CN213737259U - Article conveying mechanism - Google Patents

Abstract

The utility model relates to the technical field of article sorting, in particular to an article conveying mechanism, which comprises a frame, a supporting roll and a belt conveying assembly, wherein the frame comprises two side plates arranged at intervals along a first direction and a supporting plate connected between the two side plates, the supporting plate is provided with a slot with a first opening at the top, the supporting roll can be embedded in the slot, and the axis of the supporting roll extends along the first direction; the belt conveying assembly comprises a conveying belt and two first rollers arranged in parallel with the supporting roller, two ends of each first roller are respectively supported by two side plates, the two first rollers are respectively arranged at two ends of the supporting plate along the second direction, the supporting roller and the two first rollers are arranged at parallel intervals, the supporting roller and the two first rollers are higher than the upper surface of the supporting plate, the conveying belt is sleeved on the two first rollers, the second direction and the first direction form an included angle, the supporting roller is only required to be taken out of or put into a groove through the first opening to complete dismounting, additional tools are not needed, and the belt conveying assembly is simple to operate.

Description

Article conveying mechanism

Technical Field

The utility model relates to an article letter sorting technical field especially relates to an article conveying mechanism.

Background

The existing article conveying mechanism generally adopts a conveying belt to convey articles, the article conveying mechanism comprises two side plates which are arranged at intervals, two rollers supported by the two side plates and a conveying belt which is sleeved on the two rollers and supported by the two rollers, if the conveying distance is longer, the distance between the two rollers is larger, in order to avoid the sagging of the conveying belt caused by the heavy articles on the conveying belt, a supporting roller which is parallel to the two rollers is also arranged between the two rollers in the related technology, the two ends of the supporting roller are supported by the two side plates and is used for supporting the conveying belt, however, when the supporting roller is installed, after the two ends of a mandrel of the supporting roller are respectively spliced with the two side walls, a check ring for limiting the axial position of the supporting roller needs to be installed, and the check ring only needs to be operated by using a special tool when being installed and disassembled, so that the installation and the disassembly of the supporting roller are inconvenient, the assembly performance of the article conveying mechanism, The maintainability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an article conveying mechanism to solve the inconvenient problem of backing roll dismouting among the correlation technique.

The utility model provides an article conveying mechanism, which comprises a frame, a supporting roller and a belt conveying assembly, wherein the frame comprises two side plates arranged at intervals along a first direction and a supporting plate connected between the two side plates, the supporting plate is provided with a slot, and the top of the slot is provided with a first opening; the supporting roller can penetrate through the first opening and is embedded in the slot, and the axis of the supporting roller extends along the first direction; the area conveying assembly includes conveyer belt and two first running rollers, every the both ends of first running roller are respectively by two the curb plate supports, along the second direction, two first running roller set up respectively in the both ends of backup pad, just backing roll and two the parallel interval of first running roller three sets up, backing roll and two first running roller three all is higher than the upper surface of backup pad, conveyer belt cover is located two first running roller, two between the first running roller the conveyer belt forms the transport surface that supports and carry article, the backing roll can support the transport surface, the second direction with first direction is the contained angle setting.

As a preferred technical scheme of the article conveying mechanism, the rack comprises two limiting plates, the two limiting plates are inserted into the slot, the two limiting plates are fixed on the supporting plate, each limiting plate is provided with a long slot, the top of each long slot is provided with a second opening, two ends of the supporting roller are inserted into the two long slots in a one-to-one correspondence manner through the two second openings, and two ends of the supporting roller are respectively supported on the bottom surfaces of the two long slots.

As an optimal technical scheme of the article conveying mechanism, the elongated slot is provided with two side faces which are arranged at intervals along the second direction, the two side faces are connected with the bottom face, the supporting roller comprises a mandrel and a roller which is rotatably sleeved on the mandrel, two milling planes are arranged at the end part of the mandrel in parallel, the two milling planes are respectively matched with the two side faces, and two end faces of the roller along the axial direction are respectively opposite to the two limiting plates.

