CN211392914U

CN211392914U - Package turning device

Info

Publication number: CN211392914U
Application number: CN201921900416.3U
Authority: CN
Inventors: 罗通
Original assignee: Sichuan Jishengtang Pharmaceutical Co ltd
Current assignee: Sichuan Jishengtang Pharmaceutical Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-09-01
Anticipated expiration: 2029-11-06

Abstract

The utility model provides an automatic packing turning device through the pay-off conveyer belt, connect material conveyer belt and packing tilting mechanism mutually support, utilizes the mechanical structure of upset guide rail device, effectively realizes the automatic upset of arbitrary angle in the packing carton data send process. The utility model discloses simple structure, transmission efficiency is high, and is with low costs, can extensively be applicable to fields such as medicine, food, machinery, and application scope is wide, and maneuverability is strong.

Description

Package turning device

Technical Field

The utility model belongs to the technical field of carry the turning device, concretely relates to packing turning device.

Background

In the production of pharmaceutical industry, liquid preparations, pills, capsules or tablets are generally bottled or plate-packaged, then are packed in hexahedral packaging boxes, and then are transported to a coding process. In the transmission process of the box-packed medicine to the coding process, the box-packed medicine is generally horizontally conveyed, namely, the surface with the largest area is contacted with the transmission belt, and the two-dimensional code and the production date information are usually printed on the side surface in the on-line automatic coding process. The traditional code printing method is that a box is sorted from the conveying belt by box by manpower, the box is overturned for 90 degrees and then is conveyed to a code printing machine for printing codes, and due to the huge workload, the method for manual operation is very labor-consuming, the production efficiency is low, a large amount of common labor needs to be occupied, the proportion of the labor cost to the total cost is high, and the improvement of the medicine production efficiency of enterprises and the reduction of the production cost are seriously restricted.

At present, an electric control detection box body device is adopted by pharmaceutical enterprises as an automatic box erecting device, so that the situation is overcome, and the working efficiency is improved. When the box body reaches a certain position, the electric control box body detection device sends a turning signal to the turning execution mechanism, so that the turning execution mechanism turns over the corresponding box body to complete the box erecting action. The turnover mechanism is generally a cross or a meter-shaped device, and a motor drives the turnover mechanism to rotate to turn the turnover vertical box; because the restriction of equipment still needs to increase a box body ejecting mechanism after founding the box, causes the loaded down with trivial details complicacy of whole tipping arrangement's structure like this, and production efficiency is still not ideal, and in case the machine breaks down in addition, and the maintenance influences whole automatic production line's normal operating consuming time, and the production line is reformed transform also troublesome, with high costs.

Aiming at the problems, the pharmaceutical industry develops a mechanical structure device to realize automatic turnover of the box body, and the current application situation of the box erecting device is improved to a certain extent. For example, application No. 201320832011.7 discloses a carton erection device for a carton packaging machine, which is capable of conveying a carton from a high position to a low position in a stepwise manner during the conveying process, wherein the front end of the carton body touches a side barrier and is stopped by the barrier, and the slope of the ramp causes the carton body to be erected during the falling process. Although the device can realize the problem that the box body is changed from the flat position to the vertical position better, in the actual use process, the box body is easy to block between the conveying belt and the side baffle plate to cause the blockage on the conveying belt to be manually cleaned. Meanwhile, the box body is in a vertical falling state after being separated from the ramp, and particularly when the box body slides off from the ramp and has overlarge inertia, the impact between the bottom of the box body and the side baffle becomes stronger, the head of the box body is not protected, the box body is easy to damage, the vertical falling section of the box body is easy to incline, the corner of the blank box is damaged, and especially when penicillin bottle liquid preparation is filled in the box body. For example, application No. 201610108219.2 discloses a package turnover device, which is difficult to be applied to parallel automatic packaging lines, has a complicated structure and is difficult to be maintained and modified, and is difficult to be modified at low cost according to the size of the box body, although the box body is vertically turned over by the height difference of a conveyor belt through the arrangement of an arc-shaped turnover mechanism.

