two padding blocks 1-2-1 are respectively fixed to the two ends on the same side of the lever 1-2-2. The side of the lever 1-2-2 on which the padding blocks 1-2-1 are arranged is provided with a brush 1-2-3. The two padding blocks 1-2-1 are respectively fixed to the outer side surfaces of the two upper bag transmission belts 1-3. The brush 1-2-3 of the bag sweeping part 1-2 located in the upper straight section of the upper bag transmission belt 1-3 is against the support plate 1-5. The goods on the support plate 1-5 can be moved on the support plate 1-5 under the push of the bag sweeping member 1-2, so as to realize the transportation of the goods.

[0050] The support plate 1-5 is composed of a front section 1-5-1, a detection area 1-5-2 and an output section 1-5-3 arranged in sequence. The detection area 1-5-2 is made of transparent glass. A through-beam photoelectric sensor 1-6 is provided at the connection between the detection area 1-5-2 and the output section 1-5-3; the through-beam photoelectric sensor 1-6 is used to detect the size of the goods to prevent the volume of the goods placed on the upper packaging platform from exceeding the detection area during the manual packaging process. There are six barcode readers 1-4, namely an upper barcode reader 1-4, a lower barcode reader 1-4 and four side barcode readers 1-4. The six barcode readers 1-4 are all fixed on the upper packaging bracket 1-1. The upper barcode reader 1-4 is located directly above the detection area 1-5-2 and is set downward, so that it can scan the top surface of the goods on the detection area 1-5-2. The lower barcode reader 1-4 is located directly below the detection area 1-5-2 and is set upward. It can scan the bottom surface of the goods on the detection area 1-5-2 through the transparent detection area 1-5-2. The four side barcode readers 1-4 are all higher than the top surface of the support plate 1-5 and lower than the upper barcode reader 1-4. The four side barcode readers 1-4 are divided into two groups, two in a group; the two groups of side barcode readers 1-4 are respectively set on the left and right sides of the support plate 1-5. The two side barcode readers 1-4 in the same group are respectively located on the side of the detection area 1-5-2 close to the front section 1-5-1 and the side close to the output section 1-5-3. The four side barcode readers 1-4 are all facing the detection area 1-5-2, and cooperate with each other to scan the four sides of the goods: front, back, left, and right. The six barcode readers 1-4 can effectively scan the six sides of the goods. The grayscale meter 1-7 with the detection port facing downward is fixed on the upper package bracket 1-1 and is located directly above the output section 1-5-3.

[0051] The loop track 4 is fixed on the top of the frame 2. The loop track 4 is provided with inner and outer guide surfaces 4-2 facing each other, and inner and outer support surfaces 4-1 arranged at the same height. The top edges of the two guide surfaces 4-2 are connected to the opposite side edges of the two support surfaces 4-1 respectively. The inner guide surface 4-2 and the inner support surface 4-1 are formed by bending a plate. The outer guide surface 4-2 and the outer support surface 4-1 are formed by bending a plate.

[0052] The loop track 4 is divided into an upper bagging section and a sorting section which are connected end to end in a ring. The upper bagging platform 1 is arranged on the side of the upper bagging section. Each lower bagging grid opening 7 is arranged on the outside of the sorting section, and is arranged in sequence along the conveying direction of the sorting trolley 3 on the loop track 4. Each lower bagging grid opening 7 is in the shape of a slide. Each lower bagging grid opening 7 corresponds to a lower bagging actuator 6. The lower bagging actuator 6 is used to drive the flap on the sorting trolley 3 to flip downward, so that the goods carried on the sorting trolley 3 slide into the corresponding lower bagging grid opening 7. The sorting trolley 3 is located between the lower bagging grid opening 7 and the lower bagging actuator 6 which correspond to each other.

[0053] like Figure 5 and 6 As shown, the sorting trolley 3 includes a trolley body and a flipping part. The trolley body includes a frame 3-1, support wheels 3-2, guide wheels 3-3, a flip shaft 3-4 and a limit shaft 3-5. The flipping part includes a limit flipping plate 3-6, a flip driving roller 3-7, a flip plate 3-8 and a reset pad 3-9. The front and rear ends of the frame 3-1 are fixed with a horizontally arranged support axle and a vertically arranged guide axle; both ends of the support axle are rotatably connected to the support wheels 3-2. The bottom end of the guide axle is rotatably connected to the guide wheel 3-3. The support wheels 3-2 at both ends of the support axle are respectively supported on the two support surfaces 4-1 of the loop track 4. The guide wheel 3-3 at the bottom end of the guide axle is set between the two guide surfaces 4-2.

