Wood chip and gunpowder sufficient pressing device for traditional firework production

Abstract

The invention discloses a wood chip and gunpowder sufficient press-fit device for traditional firework production, and relates to the technical field of firework manufacturing, the wood chip and gunpowder sufficient press-fit device comprises mounting frames, the mounting frames are fixedly and symmetrically distributed on the two sides of a conveying assembly through bolts, each mounting frame is slidably connected with a mounting plate, a material containing box is fixedly connected between the mounting plates on the two sides, and each mounting plate is provided with an air cylinder. According to the invention, the inclined surface of the fixed guide frame is matched with the inclined surface base of the setting machine to realize accurate positioning of the firework cylinder; the material placing frame and the vibration machine cooperate to ensure that the materials are uniformly filled into each single tube of the firework cylinder, and residual air is removed; a cylindrical pressing pipe of the pressing piece is accurately matched with the inner diameter of a single pipe, so that uniform compaction of materials is realized, and the distribution consistency of pressing density is improved; residual materials on the upper surface of the setting machine are scraped off through a bottom plate of the material containing frame, the filling amount of a single tube is accurately controlled, and the material pressing efficiency and quality in traditional firework production are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks production, in particular to a device for fully pressing sawdust and gunpowder used in traditional fireworks production. Background Art

[0002] As an integral part of traditional folk culture, fireworks production processes, along with their refined and safety-focused processes, have always been a core concern for the industry. The pressing of sawdust and gunpowder is particularly crucial in the fireworks manufacturing process, as its quality directly impacts the fireworks' performance and safety. Traditionally, sawdust and gunpowder must be uniformly mixed in a specific ratio and then pressed together under high pressure to form a dense structure, ensuring a stable combustion rate and controllable explosion energy.

[0003] However, the mechanical pressing devices currently used in the industry primarily use a material box to vertically squeeze the mixture and fill it into the firework tube. While this type of equipment provides basic compaction capabilities, it has exposed two prominent problems in actual use: First, wood chips easily adhere to the inner walls of the material box and the feed pipe, leading to localized blockages or proportional shifts during material delivery, making it difficult to accurately control the filling amount of a single tube; second, during the pressing process, residual air within the mixture cannot be effectively expelled, forming tiny air cavities and causing uneven density distribution during pressing. According to production data, the sawdust content in firework tubes produced using traditional equipment fluctuates by as much as ±15%, significantly deviating from the ±5% error standard required by the process. This quality deviation not only leads to uneven product firing results, but also poses a potential threat to production safety by posing a risk of explosion due to localized density anomalies.

[0004] Based on the above situation, the present invention proposes a device for fully pressing wood chips and gunpowder used in traditional fireworks production. Summary of the Invention

[0005] In order to overcome the shortcomings of existing fireworks pressing devices such as large deviation in single-tube filling amount and uneven pressing density, the present invention provides a device for fully pressing wood chips and gunpowder for traditional fireworks production.

[0006] A device for fully pressing wood chips and gunpowder for traditional fireworks production includes mounting frames, which are symmetrically distributed on both sides of a transmission component by bolt fixation. Each mounting frame is slidably connected to a mounting plate, and a material storage box is fixed between the mounting plates on both sides. A cylinder is mounted on each mounting plate, and the end of the cylinder piston rod is fixed to the top of the corresponding mounting frame. A first electric push rod is mounted on the material storage box, and a honeycomb pressing part is fixed to its telescopic end. A shaping machine is provided on the bottom wall of the material storage box, which has a guide circular hole corresponding to the position of the pressing tube.

[0007] Further explanation: vibration machines are symmetrically installed on both sides of the inner wall of the material box, and a photoelectric positioning sensor is embedded inside the shaping machine, which forms a closed-loop control system with the cylinder through the PLC control module.

[0008] Further explanation: A second electric push rod is provided on the outer wall of the material placing box, and its telescopic end passes through the outer wall of the material placing box and is fixedly connected with a material placing frame with an open bottom, and it makes a horizontal reciprocating motion in the material placing box.

