Offline packaging device for logistics warehouse and use method thereof

Abstract

The invention discloses an offline packaging device for a logistics warehouse and a method for using the device, and belongs to the technical field of cargo packaging. The offline packaging device for a logistics warehouse comprises a first conveyor belt, a second conveyor belt, a base and a transfer device, wherein a linear track is provided on the upper end face of the base, and the transfer device moves back and forth along the linear track; the first conveyor belt and the second conveyor belt are both on the same side of the linear track; a height-limiting door is provided on the first conveyor belt; a first sensor and a second sensor are provided in sequence between the height-limiting door and the output end of the first conveyor belt; a pallet is provided on the side of the transfer device facing the conveyor belt, and the pallet is located between the output end of the first conveyor belt and the input end of the second conveyor belt; a logistics box is accommodated at the input end of the second conveyor belt, and a box cover placing device is provided between the logistics box and the output end of the second conveyor belt; the height of the height-limiting door is equal to the internal height of the logistics box; the width of the height-limiting door is equal to the internal width of the logistics box; the distance between the two sensors is equal to the length inside the logistics box.

Description

Technical Field

[0001] The present invention belongs to the technical field of cargo packaging, and specifically refers to an offline packaging device in a logistics warehouse and a use method thereof. Background Art

[0002] In my country, with the rapid development of online sales, the logistics industry is also developing rapidly, and with it comes a large number of goods that need to be packaged. At first, the goods were packed one by one in the logistics warehouse by the staff manually, which was not only time-consuming and labor-intensive, but also inefficient and very error-prone. So later some automated equipment appeared for automated packaging. Ordinary automated packaging equipment generally has complex structures and other problems. Moreover, in the existing technology, the size of the goods is not detected before the automated packaging, which results in the goods being unable to be completely packaged in the box during the automatic packaging process, and some even cause damage to the goods and equipment. Summary of the invention

[0003] In order to solve the technical problem in the prior art that cargo size detection is not performed when cargo is packaged, the present invention provides an offline packaging device for a logistics warehouse and a method for using the device.

[0004] The technical solution adopted by the present invention is:

[0005] An offline packaging device for a logistics warehouse comprises a first conveyor belt, a second conveyor belt, a base and a transfer device, wherein a linear track is provided on the upper end surface of the base, and the transfer device moves back and forth along the linear track;

[0006] The first conveyor belt and the second conveyor belt are both on the same side of the linear track;

[0007] A height-limiting door is provided on the first conveyor belt; a first sensor and a second sensor are provided in sequence between the height-limiting door and the output end of the first conveyor belt;

[0008] A support plate is provided on the side of the transfer device facing the conveyor belt, and the support plate is located between the output end of the first conveyor belt and the input end of the second conveyor belt;

[0009] A logistics box is placed at the input end of the second conveyor belt, and a box cover placement device is provided between the logistics box and the output end of the second conveyor belt;

[0010] The height of the height-limiting door is equal to the height inside the logistics box; the width of the height-limiting door is equal to the width inside the logistics box; the distance between the first sensor and the second sensor is equal to the length inside the logistics box.

[0011] The beneficial effects of the present invention are as follows: by setting a height-limiting door, the goods are first detected, that is, the height dimension of the goods is detected while the width dimension of the goods is also detected. Then, the goods are secondly detected by the joint work of the first sensor and the second sensor, that is, when the goods interrupt the second sensor from receiving the sensing signal:

[0012] If the first sensor can receive the sensing signal, it means that the length of the cargo is less than the distance between the first sensor and the second sensor, that is, the length of the cargo meets the cargo length requirement that the logistics box can load; otherwise, it means that the length of the cargo does not meet the requirement.

[0013] An offline packaging device for a logistics warehouse not only completes the function of size detection of goods, but also achieves the effect of automatic packaging.