As a preferable technical scheme of the article conveying mechanism, the rack further comprises two reinforcing plates extending along the first direction, the two reinforcing plates are located below the supporting plate, the top ends of the two reinforcing plates are respectively connected with the two edges of the groove along the second direction, the bottom ends of the two reinforcing plates extend downwards, and the roller is located between the two reinforcing plates.

As article conveying mechanism's preferred technical scheme, the frame still includes two all edges the reinforcing plate that first direction extends, two the reinforcing plate all is located the below of backup pad, the reinforcing plate is including being first board and the second board that the contained angle is connected, every the reinforcing plate the first board with the lower surface of backup pad is connected, two the reinforcing plate the second board is followed the relative and interval setting of second direction, the roller is located two between the second board.

As article conveying mechanism's preferred technical scheme, the frame includes diapire and four lateral walls, four the lateral wall is connected end to end in order, the diapire is connected four the bottom of lateral wall, four the top of lateral wall respectively with four edge connection of fluting, the backing roll is located four between the lateral wall, just the backing roll by the diapire supports.

As an optimal technical scheme of the article conveying mechanism, the upper surface of the supporting plate is provided with a plurality of the slots, the slots are arranged in parallel in the second direction at intervals, the article conveying mechanism comprises a plurality of the supporting rollers, and the supporting rollers are embedded in the slots in a one-to-one correspondence manner.

As a preferable technical scheme of the article conveying mechanism, the supporting roller is not lower than the two first rollers.

As a preferable embodiment of the article transport mechanism, the support rollers are disposed at equal distances from both ends thereof to the adjacent side plates in the first direction.

As an optimal technical scheme of the article conveying mechanism, the belt conveying assembly further comprises a motor and a second roller, the motor and the second roller are arranged below the supporting plate, the article conveying mechanism further comprises a third roller, the third roller is arranged along the article conveying direction, the second roller and the third roller are arranged between the two first rollers at intervals, the second roller and the third roller are supported on the two side plates, the conveying belt is sleeved with the second roller, an output shaft of the motor is connected with the end part of the second roller in a transmission manner, the third roller is arranged below the conveying belt, and the third roller is used for supporting the conveying belt.

The utility model has the advantages that:

the utility model provides an article conveying mechanism, which comprises a frame, a supporting roller and a belt conveying component, wherein the frame comprises two side plates arranged at intervals along a first direction and a supporting plate connected between the two side plates, the supporting plate is provided with a slot, and the top of the slot is provided with a first opening; the supporting roll can penetrate through the first opening and is embedded in the slot, and the axis of the supporting roll extends along the first direction; the belt conveying assembly comprises a conveying belt and two first rollers, the two ends of each first roller are respectively supported by two side plates, the second direction is followed, the two first rollers are respectively arranged at the two ends of the supporting plate, the parallel interval of the supporting roller and the two first rollers is arranged, the supporting roller and the two first rollers are all higher than the upper surface of the supporting plate, the conveying belt sleeve is arranged on the two first rollers, the conveying belt between the two first rollers forms a conveying surface for supporting and conveying articles, the conveying surface can be supported by the supporting roller, and the second direction and the first direction are arranged in an included angle. When the supporting roller needs to be installed, the supporting roller is only needed to be placed into the groove through the first opening; when the supporting roller needs to be disassembled, the supporting roller only needs to be taken out from the groove through the first opening, no additional tool is needed for disassembling and assembling, and the operation is simple and rapid.

Drawings

Fig. 1 is a schematic structural view of an article conveying mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view of a part of the structure of an article conveying mechanism according to an embodiment of the present invention;

FIG. 3 is an exploded view of a portion of an article transport mechanism according to an embodiment of the present invention;

FIG. 4 is an enlarged view at A of FIG. 3;

FIG. 5 is a schematic structural view of an embodiment of a stiffener plate in an article conveying mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of another embodiment of a reinforcing plate in an article conveying mechanism according to an embodiment of the present invention;

FIG. 7 is a second exploded view of a part of the structure of the article conveying mechanism according to the embodiment of the present invention;

FIG. 8 is an enlarged view at B of FIG. 7;

fig. 9 is a cross-sectional view of an article transport mechanism according to an embodiment of the present invention.

