Fireworks and firecrackers paper tube forming device

Abstract

The present invention belongs to the field of fireworks equipment, and provides a fireworks paper tube forming device, comprising a feeding mechanism, a cutting mechanism and a forming mechanism arranged in sequence, the feeding mechanism comprising a material rack for placing raw material coils and a paper feeding rack for feeding paper, the paper feeding rack is provided with a plurality of relatively arranged active paper feeding rollers and passive paper feeding rollers, the cutting mechanism is arranged at the end of the paper feeding rack, and is used to cut the paper tape; the forming mechanism comprises an active forming roller, a passive forming roller, a tension roller, a material tape and a mandrel, the active forming roller and the passive forming roller are arranged relatively, the tension roller and the active forming roller are arranged at intervals, the material tape is sleeved on the outer surfaces of the active forming roller, the passive forming roller and the tension roller, the mandrel is arranged between the active forming roller and the passive forming roller, the mandrel makes the material tape form an arc bend between the active forming roller and the passive forming roller, and the forming mechanism also comprises a tension adjustment component connected to the tension roller in a transmission manner. The device has a simple and compact structure, high working efficiency and reduces the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to the field of fireworks equipment, and in particular to a fireworks paper tube forming device. Background Art

[0002] Current fully automatic firework reel machines all use two upper and lower conveyor belts plus a reel core shaft to form the rotating cylinder. During forming, one end of the paper tape is connected to the core shaft, and then the core shaft is placed between the two conveyor belts. The core shaft rotates between the two conveyor belts, driving the paper tape to rotate around the core shaft, thus forming a paper tube.

[0003] Due to the raw materials, the thickness between each roll of paper tape, and even the thickness at different positions of the same roll of paper tape, is different. In order to ensure the molding quality of the paper tape, it is necessary to adjust the distance between the upper and lower conveyor belts according to the actual situation. The adjustment of this distance is difficult to quantify and is generally adjusted manually by experienced operators, resulting in high labor intensity, low work efficiency and high labor cost investment.

[0004] In addition, since the paper tube size of each type of fireworks is different, the size of the paper tube is related not only to the thickness of the paper tape, but also to the length of the paper tape. In order to be compatible with more types of paper tubes, the upper and lower conveyor belts need to be made to be able to produce the length of the largest paper tube. This will inevitably make the overall size of the equipment longer, which means that the equipment occupies a large area, resulting in a large investment in factory area, which further increases the cost investment.

[0005] The technical problem to be solved by the present application is: how to solve the problems of the existing fireworks and firecracker paper tube production equipment having a complex structure, a large volume, low working efficiency and high labor intensity for workers. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a fireworks and firecracker paper tube forming device, which has the advantages of simple and compact structure, high working efficiency and reduced labor intensity of workers.

[0007] The technical solution adopted by the present invention is:

[0008] A fireworks and firecracker paper tube forming device comprises a feeding mechanism, a cutting mechanism and a forming mechanism which are arranged in sequence, the feeding mechanism comprises a material rack for placing a raw material coil and a paper feeding rack for feeding paper, the paper feeding rack is provided with a plurality of active paper feeding rollers and passive paper feeding rollers which are arranged oppositely, and the cutting mechanism is arranged at the end of the paper feeding rack for cutting the paper tape;

[0009] The forming mechanism includes an active forming roller, a passive forming roller, a tension roller, a material belt and a core shaft. The active forming roller and the passive forming roller are arranged opposite to each other, the tension roller and the active forming roller are arranged at intervals, the inner side surface of the material belt is sleeved on the outer surfaces of the active forming roller, the passive forming roller and the tension roller, the core shaft is arranged between the active forming roller and the passive forming roller, the outer side surface of the material belt is wound around the outer surface of the core shaft, and the core shaft makes the material belt form an arc bend between the active forming roller and the passive forming roller. The forming mechanism also includes a tension adjustment component that is transmission-connected to the tension roller, and the tension adjustment component is used to adjust the center distance between the tension roller and the active forming roller in real time.

[0010] The fireworks and firecracker paper tube forming device of the present application sets the core shaft in the arc bend of the material strip between the active forming roller and the passive forming roller, and uses the active forming roller to drive the material strip to rotate, thereby driving the core shaft to rotate, so that the paper strip rotates on the surface of the core shaft to form a paper tube. This can simplify the structure of the forming device, greatly reducing the volume of the forming device while ensuring versatility; and by using the tension adjustment component to adjust the center distance between the tension roller and the active forming roller, the tensioning force of the material strip can be adjusted in real time, ensuring the quality of paper tube forming, while also reducing the labor intensity of operators and improving the efficiency of paper tube production.

