A pallet reset mechanism, a sorting machine and a sorting method for a flip-type sorting trolley

Abstract

The present invention discloses a tray resetting mechanism, a sorting machine and a sorting method for a flip-plate sorting trolley. During the resetting process of the existing flip-plate sorting machine, the tray resetting mechanism and the sorting trolley will be subjected to a large impact, which greatly shortens the service life of the flip-plate sorting machine. The present invention discloses a tray resetting mechanism for a flip-plate sorting trolley, comprising a base, an inclined guide member and an elastic connecting member. The inclined guide member is mounted on the base through an elastic connecting member. In the initial state, the top surface of the inclined guide member is inclined to guide the tray of the sorting trolley to reset. When the inclined guide member is subjected to an external impact, the elastic connecting member is deformed by force, and the inclined guide member is displaced accordingly to achieve buffering. When the tray of the flip-plate sorting trolley is reset by the present invention, each hydraulic spring can be deformed to perform buffering, thereby avoiding damage to the sorting trolley and the tray resetting mechanism caused by rigid impact.

Description

Technical Field

[0001] The invention belongs to the technical field of logistics sorting, and in particular relates to a tray resetting mechanism of a flip-plate type unpowered sorting trolley, a sorting machine and a sorting method. Background Art

[0002] The flip-plate sorting machine uses a pallet as a sorting carrier and releases the goods by flipping the pallet downward. Its core advantage is that it can smoothly and reliably handle items of various sizes and shapes, such as plastic bags, irregularly packaged special-shaped parts, mails, books and periodicals, etc. In addition, the lower bag platform of the flip-plate sorting machine is set below the circular track, and there is no need to set a power source on the sorting trolley, so it has the advantages of small space occupation and low cost. However, in the existing flip-plate sorting machine, the pallet reset mechanism achieves the pallet reset by rigidly impacting the pallet flipped downward by the sorting trolley. During the reset process, both the pallet reset mechanism and the sorting trolley will be subjected to a large impact, which greatly shortens the service life of the flip-plate sorting machine. In addition, when a package is stuck on the sorting trolley, the existing pallet reset mechanism will even push the sorting trolley away, resulting in serious consequences such as derailment and damage of the sorting trolley. Summary of the invention

[0003] The object of the present invention is to provide a tray resetting mechanism of a flap type sorting trolley, a sorting machine and a sorting method.

[0004] The first object of the present invention is to provide a tray resetting mechanism for a flip-plate sorting trolley.

[0005] The present invention discloses a tray resetting mechanism for a flip-plate sorting trolley, comprising a base, an inclined guide member and an elastic connector. The inclined guide member is mounted on the base through the elastic connector. In an initial state, the top surface of the inclined guide member is inclined to guide the tray of the sorting trolley to reset. When the inclined guide member is subjected to an external impact, the elastic connector is deformed by force, and the inclined guide member is displaced to achieve buffering.

[0006] Preferably, the base is provided with a first support seat and a second support seat of an inclined guide member for installation. The first support seat and the second support seat are arranged at intervals and are both fixed on the base. The direction from the first support seat to the second support seat is the same as the conveying direction of the sorting machine. The first support seat is lower than the second support seat. The first support seat and the second support seat both include a top limit column and two side plates. The top limit column is fixed between the two side plates.

[0007] Preferably, the inclined guide member is in the shape of an elongated strip and passes through the lower part of the limiting column in the first supporting seat and the second supporting seat. The inclined guide member abuts against the limiting column under the action of the elastic connecting member.

[0008] Preferably, one end of a plurality of elastic connectors is hinged to the base, and the other end is hinged to the inclined guide member, so that the inclined guide member maintains a stable inclined state when not subjected to external impacts.

[0009] Preferably, the connection position of each elastic connector to the base is adjustable.

[0010] Preferably, the connection position of each elastic connector to the inclined guide member is adjustable.

[0011] Preferably, the elastic connectors are hydraulic springs, gas springs or metal springs.

[0012] Preferably, the tray reset mechanism of the flip - type sorting trolley of the present invention further includes a guiding and buffering layer. The guiding and buffering layer is arranged on the top surface of the inclined guide member.

