A feeding device for packaging carton production and processing

Abstract

The application discloses a kind of feeding devices for packaging carton production and processing, it is related to feeding device technical field, including first mounting seat and second mounting seat, the first mounting seat is equipped with feeding mechanism, the second mounting seat is equipped with feeding mechanism, the side of the second mounting seat is equipped with conveying table, the conveying table is equipped with auxiliary guide-out mechanism;The feeding mechanism includes the side mounting bracket being arranged in the two sides of the second mounting seat, the opposite side outer wall of two side mounting brackets is equipped with pivot, and the side outer wall of one side mounting bracket is equipped with motor.The feeding device for packaging carton production and processing disclosed in the application replaces traditional ejection type impact by spring elastic buffer mechanism, realizes that paperboard is gently separated and stably guided out, avoids paperboard corner, tearing, effectively improves feeding protection and guiding precision.

Description

Technical Field

[0001] This invention relates to the field of feeding device technology, and in particular to a feeding device for the production and processing of packaging paper boxes. Background Technology

[0002] In the production and processing of packaging paper boxes, cardboard is the basic raw material. The processing involves creasing and cutting, which are crucial steps in determining the quality of the formed paper box. Before being fed into the creasing machine or die-cutting machine, the stacked cardboard sheets need to be fed accurately and individually to the processing station.

[0003] However, currently, most traditional cardboard feeding devices use a single ejector feeding method. This type of method usually relies on an energy storage mechanism formed by a cylinder or spring to release a large thrust instantaneously, forcibly separating the bottom layer of cardboard from the stack and throwing it at high speed onto the conveyor belt. Although this "ejector" structure improves the speed of single feeding to some extent, in actual production applications, the huge acceleration and impact force generated by the ejection instant can easily cause cardboard (especially cardboard with a large basis weight or brittle material) to fold, tear or scratch its surface, resulting in an increased scrap rate. Summary of the Invention

[0004] This invention discloses a feeding device for the production and processing of packaging paper boxes, which aims to solve the technical problem that traditional feeding equipment has a simple structure, makes it difficult to achieve protective feeding, and causes the paperboard to be easily damaged during the feeding process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A feeding device for producing and processing packaging paper boxes includes a first mounting base and a second mounting base. The first mounting base is provided with a feeding mechanism, the second mounting base is provided with a feeding mechanism, and a conveyor table is provided on one side of the second mounting base. An auxiliary discharge mechanism is provided on the conveyor table. The feeding mechanism includes side mounting brackets disposed on both sides of the second mounting base. A rotating shaft is provided on the outer wall of each of the two side mounting brackets on opposite sides. A motor is provided on the outer wall of one of the side mounting brackets to drive the rotating shaft to rotate. A mounting block is provided at one end of the rotating shaft. A sliding hole is provided on the inner wall of the mounting block. A sliding rod is slidably connected to the inner wall of the sliding hole. A connecting block is provided at one end of the sliding rod. A spring is sleeved on the outer wall of the sliding rod, located between the connecting block and the mounting block. A movable seat is movably connected to one side of the connecting block. Both sides of the second mounting base are fixedly mounted with... A guide rod is provided, with a sleeve block on its outer wall. A movable guide rod is provided at the bottom of the sleeve block. A movable seat is slidably connected to the outer wall of the movable guide rod. A connecting frame is fixed on the outer wall of each of the two movable seats on opposite sides. Two guide pads are provided on the top of each connecting frame. A feeding platform is provided on the top of the second mounting seat. Two guide holes are provided on both sides of the top outer wall of the feeding platform. The connecting frame is adapted to the guide holes. An outlet is provided on the side of the feeding platform near the conveyor table. A transmission mechanism is also provided on the second mounting seat. The transmission mechanism is used to keep the feeding mechanisms on both sides of the second mounting seat working synchronously.