[0009] Further explanation: Symmetrically arranged push plates are provided in the material placing frame, and symmetrically distributed first springs are connected between the push plates and the inner wall of the material placing frame, and baffles are provided on the tops of the push plates.

[0010] Further explanation: A pressing frame is slidably connected to one side of the material placing box away from the second electric push rod, and symmetrically distributed second springs are connected between the pressing frame and the side wall of the material placing box. A wedge-shaped pushing frame is slidably connected to the side wall of the material placing box, and it is in extrusion cooperation with the pressing frame.

[0011] Further explanation: Helical racks are symmetrically arranged on both sides of the pressing frame, and the helical racks and the vertical edges of the adjacent baffles form a progressive meshing mechanism to achieve two-way force transmission through tooth shape matching.

[0012] Further explanation: Symmetrically distributed fixed guide frames are fixedly connected to the bottom wall of the material placing box on the side close to the shaping machine. The guiding surface of the fixed guide frames is processed with a 45° involute inclined surface. The shaping machine slides up and down between the symmetrically distributed fixed guide frames, and third springs are connected between the shaping machine and the fixed guide frames, and they are respectively wound around the fixed guide frames.

[0013] Further explanation: A screw is threadedly connected to one of the mounting plates, and an adjusting frame is fixedly connected to the end of the screw. Symmetrically distributed inclined surfaces are provided on the adjusting frame, and extrusion cooperation with the shaping machine is achieved through the wedge effect of the inclined surfaces.

[0014] Further explanation: A pressing plate is slidably connected to the pressing member, and it is connected to the pressing member through symmetrically distributed fourth springs, and the symmetrically distributed fourth springs are respectively wound around the pressing plate.

[0015] Further explanation: The bottom of the shaping machine is processed with a 15° self-locking inclined surface base.

[0016] The beneficial effects of the present invention are as follows: The present invention first realizes the precise positioning of the fireworks tube through the cooperation of the 45° involute inclined surface of the fixed guide frame and the 15° self-locking inclined surface base of the shaping machine; the material placing frame and the vibrating machine cooperate to ensure that the materials are evenly filled into each single tube of the fireworks tube and the residual air is removed; the cylindrical pressing tube of the pressing member is precisely matched with the inner diameter of the single tube to achieve uniform compaction of the materials and improve the consistency of the pressing density distribution; the bottom plate of the material placing frame scrapes off the residual materials on the upper surface of the shaping machine, so that the filling amount of the single tube can be accurately controlled, and the material pressing efficiency and quality in the traditional fireworks production are improved.

[0017] The present invention forms a controllable groove between the shaping machine and the material placing box through the cooperation of the position adjusting frame and the third spring, realizing flexible adjustment of the filling amount of the material in the firework tube; the elastic pressing mechanism composed of the pressing plate and the fourth spring effectively compacts the redundant material in the groove, preventing it from scattering in subsequent processes and improving production efficiency and product quality. Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the separation of components such as the material placing box and the first electric push rod of the present invention.

[0020] Figure 3 It is a three-dimensional structure sectional view of components such as the material placing box, the first electric push rod and the shaping machine of the present invention.

[0021] Figure 4 It is a three-dimensional structure schematic diagram of components such as the material placing frame, the pushing plate and the first spring of the present invention.

[0022] Figure 5 It is a three-dimensional structure schematic diagram of components such as the pressing frame, the second spring and the pushing frame of the present invention.

[0023] Figure 6 It is a three-dimensional structure schematic diagram of components such as the pushing plate, the pressing frame and the pushing frame of the present invention.

[0024] Figure 7 It is a three-dimensional structure schematic diagram of components such as the fixed guide frame, the third spring and the position adjusting frame of the present invention.

[0025] Figure 8 It is a three-dimensional structure schematic diagram of components such as the third spring, the position adjusting frame and the screw of the present invention.

[0026] Figure 9 It is a three-dimensional structure schematic diagram of components such as the shaping machine, the pressing plate and the fourth spring of the present invention.