[0013] The second object of the present invention is to provide another tray reset mechanism for a flip - type sorting trolley.

[0014] The tray reset mechanism of a flip - type sorting trolley of the present invention includes a base, an inclined guide member and a guiding and buffering layer. The inclined guide member is installed on the base, and its top surface is inclined, and is used to guide the reset of the tray of the sorting trolley. The guiding and buffering layer is arranged on the top surface of the inclined guide member.

[0015] Preferably, the guiding and buffering layer is a brush with bristles facing upwards.

[0016] Preferably, the guiding and buffering layer is a strip - shaped elastic material.

[0017] Preferably, the guiding and buffering layer includes a guiding plate and a plurality of springs. The guiding plate is connected to the top surface of the inclined guide member through a plurality of springs.

[0018] The third object of the present invention is to provide a flip - type sorting machine and its sorting method applying the foregoing tray reset mechanism.

[0019] A flip - type sorting machine of the present invention includes a frame, an annular track, sorting trolleys, a lower parcel table and one of the foregoing tray reset mechanisms. The annular track is installed on the frame. A plurality of sorting trolleys are arranged in sequence end - to - end on the annular track. A tray locked by a latch is arranged on the sorting trolley. When the latch is toggled, the tray flips downwards. The lower parcel table is arranged directly below the annular track. The tray reset mechanism is arranged below the annular track and at the end of the lower parcel table. The number of tray reset mechanisms corresponds to the number of trays on a single sorting trolley. The top surface of the inclined guide member in the tray reset mechanism gradually rises from low to high along the conveying direction of the sorting trolley. The lower parcel table is composed of a plurality of lower parcel units arranged in sequence along the conveying direction of the sorting trolley. A power element for toggling the latch on the sorting trolley is arranged in the lower parcel unit.

[0020] Preferably, the power element for moving the lock in the lower package unit adopts a lock-moving cylinder. The lock-moving cylinder is arranged on the side of the circular track, and its position corresponds to the outer end of the lock on the sorting trolley. The top end of the piston rod of the lock-moving cylinder supports a second roller. When the second roller is in the first extreme position, the second roller is staggered from the outer end of the lock, and the lock will not be moved when the sorting trolley passes by; when the second roller is in the second extreme position, the second roller is aligned with the outer end of the lock, and the lock will be moved when the sorting trolley passes by, so that the tray on the corresponding side of the sorting trolley is flipped down.

[0021] Preferably, one side edge of the tray on the sorting trolley is hinged to the frame. When the tray is not flipped downward, the hinge shaft on the tray is located on the side of the tray close to the conveying direction. A first roller is supported at one side edge of the tray. The lock is installed at the bottom of the frame, and the position corresponds to the first roller. The lock forms a revolving pair with the frame and is elastically connected. After being pulled, the lock is reset under the action of elastic force. A limit block is fixed to the inner end of the lock. The top surface of the limit block is a plane, which supports the first roller, so that the tray is locked. The bottom surface of the limit block is an inclined surface, so that when the tray is flipped upward to reset, the first roller can push the limit block away, thereby realizing the reset and locking of the tray.

[0022] Preferably, the sorting trolley comprises a frame, supporting wheels, positioning wheels, a tray, a lock and a secondary plate. A plurality of vertically arranged supporting wheels are installed at the bottom of the frame. The horizontally arranged positioning wheels are supported on the side of the frame. The secondary plate is fixed to one side of the frame. Two trays are arranged side by side on the frame. The two trays correspond to the positions of the two tray reset mechanisms. Two first rollers are respectively arranged on the opposite sides of the bottoms of the two trays.

[0023] Preferably, the lower bag unit comprises a lower bag inclined plate and two lower bag openings. The two lower bag openings are arranged side by side below the annular track. Inclined sliding surfaces are arranged in the two lower bag openings. The lower bag inclined plate is arranged between the annular guide rail and the lower bag openings. The middle part of the lower bag inclined plate and the frame form a rotating pair with a common axis parallel to the conveying direction of the sorting trolley. The lower bag inclined plate is driven to flip by a cylinder or a motor. The two extreme positions of the flipping of the lower bag inclined plate are respectively docked with the two lower bag openings.