[0011] In some embodiments, the forming mechanism further comprises a forming frame, the active forming roller and the passive forming roller are rotatably connected to the forming frame, a forming power member transmission-connected to the active forming roller is mounted on the forming frame, and the tension roller is movably connected to the forming frame.

[0012] By adopting the above technical solution, the forming frame improves the installation foundation for the active forming roller, the passive forming roller, the tension roller and the forming power part, and the forming power part is used to drive the active forming roller to rotate and provide power for the paper roll forming.

[0013] In some embodiments, the tension adjustment assembly includes a servo motor installed on the forming frame, a synchronous shaft connected to the output shaft of the servo motor, and a swing arm swingably connected to the forming frame, the synchronous shaft is rotationally connected to the forming frame, and there are driving gears at both ends of the synchronous shaft. The swing arm is rotationally connected to both ends of the tension roller, and a transmission tooth meshing with the driving gear is provided at one end of the swing arm close to the driving gear.

[0014] By adopting the above technical solution, the constant output torque characteristic of the servo motor is utilized to detect the tension on the tension roller in real time, which is then fed back to the servo motor and outputs appropriate power to keep the material belt at a preset tension. The driving gear is used to transmit the power to the swing arm, and the self-locking characteristic of the gear is utilized to avoid the tension roller from jumping freely during operation, thereby further ensuring the stability of the material belt tension.

[0015] In some embodiments, the cutting mechanism includes a cutting frame, a cutting power member, a cutting knife seat, a cutter and a paper pressing member. The cutting frame is installed at one end of the paper feeding frame away from the material frame, the cutting power member is installed on the cutting frame, the cutting knife seat is slidably connected to the cutting frame, the cutting knife seat is transmission-connected to the cutting power member, the cutter is installed on the cutting knife seat, the paper feeding frame is provided with a supporting plate directly below the cutting mechanism, the supporting plate is provided with a slit corresponding to the cutter, and the paper pressing member is floatingly connected to the side of the cutting knife seat close to the forming mechanism.

[0016] By adopting the above technical solution, the cutting knife seat and the cutter are pressed down by the cutting power member, and the slit on the supporting plate can ensure that the cutter can completely penetrate the paper tape and prevent the cutter from colliding with the supporting plate and causing damage to the cutter. The paper pressing member cooperates with the supporting plate to keep the paper tape in a taut state, so that the cutter can penetrate the paper tape easily.

[0017] In some embodiments, a slider is provided on the paper pressing member, and a slide rail that slides with the slider is provided on the cutting knife seat. The length extension direction of the slide rail is consistent with the moving direction of the cutter. An elastic member is provided between the paper pressing member and the cutting knife seat, and the compression direction of the elastic member is consistent with the moving direction of the cutter.

[0018] By adopting the above technical solution, the elastic member can provide a buffer when the paper pressing member contacts the paper tape, avoiding the hard contact between the paper pressing member and the supporting plate, which may cause the paper tape to wrinkle or break, thereby ensuring the cutting effect of the paper tape.

[0019] In some embodiments, a gluing mechanism is further included, which includes a gluing plate arranged on the side of the cutter close to the paper pressing member and a glue tray arranged below the gluing plate, and a high-elastic sponge is arranged on the glue tray, and the high-elastic sponge is located directly below the glue tray.

[0020] By adopting the above technical solution, the high-elastic sponge can evenly absorb glue on its surface, increase the contact area between glue and paper tape, and provide a buffer when the paper tape is pressed down. While cutting the paper tape, the upper glue plate presses the paper tape onto the high-elastic sponge on the glue tray, so that the surface of the paper tape can be coated with an appropriate amount of glue, while preventing the part of the paper tape that contacts the glue from breaking.

[0021] In some embodiments, a stripping mechanism is further included and arranged at one end of the forming mechanism. The stripping mechanism includes a stripping frame, a stripping cylinder and a stripping power piece. One end of the core shaft is limitedly connected to the stripping frame, the stripping cylinder is sleeved on the outer surface of the core shaft, and the stripping cylinder is slidably connected to the stripping frame. The stripping power piece drives the stripping cylinder to reciprocate along the axial direction of the core shaft to separate the formed paper tube from the core shaft.

[0022] By adopting the above technical solution, cyclic production can be achieved by equipping a core shaft, which is beneficial to improving production efficiency.

