Tray sorting machine and tray sorting system

Abstract

The present application discloses a tray sorting machine and a tray sorting system, wherein the tray sorting machine of the present application sets a linear motor secondary assembly on the top of the side frame on one side of the tray sorting trolley, and suspends a linear motor primary assembly above the linear motor primary assembly, so that the side frame and / or the cover plate on the side of the linear motor secondary assembly on the tray sorting trolley passing through the linear motor primary assembly can be pressed by setting a first pressing wheel and a second pressing wheel, thereby effectively avoiding the up-and-down jumping of the tray sorting trolley when passing through the linear motor primary assembly, and effectively ensuring the stability and reliability of the linear motor driving, while fully avoiding the collision between the linear motor secondary assembly and the primary assembly, and improving the safety of the equipment operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sorting equipment, in particular to a tray sorting machine and a tray sorting system. BACKGROUND

[0002] The tray sorting machine is a commonly used sorting equipment. It is a device that opens the tray by turning it down to realize automatic package falling by the gravity of the package.

[0003] The patent document with the authorized announcement number CN208036737U discloses a structure of a usable tray sorting machine. In this structure, the tray sorting machine adopts a driving structure composed of a chain wheel and a chain to drive the tray sorting trolley to run along the track. This driving structure is relatively complex, difficult to realize, and is not conducive to improving the running speed of the tray sorting trolley.

[0004] The patent document with the authorized announcement number CN216548160U discloses another structure of a usable tray sorting machine. In this structure, the linear motor primary assembly on the outside of the track cooperates with the secondary plate on the tray sorting trolley to drive the tray sorting trolley to move along the track. A suitable air gap needs to be set between the linear motor primary assembly and the secondary plate to ensure stable driving, and the air gap between the linear motor primary assembly and the secondary plate is usually set between 0.1 millimeter and 0.5 millimeter. However, during the running of the tray sorting trolley along the track, the tray sorting trolley will inevitably swing slightly left and right, so that the secondary plate on the tray sorting trolley cannot guarantee a fixed air gap with the linear motor secondary assembly when passing through the linear motor primary assembly, which to some extent affects the stability of the electromagnetic thrust and is not conducive to the stable operation of the tray handling trolley. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned problems existing in the prior art and provide a tray sorting machine and a tray sorting system.

[0006] The purpose of the present application is achieved by the following technical solutions:

[0007] The tray sorting machine comprises a track and a circle of tray sorting trolleys moving along the track, a linear motor secondary assembly is arranged above the side frame on one side of the tray sorting trolley, a fixed frame is arranged at a set position on the side of the track close to the corresponding side of the linear motor secondary assembly, and a linear motor primary assembly matched with the linear motor secondary assembly for driving the tray sorting trolley to move along the track is arranged on the fixed frame.

[0008] A row of first pressing wheels and / or a row of second pressing wheels are arranged on the fixed frame; when any of the tray sorting trolleys passes through the first pressing wheels, the first limit presses the top surface of the cover plate where the linear motor secondary assembly of the tray sorting trolley is located.

[0009] and / or any of the tray sorting trolleys, when passing through the second pinch roller, the second pinch roller presses on the top surface of the side frame where the linear motor secondary assembly of the tray sorting trolley passing through is located.

[0010] Preferably, the track comprises an inner track and an outer track, the inner track is a groove track with an upward opening, walking wheels and limit wheels are arranged below the inner side frame of the tray sorting trolley, the axis of the limit wheels extends in the vertical direction; the inner side frames of adjacent tray sorting trolleys are connected through a joint bearing; the two ends of the outer side frame of the tray sorting trolley are provided with first buffer pads.

[0011] Preferably, the tray sorting trolley comprises support shafts connected to the two ends of the two side frames and four trays rotatably connected to the two support shafts, the two trays facing each other are a pair of trays that are opened and closed simultaneously, the two side frames are respectively provided with opening and closing control assemblies, the opening and closing control assembly comprises two support pieces, when the two trays of a pair of trays remain in a closed state, each support piece of the opening and closing control assembly outside the pair of trays provides support for one tray of the pair of trays.

[0012] Preferably, the tray is provided with a stop block matching the support piece on the side close to the opening and closing control assembly driving the opening and closing of the tray, the stop block is close to the side of the support shaft around which the tray rotates away.

