An end-face sealing device for a fireworks tube

Abstract

This invention discloses an end-face sealing device for fireworks tubes, comprising an adhesive applicator, a paper-adhesive applicator, and a paper-straightening applicator sequentially distributed along a conveyor belt; a fixing clamp for several fireworks tubes is fixedly distributed on an intermittent stepping conveyor belt; the outer opening of the adhesive applicator's adhesive tube faces the fireworks tube, and a driving mechanism causes the end of the fireworks tube to be inserted into the adhesive applicator accordingly; the paper-adhesive applicator's paper box opening faces the fireworks tube, and the paper box is equipped with an elastic paper-pushing component to push the packaging paper stack towards the opening, and a driving mechanism causes the end of the fireworks tube to be inserted into the opening of the paper box accordingly; the paper-straightening applicator includes a sleeve composed of several arc-shaped pieces, and a driving mechanism causes the end of the fireworks tube to be inserted into the sleeve accordingly; the driving mechanism causes the arc-shaped pieces to move back and forth radially along the sleeve. The device automatically completes the end-face sealing process of fireworks tubes; the operation is reliable and efficient; the process decomposition and distribution are reasonable, the processing actions are simple and gentle, effectively ensuring safe production; and it is suitable for sealing fireworks tubes of various specifications.

Description

Technical Field

[0001] This invention relates to a packaging device for fireworks tubes. Background Technology

[0002] The fireworks tubes described in this invention refer to fireworks products or components with a cylindrical or prismatic shape. Classified by function, they include, but are not limited to, packaging tubes, launch tubes, and effect tubes. Product classifications cover types such as spray fireworks, rotating fireworks, aerial fireworks, display fireworks, sparkler fireworks, toy fireworks, frame fireworks, combination fireworks, and confetti fireworks. The fireworks tubes described in this invention particularly include packaging tubes, launch tubes, and effect tubes for confetti fireworks, whether powered by compressed air or gunpowder.

[0003] In fireworks manufacturing, packaging paper needs to be pasted onto both ends of the fireworks tube for sealing, with the middle portion of the packaging paper covering the end face of the fireworks tube and the periphery of the packaging paper pasted onto the side wall of the fireworks tube near the end face. The packaging paper described in this invention can be made of paper, plastic, film, composite materials, etc.

[0004] In the prior art, the utility model patent document with authorization announcement number CN 206944837 U discloses "a fireworks packaging device"; the invention patent document with application publication number CN109204928A discloses "an upper and lower sticker structure for a fully automatic packaging machine for combined fireworks"; the invention patent document with application publication number CN109264077A discloses "a fully automatic packaging machine for combined fireworks", etc., all attempt to realize the automated processing of packaging at both ends of fireworks products. The main principle is to use a method of pressing the packaging paper with a pressure cardboard, an upper sticker structure 6 and a lower sticker structure 7 towards the top and bottom surfaces of the product to perform the sealing and packaging work, so that the outer periphery of the upper and lower packaging paper is adhered to the side wall of the fireworks tube box.

[0005] The existing equipment described above processes the entire assembly of combination fireworks. Combination fireworks mainly consist of a combination of multiple paper tubes forming a bowl and a molded body. The processing objects are very different from those of firework tubes. Therefore, the existing equipment is not suitable for the automatic packaging of firework tubes. In current production practice, the packaging of firework tubes is still done manually, resulting in low work efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a highly efficient device for packaging both ends of a fireworks tube. The technical solution adopted by this invention is an end-face packaging device for fireworks tubes, characterized in that it includes a conveyor belt for the fireworks tube, and further includes an adhesive application mechanism, a paper-adhesive mechanism, and a paper-straightening mechanism sequentially distributed along the conveyor belt.

[0007] The conveyor belt is equipped with an intermittent stepping drive mechanism, and a number of fixing clamps for firework tubes are fixedly distributed on the conveyor belt;

[0008] The gluing mechanism includes a gluing tube, which is connected to a glue supply mechanism. The gluing tube has an outer opening facing the end of the firework tube on the fixing clamp. The gluing tube and / or the fixing clamp are provided with a first linear reciprocating drive mechanism, which causes the end of the firework tube to be inserted into the gluing tube.