To sum up, current packing turning device has the fault rate height, maintains the degree of difficulty big, is difficult to carry out low-cost transformation according to the box body size.

SUMMERY OF THE UTILITY MODEL

For overcoming current packing turning device fault rate high, maintain the degree of difficulty big, be difficult to carry out the technical problem of low-cost transformation according to the box body size, the utility model provides a simple structure, transmission efficiency is high, and is with low costs for pack turning device with the packing carton.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a package turnover device is characterized by comprising a feeding conveyor belt, a receiving conveyor belt and a package turnover mechanism, wherein the transmission tail end of the feeding conveyor belt is connected with the transmission starting end of the receiving conveyor belt through the package turnover mechanism in the same transmission mode, the package turnover mechanism comprises a feeding mechanism, a discharging mechanism, a turnover guide rail device and a package turnover worktable, the end part of the package turnover worktable is connected with the transmission tail end of the feeding conveyor belt, the tail part of the package turnover worktable is connected with the transmission starting end of the receiving conveyor belt, the feeding mechanism is fixedly arranged at the end part of the package turnover worktable, the discharging mechanism is fixedly arranged at the tail part of the package turnover worktable, the feeding mechanism and the discharging mechanism are of polygonal frame structures which are arranged oppositely, the feeding mechanism is connected with the discharging mechanism through the turnover guide rail device, the turnover guide rail device comprises at least 4 turnover guide rails and, the cross section of the turnover cavity is larger than the maximum cross section of the box body, each side of the feeding mechanism and each side of the discharging mechanism are connected with at least 1 turnover guide rail, the end part of each turnover guide rail is connected with the feeding mechanism, the tail part of each turnover guide rail is connected with the discharging mechanism, the included angle formed by the perpendicular line from the connecting point of the end part of any turnover guide rail and the feeding mechanism to the discharging mechanism and the guide rail is equal, and the included angle is an acute angle.

The feeding mechanism and the discharging mechanism are of rectangular frame structures.

The feeding mechanism and the discharging mechanism are fixed at an angle of 90 degrees with each other.

The overturning guide rail of the overturning guide rail device is a curved guide rail.

The number of the turnover guide rails of the turnover guide rail device is 6, and the guide rails are a first guide rail, a second guide rail, a third guide rail, a fourth guide rail, a fifth guide rail and a sixth guide rail in sequence.

The end part of the second guide rail and the end part of the sixth guide rail are both connected with the long edge A of the vertical cross section of the feeding mechanism and divide the long edge A into three equal parts, the end part of the first guide rail is connected with the short edge B of the vertical cross section of the feeding mechanism and divides the short edge B into two equal parts, the end part of the third guide rail and the end part of the fifth guide rail are connected with the opposite edge C of the long edge A and divide the opposite edge C into three equal parts, and the end part of the fourth guide rail is connected with the opposite edge D of the short edge B and divides the opposite edge D into two equal parts.

The tail of the second guide rail and the tail of the sixth guide rail are connected with the long edge a of the vertical cross section of the discharging mechanism, the long edge a is divided into three equal parts, the tail of the first guide rail is connected with the short edge b of the vertical cross section of the discharging mechanism, the short edge b is divided into two equal parts, the tail of the third guide rail and the tail of the fifth guide rail are connected with the long edge c of the vertical cross section of the discharging mechanism, the long edge c is divided into three equal parts, the tail of the fourth guide rail is connected with the opposite edge d of the short edge b, and the opposite edge d is divided into two equal parts.

The turnover guide rail device comprises 2 short rails, the short rails are a seventh guide rail and an eighth guide rail, the end part of the seventh guide rail is fixedly arranged on the short side b of the discharging mechanism and is close to the long side a, the end part of the eighth guide rail is fixedly arranged on the long side c of the discharging mechanism and is positioned below the third guide rail, and the tail parts of the seventh guide rail and the eighth guide rail extend towards the feeding mechanism.

