Supporting beam frame for box type conveying line and box type conveying line

Abstract

The utility model relates to the technical field of automatic warehouse logistics, in particular to a supporting beam frame for a box type conveying line and the box type conveying line, and aims to solve the problem that passing is affected by a rack of an existing box type conveying line. The supporting beam frame comprises a cross beam assembly and a stand column assembly. The cross beam assembly is horizontally arranged below the conveying line and used for supporting the conveying line. The two stand column assemblies are vertically arranged and connected to the two ends of the cross beam assembly in the length direction of the stand column assemblies so that a passage can be defined by the stand column assemblies and the cross beam assembly. The stand column assembly comprises a stand column body and an adjusting frame. The stand column body is vertically arranged. The adjusting frame is connected with the cross beam assembly and slidably connected to the stand column body in the vertical direction. The cross beam assembly and the two stand column assemblies form a passing channel so as to facilitate passing. The height of the stand column assembly can be adjusted through the adjusting frame so as to adapt to the situation that the ground is uneven, the requirements for the heights of different cross beam assemblies can be met within a certain size range, the installation efficiency of the conveying line is improved, and the types of conveying line supporting racks are reduced.

Description

Technical Field

[0001] This utility model relates to the field of automated warehousing and logistics technology, and in particular to a support beam frame for a box-type conveyor line and a box-type conveyor line. Background Technology

[0002] In automated warehousing and logistics systems, box conveyor lines are typically supported by racks. In some special scenarios, due to factors such as site location or manual transport, there is a need for passage. Existing rack support methods, due to their layout, make it difficult to create passageways of sufficient size, affecting the convenience of passage. Utility Model Content

[0003] The purpose of this utility model is to provide a support beam frame for a box-type conveyor line and a box-type conveyor line, so as to solve the problem that the frame of the existing box-type conveyor line affects passage.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a support beam frame for a box-type conveyor line, including a crossbeam assembly and a column assembly;

[0006] The crossbeam assembly is horizontally positioned below the conveyor line to support it.

[0007] The two column assemblies are vertically arranged and connected to both ends of the crossbeam assembly along its own length, thereby forming a passageway with the crossbeam assembly;

[0008] The column assembly includes a column body and an adjustment frame. The column body is vertically arranged. The adjustment frame is connected to the crossbeam assembly and is slidably connected to the column body in the vertical direction.

[0009] Furthermore, the adjustment frame is provided with an adjustment elongated hole extending in the vertical direction, and bolts are inserted into the adjustment elongated hole and the column body.

[0010] Furthermore, the adjustment frame includes a horizontal connecting plate and an L-shaped vertical plate;

[0011] The horizontal connecting plate is connected to the crossbeam assembly and the L-shaped upright plate on its upper and lower sides, respectively. The two side plates that make up the L-shaped upright plate are attached to the column body and are provided with the adjustment elongated holes.

[0012] Furthermore, the column assembly also includes an adjusting rod, which is vertically arranged and threadedly connected to the column body;

[0013] The upper end of the adjusting rod abuts against the horizontal connecting plate.

[0014] Furthermore, the column assembly also includes a limiting nut, which is fitted onto the adjusting rod and threadedly connected to the adjusting rod;

[0015] The lower surface of the limiting nut abuts against the column body.

[0016] Furthermore, the column body includes a riser, a base plate, a first top plate, and a bending frame;

[0017] The riser is installed vertically, with its two ends connected to the bottom plate and the first top plate, respectively.

[0018] The first top plate has a threaded hole for threaded connection with the adjusting rod;

[0019] The riser has a through hole perpendicular to its own length for connecting to the L-shaped riser plate by bolts.

[0020] The bending frame includes a bending top plate, bending side plates, and bending stiffeners;

[0021] The bent top plate and the bent side plate are connected to form an L-shaped structure, and the bent stiffener is perpendicular to the bent top plate and the bent side plate and is connected to the bent top plate and the bent side plate;

[0022] The bent top plate is horizontally arranged and connected to the first top plate, and the bent side plate is vertically arranged and connected to the riser.

