A weight sorting machine for logistics sorting and its usage method

Abstract

This invention relates to the field of logistics sorting. It discloses a weight-based sorting machine and its usage method for logistics sorting. The problem this invention addresses is that sorting machines often only sort items according to a single size or weight standard, requiring subsequent sorting by operators and failing to truly improve sorting efficiency. This invention consists of a trigger ejection mechanism and a reset mechanism. If the weight of the logistics box is insufficient to deflect the limiting spring extension plate on the leftmost T-shaped plate, the box continues to move to the right under the action of the conveyor. When the box can deflect the middle T-shaped plate to a specified angle, the middle abutment rod pushes the box onto its corresponding belt conveyor. Similarly, if the middle T-shaped plate does not deflect, the box continues to move to the right, allowing the sorting machine to sort logistics boxes of different weights.

Description

Technical Field

[0001] This invention relates to the field of logistics sorting, specifically to a weight sorting machine for logistics sorting and its usage method. Background Technology

[0002] Although China's logistics industry started relatively late, with the rapid development of the national economy, it has maintained a fast growth rate, the logistics system has been continuously improved, and the industry operation has become increasingly mature and standardized. Logistics work mainly includes seven components: transportation, warehousing, packaging, handling and loading / unloading, distribution processing, delivery, and related logistics information. Among these, sorting is an essential part of the distribution processing of goods, and sorting machines are the main equipment in the sorting process.

[0003] Existing sorting machines, when sorting non-fragile logistics boxes, can mostly only sort items according to a single size or weight standard, which means that sorting staff need to sort the items again later, and cannot truly improve the sorting efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a weight sorting machine and its usage method for logistics sorting, to solve the problem mentioned in the background art that sorting machines can mostly only sort items according to a single size or weight standard when sorting logistics boxes, resulting in the need for sorting personnel to sort the items again later, which cannot truly improve the sorting efficiency. To achieve the above objective, this invention provides the following technical solution: a weight sorting machine for logistics sorting, including a conveyor frame, a through groove is opened on the vertical plate on the rear side of the conveyor frame, a trigger ejection mechanism is provided on the inner wall of the through groove, a conveyor is installed on the inner side of the conveyor frame, and worm gears are fixedly sleeved on the two drive shafts of the conveyor, a reset mechanism is engaged on the worm gears, and the reset mechanism is fixed on the vertical plate on the rear side of the conveyor frame;

[0005] A transverse conveying mechanism is installed on the front side of the conveyor frame.

[0006] Preferably, the trigger ejection mechanism includes a housing fixed to the inner wall of the through groove, an abutment rod inserted through the housing, a compression spring movably sleeved on the outer side of the abutment rod, one end of the compression spring abutting against the inner wall of the housing, and the other end of the compression spring fixed to the outer side of the abutment rod;

[0007] A sliding sleeve is fixedly sleeved on the outer side of the abutment rod, and the sliding sleeve is slidably connected in a limiting groove opened in the inner wall of the outer shell. A ring sleeve is fixedly sleeved at equal distances in a straight line on the front end of the side of the abutment rod.

[0008] Preferably, the reset mechanism includes a rotating shaft rotatably mounted on the rear vertical plate of the conveyor frame, and worm gears are fixedly sleeved on both ends of the side of the rotating shaft, with the two worm gears meshing with two worms respectively;

[0009] The rotating shaft has an annular groove on its side. A transmission gear is movably sleeved on the inner wall of the annular groove. The transmission gear meshes with the annular groove. Circular grooves are formed on both end faces of the transmission gear. Four wedge-shaped blocks are fixedly connected in a ring at equal intervals in the circular groove. An arc-shaped plate abuts against the side of each wedge-shaped block. The end of the arc-shaped plate away from the wedge-shaped block is hinged to the inner wall of the annular groove.