A package turnover device is characterized by comprising a feeding conveyor belt, a receiving conveyor belt and a package turnover mechanism, wherein the transmission tail end of the feeding conveyor belt is connected with the transmission starting end of the receiving conveyor belt through the package turnover mechanism in the same transmission mode, the package turnover mechanism comprises a feeding mechanism, a discharging mechanism, a turnover guide rail device and a package turnover worktable, the end part of the package turnover worktable is connected with the transmission tail end of the feeding conveyor belt, the tail part of the package turnover worktable is connected with the transmission starting end of the receiving conveyor belt, the feeding mechanism is fixedly arranged at the end part of the package turnover worktable, the discharging mechanism is fixedly arranged at the tail part of the package turnover worktable, the feeding mechanism and the discharging mechanism are of opposite round frame structures, the feeding mechanism is connected with the discharging mechanism through the turnover guide rail device, the turnover guide rail device comprises at least 4 turnover guide rails and a turnover cavity, the cross section of the turnover cavity is larger than the maximum cross section of the box body, at least 4 turnover guide rails are uniformly connected to the feeding mechanism and the discharging mechanism, the end parts of the turnover guide rails are connected with the feeding mechanism, the tail parts of the turnover guide rails are connected with the discharging mechanism, the included angles formed by the perpendicular lines from the connecting points of the end parts of any turnover guide rail and the feeding mechanism to the discharging mechanism and the guide rails are equal, and the included angles are acute angles.

Furthermore, a pressurizing wheel device is arranged on the feeding conveyor belt close to the feeding mechanism, the pressurizing wheel device comprises a pressurizing wheel and a support, the pressurizing wheel is fixedly arranged right above the feeding conveyor belt and applies pressure to the box body on the feeding conveyor belt along the conveying direction of the feeding conveyor belt, the support is an L-shaped component, one end of the support is provided with a slide way and is fixed on the feeding conveyor belt, the other end of the support is connected with the pressurizing wheel, and the height of the pressurizing wheel can be adjusted through the slide way.

Furthermore, a first flow guide device is arranged on the feeding conveyor belt close to the feeding mechanism, the first flow guide device is arranged along the left side and the right side of the transmission direction of the feeding conveyor belt, a second flow guide device is arranged on a workbench at the transmission starting end of the receiving conveyor belt, the second flow guide device is perpendicular to the receiving conveyor belt, and a gap is formed between the second flow guide device and the receiving conveyor belt. Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses a mechanical structure has effectively solved the loaded down with trivial details complicacy of packing turning device structure, fault rate height, maintenance degree of difficulty are big, are difficult to carry out the difficult problem of low-cost transformation according to the box body size.

2. Be different from prior art, the utility model discloses a curved path of upset guide rail effectively realizes the automatic upset of arbitrary angle in the packing carton data send process, avoids artifical upset, uses manpower sparingly and packing time, effectively improves packing efficiency.

3. The utility model discloses add the guiding device, effectively guide the box body and move along correct direction of motion on the conveyer belt to the card angle problem when having avoided the box body to carry to discharge mechanism has solved the box body corner wearing and tearing problem in the transportation.

4. The utility model has the advantages of simple integral structure, high transmission efficiency and low cost, and can be widely used for automatic overturning of packing boxes.

Drawings

FIG. 1 is a schematic vertical cross-sectional view I of a feeding mechanism (from the end of a feeding conveyor belt to a package overturning worktable);

FIG. 2 is a schematic vertical cross-sectional view I of the feeding mechanism (from the end of the package overturning worktable to the direction of the receiving conveyor belt);

FIG. 3 is a top view of the packaging canting mechanism (four canting rails);

FIG. 4 is a front view of the package inverting apparatus (four inverting rails);

FIG. 5 is a package inverting assembly global view (four inverting rails);

FIG. 6 is a general view of a package inverting apparatus (four inverting guides + booster wheel apparatus);

FIG. 7 is a front view of a package inverting apparatus (four inverting guide rails + booster wheel assembly);

FIG. 8 is a general view of a package inverting apparatus (four inverting rails + booster wheel apparatus + deflector);

fig. 9 is a front view of the package turning device (four turning rails + booster wheel device + deflector device);

FIG. 10 is a second vertical cross-sectional view of the feeding mechanism (from the end of the feeding conveyor toward the package turning table);

