Packaging bag jolting, shaping and conveying device

Abstract

The utility model discloses a packaging bag jolting, shaping and conveying device which is characterized in that an outlet of a climbing belt conveyor is provided with a jolting conveyor, and the jolting conveyor is provided with a plurality of square rollers which are parallel to one another and extend along the breadth direction; two mutually spliced belt conveyors are arranged at an outlet of the bumping conveyor, an upper dust suction hood is arranged above a gap between the two belt conveyors, a brush roller for cleaning the top surface of a packaging bag and a pressing roller for flattening the top of the packaging bag are arranged in an inner cavity of the upper dust suction hood, and the brush roller is located in the middle of the inner cavity of the upper dust suction hood; the pressing rollers are located on the front side and the rear side of the brush roller respectively, and the brush roller and the pressing rollers are parallel in axis and extend in the breadth direction of the belt conveyor. According to the packaging bag jolting, shaping and conveying device, the packaging bags are jolted firstly and then leveled, so that the packaging bags are leveled and are convenient to stack.

Description

Technical Field

[0001] This utility model relates to a packaging bag flattening and shaping conveying device, belonging to the technical field of bagged material shaping equipment. Background Technology

[0002] Flour bags, secondary flour bags, or other packaging bags with a significant amount of powder attached need to be shaped before stacking or boxing. Specifically, this involves flattening the bags as much as possible to prevent them from tilting or tipping over when stacked. Traditional shaping methods often use plate pressing or roller pressing, which have some significant problems.

[0003] For example, Chinese utility model patent with publication number CN 221190688U discloses a woven bag shaping machine, including a main frame, a support frame at the top of the main frame, several shaping shafts inside the main frame, one end of each shaping shaft being mounted on a sprocket, chains being mounted on the outside of the sprockets, several rollers being mounted on the top of the support frame, a reducer being mounted on the side of the main frame, a drive motor being mounted on the reducer, conveyor belts being mounted at the front and rear ends of the main frame, and support legs being mounted at the bottom ends of the main frame and the conveyor belts, the rotating end of the drive motor being concentrically connected to the input end of the reducer, the output end of the reducer being concentrically connected to one of the shaping shafts, the shaping shaft being rotatably connected to the main frame, the rollers being rotatably connected to the support frame, and the longitudinal section of the shaping shaft being a regular polygon.

[0004] This technical solution can flatten and shape woven bags for products such as bagged rice and bagged flour, facilitating subsequent conveying and palletizing. However, it has the following problems: when the bags pass through the shaping machine, the flour inside is squeezed and spills out from the seams, and a certain amount of dust often adheres to the outside of the packaging. However, existing shaping and conveying equipment is not equipped with an effective dust removal device, making it unable to handle the dust accumulated on the conveying equipment or during conveying. This results in dust generated during conveying not being cleaned up in a timely manner, accumulating not only on the conveying equipment but also spreading into the surrounding environment.

[0005] This situation not only affects the cleanliness of the production area and the quality of the working environment, but also adversely impacts the long-term operation of equipment, shortening its lifespan. More seriously, dust accumulation can become a trigger for dust explosions, increasing the risk of dust explosions and posing a potential safety hazard. Furthermore, untreated dust can become moldy, promote bacterial growth, or breed pests, further threatening food safety and hygiene, and increasing the labor costs required for cleaning. Utility Model Content

[0006] The purpose of this utility model is to overcome the problems existing in the prior art and provide a packaging bag flattening and shaping conveying device, which first flattens the packaging bag and then straightens it, so that the packaging bag is flat and easy to stack.

[0007] To solve the above technical problems, this utility model provides a packaging bag flattening and shaping conveyor device, including an inclined belt conveyor. The outlet of the inclined belt conveyor is equipped with a flattening conveyor, which has multiple parallel square rollers extending along the width direction. The outlet of the flattening conveyor is equipped with two interconnected belt conveyors. An upper dust suction hood is provided above the gap between the two belt conveyors. The inner cavity of the upper dust suction hood is equipped with a brush roller for cleaning the top surface of the packaging bag and a pressure roller for flattening the top of the packaging bag. The brush roller is located in the middle of the inner cavity of the upper dust suction hood, and the pressure rollers are located on the front and rear sides of the brush roller, respectively. The axes of the brush roller and the pressure roller are parallel to each other and both extend along the width direction of the belt conveyor.