[0024] Preferably, the frames of two adjacent sorting trolleys are hinged or connected by a ball joint. Each sorting trolley is driven by a non-contact linear motor.

[0025] Preferably, the flip plate sorting machine of the present invention further comprises an upper packing platform, which is arranged on the side of the circular track, and a lower packing platform which is located between the upper packing platform and the tray resetting mechanism.

[0026] The sorting method of the flip plate sorter is as follows:

[0027] Step 1: Each sorting cart moves in a cycle along the annular guide rail; the staff continuously send the packages to be sorted onto the moving sorting cart; each package corresponds to a target discharging grid opening.

[0028] Step 2: The package is conveyed above the discharging table along with the sorting cart. When the distance between the package and the target discharging grid opening reaches a preset value, the discharging switching cylinder in the discharging unit where the target discharging grid opening is located drives the discharging inclined plate to flip and switch to the state of docking with the target discharging grid opening; the power element corresponding to the discharging unit where the target grid opening is located toggles the latch on the sorting cart, so that the tray corresponding to the package flips downward, and the package is sent into the target grid opening through the discharging inclined plate.

[0029] Step 3: When the sorting cart with the tray flipped downward leaves above the discharging table and reaches the tray reset mechanism, the tray flipped downward gradually flips upward and is locked by the latch under the push of the inclined guiding member.

[0030] The beneficial effects of the present invention are as follows:

[0031] When the present invention resets the tray of the flip - type sorting cart, each hydraulic spring can deform for buffering, avoiding damage to the sorting cart and the tray reset mechanism caused by rigid impact. In addition, the brush can also play a buffering effect when being impacted by the tray of the sorting cart, thereby further protecting the inclined guiding member and the tray of the sorting cart.

[0032] When the situation of the tray of the sorting cart getting stuck with a package occurs in the present invention, the inclined guiding member is impacted by the tray but cannot push the tray to reset. The inclined guiding member sinks due to the deformation of the spring, avoiding excessive extrusion force between the tray and the inclined guiding member, and further avoiding accidents such as damage or derailment of the sorting cart.

[0033] 3. The reset of the tray of the sorting cart in the present invention changes from the 90° state to the 0° state step by step. Therefore, the present invention has advantages such as small reset resistance, not easy to malfunction, and low noise. Brief Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 (tray reset mechanism) of the present invention;

[0035] Figure 2 It is a schematic diagram of the overall structure of Embodiment 8 (flip - type sorting machine) of the present invention;

[0036] Figure 3 It is a schematic diagram of the structure of the sorting cart in Embodiment 8 of the present invention;

[0037] Figure 4 It is a cross - sectional view at the discharging table of Embodiment 8 of the present invention;

[0038] Figure 5 Schematic diagram of the positional relationship among the sorting trolley, the circular track, the lower package table, and the flip - type sorting machine in Embodiment 8 of the present invention ( Figure 4 Partial enlarged view of part A in Detailed implementation manners

[0039] The present invention will be further described below with reference to the accompanying drawings.

[0040] Embodiment 1

[0041] As Figure 1 shown, a pallet reset mechanism of a flip - type sorting trolley includes a base 1, an inclined guide 2, a hydraulic spring 3, a first support seat 4, a second support seat 5, a brush 6, a brush fixing and clamping member 7, and a brush mounting strip 8. The base 1 is installed on the frame 9 of the sorting machine. The first support seat 4 and the second support seat 5 are arranged at intervals and are both fixed on the base 1. The direction from the first support seat 4 to the second support seat 5 is the same as the conveying direction of the sorting machine. The first support seat 4 is lower than the second support seat 5. Both the first support seat 4 and the second support seat 5 include a top limit post and two side plates. The top limit post is fixed at the top between the two side plates. The arrangement direction of the two side plates is perpendicular to the conveying direction of the sorting machine. The inclined guide 2 is installed on the base 1 through the hydraulic spring 3, the first support seat 4, and the second support seat 5.