[0054] Two mounting plates are arranged at intervals on the frame 3-1. The arrangement direction of the two mounting plates is parallel to the travel direction of the sorting trolley 3. Two shaft mounting holes 3-10 aligned with each other are provided on the two mounting plates. The shaft mounting hole 3-10 adopts a waist-shaped hole. The length direction of the waist-shaped hole is vertically arranged. The two ends of the flip shaft 3-4 are respectively arranged in the two shaft mounting holes 3-10. Both ends of the flip shaft 3-4 are fixed with retaining rings; the two retaining rings are respectively located on the opposite sides of the two mounting plates, which are used to axially limit the flip shaft 3-4. The shaft mounting hole 3-10 only allows the flip shaft 3-4 to jump up and down in the vertical direction, and does not allow the flip shaft 3-4 to perform other linear motions. The two ends of the limit shaft 3-5 are respectively fixed to the tops of the two mounting plates. The limit shaft 3-5 is located directly above the flip shaft 3-4.

[0055] like Figure 7As shown, the bottom of the limit flip plate 3-6 is fixedly or rotationally connected to the middle of the flip shaft 3-4. A limit guide groove is provided on the limit flip plate 3-6. The limit guide groove includes an arc groove 3-11 and a limit groove 3-12 connected together. The arc center of the arc groove 3-11 is located on the axis of the flip shaft 3-4; the arc length of the arc groove 3-11 is 30°. The limit groove 3-12 is arranged at the end of the arc groove 3-11 close to the lower bag opening 7, and is located on the side of the arc groove 3-11 away from the flip shaft 3-4. The limit shaft 3-5 passes through the limit guide groove. The diameter of the limit shaft 3-5 is less than or equal to the width of the arc groove 3-11, so that the limit shaft 3-5 can slide along the arc groove 3-11. The shape of the limit groove 3-12 corresponds to the cross-sectional shape of the limit shaft 3-5, so that the limit shaft 3-5 can be stuck in the limit groove 3-12, so that the position of the limit flip plate 3-6 remains stable, until the limit flip plate 3-6 is pushed upward, so that the limit shaft 3-5 is disengaged from the limit groove 3-12 and completely enters the arc groove 3-11. The maximum moving distance of the flip shaft 3-4 in the shaft mounting hole 3-10 is greater than or equal to the distance that the limit shaft 3-5 completely enters the arc groove 3-11 from the limit groove 3-12. When the flip shaft 3-4 contacts the bottom of the shaft mounting hole 3-10, the limit shaft 3-5 is stuck in the limit groove 3-12, and the limit flip plate 3-6 cannot rotate.

[0056] The flap 3-8 is fixed on the top of the limit flip plate 3-6. The flap 3-8 includes a bearing plate and a limit edge. The bearing plate is provided with a limit edge except for the edge facing the lower bag opening 7; the limit edge is used to limit the goods in the flap 3-8. The limit flip plate 3-6 is rotatably connected to the side away from the lower bag opening 7 with a flip drive roller 3-7. The flip drive roller 3-7 is used to cooperate with the lower bag actuator 6 to drive the outer side of the flap 3-8 to flip downward. When the flap 3-8 is in the transport state, the axis of the flip drive roller 3-7 is set horizontally. A reset pad 3-9 is fixed to the side of the bottom surface of the flap 3-8 close to the lower bag opening 7. An elastic layer is provided on the outer circumferential surface of the flip drive roller 3-7.

[0057] A downward-flipping limiting plate 3-13 is provided on the side of the limiting flip plate 3-6 close to the lower bag opening 7. A buffer pad 3-14 is fixed on the vehicle frame 3-1. The buffer pad is provided below the downward-flipping limiting plate 3-13. The top surface of the buffer pad is provided horizontally. When the downward-flipping limiting plate 3-13 flips downward along with the limiting flip plate 3-6, the buffer pad provides support for the downward-flipping limiting plate 3-13. When the downward-flipping limiting plate 3-13 contacts the buffer pad, the downward-flipping limiting plate 3-13 and the buffer pad are completely fitted.

