Gunpowder quantitative filling equipment for firework production

Abstract

The utility model discloses gunpowder quantitative filling equipment for firework production, which comprises a hydraulic rod mounted on an opening and closing mold, a guide rod positioned in a conveying pipe is fixedly mounted at the end part of the hydraulic rod, and a table block attached to the lower port of the conveying pipe is fixedly mounted at the end part of the guide rod. According to the quantitative gunpowder filling equipment for firework production, gunpowder enters the conveying pipe through the gap between the elastic scraping piece and the upper end opening of the conveying pipe, the lower end opening of the conveying pipe is blocked along with the table block, the amount of the gunpowder stored in the conveying pipe is constant, and the gunpowder is automatically filled in the conveying pipe in the process that the guide rod is pushed downwards by the hydraulic rod. The platform block opens the lower end opening of the conveying pipe to discharge materials, and the inverted-platform-shaped shield composed of the elastic scraper and the protective film immediately blocks the upper end opening of the conveying pipe until the conveying pipe completely injects gunpowder in the conveying pipe into a gunpowder barrel of fireworks, so that the conveying pipe plays a role in quantitatively discharging the gunpowder, and the amount of the injected gunpowder is kept constant. And the situation that the gunpowder is excessive or too little is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of fireworks manufacturing technology, and more specifically to a gunpowder metering filling device for fireworks production. Background Technology

[0002] The gunpowder used to prepare fireworks is usually filled manually and mixed according to a certain volume ratio to ensure that the gunpowder inside the gunpowder tube is filled evenly and controllably.

[0003] According to the publication (announcement) number: CN113776392A, the publication (announcement) date: 2021-12-10, a gunpowder stirring and quantitative filling device for the production of combined fireworks is disclosed.

[0004] In the prior art, including the aforementioned patents, mechanical equipment is currently used to fill gunpowder in order to improve the efficiency of gunpowder filling. This mainly involves transporting gunpowder through pipelines and inserting the end of the pipeline into the gunpowder cartridge for layered filling. However, during the pipeline filling process, an on / off valve is usually set on the main cylinder, while the pipeline is only responsible for filling the gunpowder. Therefore, some residue is very likely to occur during the pipeline filling process, resulting in a certain amount of gunpowder being either too much or too little inside the gunpowder cartridge, causing uneven stratification of the gunpowder and affecting fireworks processing. Utility Model Content

[0005] The purpose of this invention is to provide a gunpowder metering filling device for fireworks production, aiming to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gunpowder metering filling device for fireworks production includes an opening and closing mold with multiple feeding pipes, and a hydraulic rod installed on the opening and closing mold. A guide rod in the feeding pipe is fixedly installed at the end of the hydraulic rod, and a platform that fits the lower end of the feeding pipe is fixedly installed at the end of the guide rod.

[0008] A contact block is slidably disposed on the guide rod, and elastic scrapers for sealing the upper port of the feed pipe are arranged circumferentially on the contact block, and a protective film is fixedly installed between adjacent elastic scrapers.

[0009] Preferably, a protective ring that fits the port of the firework tube is movably provided on the outside of the conveying pipe, and a sliding rod that slides on the side wall of the conveying pipe is fixedly installed on the protective ring.

[0010] Preferably, the contact block has a slot, and the slide rod is fixedly installed with an elastic trigger head that fits into the slot and pushes the contact block upward.

[0011] Preferably, the elastic trigger head is decoupled from the slot, so that the contact block is driven by the tension spring pre-stored on it to move closer to the platform block.

[0012] Preferably, the elastic coefficient at the upper end of the arc-shaped elastic trigger head is greater than the elastic coefficient at the lower end.

[0013] In the above technical solution, the gunpowder metering filling equipment for fireworks production provided by this utility model has the following beneficial effects: by passing the gunpowder in the opening and closing mold through the gap between the elastic scraper and the upper end of the conveying pipe into the conveying pipe, and with the platform blocking the lower end of the conveying pipe, the amount of gunpowder stored in the conveying pipe is kept constant. During the process of the hydraulic rod pushing the guide rod downward, the platform opens the lower end of the conveying pipe to discharge the material, and the inverted platform-shaped shield composed of the elastic scraper and the protective film immediately blocks the upper end of the conveying pipe until the conveying pipe completely injects the gunpowder inside into the gunpowder cartridge of the fireworks. Thus, the conveying pipe plays the function of metering and discharging gunpowder, keeping the amount of gunpowder injected constant, and greatly reducing the situation of excessive or insufficient gunpowder. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the injection mold and its multiple feed pipes provided in this embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the material conveying pipe provided in an embodiment of this utility model;

[0017] Figure 3 This is a side cross-sectional view of the conveying pipe provided in an embodiment of the present utility model;

[0018] Figure 4 A schematic diagram of the assembly of the guide rod, protective ring, and elastic scraper provided for an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Opening and closing mold; 10. Air hole; 11. Material conveying pipe; 12. Hydraulic rod; 2. Guide rod; 21. Platform block; 3. Protective ring; 31. Slide rod; 32. Elastic trigger head; 4. Contact block; 40. Slot; 41. Elastic scraper; 42. Protective film. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, a gunpowder metering filling device for fireworks production includes an opening and closing mold 1 with multiple feeding pipes 11, and a hydraulic rod 12 installed on the opening and closing mold 1. A guide rod 2 in the feeding pipe 11 is fixedly installed at the end of the hydraulic rod 12, and a platform 21 that fits the lower end of the feeding pipe 11 is fixedly installed at the end of the guide rod 2.