[0010] A return spring telescopic rod is hinged between the inner side of the arc plate and the inner wall of the annular groove. A protrusion is fixedly connected to the side of the arc plate. The surface of the protrusion abuts against the arc plate. The four arc plates are equidistantly and annularly hinged to the inner wall of the annular groove. A connecting plate is hinged between each pair of adjacent arc plates.

[0011] Rollers are provided on the end of the arc plate away from the annular groove. A sleeve is fitted on the outer side of the four rollers. The sleeve is on the outer side of the annular groove. A T-shaped plate is fixedly connected to the outer side of the sleeve. The rear side of the horizontal plate of the T-shaped plate is hinged to the rear vertical plate of the conveyor frame. A limit spring telescopic plate is fixedly connected to the top surface of the horizontal plate of the T-shaped plate. The upper end of the limit spring telescopic plate is inclined. The limit spring telescopic plate abuts against the front end face of the sliding sleeve. A first spring telescopic rod is hinged between the rear side of the horizontal plate of the T-shaped plate and the rear vertical plate of the conveyor frame. A hinge block is hinged to the front side of the horizontal plate of the T-shaped plate. The hinge block is located between the two transmission belts of the conveyor. L-shaped limit plates overlap in the vertical grooves on the left and right sides of the hinge block. The rear side of the horizontal plate of the L-shaped limit plate is fixed to the rear vertical plate of the conveyor frame.

[0012] Preferably, the number of the first spring telescopic rods is three, and the length of the three first spring telescopic rods decreases from left to right to 0.8 times the length of the first spring telescopic rod adjacent to its left.

[0013] Preferably, the transverse conveying mechanism includes a horizontal plate disposed on a conveyor frame, and a belt conveyor is obliquely mounted on the horizontal plate;

[0014] Two baffle plates are symmetrically fixedly connected to the horizontal plate. A spring plate is fixedly connected to the left baffle plate. A pull rod is hinged to the baffle plate. A torsion spring is provided on the pull rod, and the pull rod is rotatably connected to the left horizontal plate through the torsion spring.

[0015] A rectangular groove is provided on the barrier plate on the right side. A baffle is hinged to the upper side of the inner wall of the rectangular groove. A counterweight is abutted against the right side of the baffle. A traction rope is fixedly connected to one end of the counterweight, and the end of the traction rope away from the counterweight is fixed to the pull rod.

[0016] Preferably, the pull rod consists of two L-shaped connecting rods, and the pull rod is located on the upper side of the barrier plate.

[0017] Preferably, the barrier plate is L-shaped.

[0018] Preferably, the method of using the weight sorting machine for logistics sorting includes the following steps:

[0019] S1: When users sort packages by weight, they first feed the boxes onto the conveyor at intervals, ensuring a certain distance between each box. As the conveyor runs, a worm gear drives a rotating shaft to rotate clockwise, causing an arc-shaped plate on the shaft to push a wedge block to rotate. This, in turn, drives the transmission gear to rotate clockwise, causing the contact rod inside the ring to move towards the rear end of the outer casing. This keeps the compression spring in a continuously compressed state. The boxes are then intermittently transported to the top of the first hinge block on the left side via the conveyor, where their own weight compresses the pressure. The moving hinge block moves downward, causing one end of the T-shaped plate to deflect downward, which in turn causes the limit spring telescopic plate to deflect downward, releasing its limit on the sliding sleeve. When one end of the T-shaped plate deflects downward, it pulls the sleeve downward to contact the arc plate, causing the arc plate to deflect into the annular groove and fit. During the deflection of the arc plate, the arc plate squeezes the protrusion, causing the protrusion to deflect close to the central axis of the rotation shaft, pulling one end of the arc plate to separate from the wedge block, releasing the arc plate's restriction on the wedge block. Under the action of the compression spring's restoring force, the contact rod pops out from inside the outer shell, pushing the logistics box onto the belt conveyor.