[0058] The sorting trolley 3 has two stable states, namely the transport state and the bagging state. In the transport state, the limit shaft 3-5 is inserted into the limit groove 3-12 and remains stable, the flap 3-8 is tilted, and the side of the load-bearing plate close to the lower bagging compartment opening 7 is higher than the side away from the lower bagging compartment opening 7. At this time, the goods on the flap 3-8 are stably supported on the flap 3-8. In the bagging state, the limit shaft 3-5 is located on the arc groove 3-11 at a position away from the limit groove 3-12, the flap 3-8 is tilted toward the side close to the lower bagging compartment opening 7, and the limit flip plate 3-6 is supported by the buffer pad. At this time, the goods on the flap 3-8 slide down. When the flap 3-8 is in the transport state, the support force provided to the limit shaft 3-5 by the limit groove 3-12 remains stable. When the flap 3-8 is in the bagging state, the support force provided to the limit shaft 3-5 by the end of the arc groove 3-11 remains stable.

[0059] The tilting degree of the turning plate on the sorting trolley 3 in the transport state can make the horizontal component of the supporting force of the turning plate on the goods able to provide the centripetal force required when the sorting trolley 3 passes through the curved track section.

[0060] like Figure 8 As shown, the center of mass A of the sorting cart 3 loaded with goods will change within a certain position range due to the different specifications of the goods. Only by ensuring that the overall center of mass of the flip part and the goods is on the side of the flip axis 3-4 axis close to the lower bag opening can the goods automatically slide down after the flip plate is opened; in order to ensure that the vast majority of goods in e-commerce orders (goods with a mass of 0.1-3kg) can slide down smoothly.

[0061] The present invention optimizes the support position of the tray: m1·L1>m2·L2; wherein m1 is the weight of the flip part of the sorting trolley; L1 is the horizontal distance between the center of mass of the flip part and the axis of the flip shaft 3-4 when the sorting trolley is in the transport state; m2 is the preset maximum weight of the sorted goods; L2 is the horizontal distance between the edge of the side of the flip plate 3-8 farthest from the lower bag opening and the axis of the flip shaft 3-4 when the sorting trolley is in the transport state. When this condition is met, even if the gravity of the goods reaching the maximum weight directly acts on the innermost side of the flip plate 3-8; it can still flip down smoothly under the action of gravity. In this embodiment, m1=4.19kg; m2=3kg.

[0062] To ensure that the cargo can slide down quickly, a safety factor t1 greater than 1 is set to obtain the downturn condition requirements Among them, when the value of the safety factor t1 is too small, the flipping speed of the flipping part is insufficient, which is not conducive to improving the loop speed; when the value of the safety factor t1 is too large, the stability of the flipping part is difficult to ensure; therefore, the safety factor t2 is set to 1.5~2.0, and 1.8 is preferred in this embodiment.

[0063] In the transport state, the support force of the limit shaft 3-5 on the limit flip plate 3-6 is called the support force Fs; the torque generated by the gravity of the flip part is offset by the torque generated by the support force Fs on the flip part. The torque M1 generated by the gravity G1 on the flip part of the unloaded sorting trolley 3 is equal to G1·L1; since the limit shaft 3-5 is located directly above the flip shaft; the vertical component F of the support force Fs is s竖 Passing through the axis of the flip shaft, no torque is generated on the limit flip plate 3-6; therefore, the horizontal component F of the support force Fs s平 The torque M2 generated on the limit flip plate 3-6 is Fs·cosθ·L3; L3 is the center distance between the flip axis and the limit axis; θ is the angle between the direction of the support force Fs and the horizontal plane, which is the angle between the line connecting the limit support point of the sorting trolley in the transport state to the axis of the limit axis 3-5 and the horizontal plane; the limit support point is the connection point far away from the lower bag opening of the two connection points between the limit slot and the connection slot. In this embodiment, the limit support point is higher than the axis of the limit axis to avoid the situation where the limit axis is completely embedded in the limit slot and difficult to get out.

[0064] therefore, Therefore, the vertical component of the support force Fs is Due to the vertical component F s竖 Less than gravity G1 to ensure that the stable flip part remains stable; therefore, the following inequality should be satisfied (Right now ).

[0065] Also, because the sorting trolley is tilted when in transport, the goods are located on the pallet at the position farthest from the lower compartment opening; therefore, in most cases, the center of mass of the goods is on the side where the center of mass of the flip part is farthest from the lower compartment opening; therefore, the sorting trolley is stable when empty; it can still remain stable when loaded with goods.