[0013] Preferably, the opening and closing control assembly comprises a vertical rotating shaft rotatably arranged on the side frame, the vertical rotating shaft is provided with a release arm below the side frame, the release arm is provided with two support pieces, the release arm comprises a force receiving portion extending to the outside of the side frame, the force receiving portion cooperates with the opening and closing driving assembly arranged on the side of the track to drive the release arm to rotate to switch between a release position and a support position, in the release position, the support pieces do not provide support for the pair of trays, in the support position, the support pieces provide support for the pair of trays in a closed state, the release arm is also connected to an elastic piece keeping it in the support position.

[0014] Preferably, the two trays of a pair of trays are connected through a linkage arm connected to the outer ends of the two trays, the inner side of the side frame close to a pair of trays is provided with a second buffer pad, when a pair of trays is in a fully open state, the linkage arm is supported on the second buffer pad.

[0015] Preferably, above the vertical rotating shaft is provided with a limiting piece rotating synchronously with the vertical rotating shaft, when a pair of trays is fully open, the limiting piece presses on the top of the linkage arm or the top of the protrusion on the side of the linkage arm.

[0016] Preferably, two sides of the track are respectively provided with an opening and closing drive assembly matched with the opening and closing control assembly to release the support of the two support members on a tray pair, the opening and closing drive assembly comprises a driving wheel with an axis extending in a vertical direction, the driving wheel is connected with a lifting driver to adjust the driving wheel between a first height and a second height, at the first height, the driving wheel is matched with a release arm of the opening and closing control assembly in height, and at the second height, the driving wheel is above or below the release arm.

[0017] Preferably, the track is provided with a reset assembly for switching the tray of the tray sorting trolley passing through the track from an open state to a closed state, and the track is provided with an abnormal unloading assembly upstream of the reset assembly and close to the reset assembly, the abnormal unloading assembly is used to open the tray of the tray sorting trolley passing through the track.

[0018] The tray sorting system comprises the tray sorting machine according to any one of the above.

[0019] The advantages of the technical scheme of the present application mainly include:

[0020] The present application sets the secondary assembly of the linear motor at the top of the side frame, and suspends the primary assembly of the linear motor above the primary assembly of the linear motor, so that the first and second compression wheels are arranged on the side of the side frame and / or the cover plate on the side of the secondary assembly of the linear motor on the tray sorting trolley passing through the primary assembly of the linear motor, thereby effectively avoiding the up and down jumping of the tray sorting trolley when passing through the primary assembly of the linear motor, and effectively ensuring the stability and reliability of the linear motor drive, while fully avoiding the collision between the secondary assembly and the primary assembly of the linear motor, and improving the safety of the equipment operation.

[0021] The opening and closing control assembly of the present application can simultaneously support two trays, thereby effectively improving the carrying capacity of the trays, and being beneficial to the sorting of heavier goods, and at the same time, effectively ensuring that the two trays of the tray pair remain flush.

[0022] The tray pair of the present application is connected by a linkage arm, so that a second buffer pad can be used to better provide shock absorption for the linkage arm when the tray is opened, thereby effectively reducing the vibration of the tray pair when it is opened, and being beneficial to prolonging the service life. Further, the linkage arm is limited by the second buffer pad in cooperation with the limiting piece arranged on the opening and closing control assembly and rotating synchronously with the support member, thereby effectively avoiding the problem of continuous shaking of the tray pair during operation after opening, and being beneficial to prolonging the service life of the mechanical structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1is a top view of the tray sorting machine of the present application, in which the trays of each tray sorting trolley are in an open state;

[0024] Figure 2 is a top view of the tray sorting machine of the present application, in which the trays of each tray sorting trolley are in an open state;

[0025] Figure 3 is a perspective view of the tray sorting trolley of the present application;

[0026] Figure 4 is a bottom perspective view of the tray sorting trolley of the present application, in which the cover plate and the linear motor secondary assembly are hidden;

[0027] Figure 5 is a side perspective view of the tray sorting trolley of the present application, in which the cover plate and the linear motor secondary assembly are hidden;

[0028] Figure 6 is a schematic view of the opening and closing driving assembly of the present application;

[0029] Figure 7 is a side view of the tray sorting machine of the present application, in which the tray sorting trolley is hidden;

[0030] Figure 8 is a partial sectional view of the tray sorting machine of the present application;

[0031] Figure 9 is Figure 8 is a partial enlarged view of

[0032] Figure 10 is a side view of the tray sorting machine of the present application, in which the tray sorting trolley is hidden. DETAILED DESCRIPTION

[0033] The purposes, advantages and features of the present application will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of application of the technical solutions of the present application, and any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection claimed by the present application.

