Flaring device for firework cylinder processing

Abstract

The utility model discloses a flaring device for firework cylinder processing, which belongs to the technical field of firework processing equipment and comprises a mounting plate, a second movable plate is mounted on the mounting plate through a push rod, and at least one flaring mechanism is arranged on the second movable plate. A flaring structure is arranged at the bottom of the flaring mechanism, and flaring operation is conducted on the firework cylinder through the flaring structure. According to the flaring structure formed by the elastic pieces, after the elastic pieces are plugged into the barrel opening, the barrel opening of the firework barrel can be flared from the interior of the barrel opening, and the situation that the edge of the barrel opening of the firework barrel rolls inwards or the barrel opening of the firework barrel is fractured due to serious deformation of the barrel opening is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireworks processing equipment, in particular to a mouth-expanding device for processing fireworks tubes. Background Art

[0002] Fireworks generally consist of a launching tube, an effect inner tube, propellant and a fuse. The launching tube is generally divided into paper tube, fiberglass launching tube and molded launching tube. Paper tube is the most widely used. When producing various combination fireworks, it is necessary to arrange the launching tubes to achieve the corresponding launching effect. However, the mouth of the paper tube may be deformed during the production and transportation process. When the tube mouth is deformed, it is necessary to use an expanding device to expand the mouth of the paper tube.

[0003] Existing fireworks expanding devices, such as the Chinese patent document with publication number CN216348102U, discloses a combined fireworks expanding device that is convenient for continuous production, which expands the tube mouth of the fireworks tube through a material tray driving unit and a expanding unit. However, when the tube mouth of the fireworks tube is concave inward, when the tube mouth of the fireworks tube is expanded by the expanding unit described in the patent document, the tube mouth of the fireworks tube may be squeezed inward, resulting in incomplete expansion of the tube mouth of the fireworks tube. In severe cases, the edge of the tube mouth of the fireworks tube may be pressed inward and rolled into the fireworks tube or cracked. Utility Model Content

[0004] In view of the above problems, the utility model provides a expanding device for processing firework tubes. The expanding structure formed by the elastic sheet can expand the tube mouth of the firework tube from the inside of the tube mouth after the elastic sheet is inserted into the tube mouth, thereby avoiding the situation where the edge of the tube mouth of the firework tube rolls inward or the tube mouth of the firework tube is fractured due to severe deformation of the tube mouth.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A flaring device for processing a firework tube comprises a mounting plate, wherein the mounting plate is mounted with a second movable plate via a push rod, wherein the second movable plate is provided with at least one flaring mechanism; a flaring structure is provided at the bottom of the flaring mechanism, and the flaring operation of the firework tube is performed via the flaring structure.

[0007] As a further improvement of the above technical solution, the expansion mechanism includes an outer cylinder, a top block is movably arranged inside the outer cylinder, an elastic sheet is arranged at the lower part of the outer cylinder, the elastic sheets are arranged in a circular array to form a expansion structure, and the top block is used to push the elastic sheet open.

[0008] As a further improvement of the above technical solution, the outer cylinder is installed under the first movable plate, the top block is connected to the second movable plate through a connecting rod, a guide rod is provided on the first movable plate, the upper part of the guide rod is slidably sleeved in the sliding hole of the second movable plate, and the movement stroke of the top block is greater than the movement stroke of the outer cylinder.

[0009] As a further improvement of the above technical solution, guide rails are arranged on both sides of the mounting plate, and blocks are arranged at the bottom of the guide rails. The blocks are used to limit the movable stroke of the first movable plate, and sliding grooves matching with guide rods are arranged on both sides of the first movable plate.

[0010] As a further improvement of the above technical solution, a limit block is provided at the upper end of the guide rod, and the limit block is used to prevent the guide rod from falling out of the sliding hole. A spring is provided on the outside of the guide rod, and the spring is located between the first movable plate and the second movable plate.

[0011] As a further improvement of the above technical solution, the mounting plate is mounted on the conveyor belt via support columns arranged on both sides, and the stopper is arranged on the support columns.

[0012] As a further improvement of the above technical solution, the first movable plate moves along with the second movable plate, and a through hole is provided on the first movable plate, and the through hole is used for a connecting rod to pass through the first movable plate to connect the top block with the second movable plate.

[0013] As a further improvement of the above technical solution, the lower part of the elastic sheet shrinks inward, and the elastic sheets arranged in a circular array form a pointed cone at the lower part; the cross-sectional shape of the top block is circular, the diameter of the top block is less than 0.9 times the diameter of the outer cylinder, and the diameter of the top block is greater than 0.6 times the diameter of the outer cylinder.

[0014] Compared with the prior art, the utility model has the following beneficial effects: it provides a flaring device for processing firework tubes, and the flaring structure formed by the elastic sheet can flare the tube mouth of the firework tube from the inside of the tube mouth after the elastic sheet is inserted into the tube mouth, thereby avoiding the situation where the edge of the tube mouth of the firework tube rolls inward or the tube mouth of the firework tube is crushed due to severe deformation of the tube mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the expansion mechanism of the utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the utility model in section.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the expansion mechanism of the utility model.