[0066] In order to avoid the risk of instability caused by factors such as turbulence, a safety factor t2 greater than 1 is set to obtain the stability condition requirements Among them, when the value of the safety factor t2 is too large, the flipping part is too stable and the state is difficult to control; therefore, the safety factor t2 is set to 1.1-1.6, and 1.3 is preferably used in this embodiment.

[0067] In this embodiment, a non-essential preferred solution is provided: when the sorting trolley 3 is in the transport state, the center of gravity of the entire flipping part is located on the side of the flipping axis 3-4 close to the lower bag opening 7, so that after the limiting axis 3-5 is separated from the limiting groove 3-12 of the limiting flipping plate 3-6, the turning plate 3-8 can flip downward by itself under the action of gravity, thereby improving the reliability of bag lowering.

[0068] A plurality of sorting carts 3 are arranged end to end on the loop track 4. Two adjacent sorting carts 3 are connected by a connecting rod 8; the top of the guide axle at the rear end of the previous sorting cart 3 is connected to one end of the connecting rod 8 by a ball joint. The top of the guide axle at the front end of the next sorting cart 3 is connected to the other end of the connecting rod 8 by a ball joint. A first dustproof sheet is fixed to the frame 3-1 of each sorting cart 3; a second dustproof sheet is fixed to the top of each connecting rod 8. The first dustproof sheet and the second dustproof sheet are used to cover the top opening of the loop track 4, so that the inside of the loop track and the connection between the sorting cart 3 and the connecting rod 8 remain clean.

[0069] Each sorting trolley 3 is driven by a driving mechanism to circulate along the loop track 4. In this embodiment, the driving mechanism adopts a flat linear motor, specifically a three-phase flat linear asynchronous motor. A horizontal metal plate that cooperates with the flat linear motor is fixed at the bottom of each sorting trolley 3 to achieve non-contact transmission of power.

[0070] like Fig. 9 As shown, the lower package actuator 6 includes a linear drive 6-1, a base 6-2, a slider 6-3 and a guide bevel 6-4. The base 6-2 is fixed on the frame 2. The slider 6-3 is slidably connected to the base 6-2 through a guide rod. The sliding direction of the slider 6-3 is horizontal and perpendicular to the travel direction of the sorting trolley 3. The slider 6-3 is driven by the linear drive 6-1 to slide. In this embodiment, the linear drive 6-1 adopts an electromagnetic push rod.

[0071] The guide bevel 6-4 is fixed on the top of the slider 6-3. The top surface of the guide bevel 6-4 gradually rises along the traveling direction of the sorting trolley 3. Driven by the linear drive 6-1, the guide bevel 6-4 has two extreme positions, namely, a working position and a standby position. When the guide bevel 6-4 is in the working position, the guide bevel 6-4 is aligned with the flip driving roller 3-7 of the sorting trolley 3 in the transport state. When the guide bevel 6-4 is in the standby position, the guide bevel 6-4 is staggered with the flip driving roller 3-7 of the sorting trolley 3 in the transport state.

[0072] When the sorting trolley 3 in the transport state passes the guide bevel block 6-4 in the working position, the flip driving roller 3-7 contacts the top surface of the guide bevel block 6-4; the guide bevel block 6-4 pushes the driving roller to rise, so that the limit shaft 3-5 is disengaged from the limit groove 3-12 on the limit flip plate 3-6, and applies a torque to the limit flip plate 3-6 and the flip plate 3-8 to flip toward the lower bag opening 7, so that the lock of the flip plate 3-8 is released. The flip plate 3-8 flips toward the lower bag opening 7, so that the goods on the flip plate 3-8 slide into the lower bag opening 7.

[0073] The reset assembly 5 includes a support frame and a reset bar. The reset bar is fixed to the curved track portion of the loop track 4 through the support frame and is located on the outer side of the loop track 4. The top surface of the reset bar gradually rises along the traveling direction of the sorting trolley 3 on the loop track 4. The position of the reset bar corresponds to the position of the reset pad 3-9 on the sorting trolley 3. When the sorting trolley 3 in the unloading state passes through the reset bar, the reset bar pushes the flip plate 3-8 to rise through the reset pad 3-9 until the limit shaft 3-5 is re-engaged in the limit groove 3-12, and the sorting trolley 3 returns to the transportation state.