[0009] The adhesive paper mechanism includes a cardboard box containing a stack of packaging paper, the cardboard box having an opening facing the end of a firework tube on a fixing clamp, the cardboard box being provided with an elastic paper pushing component that pushes the stack of packaging paper toward the opening, and the cardboard box and / or the fixing clamp being provided with a second linear reciprocating drive mechanism that causes the end of the firework tube to be inserted into the opening of the cardboard box.

[0010] The paper-straightening mechanism includes a sleeve composed of several arc-shaped pieces, with the sleeve opening facing the end of the firework tube on the fixed clamp. The sleeve and / or the fixed clamp are provided with a third linear reciprocating drive mechanism, which causes the end of the firework tube to be inserted into the sleeve. The arc-shaped pieces are provided with a fourth linear reciprocating drive mechanism, which causes the arc-shaped pieces to move back and forth radially along the sleeve.

[0011] On the conveyor belt: Preferably, the fixing clamp consists of a first clamping body and a second clamping body. Each clamping body includes a clamping element and a clamping seat. The clamping seat is fixed on the conveyor belt, and the clamping element is fixed on the clamping seat by a buffer element. In the straight section of the conveyor belt, the openings of the clamping elements of the two clamping bodies are brought together to clamp the firework tube. In the rotating section of the conveyor belt, the openings of the clamping elements of the two clamping bodies are separated.

[0012] Furthermore, the conveyor belt is composed of several parallel sprocket and chain assemblies, the clamping member is an arc-shaped groove, each clamping member is provided with several parallel clamping seats, the number of clamping seats corresponds to the number of sprocket and chain assemblies, and each clamping seat is fixed on a link of the chain.

[0013] Preferably, the clamp base includes a base plate and a positioning plate. The base plate is fixed on the chain link. The positioning plate is provided with a waist-shaped hole and a column. Bolts connect the positioning plate and the base plate through the waist-shaped hole. The column is connected to the base through a spring. The base is fixed to the clamping member.

[0014] Preferably, the conveyor belt is equipped with an intermittent position locking mechanism.

[0015] In the glue application mechanism: preferably, the glue application tube and / or fixing clamp are provided with a rotary drive mechanism, which causes the firework tube and the glue application tube to rotate relative to each other.

[0016] Preferably, the glue-applying cylinder is disposed in the central hole of the rotating glue container, and the central hole is connected to the inner cavity of the rotating glue container where the glue is stored; the glue-applying cylinder is frustum-shaped, with the larger end being the external opening and the smaller end being the internal opening connecting to the inner cavity of the rotating glue container, the internal opening being sealed by a covering layer, the covering layer being a structure through which the glue can permeate.

[0017] Preferably, the portion of the central hole located within the inner cavity of the rotating glue can is provided with a toothed collar, and the inner opening and outer wall of the upper glue cylinder are wrapped by a covering layer and nested within the central hole and the toothed collar.

[0018] Preferably, the gluing mechanism includes a gluing movable seat whose position can be adjusted along the first guide rail. The gluing movable seat is provided with a gluing cylinder and a gluing movable worktable. The gluing cylinder drives the gluing movable worktable to move back and forth along the second guide rail. A rotating glue tank and its drive motor are installed on the gluing movable worktable.

[0019] Preferably, a support plate is fixedly mounted on the glue-applying moving worktable. The support plate is divided into a fixed part and a swinging part. The swinging part is hinged to the fixed part, and the rotating glue tank and its drive motor are mounted on the swinging part. The rotating glue tank is provided with an openable sealing end cover, and the center hole is located on the sealing end cover.

[0020] Preferably, the rotating glue can is provided with a magnetic reluctance turbulence assembly, including a metal turbulence ball placed in the inner cavity of the rotating glue can, and an electromagnet installed at the top of the rotating glue can, wherein the electromagnet is not connected to the rotating glue can.

[0021] In the paper-sticking mechanism: preferably, the paper box and / or fixing fixture are provided with a rotary drive mechanism, which causes the firework tube and the paper box to rotate relative to each other.

[0022] Preferably, the elastic paper pusher assembly includes a paper pusher plate, one end of which is fixedly connected to a paper pusher shaft, and the other end of which is connected to a handle. The handle is located outside the paper box. The paper pusher shaft is mounted on the paper gluing moving worktable via a positioning bushing. A spring is fitted on the paper pusher shaft inside the paper box. The paper box is mounted on the paper gluing moving worktable via a rotating shaft. A paper gluing cylinder drives the paper gluing moving worktable to reciprocate along a third guide rail. A paper box cylinder drives the paper box to rotate reciprocally.

