Single firework bright bead filling device

Abstract

The utility model discloses a single firework bright bead filling device which is characterized in that a swing box is mounted on a lifting frame, fireworks on a conveying mechanism pass through the lower portion of the swing box, and the swing box is connected with a swing driving mechanism to be switched among a forward inclined state, a horizontal state and a reverse inclined state; the lower concave part of the bottom surface of the swinging box and the blanking part are respectively positioned on two opposite sides of the connecting part; when the telescopic plate in the downward concave part retracts downwards, the downward concave part forms a concave cavity for accommodating a plurality of firework bright beads; a switch plate is correspondingly arranged below an upper die plate of the discharging part, and the switch plate horizontally moves in a reciprocating mode so that the corresponding switch holes and the upper die holes can be switched between the staggered state and the overlapped state. And on the basis of ensuring the reliability and the safety of filling work, the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to a device for respectively filling single firework bright beads into a plurality of launching cavities of fireworks. Background Art

[0002] Fireworks typically load a number of beads into their launch chambers at once. However, certain special-effect beads with relatively large particle sizes can only be loaded one per launch chamber. Prior art loading of these individual fireworks beads is performed manually, making automated production difficult. This low efficiency often becomes a bottleneck in the production line. Furthermore, the relatively large particle size of these special-effect beads means that a large number of them flow through the container primarily in a rolling and bouncing manner, which differs from the flow characteristics of other pyrotechnic materials, such as powdered pyrotechnic powder or fine beads. Therefore, adopting existing pyrotechnic material loading equipment is difficult to ensure reliable and safe operation. Utility Model Content

[0003] In order to solve the above-mentioned drawbacks, the technical problem to be solved by the present invention is to provide a device for respectively loading single firework bright beads into multiple launching cavities of fireworks, thereby effectively improving production efficiency. In order to solve the above technical problems, the technical solution adopted by the present invention is a single firework bead filling device, including a firework conveying mechanism and a lifting frame arranged above the fireworks, characterized in that a swing box is installed on the lifting frame, the fireworks on the conveying mechanism pass under the swing box, the swing box is connected to the swing driving mechanism to switch among three states: a forward tilting state, a horizontal state, and a reverse tilting state; the bottom surface of the swing box is composed of a lower recess, a connecting portion and a discharge portion, the lower recess and the discharge portion are respectively located on opposite sides of the connecting portion; a telescopic plate is correspondingly provided in the lower recess, and when the telescopic plate is retracted, the lower recess forms a concave cavity for accommodating a plurality of firework beads; the discharge portion includes an upper template flush with the connecting portion, a switch plate is correspondingly provided below the upper template, a plurality of upper die holes for allowing a single firework bead to pass through are distributed on the upper template, a plurality of switch holes for allowing a single firework bead to pass through are distributed on the switch plate, the switch holes are arranged corresponding to the upper die holes, and the switch plate moves back and forth horizontally so that the corresponding switch holes and the upper die holes are switched between two states of misalignment and overlap.

[0004] The operating process is as follows: the switch plate is in an offset state, the horizontal swing box switches to a forward tilted state, the telescopic plate extends, and the fireworks beads stored in the concave cavity of the lower part roll through the connection to the discharge part and are filled into each upper die hole one by one. The swing box switches to a reverse tilt state, the telescopic plate retracts, and the redundant fireworks beads that failed to fill the upper die holes roll back to the lower concave through the connection. The swing box returns to a horizontal state, the fireworks on the conveyor mechanism are positioned below the corresponding swing box, the swing box on the lifting frame descends close to the fireworks, the switch hole aligns with the ports of the fireworks' firing chamber, the switch plate switches to a superimposed state, and the fireworks beads in each upper die hole fall through the switch hole into the firing chamber below. After one loading is completed, the swing box rises and resets to prepare for the next operation.

[0005] In one embodiment, the swing box is provided with a vibrator to promote the rolling of the fireworks beads.

[0006] In one embodiment, the depth of the upper die hole is less than the diameter of the fireworks bead. Preferably, the depth of the upper die hole is less than 1.5 mm of the diameter of the fireworks bead. This can significantly reduce the need for reassembly and effectively improve the reliability of the device.