[0014] Furthermore, the height-limiting door includes a horizontally arranged height-limiting crossbar, and the left and right ends of the height-limiting crossbar are detachably connected to a vertically downward width-limiting rod, and the side of the width-limiting rod facing away from the first conveyor belt is detachably connected to an adjusting rod, the adjusting rod is arranged horizontally, and the lower end face of the adjusting rod is detachably connected to a fixing rod, and the lower part of the fixing rod is fixed to the side end face of the first conveyor belt. The height-limiting crossbar, the width-limiting rod, the adjusting rod and the fixing rod are all connected to each other by threaded connections to realize the detachable function, thereby achieving the size change of the height-limiting door and meeting the requirements of detecting different sizes.

[0015] Furthermore, the first sensor includes a first transmitter and a first receiver, the first transmitter is fixed on one side of the first conveyor belt, the first receiver is fixed on the other side of the first conveyor belt, and the first transmitter and the first receiver are set correspondingly; the second sensor includes a second transmitter and a second receiver, the second transmitter is fixed on one side of the first conveyor belt, the second receiver is fixed on the other side of the first conveyor belt, and the second transmitter and the second receiver are set correspondingly. The transmitter and the receiver are fixed separately on the left and right sides of the conveyor belt, and are set one by one, which has higher sensing accuracy than the sensor of a single device.

[0016] Furthermore, the transfer device includes a frame, and a driving wheel is provided at the bottom of the frame; the driving wheel moves on a linear track; the driving wheel is connected to a driving motor, and the driving motor drives the driving wheel to rotate, and the driving motor is built into the frame.

[0017] A driving screw is provided on the side of the transfer device facing the conveyor belt, and a guide rod is provided on each side of the driving screw. The driving screw and the guide rod are both vertically arranged; the driving screw is connected to a screw motor, and the screw motor drives the driving screw to rotate, and the screw motor is built into the frame.

[0018] During the movement of the transfer device, the driving screw rotates to ensure that the goods are lifted upward while remaining flat.

[0019] A connecting ear is fixed on the side of the support plate facing the driving screw, and a guide ear is fixed on each side of the connecting ear; the connecting ear ring is sleeved on the outside of the driving screw and threadedly connected, and the guide ear ring is sleeved on the outside of the guide rod. The guide ear ensures the stability of the support plate when it moves up and down.

[0020] Furthermore, an electric push rod is provided on the top of the transfer device, and a push plate is vertically fixed on the side of the electric push rod facing the conveyor belt, and the push plate is located above the pallet. When the goods are moved to the input end of the second conveyor belt, the electric push rod extends forward, and the push plate pushes the goods into the logistics box.

[0021] Furthermore, the box cover placement device comprises a main body, wherein a main groove is provided in the main body, and the upper and lower end surfaces communicate with each other, and the box cover is placed in the main groove;

[0022] The input end and the output end of the main body facing the second conveyor belt are each provided with a slot, the slot passes through the inner and outer sides of the main body, and a card is slidably connected in the slot; one end of the card is located in the main slot and below the box cover. The card on both sides of the main body is extended and retracted by an electric telescopic rod, and the electric telescopic rod is built into the main body.

[0023] Furthermore, a third sensor is provided below the box cover placement device, and the third sensor includes a third transmitter and a third receiver, the third transmitter is fixed to one side of the second conveyor belt, and the third receiver is fixed to the other side of the second conveyor belt, and the third transmitter and the third receiver are provided correspondingly. The third sensor is mainly used to detect whether the goods have arrived below the box cover placement device, so as to control the time when the pallet is extended, that is, the time when the box cover falls.

[0024] Furthermore, a box cover tightening device is provided between the box cover placement device and the output end of the second conveyor belt, and the box cover tightening device includes a cover body, and the lower end face of the cover body is an arc-shaped end face, and the height of the arc-shaped end face close to the input end of the second conveyor belt is higher than the height of the arc-shaped end face close to the output end of the second conveyor belt. When the logistics box passes under the box cover tightening device, since the lower end face of the box cover tightening device is an arc-shaped end face, and the distance between the arc-shaped end face and the second conveyor belt gradually decreases, the box cover that was originally not tightened is pressed downward and tightened with the logistics box cover, thereby achieving the effect of automatic box sealing.