[0023] In the paper-straightening mechanism: preferably, the working surface of the arc-shaped piece that contacts the fireworks tube is provided with a flexible layer.

[0024] Preferably, the sleeve opening is a conical opening.

[0025] Preferably, an elastic buffer assembly is provided between the fourth linear reciprocating drive mechanism and the arc-shaped plate.

[0026] Preferably, the paper-straightening mechanism includes a paper-straightening moving seat whose position can be adjusted along the fourth guide rail. The paper-straightening moving seat is equipped with a paper-straightening cylinder and a paper-straightening moving worktable. The paper-straightening cylinder drives the paper-straightening moving worktable to move back and forth along the fifth guide rail. A wall panel is fixedly mounted on the paper-straightening moving worktable. Several arc-shaped plate cylinders are fixedly mounted on the wall panel according to the number and position of the arc-shaped plates. The piston rod of the arc-shaped plate cylinder is connected to the arc-shaped plate through an elastic buffer assembly.

[0027] The application of the end-face sealing device of the firework tube in confetti cannons.

[0028] The end-face sealing device of the firework tube is used in firework packaging tubes, firework launching tubes, and firework effect tubes.

[0029] The advantages of this invention are that it automatically completes the end-face sealing process of fireworks tubes; the operation is reliable and efficient; the process decomposition and distribution are reasonable, the processing actions are simple and gentle, effectively ensuring safe production; and it can be suitable for sealing fireworks tubes of various specifications.

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] It should be noted that when one element is considered to be connected to another element, it can be directly connected to the other element or there may be an intervening element present.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Attached Figure Description

[0033] Figure 1 This is a top view of the overall structure of the end-face sealing device for a fireworks tube.

[0034] Figure 2 This is a schematic diagram illustrating the structural principle of the conveyor belt and the fixing fixture.

[0035] Figure 3 This is a schematic diagram of the structure of the fixing fixture;

[0036] Figure 4A schematic diagram of the positioning plate for fixing the fixture;

[0037] Figure 5 This is a schematic diagram of the intermittent position locking mechanism;

[0038] Figure 6 This is a schematic diagram of the overall structure of the gluing mechanism (in working condition);

[0039] Figure 7 This is a schematic diagram of the overall structure of the gluing mechanism (in maintenance mode);

[0040] Figure 8 This is a schematic diagram of the rotating glue container (without the glue cylinder installed);

[0041] Figure 9 This is a schematic diagram of the rotating glue container (with the glue inlet cylinder installed);

[0042] Figure 10 This is a schematic diagram of the adhesive applicator (without the cover layer installed);

[0043] Figure 11 This is a schematic diagram of the adhesive applicator (with a cover layer installed);

[0044] Figure 12 This is a schematic diagram illustrating the working principle of the glue tube and the fireworks tube.

[0045] Figure 13 This is a schematic diagram of the overall structure of the adhesive paper mechanism (including a partial perspective view of the paper box);

[0046] Figure 14 for Figure 13 The diagram shows the structure along direction A.

[0047] Figure 15 This is a schematic diagram of the overall structure of the paper-straightening mechanism;

[0048] Figure 16 for Figure 15 The diagram shows the structure along direction B.

[0049] Figure 17 An enlarged schematic diagram of the connection structure between the arc-shaped plate cylinder, the elastic buffer assembly, and the arc-shaped plate;

[0050] Figure 18 This is a schematic diagram of the arc-shaped sheet structure;

[0051] Figure 19 This is a schematic diagram of a rotating glue tank equipped with a magnetic reluctance turbulence assemblies. Detailed Implementation

[0052] Referring to the accompanying drawings, a specific device for applying this invention is illustrated. In the end-face sealing device of the fireworks tube, the fireworks tube is the object being processed. A fireworks tube refers to a fireworks product or component with a cylindrical or prismatic shape. Classified by function, it includes, but is not limited to, packaging tubes, launch tubes, and effect tubes. Product classifications cover types such as spray fireworks, rotating fireworks, aerial fireworks, display fireworks, sparkler fireworks, toy fireworks, frame fireworks, combination fireworks, and confetti fireworks. The fireworks tubes of this invention particularly include packaging tubes, launch tubes, and effect tubes for confetti fireworks, whether powered by compressed air or gunpowder.