In the figure:

1-a frame; 11-side plate; 12-a support plate; 121-slotting; 122 — a first opening; 123-card slot; 13-a limiting plate; 131-long groove; 132-a second opening; 133-bottom surface; 134-side; 135-a guide surface; 136-hanging ear; 14-a reinforcing plate; 141-a first plate; 142-a second plate;

2-supporting rolls; 21-a mandrel; 211-milling a plane; 22-a roller;

31-a conveyor belt; 32-a first roller; 33-a second roller;

4-the third roller.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Fig. 1 is a schematic structural view of an article conveying mechanism according to an embodiment of the present invention; fig. 2 is a schematic view of a part of the structure of an article conveying mechanism according to an embodiment of the present invention; FIG. 3 is an exploded view of a portion of an article transport mechanism according to an embodiment of the present invention; FIG. 4 is an enlarged view at A of FIG. 3; FIG. 5 is a schematic structural view of an embodiment of a stiffener plate in an article conveying mechanism according to an embodiment of the present invention; FIG. 6 is a schematic structural view of another embodiment of a reinforcing plate in an article conveying mechanism according to an embodiment of the present invention; FIG. 7 is a second exploded view of a part of the structure of the article conveying mechanism according to the embodiment of the present invention; FIG. 8 is an enlarged view at B of FIG. 7; fig. 9 is a cross-sectional view of an article conveying mechanism according to an embodiment of the present invention. Referring to fig. 1 to 9, the present embodiment provides an article conveying mechanism, which includes a frame 1, a supporting roller 2 and a belt conveying assembly. The rack 1 comprises two side plates 11 arranged at intervals along a first direction and a support plate 12 connected between the two side plates 11, the support plate 12 is provided with a slot 121, and the top of the slot 121 is provided with a first opening 122; the support roller 2 can pass through the first opening 122 and is embedded in the slot 121, and the axis of the support roller 2 extends along the first direction; the belt conveying assembly comprises a conveying belt 31 and two first rollers 32, two ends of each first roller 32 are respectively supported by two side plates 11, along the second direction, the two first rollers 32 are respectively arranged at two ends of a supporting plate 12, the supporting roller 2 and the two first rollers 32 are arranged at a parallel interval, the supporting roller 2 and the two first rollers 32 are higher than the upper surface of the supporting plate 12, the conveying belt 31 is sleeved on the two first rollers 32, the conveying belt 31 between the two first rollers 32 forms a conveying surface for supporting and conveying articles, the conveying roller 2 can support the conveying surface, and the second direction and the first direction are arranged at an included angle. In this embodiment, the first direction is shown as the ab direction in fig. 1, and the second direction is shown as the cd direction in fig. 1.

In the article conveying mechanism provided by the embodiment, when the supporting roller 2 needs to be installed, the supporting roller 2 only needs to be placed into the slot 121 through the first opening 122; when the supporting roller 2 needs to be disassembled, the supporting roller 2 only needs to be taken out of the slot 121 through the first opening 122, no additional tool is needed for disassembling and assembling, and the operation is simple and rapid. Preferably, the support plate 12 may also be used to support the conveyor belt 31 when the conveyed article is heavy, to prevent the conveyor belt 31 from sagging excessively. Further preferably, the first direction is perpendicular to the second direction, and in other embodiments, the first direction and the second direction may be set to other angles as needed.