[0034] In the description of the schemes, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance.

[0035] Example 1

[0036] The tray sorting machine disclosed in the present application will be described below in conjunction with the accompanying drawings, in which Figure 1 As shown in the drawings, it comprises a track 100 and a circle of tray sorting trolleys 200 movably arranged on the track 100.

[0037] As shown in the drawings, the track 100 comprises an inner track 110 and an outer track 120, which are arranged concentrically and can be designed in regular shapes such as waist shape or round rectangular shape according to needs, of course, they can also be designed in other irregular shapes, which are not limited here. Figure 2 The specific structure of the inner track 110 and the outer track 120 can be designed according to the structure of the tray sorting trolley 200, preferably, the inner track 110 is a groove-shaped track with the opening upward, and the outer track 120 is a rectangular track with the rectangular cross section.

[0038] As shown in the drawings, the tray sorting trolley 200 comprises walking wheels 230 and limit wheels 240 moving in the inner track 110 and walking wheels 230 moving on the outer track 120. The axis of the limit wheel 240 extends in the vertical direction, and the axis of the walking wheel in the inner track extends horizontally.

[0039] Figure 3 Specifically, the tray sorting trolley 200 comprises a frame 210, which comprises two side frames 211 and support shafts 212 connected at both ends of the two side frames 211. The specific shape of each side frame 211 can be designed according to needs, preferably a U-shaped groove, and the notch of the U-shaped groove is arranged downward. At least one vertical shaft 213 is arranged on the U-shaped groove, preferably two vertical shafts 213 are arranged close to both ends of the side frame 211. A wheel seat 220 is pivotally connected to each vertical shaft 213 below the side frame 211, and a walking wheel 230 is arranged on the wheel seat 220. At the same time, when the tray sorting trolley 200 is located on the track 100, the side close to the inner track 110 is defined as the inner side, and the side close to the outer track 120 is defined as the outer side. The lower end of each vertical shaft 213 of the side frame 211 on the inner side is coaxially connected with a limit wheel 240.

[0040] Specifically, the tray sorting trolley 200 comprises a frame 210, which comprises two side frames 211 and support shafts 212 connected at both ends of the two side frames 211. The specific shape of each side frame 211 can be designed according to needs, preferably a U-shaped groove, and the notch of the U-shaped groove is arranged downward. At least one vertical shaft 213 is arranged on the U-shaped groove, preferably two vertical shafts 213 are arranged close to both ends of the side frame 211. A wheel seat 220 is pivotally connected to each vertical shaft 213 below the side frame 211, and a walking wheel 230 is arranged on the wheel seat 220. At the same time, when the tray sorting trolley 200 is located on the track 100, the side close to the inner track 110 is defined as the inner side, and the side close to the outer track 120 is defined as the outer side. The lower end of each vertical shaft 213 of the side frame 211 on the inner side is coaxially connected with a limit wheel 240.

[0041] ​Since the support shaft 212 needs to be installed with the tray 250 rotating relative to it, it cannot be used for the connection of adjacent tray sorting trolleys 200, therefore, in order to facilitate the connection of adjacent tray sorting trolleys 200 and the smooth turning of the tray sorting trolley 200 at the turning place of the track 100, in the embodiment, the side frame 211 inside the adjacent tray sorting trolley 200 is connected through the joint bearing 214, specifically, the upper end of the two vertical shafts 213 of the side frame 211 on one side of each tray sorting trolley 200 is connected with the joint bearing 214 respectively, the joint bearing 214 is a rod end joint bearing, and the joint bearings 214 of adjacent tray sorting trolleys 200 are connected through connecting rods. Since the side frames 211 on the outer side of the adjacent tray sorting trolleys 200 are not physically connected between the opposite ends, in order to avoid the collision of adjacent tray sorting trolleys 200 after passing through the turning section of the track 100, a first buffer pad 215 is arranged at the two ends of the frame 210 on the outer side of each tray sorting trolley 200 respectively, the first buffer pad 215 is fixed on the L-shaped mounting plate 216 at the two ends of the side frame 211 on the outer side, when the tray sorting trolley 200 is located in the straight section of the track 100, the first buffer pads 215 at the ends of the side frames 211 on the outer side of the adjacent tray sorting trolleys 200 abut, which can effectively ensure that the adjacent tray sorting trolleys 200 can maintain a closely connected state when they are in the straight section of the track 100, at the same time, when in the turning section, the tray sorting trolleys 200 can turn smoothly and after turning, the tray sorting trolleys 200 will not collide violently.