[0053] The encapsulation refers to attaching wrapping paper to both ends of the firework tube, with the middle portion of the wrapping paper covering the end face of the firework tube and the periphery of the wrapping paper attached to the side wall of the firework tube near the end face. The wrapping paper can be made of paper, plastic, film, composite materials, etc.

[0054] The device includes a conveyor belt 2 for the fireworks tube 1, and a gluing mechanism 3, a paper-adhesive mechanism 4, and a paper-straightening mechanism 5 arranged sequentially along the conveyor belt 2, all mounted on a frame 6. In this example, two sets of gluing mechanisms 3, paper-adhesive mechanisms 4, and paper-straightening mechanisms 5 are symmetrically distributed on both sides of the conveyor belt 2. During the intervals of the conveyor belt 2's movement, gluing, paper-adhesive, and paper-straightening sealing operations are performed simultaneously on both ends of the fireworks tube 1 to improve work efficiency.

[0055] The conveyor belt 2 is equipped with an intermittent stepping drive mechanism. This drive mechanism, such as a stepper motor, electric or pneumatic rocker arm, or any known method or mechanism capable of driving the traction component of the conveyor belt 2 to perform intermittent rotational motion, is applicable to this invention. In this embodiment, the conveyor belt 2 is composed of four parallel sprockets 203 and a chain 208. The intermittent stepping drive mechanism 206 drives the traction component of the conveyor belt 2—the sprockets 203—to perform intermittent rotational motion via a drive shaft 205. The sprockets 203 drive the fixed clamps mounted on the chain 208 to perform intermittent stepping motion.

[0056] The conveyor belt 2 is also equipped with an intermittent position locking mechanism, such as Figure 1 , 5 As shown, in this example, the mechanism uses a locking cylinder 202: during the interval of the conveyor belt 2 stepping, the locking cylinder 202 is activated, and the cylinder piston rod is inserted into the spoke hole 204 of the sprocket 203 to ensure that the conveyor belt remains stationary, which facilitates the accurate encapsulation work of each mechanism.

[0057] The conveyor belt 2 is fixedly distributed with twelve sets of fixing clamps for the firework tubes 1, such as Figure 1 As shown, six sets of fixtures are visible above the conveyor belt 2, each set of fixtures including two pairs of clamps 201; six are not visible below the conveyor belt 2 and are not shown in the figure.

[0058] like Figure 2 , 3 As shown in Figure 4, the fixing fixture consists of a first clamping body and a second clamping body arranged symmetrically. Each clamping body includes a clamping member 201 and a clamping seat. The clamping member 201 is fixed to the clamping seat. The clamping seat includes a base plate 212 and a positioning plate 211. The base plate 212 is fixed to the side curved plate of the chain link of the chain 208. The positioning plate 211 is provided with a waist-shaped hole 214 and a column 210. Bolts 213 connect the positioning plate 211 and the base plate 212 through the waist-shaped hole 214. The column 210 is connected to the base 207 through a buffer member—spring 209. The base 207 is fixed to the clamping member 201. In the straight section of the chain 208, the openings of the clamping members 201 of the first clamping body and the second clamping body are brought together to clamp the firework tube 1. In the rotating section of the chain 208, the openings of the clamping members 201 of the two clamping bodies are separated. At the starting point of the conveyor belt, the firework tube 1 to be processed is manually or automatically placed into the separate clamping openings. After entering the straight section, the openings move closer together to clamp the firework tube 1. It intermittently moves to each working mechanism to complete the corresponding processing. When it reaches the ending point of the conveyor belt, the processed firework tube 1 falls out of the separate clamping openings and into the collection mechanism below.

[0059] The clamping member 201 is an arc-shaped groove to fit the outer wall of the firework tube 1. Each clamping member 201 is provided with two parallel clamping seats. Each set of fixed clamps includes two pairs of clamping members 201. The number of clamping seats corresponds to the number of sprocket and chain assemblies. Each clamping seat is individually fixed to a link of the chain 208.

[0060] See Figure 6-12 The glue application mechanism 3 includes a glue application cylinder 301, which has an outer opening 302 facing the end of the firework tube 1 on the fixing fixture. The glue application cylinder 301 is disposed in the central hole 304 of the rotating glue tank 303, which connects to the inner cavity of the rotating glue tank 303 where glue is stored. The glue application cylinder 301 is frustum-shaped, with the larger end being the outer opening 302 and the smaller end being the inner opening 305 connecting to the inner cavity of the rotating glue tank. The inner opening 305 is closed by a covering layer 306, which is a structure through which glue can permeate, such as cloth or other fabrics with micropores. This allows the inner opening 305 to connect to the inner cavity of the rotating glue tank 303 through the covering layer 306, supplying glue to the glue application cylinder 301 and applying the glue to the end of the firework tube 1 through the covering layer and its inner wall.