[0007] In one embodiment, the upper die hole is provided with an inlet slope on one side near the connecting portion. Below the bottom of the inlet slope is a positioning step located on the sidewall of the upper die hole. This facilitates the entry of fireworks beads into the upper die hole in a forward tilt state, while effectively preventing the fireworks beads from escaping the upper die hole in a reverse tilt state.

[0008] In one embodiment, the connecting portion is provided with a plurality of steps that gradually rise from the lower concave portion toward the lower material portion, with the height of each step being less than the diameter of a single firework bead. This prevents the firework beads in the lower concave portion from flowing back into the lower material portion in a horizontal state, while ensuring that the firework beads can flow from the lower concave portion into the lower material portion in a forward tilted state.

[0009] In one embodiment, the tilt angle A of the swing box in the forward tilt state and the reverse tilt state is between 20 and 40 degrees, preferably 33 degrees.

[0010] The beneficial effect of the present invention is that it provides an automated device for loading single firework beads into multiple launching cavities of fireworks respectively. The beads move smoothly and in place, which can eliminate the safety hazards caused by the collision of the beads and prevent the beads from being broken; it can eliminate the phenomenon of reloading of firework beads of various specifications, ensure that the firework beads enter the upper mold hole in the forward tilting state, and prevent the firework beads from leaving the upper mold hole in the reverse tilting state; therefore, the above technical solution is adopted to effectively improve the production efficiency on the basis of ensuring the reliability and safety of the filling work.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time.

[0012] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0013] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0015] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0016] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0017] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0019] Figure 2 This is a schematic diagram of the swing box and lifting frame structure of Example 1.

[0020] Figure 3 This is a structural diagram of the swing box of Example 1.

[0021] Figure 4 This is a schematic diagram of the bottom structure of the swing box and the lifting frame of Example 1.

[0022] Figure 5 This is a structural diagram of the swing box of Example 1 in the forward tilting state.

[0023] Figure 6 This is a structural diagram of the swing box in the reverse tilt state of Example 1.

[0024] Figure 7 This is a partially enlarged structural schematic diagram of the upper template of Example 1 (the firework beads are not shown).

[0025] Figure 8 This is a partially enlarged structural schematic diagram of the upper template of Example 1 (showing the firework beads).

[0026] Figure 9 This is a schematic diagram of the swing box structure of Example 2. DETAILED DESCRIPTION

[0027] Example 1: See attached Figure 1-8 , reflecting a specific structure of the present invention. The single firework bead loading device includes a conveyor belt 2 for fireworks 1 and a lifting frame 3 arranged above the fireworks 1. A swing box 4 is installed on the lifting frame 3. The fireworks 1 on the conveyor belt 2 pass under the swing box 4. The swing box 4 is connected to a swing drive mechanism. In the example, the rotating shaft 401 of the swing box 4 is suspended on the base plate 301 through a cantilever 402. The four corners of the base plate 301 are installed on the optical axis guide rail 303 through a sliding seat 302. The lifting cylinder 304 drives the swing box 4 to move up and down along the optical axis guide rail 303 through the base plate 301. The swing cylinder 403 is installed on the base plate 301. The swing cylinder 403 is hinged to one end of the swing box 4 through the rocker arm 404, thereby pushing the swing box 4 to rotate around the rotating shaft. The swing cylinder 403 drives the swing box 4 to switch between three states: a forward tilt state, a horizontal state, and a reverse tilt state through the different extension strokes of its piston rod.

[0028] The bottom surface of the swing box 4 is composed of a recessed portion 41, a connecting portion 42 and a blanking portion 43, and the recessed portion 41 and the blanking portion 43 are respectively located on opposite sides of the connecting portion 42; in the example, the swing cylinder 403 is hinged to one end of the swing box 4 close to the blanking portion 43 through the rocker arm 404.

[0029] In this example, a telescopic plate 411 is correspondingly disposed in the lower recess 41. A telescopic cylinder 413 and a guide sleeve 415 are disposed on a bottom plate 412 below the telescopic plate 411. A guide post 414 of the telescopic plate 411 is mounted within the guide sleeve 415. The telescopic cylinder 413 drives the telescopic plate 411 to telescope up and down along the guide sleeve 415. When the telescopic plate 411 is retracted, a cavity is formed within the lower recess 41 to accommodate a plurality of firework beads.