[0027] In the above drawings: 1: mounting frame, 101: firework tube, 2: cylinder, 3: material placing box, 301: mounting plate, 4: first electric push rod, 401: pressing member, 5: shaping machine, 6: material placing frame, 7: second electric push rod, 8: vibrating machine, 9: pushing plate, 901: baffle, 10: first spring, 11: pressing frame, 12: second spring, 13: pushing frame, 14: fixed guide frame, 15: third spring, 16: position adjusting frame, 17: screw, 18: pressing plate, 19: fourth spring. Detailed Embodiment

[0028] The following describes the embodiments of the present invention with reference to the drawings.

[0029] Embodiment 1: A device for fully pressing sawdust and gunpowder used in traditional fireworks production, as Figures 1-3 shown, including a mounting frame 1 as the bearing main body, which is symmetrically distributed on both sides of the transmission component by bolts. On each mounting frame 1, a mounting plate 301 is slidably connected through a linear guide rail. A rectangular material placing box 3 is rigidly connected between the two mounting plates 301. On each mounting plate 301, a cylinder 2 is vertically installed, and the end of the piston rod of the cylinder 2 is fixedly connected to the top of the corresponding mounting frame 1 through a flange; a first electric push rod 4 is installed on the material placing box 3, and its telescopic end is fixedly connected with a honeycomb-shaped pressing part 401 through a connecting plate.

[0030] The pressing part 401 is provided with cylindrical pressing tubes arranged in a matrix. The inner diameter of each pressing tube has a clearance fit of 0.5 mm with the inner diameter of a single tube of the fireworks tube 101. On the bottom wall of the material placing box 3, a shaping machine 5 is provided, which is provided with guiding round holes corresponding to the positions of the pressing tubes. The diameter of the round holes forms a transition fit with the caliber of a single tube of the fireworks tube 101. The bottom of the shaping machine 5 is processed with a 15° self-locking inclined plane base, which forms a positioning conical surface fit with the conical mouth of the fireworks tube 101 to ensure airtightness during installation.

[0031] On both sides of the inner wall of the material placing box 3, vibration machines 8 are symmetrically installed, which are used to evenly vibrate the mixed material into the inner cavity of the fireworks tube 101. An optoelectronic positioning sensor is embedded in the shaping machine 5, and it forms a closed-loop control system with the cylinder 2 through a PLC control module. When the fireworks tube 101 is transported to directly below the shaping machine 5 by a conveyor belt, the PLC control system will trigger the cylinder 2 to drive the material placing box 3 and the shaping machine 5 to move down linearly, so that the shaping machine 5 covers the fireworks tube 101.

[0032] A second electric push rod 7 is fixed to the outer wall of the material placing box 3 through the mounting plate 301. Its telescopic end passes through the outer wall of the material placing box 3 and is fixedly connected with a material placing frame 6 with an open bottom. The material placing frame 6 realizes horizontal reciprocating motion with the assistance of a linear guide rail.

[0033] As Figure 4 shown, the material placing frame 6 is provided with symmetrically arranged push plates 9. Symmetrically distributed first springs 10 are connected between the push plates 9 and the inner wall of the material placing frame 6 to provide elastic supporting force to ensure that the push plates 9 can automatically adjust their positions according to the change of the material quantity, so as to realize the gathering effect of the material. A baffle 901 is provided on the top of each push plate 9.

[0034] As Figure 5 and Figure 6As shown in the figure, a pressing frame 11 is slidably connected to the side of the material placing box 3 away from the second electric push rod 7. Symmetrically distributed second springs 12 are connected between the pressing frame 11 and the side wall of the material placing box 3, forming an elastic reset mechanism. A wedge-shaped pushing frame 13 is slidably connected to the side wall of the material placing box 3 through a guide post and guide sleeve structure. A 45° guiding inclined surface is machined on the side of the wedge-shaped pushing frame 13 close to the pressing frame 11. The pushing frame 13 forms a force transmission cooperation with the pressing frame 11 through the inclined surface, and can convert the horizontal thrust into a vertical pressure. Diagonal tooth plates are symmetrically arranged on both sides of the pressing frame 11. The diagonal tooth plates and the vertical edges of the adjacent baffle plates 901 form a progressive meshing mechanism, and realize bidirectional force transmission through tooth shape cooperation.