[0025] A method for using an offline packaging device in a logistics warehouse, comprising:

[0026] S1, placing goods at the input end of the first conveyor belt, placing a logistics box at the input end of the second conveyor belt, and placing a box cover in the box cover placement device; the first sensor stops working, and the second sensor and the third sensor start working;

[0027] S2, the first conveyor belt starts to convey the goods, and the goods pass through the height-limiting door, the first sensor, and the second sensor in sequence;

[0028] When the goods interrupt the second receiver from receiving the signal of the second transmitter, the first conveyor belt stops conveying, and the first sensor starts working; at this time, if the first receiver receives the signal of the first transmitter, the first conveyor belt resumes conveying; the goods are finally conveyed to the pallet;

[0029] S3, the transfer device starts to move from the output end of the first conveyor belt to the input end of the second conveyor belt; during the movement, the drive screw starts to rotate and drives the pallet to move upward to a height higher than the upper end surface of the logistics box;

[0030] S4, the electric push rod drives the push plate to move forward and push the goods into the logistics box;

[0031] S5, the second conveyor belt starts to convey the logistics box. When the logistics box passes under the box cover placement device and interrupts the third receiver from receiving the signal of the third transmitter, the card plate extends outward from the main body, and the box cover falls and covers the logistics box;

[0032] S6. The second conveyor belt conveys the logistics box to pass under the box cover tightening device, and the box cover is pressed down and tightened on the logistics box through the gradually lowering height of the arc-shaped end surface at the bottom of the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of an offline packaging device for a logistics warehouse according to an embodiment of the present invention.

[0034] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0035] Figure 3 Schematic diagram of the structure of the transfer device in an embodiment of the present invention.

[0036] Figure 4 Schematic diagram of the structure of the support plate in an embodiment of the present invention.

[0037] Figure 5 Schematic diagram of the structure of the box cover placement device in an embodiment of the present invention.

[0038] 1-first conveyor belt, 2-second conveyor belt, 3-base, 4-transfer device, 5-linear track, 6-height limit door, 7-first sensor, 8-second sensor, 9-pallet, 10-logistics box, 11-box cover placement device, 12-height limit cross bar, 13-width limit bar, 14-adjusting rod, 15-fixing rod, 16-frame, 17-driving wheel, 18-driving screw, 19-guide rod, 20-connecting ear, 21-guide ear, 22-electric push rod, 23-push plate, 24-main body, 25-main groove, 26-box cover, 27-slot, 28-card plate, 29-third sensor, 30-box cover tightening device, 31-cover body. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] An offline packaging device for a logistics warehouse comprises a first conveyor belt 1, a second conveyor belt 2, a base 3 and a transfer device 4. A linear track 5 is provided on the upper end surface of the base 3, and the transfer device 4 moves back and forth along the linear track 5.

[0041] The first conveyor belt 1 and the second conveyor belt 2 are both on the same side of the linear track 5 ; the first conveyor belt 1 and the linear track 5 are parallel to each other, and the second conveyor belt 2 and the linear track 5 are perpendicular to each other.

[0042] A height limiting door 6 is provided on the first conveyor belt 1; a first sensor 7 and a second sensor 8 are provided in sequence between the height limiting door 6 and the output end of the first conveyor belt 1;

[0043] A support plate 9 is provided on the side of the transfer device 4 facing the conveyor belt, that is, facing the side of the transfer device 4 facing the first conveyor belt 1 and the second conveyor belt 2. The support plate 9 is located between the output end of the first conveyor belt 1 and the input end of the second conveyor belt 2;

[0044] A logistics box 10 is accommodated at the input end of the second conveyor belt 2, and a box cover placement device 11 is provided between the logistics box 10 and the output end of the second conveyor belt 2;

[0045] The height of the height-limiting door 6 is equal to the height inside the logistics box 10 ; the width of the height-limiting door 6 is equal to the width inside the logistics box 10 ; the distance between the first sensor 7 and the second sensor 8 is equal to the length inside the logistics box 10 .