[0042] As shown in the accompanying drawings Figure 3As shown, four trays 250 are provided on the frame 210 and can be opened and closed relative to the frame 210, and two trays 250 are provided on each support shaft 212 and can be rotated through bearings. The tray 250 includes a sleeve 251 connected to the support shaft 212 through bearings, two side plates 252 are connected to the two ends of the sleeve 251, and a tray plate 253 is connected between the two side plates 252. The tray plate 253 has a through hole, and the outer end of each sleeve 251 (the end of the sleeve 251 close to the side frame 211) is provided with a rocker arm 254. The rocker arms 254 on the two sleeves 251 on the same support shaft 212 are located correspondingly, and the two trays 250 on the two support shafts 212 are located opposite to each other and form a tray pair that can be opened and closed at the same time. The extension directions of the two rocker arms 254 connected by the two sleeves 251 of a tray pair are perpendicular or substantially perpendicular, and preferably, the included angle between the extension directions of the two rocker arms 254 connected by the two sleeves 251 of a tray pair is between 85° and 95°. The rocker arms 254 at the outer ends of the two trays 250 of a tray pair are connected through a linkage arm 260, the two ends of the linkage arm 260 are pivotally connected to the rocker arms 254 on the outer sides of the two trays 250, and the linkage arm 260 includes a first rod portion 261 and a second rod portion 262, and the first rod portion 261 and the second rod portion 262 form an obtuse angle of not less than 135°. The linkage arm 260 can be located on the outer sides of the two side frames 211, or can be arranged on the inner sides of the two side frames 211, and preferably, the linkage arm 260 is arranged on the inner sides of the two side frames 211.

[0043] As shown in the accompanying drawings, Figure 3 Among the two trays 250 of a tray pair, the back of the forward tray 250 is provided with a closing drive 270, which can be a reset roller arranged on the back of the tray 250 on the side close to the running direction. The axis of the reset roller is parallel to the support shaft 212, and the reset roller is located on the side of the back of the forward tray 250 away from the support shaft 212. Of course, the closing drive 270 can also be other feasible structures, such as a universal ball, etc.

[0044] When the trays 250 are not supported, they will remain in the open state under the action of gravity, therefore, as shown in the accompanying drawings, Figure 4As shown, the opening and closing control assembly 280 is arranged on each side frame 211 of the frame 210, and is used to limit the trays 250 in the closed state to prevent them from being opened downward under the action of gravity. In order to more fully support each tray 250, each opening and closing control assembly 280 includes two support members 281, and when the two trays 250 of a tray pair are in the closed state, each support member 281 of the opening and closing control assembly 280 on the outside of the tray pair supports one tray 250 of the tray pair.

[0045] In this way, the two trays 250 of a tray pair can be supported by one opening and closing control assembly 280, which not only helps to improve the carrying capacity of a single tray 250, thereby meeting the sorting needs of heavier goods, but also effectively ensures that the two trays 250 of a tray pair remain flush, and effectively reduces the shear force on the bolts connecting the linkage arms 260, the rocker arms 254, and the sleeves 251, as well as the pivot shafts, thereby helping to ensure the safety of the structure and improve the service life.

[0046] As shown in the accompanying drawings, Figure 4 As shown, the opening and closing control assembly 280 includes a vertical rotating shaft 282 rotatably arranged on the side frame 211, which is located near the middle of the length of the side frame 211. The relative rotating connection structure between the vertical rotating shaft 282 and the side frame 211 can adopt a known feasible structure, for example, the vertical rotating shaft 282 can be rotatably connected to the side frame 211 through a bearing or a shaft sleeve fixed on the side frame 211. The vertical rotating shaft 282 is provided with a release arm 283 below the side frame 211. The shape of the release arm 283 can be designed as needed, and preferably, the release arm 283 is generally L-shaped, including a first portion 284 extending horizontally and a second portion 285. The vertical rotating shaft 282 is connected to the first portion 284 near the intersection of the first portion 284 and the second portion 285. The second portion 285 of the release arm 283 is provided with two support members 281. Specifically, the side of the second portion 285 away from the first portion is provided with a mounting block 286, and the outside of the mounting block 286 is mounted with two support members 281. The support members 281 can be blocks or universal balls, and preferably, the support members 281 are support rollers, and the axis of the support rollers extends horizontally and is perpendicular to the length direction of the second portion 285.