[0020] Conversely, if the weight of the logistics box is insufficient to deflect the limit spring telescopic plate on the leftmost T-shaped plate downwards, the logistics box continues to move to the right under the action of the conveyor. When it reaches the middle hinge block and the upper part of the T-shaped plate, the length of the first spring telescopic rod on the middle T-shaped plate is shorter than the length of the first spring telescopic rod from the left, which reduces the supporting force of the corresponding T-shaped plate on the logistics box. When the logistics box can deflect the middle T-shaped plate downwards to the specified angle, the middle abutment rod can push the logistics box onto the corresponding belt conveyor. Similarly, if the middle T-shaped plate does not deflect, the logistics box continues to move to the right, allowing the sorting machine to sort logistics boxes of different weights.

[0021] S2: When the contact rod pops out from the housing, the conveyor drives the rotating shaft to rotate clockwise through the worm gear on it, which causes the arc plate on the rotating shaft to push the wedge block to rotate, which drives the transmission gear to rotate clockwise synchronously, causing the contact rod in the ring sleeve to move towards the rear end of the inner wall of the housing, so that the contact rod returns to its original position and retracts into the housing, and the sliding sleeve is once again locked on the rear side of the limit spring telescopic plate.

[0022] S3: When the logistics box enters the corresponding belt conveyor, since the belt conveyor is inclined, the logistics box will move along the right-side baffle. When the logistics box does not contact one end of the spring plate during the movement, that is, the logistics box is short in lateral length, and it is directly conveyed longitudinally to the corresponding collection box. However, when the logistics box is slightly longer, the logistics box will abut against the pull rod when moving on the belt conveyor, causing the pull rod and the traction rope to pull the counterweight to deflect, releasing its resistance to the baffle. At this time, under the action of the conveying force of the belt conveyor, the logistics box slides along the inner side of the spring plate and squeezes the baffle, causing it to deflect and open, thus allowing the slightly longer logistics box to flow onto the belt conveyor on the right side of the right baffle, and the logistics boxes are sorted according to their length.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In this invention, the logistics box is indirectly transported to the upper side of the first hinge block on the left by the conveyor. The weight of the logistics box itself presses the hinge block to move downward, causing one end of the T-shaped plate to deflect and move downward, releasing the restriction of the arc plate on the wedge block. Under the action of the compression spring's restoring force, the abutment rod pops out from the inside of the shell and pushes the logistics box onto the belt conveyor, thus enabling the sorting machine to sort the logistics box.

[0025] In this invention, if the weight of the logistics box is insufficient to deflect the limiting spring telescopic plate on the leftmost T-shaped plate, the logistics box continues to move to the right under the action of the conveyor. When the logistics box can deflect the middle T-shaped plate to a specified angle, the middle abutment rod can push the logistics box onto the corresponding belt conveyor. Similarly, if the middle T-shaped plate does not deflect, the logistics box continues to move to the right, allowing the sorting machine to sort logistics boxes of different weights.

[0026] In this invention, when a logistics box enters the corresponding belt conveyor, if the logistics box does not contact one end of the spring plate during its movement, that is, the logistics box has a short lateral length, it is directly transported longitudinally to the corresponding collection box. However, when the logistics box is slightly longer, it abuts against the pull rod while moving on the belt conveyor, causing the pull rod and the traction rope to pull the counterweight to deflect, relieving its resistance to the baffle. At this time, under the action of the conveying force of the belt conveyor, the logistics box slides along the inner side of the spring plate and squeezes the baffle, causing it to deflect and open, thus allowing the slightly longer logistics box to flow onto the belt conveyor on the right side of the right-side baffle plate, where the logistics boxes are sorted according to their length. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0029] Figure 3 This is a partial three-dimensional structural cross-sectional view of the present invention;

[0030] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0031] Figure 5 This is a three-dimensional cross-sectional view of the rotating shaft of the present invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the horizontal plate and belt conveyor of the present invention;

[0033] Figure 7 This is a three-dimensional structural diagram of the counterweight, traction rope, and other structures of the present invention.