[0023] Furthermore, the column assembly includes two column bodies and an adjustment frame connected to the two column bodies respectively, with the two column bodies arranged along a length direction perpendicular to the crossbeam assembly;

[0024] It also includes multiple connecting beams arranged along the height direction of the column body;

[0025] The connecting beam is horizontally positioned, with its two ends connected to the two column bodies respectively.

[0026] Furthermore, the beam assembly includes a rectangular frame and a protective bend plate;

[0027] The rectangular frame includes longitudinal beams and transverse beams;

[0028] The two longitudinal beams are arranged in parallel, and the plurality of transverse beams are arranged along the length of the longitudinal beams, with each end of the transverse beam connected to one of the two longitudinal beams.

[0029] The protective bend plate is disposed between two adjacent transverse beams and connected to the transverse beams;

[0030] The protective bend plate has four bends, which form a rectangle.

[0031] In another aspect, this utility model proposes a box-type conveyor line, including the aforementioned support beam frame for the box-type conveyor line, and also includes a turning device, which includes a first conveyor roller group, a second conveyor roller group, and a turning mechanism.

[0032] The first conveyor roller group and the second conveyor roller group are arranged in parallel; the flipping mechanism is installed between the first conveyor roller group and the second conveyor roller group.

[0033] Furthermore, the flipping mechanism includes a rotating shaft and a flipping rod assembly, wherein the rotating shaft is disposed between the first conveying roller assembly and the second conveying roller assembly and is parallel to the first conveying roller assembly and the second conveying roller assembly;

[0034] Multiple flipping rod assemblies are evenly distributed around the axis of the rotating shaft, and the rotating shaft rotates around its own axis to drive the flipping rod assemblies to rotate;

[0035] The flipping rod assembly includes multiple flipping rods arranged along the axis of the rotating shaft;

[0036] The flipping rod is arranged alternately with the rollers of the first conveying roller group and also alternately with the rollers of the second conveying roller group.

[0037] Based on the above technical solutions, the technical effects achieved by this utility model are as follows:

[0038] The support beam frame for a box-type conveyor line provided by this utility model includes a crossbeam assembly and a column assembly; the crossbeam assembly is horizontally arranged below the conveyor line to support the conveyor line; two column assemblies are vertically arranged and connected to both ends of the crossbeam assembly along its own length direction, thereby forming a passageway with the crossbeam assembly; the column assembly includes a column body and an adjusting frame, the column body is vertically arranged; the adjusting frame is connected to the crossbeam assembly and is slidably connected to the column body in the vertical direction.

[0039] The support beam frame for box-type conveyor lines provided by this utility model forms a passageway through a crossbeam assembly and two column assemblies to facilitate passage; the height of the column assembly is adjustable by an adjustable frame to adapt to uneven ground conditions, and can meet the height requirements of different crossbeam assemblies within a certain size range, thereby improving the efficiency of conveyor line installation and reducing the types of conveyor line support frames. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a structural schematic diagram of a support beam frame for a box-type conveyor line provided in an embodiment of the present invention;

[0042] Figure 2 This is a structural schematic diagram of the beam assembly;

[0043] Figure 3 A structural schematic diagram of the protective bend plate;

[0044] Figure 4 This is a structural schematic diagram of the column assembly;

[0045] Figure 5 This is a structural schematic diagram of the column body;

[0046] Figure 6 This is a schematic diagram of the bending frame structure;

[0047] Figure 7 This is a structural schematic diagram of the connecting beam;

[0048] Figure 8 This is a schematic diagram of the adjustment frame.

[0049] Figure 9 This is a schematic diagram of the flipping device.

[0050] Figure 10 This is a schematic diagram of the flipping mechanism.

[0051] Icons: 100, Horizontal beam assembly; 200, Column assembly; 110, Rectangular frame; 120, Protective bend plate; 210, Column body; 220, Adjusting frame; 230, Adjusting top rod; 240, Limiting nut; 250, Connecting beam; 211, Vertical pipe; 212, Base plate; 213, First top plate; 214, Bending frame; 215, Supporting stiffener; 221, Horizontal connecting plate; 222, L-shaped vertical plate; 251, Horizontal pipe; 252, Vertical connecting plate; 111, Longitudinal beam; 112, Transverse beam; 201, Adjusting elongated hole; 202, Connecting groove; 301, Bending top plate; 302, Bending side plate; 303, Bending stiffener; 310, First conveyor roller group; 320, Second conveyor roller group; 330, Tilting mechanism; 331, Rotating shaft; 332, Tilting rod group. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0053] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0054] The existing rack support method makes it difficult to form a passageway of sufficient size due to its layout, which affects the convenience of passage.