[0046] By setting the height limit door 6, the goods are first detected, that is, the height and width of the goods are detected at the same time. Then, the first sensor 7 and the second sensor 8 work together to detect the goods for the second time, that is, when the goods interrupt the second sensor 8 to receive the sensing signal:

[0047] If the first sensor 7 can receive the sensing signal, it means that the length of the cargo is less than the distance between the first sensor 7 and the second sensor 8, that is, the length of the cargo meets the cargo length requirement that the logistics box 10 can load; otherwise, it means that the length of the cargo does not meet the requirement.

[0048] An offline packaging device for a logistics warehouse not only completes the function of size detection of goods, but also achieves the effect of automatic packaging.

[0049] The height-limiting door 6 includes a horizontally arranged height-limiting crossbar 12, and the left and right ends of the height-limiting crossbar 12 are each detachably connected to a vertically downward width-limiting rod 13, and the side of the width-limiting rod 13 facing away from the first conveyor belt 1 is detachably connected to an adjusting rod 14, and the adjusting rod 14 is arranged horizontally, and the lower end face of the adjusting rod 14 is detachably connected to a fixing rod 15, and the lower part of the fixing rod 15 is fixed to the side end face of the first conveyor belt 1. The height-limiting crossbar 12, the width-limiting rod 13, and the adjusting rod 14 each have a rectangular array of threaded holes for adjusting the position. The height-limiting crossbar 12, the width-limiting rod 13, the adjusting rod 14, and the fixing rod 15 are all connected to each other by threads to realize the detachable function, so as to achieve the size change of the height-limiting door 6 and meet the requirements of detecting different sizes.

[0050] The first sensor 7 includes a first transmitter and a first receiver, the first transmitter is fixed on one side of the first conveyor belt 1, the first receiver is fixed on the other side of the first conveyor belt 1, and the first transmitter and the first receiver are set correspondingly; the second sensor 8 includes a second transmitter and a second receiver, the second transmitter is fixed on one side of the first conveyor belt 1, the second receiver is fixed on the other side of the first conveyor belt 1, and the second transmitter and the second receiver are set correspondingly. The transmitter and the receiver are fixed separately on the left and right sides of the conveyor belt, and are set one by one, which has higher sensing accuracy than the sensor of a single device.

[0051] The transfer device 4 includes a frame 16 , and a driving wheel 17 is provided at the bottom of the frame 16 ; the driving wheel 17 moves on the linear track 5 ; the driving wheel 17 is connected to a driving motor, and the driving motor drives the driving wheel 17 to rotate, and the driving motor is built into the frame 16 .

[0052] A driving screw 18 is provided on the side of the transfer device 4 facing the conveyor belt, and a guide rod 19 is provided on both sides of the driving screw 18. The driving screw 18 and the guide rod 19 are both vertically arranged; the driving screw 18 is connected to a screw motor, and the screw motor drives the driving screw 18 to rotate, and the screw motor is built into the frame 16.

[0053] During the movement of the transfer device 4, the driving screw 18 is rotated to achieve that the goods are lifted upward while being kept flat.

[0054] A connecting ear 20 is fixed on the side of the support plate 9 facing the driving screw 18, and a guide ear 21 is fixed on both sides of the connecting ear 20; the connecting ear 20 is sleeved on the outside of the driving screw 18 and threadedly connected, and the guide ear 21 is sleeved on the outside of the guide rod 19. The guide ear 21 ensures the stability of the support plate 9 when it moves up and down.