[0034] In the diagram: 1. Conveyor frame; 2. Through groove; 3. Trigger ejection mechanism; 31. Outer shell; 32. Abutment rod; 33. Compression spring; 34. Sliding sleeve; 35. Limiting groove; 36. Ring sleeve; 4. Conveyor; 5. Worm gear; 6. Reset mechanism; 61. Rotating shaft; 62. Worm wheel; 63. Ring groove; 64. Transmission gear; 65. Circular groove; 66. Wedge block; 67. Arc plate; 68. Reset spring telescopic rod; 69. Protrusion; 610. Arc plate 611. Roller; 612. Sleeve; 613. T-shaped plate; 614. First spring telescopic rod; 615. Hinge block; 616. L-shaped limiting plate; 617. Connecting plate; 618. Limiting spring telescopic plate; 7. Lateral conveying mechanism; 71. Horizontal plate; 72. Belt conveyor; 73. Barrier plate; 74. Spring plate; 75. Tie rod; 76. Torsion spring; 77. Baffle plate; 78. Counterweight block; 79. Traction rope; 710. Rectangular trough. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 7 The present invention provides a technical solution: a weight sorting machine for logistics sorting, including a conveyor frame 1, a through groove 2 is provided on the vertical plate on the rear side of the conveyor frame 1, a trigger ejection mechanism 3 is provided on the inner wall of the through groove 2, a conveyor 4 is installed on the inner side of the conveyor frame 1, and a worm gear 5 is fixedly sleeved on each of the two drive shafts of the conveyor 4, a reset mechanism 6 is engaged on the worm gear 5, and the reset mechanism 6 is fixed on the vertical plate on the rear side of the conveyor frame 1;

[0037] A transverse conveying mechanism 7 is installed on the front side of the conveyor frame 1.

[0038] In this embodiment, as Figure 2 , Figure 3 As shown, the trigger ejection mechanism 3 includes a housing 31 fixed on the inner wall of the through groove 2, an abutment rod 32 inserted through the housing 31, a compression spring 33 movably sleeved on the outer side of the abutment rod 32, one end of the compression spring 33 abutting against the inner wall of the housing 31, and the other end of the compression spring 33 fixed on the outer side of the abutment rod 32.

[0039] A sliding sleeve 34 is fixedly sleeved on the outer side of the abutment rod 32. The sliding sleeve 34 is slidably connected in the limiting groove 35 opened in the inner wall of the outer shell 31. A ring sleeve 36 is fixedly sleeved at equal distances in a straight line on the side front end of the abutment rod 32.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the reset mechanism 6 includes a rotating shaft 61 rotatably mounted on the rear vertical plate of the conveyor frame 1. Worm gears 62 are fixedly sleeved on both ends of the side of the rotating shaft 61, and the two worm gears 62 respectively mesh with two worms 5.

[0041] A ring groove 63 is provided on the side of the rotating shaft 61. A transmission gear 64 is movably sleeved on the inner wall of the ring groove 63. The transmission gear 64 meshes with the ring sleeve 36. A circular groove 65 is provided on both end faces of the transmission gear 64. Four wedge blocks 66 are fixedly connected in a ring at equal intervals in the circular groove 65. An arc plate 67 is abutted on the side of the wedge block 66. The end of the arc plate 67 away from the wedge block 66 is hinged to the inner wall of the ring groove 63.

[0042] A return spring telescopic rod 68 is hinged between the inner side of the arc plate 67 and the inner wall of the annular groove 63. A protrusion 69 is fixedly connected to the side of the arc plate 67. An arc plate 610 is abutted against the surface of the protrusion 69. Four arc plates 610 are equidistantly and annularly hinged to the inner wall of the annular groove 63. A connecting plate 617 is hinged between each pair of adjacent arc plates 610.