[0061] The central hole 304 located within the inner cavity of the rotating glue container 303 is provided with a toothed collar consisting of three sparse teeth 307. The inner opening 305 and outer wall of the upper glue cylinder 301 are wrapped by a covering layer 306 and nested within the central hole 304 and the toothed collar. This effectively increases the contact area between the covering layer 306 and the glue, thereby adsorbing and transferring the glue to the glue application surface of the covering layer (i.e., the covering layer 306 at the inner opening 305).

[0062] The gluing mechanism includes a gluing movable seat 308 whose position can be adjusted along the first guide rail 317, so as to adjust the position of the gluing mechanism according to the length of the firework tube 1. The gluing movable seat 308 is equipped with a gluing cylinder 309 and a gluing movable worktable 318. A support plate is fixedly mounted on the gluing movable worktable 318. The support plate is divided into a fixed part 310 and a swing part 311. The swing part 311 is hinged to the fixed part 310 via a hinge 312. The rotating glue tank 303 and its drive motor 313 are mounted on the swing part 311. The rotating glue tank 303 is equipped with an openable sealing end cap 314, and a central hole 304 is located at the center of the sealing end cap 314. In the working state, the swing part 311 lies flat—as shown in the image. Figure 6 As shown; in the maintenance state, the swinging part 311 swings upward along the hinge 312 and stands upright on the pad 315—as shown. Figure 7 As shown, this allows for easy opening of the sealed end cap 314 to add or clean the adhesive inside the container.

[0063] In this example, the first linear reciprocating drive mechanism is a glue-applying cylinder 309; the rotary drive mechanism is a drive motor 313.

[0064] The gluing cylinder 309 drives the gluing moving worktable to reciprocate along the second guide rail 316, indirectly causing the rotating glue tank 303 and its gluing cylinder 301 to move toward the firework tube 1 on the fixed fixture, so that the end of the firework tube 1 is inserted into the outer opening 302 of the gluing cylinder 301 and contacts the covering layer 306 at the inner opening 305; then, the drive motor 313 drives the rotating glue tank 303 and its gluing cylinder 301 to rotate once, so that the firework tube 1 and the gluing cylinder 301 rotate relative to each other, and the glue is gently and reliably applied to the end and outer wall of the firework tube 1 through the covering layer 306 and the inner wall of the gluing cylinder 301. Then the gluing cylinder 309 drives the mechanism to reset, and the conveyor belt steps to transport the glued firework tube 1 to the paper-sticking mechanism 4.

[0065] The rotation of the rotary glue can causes centrifugal circulation of the glue within its cavity. When the glue is consumed to a certain extent, this centrifugal circulation causes the glue to move away from the central glue applicator, potentially leading to insufficient glue supply to the cover layer. Therefore, in other embodiments, the rotary glue can is equipped with a magnetic reluctance flow turbulence assembly, such as... Figure 19As shown, the device includes a metal turbulence ball 602 placed inside the rotating glue container 601, and an electromagnet 603 installed at the top of the rotating glue container 601. The base 605 of the electromagnet 603 is fixed to the drive motor 604 and is not connected to the rotating glue container 601. The electromagnet 603 does not rotate with the rotating glue container 601 and is always positioned at the highest point at the top of the rotating glue container 601. When the electromagnet 603 is not energized, the metal turbulence ball 602 can still generate a certain turbulence effect as the glue flows, increasing the glue supply on the cover layer of the glue cylinder 606. When the electromagnet 603 is energized, the metal turbulence ball 602 is decelerated and stopped by the magnetic field, blocking the glue circulation and causing the glue to fall towards the center area by gravity, greatly increasing the glue supply on the cover layer of the glue cylinder.