[0042] The inclined guide 2 is strip - shaped and passes through below the limit posts in the first support seat 4 and the second support seat 5. There are four hydraulic springs 3 in total. One end of two of the hydraulic springs 3 respectively forms a rotating pair with the two side plates of the first support seat 4, and the other end respectively forms a rotating pair with different positions of the inclined guide 2. One end of the other two hydraulic springs 3 respectively forms a rotating pair with the two side plates of the second support seat 5, and the other end respectively forms a rotating pair with different positions of the inclined guide 2. The four hydraulic springs 3 all have pre - tightening forces, generating a thrust on the inclined guide 2, so that the inclined guide 2 abuts against the limit posts in the first support seat 4 and the second support seat 5. Since the heights of the first support seat 4 and the second support seat 5 are different, the inclined guide 2 is inclined, facilitating the reset of the pallet that is turned down by the flip - type sorting trolley 11. When the inclined guide 2 is subjected to an external impact, each hydraulic spring 3 can deform for buffering, avoiding damage to the sorting trolley 11 and the reset mechanism caused by rigid impact. The brush mounting strip 8 is fixed to the top of the inclined guide 2. The brush 6 is installed on the brush mounting strip 8 through the brush fixing and clamping member 7. The brush 6 can play a buffering effect when being impacted by the pallet 11 - 4 of the sorting trolley 11, thereby further achieving the technical effect of extending the service life of the sorting trolley 11 and the reset mechanism, and minimizing the failure rate of the trolley damaged by impacts.

[0043] Embodiment 2

[0044] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the position where the hydraulic spring 3 is connected to the first support seat 4 or the second support seat 5 can be adjusted, so as to adjust the pre-tightening force of the hydraulic spring 3 and the force structure of the inclined guide member 2. This position adjustment is achieved by sliders and set screws installed on the first support seat 4 and the second support seat 5, or by other existing hinge point position adjustment methods.

[0045] Embodiment 3

[0046] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the position where the hydraulic spring 3 is connected to the inclined guide member 2 can be adjusted, so as to adjust the pre-tightening force of the hydraulic spring 3 and the force structure of the inclined guide member 2. This position adjustment is achieved by sliders, T-slots and bolt nuts installed on the inclined guide member 2, or by other existing hinge point position adjustment methods.

[0047] Embodiment 4

[0048] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the hydraulic spring 3 is replaced with a gas spring.

[0049] Embodiment 5

[0050] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the hydraulic spring 3 is replaced with a metal compression spring.

[0051] Embodiment 6

[0052] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the brush 6 is replaced with an elastic strip. The material of the elastic strip is rubber or sponge.

[0053] Embodiment 7

[0054] A pallet reset mechanism for a tipping sorting trolley. The difference between this embodiment and Embodiment 1 is that the brush 6 is replaced with a guide plate connected to the inclined guide member 2 by multiple springs. When the pallet 11-4 of the sorting trolley 11 impacts the guide plate, the springs below the guide plate can buffer through compression, thus avoiding rigid impact and prolonging the service life of the sorting trolley 11 and the reset mechanism.

[0055] Embodiment 8

[0056] As Figure 2As shown in the figure, a tipping sorting machine includes a frame 9, a circular track 10, sorting trolleys 11, an upper parcel table (not shown in the figure), a lower parcel table 12, and any one of the tray reset mechanisms 13 described in Embodiments 1 to 7. The circular track 10 is installed on the top of the frame 9. A plurality of sorting trolleys 11 are arranged in sequence end to end on the circular track 10. The frames 11-1 of two adjacent sorting trolleys 11 are hinged or connected by a ball hinge. Each sorting trolley 11 is driven by a non-contact linear motor 14 and can continuously convey goods periodically along the circular track 10. The non-contact linear motor 14 is fixed on the frame 9 and can push the secondary plate 11-6 (aluminum plate) on the sorting trolley 11 without contact. The upper parcel table is arranged on the side of the circular track 10 and is used to add goods parcels to the sorting trolley 11. The lower parcel table 12 is arranged directly below one section of the circular track 10. Two side-by-side and spaced tray reset mechanisms 13 are arranged below the circular track 10 (between the inner and outer tracks) and are located at the end of the lower parcel table 12 (the position where the sorting trolley leaves above the lower parcel table). The top surface of the inclined guide member 2 in the tray reset mechanism 13 gradually rises from low to high along the conveying direction of the sorting trolley 11 and can gradually push the tray on the sorting trolley 11 to reset. The lower parcel table 12 is located between the upper parcel table and the tray reset mechanism 13.