[0047] The release arm 283 rotates horizontally between a release position and a supporting position. When the release arm 283 is in the supporting position, the two supporting members 281 support the two trays 250 in the closed state, and at this time, the second part 285 protrudes to the inner side of the side frame 211, and the extension direction of the second part 285 is perpendicular or substantially perpendicular to the length direction of the side frame 211, and the axis of the supporting roller is perpendicular or substantially perpendicular to the length direction of the side frame 211. When the release arm 283 is in the release position, the two supporting members 281 move to the outer side of the trays 250, so that the two trays 250 of a tray pair can be simultaneously rotated downward.

[0048] In order to better match the supporting member 281 and avoid the supporting member 281 affecting the synchronous downward rotation of the two trays 250, a stop block 255 matched with the supporting member 281 is arranged on the side of the tray 250 close to the opening and closing control assembly 280 driving the opening and closing thereof, and the stop block 255 is close to the side of the supporting shaft 212 around which the tray 250 rotates away from it, so that when the tray 250 is closed, the stop block 255 is arranged on the supporting member 281.

[0049] When the support member 281 is supported under the closed tray 250, the first portion 284 can extend to the outside of the side frame 211, and the portion extending to the outside of the side frame 211 serves as a force-bearing part 287. The force-bearing part 287 cooperates with the opening and closing drive assembly 300 to drive the release arm 283 to rotate so that the support member 281 moves from under the tray 250 or the stop 255 to the outside of the tray 250 or the stop 255, thereby enabling the tray 250 to rotate and open in opposite directions under its own weight and the weight of the goods on it. The side of the force-bearing part 287 facing the running direction is a contact surface 288 that cooperates with the opening and closing drive assembly 300. The contact surface 288 is an inclined surface, an arc surface, or a curved surface. So when the contact surface is blocked by the opening and closing drive assembly 300, the release arm 283 can rotate to release the support member 281 from supporting the tray 250 or the stop block 255. And when the release arm is driven to rotate to the release position, the contact surface can still maintain contact with the opening and closing drive for a period of time, so that the release arm can stay in the release position for a period of time before resetting. When the release arm 283 is blocked by the opening and closing drive assembly 300 and rotates to a certain angle, the contact surface 288 of the release arm 283 is no longer blocked by the opening and closing drive assembly 300. At this time, it is necessary for the release arm 283 to automatically rotate in the opposite direction to reset, that is, to return to a state where the extension direction of the second part 285 is parallel or approximately parallel to the length direction of the side frame 211. Correspondingly, the release arm 283 is also connected to an elastic element 290 to keep it in the support position. That is, after the release arm 283 rotates to the release position, the elastic element 290 can make the release arm return to the support position. The elastic element 290 can be a tension spring connected between the release arm 283 and the side frame 211, or it can be a torsion spring sleeved on the outer periphery of the vertical rotating shaft 282, with one end connected to the abutment block on the release arm 283 and the other end connected to the side frame 211. The specific design is required and is not limited here.

[0050] Furthermore, when a pair of pallets is fully open, the two pallets 250 will vibrate due to the inertia of opening, which is detrimental to the mechanical life of the pallets 250. Therefore, to solve this problem, as shown in the attached... Figure 5 As shown, a second buffer pad 217 is provided on the inner side of the side frame 211 of each pallet pair. When a pallet pair is in a fully open state, the linkage arm 260 is supported on the second buffer pad 217, and when the pallet 250 is opened, the linkage arm 260 will fall on the second buffer pad 217 to absorb shock, thereby effectively reducing the vibration of the pallet 250.

[0051] As attached Figure 5As shown, in order to ensure that the second buffer pad 217 can have a reliable support effect, a fixing plate 218 is provided on the inner side of the side frame 211. The second buffer pad 217 is a cuboid buffer piece fitted on the fixing plate 218. Its specific material can be selected as needed. In order to ensure the reliability of the connection between the second buffer pad 217 and the fixing plate 218, the second buffer pad 217 is connected to the fixing plate 218 by screws or bolts passing through it from below.

