Automatic turnover and conveying and loading machine for inner cylinder of firework

Abstract

The utility model discloses a fireworks inner tube automatic overturning conveying and filling machine, it includes inner tube cake overturning mechanism and be used for depositing the inner tube's storage hopper and with the storage hopper middle upper part intercommunication connection and be used for the inner tube blanking middle hopper, the both sides of middle hopper are provided with stand, and the lifter is movably equipped on the stand, and the lifter is linked with lifting cylinder, and the opposite blanking plate is set up on the middle hopper, and the bracket body that can support the inner tube and with the regular hexagon inner tube cake shape corresponds is linked with the translation cylinder, and the bracket body is formed by straight support plate and inclined support plate, and the horizontal synchronous inward movement of translation cylinder can make the inclined support plate close and support the inner tube cake, and the horizontal synchronous outward movement of translation cylinder can make the inclined support plate separate. The utility model not only can realize the automatic conveying of inner tube, blanking, distribution and filling, improve the inner tube filling efficiency, reduce the filling labor intensity, reduce the staff, and also can not increase the working space height, and the blanking inner tube axis can not deviate, ensure that the inner tube smoothly enters into the guide chute.

Description

Technical Field

[0001] This utility model relates to fireworks manufacturing equipment, and in particular to mechanical equipment for automatically filling inner cylinders into the outer cylinders of molded fireworks. Background Technology

[0002] Large-scale fireworks production initially relied on manual methods: first, loosening the clamps on the hexagonal inner tube cake; then, stacking the inner tube (a paper tube containing the effect powder and fuse) in the hopper of an inner tube filling machine; finally, mechanically inserting the inner tube into the launch hole of the molded outer tube of the firework to complete the inner tube filling. However, this method suffers from low inner tube filling efficiency and low production safety. To address these issues and improve inner tube filling efficiency and safety, some fireworks manufacturers now use automated filling equipment to complete the conveying, dropping, distributing, and filling of the inner tubes. Currently, the structures used for conveying, dropping, and distributing the inner tubes in automated filling equipment mostly employ clamps that match the shape of the hexagonal inner tube cake and whose two lower inclined sides supporting the inner tube can rotate and open synchronously to hold the loosened inner tube cake. The inner tube cake is then fed into the intermediate hopper by moving the clamps horizontally and vertically. To ensure the inner cylinder can quickly drop into the intermediate hopper, a sufficient working space must be provided within the intermediate hopper between the starting point of the inner cylinder's drop and the upper surface of the existing uppermost inner cylinder. This working space should not interfere with the synchronous rotation and opening of the two inclined sides at the lower end of the clamp. The height of this working space should be at least half the length of the inclined side greater than the original working space height. Due to this increased working space height, the inner cylinder's dropping height increases. When the dropping inner cylinder collides with the upper surface of an existing inner cylinder in the intermediate hopper, some inner cylinders, after landing, will not maintain parallelism with the axis of the existing inner cylinders. This lateral shift in the axis of the dropping inner cylinder will prevent some inner cylinders from smoothly entering the guide chute, thus affecting the inner cylinder filling efficiency and quality. Utility Model Content

[0003] In response to the problem in the prior art where the two hexagonal clamps supporting the inclined sides of the inner cylinder at the lower end can rotate and open synchronously, the axis of the inner cylinder will shift laterally during the material feeding process, causing some inner cylinders to fail to enter the guide chute smoothly, this utility model provides a fireworks inner cylinder automatic flipping conveyor and filling machine that can realize automatic conveying, feeding, distributing and filling of inner cylinders without increasing the height of the working space. After the feeding inner cylinder is placed, its axis can remain parallel to the axis of the existing inner cylinder in the middle hopper, and the axis of the feeding inner cylinder will not shift laterally, ensuring that the inner cylinder can smoothly enter the guide chute.