[0023] In some embodiments, the stripping mechanism further includes a first floating assembly connected to the mandrel and a second floating assembly connected to the stripping barrel;

[0024] The first floating assembly includes a first guide wheel, a first weight and a first traction rope, wherein the first guide wheel is installed on the stripping frame, the first traction rope is wound around the first guide wheel, and one end of the first traction rope is connected to the core shaft, and the other end is connected to the first weight;

[0025] The second floating assembly includes a supporting member, a second guide wheel, a second weight and a second traction rope. The supporting member slides in the vertical direction to set an active forming roller close to one end of the supporting frame, and the supporting member supports the stripping cylinder. The second guide wheel is set on one side of the supporting member, the second traction rope is wound around the second guide wheel, and the two ends of the second traction rope are respectively connected to the supporting member and the second weight.

[0026] By adopting the above technical solution, the first floating component and the second floating component can make the core shaft jump up and down during the working process, so that the height of the core shaft matches the thickness of the paper tube forming process, thereby ensuring the effect of paper tube forming, and when the paper tape is not in contact with the core shaft, the core shaft can be separated from the material tape to facilitate the paper tape to enter the arc bend of the material tape and come into contact with the core shaft.

[0027] In some embodiments, it also includes a paper pressing mechanism arranged between the paper feeding rack and the forming mechanism, the paper pressing mechanism includes a paper pressing rack, a paper pressing active roller, a swing shaft and a paper guide, the paper pressing rack is arranged at one end of the paper feeding rack close to the forming mechanism, the paper pressing active roller is rotatably connected to the paper pressing rack, a paper feeding power component is installed on the paper feeding rack, the paper feeding power component is transmission-connected to the active paper feeding roller and the paper pressing active roller, the swing shaft is arranged above the paper pressing active roller, the number of paper guides is several, each paper guide is arranged at intervals along the axial direction of the swing shaft, and each paper guide is arranged opposite to the paper pressing active roller.

[0028] By adopting the above technical solution, the paper pressing mechanism can keep the paper tape straight when entering the forming mechanism, and can also play a guiding role, so that the paper tape can smoothly enter the forming mechanism from the paper feeding rack.

[0029] In some embodiments, the feeding mechanism also includes a buffer rack arranged near one end of the paper feeding rack, the buffer rack is provided with at least two fixed shafts and a buffer shaft, the fixed shaft is rotationally connected to the buffer rack, the buffer shaft is arranged between two adjacent fixed shafts, and the buffer shaft is floatingly connected to the buffer rack.

[0030] By adopting the above technical solution, the buffer rack can provide a buffer for the paper tape when feeding, so as to prevent the paper tape from being too tight and breaking, or too loose and wrinkling when temporarily stopping or replacing the paper tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic diagram of the overall structure of a fireworks and firecracker paper tube forming device according to a preferred embodiment of the present invention;

[0032] Figure 2 for Figure 1 Another perspective structural diagram of the fireworks and firecracker paper tube forming device shown;

[0033] Figure 3 for Figure 1 The structural schematic diagram of the paper feeding rack, buffer rack, cutting mechanism, gluing mechanism, paper pressing mechanism and forming mechanism in the fireworks and firecracker paper tube forming device shown;

[0034] Figure 4 for Figure 3 The schematic diagram of the cross-section structure of the paper feeding rack, buffer rack, cutting mechanism, gluing mechanism, paper pressing mechanism and forming mechanism along the AA line is shown;

[0035] Figure 5 for Figure 4 An enlarged schematic diagram of the structure at B is shown;

[0036] Figure 6 for Figure 4 An enlarged schematic diagram of the structure at C is shown;

[0037] Figure 7 for Figure 3 The schematic diagram of the structure of the cutting mechanism, gluing mechanism and paper pressing mechanism shown;

[0038] Figure 8 for Figure 7 A schematic diagram of the structure of a cutter in a cutting mechanism shown;

[0039] Fig. 9 for Figure 3 The structural schematic diagram of the forming mechanism shown;

[0040] Fig.10 for Figure 2 The structural schematic diagram of the stripping mechanism is shown.