[0006] In this solution, the motor drives the mounting block to rotate periodically, which in turn drives the slide rod to rotate periodically. During the rotation of the slide rod, the spring is periodically compressed and released between the mounting block and the connecting block. Utilizing its elastic buffering effect, the movable seat can periodically contact the cardboard as it slides on the movable guide rod. Combined with the gravity of the stacked cardboard, this allows the bottom cardboard to be pressed against the slide. Then, using static friction and the reciprocating sliding action of the sleeve along the guide rod, the bottom cardboard is pushed out towards the outlet. During this process, after the guide pad contacts and presses against the bottom cardboard, the spring remains compressed during the first half of the sleeve's slide along the guide rod, continuously and smoothly driving the bottom cardboard to detach. When the sleeve slides to the second half of its slide, the spring begins to release, thereby increasing the force on the bottom cardboard and preventing it from being pressed and stuck by the stacked cardboard on top during the second half of the ejection. This solution replaces the instantaneous huge acceleration and impact force of traditional ejector feeding, effectively providing feeding protection for the cardboard and ensuring continuous and stable feeding and ejection of the cardboard.

[0007] In a preferred embodiment, the transmission mechanism includes a transmission rod connected to the second mounting base via bearings, with first sprockets at both ends of the transmission rod and second sprockets on the outer walls of both rotating shafts, and the same chain sleeved on the outer walls of each set of first and second sprockets.

[0008] The transmission mechanism is designed to achieve synchronous rotation of the feeding mechanisms on both sides through sprocket and chain drive, ensuring coordinated movement of the connecting frames on both sides, preventing the cardboard from shifting or jamming due to uneven thrust on both sides, and improving feeding accuracy.

[0009] In a preferred embodiment, the feeding mechanism includes a feeding platform disposed on the top of the first mounting base. A sliding seat is slidably connected to the top of the feeding platform. A connecting seat is provided on one side of the feeding platform. An electric push rod is installed on one side of the connecting seat. The piston end of the electric push rod is connected to the sliding seat. Support platforms are provided on both outer walls of the first mounting base. A hydraulic rod is provided at the center of the top of each of the two support platforms. Limiting rods are provided on both sides of the top of each of the two support platforms. Connecting frames are installed on both outer walls of the feeding platform. Limiting holes are provided on both sides of the connecting frames. The limiting rods are adapted to the limiting holes. One end of the piston rod of the hydraulic rod is connected to the bottom outer wall of the connecting frame.

[0010] In the feeding mechanism, the hydraulic rod drives the connecting frame to raise and lower the feeding platform. The feeding platform can be adjusted to a suitable height. Then, the electric push rod drives the sliding seat to slide along the feeding platform, which can automatically push the stacked cardboard towards the feeding mechanism, realizing continuous and stable feeding, improving production efficiency and reducing manual intervention.

[0011] In a preferred embodiment, the auxiliary export mechanism includes an export frame disposed on the conveyor table. The bottom of the export frame is provided with an export area, which is connected to the export port. Extension frames are provided on both sides of one side of the export frame. The top inner wall of the export frame is provided with mounting holes that are evenly distributed. Roller groups that are evenly distributed are provided on the inner walls of several mounting holes. The rollers that make up the roller groups are made of rubber material.

[0012] The export area of ​​the export rack is connected to the export port. The roller group on the extension rack further guides the cardboard into the conveyor table, forming a smooth transition channel. This prevents the cardboard from tilting due to the sudden increase in elastic support during export, making the export of the cardboard smoother. It also ensures that the cardboard transported later remains centered and not tilted, which is convenient for subsequent creasing and cutting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0014] Figure 2 This is a side view of the structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0015] Figure 3 This is a schematic diagram of the feeding platform structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0016] Figure 4 This is a structural diagram of the sliding seat of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0017] Figure 5 This is a side mounting frame installation structure diagram of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0018] Figure 6 This is a schematic diagram of the outlet structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0019] Figure 7 This is a schematic diagram of the guide hole structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0020] Figure 8 For the present invention in Figure 7 A magnified structural diagram of point A in the middle.

[0021] Figure 9 This is a schematic diagram of the transmission rod installation structure of a feeding device for the production and processing of packaging paper boxes proposed in this invention.