[0004] The technical solution adopted by this utility model to solve the technical problem is: an automatic flipping and conveying filling machine for fireworks inner tubes. It includes a flipping mechanism for changing the inner tube cake from horizontal to vertical, a storage hopper for storing the inner tube, and an intermediate hopper connected to the upper middle part of the storage hopper for discharging material from the inner tube. Columns are provided on both sides of the intermediate hopper. The upper ends of the columns are connected by crossbars, and the lower ends are fixed to a frame on one side of the storage hopper. A lifting rod is movably mounted on the columns. Both ends of the lifting rod are fixedly connected to a translation cylinder by hanging plates. The lifting rod is connected to a lifting cylinder located on one side of the intermediate hopper. The cylinder drives the lifting rod to descend, allowing the translation cylinder, the feeding clamp, and the inner cylinder to descend together into the intermediate hopper. The translation cylinder is connected to the left and right feeding clamps, which support the inner cylinder and correspond to the shape of the hexagonal inner cylinder cake. The translation cylinder moves horizontally and synchronously inward, allowing the inner cylinder cake from the flipping mechanism to pass through the clamp plate and enter the material cavity formed by the left and right feeding clamps. The translation cylinder moves horizontally and synchronously outward and downward, allowing the inner cylinder in the material cavity to enter the intermediate hopper. The flipping mechanism includes a rotating shaft fixed to the frame and fixed to the rotating shaft. The system includes a guide frame and symmetrically located left and right tilting clamps on either side of the guide frame, which can be halved to form a material cavity that matches the shape of the inner cylinder cake. A top cylinder, movable to match the shape of the inner cylinder cake, is installed within the guide frame. Under the action of a push-out cylinder, the top cylinder can press the inner cylinder cake into the material cavity. Guide plates are spaced apart at the bottom of the storage hopper, forming a guide groove between them that allows the inner cylinder to move in. A swaying pull column is spaced apart on the storage hopper above the guide plates, causing the surrounding inner cylinder to roll and enter the guide groove. The lower end of the guide groove is equipped with... The device includes a steering body with horizontally spaced arc-shaped guide grooves on its upper surface that are aligned with the material guide groove opening. The outer side of the steering body has vertically spaced guide grooves that are smoothly connected to the horizontal guide grooves. These vertical guide grooves are aligned with the launching holes on the molded outer cylinder located on the conveyor belt. A pusher is mounted on a guide rail on one side of the horizontal guide groove. Under the action of a pushing cylinder, the pusher can advance the inner cylinder entering the horizontal guide groove into the vertical guide groove. A pressure rod is spaced on the other side of the horizontal guide groove. Under the action of a pressure cylinder, the pressure rod can advance the inner cylinder entering the vertical guide groove into the launching hole.

[0005] To further address the issue of gaps between the inner cylinders at both ends of the storage hopper during the operation of the lifting column, which allows the inner cylinders to float up and down with the column without leaving any gaps with the arc-shaped baffle at the top of the hopper, thus preventing excessive bouncing of the inner cylinders due to gaps and potential horizontal deviation of the inner cylinder axis, which would affect their entry into the guide chute, this invention replaces the arc-shaped baffle with a retractable limiting plate made of elastic materials such as rubber or a telescopic belt. This plate maintains constant contact with the upper surface of the uppermost inner cylinder. When the inner cylinder moves upward, the limiting plate extends upward under the action of the inner cylinder; when the inner cylinder moves downward, the limiting plate retracts under elastic action, ensuring constant contact with the uppermost inner cylinder and eliminating any gaps between the uppermost inner cylinder and the arc-shaped baffle at the top of the storage hopper.

[0006] The working process of this utility model is as follows: When the upper sensor 11 receives a position signal, the inner cylinder cake conveying mechanism or the robot arm clamps and conveys the hexagonal inner cylinder cake into the material cavity formed by the left and right flipping clamping plates driven by the flipping clamping cylinder of the horizontal flipping mechanism. Then, the flipping cylinder receives a signal and starts working, driving the rotating shaft to rotate 90 degrees. Through the displacement sensor, the inner cylinder cake placed in the material cavity formed by the left and right flipping clamping plates is aligned with the clamping plate. Then, the ejection cylinder works, driving the ejector cylinder connected to the ejection cylinder to eject the inner cylinder cake (excluding the clamping clamp) and pass through the clamping plate frame into the material cavity formed by the left and right movable discharge left and right clamping plates. When the lower sensor 12 receives a position signal, the inner cylinder cake (excluding the clamping clamp) is ejected and passes through the clamping plate frame into the material cavity formed by the left and right movable discharge left and right clamping plates. Upon receiving the signal, the lifting cylinder descends, driving the left and right feeding clamps, along with the translation cylinders that drive the left and right feeding clamps, to descend synchronously. Simultaneously, the translation cylinders operate, causing the left and right feeding clamps to open outwards, and the inner cylinder quickly falls into the intermediate hopper 41. After the lower position sensor receives the signal, the inner cylinder in the intermediate hopper descends along the pulling column. When the inner cylinder descends into the guide groove and is placed in the horizontal guide groove on the steering body, the pushing cylinder operates, driving the pusher to simultaneously move the inner cylinder placed in the horizontal guide groove into the vertical guide groove that is smoothly connected to the horizontal guide groove. After the inner cylinder enters the vertical guide groove, the compaction cylinder operates, driving the compaction rod to press the inner cylinder into the firing hole of the molded outer cylinder, completing the filling of the inner cylinder.