[0066] The paper-sticking mechanism 4 includes a paper box 402 containing a stack of packaging paper 401. The paper box 402 has an opening 403 facing the end of the firework tube 1 on the fixed clamp. An elastic paper-pushing assembly is provided inside the paper box 402. The elastic paper-pushing assembly includes a pusher plate 404, which is fixed to one end of a pusher shaft 405. The other end of the pusher shaft 405 is connected to a handle 406, which is located outside the paper box 402 for easy manual pulling of the pusher shaft 405 to add packaging paper. The pusher shaft 405 is mounted on the paper-sticking moving worktable 408 via a positioning bushing 407. A spring 409 is fitted onto the pusher shaft 405 inside the paper box 402. The paper box 402 is mounted on the paper-sticking moving worktable 408 via a rotating shaft 410. The elastic paper-pushing assembly pushes the stack of packaging paper 401 toward the opening 403.

[0067] The cardboard box 402 is equipped with a second linear reciprocating drive mechanism—a paper-adhesive cylinder 412. The paper-adhesive cylinder 412 drives the paper-adhesive moving worktable 408 to move along the third guide rail 413 toward the firework tube 1, so that the end of the glued firework tube 1 is inserted into the opening 403 of the cardboard box 402 to adhere the packaging paper. At this time, the rotation drive mechanism of the cardboard box 402—the cardboard box cylinder 414—is activated, driving the cardboard box 402 to rotate through the hanging ear 415, so that the firework tube 1 and the cardboard box 402 rotate relative to each other, improving the reliability of the packaging paper adhesion. Then, the paper-adhesive cylinder 412 and the cardboard box cylinder 414 sequentially drive the mechanism to reset, and the conveyor belt steps to transport the paper-adhesive firework tube 1 to the paper-straightening mechanism 5.

[0068] The paper-straightening mechanism 5 includes a sleeve composed of four arc-shaped pieces 501, with the sleeve opening 502 facing the end of the firework tube 1 on the fixed clamp. The working surface of the arc-shaped pieces 501 in contact with the firework tube 1 is provided with a flexible layer 503 to safely increase the paper-straightening force. The sleeve opening 502 is tapered, making it easier for the firework tube 1 to enter the sleeve opening 502. The paper-straightening mechanism includes a paper-straightening moving seat 505 whose position can be adjusted along the fourth guide rail 504. The paper-straightening moving seat 505 is provided with a paper-straightening cylinder 506 and a paper-straightening moving worktable 507. The paper-straightening cylinder 506 drives the paper-straightening moving worktable 507 to move back and forth along the fifth guide rail 508. A wall panel 509 is fixedly mounted on the paper-straightening moving worktable 507, and the wall panel 509 is provided with a support frame 510. Four arc-shaped plate cylinders 511 are fixedly installed on the wall panel 510 at the positions corresponding to the arc-shaped plate 501. The piston rod 512 of the arc-shaped plate cylinder 511 is connected to the arc-shaped plate 501 through the elastic buffer assembly 513.

[0069] The third linear reciprocating drive mechanism of the sleeve—the paper-straightening cylinder 506—causes the end of the firework tube 1 and its attached packaging paper to be inserted into the sleeve accordingly. The fourth linear reciprocating drive mechanism of the arc-shaped plates—the arc-shaped plate cylinder 511—causes the four arc-shaped plates 501 to move radially along the sleeve to tighten the sleeve, ensuring that the periphery of the packaging paper is securely and reliably adhered to the side wall of the firework tube 1 near the end face. Then, the arc-shaped plate cylinder 511 resets and expands the sleeve to prevent the packaging paper from peeling off when the firework tube detaches from the sleeve. Then, the paper-straightening cylinder 506 drives the sleeve to reset. As the conveyor belt steps forward, it transports the paper-straightened firework tube 1 to the rotary section at the end of the conveyor belt. At this point, the processed firework tube 1 falls out of the opening of the separated clamping member 201 and into the collection mechanism below.

[0070] As can be seen from the above, this device can automatically complete the end-face sealing and packaging of fireworks tubes. The operation is simple, safe and reliable, and highly efficient, making it suitable for packaging fireworks tubes of various specifications.

[0071] The above-described implementation methods are merely for clearly illustrating the technical solution of the present invention and should not be construed as imposing any limitations on the present invention. The present invention has many known alternatives or modifications in this technical field, and all such modifications or modifications fall within the protection scope of the present invention without departing from its essential meaning.