[0022] Figure 10 For the present invention in Figure 9 A magnified structural diagram at point B in the middle.

[0023] In the diagram: 1. First mounting base; 2. Second mounting base; 3. Conveyor table; 4. Support leg; 5. Outlet frame; 6. Feeding platform; 7. Connecting seat; 8. Hydraulic rod; 9. Limiting plate; 10. Loading platform; 11. Side mounting frame; 12. Connecting frame; 13. Electric push rod; 14. Support platform; 15. Limiting rod; 16. Sliding seat; 17. Motor; 18. Roller assembly; 19. Conveyor belt; 20. Notch; 21. Transmission rod; 22. Chain; 23. Guide hole; 24. Guide pad; 25. Mounting block; 26. Slide rod; 27. Spring; 28. Connecting block; 29. ​​Guide rod; 30. Movable seat; 31. Sleeve block; 32. Connecting frame; 33. Screw hole; 34. Insertion hole; 35. Bolt; 36. Outlet. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Reference Figures 1 to 10 A feeding device for the production and processing of packaging paper boxes includes a first mounting base 1 and a second mounting base 2. The first mounting base 1 is provided with a feeding mechanism, the second mounting base 2 is provided with a feeding mechanism, and a conveyor table 3 is provided on one side of the second mounting base 2. An auxiliary discharge mechanism is provided on the conveyor table 3. The feeding mechanism includes side mounting brackets 11 disposed on both sides of the second mounting base 2. A rotating shaft is provided on the outer wall of each of the two side mounting brackets 11 on opposite sides. A motor 17 is provided on the outer wall of one side mounting bracket 11, driving the rotating shaft to rotate. A mounting block 25 is provided at one end of the rotating shaft. A sliding hole is provided on the inner wall of the mounting block 25, and a sliding rod 26 is slidably connected to the inner wall of the sliding hole. A connecting block 28 is provided at one end of the sliding rod 26, and a spring 27 is sleeved on the outer wall of the sliding rod 26, located between the connecting block 28 and the mounting block 25. A movable seat 30 is movably connected to one side of the connecting block 28. Guides are fixedly installed on both sides of the second mounting base 2. The guide rod 29 has a sleeve block 31 on its outer wall. The bottom of the sleeve block 31 has a movable guide rod. The movable seat 30 is slidably connected to the outer wall of the movable guide rod. The outer walls of the two movable seats 30 on opposite sides are fixed with connecting frames 32. The top of each connecting frame 32 is provided with two guide pads 24. The top of the second mounting seat 2 is provided with a feeding platform 6. The two sides of the top outer wall of the feeding platform 6 are provided with two guide holes 23. The connecting frame 32 is adapted to the guide holes 23. The side of the feeding platform 6 near the conveyor platform 3 is provided with an outlet 36. The second mounting seat 2 is also provided with a transmission mechanism. The transmission mechanism is used to keep the feeding mechanisms on both sides of the second mounting seat 2 working synchronously.

[0026] Specifically, the motor 17 drives the mounting block 25 to rotate periodically, which in turn drives the slide rod 26 to rotate periodically. During the rotation of the slide rod 26, the spring 27 is periodically compressed and released between the mounting block 25 and the connecting block 28. Utilizing its elastic buffering effect, the movable seat 30 can periodically contact the cardboard when sliding on the movable guide rod, and combined with the gravity of the stacked cardboard, it can press against the bottom cardboard. Then, using the static friction and the reciprocating sliding action of the sleeve block 31 along the guide rod 29, the bottom cardboard is pushed out towards the outlet 36.

[0027] During this process, after the guide pad 24 contacts and presses against the bottom cardboard, as the sleeve block 31 slides along the guide rod 29 for the first half of the journey, the spring 27 remains compressed, continuously and smoothly driving the bottom cardboard to detach. After the sleeve block 31 slides along the guide rod 29 to the second half of the journey, the spring 27 begins to release, thereby increasing the force on the bottom cardboard and preventing the bottom cardboard from being pressed and stuck by the upper stacked cardboard in the second half of the journey. This solution replaces the instantaneous huge acceleration and impact force of the traditional ejector feeding, effectively providing feeding protection for the cardboard, while also ensuring the continuous and stable feeding of the cardboard.