[0007] This invention is based on the existing inner cylinder filling machine. Firstly, a hexagonal inner cylinder cake is conveyed to the material cavity formed by the left and right tilting clamps on a tilting mechanism using a conveying device (or robotic arm) equipped with clamps and capable of horizontal and downward movement. The tilting mechanism rotates 90 degrees to change the inner cylinder cake from a horizontal to a vertical position, and then the inner cylinder cake is pressed into the material cavity formed by the left and right movable discharge clamps through the clamping plate using a pressure cylinder. Secondly, by improving the frame structure supporting the inner cylinder, the left and right discharge clamps supporting the inner cylinder open horizontally and synchronously, allowing the inner cylinder to fall into the intermediate hopper. Since the clamps move horizontally and simultaneously, the entire inner cylinder can be discharged, thus eliminating the need to increase the working space height between the inner cylinder discharge point and the upper surface of the inner cylinder already in the intermediate hopper. When the upper surfaces of the inner cylinders collide, the axis of the inner cylinder after material is discharged can remain basically parallel to the axis of the existing inner cylinder in the middle hopper. The axis of the discharged inner cylinder will not shift laterally. Especially when the inner cylinder diameter is small, it can smoothly enter the guide trough. Furthermore, by replacing the arc baffle on the storage hopper with a retractable limiting plate made of elastic materials such as rubber or telescopic belts, it can always stay close to the inner cylinder. When the inner cylinder moves upward, the limiting plate extends upward under the action of the inner cylinder. When the inner cylinder moves downward, the limiting plate retracts under the action of elasticity. Thus, it can always stay close to the uppermost inner cylinder, so that there is no gap between the uppermost inner cylinder and the arc baffle at the top of the storage hopper. This effectively solves the problem of large jumping caused by gaps when the inner cylinder moves up and down in the storage hopper, and the horizontal deviation of the inner cylinder axis, which affects the inner cylinder's entry into the guide trough.

[0008] This invention can not only realize automatic conveying, unloading, sorting and filling of the inner cylinder, improve the filling efficiency of the inner cylinder, reduce the labor intensity of filling and reduce the number of workers, but also does not increase the height of the unloading working space. After the unloading inner cylinder is placed, its axis can remain parallel to the existing inner cylinder axis in the intermediate hopper, and the unloading inner cylinder axis will not be laterally offset, ensuring that the inner cylinder smoothly enters the guide chute. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model after the flipping mechanism has been removed. Figure 2 yes Figure 1 A cross-sectional view of the EE structure after it is equipped with a flipping mechanism. Figure 3 yes Figure 2 A schematic diagram of the structure in direction A. Figure 4 yes Figure 2 CC cross-sectional structural diagram, Figure 5 yes Figure 2 A schematic diagram of the B-direction structure. Figure 6 yes Figure 5 A schematic diagram of the D-direction structure.