[0055] An electric push rod 22 is provided on the top of the transfer device 4, and a push plate 23 is vertically fixed on the side of the electric push rod 22 facing the conveyor belt, and the push plate 23 is located above the pallet 9. When the goods are moved to the input end of the second conveyor belt 2, the electric push rod 22 extends forward, and the push plate 23 pushes the goods into the logistics box 10.

[0056] The box cover placement device 11 includes a main body 24, and a main groove 25 is provided in the main body 24, and the upper and lower end surfaces are communicated, and the box cover 26 is placed in the main groove 25;

[0057] The main body 24 has a slot 27 at the input end and the output end facing the second conveyor belt 2, respectively. The slot 27 passes through the inner side and the outer side of the main body 24, and a card plate 28 is slidably connected in the slot 27; one end of the card plate 28 is located in the main groove 25 and below the box cover 26. The card plates 28 on both sides of the main body 24 are extended and retracted by electric telescopic rods, and the electric telescopic rods are built into the main body 24.

[0058] A third sensor 29 is provided below the box cover placement device 11. The third sensor 29 includes a third transmitter and a third receiver. The third transmitter is fixed to one side of the second conveyor belt 2, and the third receiver is fixed to the other side of the second conveyor belt 2. The third transmitter and the third receiver are provided correspondingly. The third sensor 29 is mainly used to detect whether the goods have arrived below the box cover placement device 11, so as to control the time when the card plate 28 is extended, that is, the time when the box cover 26 falls.

[0059] A box cover tightening device 30 is provided between the box cover placement device 11 and the output end of the second conveyor belt 2. The box cover tightening device 30 includes a cover body 31. The lower end face of the cover body 31 is an arc-shaped end face. The height of the arc-shaped end face close to the input end of the second conveyor belt 2 is higher than the height of the arc-shaped end face close to the output end of the second conveyor belt 2. When the logistics box 10 passes under the box cover tightening device 30, since the lower end face of the box cover tightening device 30 is an arc-shaped end face, and the distance between the arc-shaped end face and the second conveyor belt 2 gradually decreases, the box cover 26 that was originally not tightened is pressed downward and tightened with the logistics box 10, achieving the effect of automatic box sealing.

[0060] A method for using an offline packaging device in a logistics warehouse, comprising:

[0061] S1. Place goods at the input end of the first conveyor belt 1, place the logistics box 10 at the input end of the second conveyor belt 2, and place the box cover 26 in the box cover placement device 11; the first sensor 7 stops working, and the second sensor 8 and the third sensor 29 start working; a conveyor belt can be set on one side of the input end of the second conveyor belt 2 to convey the logistics box 10 to the input end of the second conveyor belt 2. A conveyor belt can also be set on one side of the box cover placement device 11 to convey the box cover 26 into the box cover placement device 11.

[0062] S2, the first conveyor belt 1 starts to convey the goods, and the goods pass through the height-limiting door 6, the first sensor 7 and the second sensor 8 in sequence;

[0063] When the goods are limited in size when passing through the height-limiting door 6 and cannot pass through, the staff can manually take the goods away, or an electric push rod can be set on one side of the first conveyor belt 1 to remove the goods from the first conveyor belt 1.

[0064] When the goods pass through the height-limiting door 6 and the second receiver is interrupted from receiving the signal of the second transmitter, the first conveyor belt 1 stops conveying and the first sensor 7 starts working;

[0065] At this time, if the first receiver receives the signal from the first transmitter, the first conveyor belt 1 resumes transmission; the goods are finally conveyed to the pallet 9;

[0066] If the first receiver cannot receive the signal from the first transmitter, the first conveyor belt 1 stops conveying 5 seconds after it resumes conveying. At this time, the goods can be taken away manually by the staff, or an electric push rod can be set on one side of the first conveyor belt 1 to remove the goods from the first conveyor belt 1. The conveying time after the first conveyor belt 1 resumes conveying can be changed according to the actual situation, as long as all the goods can pass through the second sensor 8.