[0043] A roller 611 is provided on the end of the arc plate 610 away from the annular groove 63. A sleeve 612 is fitted around the outer side of the four rollers 611. The sleeve 612 is located outside the annular groove 63. A T-shaped plate 613 is fixedly connected to the outer side of the sleeve 612. The rear side of the horizontal plate of the T-shaped plate 613 is hinged to the rear vertical plate of the conveyor frame 1. A limit spring telescopic plate 618 is fixedly connected to the top surface of the horizontal plate of the T-shaped plate 613, and the upper end of the limit spring telescopic plate 618 is an inclined surface. The telescopic plate 618 abuts against the front end face of the sliding sleeve 34. The rear side of the T-shaped plate 613 is hinged to the rear vertical plate of the conveyor frame 1. The front side of the T-shaped plate 613 is hinged to the hinge block 615, and the hinge block 615 is set between the two transmission belts of the conveyor 4. The left and right sides of the hinge block 615 are connected to the vertical grooves of the L-shaped limit plate 616. The rear side of the L-shaped limit plate 616 is fixed to the rear vertical plate of the conveyor frame 1.

[0044] In this embodiment, as Figure 2 As shown, there are three first spring telescopic rods 614, and the length of the three first spring telescopic rods 614 decreases from left to right to 0.8 times the length of the adjacent first spring telescopic rod 614 on its left. By changing the length of the first spring telescopic rod 614, the position of the connection point between the first spring telescopic rod 614 and the lower side of the T-shaped plate 613 is changed, so that the T-shaped plate 613 on the right can deflect even under a smaller gravity.

[0045] In this embodiment, as Figure 1 , Figure 6 , Figure 7 As shown, the transverse conveying mechanism 7 includes a horizontal plate 71 disposed on the conveyor frame 1, and a belt conveyor 72 is obliquely mounted on the horizontal plate 71;

[0046] Two baffle plates 73 are symmetrically fixedly connected to the horizontal plate 71. A spring plate 74 is fixedly connected to the left baffle plate 73. A pull rod 75 is hinged to the baffle plate 73. A torsion spring 76 is provided on the pull rod 75. The pull rod 75 is rotatably connected to the left horizontal plate 71 through the torsion spring 76.

[0047] A rectangular groove 710 is provided on the right side of the barrier plate 73. A baffle 77 is hinged to the upper side of the inner wall of the rectangular groove 710. A counterweight 78 is abutted on the right side of the baffle 77. A traction rope 79 is fixedly connected to one end of the counterweight 78, and the end of the traction rope 79 away from the counterweight 78 is fixed to the pull rod 75.

[0048] In this embodiment, as Figure 1 , Figure 6 , Figure 7 As shown, the pull rod 75 consists of two L-shaped connecting rods, and the pull rod 75 is located on the upper side of the barrier plate 73.

[0049] In this embodiment, as Figure 1, Figure 6 , Figure 7 As shown, the barrier plate 73 is L-shaped.

[0050] The method of use and advantages of the present invention: The working process of the weight sorting machine for logistics sorting is as follows:

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0052] S1: When users sort express packages by weight, they first feed the boxes to the conveyor 4 at intervals, ensuring a certain distance between each box. While the conveyor 4 is running, the worm gear 5 drives the rotating shaft 61 to rotate clockwise. This causes the arc plate 67 on the rotating shaft 61 to push the wedge block 66 to rotate, which in turn drives the transmission gear 64 to rotate clockwise. This causes the contact rod 32 inside the ring 36 to move towards the rear end of the inner wall of the outer shell 31, keeping the compression spring 33 in a continuously compressed state. Then, the conveyor 4 indirectly feeds the boxes to the upper side of the first hinge block 615 on the left. The weight of the boxes themselves then presses the hinge block 615 downwards, causing... One end of the T-shaped plate 613 deflects downward, causing the limiting spring telescopic plate 618 to deflect downward, releasing its restriction on the sliding sleeve 34. When one end of the T-shaped plate 613 deflects downward, it pulls the sleeve 612 to move downward and abut against the arc plate 610, causing the arc plate 610 to deflect into the annular groove 63. During the deflection of the arc plate 610, the arc plate 610 squeezes the protrusion 69, causing the protrusion 69 to deflect close to the central axis of the rotating shaft 61, pulling one end of the arc plate 67 to separate from the wedge block 66, releasing the restriction of the arc plate 67 on the wedge block 66. Under the action of the compression spring 33's restoring force, the abutment rod 32 pops out from the inside of the outer shell 31, pushing the logistics box onto the belt conveyor 72.