[0010] In the diagram: 1. Inner cylinder cake; 2. Guide frame; 3. Crank block; 4. Ejection cylinder; 5. Ejection cylinder; 6. Left discharge clamping plate; 7. Limiting buffer block; 8. Tilting clamping cylinder; 9. Tilting left clamping plate; 10. Tilting right clamping plate; 11. Upper sensor; 12. Lower sensor; 13. Limiting plate; 14. Right discharge clamping plate; 15. Storage hopper; 16. Crossbar; 17. Clamping plate; 18. Upper arm plate; 19. Hanging plate; 20. Translation cylinder; 21. Piston rod I 22. Column; 23. Swing plate; 24. Push plate; 25. Swing rod; 26. Pulling column; 27. Guide plate; 28. Guide groove; 29. ​​Pressing rod; 30. Horizontal guide groove; 31. Frame; 32. Molding outer cylinder limiting plate; 33. Conveyor belt; 34. Lifting rod; 35. Molding outer cylinder; 36. Servo motor; 37. Crank rod; 38. Lower support plate; 39. Upper support plate; 40. Pressing cylinder; 41. Intermediate hopper; 42. Transparent glass plate; 43. Suspension plate; 44. Guide plate; 45. Piston rod II; 46. Lifting cylinder; 47. Platform; 48. Push rod; 49. Piston rod III; 50. Pushing cylinder; 51. Push head; 52. Vertical guide groove; 53. Launching hole; 54. Guide rail; 55. Moving plate; 56. Tilting cylinder; 57. Rotating shaft; 58. Drive connecting rod; 59. Pin shaft; 60. Clamp; 61. Bearing seat; 62. Inner cylinder. Detailed Implementation

