Damp-proof automatic wax sealing device for firework production

Abstract

The invention discloses a damp-proof automatic wax sealing device for firework production, which relates to the field of firework production and manufacturing and comprises a belt conveyor, a first support is fixedly connected onto a frame of the belt conveyor, a water pump is mounted at the top of the first support, a soft liquid inlet pipe is fixedly connected onto a liquid inlet port of the first support, and a hard liquid outlet pipe is fixedly connected onto a liquid outlet port of the first support. Symmetrically-distributed connecting frames are fixedly connected to a frame of the belt conveyor, a shell is arranged between the symmetrically-distributed connecting frames, and a square isolation plate is fixedly connected to the inner side of the bottom wall of the shell and divides the interior of the shell into an inner cavity and an outer cavity. Continuous operation is achieved through mechanical conveying, positioning and quantitative waxing, and the production efficiency is improved; through the synergistic effect of air pressure auxiliary wax filling and ejector pin precise pushing injection, the thickness error of a wax layer is reduced, and the moisture-proof qualification rate is increased; the fully-closed wax liquid circulating system prevents workers from contacting with high-temperature wax liquid, so that the industrial injury risk is zero, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of fireworks production and manufacturing, and particularly to an automatic moisture-proof wax-sealing device for fireworks production. Background Art

[0002] As a product of the combination of traditional craftsmanship and chemical engineering technology, the production process of fireworks has strict requirements for moisture-proof technology. The wax-sealing process is a core link to ensure the safety of fireworks. By forming a dense wax layer on the top of the fireworks shell, it blocks the contact between environmental moisture and the internal gunpowder, ensuring the chemical stability of the gunpowder components. Research shows that about 68% of the fireworks misfire accidents caused by moisture-proof failure are due to defects in the wax-sealing process, highlighting the crucial role of this link in product safety and firing reliability.

[0003] Currently, the wax-sealing process in the fireworks industry still mainly relies on manual operation. Operators need to hold a brush and apply molten wax liquid to the top of the fireworks shell one by one. Although this method can form a basic moisture-proof layer, there are significant technical shortcomings: First, the production efficiency is low, and the daily processing volume of a single station is relatively low, far lower than the production capacity requirements of modern production lines; Second, the process quality fluctuates greatly. Due to the differences in workers' skills and fatigue factors, the thickness of the wax layer is uneven (too thick or too thin in some parts), affecting the sealing uniformity; Third, the potential safety hazards are prominent. Operators are prone to scalding when exposed to high-temperature wax liquid (usually heated to 80 - 120 °C) for a long time, and being exposed to the volatile substances of the wax liquid poses a threat to health.

[0004] Based on the above situation, there is an urgent need for an automatic moisture-proof wax-sealing device for fireworks production. Summary of the Invention

[0005] In order to overcome the disadvantages of low efficiency, unstable quality and potential safety hazards existing in the traditional manual wax-sealing method, the present invention provides an automatic moisture-proof wax-sealing device for fireworks production.

[0006] An automatic moisture-proof wax-sealing device for fireworks production includes a belt conveyor. A first support is fixedly connected to the frame of the belt conveyor. A water pump is installed on the top of the first support. A soft liquid inlet pipe is fixedly connected to its liquid inlet port, and a hard liquid outlet pipe is fixedly connected to its liquid outlet port. Symmetrically distributed connecting frames are fixedly connected to the frame of the belt conveyor. An outer shell is arranged between the symmetrically distributed connecting frames. A square partition plate is fixedly connected to the inner bottom wall of the outer shell, dividing the interior of the outer shell into two cavities, an outer cavity and an inner cavity. The other end of the liquid inlet pipe is communicated with the outer cavity of the outer shell, and the other end of the liquid outlet pipe is communicated with the inner cavity. A second cylinder is installed on the top of the outer shell, and a closing frame is fixedly connected to its piston rod. A liquid outlet plate is fixedly connected to the bottom wall of the outer shell, and a heating plate is installed inside the side wall of the outer shell.