[0008] Furthermore, adjacent square rollers are sequentially connected by a flattening transmission chain and driven by a flattening reduction motor.

[0009] Furthermore, the pressure roller that the packaging bag contacts first is a patterned pressure roller, and the pressure roller that it contacts later is a flat pressure roller. The patterned pressure roller has multiple single rollers evenly distributed on its outer periphery.

[0010] Furthermore, each of the single rollers has bearings at both ends and is supported on a circular end plate.

[0011] Furthermore, a gantry bracket spanning the upper dust hood is provided on the outer side of the upper dust hood, and a shaping reduction motor for driving the pressure roller and brush roller is installed on the top of the gantry bracket.

[0012] Furthermore, the outlet of the end belt conveyor is equipped with an unloading station conveyor, and the end of the unloading station conveyor is equipped with a packing transfer robot.

[0013] Furthermore, the unloading station conveyor includes an unloading frame, the upper part of which is provided with multiple parallel rollers, each roller having a bearing at both ends and a square tenon at the roller shaft end, the square tenons being respectively embedded in the opening grooves at the upper end of the side wall panels of the frame, the upper ends of the two side wall panels of the frame having multiple gripping and clearance grooves with openings at the upper ends, the position of each gripping and clearance groove corresponding to the gap between adjacent rollers; each roller has a roller arc groove at one end;

[0014] Below the roller is a discharge drive shaft extending along the conveying direction of the discharge frame. Both ends of the discharge drive shaft are supported in discharge drive shaft bearing seats, which are fixed to the end plate of the frame by bolts. A discharge drive shaft sprocket is installed at one end of the discharge drive shaft, and the discharge drive shaft sprocket is connected to the discharge drive sprocket at the output end of the discharge reduction motor via a discharge chain.

[0015] The unloading drive shaft is equipped with unloading drive wheels that correspond one-to-one with the rollers. Each unloading drive wheel is provided with an arc groove. Each arc groove of the unloading drive wheel is connected to the corresponding arc groove of the roller through an O-ring.

[0016] The beneficial effects of this utility model are as follows: 1. The packaging bag is first flattened by a square roller, and then flattened and shaped by a shaping machine pressure roller. Dust brushes are provided at both ends of the drive shaft. The dust brushes rotate with the drive shaft and sweep the surface of the packaging bag, raising the powder attached to the surface of the bag and sucking it away by negative pressure vacuum.

[0017] 2. Because the suction hood draws air outward, it creates negative pressure inside the shaping machine. When the double rollers of the shaping machine squeeze and straighten the packaging bag, some of the powder in the packaging bag will be squeezed out from the gaps in the packaging bag and sucked away by the suction hood. This effectively improves the packaging bag conveying environment and reduces the growth of bacteria or pests due to powder accumulation.

[0018] 3. Multiple unloading drive wheels are installed on the unloading drive shaft, each corresponding to a roller. The unloading drive wheels and rollers are connected by an O-belt drive, which is simple and reliable. During operation, each roller is driven independently, and the wear of two or three O-belts will not affect the operation of the overall equipment. A spare O-belt storage rack is set near the unloading drive shaft, which can be disassembled and replaced in time without disassembling the unloading drive shaft, greatly improving the efficiency of installation and maintenance. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The drawings are provided for reference and illustration only and are not intended to limit the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of the packaging bag flattening and shaping conveying device of this utility model;

[0021] Figure 2 This is a top view of the flat conveyor in this utility model;

[0022] Figure 3 for Figure 2 A three-dimensional image;

[0023] Figure 4 This is a perspective view of the shaping mechanism in this utility model;

[0024] Figure 5 This is the front view of the shaping mechanism;

[0025] Figure 6 for Figure 5 Top view;

[0026] Figure 7 for Figure 5 A three-dimensional image;

[0027] Figure 8 This is a front view of the unloading station conveyor in this utility model;

[0028] Figure 9 for Figure 8 A three-dimensional image;

[0029] Figure 10 A 3D view of the drive mechanism for the unloading station;