[0028] The top outer wall of the feeding platform 6 is equipped with four limiting plates 9 at the four corners. All four limiting plates 9 are "L" shaped structures, and the two limiting plates 9 on the side closer to the feeding mechanism are provided with notches 20. The "L" shaped limiting plates 9 position the stacked cardboard on all four sides to ensure that the cardboard is neat and does not shift. The notches 20 on the side closer to the feeding mechanism make it easier for the feeding mechanism to push the cardboard into the feeding platform 6, avoid interference, and ensure smooth feeding.

[0029] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 9 In a preferred embodiment, the transmission mechanism includes a transmission rod 21 connected to the second mounting base 2 via a bearing. Both ends of the transmission rod 21 are provided with first sprockets, and the outer walls of the two rotating shafts are provided with second sprockets. The same chain 22 is sleeved on the outer walls of each set of first sprockets and second sprockets.

[0030] Specifically, the transmission mechanism is mainly driven by sprockets and chains 22 to achieve synchronous rotation of the feeding mechanisms on both sides, ensuring that the connecting frames 32 on both sides move in a coordinated manner, avoiding paperboard shifting or jamming due to uneven thrust on both sides, and improving feeding accuracy.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the feeding mechanism includes a feeding platform 10 disposed on the top of the first mounting base 1. A sliding seat 16 is slidably connected to the top of the feeding platform 10. A connecting seat 7 is provided on one side of the feeding platform 10. An electric push rod 13 is installed on one side of the connecting seat 7. The piston end of the electric push rod 13 is connected to the sliding seat 16. Support platforms 14 are provided on both outer walls of the first mounting base 1. A hydraulic rod 8 is provided at the center of the top of each of the two support platforms 14. Limiting rods 15 are provided on both sides of the top of each of the two support platforms 14. Connecting frames 12 are installed on both outer walls of the feeding platform 10. Limiting holes are provided on both sides of the connecting frame 12. The limiting rods 15 are adapted to the limiting holes. One end of the piston rod of the hydraulic rod 8 is connected to the bottom outer wall of the connecting frame 12.

[0032] Specifically, in the feeding mechanism, the hydraulic rod 8 drives the connecting frame 12 to raise and lower the feeding platform 10. The feeding platform 10 can be adjusted to a suitable height. Then, the electric push rod 13 drives the sliding seat 16 to slide along the feeding platform 10, which can automatically push the stacked cardboard towards the feeding mechanism, realize continuous and stable feeding, improve production efficiency, and reduce manual intervention.

[0033] The limiting rod 15 and the limiting hole provide vertical guidance for the loading platform 10, preventing tilting during lifting and ensuring stable and reliable loading.

[0034] Reference Figure 1 , Figure 2 and Figure 5 In a preferred embodiment, the auxiliary export mechanism includes an export frame 5 disposed on the conveyor table 3. The bottom of the export frame 5 is provided with an export area, which is connected to the export port 36. An extension frame is provided on both sides of one side of the export frame 5. The top inner wall of the export frame 5 is provided with mounting holes that are evenly distributed. Roller groups 18 that are evenly distributed are provided on the inner walls of several mounting holes. The rollers that make up the roller groups 18 are made of rubber material.

[0035] Specifically, the export area of ​​the export frame 5 is connected to the export port 36, and the roller group 18 on the extension frame further guides the cardboard into the conveyor table 3, forming a smooth transition channel. This prevents the cardboard from tilting due to the sudden increase in elastic support during export, making the export of the cardboard smoother and ensuring that the cardboard transported subsequently remains centered and not tilted, which is convenient for subsequent creasing and cutting.

[0036] Among them, the roller assembly 18 made of rubber material makes flexible contact with the surface of the cardboard, which not only reduces frictional resistance during the export process and prevents the cardboard surface from being scratched, but also assists the cardboard in moving by rotating the rollers, thus improving the export efficiency.