FIG. 11 is a second schematic vertical cross-sectional view of the feeding mechanism (from the end of the package turning table toward the receiving conveyor);

FIG. 12 is a top view of the package inverting mechanism (six inverting rails);

fig. 13 is a global view of a package turning device (six turning guide rails + pressure increasing wheel devices + flow guide devices);

fig. 14 is a front view of the package turning device (six turning rails + pressure increasing wheel device + deflector);

FIG. 15 is the top view of the package turnover device (eight turnover guides)

FIG. 16 is the overall view of the package turnover device (eight turnover guides + pressure wheel device + flow guiding device)

FIG. 17 is a front view of the package turning device (eight turning rails + pressurizing wheel device + guiding device)

The figure is as follows:

1 feeding conveyor belt 2 receiving conveyor belt 3 packing turnover mechanism 31 feeding mechanism 32 discharging mechanism 33 turnover guide rail device 34 packing turnover table 331 first guide rail 332 second guide rail 333 third guide rail 335 fifth guide rail 336 sixth guide rail 338 eighth guide rail 4 pressure increasing wheel device 41 pressure increasing wheel 42 support 5 first flow guide device 6 second flow guide device a long side B of the vertical cross section of the feeding mechanism B short side C of the vertical cross section of the feeding mechanism D opposite side a short side B of the vertical cross section of the feeding mechanism a short side B of the vertical cross section of the discharging mechanism B opposite side D of the vertical cross section of the discharging mechanism B.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the described embodiments cannot be used to limit the protection scope of the present invention.

In embodiment 1, referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the present embodiment provides a package turnover device, which includes a feeding conveyor belt 1, a receiving conveyor belt 2, and a package turnover mechanism 3.

Wherein, the transmission tail end of the feeding conveyor belt 1 is connected with the transmission starting end of the receiving conveyor belt 2 through a packaging turnover mechanism 3, and the transmission modes are the same.

Wherein, the package turnover mechanism 3 comprises a feeding mechanism 31, a discharging mechanism 32, a turnover guide rail device 33 and a package turnover worktable 34. The feeding mechanism 31 is fixedly arranged at the end part of the packaging turnover worktable 34, the discharging mechanism 32 is fixedly arranged at the tail part of the packaging turnover worktable 34, and the feeding mechanism 31 is connected with the discharging mechanism 32 through a turnover guide rail device 33. The feeding mechanism 31 and the discharging mechanism 32 are fixed at an angle of 90 degrees with each other.

The turnover guide rail device 33 comprises 4 turnover guide rails and a turnover cavity defined by the turnover guide rails, the end parts of the turnover guide rails are connected with the feeding mechanism 31, and the tail parts of the turnover guide rails are connected with the discharging mechanism 32.

The connection mode is as follows: the end part of the second guide rail is connected with the long edge A of the vertical cross section of the feeding mechanism 31, the long edge A is divided into two equal parts, the end part of the first guide rail 331 is connected with the short edge B of the vertical cross section of the feeding mechanism 31, the short edge B is divided into two equal parts, the end part of the third guide rail 333 is connected with the opposite edge C of the long edge A, the opposite edge C is divided into two equal parts, the end part of the fourth guide rail 334 is connected with the opposite edge D of the short edge B, and the opposite edge D is divided into two equal parts;

the tail of the second guide rail 332 is connected with the long edge a of the vertical cross section of the discharging mechanism 32, the long edge a is divided into two equal parts, the tail of the first guide rail 331 is connected with the short edge b of the vertical cross section of the discharging mechanism 32, the short edge b is divided into two equal parts, the tail of the third guide rail 333 is connected with the long edge c of the vertical cross section of the discharging mechanism 32, the long edge c is divided into two equal parts, the tail of the fourth guide rail 334 is connected with the opposite edge d of the short edge b, and the opposite edge d is divided into two equal parts.

Wherein the turnover guide rail device 33 can be connected with the feeding mechanism 31 and the discharging mechanism 32 by different means, including but not limited to welding, threads, snap-fitting, etc.

