Firework inner cylinder filling method and filling mechanism

Abstract

The invention discloses a firework inner cylinder filling method, which comprises the following steps of: respectively adding inner cylinders with different effects into stock bins with corresponding numbers, connecting the stock bins with negative pressure conveying pipes, arranging an inner cylinder effect arranging machine on the negative pressure conveying pipe close to one end of the stock bins, and arranging the inner cylinder effect arranging machine on the stock bins after one-time charging of the stock bins. The arrangement sequence of the inner barrels with different effects is set on the touch screen according to requirements, the inner barrel effect arrangement machine is controlled through the PLC, the inner barrel effect arrangement machine rotates by different angles clockwise or anticlockwise at intervals, the inner barrels in the stock bin are made to meet the set different effect sequence requirements under the negative pressure effect, man-machine separation can be achieved, and inner barrel filling production is safe; the nitrate powder and the inner barrels are conveyed in a negative pressure conveying pipe sealing relation mode through belt open or semi-open conveying, the inner barrels and the nitrate powder do not make contact with the outside, potential safety hazards are eliminated, the inner barrels can be arranged by an automatic arranging mechanism according to a set program, and the sequence is set by an operator; different effects can be replaced simply and quickly only by changing a set program.

Description

Technical Field

[0001] This invention relates to a fireworks production method and production mechanism, and more particularly to a fireworks inner tube filling method and filling mechanism. Background Technology

[0002] Currently, most fireworks production is carried out on mechanized production lines. Inner tubes containing bright beads and explosive charge are filled according to their desired effect (color of ignition) between the gunpowder and sealing paper in the firing holes of the molded outer tube, or between the gunpowder and sealing paper in the paper outer tube of the firework pellet. The inner tube filling process on these production lines typically involves several parallel hoppers feeding different effect inner tubes sequentially or simultaneously into the molded outer tube or firework pellet paper. These inner tubes are then pressed sequentially or in multiples into the firing holes of the molded outer tube or the paper outer tube of the firework pellet. While this method improves filling efficiency, it still has the following problems: First, from the time the inner tubes are added to the hoppers until they are completely used up, the arrangement of the hoppers is fixed, meaning that the filling is done uniformly each time. The inner cylinder effect in each hopper after material is fixed, and the inner cylinder effect sequence output from the hopper is arranged from left (right) to right (left). After the inner cylinder is added to the hopper, the inner cylinder effect sequence cannot be adjusted arbitrarily on the production line before the inner cylinder is completely used up. If the inner cylinder effect sequence needs to be adjusted in the middle, the machine must be stopped and the inner cylinder in the hopper whose inner cylinder effect sequence needs to be changed must be cleaned and replaced manually, and then the inner cylinder effect to be changed must be added to the hopper. This not only reduces the inner cylinder filling efficiency, but also makes inner cylinder replacement labor-intensive and costly. The inner cylinder effect adjustment has low variability and poor flexibility. Secondly, in the existing technology, the inner cylinder and nitrogen are mostly transported by open or semi-open belts without closure. Since the inner cylinder and nitrogen are in contact with the outside, there are safety hazards, and safe production cannot be truly guaranteed. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention proposes a simple and quick method and mechanism for filling fireworks inner tubes, which enables separation of man and machine, ensures safe inner tube filling, and allows the inner tubes to be automatically arranged by an automatic arranging mechanism according to a set program, with the order set by the operator. When changing to different effects, only the setting program needs to be changed.

[0004] The firework inner tube filling method of the present invention is as follows: inner tubes with different effects are added to corresponding numbered hoppers. The hoppers are connected to negative pressure conveying pipes. An inner tube effect arranging machine is set on the negative pressure conveying pipe near one end of the hopper. After the hopper is filled once, the sequence of inner tubes with different effects is set on the touch screen according to the requirements. The inner tube effect arranging machine is controlled by PLC to rotate clockwise or counterclockwise at different angles at intervals. Under the action of negative pressure, the inner tubes in the hopper are discharged from the corresponding numbered hoppers in series according to the set sequence of different effect inner tubes. Then, the inner tubes are turned, moved and dropped, and sequentially fed into the firing holes on the molded outer tube or the paper outer tube.