[0057] As Figure 3 As shown in the figure, the sorting trolley 11 includes a frame 11-1, support wheels 11-2, positioning wheels 11-3, trays 11-4, latches 11-5, and secondary plates 11-6. Four vertically arranged support wheels 11-2 are grouped in pairs and installed on both sides of the bottom of the frame 11-1 and are supported by the circular track 10. The horizontally arranged positioning wheels 11-3 are supported on the side of the frame 11-1 and are used to cooperate with the side plates of the circular track 10 to realize the positioning and turning of the sorting trolley 11. The secondary plate 11-6 is fixed on one side of the frame 11-1 and is used to cooperate with the non-contact linear motor 14 on the frame 9. Two trays 11-4 are arranged side by side on the frame 11-1. The two trays 11-4 correspond to the two tray reset mechanisms 13 respectively in position. One side edge of the tray 11-4 is hinged to the frame 11-1. When the tray 11-4 is in the state of not being turned downwards, the hinge shaft on the tray 11-4 is located on the side of the tray 11-4 close to the conveying direction. Thus, when the sorting trolley 11 with the tray 11-4 turned downwards passes through the inclined guide member 2 of the tray reset mechanism 13, it can be turned upwards to reset. Oblique blocks are fixed in the middle of the bottom surfaces of the two trays 11-4 and are used to cooperate with the tray reset mechanism 13 to reduce the impact during tray reset. When the sorting trolley 11 moves to the highest point of the inclined guide member 2, the tray 11-4 is supported by the inclined guide member 2, and the whole sorting trolley 11 will not be lifted and derailed.

[0058] The opposite side edges of the two trays 11-4 are supported with first rollers 11-7. Lock buckles 11-5 for locking the position of the trays 11-4 are provided on both sides of the bottom of the frame 11-1. The middle part of the lock buckle 11-5 is hinged to the bottom of the frame 11-1 (the axis of rotation is vertically arranged). A torsion spring for resetting the lock buckle 11-5 is provided on the hinge shaft between the lock buckle 11-5 and the frame 11-1. The two ends of the torsion spring are respectively fixed to the frame 11-1 and the lock buckle 11-5. A limiting block 11-8 is fixed to the inner end of the lock buckle 11-5. The top surface of the limiting block 11-8 is a plane, which is used to support the first roller 11-7 on the tray 11-4, and the bottom surface is an inclined surface, so that when the tray 11-4 is flipped upward to reset, the first roller 11-7 can push the limiting block 11-8 away to achieve reset and locking. The outer end of the lock 11-5 extends out to cooperate with the lock-actuating cylinder 12-3 in the lower packaging platform 12, and the lock 11-5 is moved to unlock the tray 11-4. In the initial state, the tray 11-4 remains horizontal and is supported by the limit block 11-8 on the lock 11-5, so that parcels can be placed and transported; when the lock 11-5 is moved, the first roller 11-7 on the tray 11-4 separates from the limit block 11-8, and the tray 11-4 loses support and flips downward, and the parcels placed on the tray 11-4 fall downward into the lower packaging platform 12.

[0059] like Figure 2 , 4 As shown in Figure 5, the lower bag platform 12 is composed of a plurality of lower bag units arranged in sequence along the conveying direction of the sorting trolley 11. The lower bag unit includes a lower bag inclined plate 12-1, a lower bag switching cylinder 12-2, a lock toggle cylinder 12-3 and two lower bag grid openings 12-4. The two lower bag grid openings 12-4 are arranged side by side below the annular track 10. The two lower bag grid openings 12-4 are provided with inclined sliding surfaces facing opposite directions. The lower bag inclined plate 12-1 is arranged between the annular guide rail and the lower bag grid openings 12-4. The middle part of the lower bag inclined plate 12-1 and the frame 9 form a rotating pair with a common axis parallel to the conveying direction of the sorting trolley 11. The flipping position of the lower bag inclined plate 12-1 can determine which lower bag grid opening the package dropped from the sorting trolley 11 falls into. The lower bag switching cylinder 12-2 is arranged below the lower bag inclined plate 12-1, the cylinder body is hinged to the frame 9, and the piston rod is hinged to the bottom surface of the lower bag inclined plate 12-1; the pushing out and retracting of the lower bag switching cylinder 12-2 can drive the lower bag inclined plate 12-1 to flip, thereby controlling the grid into which the package falls.