The operation steps and the working principle are as follows:

the box body is conveyed to a feeding mechanism 31 through a feeding conveyor belt 1, enters an overturning guide rail device 33 through inertia, is overturned for 90 degrees along the path of 4 guide rails and the mechanical structure of an overturning cavity enclosed by the guide rails, and then enters a receiving conveyor belt 2 through a discharging mechanism 32 to complete the whole overturning and sliding process.

Embodiment 2, the package turnover device provided in this embodiment is different from embodiment 1 in that (as shown in fig. 1, fig. 2, fig. 3, fig. 6, and fig. 7): a pressurizing wheel device 4 is arranged on the feeding conveyor belt 1 close to the feeding mechanism 31.

The pressure increasing wheel device 4 comprises a pressure increasing wheel 41 and a support 42, the pressure increasing wheel 41 is fixedly arranged right above the feeding conveyor belt 1, the support 42 is an L-shaped component, one end of the support is provided with a slide way and is fixed on a workbench of the feeding conveyor belt 1, the other end of the support is connected with the pressure increasing wheel 41, and the support 42 can adjust the height of the pressure increasing wheel 41 through the slide way.

The operation steps and the working principle are as follows:

the box body is conveyed to the position under the pressurizing wheel device 4 through the feeding conveyor belt 1, through friction with the box body, the pressurizing wheel 41 applies pressure along the transmission direction of the feeding conveyor belt 1 to the box body on the feeding conveyor belt 1, so that the box body enters the overturning guide rail device 33 through the feeding mechanism 31, the overturning is realized along the paths of the 4 guide rails and the mechanical structure of an overturning cavity enclosed by the paths, and then the box body enters the receiving conveyor belt 2 through the discharging mechanism 32, and the whole overturning sliding process is completed.

Embodiment 3, the package turnover device provided in this embodiment is different from embodiment 2 in that (as shown in fig. 1, fig. 2, fig. 3, fig. 8, and fig. 9): the first flow guiding device 5 and the second flow guiding device 6 are arranged on the feeding conveyor belt 1 close to the feeding mechanism 31 so as to prevent the box bodies from deviating from the track in the conveying process along the conveying direction of the feeding conveyor belt 1 and prevent the packaging corners from being worn when the small boxes enter the receiving conveyor belt 2 through the discharging mechanism 32.

Wherein, the first guiding device 5 is arranged along the left side and the right side of the transmission direction of the feeding conveyor belt 1.

Wherein, the second guiding device 6 is arranged at the left side and the right side of the workbench at the transmission starting end of the material receiving conveyor belt 2.

Embodiment 4, the package turnover device provided in this embodiment is different from embodiment 3 in that (see fig. 10, 11, 12, 13, and 14): increase 4 guide rails to 6 guide rails to form more confined upset chamber, prevent that the box body from dropping through the in-process of packing tilting mechanism 3.

The connection mode is as follows: the end of the second guide rail 332 and the end of the sixth guide rail 336 are connected with the long edge A of the vertical cross section of the feeding mechanism 31 and divide the long edge A into three equal parts, the end of the first guide rail 331 is connected with the short edge B of the vertical cross section of the feeding mechanism 31 and divides the short edge B into two equal parts, the end of the third guide rail 333 and the end of the fifth guide rail 335 are connected with the opposite edge C of the long edge A and divide the opposite edge C into three equal parts, and the end of the fourth guide rail 334 is connected with the opposite edge D of the short edge B and divides the opposite edge D into two equal parts; the tail of the second guide rail 332 and the tail of the sixth guide rail 336 are connected with the long edge a of the vertical cross section of the discharging mechanism 32, the long edge a is divided into three equal parts, the tail of the first guide rail 331 is connected with the short edge b of the vertical cross section of the discharging mechanism 32, the short edge b is divided into two equal parts, the tail of the third guide rail 333 and the tail of the fifth guide rail 335 are connected with the long edge c of the vertical cross section of the discharging mechanism 32, the long edge c is divided into three equal parts, the tail of the fourth guide rail 334 is connected with the opposite edge d of the short edge b, and the opposite edge d is divided into two equal parts.