[0053] Conversely, if the weight of the logistics box is insufficient to deflect the limiting spring telescopic plate 618 on the leftmost T-shaped plate 613 downwards, the logistics box continues to move to the right under the action of the conveyor 4. When it reaches the middle hinge block 615 and the upper side of the T-shaped plate 613, the length of the first spring telescopic rod 614 on the middle T-shaped plate 613 is shorter than the length of the first spring telescopic rod 614 from the left. This reduces the supporting force of the corresponding T-shaped plate 613 on the logistics box. When the logistics box can deflect the middle T-shaped plate 613 downwards to a specified angle, the middle abutment rod 32 can push the logistics box onto the corresponding belt conveyor 72. Similarly, if the middle T-shaped plate 613 does not deflect, the logistics box continues to move to the right, allowing the sorting machine to sort logistics boxes of different weights.

[0054] S2: When the abutment rod 32 pops out from the housing 31, the conveyor 4 drives the rotating shaft 61 to rotate clockwise through the worm gear 5 on it, so that the arc plate 67 on the rotating shaft 61 pushes the wedge block 66 to rotate, which drives the transmission gear 64 to rotate clockwise in sync, and drives the abutment rod 32 in the ring sleeve 36 to move towards the rear end of the inner wall of the housing 31, so that the abutment rod 32 returns to its original position and retracts into the housing 31, and the sliding sleeve 34 is once again locked on the rear side of the limit spring telescopic plate 618;