[0030] In this example, the blanking portion 43 includes an upper mold plate 431 flush with the connecting portion 42. A switch plate 432 is positioned below the upper mold plate 431. The upper mold plate 431 is provided with a plurality of upper mold holes 433 that allow individual firework beads 5 to pass through. The switch plate 432 is provided with a plurality of switch holes 434 that allow individual firework beads 5 to pass through. The switch holes 434 are positioned correspondingly to the upper mold holes 433. A switch cylinder 435 drives the switch plate 432 to move horizontally back and forth, switching the corresponding switch holes 434 and upper mold holes 433 between misalignment and overlap. In this example, a lower mold plate 436 is also positioned below the switch plate 432. Lower mold holes 437 are positioned on the lower mold plate 436 corresponding to the upper mold holes 433.

[0031] In the example, the swing box 4 is provided with a vibrator 6 to promote the rolling of the fireworks beads and avoid the beads from sticking in the forward and reverse tilt states, resulting in poor movement.

[0032] The working process of the above device is as follows: the switch plate 432 is in a dislocated state, the horizontal swing box 4 switches to a forward tilting state, and at the same time the telescopic plate 411 extends upward to a position roughly flush with the connecting portion 42. The fireworks beads stored in the concave cavity of the lower recess 41 roll to the discharge portion 43 through the connecting portion 42 and are filled into each upper die hole 433 one by one; the swing box 4 switches to a reverse tilting state, the telescopic plate 411 retracts downward, and the redundant fireworks beads that cannot be filled into the upper die holes 433 roll back to the lower recess 41 through the connecting portion 42; the swing box 4 returns to a horizontal state, and the fireworks 1 on the conveyor belt 2 is now positioned below the corresponding swing box 4. The swing box 4 on the lifting frame 3 descends close to the fireworks 1, the lower surface of the lower mold plate 436 abuts the upper surface of the fireworks 1, and the lower die holes 437 are aligned with the ports of the various firing chambers of the fireworks 1. The switch plate 432 switches to a closed state, and the fireworks beads in each upper die hole 433 fall into the lower firing chamber through the switch hole 434 and the lower die hole 437 in sequence. After one loading is completed, the switch plate 432 is reset to the dislocated state, and the swing box 4 rises and resets to prepare for the next work.

[0033] Generally speaking, due to the redundant beads returning to the lower recess 41, the depth of the upper die hole 433 should be sufficient to accommodate the entire firework bead, or even deeper, to ensure that the firework bead does not escape from the upper die hole 433. However, in practice, it has been found that such a configuration can lead to overloading, that is, more than one firework bead is loaded into some firing chambers of the firework 1. Although this problem does not occur in all fireworks 1, and it is likely that only a few firing chambers of each firework 1 will have problems, due to the role of special effect beads, this phenomenon can seriously affect the fireworks effect, calling into question the reliability of the equipment and affecting its widespread application.

[0034] Research and analysis found that the diameter of the fireworks bead is S, the thickness of the upper mold plate 431 (or the depth of the upper mold hole 433) is H, and the diameter of the upper mold hole 433 is R. Since the upper mold hole 433 must allow a single fireworks bead to pass smoothly, the aperture R of the upper mold hole 433 must be larger than the diameter S of a single fireworks bead 5. When H ≥ S, there must be a certain amount of redundant space between the spherical single fireworks bead 5 and the cylindrical cavity. When tilted in the reverse direction, the excess fireworks beads are stuck in this redundant space and do not return to the lower recess 41. When horizontal, they fall into the launch cavity together, resulting in the above-mentioned reloading phenomenon. In the experiment, it was found that setting the depth H of the upper mold hole to be smaller than the diameter S of the fireworks bead can greatly reduce the above-mentioned reloading phenomenon and ensure that the redundant fireworks bead will not fall out of the upper mold hole 433 during the process of returning to the lower recess 41, effectively improving the working reliability of the device. In particular, according to statistical observations of experimental samples, setting the depth H of the upper mold hole 433 to be 1.5 mm smaller than the diameter S of the fireworks beads is an experimental data with better overall performance.

[0035] In this example, the upper die hole 433 is provided with an inlet slope 4331 on one side near the connecting portion 42. Below the bottom of the inlet slope 4331 is a positioning step 4332, which is located on the sidewall of the upper die hole 433. This not only facilitates the entry of fireworks beads into the upper die hole in the forward tilt state, but also effectively prevents the fireworks beads from escaping the upper die hole in the reverse tilt state.