[0035] During use, the mounting frame 1 is fixed to both sides of the conveying assembly by bolts. In the initial state, the telescopic part of the first electric push rod 4 is in a contracted state, and the pressing part 401 is located above the material placing box 3. The material is placed in the material placing frame 6. As the amount of material increases, the push plate 9 moves outward under the action of the first spring 10 to ensure that the material is concentrated in the middle of the material placing frame 6.

[0036] The empty fireworks tube 101 is placed on the conveying assembly. When moving to the right, it contacts the 45° involute inclined surface of the fixed guide frame 14, and automatically adjusts its position to be centered and aligned. When the fireworks tube 101 reaches directly below the shaping machine 5, the photoelectric positioning sensor detects its position, and triggers the air cylinder 2 through the PLC control system, driving the material placing box 3 and the shaping machine 5 to move downward along the linear guide rail. The 15° self-locking inclined surface base at the bottom of the shaping machine 5 cooperates with the conical mouth of the fireworks tube 101 to achieve precise positioning and ensure airtightness.

[0037] Start the second electric push rod 7 to drive the material placing frame 6 to move horizontally to the left, so that the material moves above the shaping machine 5. At this time, the vibrating machine 8 generates high-frequency vibration and transmits it to the material through the material placing box 3. The material is evenly filled into each single tube of the fireworks tube 101 under the action of vibration until it is full. During this process, the push plate 9 always remains in an open state, expanding the material distribution range and improving the filling efficiency.

[0038] When the material placing frame 6 moves to the left and contacts the wedge-shaped pushing frame 13, the pushing frame 13 is forced to move to the left, and its 45° guiding inclined surface pushes the pressing frame 11 to move downward, compressing the second spring 12. The diagonal tooth plates on the pressing frame 11 and the baffle plate 901 form a progressive meshing, slightly pushing open the push plate 9, further expanding the material space, enhancing the transmission effect of the vibration of the vibrating machine 8, and accelerating the material filling process.

[0039] After the material filling is completed, control the second electric push rod 7 to drive the material placing frame 6 to reset to the right. Under the elastic action of the second spring 12, the pressing frame 11 resets upward and no longer presses against the baffle plate 901. As the material in the material placing frame 6 decreases, the push plate 9 gradually moves inward under the action of the first spring 10 to continue to gather the remaining material. At the same time, the bottom plate of the material placing frame 6 scrapes off the residual material on the upper surface of the shaping machine 5 to ensure that there is no excess material remaining.

[0040] Control the first electric push rod 4 to drive the pressing member 401 to move downward along the linear guide rail, pass through the round hole of the shaping machine 5 and enter the fireworks tube 101. The cylindrical pressing tube on the pressing member 401 has a clearance fit of 0.5 mm with the inner diameter of the single tube of the fireworks tube 101, and compact the materials in each single tube during the downward movement. After the pressing operation is completed, control the first electric push rod 4 to drive the pressing member 401 to reset upward.

[0041] Control the piston rod of the cylinder 2 to extend downward, drive the material placing box 3 and the shaping machine 5 to move upward and reset, and the shaping machine 5 no longer covers the fireworks tube 101. The fireworks tube 101 continues to be conveyed to the next process, and the device returns to the initial state to prepare for processing the next fireworks tube 101.

[0042] In summary, first, the 45° involute inclined plane of the fixed guide frame 14 is matched with the 15° self-locking inclined plane base of the shaping machine 5 to achieve precise positioning of the fireworks tube 101; the material placing frame 6 and the vibrating machine 8 cooperate to ensure that the materials are evenly filled into each single tube of the fireworks tube 101 and the residual air is removed; the cylindrical pressing tube of the pressing member 401 is precisely matched with the inner diameter of the single tube to achieve uniform compaction of the materials and improve the consistency of the pressing density distribution; the bottom plate of the material placing frame 6 scrapes the residual materials on the upper surface of the shaping machine 5, so as to accurately control the filling amount of the single tube and improve the material pressing efficiency and quality in traditional fireworks production.