[0055] S3: When the logistics box enters the corresponding belt conveyor 72, since the belt conveyor 72 is inclined, the logistics box will move along the right-side baffle 73. When the logistics box does not contact one end of the spring plate 74 during the movement, that is, the logistics box is relatively short in lateral length, and it is directly conveyed longitudinally into the corresponding collection box. However, when the logistics box is slightly longer, the logistics box abuts against the pull rod 75 when it moves on the belt conveyor 72, so that the pull rod 75 and the traction rope 79 work together to pull the counterweight 78 to deflect, releasing its resistance to the baffle 77. At this time, under the action of the conveying force of the belt conveyor 72, the logistics box slides along the inner side of the spring plate 74 and squeezes the baffle 77, causing it to deflect and open, so that the slightly longer logistics box flows to the belt conveyor 72 on the right side of the right baffle 73, and the logistics box is sorted according to its length.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weight sorting machine for logistics sorting, comprising a conveyor frame (1), characterized in that: A through groove (2) is provided on the vertical plate on the rear side of the conveyor frame (1). A trigger ejection mechanism (3) is provided on the inner wall of the through groove (2). A conveyor (4) is installed on the inner side of the conveyor frame (1). A worm gear (5) is fixedly sleeved on both drive shafts of the conveyor (4). A reset mechanism (6) is engaged on the worm gear (5), and the reset mechanism (6) is fixed on the vertical plate on the rear side of the conveyor frame (1). A transverse conveying mechanism (7) is installed on the front side of the conveyor frame (1); The trigger ejection mechanism (3) includes a housing (31) fixed on the inner wall of the through groove (2), an abutment rod (32) inserted through the housing (31), a compression spring (33) movably sleeved on the outer side of the abutment rod (32), one end of the compression spring (33) abutting against the inner wall of the housing (31), and the other end of the compression spring (33) fixed on the outer side of the abutment rod (32); The outer side of the abutment rod (32) is fixedly sleeved with a sliding sleeve (34), and the sliding sleeve (34) is slidably connected in the limiting groove (35) opened in the inner wall of the outer shell (31). The front end of the side of the abutment rod (32) is fixedly sleeved with a ring sleeve (36) at equal distances in a straight line. The reset mechanism (6) includes a rotating shaft (61) rotatably mounted on the rear vertical plate of the conveyor frame (1). Worm gears (62) are fixedly sleeved on both ends of the side of the rotating shaft (61), and the two worm gears (62) mesh with two worms (5) respectively. The rotating shaft (61) has an annular groove (63) on its side. A transmission gear (64) is movably sleeved on the inner wall of the annular groove (63). The transmission gear (64) meshes with the ring sleeve (36). A circular groove (65) is provided on both end faces of the transmission gear (64). Four wedge blocks (66) are fixedly connected in a ring at equal intervals in the circular groove (65). The sides of the wedge blocks (66) abut against an arc plate (67). The end of the arc plate (67) away from the wedge blocks (66) is hinged to the inner wall of the annular groove (63). A return spring telescopic rod (68) is hinged between the inner side of the arc plate (67) and the inner wall of the annular groove (63). A protrusion (69) is fixedly connected to the side of the arc plate (67). An arc plate (610) is abutted against the surface of the protrusion (69). The four arc plates (610) are equidistantly hinged in a ring on the inner wall of the annular groove (63). A connecting plate (617) is hinged between each pair of adjacent arc plates (610). Rollers (611) are provided on the end of the arc plate (610) away from the annular groove (63). A sleeve (612) is fitted around the outer side of each of the four rollers (611). The sleeve (612) is located outside the annular groove (63). A T-shaped plate (613) is fixedly connected to the outer side of the sleeve (612). The rear side of the horizontal plate of the T-shaped plate (613) is hinged to the rear vertical plate of the conveyor frame (1). A limit spring telescopic plate (618) is fixedly connected to the top surface of the horizontal plate of the T-shaped plate (613), and the upper end of the limit spring telescopic plate (618) is an inclined surface. The limiting spring telescopic plate (618) abuts against the front end face of the sliding sleeve (34). The rear side of the T-shaped plate (613) is hinged to the rear vertical plate of the conveyor frame (1). The front side of the T-shaped plate (613) is hinged to the hinge block (615), and the hinge block (615) is set between the two transmission belts of the conveyor (4). The vertical grooves on the left and right sides of the hinge block (615) are overlapped with L-shaped limiting plates (616). The rear side of the L-shaped limiting plate (616) is fixed to the rear vertical plate of the conveyor frame (1).

2. The weight sorting machine for logistics sorting according to claim 1, characterized in that: The number of the first spring telescopic rods (614) is three, and the length of the three first spring telescopic rods (614) decreases from left to right to 0.8 times the length of the first spring telescopic rod (614) adjacent to it on the left.

3. A weight sorting machine for logistics sorting according to claim 2, characterized in that: The transverse conveying mechanism (7) includes a horizontal plate (71) disposed on the conveyor frame (1), and a belt conveyor (72) is obliquely mounted on the horizontal plate (71). Two baffle plates (73) are symmetrically fixedly connected to the horizontal plate (71). A spring plate (74) is fixedly connected to the baffle plate (73) on the left side. A pull rod (75) is hinged to the baffle plate (73). A torsion spring (76) is provided on the pull rod (75), and the pull rod (75) is rotatably connected to the horizontal plate (71) on the left side through the torsion spring (76). A rectangular groove (710) is provided on the right-side barrier plate (73). A baffle (77) is hinged to the upper side of the inner wall of the rectangular groove (710). A counterweight (78) is abutted on the right side of the baffle (77). A traction rope (79) is fixedly connected to one end of the counterweight (78), and the end of the traction rope (79) away from the counterweight (78) is fixed to the pull rod (75).

4. A weight sorting machine for logistics sorting according to claim 3, characterized in that: The pull rod (75) consists of two L-shaped connecting rods, and the pull rod (75) is on the upper side of the barrier plate (73).

5. A weight sorting machine for logistics sorting according to claim 4, characterized in that: The barrier plate (73) is L-shaped.