[0007] Optionally, evenly distributed discharge holes are opened on the liquid outlet plate, and thimbles corresponding to the number of the discharge holes are arranged at the bottom of the closing frame.

[0008] Optionally, a feed window is provided on the top wall of the outer shell on the side close to the outer cavity, and a feed plate is provided therein.

[0009] Optionally, there is a certain space between the top wall of the partition plate and the top wall of the outer shell, which is convenient for the wax liquid in the inner cavity to overflow into the outer cavity when it is too much.

[0010] Optionally, a second bracket is fixedly connected inside the inner cavity of the outer shell.

[0011] Optionally, symmetrically distributed first cylinders are installed on the outer shell, and the ends of their piston rods are respectively connected to the adjacent connecting frames.

[0012] Optionally, a piston cylinder is fixedly connected to the top of the outer shell, a piston rod is slidably connected therein, the piston rod is fixedly connected to the closing frame, a gas guiding member is provided on the piston cylinder, a second one-way valve for exhausting gas is installed therein, a first one-way valve for intake air is installed on the top wall of the piston cylinder, and the exhaust port of the piston cylinder is communicated with the inner cavity of the outer shell through the gas guiding member.

[0013] Optionally, third cylinders are installed on the symmetrically distributed connecting frames, correction plates are fixedly connected to the piston rods on their mutually approaching sides, an infrared sensor is installed on one of the connecting frames, and is electrically connected to the third cylinder through a control module.

[0014] Optionally, a pushing frame is fixedly connected to the piston rod of each third cylinder, a rectangular sliding groove is provided thereon, a blocking rod is rotatably connected to each connecting frame, a sliding column is provided thereon, and is respectively arranged in the adjacent sliding groove.

[0015] Optionally, symmetrically distributed guide columns are fixedly connected to each connecting frame, and the outer shell slides vertically on the symmetrically distributed guide columns.

[0016] The present invention realizes continuous operation through mechanical transportation, positioning and quantitative wax coating, improving production efficiency; the cooperative action of pneumatic auxiliary wax filling and precise injection by the ejector pin reduces the error of the wax layer thickness and improves the moisture-proof qualification rate; the fully enclosed wax liquid circulation system eliminates manual contact with high-temperature wax liquid, reduces the risk of work injury to zero, and improves safety.

[0017] The present invention adjusts the distance between the liquid outlet plate and the top of the fireworks shell through the first cylinder, effectively improving the adaptability and wax sealing accuracy of the device. Description of the Drawings

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

[0019] Figure 2 is a three-dimensional structural schematic diagram of components such as the first cylinder, feed plate and second cylinder of the present invention.

[0020] Figure 3 is a three-dimensional structural schematic diagram of components such as the first bracket, water pump and liquid inlet pipe of the present invention.

[0021] Figure 4 This is a three-dimensional structural sectional view of components such as the partition board, closing frame, and liquid outlet board of the present invention.

[0022] Figure 5 This is a three-dimensional structural sectional view of components such as the heating plate, piston cylinder, and first one-way valve of the present invention.

[0023] Figure 6 This is a three-dimensional structural schematic diagram of components such as the correction plate, third cylinder, and infrared sensor of the present invention.

[0024] Figure 7 This is a three-dimensional structural schematic diagram of components such as the push frame, blocking rod, and guide post of the present invention.

[0025] Figure 8 This is a three-dimensional structural schematic diagram of the third cylinder, push frame, and blocking rod of the present invention.

[0026] The markings of each component in the drawings are as follows: 101 - belt conveyor, 102 - first bracket, 103 - water pump, 104 - housing, 1041 - feed plate, 105 - connecting frame, 106 - first cylinder, 107 - liquid inlet pipe, 108 - second cylinder, 109 - liquid outlet pipe, 110 - heating plate, 111 - liquid outlet board, 112 - closing frame, 113 - partition board, 114 - second bracket, 201 - piston cylinder, 202 - piston rod, 203 - first one-way valve, 204 - second one-way valve, 205 - air guiding member, 301 - third cylinder, 302 - correction plate, 303 - infrared sensor, 401 - push frame, 402 - blocking rod, 501 - guide post. Detailed implementation manners

[0027] The following is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention accordingly.