[0060] Two latch actuating cylinders 12-3 are respectively arranged on both sides inside the annular track 10, and their positions correspond to the outer ends of the two latches 11-5 on the sorting trolley 11. The top ends of the piston rods of the two latch actuating cylinders 12-3 support the second rollers 12-5. When the latch actuating cylinder 12-3 retracts, the second roller 12-5 is staggered from the outer end of the corresponding latch 11-5 on the sorting trolley 11, and the sorting trolley 11 will not toggle the latch 11-5 when passing by; when the latch actuating cylinder 12-3 extends, the second roller 12-5 aligns with the outer end of the corresponding latch 11-5 on the sorting trolley 11, and the sorting trolley 11 will toggle the latch 11-5 when passing by, causing the tray 11-4 on the corresponding side of the sorting trolley 11 to turn downward.

[0061] The sorting method of this flap type sorting machine is as follows:

[0062] Step 1: Each sorting trolley 11 moves cyclically along the annular guide rail driven by the non-contact linear motor 14; the staff continuously send the packages to be sorted onto the moving sorting trolley 11 at the upper loading station; the target lower loading compartments corresponding to each package are obtained in advance by scanning the code.

[0063] Step 2: The package is conveyed above the lower loading station 12 along with the sorting trolley 11. When the distance between the package and the target lower loading compartment reaches the preset value (the latch actuating cylinder 12-3 of the previous lower loading unit where the target compartment is located has been passed), the lower loading switching cylinder 12-2 in the lower loading unit where the target compartment is located drives the lower loading inclined plate 12-1 to flip and switch to the state of docking with the target compartment, and the latch actuating cylinder 12-3 corresponding to the lower loading unit where the target compartment is located extends, so that the corresponding second roller 12-5 toggles the corresponding latch 11-5 on the sorting trolley, causing the tray 11-4 corresponding to the package to turn downward, and the package is sent into the target compartment through the lower loading inclined plate 12-1.

[0064] Step 3: When the sorting trolley 11 with the tray 11-4 turned downward leaves above the lower loading station 12 and reaches the tray reset mechanism 13, the downwardly turned tray 11-4 gradually turns upward under the push of the inclined guiding member 2, and finally the first roller 11-7 on the tray 11-4 pushes the limiting block 11-8 on the corresponding latch 11-5 to reset and is supported by the limiting block 11-8 again. Since the reset of the trolley tray changes from the 90-degree state to the 0-degree state step by step, the present invention has the advantages of small reset resistance, not easy to break down, and low noise.

[0065] When there is a card pack in the tray 11-4, it is difficult for the tray 11-4 to reset under the push of the inclined guide 2. The increased force on the inclined guide 2 will cause the spring to deform, and then the inclined guide 2 will sink, avoiding excessive extrusion force between the tray 11-4 and the inclined guide 2, which may damage the sorting trolley 11 or the tray reset mechanism 13. At this time, although the tray of the sorting trolley 11 cannot be reset, the entire sorting machine can continue to operate normally, avoiding worse accidents such as trolley damage or derailment, and effectively realizing efficient sorting of packages.