[0074] The working principle of the present invention is as follows:

[0075] Each sorting cart circulates on the circular track; the supplier places the goods in the inspection area 1-5-2 of the upper packaging platform in turn; because the six barcode readers 1-4 can scan the goods in the inspection area 1-5-2 from six sides; the supplier can place the goods at will, which improves the efficiency of upper packaging. Different commodity orders are assigned to different unpacking grids; the goods identified by the upper packaging platform are driven by the scanning bag 1-2 to be sent to the turning plate of one of the sorting carts 3;

[0076] The logistics goods are transported to the target unloading grid by the circular trolley (the position of the target unloading grid is obtained by scanning the barcode on the goods with the barcode reader 1-4 on the upper packaging platform). When it is close to the target unloading grid, the guide bevel 6-4 of the unloading actuator 6 corresponding to the target unloading grid moves to the working position; the flip driving roller 3-7 of the sorting trolley contacts the guide bevel 6-4, driving the limit flip plate 3-6 to lift upward, and the lock of the limit groove on the limit shaft is released. The flip plate flips downward under the push of the flip driving roller 3-7 and its own gravity, so that the sorting trolley is converted to the unloading state; the logistics goods slide into the target unloading grid by themselves; when the sorting trolley in the unloading state reaches the reset component 5, the flip plate flips upward under the action of the reset bar, and returns to the transportation state to prepare for the next feeding cycle.

Claims

1. A lifting and flipping sorting trolley, comprising a trolley body and a flipping part; characterized in that: The trolley body comprises a frame (3-1), a turning shaft (3-4) and a limit shaft (3-5); the turning part comprises a limit turning plate (3-6) and a turning plate (3-8); a rotating shaft mounting hole (3-10) is installed on the frame (3-1); the turning shaft (3-4) is installed in the rotating shaft mounting hole (3-10) and can move up and down; the limit shaft (3-5) is fixed on the frame (3-1) and is located directly above the turning shaft (3-4); the limit turning plate (3-6) is fixedly or rotationally connected to the turning shaft (3-4); a limit turning plate (3-6) is provided with a limit The guide groove comprises a circular arc groove (3-11) and a limiting groove (3-12) connected together; the arc center of the circular arc groove (3-11) is located on the axis of the flip shaft (3-4); the limiting groove (3-12) is located on the side of the end of the circular arc groove (3-11) away from the flip shaft (3-4); the limiting shaft (3-5) passes through the limiting guide groove and can slide along the circular arc groove (3-11); when the limiting shaft (3-5) enters the limiting guide groove, the limiting flip plate (3-6) is blocked from rotating relative to the frame (3-1); the flip plate (3-8) is fixed on the top of the limiting flip plate (3-6); The parameters of the sorting trolley meet the following conditions at the same time: Among them, m1 is the mass of the flip part; L1 is the horizontal distance between the center of mass of the flip part and the axis of the flip shaft (3-4) when the sorting trolley is in the transport state; m2 is the preset maximum weight of the sorted goods; L2 is the horizontal distance between the inner edge of the turning plate (3-8) and the axis of the turning shaft (3-4) when the sorting trolley is in the transport state; L3 is the center distance between the turning shaft (3-4) and the limit shaft (3-5); θ is the angle between the connecting line from the limit support point of the sorting trolley in the transport state to the axis of the limit shaft (3-5) and the horizontal plane; the limit support point is the connection point between the limit groove and the connection groove close to the inner side of the turning plate; t1 and t2 are two safety factors; the value of the safety factor t1 is 1.5 to 2.0; the value of the safety factor t2 is 1.1 to 1.6; The sorting trolley (3) has two stable states, namely a transport state and a bag loading state; in the transport state, the limit shaft (3-5) is inserted into the limit groove (3-12), and the turning plate (3-8) can carry the sorted goods; in the bag loading state, the limit shaft (3-5) is located at the end of the arc groove (3-11) away from the limit groove (3-12), and the turning plate (3-8) is tilted toward the bag loading direction and cannot carry the sorted goods; A flipping push part is arranged on the side of the position-limiting flip plate (3-6) away from the bag placing direction; when the flipping push part is pushed upward, it drives the flip part to rise, thereby switching the sorting trolley (3) from the transport state to the bag placing state.

2. The lifting and flipping sorting trolley according to claim 1 is characterized in that: A plurality of horizontally arranged supporting axles are fixed on the frame (3-1); both ends of the supporting axles are rotatably connected with supporting wheels (3-2).