[0037] Reference Figure 7 , Figure 9 and Figure 10 In a preferred embodiment, a fixing post is provided on the top outer wall of the connecting frame 32, a screw hole 33 is provided in the central area of ​​the top outer wall of the fixing post, and insertion holes 34 are symmetrically provided on both sides of the top outer wall of the fixing post. Two insertion rods are provided on the bottom outer wall of the guide pad 24, and an adapter hole is provided in the central area of ​​the guide pad 24. A bolt 35 is screwed onto the inner wall of the screw hole 33, and the bolt 35 passes through the adapter hole.

[0038] Specifically, the guide pad 24 is detachably connected to the fixed post via the insert rod and bolt 35, allowing for faster replacement when the guide pad 24 is found to be severely worn after a certain period of operation; the bolt 35, in conjunction with the insert rod and the insertion hole 34, ensures that the guide pad 24 does not loosen during operation, thus guaranteeing feeding accuracy.

[0039] The top of the guide pad 24 is covered with a rubber layer. The upper surface of the rubber layer is serrated. The serrated rubber layer increases the friction with the cardboard, preventing the cardboard from slipping during feeding. At the same time, the rubber material is elastic, which can buffer the contact pressure and protect the cardboard surface from being crushed or scratched.

[0040] Reference Figure 1 and Figure 2 In a preferred embodiment, the top of the conveyor platform 3 is provided with a conveyor belt 19, and the bottom outer wall of the conveyor platform 3 is provided with support legs 4.

[0041] Working principle: In use, the hydraulic rod 8 first drives the connecting frame 12 to raise and lower the loading platform 10 to a suitable height. Then, the electric push rod 13 drives the sliding seat 16 to push the cardboard, which is picked up by the robot arm or stacked manually, toward the feeding platform 6, where it is positioned on all four sides by the "L"-shaped limit plate 9. Next, the motor 17 is started to drive the rotating shaft and mounting block 25 to rotate periodically, which drives the sliding rod 26 and connecting block 28 to rotate synchronously. This causes the spring 27 to be periodically compressed and released between the mounting block 25 and the connecting block 28. Utilizing its elastic buffering effect, the movable seat 30 slides along the guide rod 29 and the movable guide rod. When the guide pad 24 contacts and presses against the bottom... After the cardboard is removed, the first half of the slide of the sleeve block 31 along the guide rod 29 is continuously compressed by the spring 27, which smoothly drives the bottom cardboard to detach from the paper stack. The second half of the slide of the spring 27 is released, increasing the force on the bottom cardboard to prevent it from being pressed and stuck by the upper stacked cardboard. At the same time, the transmission mechanism drives the feeding mechanisms on both sides to rotate synchronously through the transmission rod 21, sprocket and chain 22 to ensure that the cardboard is subjected to uniform force and does not deviate. The separated cardboard enters the guide frame 5 through the outlet 36. Under the flexible guidance of the rubber roller group 18 and the anti-slip protection of the serrated rubber layer, it smoothly transitions to the conveyor belt 19 of the conveyor table 3, thus completing the protective feeding and stable conveying.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A feeding device for the production and processing of packaging paper boxes, comprising a first mounting base (1) and a second mounting base (2), characterized in that, The first mounting base (1) is provided with a feeding mechanism, the second mounting base (2) is provided with a feeding mechanism, and a conveyor table (3) is provided on one side of the second mounting base (2). An auxiliary discharge mechanism is provided on the conveyor table (3). The feeding mechanism includes side mounting brackets (11) arranged on both sides of the second mounting base (2). A rotating shaft is provided on the outer wall of each of the two side mounting brackets (11) on opposite sides. A motor (17) is provided on the outer wall of one of the side mounting brackets (11). The motor (17) drives the rotating shaft to rotate. A mounting block (25) is provided at one end of the rotating shaft. A sliding hole is provided on the inner wall of the mounting block (25). A sliding rod (26) is slidably connected to the inner wall of the sliding hole. A connecting block (28) is provided at one end of the sliding rod (26). A spring (27) is sleeved on the outer wall of the sliding rod (26). The spring (27) is located between the connecting block (28) and the mounting block (25). A movable seat (30) is movably connected to one side of the connecting block (28). Both sides of the second mounting base (2) are fixedly mounted with... A guide rod (29) is provided with a sleeve block (31) on its outer wall. The bottom of the sleeve block (31) is provided with a movable guide rod. The movable seat (30) is slidably connected to the outer wall of the movable guide rod. A connecting frame (32) is fixed on the outer wall of the opposite side of the two movable seats (30). Two guide pads (24) are provided on the top of each connecting frame (32). The top of the second mounting seat (2) is provided with a feeding platform (6). Two guide holes (23) are provided on both sides of the top outer wall of the feeding platform (6). The connecting frame (32) is adapted to the guide holes (23). The feeding platform (6) is provided with an outlet (36) on the side near the conveyor platform (3). The second mounting seat (2) is also provided with a transmission mechanism. The transmission mechanism is used to keep the feeding mechanisms on both sides of the second mounting seat (2) working synchronously.