[0055] In view of this, the present invention provides a support beam frame for a box-type conveyor line, including a crossbeam assembly 100 and a column assembly 200; the crossbeam assembly 100 is horizontally arranged below the conveyor line to support the conveyor line; two column assemblies 200 are vertically arranged and connected to both ends of the crossbeam assembly 100 along its own length direction, thereby forming a passageway with the crossbeam assembly 100; the column assembly 200 includes a column body 210 and an adjusting frame 220, the column body 210 is vertically arranged; the adjusting frame 220 is connected to the crossbeam assembly 100 and is slidably connected to the column body 210 in the vertical direction.

[0056] The following combination Figures 1-8 The structure and shape of the support beam frame for the box-type conveyor line provided in this embodiment will be described in detail:

[0057] In an optional embodiment, the crossbeam assembly 100 is horizontally positioned below the box-type conveyor line to support it, and includes a rectangular frame 110 and a protective bend plate 120, as shown below. Figure 2 As shown, the rectangular frame 110 includes two parallel longitudinal beams 111 and multiple transverse beams 112 arranged along the length of the longitudinal beams 111. The longitudinal beams 111 support the box-type conveyor line, and the two ends of the transverse beams 112 are welded to the two longitudinal beams 111 respectively. The longitudinal beams 111 are made of rectangular tubing with a specification of 80×40×3 mm, and the height of the longitudinal beams 111 is 80 mm to provide sufficient support strength and prevent bending deformation. The transverse beams 112 can be made of rectangular tubing with a specification of 40×40×3 mm to ensure the overall structural strength.

[0058] In this embodiment, the protective bend plate 120 is disposed between two adjacent transverse beams 112. The protective bend plate 120 is a sheet metal part, formed by bending. Specifically, as shown... Figure 3As shown, the protective bend plate 120 has four rectangular bends to enhance its strength. Two of these bends have U-shaped grooves for connecting to the two transverse beams 112. Specifically, the U-shaped grooves face downwards, and bolts are inserted into the transverse beams 112 and the U-shaped grooves. The transverse beams 112 and the bends are then locked together using nuts and bolts. During assembly, the bolts are first inserted into the through holes on the transverse beams 112 and the nuts are tightened. Then, the protective bend plate 120 is inserted from above so that the U-shaped grooves engage with the bolts. Finally, the nuts are tightened to secure the bends. The protective bend plate 120 protects the top of the conveyor line, preventing objects from falling and affecting traffic safety.

[0059] In this embodiment, the column assembly 200 includes a column body 210, an adjusting frame 220, an adjusting top rod 230, a limiting nut 240, and a connecting beam 250, as shown below. Figure 4 As shown. Specifically, it includes two vertically arranged column bodies 210 and two horizontally arranged connecting beams 250. The two column bodies 210 are arranged along the length direction of the transverse beam 112, and the two connecting beams 250 are arranged along the height direction of the column bodies 210. The two ends of the connecting beams 250 are connected to the two column bodies 210 respectively. Each column body 210 is equipped with an adjusting bracket 220, an adjusting top rod 230, and a limiting nut 240.

[0060] In this embodiment, the adjusting rod 230 can be a hexagonal bolt.

[0061] In this embodiment, the column body 210 includes a riser 211, a base plate 212, a first top plate 213, a bending frame 214, and a supporting stiffener 215, as shown below. Figure 5 As shown, the riser 211 is vertically installed, with its two ends connected to the horizontally installed base plate 212 and the first top plate 213, respectively. The first top plate 213 has a threaded hole extending vertically for threaded connection with the adjusting rod 230. A limiting nut 240 is fitted onto the adjusting rod 230 and threadedly connected to it; the lower surface of the limiting nut 240 abuts against the first top plate 213 to prevent the adjusting rod 230 from loosening. The supporting rib 215 is vertically installed and connected to the base plate 212 and the riser 211.