[0052] Furthermore, since the vertical rotating shaft 282 can automatically rotate and reset, in order to better limit the vibration that occurs after the tray 250 is opened, as shown in the attached... Figure 5 As shown, a limiting member 289 is provided above the vertical rotating shaft 282 and rotates synchronously with it. When one of the tray pairs is opened, the limiting member 289 presses against the top of the linkage arm 260 or the top of the protrusion 261 on the side of the linkage arm 260. Specifically, the upper end of the vertical rotating shaft 282 is connected to a mounting plate, and the limiting member 289 is provided on the mounting plate. The limiting member 289 is, for example, a pressure wheel or a block, preferably a pressure wheel, and the axis of the pressure wheel is parallel to the axis of the supporting roller. The protrusion 261 is preferably provided on the side of the linkage arm 260 facing the side frame 211.

[0053] As attached Figure 1 As shown, in order to enable the pallet sorting trolley 200 to open the pallet 250 for sorting at different positions, a set of opening and closing drive components 300 are respectively provided at the inner track 110 and the outer track 120 of the track 100. The positions of the opening and closing drive components 300 at the inner track 110 and the outer track 120 are one-to-one. The specific structure of the opening and closing drive components 300 can be designed as needed.

[0054] In this embodiment, as shown in the appendix Figure 6 As shown, the opening / closing drive assembly 300 includes a drive wheel 310 with its axis extending vertically. The drive wheel 310 is connected to a lifting actuator 320 that adjusts it between a first height and a second height. At the first height, the drive wheel 310 is height-adapted to the release arm 283 of the opening / closing control assembly 280; at the second height, the drive wheel 310 is located above or below the release arm 283. The lifting actuator 320 may be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0055] And, in order to better protect the lifting driver 320 while ensuring the position accuracy of the driving wheel 310, the driving wheel 310 is arranged on a lifting plate 330, the lifting plate 330 is movably connected to a guide column 340 through a linear bearing 360 or a guide sleeve fixed thereon, and the guide column 340 is fixed to a mounting frame 350 on the side of the track 100.

[0056] The tray sorting trolley 200 needs to move to different positions along the track 100 to achieve sorting. In order to reliably drive the tray sorting trolley 200, as shown in Figure 3 , attached Figure 7 , attached Figure 9 As shown, a linear motor secondary assembly 201 is arranged above the side frame 211 on one side of the tray sorting trolley 200, and a fixed frame 400 is arranged on the corresponding side of the track 100, and a linear motor primary assembly 500 is arranged on the fixed frame 400 and matched with the linear motor secondary assembly 201. Preferably, the linear motor secondary assembly 201 is arranged on the side frame 211 inside the tray sorting trolley 200, so as to facilitate the wrapping from the outside of the tray sorting machine. Since the upper end of the vertical rotating shaft 282 is also connected to a limiting piece 289, in order to better install the linear motor secondary assembly 201, protect other structures, and more conveniently wrap, a cover plate 202 is arranged above each of the two side frames 211, the cover plate 202 comprises a horizontal plate and a side baffle connected to the inside of the horizontal plate, the horizontal plate is connected to the side frame 211 through a group of connecting columns 203, one end of the connecting column 203 is stepped and has external threads, and the other end of the connecting column 203 is provided with a threaded hole, so that one end of the connecting column 203 is arranged in the side frame 211 and locked by a nut, and the horizontal plate is fixed to the connecting column 203 by a bolt passing through a through hole arranged thereon and screwed into the threaded hole. The side baffle and the horizontal plate can form an obtuse angle, so that the side baffle is arranged obliquely to the tray 250. Of course, the side baffle can also be perpendicular to the horizontal plate. Of course, the limiting piece is not necessary, and the cover plate is also not necessary.

[0057] The fixed frame 400 can be connected to the track 100 or fixed to the ground or other foundation, the fixed frame 400 comprises a base frame 410, the base frame 410 is connected to a connecting frame 420 above the inner track 110 on the side close to the track 100, the connecting frame 420 is provided with the linear motor primary assembly 500 at the bottom, and the linear motor primary assembly 500 is a plurality of assemblies arranged in a row, so that each tray sorting trolley passes through a plurality of linear motor primary assemblies in turn. Of course, in other embodiments, a plurality of linear motor primary assemblies can be arranged at different positions in the circumferential direction of the track 100.

[0058] The connecting frame 420 is also connected to the wheel frame 430. A row of first pressing wheels 440 is provided on the wheel frame 430. The axis of the first pressing wheel 440 extends horizontally and is perpendicular to the extension direction of the track 100 next to it. The first pressing wheel 440 presses down on the cover plate 202 where the linear motor secondary component 201 of the pallet sorting trolley 200 passes by.