[0041] In the figure: 100, fireworks and firecracker paper tube forming device; 10, feeding mechanism; 11, material rack; 12, paper feeding rack; 13, active paper feeding roller; 14, passive paper feeding roller; 15, paper feeding power member; 16, buffer rack; 17, fixed shaft; 18, buffer shaft; 20, cutting mechanism; 21, cutting rack; 22, cutting power member; 23, cutting knife seat; 24, cutter; 25, paper pressing member; 26, supporting plate; 261, slit; 27, elastic member; 30, forming mechanism; 31, active forming roller; 32, passive forming roller; 33, tension roller; 34, material belt; 35, core shaft; 36, forming rack; 37, tension adjustment assembly; 371, servo motor; 372, synchronous shaft; 373, swing arm; 374, active Gear; 375, transmission tooth; 38, forming power part; 40, gluing mechanism; 41, gluing plate; 42, glue tray; 43, high-elastic sponge; 50, stripping mechanism; 51, stripping rack; 52, stripping cylinder; 53, stripping power part; 54, first floating component; 541, first guide wheel; 542, first weight; 543, first traction rope; 55, second floating component; 551, supporting part; 552, second guide wheel; 553, second weight; 554, second traction rope; 60, paper pressing mechanism; 61, paper pressing rack; 62, paper pressing active roller; 621, paper pressing lower guide wheel; 63, swing shaft; 64, paper guide; 641, upper paper pressing board; 642, paper pressing upper guide wheel; 65, lower paper pressing board; 70, frame. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central 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 a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] See also Figures 1 to 10 , which is a fireworks and firecracker paper tube forming device 100 of a preferred embodiment of the present invention, includes a feeding mechanism 10, a cutting mechanism 20 and a forming mechanism 30 arranged in sequence, the feeding mechanism 10 includes a material rack 11 for placing raw material coils and a paper feeding rack 12 for feeding paper, and the paper feeding rack 12 is provided with a plurality of relatively arranged active paper feeding rollers 13 and passive paper feeding rollers 14, the cutting mechanism 20 is arranged at the end of the paper feeding rack 12, and is used to cut the paper tape, and the forming mechanism 30 is arranged on the side of the cutting mechanism 20 away from the feeding mechanism 10, and is used to roll the paper tape into a paper tube.

[0046] Furthermore, due to the problem of paper tape raw materials, the paper tape may have different thicknesses. In order to ensure that the passive paper feed roller 14 maintains contact with the paper tape, the passive paper feed roller 14 is connected to the paper feed frame 12 in a floating manner; specifically, Figure 4 As shown, sliders slidably connected to the paper feed rack 12 are rotatably provided at both ends of the passive paper feed roller, and a compression spring is provided at one end of the slider away from the active paper feed roller 13. The compression spring can provide pressure for the passive paper feed roller 14 toward the active paper feed roller 13 and provide a buffer for the passive paper feed roller 14 to prevent the passive paper feed roller 14 from being overly stressed and causing the paper tape to break.

[0047] Please also read Figure 4 , Figure 5 and Figure 7 The cutting mechanism 20 includes a cutting frame 21, a cutting power member 22, a cutting knife seat 23, a cutter 24 and a paper pressing member 25. The cutting frame 21 is installed at one end of the paper feeding frame 12 away from the material frame 11, the cutting power member 22 is installed on the cutting frame 21, the cutting knife seat 23 is slidably connected to the cutting frame 21, the cutting knife seat 23 is transmission-connected to the cutting power member 22, the cutter 24 is installed on the cutting knife seat 23, the paper feeding frame 12 is provided with a supporting plate 26 directly below the cutting mechanism 20, and the supporting plate 26 is provided with a slit 261 corresponding to the cutter 24, and the paper pressing member 25 is floatingly connected to the side of the cutting knife seat 23 close to the forming mechanism 30.

[0048] Specifically, a slider is provided on the paper pressing member 25, and a slide rail that slides with the slider is provided on the cutting knife seat 23. The length extension direction of the slide rail is consistent with the moving direction of the cutter 24. An elastic member 27 is provided between the paper pressing member 25 and the cutting knife seat 23, and the compression direction of the elastic member 27 is consistent with the moving direction of the cutter 24.

[0049] In this embodiment, the cutting power member 22 is a motor, the output shaft of the cutting power member 22 is rotatably connected to a cam, and the cam is rotatably connected to the cutting knife seat 23, the rotational motion of the cutting power member 22 is transmitted to the cutting knife seat 23 through the cam and converted into a linear reciprocating motion of the cutting knife seat 23, thereby driving the cutter 24 to reciprocate up and down to cut the paper tape, and the length of each cut paper tape can be changed by controlling the rotation speed of the cutting power member 22. In other embodiments, an oil cylinder or a pneumatic cylinder can also be used as the cutting power member 22.