[0011] exist Figures 1-6The automatic rotating conveyor and filling machine for fireworks inner tubes includes a rotating mechanism for changing the inner tube cake 1 from horizontal to vertical; a storage hopper 15 for storing the inner tube; and an intermediate hopper 41 connected to the upper middle part of the storage hopper for discharging material from the inner tube. The rotating mechanism includes a rotating shaft 57 fixed on the frame, a guide frame 2 fixed on the rotating shaft, and a rotating left clamping plate 9 and a rotating right clamping plate 10 symmetrically located on both sides of the guide frame, which can be halved to form a material cavity matching the shape of the inner tube cake. The rotating left clamping plate 9 and the rotating right clamping plate 10 are semi-hexagonal. A top cylinder 5 is provided inside the guide frame to movably match the shape of the inner tube cake. The top cylinder can press the inner tube cake into the material cavity under the action of the ejection cylinder 4. The two ends of the rotating shaft are fixed to the platform 47 by bearing seats 61, and the middle of the rotating shaft is fixedly connected to the guide frame. The rotating left clamping plate 9 and the rotating right clamping plate 10 are both semi-square and located on both sides of the guide frame. Each shaft is connected to a tilting clamping cylinder 8. Both ends of the rotating shaft are movably connected to one end of a crank block 3, and the other end of the crank block is movably connected to one end of a drive connecting rod 58. The other end of the drive connecting rod is movably connected to one end of a pin 59, and the other end of the pin is fixedly connected to a moving plate 55. A push plate 24 is fixedly mounted on the moving plate, and the push plate is connected to the piston rod on the tilting cylinder 56 fixed on the platform. When the tilting cylinder operates, it drives the moving plate 55 and the pin 59 to move back and forth along the guide rail 54, causing the drive connecting rod and... The crank block linkage drives the rotating shaft and the guide frame on it to rotate 90 degrees synchronously, making the guide frame vertical. After rotation, the hexagonal slot on the guide frame is opposite to the regular hexagonal material cavity formed by the closing of the left flipping clamp 9 and the right flipping clamp 10. Then the ejection cylinder is activated, and the ejection cylinder pushes the inner cylinder cake through the pressure cylinder 5 through the clamp plate into the material cavity formed by the left and right moving material discharge clamp 9 and the right material discharge clamp 10. Then the ejection cylinder exits and takes out the clamp 60 that tightly wraps the inner cylinder cake.The lower part of the storage hopper is provided with guide plates 27 at intervals, and a guide groove 28 is formed between the guide plates 27 to allow the inner cylinder to move in. On the storage hopper at the upper end of the guide plates, there are swaying push columns 26 at intervals, which can move the surrounding inner cylinders and allow them to enter the guide groove. One end of the push column is connected to an upper arm plate 18, and one end of the upper arm plate is connected to a swing plate 23 via a swing rod 25. The swing plate is connected to a servo motor 36 via a crank rod 37. A steering body is provided at the lower end of the guide groove. The upper surface of the steering body has horizontal guide grooves 30 with an arc-shaped cross-section, which are opposite to the opening of the guide groove (the inner cylinder can be movably placed in the horizontal guide groove). The outer side of the steering body has a vertical guide groove 52 with an arc-shaped cross-section that is smoothly connected to the horizontal guide groove. The vertical guide groove is located at the transmission... The firing holes 53 on the molded outer cylinder 35 on the conveyor belt are aligned. The inner cylinder filling machine can fill the inner cylinder into all the firing holes in the same row on one or more molded outer cylinders (in this embodiment, three molded outer cylinders are filled in parallel) at one time. Since there are multiple rows of firing holes on one molded outer cylinder, multiple filling machines can be arranged side by side at intervals and the molded outer cylinders can be moved horizontally to the bottom of each filling machine multiple times to complete the filling of all the inner cylinders on the three molded outer cylinders. Alternatively, the filling of all the inner cylinders on the three molded outer cylinders can be completed by moving the three molded outer cylinders back and forth multiple times under the bottom of one filling machine. The molded outer cylinder 35 is input by the conveyor belt 33 supported by the rollers. The two ends of the conveyor belt are the driving roller and the driven roller. The molded outer cylinder is positioned on the left and right of the conveyor belt by the molded outer cylinder limiting plate 32 driven by the cylinder.An L-shaped pusher head 51 is installed on the guide rail on one side of the horizontal guide groove. Under the action of the push rod 48 connected to the piston rod Ⅲ49 on the pusher cylinder 50, the pusher head can push the inner cylinder that has entered the horizontal guide groove 30 into the vertical guide groove 52. On the other side of the horizontal guide groove, there are pressure rods 29 connected to the pressure cylinder 40 at intervals. The pressure cylinder is fixed on the upper support plate 39. The upper end of the pressure rod is connected to the lower support plate 38. The lower arm plate is connected to the pressure cylinder 40. The number and distribution of the pressure rods are parallel to the three molded outer cylinders. The number and position of the launching holes in the same row correspond. Under the action of the pressing cylinder 40, the pressing rod can push the inner cylinder 62 that has entered the vertical guide groove into the launching hole 35. The middle hopper is provided with columns 22 on both sides. The upper end of the column is connected by a crossbar 16, and the lower end of the column is fixed to the frame 31 at one end of the storage hopper through the base 24. The column is movably provided with a lifting rod 34. The upper end of the column is connected by a crossbar 16, and the two ends of the lifting rod are fixedly connected to the translation cylinder 20 by the hanging plate 19. The lifting rod is connected to the piston rod II 45. Connected to a lifting cylinder 46 located on one side of the intermediate hopper, the lifting cylinder drives the lifting rod to descend, allowing the translation cylinder, bracket, and inner cylinder cake to descend together into the intermediate hopper. The piston rod I21 of the translation cylinder 20, passing through the guide plate 44, is fixedly equipped with a left and right feeding clamping plate 6 and a right feeding clamping plate 14 that support the inner cylinder and correspond to the shape of the hexagonal inner cylinder cake. Both the left and right feeding clamping plates are semi-hexagonal. The guide plate is fixed to the suspension plate 43, and the upper end of the suspension plate is fixed to the lifting rod 34. The horizontally synchronized inward movement of the translation cylinder clamps the inner cylinder cake 1, which is conveyed by the flipping mechanism and enters the material chamber after passing through the clamping plate 17. Simultaneously, the horizontally synchronized outward movement of the translation cylinder separates the left and right discharge clamping plates, allowing the inner cylinder cake to fall downwards into the intermediate hopper. The upper end of the clamping plate is fixed to the lifting rod 34, and the lower end is fixed to the intermediate hopper 41. The front end of the intermediate hopper is a transparent glass plate 42. The lower end of the clamping plate has a cavity with the same shape as the inner cylinder cake, through which the inner cylinder cake can move. A limiting buffer block 7 (made of rubber or resin) is fixed to the upper end of the clamping plate. Its function is to ensure that the guide frame on the flipping mechanism is vertical when the flipping mechanism rotates to a vertical position (to buffer and reduce rotational inertia). The lifting cylinder drives the lifting rod to descend, which allows the translation cylinder, the left and right feeding clamps, and the inner cylinder to descend together into the intermediate hopper. The translation cylinder is connected to the left and right feeding clamps that support the inner cylinder and correspond to the shape of the hexagonal inner cylinder cake. The translation cylinder moves horizontally and synchronously inward, allowing the inner cylinder cake, which is fed by the flipping mechanism, to pass through the clamping plate and enter the material cavity formed by the left and right feeding clamps. The translation cylinder moves horizontally and synchronously outward and downward, allowing the inner cylinder in the material cavity to enter the intermediate hopper.