[0043] Embodiment 2: As Figure 7 and Figure 8 shown, on the side of the bottom wall of the material placing box 3 close to the shaping machine 5, symmetrically distributed fixed guide frames 14 are fixedly connected by high-strength bolts. The guiding surfaces are processed with 45° involute inclined planes to form an automatic centering guiding mechanism, which can ensure that the fireworks tube 101 is placed in the center. The shaping machine 5 realizes up and down sliding between the symmetrically distributed fixed guide frames 14 through linear bearings. Third springs 15 are connected between the shaping machine 5 and the fixed guide frames 14, and they are respectively helically wound on the fixed guide frames 14 to form an elastic buffer system; a screw 17 is threadedly connected to one of the mounting plates 301, and its end is fixedly connected with an adjusting frame 16. The two sides of the adjusting frame 16 are processed with 30° double inclined planes to form a precision fine-tuning mechanism, and form a gapless extrusion fit with the shaping machine 5 through the wedge effect of the inclined plane.

[0044] As Figure 9 shown, a pressing plate 18 is slidably connected in the guiding groove of the pressing member 401 through a linear guide rail. An elastic pressing system is formed between the pressing plate 18 and the pressing member 401 through symmetrically distributed fourth springs 19. The symmetrically distributed fourth springs 19 are respectively helically wound on the pressing plate 18. A polyurethane buffer pad is attached to the working surface of the pressing plate 18 to ensure uniform pressure and no damage to the surface of the workpiece.

[0045] To achieve precise control over the filling quantity of materials in the fireworks tube 101, the staff can adjust the position of the adjustment frame 16 by adjusting the screw 17. When turning the screw 17, the adjustment frame 16 moves forward, and its inclined surface gradually presses against the shaping machine 5, causing the shaping machine 5 to move slightly downward along the linear guide. At this time, the third spring 15 undergoes elastic deformation, and the shaping machine 5 slides downward relative to the material placement box 3, forming a controllable groove area between the two. This groove is used to temporarily store extra materials to increase the filling quantity in the fireworks tube 101.

[0046] When the fireworks tube 101 is conveyed to the designated position, the air cylinder 2 controls the material placement box 3 and the shaping machine 5 to move downward synchronously, and the self-locking inclined surface base at the bottom of the shaping machine 5 precisely covers the fireworks tube 101. Subsequently, the material placement frame 6 drives the materials to reset to the right, and part of the materials fall into the above-mentioned groove. During the downward movement of the pressing member 401, the materials in the groove are gradually pressed into the fireworks tube 101, thereby increasing the filling quantity.

[0047] During the pressing operation, the pressing plate 18 on the pressing member 401 and the shaping machine 5 cooperate to ensure the uniform compaction of the excess materials in the groove. Specifically, when the pressing member 401 drives the pressing plate 18 to move downward, the pressing plate 18 first contacts the upper surface of the shaping machine 5. As the pressing member 401 continues to move downward, the pressing plate 18 slides relatively, and the fourth spring 19 undergoes elastic compression deformation. During this process, the reverse elastic force generated by the fourth spring 19 causes the pressing plate 18 to continuously press against the upper surface of the shaping machine 5, uniformly compacting the excess materials in the groove and preventing them from scattering in subsequent processes.

[0048] When the pressing member 401 resets upward, the pressing plate 18 rises synchronously and automatically slides back to its original position under the action of the elastic restoring force of the fourth spring 19. Since the excess materials in the groove have been compacted by the pressing plate 18, when the material placement box 3 and the shaping machine 5 reset upward and the fireworks tube 101 moves to the right on the conveying assembly, the materials in the circular hole of the shaping machine 5 are not easily dropped onto the conveying belt due to vibration or inclination, thus ensuring the continuity and stability of the production process.

[0049] In summary, through the cooperation of the adjustment frame 16 and the third spring 15, a controllable groove is formed between the shaping machine 5 and the material placement box 3 to achieve flexible adjustment of the filling quantity of materials in the fireworks tube 101; the elastic pressing mechanism composed of the pressing plate 18 and the fourth spring 19 effectively compacts the excess materials in the groove, preventing them from scattering in subsequent processes and improving production efficiency and product quality.