[0019] In the figure: 1. conveyor belt; 2. support column; 3. mounting plate; 4. push rod; 5. guide rail; 6. expansion mechanism; 7. first movable plate; 8. second movable plate; 9. guide rod; 10. spring; 51. stopper; 61. outer cylinder; 62. top block; 63. connecting rod; 64. elastic sheet. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model. Example

[0021] like Figure 1 As shown, a flaring device for processing firework tubes is used for flaring the filling inner tube mouth of the firework tube. The flaring device is installed on both sides of the conveyor belt 1 through support columns 2. A push rod 4 is installed on the mounting plate 3. The telescopic end of the push rod 4 is connected to the second movable plate 8 to drive the second movable plate 8 to move up and down. The push rod 4 is generally a cylinder, and of course, it can also be replaced by an oil cylinder or an electric push rod 4. It is connected to the connecting rod 63 of the flaring mechanism 6 below the second movable plate 8. The number of flaring mechanisms 6 is not less than one, and they are arranged in a linear array along the direction of the second movable plate 8, wherein the number of array settings is consistent with the number of firework tubes in the same row of the firework group basin; a flaring structure is arranged at the bottom of the flaring mechanism 6, and the flaring structure has a small bottom end and a large top end. The flaring structure of this shape can effectively flare the opening of the firework tube.

[0022] like Figure 4 As shown, as a preferred embodiment of the above embodiment, the expansion mechanism 6 includes a vertically arranged outer cylinder 61, in which a top block 62 which can slide along the axial direction of the inner cylinder is arranged, and an elastic sheet 64 is fixedly arranged on the inner wall of the lower end of the outer cylinder 61, wherein the elastic sheets 64 are arranged in an array along the circumference of the inner wall, and a expansion structure is formed by the elastic sheets 64 arranged in a circular array, wherein the top block 62 can push open the elastic sheet 64 after moving downward into the expansion structure.

[0023] like Figure 1-3As shown, as a preferred embodiment of the above embodiment, the outer cylinder 61 is fixedly installed below the first movable plate 7, wherein the top block 62 is fixedly connected to the second movable plate 8 through a connecting rod 63, and the top block 62 is driven to move by the second movable plate 8, and guide rods 9 are fixedly arranged on the left and right sides of the first movable plate 7, wherein the setting direction of the guide rods 9 is consistent with the movement direction of the second movable plate 8, and the upper part of the guide rods 9 is slidably sleeved in the sliding hole of the second movable plate 8, and the setting of the guide rods 9 and the sliding hole can guide the movement of the second movable plate 8, wherein in order to ensure that the top block 62 can push the elastic sheet 64 open, it is necessary to set the movable stroke of the top block 62 to be greater than the movable stroke of the outer cylinder 61.

[0024] like Figure 1-3 As shown, as a preferred embodiment of the above embodiment, guide rails 5 are arranged on both sides of the mounting plate 3, wherein the guide rails 5 are located on the outside of the guide rod 9, and a stopper 51 is arranged at the bottom of the guide rails 5, and the stopper 51 is used to limit the movable stroke of the first movable plate 7, and sliding grooves cooperating with the guide rod 9 are arranged on both sides of the first movable plate 7.

[0025] Specifically, when the push rod 4 pushes the second movable plate 8 to move downward, the first movable plate 7 will also move downward under the action of gravity or the spring 10. When the first movable plate 7 slides along the guide rail 5 to a position in contact with the baffle, the baffle will block the first movable plate 7, so that the first movable plate 7 cannot continue to move downward. When the push rod 4 continues to push downward, the second movable plate 8 will continue to move downward along the guide rod 9, and push the top block 62 to slide in the outer tube 61 through the connecting rod 63, so that the bottom of the elastic sheet 64 can be slowly pushed open by the downward moving top block 62. Because when the first movable plate 7 moves downward to the baffle, the lower cone-shaped structure of the elastic sheet 64 enters the firework tube. Therefore, when the top block 62 pushes the bottom of the elastic sheet 64 open, it can expand the mouth of the firework tube.

[0026] like Figure 1-3 As shown, as a preferred embodiment of the above embodiment, a limit block is provided at the upper end of the guide rod 9, and the limit block is provided above the second movable plate 8 to prevent the guide rod 9 from infinitely moving downward and falling out of the sliding hole of the second movable plate 8. In order to prevent the guide rod 9 from getting stuck during the sliding process, a spring 10 is sleeved on the guide rod 9. The first movable plate 7 is driven to move downward by the spring 10 or gravity during the downward movement of the second movable plate 8. The spring 10 is located between the first movable plate 7 and the second movable plate 8.

[0027] As a preferred embodiment of the above embodiment, the mounting plate 3 is mounted on the conveyor belt 1 through the support columns 2 arranged on both sides, and the stopper 51 is arranged on the support column 2.

[0028] Specifically, support columns 2 are fixedly provided on the left and right sides of the mounting plate 3, and the fixing method can be bolts. Mounting frames are extended on both sides of the conveyor belt 1, wherein the support columns 2 are fixed on the mounting frames by bolts, and the mounting frames and the conveyor belt 1 frame are also fixedly connected by bolts.