[0012] This utility model designs the arc-shaped baffles at the upper part of both ends of the storage hopper as limiting plates 13. The limiting plates at the upper part of both ends of the storage hopper are made of elastic materials such as rubber and elastic bands. The limiting plates can always be close to the upper surface of the uppermost inner cylinder. When the inner cylinder moves upward, the limiting plates extend upward under the action of the inner cylinder. When the inner cylinder moves downward, the limiting plates retract under the action of elasticity, so that they can always be close to the uppermost inner cylinder, so that there is no gap between the uppermost inner cylinder and the arc-shaped baffles at the top of the storage hopper.

[0013] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any aspects not mentioned, such as PLC control, limit switches and displacement sensors in the automatic control device, are existing technologies. Although this utility model has been described in detail with reference to specific embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of protection of the claims of this utility model.

Claims

1. An automatic flipping and conveying filling machine for fireworks inner tubes, comprising a flipping mechanism for changing the inner tube cake from horizontal to vertical, a storage hopper (15) for storing the inner tube, and an intermediate hopper (41) connected to the upper middle part of the storage hopper for discharging the inner tube. Columns (22) are provided on both sides of the intermediate hopper. The upper ends of the columns are connected by crossbars (16), and the lower ends are fixed to a frame (31) on one side of the storage hopper. A lifting rod (34) is movably provided on the column. Both ends of the lifting rod are fixedly connected to a translation cylinder (20) by hanging plates (19). The lifting rod is connected to the intermediate hopper. A lifting cylinder (46) is connected to one side of the hopper. The lifting cylinder drives the lifting rod to descend, which allows the translation cylinder, the feeding clamp, and the inner cylinder to descend together into the intermediate hopper. The translation cylinder is connected to the feeding left clamp (6) and the feeding right clamp (14) that support the inner cylinder and correspond to the shape of the hexagonal inner cylinder cake (1). The translation cylinder moves horizontally and synchronously inward, which allows the inner cylinder cake sent by the flipping mechanism to enter the material cavity formed by the feeding left clamp and the feeding right clamp. The translation cylinder moves horizontally and synchronously outward, which allows the inner cylinder in the material cavity to enter the intermediate hopper. Its characteristics are: The flipping mechanism includes a rotating shaft (57) fixed on the frame, a guide frame (2) fixed on the shaft, and a left flipping clamp (9) and a right flipping clamp (10) symmetrically located on both sides of the guide frame and capable of forming a material cavity that matches the shape of the inner cylinder cake. A top cylinder (5) is provided inside the guide frame to move and match the shape of the inner cylinder cake. Under the action of the ejection cylinder (4), the top cylinder can press the inner cylinder cake into the material cavity formed by the left and right feeding clamps. Guide plates (27) are spaced apart at the bottom of the storage hopper, and a guide groove (28) is formed between the guide plates to allow the inner cylinder to move in. A swaying column (26) is spaced apart on the storage hopper at the top of the guide plates. The swaying column can cause the surrounding inner cylinder to move. The inner cylinder rolls into the guide groove. The guide groove is provided with a steering body at the lower end. The upper surface of the steering body is provided with arc-shaped horizontal guide grooves (30) that are opposite to the opening of the guide groove. The outer side of the steering body is provided with a vertical guide groove (52) that is smoothly connected to the horizontal guide groove. The vertical guide groove is aligned with the firing hole (53) on the molded outer cylinder (35) located on the conveyor belt (33). A pusher (51) is provided on the guide rail on one side of the horizontal guide groove. Under the action of the pusher cylinder (50), the pusher can push the inner cylinder that has entered the horizontal guide groove into the vertical guide groove. A pressure rod (29) is provided on the other side of the horizontal guide groove. Under the action of the pressure rod cylinder, the pressure rod can push the inner cylinder that has entered the vertical guide groove into the firing hole (53).

2. The automatic flipping conveyor and filling machine for fireworks inner tubes according to claim 1, characterized in that: The upper limit plates (56) at both ends of the storage hopper (15) are made of rubber and elastic material, and the limit plates can always be close to the upper surface of the uppermost inner cylinder.

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