[0059] The fixed frame 400 is also provided with a row of second pressure rollers 450; the second pressure rollers 450 are fixed to the adapter frame 460 of the connecting frame 420 on the side of the connecting frame 420 that is close to the track 100 and lower than the connecting frame 420. The second pressure rollers 450 press down on the top surface of the side frame 211 where the linear motor secondary assembly 201 of the pallet sorting trolley 200 is located. Furthermore, the second pressure rollers 450 are parallel to the axis of the first pressure rollers 440 and they are distributed on both sides of the linear motor secondary assembly 201 on the pallet 250 transport trolley passing through it, thereby effectively ensuring pressure balance.

[0060] After the pallet 250 of each pallet sorting cart 200 is opened, it needs to be returned to the closed state. Specifically, see the attached diagram. Figure 2 Appendix Figure 10 As shown, a reset assembly is provided at a predetermined position on the track 100. The reset assembly includes two reset ramps 700, which correspond to the reset rollers on the back of two trays 250 on the same support shaft 212. When a tray 250 moves to the reset ramp 700, the reset rollers climb upward along the reset ramp 700, causing the tray 250 to rotate upward and close. At this time, the other tray 250, which is linked to the first tray 250, closes synchronously. During the closing process of the tray 250, the release arm 283 of the opening and closing control assembly 280 is driven to rotate to the release position by the opening and closing drive assembly 300 in a suitable position to prevent the support member 281 on it from obstructing the upward rotation and closing of the tray 250. When the reset rollers move to the top of the reset ramp 700, the tray 250 is completely closed. At this time, the release arm 283 of the opening and closing control assembly 280 can rotate in the opposite direction to the support position to support the closed tray 250.

[0061] As attached Figure 1As shown, in order to avoid the tray sorting trolley 200 being abnormally acquired long-term occupation application usage, at the track 100 is provided with an abnormal unloading assembly 800 located upstream of the reset assembly and close to the reset assembly, the abnormal unloading assembly 800 is used to open the tray 250 of the tray sorting trolley 200 passing through it, the specific structure of the abnormal unloading assembly 800 is the same as that of the opening and closing driving assembly 300, which is not repeated here; More preferably, the abnormal unloading assembly is a fixed position blocking wheel, which can block the force receiving part of the release arm moving through it to make the release arm rotate to the release position.

[0062] As shown in the accompanying drawings Figure 1 , the accompanying drawings Figure 7 As shown, at the side of the track is also provided with a detection assembly 900, which detects the force receiving part of the release arm on each tray sorting trolley passing through it through a pair of transmission sensors, when the force receiving part of the release arm on the tray sorting trolley passes through the pair of transmission sensors, the pair of transmission sensors can detect the force receiving part, so as to determine that the state of the tray sorting trolley is normal, otherwise, if the force receiving part of the release arm on the tray sorting trolley passes through the pair of transmission sensors, the pair of transmission sensors cannot detect the force receiving part, it is determined that the tray sorting trolley is abnormal, at the same time, the detection assembly can be used to determine the moving speed of the tray sorting trolley moving along the track, specifically, according to the time difference of the force receiving part of the adjacent two tray sorting trolleys detected by the pair of transmission sensors and the distance between the force receiving parts of the adjacent two tray sorting trolleys.

[0063] When the whole tray sorting machine works, the package determined to be sorted can be placed on the predetermined tray sorting trolley 200 by the automatic package supply table, and the tray sorting trolley 200 is driven to move along the track 100 by the linear motor primary assembly 500 and the linear motor secondary assembly 201. When the package reaches the sorting position, the driving wheel 310 of the opening and closing driving assembly 300 corresponding to the sorting position is lifted to a position with a height equivalent to that of the release arm 283 on the tray sorting trolley 200. When the tray sorting trolley 200 moves to the driving wheel 310, the force receiving part 287 of the release arm 283 is blocked by the driving wheel 310, so that the release arm 283 rotates to move the support 281 to the release position. At this time, the tray 250 is opened under the action of its own gravity and the gravity of the package, so that the package falls into the sorting position to complete the sorting. The tray sorting trolley 200 continues to move along the track 100 to the reset assembly, and the tray 250 returns to the closed state. Then, the tray sorting trolley 200 moves to the package loading position again to load the package. Of course, the package can also be loaded manually, and the bar code information on the package on the tray sorting trolley 200 is read by the top code reader and / or the side code reader after the package is loaded to determine the sorting position of the package.