[0050] Preferably, if Figure 8 As shown, a plurality of notches are provided at intervals on the cutting edge of the cutter 24, so that when the cutter 24 penetrates the paper tape, the paper tape is not directly cut off, but a plurality of through holes are formed at intervals in the width direction of the paper tape. The paper tape is then pulled apart by the pulling force of the feeding mechanism 10 and the forming mechanism 30, so that the cut of the paper tape forms a regular or irregular serrated shape, which is conducive to preventing the edge sealing of the paper tube from warping after the paper tube is formed, and making the edge sealing of the paper tube more fitting.

[0051] Please refer to Figure 4 and Figure 6 The forming mechanism 30 includes an active forming roller 31, a passive forming roller 32, a tension roller 33, a material belt 34 and a core shaft 35. The active forming roller 31 is arranged opposite to the passive forming roller 32, the tension roller 33 is arranged at an interval with the active forming roller 31, the inner side surface of the material belt 34 is sleeved on the outer surfaces of the active forming roller 31, the passive forming roller 32 and the tension roller 33, the core shaft 35 is arranged between the active forming roller 31 and the passive forming roller 32, the outer side surface of the material belt 34 is wound around the outer surface of the core shaft 35, and the core shaft 35 makes the material belt 34 form an arc bend between the active forming roller 31 and the passive forming roller 32. The forming mechanism 30 also includes a tension adjustment component 37 which is transmission-connected to the tension roller 33, and the tension adjustment component 37 is used to adjust the center distance between the tension roller 33 and the active forming roller 31 in real time.

[0052] Furthermore, the forming mechanism 30 further includes a forming frame 36, the forming frame 36 is connected to the paper feeding frame 12 via a frame 70, the active forming roller 31 and the passive forming roller 32 are rotatably connected to the forming frame 36, a forming power member 38 drivingly connected to the active forming roller 31 is installed on the forming frame 36, and the tension roller 33 is movably connected to the forming frame 36. Preferably, the forming power member 38 is a servo motor 371.

[0053] like Fig. 9As shown, in this embodiment, the tension adjustment assembly 37 includes a servo motor 371 installed on the forming frame 36, a synchronous shaft 372 connected to the output shaft of the servo motor 371, and a swing arm 373 swingably connected to the forming frame 36, the synchronous shaft 372 is rotationally connected to the forming frame 36, and driving gears 374 are provided at both ends of the synchronous shaft 372. The swing arm 373 is rotationally connected to the two ends of the tension roller 33, and a transmission tooth 375 meshing with the driving gear 374 is provided at one end of the swing arm 373 close to the driving gear 374.

[0054] In other embodiments, a tension sensor can be provided to detect the tension of the material belt 34. In conjunction with a self-locking oil cylinder, a self-locking air cylinder or a motor, the tension sensor transmits the detection result to the controller, and the controller then controls the self-locking oil cylinder, the self-locking air cylinder or the motor to adjust the position of the tension roller 33, thereby dynamically adjusting the tension of the material belt 34 and ensuring the quality of paper tube forming.

[0055] like Figure 4 and Figure 5 As shown, the paper tube forming device further includes a gluing mechanism 40, which includes a gluing plate 41 disposed on the side of the cutter 24 close to the paper pressing member 25 and a glue tray 42 disposed below the gluing plate 41, on which a high-elastic sponge 43 is disposed, and the high-elastic sponge 43 is located directly below the glue tray 42. This arrangement can apply a proper amount of glue to the cut of the paper tape while cutting the paper tape, thereby improving the working efficiency of the paper tube forming.

[0056] In order to facilitate the falling off of the formed paper tube from the core shaft 35, the paper tube forming device also includes a stripping mechanism 50 arranged at one end of the forming mechanism 30, the stripping mechanism 50 includes a stripping frame 5111, a stripping cylinder 52 and a stripping power member 53, one end of the core shaft 35 is limitedly connected to the stripping frame 5111, the stripping cylinder 52 is sleeved on the outer surface of the core shaft 35, and the stripping cylinder 52 is slidably connected to the stripping frame 5111, and the stripping power member 53 drives the stripping cylinder 52 to move back and forth along the axial direction of the core shaft 35 to make the formed paper tube fall off the core shaft 35. In this embodiment, the stripping power part 53 is a motor, and a slide is slidably arranged on the stripping frame 5111. A clamping block engaged with the slide is arranged at the end of the stripping cylinder 52 away from the forming mechanism 30. The stripping power part 53 is connected to the slide through a transmission belt. In order to avoid the block and the slide from getting stuck, a spring is arranged between the block and the slide. In other embodiments, the stripping power part 53 can also be set as a cylinder or an oil cylinder, and the stripping cylinder 52 is driven by the oil cylinder or the cylinder to move, so as to push the formed paper tube on the core shaft 35 out of the core shaft 35.