[0062] In this embodiment, the first top plate 213 is a cantilever structure. A bending frame 214 is provided to ensure strength and prevent the first top plate 213 from bending and deforming, thereby ensuring that the adjusting rod 230 can provide sufficient support strength. Specifically, the bending frame 214 is a sheet metal part, bent and formed, including a bending top plate 301, bending side plates 302, and bending stiffeners 303, as shown below. Figure 6As shown. The bent top plate 301 and the bent side plate 302 are connected to form an L-shaped structure. The bent stiffening plate 303 is perpendicular to the bent top plate 301 and the bent side plate 302 and is connected to the bent top plate 301 and the bent side plate 302. The bent top plate 301 is horizontally set and connected to the first top plate 213, and the bent side plate 302 is vertically set and connected to the riser 211. The bent top plate 301 has a through hole for adjusting the top rod 230 to pass through, and the bent side plate 302 has an elongated hole extending in the vertical direction for bolt connection with the riser 211.

[0063] In this embodiment, the adjusting frame 220 includes a horizontal connecting plate 221 and an L-shaped vertical plate 222, as shown below. Figure 8 As shown, the horizontal connecting plate 221 is connected to the longitudinal beam 111 and the L-shaped vertical plate 222 on its upper and lower sides, respectively. Specifically, the two side plates forming the L-shaped vertical plate 222 are attached to the riser 211 and each has an adjustment elongated hole 201 extending vertically. The adjustment elongated hole 201 is used for bolting to the riser 211. The riser 211 has a through hole perpendicular to its own length direction to cooperate with the adjustment elongated hole 201. The horizontal connecting plate 221 has an elongated hole extending along the length direction of the transverse beam 112 for bolting to the longitudinal beam 111.

[0064] In this embodiment, each of the two side plates of the L-shaped upright plate 222 has an adjusting elongated hole 201, and the two adjusting elongated holes 201 have different lengths. Correspondingly, the riser 211 has two sets of through holes perpendicular to its own length direction, and the two sets of through holes are perpendicular to each other and do not intersect. Different numbers of through holes are selected according to the different lengths of the adjusting holes, and the bolts are staggered to avoid interference.

[0065] In this embodiment, the L-shaped upright plate 222, the upright pipe 211 and the bending frame 214 are connected by the same set of bolts, specifically, a single bolt and nut are used for connection.

[0066] In this embodiment, the upper end of the adjusting top rod 230 abuts against the horizontal connecting plate 221, thereby supporting the horizontal connecting plate 221 together with the L-shaped vertical plate 222 to ensure the height stability of the horizontal connecting plate 221 and avoid insufficient support of the horizontal connecting plate 221.

[0067] In this embodiment, the connecting beam 250 includes a horizontal pipe 251 and a vertical connecting plate 252, such as... Figure 7As shown, the horizontal tube 251 is horizontally positioned, with both ends welded to two vertical connecting plates 252. Specifically, each of the upper and lower ends of the vertical connecting plate 252 has a U-shaped connecting groove 202 for bolting to the riser 211. Bolts are inserted into both the riser 211 and the connecting groove 202 to fix the connecting beam 250 and prevent it from moving up and down. Nuts are threaded onto the bolts, pressing the vertical connecting plate 252 tightly against the riser 211, thus ensuring that the two column bodies 210 are arranged in parallel.

[0068] In this embodiment, both the riser 211 and the horizontal pipe 251 are made of rectangular tubes with a specification of 60×40×3.

[0069] In this embodiment, the column body 210 is fixed to the ground using anchor bolts. To adjust the height of the crossbeam assembly 100, first loosen the bolts connecting the column body 210 and the adjusting bracket 220, then loosen the limiting nut 240 and rotate the adjusting rod 230 to adjust the height, simultaneously adjusting the height of the adjusting bracket 220. After the height adjustment is complete, tighten the limiting nut 240 and the corresponding connecting bolts to fix the position.