[0050] Those skilled in the art of this industry should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A device for fully pressing sawdust and gunpowder used in traditional fireworks production, comprising a mounting frame (1) which is symmetrically distributed on both sides of the transmission component by bolts. Each mounting frame (1) is slidably connected with a mounting plate (301), and a material placing box (3) is fixedly connected between the two mounting plates (301). It is characterized in that, A cylinder (2) is installed on each mounting plate (301). The end of the piston rod of the cylinder (2) is fixedly connected to the top of the corresponding mounting frame (1). A first electric push rod (4) is installed on the material placing box (3), and a honeycomb pressing member (401) is fixedly connected to its telescopic end. A shaping machine (5) is provided on the bottom wall of the material placing box (3), and it is provided with a guiding round hole corresponding to the position of the pressing pipe.

2. The fully pressing device for sawdust and gunpowder used in traditional fireworks production according to claim 1, wherein, Vibrators (8) are symmetrically installed on both sides of the inner wall of the material placing box (3). An optoelectronic positioning sensor is embedded inside the shaping machine (5), and it forms a closed-loop control system with the cylinder (2) through a PLC control module.

3. The fully pressing device for sawdust and gunpowder used in traditional fireworks production according to claim 2, wherein A second electric push rod (7) is provided on the outer wall of the material placing box (3). Its telescopic end passes through the outer wall of the material placing box (3) and is fixedly connected to a material placing frame (6) with an open bottom, and it makes a horizontal reciprocating motion inside the material placing box (3).

4. The fully pressing device for sawdust and gunpowder used in traditional fireworks production according to claim 3, wherein, Symmetrically arranged push plates (9) are provided inside the material placing frame (6). Symmetrically distributed first springs (10) are connected between the push plates (9) and the inner wall of the material placing frame (6). A baffle (901) is provided on the top of each push plate (9).

5. The fully pressing device for sawdust and gunpowder used in traditional fireworks production according to claim 4, characterized in that, A pressing frame (11) is slidably connected to one side of the material placing box (3) away from the second electric push rod (7). Symmetrically distributed second springs (12) are connected between the pressing frame (11) and the side wall of the material placing box (3). A wedge-shaped pushing frame (13) is slidably connected to the side wall of the material placing box (3), and it is in extrusion fit with the pressing frame (11).

6. A device for fully pressing sawdust and gunpowder used in traditional fireworks production according to claim 5, characterized in that, Helical tooth plates are symmetrically arranged on both sides of the pressing frame (11). The helical tooth plates and the vertical sides of the adjacent baffles (901) form a progressive meshing mechanism to achieve two-way force transmission through tooth shape matching.

7. An apparatus for fully pressing sawdust and gunpowder used in traditional fireworks production according to claim 6, characterized in that, Symmetrically distributed fixed guide frames (14) are fixedly connected to the bottom wall of the material placing box (3) on the side close to the shaping machine (5). A 45° involute inclined plane is machined on the guiding surface. The shaping machine (5) slides up and down between the symmetrically distributed fixed guide frames (14). Third springs (15) are connected between the shaping machine (5) and the fixed guide frames (14), and they are respectively wound around the fixed guide frames (14).

8. An apparatus for fully pressing sawdust and gunpowder used in the production of traditional fireworks according to claim 7, characterized in that, A screw (17) is threadedly connected to one of the mounting plates (301). An adjusting frame (16) is fixedly connected to its end. Symmetrically distributed inclined planes are provided on the adjusting frame (16), and it is in extrusion fit with the shaping machine (5) through the wedge effect of the inclined planes.

9. The fully pressing device for sawdust and gunpowder used in traditional fireworks production according to claim 8, characterized in that, A pressing plate (18) is slidably connected to the pressing member (401). Symmetrically distributed fourth springs (19) are connected between the pressing plate (18) and the pressing member (401), and the symmetrically distributed fourth springs (19) are respectively wound around the pressing plate (18).

10. A device for fully pressing sawdust and gunpowder used in traditional fireworks production according to claim 9, characterized in that, A 15° self-locking inclined plane base is machined at the bottom of the shaping machine (5).

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