[0057] Furthermore, the stripping mechanism 50 also includes a first floating assembly 54 connected to the core shaft 35 and a second floating assembly 55 connected to the stripping cylinder 52; the first floating assembly 54 includes a first guide wheel 541, a first weight 542 and a first traction rope 543, the first guide wheel 541 is installed on the stripping frame 5111, the first traction rope 543 is wound around the first guide wheel 541, and one end of the first traction rope 543 is connected to the core shaft 35, and the other end is connected to the first weight 542; the second The floating assembly 55 includes a supporting member 551, a second guide wheel 552, a second weight 553 and a second traction rope 554. The supporting member 551 slides along the vertical direction to set the active forming roller 31 close to one end of the supporting frame 11, and the supporting member 551 supports the stripping cylinder 52. The second guide wheel 552 is set on one side of the supporting member 551. The second traction rope 554 is wrapped around the second guide wheel 552, and the two ends of the second traction rope 554 are respectively connected to the supporting member 551 and the second weight 553.

[0058] Furthermore, in order to reduce the friction between the first traction rope 543 and the core shaft 35, a pulley is rotatably provided on the core shaft 35, and the first traction rope 543 is wound around the pulley; similarly, in order to reduce the friction between the stripping barrel 52 and the supporting member 551, a plurality of guide wheels are rotatably provided on the supporting member 551.

[0059] In order to enable the paper tape to better enter the forming mechanism 30, a paper pressing mechanism 60 is also arranged between the paper feeding rack 12 and the forming mechanism 30. The paper pressing mechanism 60 includes a paper pressing rack 61, a paper pressing active roller 62, a swing shaft 63 and a paper guide 64. The paper pressing rack 61 is arranged at one end of the paper feeding rack 12 close to the forming mechanism 30. The paper pressing active roller 62 is rotatably connected to the paper pressing rack 61. A paper feeding power member 15 is installed on the paper feeding rack 12. The paper feeding power member 15 is transmission-connected to the active paper feeding roller 13 and the paper pressing active roller 62. The swing shaft 63 is arranged above the paper pressing active roller 62. There are several paper guides 64. Each paper guide 64 is arranged at intervals along the axial direction of the swing shaft 63, and each paper guide 64 is arranged opposite to the paper pressing active roller 62. Optionally, the paper feeding power component 15 is a motor, and a plurality of paper feeding active rollers and a plurality of paper pressing active rollers 62 are driven to rotate by one paper feeding power component 15 at the same time, which can reduce the investment in power components and improve the synchronization between the paper feeding mechanism and the paper pressing mechanism 60.

[0060] like Figure 7As shown, a lower paper pressing guide wheel 621 is provided on the paper pressing active roller 62, and a plurality of lower paper pressing boards 65 are provided at intervals along the axial direction of the paper pressing active roller 62. Correspondingly, an upper paper pressing board 641 and an upper paper pressing guide wheel 642 are provided on the paper guide member 64. The upper paper pressing board 641 cooperates with the lower paper pressing board 65 to change the conveying direction of the paper tape, so that the connection between the paper feeding rack 12 and the forming rack 36 is smoother, and the upper paper pressing guide wheel 642 cooperates with the lower paper pressing guide wheel 621 to keep the paper tape flat and prevent the paper tape from wrinkling.

[0061] Preferably, the feeding mechanism 10 also includes a buffer rack 16 arranged at one end of the paper feeding rack 12 close to the material rack 11, and at least two fixed shafts 17 and one buffer shaft 18 are arranged on the buffer rack 16, the fixed shaft 17 is rotationally connected to the buffer rack 16, the buffer shaft 18 is arranged between two adjacent fixed shafts 17, and the buffer shaft 18 is floatingly connected to the buffer rack 16.

[0062] Furthermore, a guide shaft is provided on the buffer frame 16, and a sliding block is slidably provided on the guide shaft. The sliding block is rotationally connected to the buffer shaft 18, and the paper tape passes around the bottom of the buffer shaft 18, so that the buffer shaft 18 floats up and down according to the tension of the paper tape, thereby playing a buffering role.

[0063] In this embodiment, in order to better feed the materials, the material rack 11 is an automatic material rack 11.

[0064] The fireworks paper tube forming device 100 also includes a controller, which is used to control the coordinated operation of various mechanisms.