[0028] Embodiment 1: A moisture-proof and automatic wax-sealing device for fireworks production, as Figures 1-4 shown, includes a belt conveyor 101 for stably conveying the fireworks shells to be wax-sealed. A first bracket 102 is fixedly connected to the left side of the frame of the belt conveyor 101. A water pump 103 is installed on the top of the first bracket 102. A soft liquid inlet pipe 107 is fixedly connected to the liquid inlet port on its lower side. The liquid inlet pipe 107 has a certain margin to adapt to the small displacements during the wax-sealing process. A hard liquid outlet pipe 109 is fixedly connected to the liquid outlet port on the upper side. Connecting frames 105 symmetrically distributed left and right are fixedly connected to the frame of the belt conveyor 101. A housing 104 is provided between the two connecting frames 105. A square partition board 113 is fixedly connected to the inner side of the bottom wall of the housing 104, dividing the interior of the housing 104 into two inner and outer cavities. The outer cavity is used to place the solid wax to be melted, and the inner cavity is used to hold the melted wax liquid.

[0029] The other end of the liquid inlet pipe 107 communicates with the outer cavity of the housing 104. The other end of the liquid outlet pipe 109 is inserted into the top wall of the housing 104 and communicates with the inner cavity. A second cylinder 108 is installed at the top of the housing 104, and a closing frame 112 is fixedly connected to its piston rod 202, which is used to control the flow of wax liquid and the wax sealing operation. A liquid outlet plate 111 is fixedly connected to the bottom wall of the housing 104, and a heating plate 110 is installed inside the side wall of the housing 104, which is used to heat the solid wax into a liquid state to ensure that the wax liquid has a moderate temperature and good fluidity.

[0030] The liquid outlet plate 111 is provided with evenly distributed discharge holes, and the bottom of the closing frame 112 is provided with ejector pins corresponding to the number of the discharge holes, which are used to accurately push the wax liquid flowing into the liquid outlet plate 111 onto the fireworks shell to complete the wax sealing operation; a feeding window is opened on the top wall of the housing 104 near the outer cavity, and a feeding plate 1041 is arranged therein to facilitate the addition of solid wax into the housing 104; a certain space is left between the top wall of the partition plate 113 and the top wall of the housing 104 to facilitate the overflow of the wax liquid in the inner cavity into the outer cavity when the wax liquid in the inner cavity is too much, avoiding wax liquid leakage or waste; a second bracket 114 is fixedly connected inside the inner cavity of the housing 104, which is used to guide the closing frame 112 to ensure its smooth up and down movement.

[0031] As Figure 5 shown, a piston cylinder 201 is fixedly connected to the top of the housing 104, and a piston rod 202 is slidably connected therein. The piston rod 202 is fixedly connected to the closing frame 112 and can move up and down with the closing frame 112. A gas guiding member 205 is arranged outside the piston cylinder 201, and a second one-way valve 204 for exhausting gas is installed therein. A first one-way valve 203 for admitting gas is installed on the top wall of the piston cylinder 201. The exhaust port of the piston cylinder 201 is communicated with the inner cavity of the housing 104 through the gas guiding member 205, so as to assist the wax liquid distribution process.

[0032] As Figure 6 shown, a third cylinder 301 is installed on each connecting frame 105, and a correcting plate 302 is fixedly connected to the piston rod 202 on the side where they are close to each other, which is used to center and position the fireworks shell to ensure the accurate wax sealing position. An infrared sensor 303 is installed on one of the connecting frames 105 and is electrically connected to the third cylinder 301 through a control module to realize the automatic detection and correction function.