6. A method of using a weight sorting machine for logistics sorting, characterized in that, Using the weight sorting machine for logistics sorting as described in claim 5 includes the following steps: S1: When users sort express packages by weight, they first transport the logistics boxes to the conveyor (4) at intervals to ensure that there is a certain distance between each logistics box. When the conveyor (4) is running, the worm gear (5) on it drives the rotating shaft (61) to rotate clockwise, so that the arc plate (67) on the rotating shaft (61) pushes the wedge block (66) to rotate, which drives the transmission gear (64) to rotate clockwise in sync, which drives the abutment rod (32) in the ring (36) to move towards the rear end of the inner wall of the outer shell (31), so that the compression spring (33) is in a continuous compression state. Then, the logistics box is indirectly transported to the upper side of the first hinge block (615) on the left by the conveyor (4). The weight of the logistics box itself presses the hinge block (615) to move downward, which drives the T-shaped plate (615) to move downward. 3) One end deflects downward, causing the limiting spring telescopic plate (618) to deflect downward, releasing its limitation on the sliding sleeve (34). When one end of the T-shaped plate (613) deflects downward, it pulls the sleeve (612) downward to abut against the arc plate (610), causing the arc plate (610) to deflect into the annular groove (63) and fit. During the deflection of the arc plate (610), the arc plate (610) squeezes the protrusion (69), causing the protrusion (69) to deflect close to the central axis of the rotating shaft (61), pulling one end of the arc plate (67) to separate from the wedge block (66), releasing the limitation of the arc plate (67) on the wedge block (66). Under the action of the compression spring (33) reset force, the abutment rod (32) pops out from the inside of the outer shell (31) and pushes the logistics box onto the belt conveyor (72). Conversely, if the weight of the logistics box cannot press down the limit spring telescopic plate (618) on the leftmost T-shaped plate (613), the logistics box continues to move to the right under the action of the conveyor (4). When it reaches the middle hinge block (615) and the upper side of the T-shaped plate (613), since the length of the first spring telescopic rod (614) on the middle T-shaped plate (613) is shorter than the length of the first spring telescopic rod (614) from the left, the supporting force of the corresponding T-shaped plate (613) on the logistics box is reduced. When the logistics box can press down the middle T-shaped plate (613) to the specified angle, the middle abutment rod (32) can push the logistics box onto the corresponding belt conveyor (72). Similarly, if the middle T-shaped plate (613) does not deflect, the logistics box continues to move to the right, so that the sorting machine sorts the logistics boxes of different weights. S2: When the abutment rod (32) pops out from the housing (31), the conveyor (4) drives the rotating shaft (61) to rotate clockwise through the worm gear (5) on it, so that the arc plate (67) on the rotating shaft (61) pushes the wedge block (66) to rotate, which drives the transmission gear (64) to rotate clockwise in sync, and drives the abutment rod (32) in the ring sleeve (36) to move towards the rear end of the inner wall of the housing (31), so that the abutment rod (32) returns to its original position and retracts into the housing (31), and the sliding sleeve (34) is once again locked on the rear side of the limit spring telescopic plate (618); S3: When the logistics box enters the corresponding belt conveyor (72), since the belt conveyor (72) is inclined, the logistics box will move along the right side of the baffle plate (73). When the logistics box does not contact one end of the spring plate (74) during the movement, that is, the logistics box is short in the horizontal direction and is directly transported to the corresponding collection box in the vertical direction. However, when the logistics box is slightly longer, the logistics box will abut against the pull rod (75) when it moves on the belt conveyor (72), so that the pull rod (75) and the traction rope (79) work together to pull the counterweight (78) to deflect, and release its resistance to the baffle plate (77). At this time, the logistics box slides along the inner side of the spring plate (74) and squeezes the baffle plate (77) under the action of the conveying force of the belt conveyor (72), so that it deflects and opens, and then the slightly longer logistics box flows to the belt conveyor (72) on the right side of the right side of the baffle plate (73) and the logistics box is sorted according to the length of the logistics box.

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