[0065] During operation, the rolled paper is first placed on the material rack 11, and the paper tape is led out and sequentially wound around the fixed shaft 17 and the buffer shaft 18 on the buffer rack 16, and passes between the active paper feeding roller 13 and the passive paper feeding roller 14; then the equipment is started, the paper feeding power member 15 drives the active paper feeding roller 13 and the paper pressing active roller 62 to rotate and introduce the paper tape into the forming mechanism 30, and the forming power member 38 drives the active forming roller 31 to rotate, and the active forming roller 31 drives the material tape 34 to rotate and drives the paper tape to rotate around the core shaft 35. After the paper tape is output to a preset length, the power member 22 drives the paper tape to rotate. The movable cutting knife seat 23 drives the cutter 24 to penetrate the paper tape, and at the same time the gluing plate 41 presses the paper tape to the high-elastic sponge 43 to complete the gluing. Under the pulling force of the forming mechanism 30 and the paper feeding mechanism, the paper tape breaks at the incision, and the active forming roller 31 continues to rotate, driving the paper tape to be wound and sealed to form a paper tube. After the paper tube is formed, the stripping power member 53 drives the stripping cylinder 52 to move toward the forming mechanism 30, and pushes the paper tube from the core shaft 35. Then the stripping power member 53 drives the stripping cylinder 52 to reset, completing the forming production of the paper tube, and repeating the above actions to carry out continuous production of paper tubes.

[0066] The fireworks and firecracker paper tube forming device 100 of the present application sets the core shaft 35 in the arc bend of the material belt 34 between the active forming roller 31 and the passive forming roller 32, and uses the active forming roller 31 to drive the material belt 34 to rotate, thereby driving the core shaft 35 to rotate, so that the paper belt rotates on the surface of the core shaft 35 to form a paper tube. This can simplify the structure of the forming device, greatly reducing the volume of the forming device while ensuring versatility; and by using the tension adjustment component 37 to adjust the center distance between the tension roller 33 and the active forming roller 31, the tensioning force of the material belt 34 can be adjusted in real time, ensuring the quality of paper tube forming, while also reducing the labor intensity of operators and improving the efficiency of paper tube production.

[0067] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fireworks paper tube forming device (100), comprising a feeding mechanism (10), a cutting mechanism (20) and a forming mechanism (30) arranged in sequence, wherein the feeding mechanism (10) comprises a material rack (11) for placing a raw material coil and a paper feeding rack (12) for feeding paper, wherein the paper feeding rack (12) is provided with a plurality of active paper feeding rollers (13) and passive paper feeding rollers (14) arranged opposite to each other, and the cutting mechanism (20) is arranged at the end of the paper feeding rack (12) for cutting a paper tape, characterized in that: The forming mechanism (30) comprises an active forming roller (31), a passive forming roller (32), a tension roller (33), a material belt (34) and a core shaft (35), wherein the active forming roller (31) and the passive forming roller (32) are arranged opposite to each other, the tension roller (33) and the active forming roller (31) are arranged at a distance, the inner side surface of the material belt (34) is sleeved on the outer surface of the active forming roller (31), the passive forming roller (32) and the tension roller (33), and the core shaft (35) is arranged on the active forming roller (31). The outer surface of the core shaft (35) is wound around the outer side surface of the material strip (34) between the active forming roller (31) and the passive forming roller (32), and the core shaft (35) causes the material strip (34) to form an arc bend between the active forming roller (31) and the passive forming roller (32). The forming mechanism (30) further includes a tension adjustment component (37) that is transmission-connected to the tension roller (33), and the tension adjustment component (37) is used to adjust the center distance between the tension roller (33) and the active forming roller (31) in real time; The forming mechanism (30) further comprises a forming frame (36), the active forming roller (31) and the passive forming roller (32) being rotatably connected to the forming frame (36), a forming power member (38) being transmission-connected to the active forming roller (31) being mounted on the forming frame (36), the tension roller (33) being movably connected to the forming frame (36), the tension adjustment assembly (37) comprising a servo motor (371) mounted on the forming frame (36), a synchronous shaft (372) connected to the output shaft of the servo motor (371), and a swing arm (373) swingably connected to the forming frame (36), the synchronous shaft (372) being rotatably connected to the forming frame (36), driving gears (374) being provided at both ends of the synchronous shaft (372), the swing arm (373) being rotatably connected to both ends of the tension roller (33), and a transmission tooth (375) meshing with the driving gear (374) being provided at one end of the swing arm (373) close to the driving gear (374); It also includes a stripping mechanism (50) arranged at one end of the forming mechanism (30), the stripping mechanism (50) including a stripping frame (51), a stripping cylinder (52) and a stripping power piece (53), one end of the core shaft (35) is limitedly connected to the stripping frame (51), the stripping cylinder (52) is sleeved on the outer surface of the core shaft (35), and the stripping cylinder (52) is slidably connected to the stripping frame (51), and the stripping power piece (53) drives the stripping cylinder (52) to reciprocate along the axial direction of the core shaft (35) so that the formed paper tube is separated from the core shaft (35); The stripping mechanism (50) further comprises a first floating assembly (54) connected to the core shaft (35) and a second floating assembly (55) connected to the stripping cylinder (52); The first floating assembly (54) comprises a first guide wheel (541), a first weight (542) and a first traction rope (543); the first guide wheel (541) is installed on the stripping frame (51); the first traction rope (543) is wound around the first guide wheel (541); one end of the first traction rope (543) is connected to the core shaft (35) and the other end is connected to the first weight (542); The second floating component (55) comprises a supporting member (551), a second guide wheel (552), a second weight (553) and a second traction rope (554); the supporting member (551) is slidably arranged along the vertical direction to set an active forming roller (31) close to one end of the stripping frame (51), and the supporting member (551) supports the stripping cylinder (52); the second guide wheel (552) is arranged on one side of the supporting member (551), the second traction rope (554) is wound around the second guide wheel (552), and the two ends of the second traction rope (554) are respectively connected to the supporting member (551) and the second weight (553).