[0033] As Figure 7 and Figure 8 shown, a pushing frame 401 is fixedly connected to the piston rod 202 of each third cylinder 301, and a rectangular sliding groove is opened thereon. A blocking rod 402 is rotatably connected to each connecting frame 105, and a sliding column is arranged thereon and is respectively arranged in the adjacent sliding groove, which is used to prevent the fireworks shell from shifting during the wax sealing process.

[0034] During use, take out the feeding plate 1041, place solid wax into its outer cavity through the feeding window on the top wall of the outer shell 104, start the heating plate 110, heat the solid wax in the outer cavity until it completely melts, and adjust the heating temperature to ensure that the wax liquid maintains good fluidity. Start the water pump 103, draw out the liquid wax in the outer cavity through the liquid inlet pipe 107, and input it into the inner cavity of the outer shell 104 via the liquid outlet pipe 109. Then, place the fireworks shell to be wax-sealed on the belt conveyor 101, and the conveyor automatically sends it below the outer shell 104.

[0035] When the infrared sensor 303 detects the approach of the fireworks shell, control the third cylinder 301 to drive the correction plate 302 to move inward, apply a central force to the fireworks shell to ensure its precise centering. At the same time, the pushing frame 401 moves inward, drives the blocking rod 402 to flip, and jointly blocks the fireworks shell directly below the outer shell 104. Start the second cylinder 108, drive the closing frame 112 to move up first and then down. When moving up, the ejector pin of the closing frame 112 is withdrawn from the discharge hole of the liquid outlet plate 111, and the wax liquid in the inner cavity fills into the discharge hole; when moving down, the ejector pin pushes the wax liquid onto the surface of the fireworks shell to complete the wax-sealing operation.

[0036] At the same time, the piston rod 202 moves up first and then down. When moving up, the air in the piston cylinder 201 is compressed, and the gas pushes open the second one-way valve 204 and enters the inner cavity of the outer shell 104 to increase the pressure and accelerate the filling of the discharge hole of the liquid outlet plate 111 with wax liquid; when moving down, the first one-way valve 203 opens and the second one-way valve 204 closes, and external air enters the piston cylinder 201 through the first one-way valve 203 to prepare for the next wax-sealing.

[0037] After the wax-sealing is completed, control the third cylinder 301 to drive the correction plate 302 to move outward, and at the same time, the pushing frame 401 drives the blocking rod 402 to flip outward to release the wax-sealed fireworks shell. The belt conveyor 101 continues to convey the fireworks shell backward to enter the next process. In summary, through mechanical conveying, positioning, and quantitative wax application, continuous operation is realized, and the production efficiency is improved; the combined action of pneumatic-assisted wax filling and precise injection by the ejector pin reduces the error of the wax layer thickness and improves the moisture-proof qualification rate; the fully enclosed wax liquid circulation system eliminates manual contact with high-temperature wax liquid, reduces the work injury risk to zero, and improves safety.

[0038] Embodiment 2: As Figure 2 、 Figure 3 and Figure 7 shown, the outer shell 104 is equipped with symmetrically distributed first cylinders 106 on the left and right, and the ends of their piston rods 202 are respectively connected to the adjacent connecting frames 105, which is convenient for controlling the distance between the liquid outlet plate 111 and the fireworks shell; each connecting frame 105 is fixedly connected with symmetrically distributed guiding columns 501 in the front and back, and the outer shell 104 slides vertically on the four guiding columns 501 to reduce the pressure on the first cylinder 106 and ensure the stable movement of the outer shell 104.

[0039] To adapt to fireworks casings of different size specifications and ensure an appropriate distance between the liquid outlet plate 111 and the top of the fireworks casing, it is necessary to adjust the spacing between the liquid outlet plate 111 and the top of the fireworks casing. The specific operation is as follows: According to the height of the fireworks casing, control the first cylinder 106 to drive the outer shell 104 to move up and down along the guide rail of the guide post 501 until the position of the liquid outlet plate 111 matches the top of the fireworks casing. This design effectively improves the adaptability and wax sealing accuracy of the device.