Embodiment 5, the package turnover device provided by this embodiment is different from embodiment 4 in that (see fig. 15, 16, and 17): 6 rails were increased to 8 rails.

One end of the seventh guide rail 337 is fixedly arranged on the short side b close to the long side a of the discharging mechanism 32, one end of the eighth guide rail 338 is fixedly arranged on the long side c of the discharging mechanism 32 and is located below the third guide rail 333, and the tails of the seventh guide rail 337 and the eighth guide rail 338 extend towards the feeding mechanism 31 to prevent the box body from falling off the corner in the process of entering the discharging mechanism 32.

The utility model provides a packing tilting mechanism, simple structure, transmission efficiency is high, and is with low costs, applicable in the automatic upset of various shape packing carton, the packing does not receive the restriction of packing carton shape, rotation angle can be arbitrary angle. And simultaneously, the utility model discloses can extensively be applicable to fields such as medicine, food, machinery, application scope is wide, and maneuverability is strong.

Claims

1. A package turning device is characterized by comprising a feeding conveyor belt (1), a receiving conveyor belt (2) and a package turning mechanism (3), wherein the transmission tail end of the feeding conveyor belt (1) is connected with the transmission starting end of the receiving conveyor belt (2) through the package turning mechanism (3) in the same transmission mode, the package turning mechanism (3) comprises a feeding mechanism (31), a discharging mechanism (32), a turning guide rail device (33) and a package turning workbench (34), the end part of the package turning workbench (34) is connected with the transmission tail end of the feeding conveyor belt (1), the tail part of the package turning workbench (34) is connected with the transmission starting end of the receiving conveyor belt (2), the feeding mechanism (31) is fixedly arranged at the end part of the package turning workbench (34), the discharging mechanism (32) is fixedly arranged at the tail part of the package turning workbench (34), the feeding mechanism (31) and the discharging mechanism (32) are of polygonal frame structures which are arranged oppositely, the feeding mechanism (31) is connected with the discharging mechanism (32) through a turnover guide rail device (33), the turnover guide rail device (33) comprises at least 4 turnover guide rails and a turnover cavity defined by the turnover guide rails, the cross section of the turnover cavity is larger than the maximum cross section of the box body, each side of the feeding mechanism (31) and each side of the discharging mechanism (32) are connected with at least 1 turnover guide rail, the end part of each turnover guide rail is connected with the feeding mechanism (31), the tail part of each turnover guide rail is connected with the discharging mechanism (32), and the included angles formed by the perpendicular lines from the connecting points of the end part of any turnover guide rail and the feeding mechanism (31) to the discharging mechanism (32) and the guide rails are equal and acute.

2. A package turning device according to claim 1, characterized in that the feeding mechanism (31) and the discharge mechanism (32) are of rectangular frame construction.

3. A package turning device according to claim 2, characterised in that the feeding mechanism (31) and the discharge mechanism (32) are fixed at 90 ° to each other.

4. A package turning device according to claim 3, characterized in that the turning rail of the turning rail device (33) is a curved turning rail.

5. The package inverting apparatus according to claim 4, characterized in that the inverting guide rail apparatus (33) has 6 inverting guide rails which are a first guide rail (331), a second guide rail (332), a third guide rail (333), a fourth guide rail (334), a fifth guide rail (335), and a sixth guide rail (336) in this order.

6. The package inverting apparatus of claim 5, wherein:

the end part of the second guide rail (332) and the end part of the sixth guide rail (336) are connected with the long edge A of the vertical cross section of the feeding mechanism (31) and divide the long edge A into three equal parts, the end part of the first guide rail (331) is connected with the short edge B of the vertical cross section of the feeding mechanism (31) and divides the short edge B into two equal parts, the end part of the third guide rail (333) and the end part of the fifth guide rail (335) are connected with the opposite edge C of the long edge A and divide the opposite edge C into three equal parts, and the end part of the fourth guide rail (334) is connected with the opposite edge D of the short edge B and divides the opposite edge D into two equal parts;