[0005] The fireworks inner tube filling mechanism of this invention includes an outer tube input belt, an outer tube output belt, and an intermediate conveyor belt arranged in parallel between the outer tube input belt and the outer tube output belt. A nitrifying mechanism and a paper pressing mechanism are arranged on one side of the intermediate conveyor belt, and an inner tube conveying mechanism is arranged on the other side of the intermediate conveyor belt. The nitrifying mechanism is connected to the nitrifying material silo through a nitrifying negative pressure conveying pipe. The inner tube conveying mechanism includes an inner tube silo, an intermediate negative pressure conveying pipe, an output negative pressure conveying pipe, and an inner tube effect arranging machine. One end of the inner tube silo is connected to the inner tube effect arranging machine through the intermediate negative pressure conveying pipe, and the other end of the inner tube effect arranging machine is connected to the output negative pressure conveying pipe. A turntable that can change the direction of the inner tube coming out of the output negative pressure conveying pipe is provided at one end of the output negative pressure conveying pipe. A moving platform that pushes the inner tubes onto the intermediate conveyor belt in series and a pusher plate that sequentially sends the inner tubes into the firing holes of the molded outer tube are also provided.

[0006] This invention makes the following major technological innovations to the existing fireworks inner tube filling production technology:

[0007] The existing traditional method of filling inner tubes in fireworks production lines has the following problems: Fireworks can only be produced by adding inner tubes of different effects sequentially to the hopper according to a pre-set order of inner tube effects. Furthermore, the order of inner tube effects cannot be adjusted during production until all inner tubes are used. If the pre-set order needs to be adjusted after each addition, it can only be done by swapping inner tubes during the next hopper refill. The technical innovation of this invention lies in proposing a method that not only achieves separation of manpower and machine operation, ensuring safe inner tube filling, but also allows for automatic arrangement of inner tubes according to a pre-set program, with the order set by the operator. Changing to different effects only requires modifying the program settings, making it a simple and quick method for filling fireworks inner tubes. This technological innovation breaks away from the traditional filling method that has been used in existing technologies, solves the problems existing in the traditional inner cylinder filling method, and achieves unexpected technical results.

[0008] Furthermore, the present invention uses a belt conveyor design for open or semi-open conveying of the nitrate and inner cylinder, which is a negative pressure conveying pipe with a sealed connection. The inner cylinder and nitrate do not come into contact with the outside world, eliminating safety hazards and greatly improving the safety of fireworks production.

[0009] Compared with the prior art, the present invention has the following characteristics:

[0010] 1. The production of combination fireworks includes a raw material area and a loading area, which are separated by explosion-proof walls.

[0011] 2. Raw materials are transported to the filling station via pipelines. An explosion-proof wall is installed between the two areas, with only pipeline connections, ensuring the safety of operators.

[0012] 3. The raw material transportation method is intermittent, following the principle of "small quantities, multiple times", which improves the safety of production.

[0013] 4. The loading area operates automatically without the need for human intervention, achieving separation of human and machine operations.

[0014] 5. The inner cylinder is arranged by an automatic arranging mechanism according to a set program, and the order is set by the operator; when changing to different effects, simply change the setting program, which is simple and quick.

[0015] 6. Single-shot loading, visual recognition positioning, adaptable to different product models, enabling flexible production.

[0016] 7. The loading of the nitrate, the paper plug, and the filling of the inner cylinder are all completed at the same station, which takes up little space and saves money.

[0017] In addition to the five different effects of inner cylinder filling listed in the specific embodiments, the filling method and filling mechanism described in this invention are also applicable to filling three, four or more different effects of inner cylinders. Similarly, in addition to the 10×10 molded outer cylinders listed in the specific embodiments, this invention is also applicable to filling inner cylinders of other specifications (such as 8×8, 10×8, 12×10, etc.) of molded outer cylinders or hexagonal disc outer cylinders. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of the present invention (a production line process layout diagram of the present invention).