3. The lifting and flipping sorting trolley according to claim 1 is characterized in that: A plurality of vertically arranged guide axles are fixed on the vehicle frame (3-1); guide wheels (3-3) are rotatably connected to the guide axles.

4. The lifting and flipping sorting trolley according to claim 1 is characterized in that: A reset pad (3-9) is fixed on one side of the position-limiting flip plate (3-6) close to the lower package direction.

5. The lifting and flipping sorting trolley according to claim 1 is characterized in that: The rotating shaft mounting hole (3-10) is a waist-shaped hole.

6. The lifting and flipping sorting trolley according to claim 1 is characterized in that: Two mounting plates are arranged at intervals on the frame (3-1); the arrangement direction of the two mounting plates is parallel to the travel direction of the sorting trolley (3); the two mounting plates are provided with rotating shaft mounting holes (3-10); the two ends of the turning shaft (3-4) are respectively arranged in the two rotating shaft mounting holes (3-10); and the two ends of the limiting shaft (3-5) are respectively fixed to the tops of the two mounting plates.

7. The lifting and flipping sorting trolley according to claim 1 is characterized in that: The maximum moving distance of the flip shaft (3-4) in the rotating shaft installation hole (3-10) is greater than or equal to the distance that the limiting shaft (3-5) enters the arc groove (3-11) from the limiting groove (3-12).

8. The lifting and flipping sorting trolley according to claim 1 is characterized in that: The turning plate (3-8) comprises a bearing plate and a limiting edge arranged at the edge of the bearing plate; the side of the bearing plate close to the lower bagging direction is not provided with a limiting edge.

9. The lifting and flipping sorting trolley according to claim 1, characterized in that: When the sorting trolley (3) is in a transporting state, the center of gravity of the entire turning portion is located on the side of the turning axis (3-4) close to the bag placing direction.

10. A lifting and tilting sorting trolley according to any one of claims 1 to 9, characterized in that: The flipping push part is a flipping driving roller (3-7) rotatably connected to the limit flipping plate (3-6); when the sorting trolley (3) is in a transporting state, the axis of the flipping driving roller (3-7) is arranged horizontally; and an elastic layer is arranged on the outer circumferential surface of the flipping driving roller (3-7).

11. The lifting and flipping sorting trolley according to claim 1, characterized in that: A downward-flipping limiting plate is arranged on one side of the limiting flip plate (3-6) close to the lower bag compartment opening (7); a buffer pad is fixed on the vehicle frame (3-1); the buffer pad is arranged below the downward-flipping limiting plate; when the sorting trolley is in a bag-unloading state, the buffer pad provides support for the downward-flipping limiting plate, and the downward-flipping limiting plate fits the buffer pad.

12. An in-bin tray sorting machine, comprising a bag loading platform (1), a frame (2), a loop track (4), a reset assembly (5), a bag loading actuator (6) and a bag loading opening (7); characterized in that: It also includes the sorting trolley (3) as claimed in claim 10; the loop track (4) is fixed on the frame (2); a plurality of sorting trolleys (3) are sequentially arranged end to end on the loop track (4) and can run in a circular manner; an upper packaging platform (1) and a plurality of lower packaging openings (7) are arranged on the outer side of the loop track (4); The upper packaging platform (1) comprises an upper packaging bracket (1-1), a packaging scanning unit (1-2), an upper packaging pulley, an upper packaging transmission belt (1-3), a barcode reader (1-4) and a support plate (1-5); two horizontally arranged axles are respectively supported at two ends of the upper packaging bracket (1-1); both ends of the two axles are fixed with upper packaging pulleys; the upper packaging pulleys at the same end of the two axles are connected by an upper packaging transmission belt (1-3); the support plate (1-5) is fixed on the upper packaging bracket (1-1) and is arranged between the two upper packaging transmission belts (1-3); a barcode reader (1-4) is arranged between the two upper packaging transmission belts (1-3); There are a plurality of bag scanning pieces (1-2) arranged in sequence and spaced apart; the two ends of the bag scanning piece (1-2) are respectively fixed to two upper bag transmission belts (1-3); the support plate (1-5) is provided with a detection area (1-5-2) and an output section (1-5-3); the detection area (1-5-2) is made of transparent material; the upper bag support (1-1) is provided with a plurality of barcode readers (1-4); two of the barcode readers (1-4) are respectively arranged directly above and directly below the detection area (1-5-2); and the remaining barcode readers (1-4) are arranged on the side of the detection area (1-5-2); Each bag placing opening (7) corresponds to a bag placing actuator (6); the sorting trolley (3) is located between the corresponding bag placing openings (7) and the bag placing actuators (6); the bag placing actuator (6) is used to provide an upward thrust to the bag placing turning part of the sorting trolley (3), so that the sorting trolley (3) switches from a transport state to a bag placing state; The reset assembly (5) comprises a reset bar; the reset bar is fixed to the frame (2) and is located outside the loop track (4); the top surface of the reset bar gradually rises along the moving direction of the sorting trolley (3) on the loop track (4); the reset bar is used to drive the sorting trolley (3) to return from a bag loading state to a transport state.