2. The fireworks paper tube forming device (100) according to claim 1, characterized in that: The cutting mechanism (20) comprises a cutting frame (21), a cutting power member (22), a cutting knife seat (23), a cutter (24) and a paper pressing member (25); the cutting frame (21) is mounted on an end of the paper feeding frame (12) away from the material frame (11); the cutting power member (22) is mounted on the cutting frame (21); the cutting knife seat (23) is slidably connected to the cutting frame (21); the cutting knife seat (23) is transmission-connected to the cutting power member (22); the cutter (24) is mounted on the cutting knife seat (23); the paper feeding frame (12) is provided with a supporting plate (26) directly below the cutting mechanism (20); the supporting plate (26) is provided with a slit (261) corresponding to the cutter (24); and the paper pressing member (25) is floatingly connected to a side of the cutting knife seat (23) close to the forming mechanism (30).

3. The fireworks paper tube forming device (100) according to claim 2, characterized in that: The paper pressing member (25) is provided with a slider, the cutting knife seat (23) is provided with a slide rail that slidably cooperates with the slider, the length extension direction of the slide rail is consistent with the moving direction of the cutting knife (24), an elastic member (27) is provided between the paper pressing member (25) and the cutting knife seat (23), and the compression direction of the elastic member (27) is consistent with the moving direction of the cutting knife (24).

4. The fireworks paper tube forming device (100) according to claim 2, characterized in that: The invention also comprises a gluing mechanism (40), the gluing mechanism (40) comprising a gluing plate (41) arranged on the side of the cutter (24) close to the paper pressing member (25) and a glue tray (42) arranged below the gluing plate (41), the glue tray (42) being provided with a high-elastic sponge (43), and the high-elastic sponge (43) being located directly below the gluing plate (41).

5. The fireworks paper tube forming device (100) according to claim 1, characterized in that: The invention also comprises a paper pressing mechanism (60) arranged between the paper feeding frame (12) and the forming mechanism (30), the paper pressing mechanism (60) comprising a paper pressing frame (61), a paper pressing active roller (62), a swing shaft (63) and a paper guide (64), the paper pressing frame (61) being arranged at one end of the paper feeding frame (12) close to the forming mechanism (30), the paper pressing active roller (62) being rotatably connected to the paper pressing frame (61), a paper feeding power member (15) being installed on the paper feeding frame (12), the paper feeding power member (15) being transmission-connected to the active paper feeding roller (13) and the paper pressing active roller (62), the swing shaft (63) being arranged above the paper pressing active roller (62), and a plurality of paper guides (64), each of which is arranged at intervals along the axial direction of the swing shaft (63), and each of which is arranged opposite to the paper pressing active roller (62).

6. The fireworks paper tube forming device (100) according to claim 1, characterized in that: The feeding mechanism (10) further comprises a buffer frame (16) arranged at one end of the paper feeding frame (12) close to the material frame (11); at least two fixed shafts (17) and a buffer shaft (18) are arranged on the buffer frame (16); the fixed shaft (17) and the buffer frame (16) are rotatably connected; the buffer shaft (18) is arranged between two adjacent fixed shafts (17); and the buffer shaft (18) and the buffer frame (16) are floatingly connected.

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