Claims

1. An end-face sealing device for a fireworks tube, characterized in that, The system includes a conveyor belt for the fireworks tubes, and also includes a gluing mechanism, a paper-adhesive mechanism, and a paper-straightening mechanism arranged sequentially along the conveyor belt. Two sets of gluing, paper-adhesive, and paper-straightening mechanisms are symmetrically distributed on both sides of the conveyor belt. The conveyor belt is equipped with an intermittent stepping drive mechanism, and a number of fixing clamps for firework tubes are fixedly distributed on the conveyor belt; The gluing mechanism includes a gluing tube, which is connected to a glue supply mechanism. The gluing tube has an outer opening facing the end of the firework tube on the fixing fixture. The gluing tube is equipped with a first linear reciprocating drive mechanism, which causes the end of the firework tube to be inserted into the gluing tube. The paper-adhesive mechanism includes a paper box containing a stack of packaging paper, the paper box having an opening facing the end of a firework tube on a fixing clamp, the paper box having an elastic paper-pushing component that pushes the stack of packaging paper toward the opening, and the paper box having a second linear reciprocating drive mechanism that causes the end of the firework tube to be inserted into the opening of the paper box. The paper-straightening mechanism includes a sleeve composed of several arc-shaped pieces, with the sleeve opening facing the end of the firework tube on the fixed clamp. The sleeve is equipped with a third linear reciprocating drive mechanism, which causes the end of the firework tube to be inserted into the sleeve accordingly. The arc-shaped pieces are equipped with a fourth linear reciprocating drive mechanism, which causes the arc-shaped pieces to move back and forth radially along the sleeve. The glue-applying tube is equipped with a rotation drive mechanism, which causes the firework tube and the glue-applying tube to rotate relative to each other; the cardboard box is equipped with a rotation drive mechanism, which causes the firework tube and the cardboard box to rotate relative to each other.

2. The apparatus as claimed in claim 1, characterized in that, The fixing fixture consists of a first clamping body and a second clamping body. Each clamping body includes a clamping element and a clamping seat. The clamping seat is fixed on the conveyor belt, and the clamping element is fixed on the clamping seat by a buffer element. In the straight section of the conveyor belt, the openings of the clamping elements of the two clamping bodies are brought together to clamp the firework tube. In the rotating section of the conveyor belt, the openings of the clamping elements of the two clamping bodies are separated.

3. The apparatus as described in claim 1 or 2, characterized in that, The glue-applying cylinder is disposed in the central hole of the rotating glue can, which is connected to the inner cavity of the rotating glue can storing glue. The glue-applying cylinder is frustum-shaped, with the larger end being the external opening and the smaller end being the internal opening connecting to the inner cavity of the rotating glue can. The internal opening is sealed by a covering layer, which is a structure through which glue can permeate.

4. The apparatus as described in claim 3, characterized in that, The central hole located within the inner cavity of the rotating glue can is provided with a toothed collar, and the inner opening and outer wall of the upper glue cylinder are wrapped by a covering layer and nested within the central hole and the toothed collar.

5. The apparatus according to any one of claims 1, 2, and 4, characterized in that, The elastic paper pusher assembly includes a paper pusher plate, one end of which is fixedly connected to a paper pusher shaft. The other end of the paper pusher shaft is connected to a handle, which is located outside the paper box. The paper pusher shaft is mounted on the paper gluing moving worktable via a positioning bushing. A spring is fitted on the paper pusher shaft inside the paper box. The paper box is mounted on the paper gluing moving worktable via a rotating shaft. A paper gluing cylinder drives the paper gluing moving worktable to move back and forth along a third guide rail. A paper box cylinder drives the paper box to rotate reciprocally.

6. The apparatus according to any one of claims 1, 2, and 4, characterized in that, The working surface of the arc-shaped piece that contacts the fireworks tube is provided with a flexible layer.

7. The apparatus according to any one of claims 1, 2, and 4, characterized in that, The paper-straightening mechanism includes a paper-straightening moving seat whose position can be adjusted along the fourth guide rail. The paper-straightening moving seat is equipped with a paper-straightening cylinder and a paper-straightening moving worktable. The paper-straightening cylinder drives the paper-straightening moving worktable to move back and forth along the fifth guide rail. A wall panel is fixedly mounted on the paper-straightening moving worktable. Several arc-shaped plate cylinders are fixedly mounted on the wall panel according to the number and position of the arc-shaped plates. The piston rod of the arc-shaped plate cylinder is connected to the arc-shaped plate through an elastic buffer assembly.

8. The application of the end-face sealing device of the fireworks tube as described in claim 1 in confetti cannons, fireworks packaging tubes, fireworks launch tubes, and fireworks effect tubes.

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