[0064] Embodiment 2

[0065] The embodiment discloses a tray 250 sorting system, which comprises the tray sorting machine according to any one of the above.

[0066] The present application has various embodiments, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present application.

Claims

1. A tray sorter comprising a track and a circle of tray sorters moving along the track, characterised in that: The side frame on one side of the tray sorting trolley is provided with a linear motor secondary assembly above, the track is provided with a fixed frame on the position corresponding to the side of the linear motor secondary assembly, the fixed frame is provided with a linear motor primary assembly matched with the linear motor secondary assembly for driving the tray sorting trolley to move along the track. The fixed frame is provided with a row of first pressing wheels and / or a row of second pressing wheels; when any tray sorting trolley passes through the first pressing wheels, the first pressing wheels press on the top surface of the cover plate where the linear motor secondary assembly of the tray sorting trolley passes through; And / or when any tray sorting trolley passes through the second pressing wheels, the second pressing wheels press on the top surface of the side frame where the linear motor secondary assembly of the tray sorting trolley passes through; the tray sorting trolley comprises support shafts connected at both ends of the two side frames and four trays rotatably connected to the two support shafts, and the two trays in the position opposite to each other are a pair of trays which are opened and closed simultaneously, and the two side frames of the trolley frame are respectively provided with opening and closing control assemblies; The opening and closing control assembly comprises a vertical rotating shaft rotatably arranged on the side frame, and the vertical rotating shaft is provided with a release arm below the side frame; The two trays of a pair of trays are connected through a linkage arm connected at the outer ends of the two trays, and the inner side of the side frame close to the pair of trays is provided with a second buffer pad, and when a pair of trays is in a fully open state, the linkage arm is supported on the second buffer pad; The upper side of the vertical rotating shaft is provided with a limiting piece which rotates synchronously with the vertical rotating shaft, and when the pair of trays is opened, the limiting piece presses on the top of the linkage arm or the top of the protrusion on the side of the linkage arm.

2. The tray sorter according to claim 1, characterized in that: The track comprises an inner track and an outer track, the inner track is a groove-shaped track with an upward opening, the side frame below the inner side of the tray sorting trolley is provided with a walking wheel and a limiting wheel, the axis of the limiting wheel extends in the vertical direction; the side frames of adjacent tray sorting trolleys are connected through joint bearings; the two ends of the side frame on the outer side of the tray sorting trolley are provided with first buffer pads.

3. The tray sorter of claim 1, wherein: The opening and closing control assembly comprises two support pieces, and when the two trays of a pair of trays remain in a closed state, each support piece of the opening and closing control assembly on the outer side of the pair of trays provides support for one tray of the pair of trays.

4. The tray sorter of claim 3, wherein: The side of the tray close to the opening and closing control assembly which drives the opening and closing of the tray is provided with a stop block matched with the support piece, and the stop block is close to the side of the support shaft away from the rotation of the tray.

5. The tray sorter of claim 3, wherein: The release arm is provided with two support pieces, the release arm comprises a force receiving part extending to the outer side of the side frame, and the force receiving part cooperates with the opening and closing driving assembly arranged on the side of the track to drive the release arm to rotate to switch between a release position and a support position, in the release position, the support pieces do not provide support for the pair of trays, in the support position, the support pieces provide support for the pair of trays in the closed state, and the release arm is further connected to an elastic piece which keeps the release arm in the support position.

6. The tray sorter of claim 5, wherein: The opening and closing driving assembly comprises a driving wheel with an axis extending in a vertical direction, the driving wheel is connected with a lifting driver for driving the driving wheel to adjust between a first height and a second height, at the first height, the driving wheel is height-fitted with a release arm of the opening and closing control assembly, at the second height, the driving wheel is above or below the release arm.

7. The tray sorter according to any of claims 1-6, characterized in that: The track is provided with a reset assembly for switching the tray of the tray sorting trolley passing therethrough from an open state to a closed state, the track is provided with an abnormal unloading assembly upstream of the reset assembly and close to the reset assembly, the abnormal unloading assembly is used for opening the tray of the tray sorting trolley passing therethrough.

8. A tray sorting system characterized by: The tray sorting machine comprises the tray sorting machine as claimed in any one of claims 1-7.

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