[0070] The support beam frame for the box-type conveyor line provided in this embodiment allows the height of the crossbeam assembly 100 to be adjusted through the column assembly 200, avoiding interference from uneven ground on the installation of the conveyor line, reducing installation difficulty, improving efficiency, and reducing the specifications of the support beam frame, reducing the types of parts, and reducing processing and assembly costs by adjusting the height.

[0071] Specifically, the height of the column assembly 200 can be flexibly adjusted by the cooperation of the adjustment elongated hole 201 on the adjustment frame 220, the connecting groove 202 on the connecting beam 250, and the adjustment top rod 230. Among them, the connecting groove 202 on the vertical connecting plate 252 can ensure that the two column bodies 210 are misaligned to a certain height, thereby adapting to uneven ground conditions.

[0072] The support beam frame for the box-type conveyor line provided in this embodiment supports the conveyor line through large-span crossbeam assemblies 100, thereby increasing the spacing between the column assemblies 200 to ensure sufficient passage. The use of protective bend plates 120 ensures safe passage for personnel and avoids damage caused by falling objects.

[0073] Based on the support beam frame for the box-type conveyor line provided in this embodiment, a box-type conveyor line is proposed, including the aforementioned support beam frame for the box-type conveyor line, and further including a flipping device. The flipping device includes a first conveyor roller group 310, a second conveyor roller group 320, and a flipping mechanism 330, as follows: Figure 9 , Figure 10 As shown. The support beam is used to support the first conveyor roller group 310 and the second conveyor roller group 320.

[0074] Specifically, the first conveying roller group 310 and the second conveying roller group 320 are arranged in parallel; both the first conveying roller group 310 and the second conveying roller group 320 include multiple rollers arranged along their own length direction, and the rollers rotate around their own axis to convey goods; the flipping mechanism 330 is installed between the first conveying roller group 310 and the second conveying roller group 320, and includes a rotating shaft 331 and a flipping rod group 332. The rotating shaft 331 is arranged between the first conveying roller group 310 and the second conveying roller group 320 and is parallel to the first conveying roller group 310 and the second conveying roller group 320.

[0075] In this embodiment, multiple flipping rod assemblies 332 are evenly distributed around the axis of the rotating shaft 331, which rotates around its own axis to drive the flipping rod assemblies 332 to rotate. Specifically, a total of four flipping rod assemblies 332 are provided, with adjacent rod assemblies spaced 90° apart.

[0076] The tilting rod assembly 332 includes a plurality of tilting rods arranged along the axis of the rotating shaft 331, with the tilting rods perpendicular to the rotating shaft 331. The tilting rods are arranged alternately with the rollers of the first conveying roller assembly 310 and with the rollers of the second conveying roller assembly 320.

[0077] In this embodiment, the flipping mechanism 330 also includes a motor. The motor drives the rotating shaft 331 to rotate around its own axis through belt drive, chain drive or other means, so as to drive the flipping rod group 332 to rotate, thereby causing the flipping rod to pass between adjacent rollers, so as to lift the goods from the first conveying roller group 310, flip them 180° and place them on the second conveying roller group 320.

[0078] In this embodiment, a protective net can be installed on the column assembly 200 to protect the overturning device, prevent goods from falling during overturning, and prevent personnel from entering.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A support beam frame for a box conveyor line, characterized in that, The crossbeam assembly (100) and the column assembly (200) are provided. The crossbeam assembly (100) is horizontally arranged under the conveying line to support the conveying line. The two column assemblies (200) are vertically arranged and connected to the two ends of the crossbeam assembly (100) along the length direction of the crossbeam assembly (100), so as to form a passing channel with the crossbeam assembly (100). The column assembly (200) comprises a column body (210) and an adjusting frame (220), the column body (210) is vertically arranged, and the adjusting frame (220) is connected with the crossbeam assembly (100) and slidably connected with the column body (210) in the vertical direction.

2. The support beam frame for a box conveyor line according to claim 1, characterized in that, The adjusting frame (220) is provided with an adjusting long hole (201) extending in the vertical direction, and a bolt is inserted into the adjusting long hole (201) and the column body (210).