the tail of the second guide rail (332) and the tail of the sixth guide rail (336) are connected with a long edge a of a vertical cross section of the discharging mechanism (32) and divide the long edge a into three equal parts, the tail of the first guide rail (331) is connected with a short edge b of the vertical cross section of the discharging mechanism (32) and divides the short edge b into two equal parts, the tail of the third guide rail (333) and the tail of the fifth guide rail (335) are connected with a long edge c of the vertical cross section of the discharging mechanism (32) and divide the long edge c into three equal parts, and the tail of the fourth guide rail (334) is connected with an opposite edge d of the short edge b and divides the opposite edge d into two equal parts.

7. The package inverting apparatus of claim 6, wherein the inverting guide rail apparatus (33) comprises 2 short rails, the short rails are a seventh guide rail (337) and an eighth guide rail (338), the end of the seventh guide rail (337) is fixed on the short side b of the discharging mechanism (32) and close to the long side a, the end of the eighth guide rail (338) is fixed on the long side c of the discharging mechanism (32) and located below the third guide rail (333), and the tail of the seventh guide rail (337) and the tail of the eighth guide rail (338) both extend toward the feeding mechanism (31).

8. A package turning device is characterized by comprising a feeding conveyor belt (1), a receiving conveyor belt (2) and a package turning mechanism (3), wherein the transmission tail end of the feeding conveyor belt (1) is connected with the transmission starting end of the receiving conveyor belt (2) through the package turning mechanism (3) in the same transmission mode, the package turning mechanism (3) comprises a feeding mechanism (31), a discharging mechanism (32), a turning guide rail device (33) and a package turning workbench (34), the end part of the package turning workbench (34) is connected with the transmission tail end of the feeding conveyor belt (1), the tail part of the package turning workbench (34) is connected with the transmission starting end of the receiving conveyor belt (2), the feeding mechanism (31) is fixedly arranged at the end part of the package turning workbench (34), the discharging mechanism (32) is fixedly arranged at the tail part of the package turning workbench (34), the feeding mechanism (31) and the discharging mechanism (32) are of circular frame structures which are arranged oppositely, the feeding mechanism (31) is connected with the discharging mechanism (32) through a turnover guide rail device (33), the turnover guide rail device (33) comprises at least 4 turnover guide rails and a turnover cavity defined by the turnover guide rails, the cross section of the turnover cavity is larger than the maximum cross section of the box body, the feeding mechanism (31) and the discharging mechanism (32) are uniformly connected with the at least 4 turnover guide rails, the end parts of the turnover guide rails are connected with the feeding mechanism (31), the tail parts of the turnover guide rails are connected with the discharging mechanism (32), and the included angles formed by the perpendicular lines from the connection points of the end parts of any turnover guide rail and the feeding mechanism (31) to the discharging mechanism (32) and the guide rails are equal and acute.

9. The package turning device according to any one of claims 1 to 8, characterized in that a pressure wheel device (4) is arranged on the feeding conveyor belt (1) near the feeding mechanism (31), the pressure wheel device (4) comprises a pressure wheel (41) and a bracket (42), the pressure wheel (41) is fixedly arranged right above the feeding conveyor belt (1) to apply pressure to the box bodies on the feeding conveyor belt (1) along the conveying direction of the feeding conveyor belt (1), the bracket (42) is an L-shaped member, one end of the bracket is provided with a slideway and fixed on the feeding conveyor belt (1), the other end of the bracket is connected with the pressure wheel (41), and the height of the pressure wheel (41) can be adjusted by the bracket (42) through the slideway.

10. The package turning device according to any one of claims 1 to 8, wherein a first flow guiding device (5) is disposed on the feeding conveyor belt (1) near the feeding mechanism (31), the first flow guiding device (5) is disposed along the left and right sides of the conveying direction of the feeding conveyor belt (1), a second flow guiding device (6) is disposed on the workbench at the conveying start end of the receiving conveyor belt (2), the second flow guiding device (6) is perpendicular to the receiving conveyor belt (2), and a gap is disposed between the second flow guiding device and the receiving conveyor belt (2).