[0036] Experiments have shown that the tilt angle A of the swing box in the forward tilt state and the reverse tilt state is between 20 and 40 degrees, preferably between 30 and 35 degrees, and most preferably 33 degrees. The diameter of the fireworks beads is S, the thickness of the upper mold plate (or the depth of the upper mold hole) is H, the diameter of the upper mold hole is R, and the height of the positioning step is L. The matching relationship between them is set according to the following ratio: S:R:H:L=15~17:18~20:12~14:9~11. The best is S:R:H:L=16:19:13:10. This is experimental data with better comprehensive performance. For example, in the example, S is 8 mm, R is 9.5 mm, H is 6.5 mm, and L is 5 mm.

[0037] In actual operation, the present invention, employing the above-mentioned preferred solution, has been found to prevent reloading of fireworks beads of various specifications, ensuring that fireworks beads enter the upper die hole when tilted in the forward direction, and preventing them from escaping the upper die hole when tilted in the reverse direction. Furthermore, the beads are ensured to move smoothly and in place, eliminating safety hazards caused by collisions and preventing them from breakage.

[0038] Example 2: See attached Figure 9 , reflecting another specific structure of the present invention. Unlike Example 1, the connecting portion 701 is provided with a plurality of steps 704 that gradually rise from the lower recess 702 toward the lower material portion 703. The height of each step 704 is less than the diameter of a single firework bead. This prevents the firework bead from flowing back into the lower material portion in the horizontal position, while ensuring that the firework bead can enter the lower material portion from the lower recess when tilted forward.

[0039] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described. Obviously, many modifications and changes can be made based on the contents of this specification. This specification selects and describes these embodiments in detail in conjunction with the accompanying drawings in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A single firework bead loading device, comprising a firework conveying mechanism and a lifting frame arranged above the firework, characterized in that: A swing box is installed on the lifting frame, and the fireworks on the conveying mechanism pass under the swing box. The swing box is connected to the swing driving mechanism to switch among three states: forward tilting state, horizontal state and reverse tilting state; the bottom surface of the swing box is composed of a lower recess, a connecting part and a blanking part, and the lower recess and the blanking part are respectively located on opposite sides of the connecting part; a telescopic plate is correspondingly provided in the lower recess, and when the telescopic plate is retracted, the lower recess forms a concave cavity for accommodating a number of firework beads; the blanking part includes an upper template flush with the connecting part, and a switch plate is correspondingly provided under the upper template, and a number of upper mold holes allowing a single firework bead to pass through are distributed on the upper template, and a number of switch holes allowing a single firework bead to pass through are distributed on the switch plate, and the switch holes are correspondingly arranged with the upper mold holes. The switch plate moves back and forth horizontally so that the corresponding switch holes and the upper mold holes switch between the two states of misalignment and overlap.

2. A single firework bright bead filling device as claimed in claim 1, characterized in that: The depth of the upper die hole is smaller than the diameter of the fireworks beads.

3. A single firework bright bead filling device as claimed in claim 2, characterized in that: The depth of the upper die hole is less than the diameter of the firework beads by 1.5 mm.

4. A single firework bright bead filling device according to any one of claims 1 to 3, characterized in that: A hole entry slope is provided on one side of the upper die hole close to the connecting portion, and a positioning step is provided below the bottom end of the hole entry slope, which is located on the side wall of the upper die hole.

5. A single firework bright bead filling device according to any one of claims 1 to 3, characterized in that: The connecting portion is provided with a plurality of steps which gradually rise from the lower concave portion to the lower material portion, and the height of each step is smaller than the diameter of a single firework bright bead.

6. A single firework bright bead filling device as claimed in claim 4, characterized in that: The connecting portion is provided with a plurality of steps which gradually rise from the lower concave portion to the lower material portion, and the height of each step is smaller than the diameter of a single firework bright bead.

7. A single firework bright bead filling device as claimed in any one of claims 1, 2, 3 and 6, characterized in that: The tilt angle A of the swing box in the forward tilt state and the reverse tilt state is between 20 and 40 degrees.

8. A single firework bright bead filling device as claimed in claim 7, characterized in that: The tilt angle A of the swing box in the forward tilt state and the reverse tilt state is 33 degrees.

9. A single firework bright bead filling device as claimed in any one of claims 1, 2, 3, 6 and 8, characterized in that: The swing box is provided with a vibrator.

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