[0030] In the diagram: 1. Inclined belt conveyor; 2. Flattening conveyor; 2a. Flattening geared motor; 2b. Flattening drive chain; 2c. Square roller;

[0031] 3. Belt conveyor; 4. Brush assembly; 5a. Upper dust hood; 5b. Lower dust hood; 6. Shaping geared motor; 6a. Shaping motor sprocket; 7. Shaping main chain; 8. Pressure roller; 8a. Pressure roller sprocket; 9. Bridge chain; 10. Brush roller; 10a. Brush roller sprocket; 11. Gantry bracket; 12. Fixed shaft; 13. Spring shaft; 14. Spring; 15. Adjusting nut; 16. Swing arm connecting rod; 16a. Connecting rod lug; 17. Pressure roller swing arm;

[0032] 18. Unloading frame; 18a. Frame side wall panel; 18a1. Gripping clearance groove; 18b. Frame end plate; 18b1. Vertical long groove; 19. Unloading roller; 19a. Roller arc groove; 20. Unloading drive shaft bearing seat; 21. Unloading drive shaft; 22. Unloading drive wheel; 23. Unloading drive shaft sprocket; 24. Unloading geared motor; 24a. Unloading drive sprocket; 25. Unloading chain; 26. O-belt; 27. Tensioning support; 28. Tensioning screw; 29. ​​Outlet end plate; 30. Impact baffle; 31. Signal switch; 32. Round steel; 33. U-shaped insert;

[0033] 34. Packaging transfer robot. Detailed Implementation

[0034] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0035] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0037] like Figure 1 As shown, the packaging bag flattening and shaping conveyor device of this utility model includes an inclined belt conveyor 1, a flattening conveyor 2, a belt conveyor 3, a shaping device, a dust removal mechanism, an unloading station conveyor, and a transfer robot 34. Because after the packaging bags are filled, the material concentrates at the bottom of the bags, leaving an uneven gap near the top opening, which is not conducive to stacking, the flattening conveyor 2 is used first to flatten the packaging bags. After flattening, further shaping is performed to completely flatten the packaging bags. Both the flattening and shaping stations are equipped with dust removal devices; this article takes the dust removal at the shaping station as an example. The flattened packaging bags finally enter the unloading station, where the robotic arm of the transfer robot 34 adheres to the upper surface of the packaging bags, transferring and stacking them on a pallet.

[0038] like Figure 2 , Figure 3 As shown, the flattening conveyor 2 is equipped with multiple parallel square rollers 2c extending along the width direction. Adjacent square rollers 2c are connected sequentially by a flattening transmission chain 2b. The square rollers 2c at the head or tail end are driven by a flattening reduction motor 2a. After the flattening reduction motor 2a starts, it drives the square rollers 2c to rotate through the flattening transmission chain 2b. While the square rollers 2c convey the packaging bag forward, their edges and corners manipulate the bottom of the packaging bag, gradually flattening it.

[0039] like Figures 4 to 7 As shown, the shaping device includes a shaping reduction motor 6, a pressure roller 8 and a pressure roller tension adjustment mechanism, and the dust removal device includes a brush 4, an upper dust suction hood 5a, a lower dust suction hood 5b and a brush roller 10.

[0040] Two belt conveyors 3 are connected end to end to continuously transport packaging bags, each driven by a belt motor. A brush 4 is installed in the gap between the two belt conveyors 3, with bristles facing upwards, extending along the width of the belt conveyor 3 and located within the lower dust collection hood 5b. As the packaging bag passes between the two belt conveyors 3, the brush 4 cleans the bottom surface of the packaging bag.

[0041] An upper dust suction hood 5a is provided above the gap between the two belt conveyors. The inner cavity of the upper dust suction hood 5a is provided with a brush roller 10 for cleaning the top surface of the packaging bag and a pressure roller 8 for flattening the top of the packaging bag. The brush roller 10 is located in the middle of the inner cavity of the upper dust suction hood 5a, and the pressure roller 8 is located on the front and rear sides of the brush roller 10 respectively. The axes of the brush roller 10 and the pressure roller 8 are parallel to each other and extend along the width direction of the belt conveyor. A gantry bracket 11 is provided on the outer side of the upper dust suction hood 5a, which spans the upper dust suction hood 5a. A shaping reduction motor 6 for driving the pressure roller 8 and the brush roller 10 is installed on the top of the gantry bracket 11.