[0029] As a preferred mode of the above embodiment, the first movable plate 7 moves along with the second movable plate 8 , and a through hole is provided on the first movable plate 7 , and the through hole is used for the connecting rod 63 to pass through the first movable plate 7 to connect the top block 62 with the second movable plate 8 .

[0030] As a preferred embodiment of the above embodiment, the lower part of the elastic sheet 64 contracts inward, and the elastic sheets 64 arranged in a circular array form a pointed cone shape at the lower part; the cross-sectional shape of the top block 62 is circular, and the diameter of the top block 62 is less than 0.9 times the diameter of the outer cylinder 61, and the diameter of the top block 62 is greater than 0.6 times the diameter of the outer cylinder 61.

[0031] In this embodiment, the downward movement of the first movable plate 7 is related to the position from the middle of the elastic sheet 64 to the upper opening of the firework tube. Usually, when the first movable plate 7 moves downward to the end of the stroke, the lower end of the elastic sheet 64 is completely located in the upper opening of the firework tube.

[0032] The specific working principle of this utility model is as follows: Figure 1-4 As shown, before use, the worker inserts the pointed cone lower end formed by the elastic sheet 64 into the specific position of the depth adjustment block 51 of the firework tube as needed, so that when the first movable plate 7 moves to a position close to the block 51, the pointed cone lower end formed by the elastic sheet 64 can be inserted into the firework tube mouth, and there is a gap of less than 10 mm with the edge of the firework tube mouth. When in use, the second movable plate 8 is driven by the push rod 4 to move downward together with the first movable plate 7. When the first movable plate 7 moves to a position in contact with the block 51, the pointed cone lower end formed by the elastic sheet 64 is inserted into the firework tube mouth. Then, under the continued push of the push rod 4, the first movable plate 7 is fixed, and the second movable plate 8 continues to move downward, and the top block 62 is driven by the connecting rod 63 to continue to move downward. When the top block 62 moves to the pointed cone part formed by the elastic sheet 64, the elastic sheet 64 will be squeezed outward, thereby expanding the firework tube mouth from the inside to the outside.

[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention.

[0035] The above is only a preferred embodiment of the present utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the present utility model.

Claims

1. A firework tube expansion device, characterized in that: The firework tube is provided with a second movable plate (8) mounted on the mounting plate (3) via a push rod (4), and the second movable plate (8) is provided with at least one expanding mechanism (6); a expanding structure is provided at the bottom of the expanding mechanism (6), and an expanding operation is performed on the firework tube via the expanding structure.

2. The device for expanding a firework tube according to claim 1, characterized in that: The expansion mechanism (6) comprises an outer cylinder (61), a push block (62) is movably arranged inside the outer cylinder (61), an elastic sheet (64) is arranged at the lower part of the outer cylinder (61), the elastic sheets (64) are arranged in a circular array to form an expansion structure, and the push block (62) is used to push open the elastic sheets (64).

3. The device for expanding a firework tube according to claim 2, characterized in that: The outer cylinder (61) is mounted under the first movable plate (7); the top block (62) is connected to the second movable plate (8) via a connecting rod (63); a guide rod (9) is provided on the first movable plate (7); the upper portion of the guide rod (9) is slidably sleeved in a sliding hole of the second movable plate (8); and the movement stroke of the top block (62) is greater than the movement stroke of the outer cylinder (61).

4. A firework tube expansion device according to claim 3, characterized in that: Guide rails (5) are arranged on both sides of the mounting plate (3), and a stopper (51) is arranged at the bottom of the guide rail (5). The stopper (51) is used to limit the movable stroke of the first movable plate (7), and sliding grooves matching with the guide rods (9) are arranged on both sides of the first movable plate (7).

5. The device for expanding a firework tube according to claim 3, characterized in that: A limit block is provided at the upper end of the guide rod (9), the limit block being used to prevent the guide rod (9) from falling out of the sliding hole, and a spring (10) is provided on the outer side of the guide rod (9), the spring (10) being located between the first movable plate (7) and the second movable plate (8).

6. The device for expanding a firework tube according to claim 4, characterized in that: The mounting plate (3) is mounted on the conveyor belt (1) via support columns (2) arranged on both sides, and the stopper (51) is arranged on the support columns (2).

7. The device for expanding a firework tube according to claim 3, characterized in that: The first movable plate (7) moves following the second movable plate (8), and a through hole is provided on the first movable plate (7), wherein the through hole is used for a connecting rod (63) to pass through the first movable plate (7) to connect the top block (62) with the second movable plate (8).

8. The device for expanding a firework tube according to claim 3, characterized in that: The lower part of the elastic sheet (64) is contracted inwards, and the elastic sheets (64) arranged in a circular array form a pointed cone at the lower part; the cross-sectional shape of the top block (62) is circular, the diameter of the top block (62) is less than 0.9 times the diameter of the outer cylinder (61), and the diameter of the top block (62) is greater than 0.6 times the diameter of the outer cylinder (61).

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