Optionally, referring to fig. 3 to 7, the frame 1 includes two limiting plates 13, the two limiting plates 13 are inserted into the slots 121, the two limiting plates 13 are fixed to the support plate 12, the limiting plate 13 is provided with long slots 131, the top of the long slot 131 is provided with second openings 132, two ends of the support roller 2 are inserted into the two long slots 131 through the two second openings 132 in a one-to-one correspondence manner, and two ends of the support roller 2 are respectively supported on the bottom surfaces 133 of the two long slots 131. By providing the limiting plate 13 and providing the elongated slot 131 on the limiting plate 13, the supporting roller 2 can be effectively limited in the second direction. Preferably, the bottom surface 133 of the slot 131 is curved to better fit the support roller 2. It is further preferable that a guide surface 135 is provided at the second opening 132 of the long groove 131, and the guide surface 135 is used for guiding the support roller 2 into the long groove 131, so as to further improve the efficiency of mounting and dismounting the support roller 2. While the embodiment illustrates the guide surface 135 as a ramp, in other embodiments, the guide surface 135 may be curved.

As an alternative, the frame 1 includes a bottom wall (not shown in the drawings) and four side walls (not shown in the drawings), the four side walls are sequentially connected end to end, the bottom wall is connected to bottom ends of the four side walls, top ends of the four side walls are respectively connected to four edges of the slot 121, the supporting roller 2 is located between the four side walls, the supporting roller 2 is supported by the bottom wall, and when the conveying belt 31 conveys articles in the second direction, the conveying belt 31 can drive the supporting roller 2 to roll between the four side walls, so as to ensure smoothness of conveying the articles by the conveying belt 31.

Optionally, referring to fig. 8, in the present embodiment, the limiting plate 13 is respectively provided with two hanging lugs 136 along the top edge of the second direction, the supporting plate 12 is further provided with two clamping grooves 123, the two clamping grooves 123 are arranged at intervals along the second direction, the two clamping grooves 123 are both communicated with the slot 121, the two hanging lugs 136 are in inserting fit with the two clamping grooves 123, so that the position stability of the limiting plate 13 and the supporting plate 12 can be ensured. Preferably, the top surface of the restriction plate 13 is not higher than the top surface of the support plate 12 to prevent the restriction plate 13 from contacting the conveyor belt 31 to cause the conveyor belt 31 to be scraped. In other embodiments, the limiting plate 13 may be connected with the supporting plate 12 by a fastener or welded.

Optionally, referring to fig. 4, 5 and 8, the elongated slot 131 has two side surfaces 134 arranged at intervals along the second direction, both the two side surfaces 134 are connected with the bottom surface 133, the support roller 2 includes a mandrel 21 and a roller 22 rotatably sleeved on the mandrel 21, two milling planes 211 are arranged at the end of the mandrel 21 in parallel, the two milling planes 211 are respectively matched with the two side surfaces 134, and two end surfaces of the roller 22 along the axial direction are respectively opposite to the two limit plates 13. The two milling planes 211 are matched with the two side surfaces 134 to prevent the mandrel 21 from rotating along with the roller 22, so that the rotating smoothness of the roller 22 is improved, the abrasion of the bottom surface 133 or the side surface 134 of the long groove 131 caused by the rotation of the mandrel 21 is reduced, and the service life is prolonged; meanwhile, the two axial end faces of the roller 22 can be limited by the two limiting plates 13, so that the position deviation of the roller 22 is prevented, and the conveying stability of the conveying belt 31 is ensured. It is understood that the angle between the two milling planes 211 is not limited in this embodiment, and in other embodiments, the two milling planes 212 may be disposed at other angles. And in other embodiments, only one milling plane 211 may be provided; or the spindle 21 and the roller 22 may be arranged so that they are both rotatable relative to the support plate 12.