Claims

1. A pallet reset mechanism for a flip - type sorting trolley, comprising a base (1) and an inclined guide member (2); characterized in that: It further includes an elastic connecting piece; the inclined guiding piece (2) is installed on the base (1) through the elastic connecting piece; in the initial state, the top surface of the inclined guiding piece (2) is inclined and used to guide the tray of the sorting trolley to reset; when the inclined guiding piece (2) is subjected to an external impact, the elastic connecting piece is deformed by the force, and the inclined guiding piece (2) undergoes displacement accordingly to achieve buffering; A first support seat (4) and a second support seat (5) for installing the inclined guiding piece (2) are arranged on the base (1); the first support seat (4) and the second support seat (5) are arranged at intervals and are both fixed on the base (1); the direction from the first support seat (4) to the second support seat (5) is the same as the conveying direction of the sorter; the first support seat (4) is lower than the second support seat (5); both the first support seat (4) and the second support seat (5) include a top limiting column and two side plates; the top limiting column is fixed between the two side plates; The inclined guiding piece (2) is strip-shaped and passes below the limiting columns in the first support seat (4) and the second support seat (5); each elastic connecting piece has a pre-tightening force, so that the inclined guiding piece (2) abuts against the limiting column under the action of the elastic connecting piece; One end of two of the elastic connecting pieces forms a rotating pair with the first support seat (4), and the other end forms rotating pairs with different positions of the inclined guiding piece (2) respectively; one end of the other two elastic connecting pieces forms a rotating pair with the second support seat (5), and the other end forms rotating pairs with different positions of the inclined guiding piece (2) respectively; the inclined guiding piece (2) maintains a stable inclined state when not subjected to external impact; the connection positions of each elastic connecting piece and the inclined guiding piece (2) are adjustable; by adjusting the connection positions of the elastic connecting piece and the inclined guiding piece (2), the pre-tightening force of the elastic connecting piece is adjusted.

2. The pallet reset mechanism of a flap type sorting trolley according to claim 1, characterized in that: It further includes a guiding and buffering layer; the guiding and buffering layer is arranged on the top surface of the inclined guiding piece.

3. The pallet reset mechanism of a flip-type sorting trolley according to claim 1, characterized in that: The connection positions of each elastic connecting piece and the first support seat (4) or the second support seat (5) are adjustable.

4. The pallet reset mechanism of a flip-type sorting trolley according to claim 1, characterized in that: The elastic connecting piece adopts a hydraulic spring (3), a gas spring or a metal spring.

5. The pallet reset mechanism of a flip-type sorting trolley according to claim 2, characterized in that: The guiding and buffering layer adopts a brush (6) with bristles facing up.

6. The pallet reset mechanism of a flip-type sorting trolley according to claim 2, characterized in that: The guiding and buffering layer adopts a strip-shaped elastic material.

7. The pallet reset mechanism of a flip-type sorting trolley according to claim 2, characterized in that: The guiding and buffering layer includes a guiding plate and multiple springs; the guiding plate is connected to the top surface of the inclined guiding piece (2) through the multiple springs.

8. A tipping sorting machine comprising the tray reset mechanism according to any one of claims 1 to 7, further comprising a frame (9), an annular track (10), a sorting trolley (11), and a lower packing table (12); characterized in that: The circular track (10) is mounted on a frame (9); a plurality of sorting carts (11) are sequentially arranged end to end on the circular track (10); a tray locked by a lock is arranged on the sorting cart (11); when the lock is turned, the tray flips downward; a lower packaging platform (12) is arranged directly below the circular track (10); a tray reset mechanism (13) is arranged below the circular track (10) and at the end of the lower packaging platform (12); the number of tray reset mechanisms (13) corresponds to the number of trays on a single sorting cart (11); the top surface of the inclined guide member (2) in the tray reset mechanism (13) is gradually raised from low to high along the conveying direction of the sorting cart (11); the lower packaging platform (12) is composed of a plurality of lower packaging units sequentially arranged along the conveying direction of the sorting cart (11); and a power element for turning the lock on the sorting cart (11) is arranged in the lower packaging unit.

9. The flip - type sorting machine according to claim 8, wherein: The power element for moving the lock in the lower package unit adopts a lock-moving cylinder (12-3); the lock-moving cylinder (12-3) is arranged on the side of the circular track (10) and its position corresponds to the outer end of the lock (11-5) on the sorting trolley (11); the top end of the piston rod of the lock-moving cylinder (12-3) supports a second roller (12-5); when the second roller (12-5) is in a first limit position, the second roller (12-5) is staggered from the outer end of the lock (11-5), and the lock (11-5) will not be moved when the sorting trolley (11) passes by; when the second roller (12-5) is in a second limit position, the second roller (12-5) is aligned with the outer end of the lock (11-5), and the lock (11-5) will be moved when the sorting trolley (11) passes by, so that the tray (11-4) on the corresponding side of the sorting trolley (11) is flipped downward.