[0040] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. An automatic moisture-proof wax-sealing device for fireworks production, comprising a belt conveyor (101), and a first bracket (102) is fixedly connected to the frame of the belt conveyor (101), characterized in that, A water pump (103) is installed at the top of the first support (102). A soft liquid inlet pipe (107) is fixedly connected to its liquid inlet port, and a hard liquid outlet pipe (109) is fixedly connected to its liquid outlet port. Symmetrically distributed connecting frames (105) are fixedly connected to the frame of the belt conveyor (101). An outer shell (104) is provided between the symmetrically distributed connecting frames (105). A square partition plate (113) is fixedly connected to the inner side of the bottom wall of the outer shell (104), dividing the interior of the outer shell (104) into two inner and outer cavities. The other end of the liquid inlet pipe (107) communicates with the outer cavity of the outer shell (104), and the other end of the liquid outlet pipe (109) communicates with the inner cavity. A second cylinder (108) is installed at the top of the outer shell (104), and a closing frame (112) is fixedly connected to its piston rod (202). A liquid outlet plate (111) is fixedly connected to the bottom wall of the outer shell (104), and a heating plate (110) is installed inside the side wall of the outer shell (104).

2. The moisture-proof and automatic wax-sealing device for fireworks production according to claim 1, characterized in that, The liquid outlet plate (111) is provided with evenly distributed discharge holes, and the bottom of the closing frame (112) is provided with thimbles corresponding to the number of the discharge holes.

3. A moisture-proof automatic wax-sealing device for fireworks production according to claim 2, characterized in that, A feed window is opened on one side of the top wall of the outer shell (104) close to the outer cavity, and a feed plate (1041) is arranged inside it.

4. A moisture-proof automatic wax-sealing device for fireworks production according to claim 3, characterized in that, A certain space is left between the top wall of the partition plate (113) and the top wall of the outer shell (104) to facilitate the overflow of the wax liquid in the inner cavity to the outer cavity when the wax liquid in the inner cavity is too much.

5. A moisture-proof automatic wax-sealing device for fireworks production according to claim 4, characterized in that, A second support (114) is fixedly connected inside the inner cavity of the outer shell (104).

6. The automatic wax-sealing device for moisture-proof firework production according to claim 5, characterized in that, Symmetrically distributed first cylinders (106) are installed on the outer shell (104), and the ends of their piston rods (202) are respectively connected to the adjacent connecting frames (105).

7. A moisture-proof automatic wax-sealing device for fireworks production according to claim 6, characterized in that, A piston cylinder (201) is fixedly connected to the top of the outer shell (104). A piston rod (202) is slidably connected inside it. The piston rod (202) is fixedly connected to the closing frame (112). A gas guiding member (205) is provided on the piston cylinder (201), and a second one-way valve (204) for exhausting gas is installed inside it. A first one-way valve (203) for admitting gas is installed on the top wall of the piston cylinder (201). The exhaust port of the piston cylinder (201) communicates with the inner cavity of the outer shell (104) through the gas guiding member (205).

8. A moisture-proof automatic wax-sealing device for fireworks production according to claim 7, characterized in that, Symmetrically distributed third cylinders (301) are installed on the symmetrically distributed connecting frames (105). Correction plates (302) are fixedly connected to the piston rods (202) on their mutually close sides. An infrared sensor (303) is installed on one of the connecting frames (105) and is electrically connected to the third cylinder (301) through a control module.

9. A moisture-proof automatic wax-sealing device for fireworks production according to claim 8, characterized in that, Push frames (401) are fixedly connected to the piston rods (202) of each third cylinder (301), and rectangular sliding grooves are opened on them. Blocking rods (402) are rotatably connected to each connecting frame (105), and sliding columns are provided on them and are respectively arranged in the adjacent sliding grooves.

10. A moisture-proof automatic wax-sealing device for fireworks production according to claim 9, characterized in that each Symmetrically distributed guide columns (501) are fixedly connected to the connecting frames (105), and the outer shell (104) slides vertically on the symmetrically distributed guide columns (501).

Images