[0019] Figure 2 This is a magnified view of the part where the cylinder is loaded.

[0020] Figure 3 yes Figure 2 A schematic diagram of the AA section structure.

[0021] Figure 4 This is a diagram showing the arrangement sequence of the inner cylinder for three different effects.

[0022] Figure 5 This is a schematic diagram of the working principle of the inner cylinder effect arrangement machine.

[0023] In the diagram: 1. Inner cylinder effect a. hopper; 2. Inner cylinder effect b. hopper; 3. Inner cylinder effect c. hopper; 4. Inner cylinder effect d. hopper; 5. Effect e. hopper; 6. Inner cylinder effect arranging machine; 7. Output negative pressure conveying pipe; 8. Intermediate negative pressure conveying pipe; 9. Pushing cylinder; 10. Turntable; 11. Moving platform; 12. Translation cylinder; 13. Push plate; 14. Compacting cylinder; 15. Frame; 16. Molding outer cylinder; 17. Paper sheet conveyor belt; 18. Paper sheet hopper; 19. Outer cylinder input belt; 20. Ejection hole; 21. Inner cylinder effect raw material area; 22. Isolation wall; 23. Nitrogen hopper; 24. Nitrogen negative pressure conveying pipe; 25. Intermediate conveyor belt; 26. Nitrogen filling machine; 27. Paper sheet inserting machine; 28. 29. Guide rail, 30. Outer cylinder output belt, 31. Push cylinder cylinder, 32. Molded outer cylinder area, 33. Compacting rod, 34. Groove, 35. Push cylinder plate, 36. Piston a, Red effect inner cylinder b, Green effect inner cylinder c, Red effect inner cylinder d, Blue effect inner cylinder e, Purple effect inner cylinder e, Yellow effect inner cylinder. Detailed Implementation

[0024] The specific content of the fireworks inner tube filling method of the present invention is as follows: five inner tubes with different effects (red effect inner tube a, green effect inner tube b, blue effect inner tube c, purple effect inner tube d, and yellow effect inner tube e) are respectively added to corresponding numbered and circularly distributed hoppers (inner tube effect a hopper 1, inner tube effect b hopper 2, inner tube effect c hopper 3, and inner tube effect d hopper 4). In the inner cylinder effect hopper 5), an inner cylinder effect arranging machine 6 is installed at the lower end of the hopper. The inner cylinder effect arranging machine includes a rotatable plunger 35. A middle negative pressure conveying pipe 8 is fixed on the plunger's axial section, which is formed by a section of inclined through hole and a straight section of through hole located on the plunger's axis. One end of the negative pressure conveying pipe 8 (inclined through hole) extends out of the plunger and can connect with the outlets of the five hoppers respectively when the plunger rotates. The other end of the middle negative pressure conveying pipe 8 (straight through hole) connects with the output negative pressure conveying pipe 7. After the hopper is filled once, the inner cylinder arranging machine is controlled by a computer (PLC) according to different effect sequences set on the touch screen according to production and market requirements. This causes the inner cylinder effect arranging machine to rotate clockwise or counterclockwise at different angles at intervals. The cylinder effect arranging machine connects the hopper to the output negative pressure conveying pipe 7, so that the inner cylinders, under negative pressure, are sequentially discharged from the corresponding numbered hoppers in series according to the different effect sequences set on the touch screen, and exit from the other end of the output negative pressure conveying pipe 7. At the other end of the output negative pressure conveying pipe, there is a motor-driven turntable 10 that can rotate the inner cylinders exiting the output negative pressure conveying pipe 90 degrees, a moving platform 11 that pushes the inner cylinders onto the intermediate conveyor belt in series, and a pusher plate 34 that sequentially delivers the inner cylinders into the firing holes 20 of the molded outer cylinders. The moving platform is driven by a motor and moves on a guide rail 28, which is fixed to the frame 15. The pusher plate is driven by a pusher cylinder 30, which is fixed to the moving platform.