[0067] S3, the transfer device 4 starts to move from the output end of the first conveyor belt 1 to the input end of the second conveyor belt 2; during the movement, the driving screw 18 starts to rotate and drives the pallet 9 to move upward to a height higher than the upper end surface of the logistics box 10;

[0068] S4, the electric push rod 22 drives the push plate 23 to move forward, pushing the goods into the logistics box 10;

[0069] S5, the second conveyor belt 2 starts to convey the logistics box 10. When the logistics box 10 passes under the box cover placement device 11 and interrupts the third receiver from receiving the signal of the third transmitter, the card plate 28 extends outward from the main body 24, and the box cover 26 falls and covers the logistics box 10.

[0070] S6. The second conveyor belt 2 conveys the logistics box 10 to pass under the box cover tightening device 30. As the height of the arc-shaped end surface at the bottom of the cover body 31 gradually decreases, the box cover 26 is pressed downward and tightened on the logistics box 10.

[0071] Various control operations in the present invention are all completed by the PLC controller.

[0072] It should be understood that although the present invention has been described in relatively detail through specific implementation methods, these descriptions are not limitations on the patent scope of the present invention. Any changes in form and details made on this basis that do not exceed the scope of protection of the claims are within the scope of protection of the present invention.

Claims

1. A method for using an offline packaging device in a logistics warehouse, characterized in that: The packaging device comprises a first conveyor belt (1), a second conveyor belt (2), a base (3) and a transfer device (4), and is characterized in that: a linear track (5) is provided on the upper end surface of the base (3), and the transfer device (4) moves back and forth along the linear track (5); The first conveyor belt (1) and the second conveyor belt (2) are both on the same side of the linear track (5); A height limiting door (6) is provided on the first conveyor belt (1); a first sensor (7) and a second sensor (8) are provided in sequence between the height limiting door (6) and the output end of the first conveyor belt (1); the first sensor (7) comprises a first transmitter and a first receiver, and the second sensor (8) comprises a second transmitter and a second receiver. A support plate (9) is provided on the side of the transfer device (4) facing the conveyor belt, and the support plate (9) is located between the output end of the first conveyor belt (1) and the input end of the second conveyor belt (2); an electric push rod (22) is provided on the top of the transfer device (4), and a push plate (23) is vertically fixed on the side of the electric push rod (22) facing the conveyor belt; The input end of the second conveyor belt (2) accommodates a logistics box (10), and a box cover placement device (11) is provided between the logistics box (10) and the output end of the second conveyor belt (2); The height of the height-limiting door (6) is equal to the height inside the logistics box (10); the width of the height-limiting door (6) is equal to the width inside the logistics box (10); the distance between the first sensor (7) and the second sensor (8) is equal to the length inside the logistics box (10); A third sensor (29) is provided below the box cover placement device (11), and the third sensor (29) comprises a third transmitter and a third receiver; The box cover placement device (11) comprises a main body (24), wherein a main groove (25) is provided in the main body (24) and the upper and lower end surfaces communicate with each other, and the box cover (26) is placed in the main groove (25); The main body (24) is provided with a slot (27) at the input end and the output end facing the second conveyor belt (2), the slot (27) passing through the inner side and the outer side of the main body (24), and a card plate (28) is slidably connected in the slot (27); one end of the card plate (28) is located in the main slot (25) and below the box cover (26); The method of use includes: S1, placing goods at the input end of the first conveyor belt (1), placing a logistics box (10) at the input end of the second conveyor belt (2), and placing a box cover (26) in the box cover placement device (11); the first sensor (7) stops working, and the second sensor (8) and the third sensor (29) start working; S2, the first conveyor belt (1) starts to convey the goods, and the goods pass through the height-limiting door (6), the first sensor (7) and the second sensor (8) in sequence; When the goods interrupt the second receiver from receiving the signal from the second transmitter, the first conveyor belt (1) stops conveying and the first sensor (7) starts working; at this time, if the first receiver receives the signal from the first transmitter, the first conveyor belt (1) resumes conveying; the goods are finally conveyed to the pallet (9); S3, the transfer device (4) starts to move from the output end of the first conveyor belt (1) to the input end of the second conveyor belt (2); during the movement, the drive screw (18) starts to rotate and drives the support plate (9) to move upward to a height higher than the upper end surface of the logistics box (10); S4, the electric push rod (22) drives the push plate (23) to move forward, pushing the goods into the logistics box (10); S5, the second conveyor belt (2) starts to convey the logistics box (10), and when the logistics box (10) passes under the box cover placement device (11) and interrupts the third receiver from receiving the signal of the third transmitter, the card plate (28) extends outward from the main body (24), and the box cover (26) falls and covers the top of the logistics box (10); S6. The second conveyor belt (2) conveys the logistics box (10) to pass under the box cover tightening device (30), and the box cover (26) is pressed downward and tightened on the logistics box (10) by the gradually decreasing height of the arc-shaped end surface at the bottom of the cover body (31).