3. The support beam frame for a box conveyor line according to claim 2, characterized in that, The adjusting frame (220) comprises a horizontal connecting plate (221) and an L-shaped vertical plate (222). The horizontal connecting plate (221) is connected with the crossbeam assembly (100) and the L-shaped vertical plate (222) on the upper and lower sides, respectively, two side plates of the L-shaped vertical plate (222) are attached to the column body (210) and are provided with the adjusting long hole (201).

4. The support beam frame for a box conveyor line according to claim 3, characterized in that, The column assembly (200) further comprises an adjusting top rod (230), the adjusting top rod (230) is vertically arranged and threadedly connected with the column body (210). The upper end of the adjusting top rod (230) abuts against the horizontal connecting plate (221).

5. The support beam frame for a box conveyor line according to claim 4, characterized in that, The column assembly (200) further comprises a limiting nut (240), the limiting nut (240) is sleeved on the adjusting top rod (230) and threadedly connected with the adjusting top rod (230). The lower surface of the limiting nut (240) abuts against the column body (210).

6. The support beam frame for a box conveyor line according to claim 5, characterized in that, The column body (210) comprises a stand pipe (211), a bottom plate (212), a first top plate (213) and a bending frame (214). The stand pipe (211) is vertically arranged and connected with the bottom plate (212) and the first top plate (213) at two ends, respectively. The first top plate (213) is provided with a threaded hole for threadedly connecting with the adjusting top rod (230). The stand pipe (211) is provided with a through hole perpendicular to the length direction of the stand pipe (211) for threadedly connecting with the L-shaped vertical plate (222). The bending frame (214) comprises a bending top plate (301), a bending side plate (302) and a bending rib plate (303). The bending top plate (301) and the bending side plate (302) are connected in an L-shaped structure, and the bending rib plate (303) is perpendicular to and connected with the bending top plate (301) and the bending side plate (302). The bending top plate (301) is horizontally arranged and connected with the first top plate (213), and the bending side plate (302) is vertically arranged and connected with the stand pipe (211).

7. The support beam frame for a box conveyor line according to claim 6, characterized in that, The column assembly (200) comprises two column bodies (210) and the adjusting frame (220) connected with the two column bodies (210) respectively, and the two column bodies (210) are arranged along the vertical direction of the length of the beam assembly (100). Further comprising a plurality of connecting beams (250) arranged along the height direction of the column body (210). The connecting beam (250) is horizontally arranged, and two ends thereof are connected with the two column bodies (210) respectively.

8. The support beam frame for a box conveyor line of claim 1, wherein, The beam assembly (100) comprises a rectangular frame (110) and a protective bent plate (120). The rectangular frame (110) comprises longitudinal beams (111) and transverse beams (112). The two longitudinal beams (111) are arranged in parallel, and a plurality of transverse beams (112) are arranged along the length direction of the longitudinal beam (111), and two ends of the transverse beam (112) are connected with the two longitudinal beams (111) respectively. The protective bent plate (120) is arranged between two adjacent transverse beams (112) and connected with the transverse beams (112). The protective bent plate (120) is provided with four bent edges, and the four bent edges form a rectangle.

9. A box conveyor line, characterized in that The support beam frame for the box conveying line comprises the support beam frame for the box conveying line according to any one of claims 1-8, and further comprises a turnover device, and the turnover device comprises a first conveying roller group (310), a second conveying roller group (320) and a turnover mechanism (330). The first conveying roller group (310) and the second conveying roller group (320) are arranged in parallel, and the turnover mechanism (330) is installed between the first conveying roller group (310) and the second conveying roller group (320).

10. The box conveyor line according to claim 9, characterized in that The turnover mechanism (330) comprises a rotating shaft (331) and a turnover lever group (332), and the rotating shaft (331) is arranged between the first conveying roller group (310) and the second conveying roller group (320) and is parallel to the first conveying roller group (310) and the second conveying roller group (320). A plurality of turnover levers (332) are distributed around the axis of the rotating shaft (331), and the rotating shaft (331) rotates around its own axis to drive the turnover lever group (332) to rotate. The turnover lever group (332) comprises a plurality of turnover levers arranged along the axis of the rotating shaft (331). The turnover levers are staggered with the rollers of the first conveying roller group (310) and the rollers of the second conveying roller group (320).

Images