[0025] In other words, this invention can rotate the inner cylinder effect arranging machine clockwise or counterclockwise at different angles to arrange the red effect inner cylinder a, green effect inner cylinder b, blue effect inner cylinder c, purple effect inner cylinder d, and yellow effect inner cylinder e, which are arranged in series from the central negative pressure conveying pipe 7, in the following order (e.g., ...). Figure 4(As shown in -X) After each inner cylinder feeding is completed and before all the inner cylinders in the hopper are used up, the order of five different effects can be adjusted online via touch screen without stopping the machine. For example, the plunger 35 in the inner cylinder effect arranging machine rotates 144 degrees counterclockwise from the red inner cylinder effect a under the action of the servo motor, so that it can connect with the inner cylinder effect c corresponding to the blue inner cylinder effect c in the hopper 3. The blue inner cylinder effect c enters the output negative pressure conveying pipe I7 through the intermediate negative pressure conveying pipe II8 on the arranging machine under negative pressure (the negative pressure value is determined according to the inner cylinder output speed requirement; the faster the output speed, the greater the negative pressure, and vice versa). Thus, the original arrangement order: red inner cylinder a, green inner cylinder b, blue inner cylinder c, purple inner cylinder d, and yellow inner cylinder e can be adjusted to: red inner cylinder a, blue inner cylinder c, green inner cylinder b, purple inner cylinder d, and yellow inner cylinder e (as shown in X). Figure 4 -Y (as shown). Similarly, or if rotating 144 degrees clockwise from the red inner cylinder, it can connect with the inner cylinder effect d hopper 4 corresponding to the purple inner cylinder effect. The purple effect e inner cylinder enters the output negative pressure conveying pipe through the inner cylinder effect arranging machine, thereby adjusting the inner cylinder arrangement sequence from red inner cylinder effect a, green inner cylinder effect b, blue inner cylinder effect, purple inner cylinder d, and yellow inner cylinder effect e to: red effect inner cylinder a, purple effect inner cylinder e, yellow effect inner cylinder c, blue effect inner cylinder c, green effect inner cylinder b (as shown). Figure 4 (As shown in -Z). Following the above method, the arrangement order of five different effect inner cylinders can be arbitrarily set on the touchscreen. By using the order set on the touchscreen, the PLC controls the servo motor to drive the plunger in the arranging machine to rotate clockwise or counterclockwise by different angles. This allows any set of different effects to be output sequentially from the output negative pressure conveying pipe. Therefore, by rotating the inner cylinder effect arranging machine in both directions, the arrangement order of different effect inner cylinders can be changed quickly and accurately online. This solves the problem in existing technologies where, due to production needs, adjusting the inner cylinder effect arrangement order online requires waiting until all the inner cylinders in the hoppers are used up before the inner cylinder effect order can be adjusted, and the inner cylinder effect order cannot be adjusted before all the inner cylinders in the hoppers are used up.