Optionally, referring to fig. 6, the frame 1 further includes two reinforcing plates 14 extending along the first direction, the two reinforcing plates 14 are located below the supporting plate 12, top ends of the two reinforcing plates 14 are respectively connected to two edges of the slot 121 along the second direction, bottom ends of the two reinforcing plates 14 extend downward, and the roller 22 is located between the two reinforcing plates 14. By arranging the reinforcing plates 14, the overall strength of the supporting plate 12 can be enhanced, foreign matters can be prevented from contacting the roller 22 through the two reinforcing plates 14, and the normal use of the roller 22 is guaranteed. Preferably, the two reinforcing plates 14 are provided integrally with the support plate 12. In other embodiments, the two reinforcing plates 14 may be provided separately from the support plate 12, as desired.

As an alternative, referring to fig. 5, the frame 1 further includes two reinforcing plates 14 extending along a first direction, the two reinforcing plates 14 are located below the supporting plate 12, the reinforcing plates 14 include a first plate 141 and a second plate 142 connected at an included angle, the first plate 141 of each reinforcing plate 14 is connected to the lower surface of the supporting plate 12, the second plates 142 of the two reinforcing plates 14 are opposite and spaced along a second direction, and the roller 22 is located between the two second plates 142. So configured, it also serves to enhance the overall strength of the support plate 12 and also prevents foreign matter from contacting the roller 22. Preferably, the first plate 141 and the second plate 142 are vertically connected, and in other embodiments, the first plate 141 and the second plate 142 may be disposed at other angles as needed.

Optionally, referring to fig. 2, the upper surface of the supporting plate 12 is provided with a plurality of slots 121, the plurality of slots 121 are arranged in parallel and at intervals along the second direction, the article conveying mechanism includes a plurality of supporting rollers 2, and the plurality of supporting rollers 2 are embedded in the plurality of slots 121 in a one-to-one correspondence manner. The conveyor belt 31 is supported by the plurality of support rollers 2, so that the conveyor belt 31 can convey articles smoothly and the conveyor belt 31 can be prevented from drooping.

Alternatively, the support rollers 2 are not lower than the two first rollers 32 to ensure that the support rollers 2 can contact the conveying belt 31, so that the conveying belt 31 can be supported more stably to ensure the stability of the conveying belt 31.

Optionally, the distance between the two ends of the supporting roller 2 and the adjacent side plate 11 is equal in the first direction, specifically, the supporting roller 2 includes a first end and a second end in the first direction, and the distance between the first end and the adjacent side plate 11 is equal to the distance between the second end and the adjacent side plate 11. So set up for can prevent that the conveyer belt 31 from walking partially at the in-process that removes when the supporting roller 2 supports and carries conveyer belt 31, guarantee that conveyer belt 31 can smoothly move.

Optionally, referring to fig. 9, the belt conveying assembly further includes a motor and a second roller 33, the motor (not shown in the drawings) and the second roller 33 are both disposed below the supporting plate 12, the article conveying mechanism further includes a third roller 4, the second roller 33 and the third roller 4 are disposed between the two first rollers 32 at intervals along the article conveying direction, the second roller 33 and the third roller 4 are both supported on the two side plates 11, the conveying belt 31 is sleeved with the second roller 33, an output shaft of the motor is in transmission connection with an end portion of the second roller 33, the third roller 4 is disposed below the conveying belt 31, and the third roller 4 is used for supporting the conveying belt 31. In other embodiments, the motor can be in transmission connection with one of the two first rollers 32.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An article conveying mechanism, comprising: a frame (1), a support roller (2) and a belt conveying assembly, wherein,

the rack (1) comprises two side plates (11) arranged at intervals along a first direction and a support plate (12) connected between the two side plates (11), the support plate (12) is provided with a slot (121), and the top of the slot (121) is provided with a first opening (122);

the supporting roller (2) can penetrate through the first opening (122) and is embedded in the slot (121), and the axis of the supporting roller (2) extends along the first direction;

the area conveying assembly includes conveyer belt (31) and two first running roller (32), every the both ends of first running roller (32) are by two respectively curb plate (11) support, along the second direction, two first running roller (32) set up respectively in the both ends of backup pad (12), just backing roller (2) and two the parallel interval of first running roller (32) three sets up, backing roller (2) and two first running roller (32) three all is higher than the upper surface of backup pad (12), conveyer belt (31) cover is located two first running roller (32), two between first running roller (32) conveyer belt (31) form the transport surface that supports and carry article, backing roller (2) can support the transport surface, the second direction with first direction is the contained angle setting.