13. The in-bin tray sorting machine according to claim 12, characterized in that: A counter-radiation photoelectric sensor (1-6) is arranged at the connection between the detection area (1-5-2) and the output section (1-5-3); and a grayscale meter (1-7) is arranged above the output section (1-5-3).

14. The in-bin tilting tray sorting machine according to claim 12, characterized in that: There are six barcode readers (1-4), namely an upper barcode reader (1-4), a lower barcode reader (1-4) and four side barcode readers (1-4); the upper barcode reader (1-4) is located directly above the detection area (1-5-2) and is arranged downward; the lower barcode reader (1-4) is located directly below the detection area (1-5-2) and is arranged upward; the four side barcode readers (1-4) are all higher than the top surface of the support plate (1-5) and lower than the top surface of the support plate (1-5). The upper barcode reader (1-4) comprises two side barcode readers (1-4) each comprising two side barcode readers; the two side barcode readers (1-4) are respectively arranged on opposite sides of the detection area (1-5-2); the two side barcode readers (1-4) in the same group are respectively located at one end of the detection area (1-5-2) close to the front section (1-5-1) and one end close to the output section (1-5-3); the four side barcode readers (1-4) are all facing the detection area (1-5-2).

15. The in-bin tilting tray sorting machine according to claim 12, characterized in that: The lower bag actuator (6) comprises a linear drive (6-1), a slider (6-3) and a guide bevel (6-4); the slider (6-3) is slidably connected to the frame (2); the slider (6-3) is driven by the linear drive (6-1) to slide; the guide bevel (6-4) is fixed on the top of the slider (6-3); the guide bevel (6-4) has two extreme positions under the drive of the linear drive (6-1), namely a working position and a standby position; when the guide bevel (6-4) is in the working position, the guide bevel (6-4) is aligned with the lower bag turning part of the sorting trolley (3) in the transport state, and the top surface of the guide bevel (6-4) gradually rises along the travel direction of the sorting trolley (3); when the guide bevel (6-4) is in the standby position, the guide bevel (6-4) is staggered with the lower bag turning part of the sorting trolley (3) in the transport state; When the sorting trolley (3) in the transport state passes the guide inclined block (6-4) in the working position, the lower bag flipping portion contacts the top surface of the guide inclined block (6-4); the guide inclined block (6-4) pushes the driving roller to rise, so that the limit shaft (3-5) is separated from the limit groove (3-12) on the limit flip plate (3-6).

16. The in-bin tray sorting machine according to claim 12, characterized in that: The loop track (4) is provided with inner and outer supporting surfaces (4-1) of equal height, and inner and outer guiding surfaces (4-2) facing each other; the top edges of the two guiding surfaces (4-2) are respectively connected to the opposite side edges of the two supporting surfaces (4-1); the two supporting surfaces (4-1) are in contact with different supporting wheels installed on the sorting trolley; the two guiding surfaces (4-2) are located on both sides of the guiding wheel (3-3) installed on the sorting trolley.

17. The in-bin tilting tray sorting machine according to claim 12, characterized in that: Two adjacent sorting carts (3) are connected via a connecting rod (8); the top of the guide axle at the rear end of the front sorting cart (3) is connected to one end of the connecting rod (8) via a ball joint; the top of the guide axle at the front end of the rear sorting cart (3) is connected to the other end of the connecting rod (8) via a ball joint.

18. The in-bin tray sorting machine according to claim 12, characterized in that: A first dustproof sheet is fixed on the frame (3-1) of each sorting trolley (3); and a second dustproof sheet is fixed on the top of each connecting rod (8).

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