2. The method for using the offline packaging device in a logistics warehouse according to claim 1, characterized in that: The height limiting door (6) comprises a horizontally arranged height limiting cross bar (12), the left and right ends of the height limiting cross bar (12) are detachably connected to a vertically downward width limiting rod (13), the side of the width limiting rod (13) facing away from the first conveyor belt (1) is detachably connected to an adjusting rod (14), the adjusting rod (14) is arranged horizontally, the lower end surface of the adjusting rod (14) is detachably connected to a fixing rod (15), and the lower part of the fixing rod (15) is fixed to the side end surface of the first conveyor belt (1).

3. The method for using the offline packaging device in a logistics warehouse according to claim 1, characterized in that: The first transmitter is fixed to one side of the first conveyor belt (1), the first receiver is fixed to the other side of the first conveyor belt (1), and the first transmitter and the first receiver are arranged correspondingly; the second transmitter is fixed to one side of the first conveyor belt (1), the second receiver is fixed to the other side of the first conveyor belt (1), and the second transmitter and the second receiver are arranged correspondingly.

4. The method for using the offline packaging device in a logistics warehouse according to claim 1, characterized in that: The transfer device (4) comprises a frame (16), and a driving wheel (17) is provided at the bottom of the frame (16); the driving wheel (17) moves on the linear track (5); A driving screw rod (18) is provided on the side of the transfer device (4) facing the conveyor belt, and a guide rod (19) is provided on both sides of the driving screw rod (18), and the driving screw rod (18) and the guide rod (19) are both arranged vertically; A connecting ear (20) is fixed on one side of the support plate (9) facing the driving screw rod (18), and a guide ear (21) is fixed on each side of the connecting ear (20); the connecting ear (20) is sleeved on the outside of the driving screw rod (18) and is threadedly connected, and the guide ear (21) is sleeved on the outside of the guide rod (19).

5. The method for using the offline packaging device in a logistics warehouse according to claim 4, characterized in that: The push plate (23) is located above the supporting plate (9).

6. The method for using the offline packaging device in a logistics warehouse according to any one of claims 1 to 5, characterized in that: The third transmitter is fixed to one side of the second conveyor belt (2), and the third receiver is fixed to the other side of the second conveyor belt (2). The third transmitter and the third receiver are arranged correspondingly.

7. The method for using the offline packaging device in a logistics warehouse according to claim 6, characterized in that: A box cover tightening device (30) is provided between the box cover placement device (11) and the output end of the second conveyor belt (2), the box cover tightening device (30) comprising a cover body (31), the lower end face of the cover body (31) being an arc-shaped end face, the height of the arc-shaped end face close to the input end of the second conveyor belt (2) being higher than the height of the arc-shaped end face close to the output end of the second conveyor belt (2).

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