[0042] A shaping motor sprocket 6a is mounted on the output shaft end of the shaping reduction motor 6. Brush roller sprockets 10a are mounted on both ends of the brush roller 10. The shaping motor sprocket 6a is connected to the brush roller sprocket 10a on one side and the pressure roller sprocket 8a on the shaft end of the front pressure roller via the shaping main chain 7. The brush roller sprocket 10a on the other side is connected to the pressure roller sprocket 8a of the rear pressure roller via the bridge chain 9. The rear pressure roller sprocket is fixed to the other shaft end of the rear pressure roller.

[0043] After the shaping reduction motor 6 starts, the shaping motor sprocket 6a drives the brush roller sprocket 10a and the pressure roller sprocket at the front pressure roller shaft end to rotate through the shaping main chain 7, thereby driving the brush roller 10 and the front pressure roller to rotate. The brush roller sprocket 10a on the other side of the brush roller 10 drives the rear pressure roller sprocket and the rear pressure roller to rotate through the bridge chain 9.

[0044] The front pressure roller is a patterned pressure roller, composed of multiple evenly distributed small-diameter tubes forming a single roller. Each single roller has bearings at both ends of its shaft, allowing it to rotate freely. The two ends of each single roller are supported on circular end plates, and it is used to initially flatten the top of the packaging bag. The rear pressure roller is a single flat pressure roller, used to flatten the top of the packaging bag as a whole.

[0045] The two sides of the pressure roller 8 are supported on the free ends of the pressure roller swing arm 17, and the root of the pressure roller swing arm 17 is hinged to the shaft end of the brush roller 10. The middle of each pair of pressure roller swing arms 17 is connected by a swing arm connecting rod 16. A pair of connecting rod lugs 16a are welded to the middle section of the swing arm connecting rod 16. The free end of the connecting rod lug 16a is hinged to the lower end of the spring shaft 13. The middle part of the spring shaft 13 passes through the radial through hole of the fixed shaft 12, and springs 14 are pressed on the upper and lower parts of the fixed shaft 12 respectively. An adjusting nut 15 is pressed on the top of the upper spring. The adjusting nut 15 is screwed onto the upper threaded section of the spring shaft 13.

[0046] By adjusting the nut 15 to tighten the spring, the lower end of the spring shaft 13 applies pressure to the swing arm connecting rod 16 through the connecting rod lug 16a. The swing arm connecting rod 16 drives the pressure roller swing arm 17 to press down, and the free end of the pressure roller swing arm 17 drives the pressure roller to press firmly on the packaging bag.

[0047] When the packaging bag moves between the two belt conveyors, the dust at the bottom is brushed up by the brush 4; the dust on the upper surface is lifted up by the rotating brush roller 10. During the leveling process, some of the powder inside the bag will overflow from the gap at the bag opening due to the compression. Since both the upper dust hood 5a and the lower dust hood 5b are under negative pressure, the lifted powder enters the dust removal equipment for processing through the dust suction duct.

[0048] Silicone curtains can be hung at the inlet and outlet of the upper dust hood 5a to reduce air leakage and without hindering the transport of packaging bags.

[0049] like Figures 8 to 10 As shown, the unloading station conveyor includes an unloading frame 18, unloading rollers 19, unloading drive shaft 21, unloading reduction motor 24, and spare belt storage rack. The upper part of the unloading frame 18 is provided with multiple parallel unloading rollers 19. Each unloading roller 19 has a bearing at both ends and a square tenon at the end of the roller shaft. The square tenons are respectively embedded in the opening groove at the upper end of the side wall plate 18a of the frame to prevent the roller shaft from rotating. The unloading roller 19 can rotate around the roller shaft at both ends.