2. The article conveying mechanism according to claim 1, wherein the rack (1) includes two limiting plates (13), the two limiting plates (13) are inserted into the slot (121), the two limiting plates (13) are fixed to the support plate (12), each limiting plate (13) is provided with a long slot (131), the top of each long slot (131) is provided with a second opening (132), two ends of the support roller (2) are inserted into the two long slots (131) through the two second openings (132) in a one-to-one correspondence manner, and two ends of the support roller (2) are respectively supported on the bottom surfaces (133) of the two long slots (131).

3. The article conveying mechanism according to claim 2, wherein the elongated slot (131) has two side surfaces (134) spaced apart from each other along the second direction, the two side surfaces (134) are connected to the bottom surface (133), the support roller (2) includes a mandrel (21) and a roller (22) rotatably sleeved on the mandrel (21), two milling planes (211) are disposed at ends of the mandrel (21) in parallel, the two milling planes (211) are respectively engaged with the two side surfaces (134), and two end surfaces of the roller (22) along the axial direction are respectively opposite to the two limit plates (13).

4. The article conveying mechanism according to claim 3, wherein the frame (1) further includes two reinforcing plates (14) each extending in the first direction, the two reinforcing plates (14) are each located below the support plate (12), top ends of the two reinforcing plates (14) are respectively connected to two edges of the slot (121) in the second direction, bottom ends of the two reinforcing plates (14) each extend downward, and the roller (22) is located between the two reinforcing plates (14).

5. The article conveying mechanism according to claim 3, wherein the frame (1) further comprises two reinforcing plates (14) extending along the first direction, the two reinforcing plates (14) are located below the supporting plate (12), the reinforcing plates (14) comprise a first plate (141) and a second plate (142) which are connected at an included angle, the first plate (141) of each reinforcing plate (14) is connected with the lower surface of the supporting plate (12), the second plates (142) of the two reinforcing plates (14) are arranged oppositely and at intervals along the second direction, and the roller (22) is located between the two second plates (142).

6. The article conveying mechanism according to claim 1, wherein the frame (1) includes a bottom wall and four side walls, the four side walls are sequentially connected end to end, the bottom wall is connected to bottom ends of the four side walls, top ends of the four side walls are respectively connected to four edges of the slot (121), the supporting roller (2) is located between the four side walls, and the supporting roller (2) is supported by the bottom wall.

7. The article conveying mechanism according to any one of claims 1 to 6, wherein the upper surface of the support plate (12) is provided with a plurality of the slots (121), the plurality of slots (121) are arranged in parallel and at intervals along the second direction, the article conveying mechanism includes a plurality of the support rollers (2), and the plurality of support rollers (2) are embedded in the plurality of slots (121) in a one-to-one correspondence.

8. An article conveying mechanism according to any one of claims 1-6, characterized in that the supporting roller (2) is not lower than two of the first rollers (32).

9. The article conveying mechanism according to any one of claims 1 to 6, wherein the distance between both ends of the supporting roller (2) and the adjacent side plate (11) is equal in the first direction.

10. The article transport mechanism according to any one of claims 1 to 6, the belt conveying assembly further comprises a motor and a second roller (33), the motor and the second roller (33) are both arranged below the support plate (12), the article conveying mechanism also comprises a third roller (4), the second roller (33) and the third roller (4) are arranged between the two first rollers (32) at intervals along the article conveying direction, and the second roller (33) and the third roller (4) are supported on the two side plates (11), the conveying belt (31) is sleeved with the second roller (33), an output shaft of the motor is in transmission connection with the end part of the second roller (33), the third roller (4) is located below the conveying belt (31), and the third roller (4) is used for supporting the conveying belt (31).

Images