2. The feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The four corners of the top outer wall of the feeding platform (6) are provided with limiting plates (9). All four limiting plates (9) are "L" shaped structures, and the two limiting plates (9) near the feeding mechanism are provided with notches (20).

3. The feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The transmission mechanism includes a transmission rod (21) connected to the second mounting base (2) via a bearing. Both ends of the transmission rod (21) are provided with first sprockets, and the outer walls of the two rotating shafts are provided with second sprockets. The same chain (22) is sleeved on the outer walls of each set of first sprockets and second sprockets.

4. The feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The feeding mechanism includes a feeding platform (10) set on the top of the first mounting base (1), a sliding seat (16) is slidably connected to the top of the feeding platform (10), a connecting seat (7) is provided on one side of the feeding platform (10), an electric push rod (13) is installed on one side of the connecting seat (7), and the piston end of the electric push rod (13) is connected to the sliding seat (16).

5. The feeding device for producing and processing packaging paper boxes according to claim 4, characterized in that, The first mounting base (1) has a support platform (14) on both outer walls. The top center of the two support platforms (14) is provided with a hydraulic rod (8). The top two sides of the two support platforms (14) are provided with a limiting rod (15). The two outer walls of the loading platform (10) are provided with a connecting frame (12). The two sides of the connecting frame (12) are provided with a limiting hole. The limiting rod (15) is adapted to the limiting hole. One end of the piston rod of the hydraulic rod (8) is connected to the bottom outer wall of the connecting frame (12).

6. The feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The auxiliary export mechanism includes an export frame (5) set on the conveyor table (3). The bottom of the export frame (5) is provided with an export area, which is connected to the export port (36). Both sides of one side of the export frame (5) are provided with extension frames.

7. The feeding device for producing and processing packaging paper boxes according to claim 6, characterized in that, The top inner wall of the guide frame (5) is provided with mounting holes that are evenly distributed. Each of the mounting holes has roller groups (18) that are evenly distributed. The rollers that make up the roller groups (18) are made of rubber material.

8. The feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The connecting frame (32) has a fixed column on its top outer wall. The fixed column has a screw hole (33) in the center area of ​​its top outer wall. The fixed column has symmetrical insertion holes (34) on both sides of its top outer wall. The guide pad (24) has two insertion rods on its bottom outer wall. The guide pad (24) has an adapter hole in its center area. The screw hole (33) has a bolt (35) screwed into its inner wall. The bolt (35) passes through the adapter hole.

9. A feeding device for producing and processing packaging paper boxes according to claim 8, characterized in that, The top of the guide pad (24) is covered with a rubber layer, and the upper surface of the rubber layer is serrated.

10. A feeding device for producing and processing packaging paper boxes according to claim 1, characterized in that, The top of the conveyor platform (3) is provided with a conveyor belt (19), and the bottom outer wall of the conveyor platform (3) is provided with support legs (4).

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