10. A flip - type sorting machine according to claim 8, wherein: One side edge of the tray (11-4) on the sorting trolley (11) is hinged to the frame (11-1); when the tray (11-4) is not flipped downward, the hinge axis on the tray (11-4) is located on the side of the tray (11-4) close to the conveying direction; a first roller (11-7) is supported at one side edge of the tray (11-4); a lock (11-5) is installed at the bottom of the frame (11-1) and its position corresponds to the first roller (11-7); the lock (11-5) and the frame (11-1) are connected to each other. A rotating pair is formed and elastically connected; the lock buckle (11-5) is reset under the action of elastic force after being toggled; a limiting block (11-8) is fixed at the inner end of the lock buckle (11-5); the top surface of the limiting block (11-8) is a plane, supporting the first roller (11-7), so that the tray (11-4) is locked; the bottom surface of the limiting block (11-8) is an inclined surface, so that when the tray (11-4) is flipped upward and reset, the first roller (11-7) can push the limiting block (11-8) away, thereby achieving the reset and locking of the tray (11-4).

11. A flap type sorting machine according to claim 8, characterized in that: The sorting trolley (11) described above includes a vehicle frame (11-1), supporting wheels (11-2), positioning wheels (11-3), trays (11-4), latches (11-5), and secondary plates (11-6); a plurality of vertically arranged supporting wheels (11-2) are installed at the bottom of the vehicle frame (11-1); the horizontally arranged positioning wheels (11-3) are supported on the side of the vehicle frame (11-1); the secondary plates (11-6) are fixed to one side of the vehicle frame (11-1); two trays (11-4) are arranged side by side on the vehicle frame (11-1); the two trays (11-4) correspond to two tray reset mechanisms (13) respectively in terms of position; two first rollers (11-7) are respectively arranged on the opposite sides of the bottoms of the two trays (11-4).

12. The tipping sorting machine according to claim 8, wherein: The lower package unit described above includes a lower package inclined plate (12-1) and two lower package compartments (12-4); the two lower package compartments (12-4) are arranged side by side below the circular track (10); an inclined sliding surface is provided in the two lower package compartments (12-4); the lower package inclined plate (12-1) is arranged between the circular guide rail and the lower package compartments (12-4); the middle part of the lower package inclined plate (12-1) forms a rotating pair with the machine frame (9) with a common axis parallel to the conveying direction of the sorting trolley (11); the lower package inclined plate (12-1) is driven to flip by a cylinder or a motor; the two extreme positions of the flipping of the lower package inclined plate (12-1) are respectively docked with the two lower package compartments (12-4).

13. A flip - type sorting machine according to claim 8, characterized in that: The vehicle frames (11-1) of two adjacent sorting trolleys (11) are hinged; each sorting trolley (11) is driven by a non-contact linear motor (14).

14. A flip - type sorting machine according to claim 8, characterized in that: It further includes an upper package table; the upper package table is arranged on the side of the circular track (10); the lower package table (12) is located between the upper package table and the tray reset mechanism (13).

15. The sorting method of a flip - type sorting machine according to claim 8, characterized in that: Step 1: Each sorting trolley (11) moves in a cycle along the circular guide rail; the staff continuously send the packages to be sorted onto the moving sorting trolley (11); each package corresponds to a target lower package compartment. Step 2: The package is conveyed above the lower package table (12) along with the sorting trolley (11). When the distance between the package and the target lower package compartment reaches a preset value, the lower package switching cylinder (12-2) in the lower package unit where the target lower package compartment is located drives the lower package inclined plate (12-1) to flip and switch to the state of docking with the target lower package compartment; the power element corresponding to the lower package unit where the target compartment is located toggles the latch (11-5) on the sorting trolley, so that the tray (11-4) corresponding to the package is turned downwards, and the package is sent into the target lower package compartment through the lower package inclined plate (12-1). Step 3: When the sorting trolley (11) with the tray (11-4) turned downwards leaves above the lower package table (12) and reaches the tray reset mechanism (13), the tray (11-4) that is turned downwards gradually flips upwards and is locked by the latch under the push of the inclined guide (2).

Images