[0026] In the figure, the fireworks inner tube filling mechanism of the present invention includes an outer tube input belt 19, an outer tube output belt 29 and three parallel intermediate conveyor belts 25 arranged between the outer tube input belt and the outer tube output belt with a partition wall 22. The inner tube effect material area 21 is located inside the partition wall 22. A nitric acid filling machine 26 and a paper feeding machine 27 are arranged on one side of the intermediate conveyor belt. The nitric acid filling machine is connected to the nitric acid silo 23 by a nitric acid negative pressure conveying pipe 24. The paper feeding machine is connected to the paper silo 18 through a paper feeding conveyor belt 17. Nitric acid is first filled into the molded outer tube, then paper is pressed in, and then the inner tube is added. An inner cylinder conveying mechanism is provided on the other side of the intermediate conveyor belt. The inner cylinder conveying mechanism includes an output negative pressure conveying pipe 7 and an inner cylinder effect arranging machine 6 connected to one end of the output negative pressure conveying pipe 7. During rotation, the inner cylinder effect arranging machine can successively connect with five inner cylinder hoppers (inner cylinder effect a hopper 1, inner cylinder effect b hopper 2, inner cylinder effect c hopper 3, and inner cylinder effect d hopper 4) through the intermediate negative pressure output pipe 8. The inner cylinder effect e hopper 5) is connected by rotating at different angles. At the other end of the output negative pressure output pipe 7, there is a turntable 10 that can change the direction of the inner cylinder coming out of the negative pressure output pipe (from longitudinal to horizontal rotation 90 degrees). Then, the piston rod of the push cylinder 9 pushes the red effect inner cylinder a into the groove 33 on the moving platform 28. The moving platform moves from right to left under the action of the motor and the guide rail 28. When the moving platform moves to the left side of the first emission hole 20 of the first row (front row) of the molded outer cylinder 16 and stops moving, the push cylinder cylinder 30, which moves synchronously with the moving platform 11, drives the push cylinder plate 34 to push the inner cylinder into the first emission hole 20 of the left side of the first row (front row) of the molded outer cylinder 16. The compaction cylinder 14 works and drives a compaction rod 32 to press the inner cylinder into place (or after filling a row of ten inner cylinders, use ten compaction rods to press the ten inner cylinders into place simultaneously). This process involves sequentially feeding the first group of five types of inner cylinders into the first five firing holes of the first row of the molded outer cylinder. Then, the same procedure is repeated to feed the second group of five types of inner cylinders into the sixth to tenth firing holes of the first row of the molded outer cylinder. After the first row of ten inner cylinders is filled, the molded outer cylinder moves forward one firing hole position via the intermediate conveyor belt 25, positioning the second row of the molded outer cylinder at the inner cylinder filling position. The same procedure is then repeated to complete the filling of the second row of inner cylinders. This process continues until the last row of firing holes in one molded outer cylinder is filled. Once all the inner cylinders in one molded outer cylinder are filled, the translation cylinder 12 operates, driving the push plate 13 to move the molded outer cylinder forward to the inner cylinder filling position. The same method is then used to complete the inner cylinder filling of the second molded outer cylinder.

Claims

1. A method of filling an inner tube of a firework, characterized by: Different effect inner tubes are added to corresponding numbered hoppers, the hoppers are connected with negative pressure conveying pipes, an inner tube effect arranging machine is arranged on the negative pressure conveying pipe near one end of the hopper, after one-time feeding of the hopper, different effect inner tube arranging sequences are set on the touch screen according to requirements, the inner tube effect arranging machine is controlled by the PLC, the inner tube effect arranging machine rotates different angles at intervals in forward or reverse time, the inner tubes in the hopper are sequentially discharged from the other end of the negative pressure conveying pipe in series according to the set different effect sequence requirements under the action of negative pressure, and then the inner tubes are sequentially input into the launching holes of the mold outer tube or the paper outer tube through turning of the inner tubes, moving of the inner tubes and discharging.

2. A firework inner tube filling mechanism, which comprises an outer tube input belt (19), an outer tube output belt (29) and an intermediate conveying belt (25) arranged in parallel between the outer tube input belt and the outer tube output belt, a nitro charging mechanism (26) and a paper sheet pressing mechanism (27) are arranged on one side of the intermediate conveying belt, an inner tube conveying mechanism is arranged on the other side of the intermediate conveying belt, the nitro charging mechanism is connected with a nitro hopper (23) through a nitro negative pressure conveying pipe (24), the inner tube conveying mechanism comprises an inner tube negative pressure conveying pipe (7), an inner tube effect arranging machine (6) connected with one end of the inner tube negative pressure conveying pipe, the inner tube effect arranging machine is connected with an inner tube hopper through the other end of the negative pressure conveying pipe, a rotating disc (10) capable of changing the direction of the inner tubes coming out of the negative pressure conveying pipe is arranged on the other end of the inner tube negative pressure conveying pipe, a moving platform (11) capable of pushing the inner tubes in series into the intermediate conveying belt and a pushing tube plate (34) capable of sequentially feeding the inner tubes into the launching holes (20) of the mold outer tube are arranged.

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