[0050] Each unloading roller 19 has a roller arc groove 19a at one end. Below the unloading roller 19 is an unloading drive shaft 21 extending along the conveying direction of the frame. Both ends of the unloading drive shaft 21 are supported in unloading drive shaft bearing seats 20, which are fixed to the frame end plate 18b by bolts. One end of the unloading drive shaft 21 is equipped with an unloading drive shaft sprocket 6, which is connected to the unloading drive sprocket 24a at the output end of the unloading reduction motor 24 via an unloading chain 8. Unloading drive wheels 22, corresponding one-to-one with the unloading roller 19, are mounted on the unloading drive shaft 21. The unloading drive wheels 22 are fixed to the unloading drive shaft 21 with set screws, and each unloading drive wheel 22 has an unloading drive wheel arc groove. Each unloading drive wheel arc groove is connected to the corresponding roller arc groove 19a via an O-ring 26.

[0051] After the unloading reduction motor 24 starts, it drives the unloading drive shaft sprocket 6 to rotate through the unloading drive sprocket 24a and the unloading chain 8. The unloading drive shaft sprocket 6 drives the unloading drive shaft 21 and each unloading drive wheel 22 to rotate. Each unloading drive wheel 22 drives each unloading roller 19 to rotate through the O-belt 26. Each unloading roller 19 supports the packaging bag and realizes the forward conveying of the packaging bag.

[0052] Both the unloading drive sprocket 24a and the unloading drive shaft sprocket 6 are double-row sprockets. When conveying lighter materials, they are driven on one side only. This way, when the teeth of one sprocket wear out, the unloading chain 8 can be directly mounted on the other set of teeth for use. When one of the O-belts 26 breaks, the corresponding unloading roller loses power and becomes a driven free roller. The unloading rollers on the adjacent sides can still convey the packaging bags forward, avoiding production line shutdown.

[0053] Each discharge roller 19 is also provided with a roller arc groove 19a on the other end. When the roller arc groove 19a on one side is worn, the discharge roller can be directly reversed for use.

[0054] The outlet end of the unloading frame 18 is equipped with an upwardly mounted outlet end plate 29. An impact baffle 30 is located on the side of the outlet end plate 29 facing the end unloading roller. The lower end of the impact baffle 30 is hinged to the outlet end plate 29. A signal switch 14 is mounted on the upper part of the outlet end plate 29, with its probe pointing towards the back of the impact baffle 30. The signal switch 14 can be a proximity switch or a limit switch. When the material is delivered to the designated position, it impacts the impact baffle 30, causing the baffle 30 to tilt backward, thus triggering a signal from the signal switch 14. Upon receiving the signal, the robot performs a grasping action.

[0055] The upper end of the side wall plate 18a of the two frames is provided with multiple gripping and clearance grooves 18a1 with openings at the top. The position of each gripping and clearance groove 18a1 corresponds to the gap between the adjacent unloading rollers 19, which makes it easy for the robot arm to insert into the unloading roller 19 from the gripping and clearance groove 18a1, and then lift the object upward to get it off the unloading roller 19 and transfer it. During the gripping process, interference with the O-belt 26 can be avoided.

[0056] The frame end plate 18b is provided with a vertical long groove 18b1 for the unloading drive shaft bearing seat 20 to float up and down. Tensioning supports 27 are fixed to the upper parts of the two frame end plates 18b respectively, and tensioning screws 28 are screwed into the tensioning supports 27. The lower ends of the tensioning screws 28 press against the top center of the corresponding unloading drive shaft bearing seat 20. After each O-belt 26 is installed in place, the tensioning screws 28 are turned to move the tensioning supports 27 down, thus tensioning each O-belt 26. Then, the bolts of the unloading drive shaft bearing seat 20 are tightened to fix it to the frame end plate 18b.

[0057] Multiple spare belt racks are provided along the length of the unloading drive shaft 21. Each spare belt rack includes three U-shaped inserts 16 connected together by round steel bars 32. The round steel bars 32 pass around the unloading drive shaft 21 and are fixed at both ends to the unloading machine frame. Several spare O-belts 26 are placed on the spare belt racks.

[0058] Since spare O-belts are pre-installed on the unloading drive shaft 21 during equipment installation, they can be directly used to replace broken O-belts. Specifically, loosen the fastening bolts of the unloading drive shaft bearing seat 20 and rotate the tension screw 28 upwards to release the tension of each O-belt. Then, remove the spare O-belt from the spare belt rack, lift the drive end of the adjacent unloading roller, insert the O-belt, and re-insert the square tenon at the roller end into the opening groove at the upper end of the side wall plate 18a of the frame. Then, directly install the O-belt onto the adjacent roller's arc groove 19a and the adjacent unloading drive wheel 22, and re-tension the unloading drive shaft 21.

[0059] If the broken O-ring is separated from the spare O-ring holder by one unloading roller, first move the adjacent O-ring to its adjacent unloading roller, then remove the spare O-ring and replace it with the unloading roller adjacent to the spare O-ring holder, and so on. This eliminates the need to disassemble the unloading drive shaft 21, greatly reducing workload and maintenance time.

[0060] When conveying heavier materials, unloading drive shafts 21 are respectively installed below both ends of the unloading rollers. The roller arc grooves 19a at both ends of each unloading roller are connected to the corresponding unloading drive wheels 22 below via O-rings. That is, double-sided drive is used under heavy load to prevent the unloading rollers from wearing out due to heavy load.

[0061] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A packaging bag flattening and shaping conveyor device, comprising an inclined belt conveyor, characterized in that: The outlet of the inclined belt conveyor is equipped with a flattening conveyor, which has multiple parallel square rollers extending along the width direction. The outlet of the flattening conveyor is equipped with two belt conveyors spliced ​​together. Above the gap between the two belt conveyors is an upper dust suction hood. The inner cavity of the upper dust suction hood is equipped with a brush roller for cleaning the top surface of the packaging bag and a pressure roller for flattening the top of the packaging bag. The brush roller is located in the middle of the inner cavity of the upper dust suction hood, and the pressure roller is located on the front and rear sides of the brush roller. The axes of the brush roller and the pressure roller are parallel to each other and both extend along the width direction of the belt conveyor.

2. The packaging bag flattening and shaping conveying device according to claim 1, characterized in that: Adjacent square rollers are connected sequentially by a flattening transmission chain and driven by a flattening reduction motor.

3. The packaging bag flattening and shaping conveying device according to claim 1, characterized in that: The pressure roller that the packaging bag contacts first is a patterned pressure roller, and the pressure roller that it contacts later is a flat pressure roller. Multiple single rollers are evenly distributed on the outer periphery of the patterned pressure roller.

4. The packaging bag flattening and shaping conveying device according to claim 3, characterized in that: Each of the single rollers has bearings at both ends and is supported on a circular end plate.

5. The packaging bag flattening and shaping conveying device according to claim 1, characterized in that: The outer side of the upper dust hood is provided with a gantry bracket that spans the upper dust hood, and the top of the gantry bracket is equipped with a shaping reduction motor that drives the pressure roller and brush roller.

6. The packaging bag flattening and shaping conveying device according to claim 1, characterized in that: The outlet of the end belt conveyor is equipped with an unloading station conveyor, and the end of the unloading station conveyor is equipped with a packing transfer robot.

7. The packaging bag flattening and shaping conveying device according to claim 6, characterized in that: The unloading station conveyor includes an unloading frame. The upper part of the unloading frame is provided with multiple parallel rollers. Each roller has a bearing at both ends and a square tenon at the end of the roller shaft. The square tenons are respectively embedded in the opening grooves at the upper end of the side wall panels of the frame. The upper end of the side wall panels of the two frames is provided with multiple gripping and clearance grooves with openings at the top. The position of each gripping and clearance groove corresponds to the gap between adjacent rollers. Each roller has a roller arc groove at one end. Below the roller is a discharge drive shaft extending along the conveying direction of the discharge frame. Both ends of the discharge drive shaft are supported in discharge drive shaft bearing seats, which are fixed to the end plate of the frame by bolts. A discharge drive shaft sprocket is installed at one end of the discharge drive shaft, and the discharge drive shaft sprocket is connected to the discharge drive sprocket at the output end of the discharge reduction motor via a discharge chain. The unloading drive shaft is equipped with unloading drive wheels that correspond one-to-one with the rollers. Each unloading drive wheel is provided with an arc groove. Each arc groove of the unloading drive wheel is connected to the corresponding arc groove of the roller through an O-ring.

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