[0023] A contact block 4 is slidably mounted on the guide rod 2. An elastic scraper 41 for sealing the upper port of the feed pipe 11 is arranged circumferentially on the contact block 4, and a protective film 42 is fixedly installed between adjacent elastic scrapers 41.

[0024] Specifically, the opening and closing mold 1, the conveying pipe 11, and the inlet on the upper mold are all existing technologies and will not be described in detail here. The hydraulic rod 12 is installed on the upper mold cover of the opening and closing mold 1, and the hydraulic rod 12 is also existing technology and will not be described in detail here.

[0025] Furthermore, the guide rod 2 is pushed down by the hydraulic rod 12, and the upper surface of the platform 21 is shaped like a platform so that the gunpowder in the conveying pipe 11 can be discharged downward through the inclined surface to avoid the accumulation of gunpowder. The diameter of the platform 21 is equal to the diameter of the inner wall of the conveying pipe 11, so that the platform 21 in the default state closes the lower end of the conveying pipe 11.

[0026] Furthermore, the multiple elastic scrapers 41 on the contact block 4 are combined to form an inverted truncated pyramid shape, and the ends of the elastic scrapers 41 are bent vertically upwards, so that this part of the vertical arc plate slides against the inner wall of the feed pipe 11. The protective film 42 is specifically a corrosion-resistant and high-temperature resistant rubber film, the material of which is existing technology and will not be described in detail here. The purpose is to use the protective film 42 to provide inverted pyramid shape shielding and sealing. In the default state, the lower end of the elastic scraper 41 is above the upper port of the feed pipe 11. The purpose is to use the gap formed between the inverted pyramid slope and the upper port of the feed pipe 11 to not interfere with the passage of gunpowder, so as to ensure the quantitative amount of gunpowder entering the feed pipe 11. The small amount of gunpowder carried by the inverted pyramid elastic scraper 41 during the process of moving and blocking the upper port of the feed pipe 11 is negligible.

[0027] By allowing the gunpowder in the opening and closing mold 1 to enter the conveying pipe 11 through the gap between the elastic scraper 41 and the upper port of the conveying pipe 11, and simultaneously sealing the lower port of the conveying pipe 11 with the platform 21, the amount of gunpowder stored in the conveying pipe 11 is kept constant. As the hydraulic rod 12 pushes the guide rod 2 downward, the platform 21 opens the lower port of the conveying pipe 11 to discharge the material, and the inverted platform-shaped shield composed of the elastic scraper 41 and the protective film 42 immediately seals the upper port of the conveying pipe 11 until the conveying pipe 11 completely injects its internal gunpowder into the gunpowder cartridge of the fireworks. This allows the conveying pipe 11 to perform the function of quantitatively discharging gunpowder, keeping the amount of gunpowder injected constant and greatly reducing the possibility of excessive or insufficient gunpowder.

[0028] As a further embodiment of this utility model, a protective ring 3 that fits the port of the firework tube is movably provided on the outer side of the conveying pipe 11, and a sliding rod 31 that slides on the side wall of the conveying pipe 11 is fixedly installed on the protective ring 3.

[0029] Specifically, a spring is fixedly installed between the protective ring 3 and the lower end face of the upper mold, and the spring is arranged in a ring on the outside of the feed pipe 11. The inner ring of the protective ring 3 slides against the side wall of the feed pipe 11, while the outer ring is larger than the outer diameter of the gunpowder cartridge.

[0030] By default, the protective ring 3, located at the lower port of the feed pipe 11, contacts the upper port of the firework gunpowder cartridge first. During the process of inserting the feed pipe 11 into the gunpowder cartridge, the protective ring 3 seals the port of the gunpowder cartridge, effectively solving problems such as gunpowder leakage. The slide rod 31 slides in the air hole 10 opened on the side wall of the feed pipe 11, allowing the protective ring 3 to move vertically in a stable manner. The air hole 10 is provided by the feed pipe 11 itself and is used to prevent the air passage from being blocked during the injection process, which could result in the inability to inject gunpowder.

[0031] As another embodiment provided by this utility model, a slot 40 is provided on the contact block 4, and an elastic trigger head 32 that fits into the slot 40 and pushes the contact block 4 upward is fixedly installed on the slide rod 31.

[0032] Specifically, the slot 40 is a notch on the side wall of the circular contact block 4, and the upper and lower end faces of the contact block 4 are used to form the upper port and the lower port.

[0033] By bringing the contact block 4 close to the platform 21 in the default state, and during the second injection process, as the protective ring 3 moves down back to the lower port of the feed pipe 11, the elastic trigger head 32 is inserted from the upper port of the slot 40 into the lower port of the slot 40. As the protective ring 3 is inserted into the gunpowder cartridge along with the feed pipe 11, the contact block 4 is carried upward by the elastic trigger head 32, and the two remain stably locked until the elastic trigger head 32 carries the contact block 4 to the high position, that is, the position where the upper port of the feed pipe 11 is opened to allow material to pass through in an inverted platform shape.

[0034] As another embodiment further provided by this utility model, the elastic trigger head 32 is decoupled from the slot 40, so that the contact block 4 is driven by the tension spring pre-stored on it to move closer to the platform block 21.

[0035] Specifically, a tension spring is fixedly installed between the contact block 4 and the platform 21. In its default state, the tension spring stops the contact block 4 when it approaches the platform 21.

[0036] After the contact block 4 is carried to a high position, the feed tube 11 is moved down again. The purpose is to make the elastic trigger head 32 continue to slide upward until the arc-shaped elastic element on the elastic trigger head 32 is completely compressed, so that the contact block 4 is unlocked and moves downward under the action of the tension spring on the contact block 4 to restore its deformation. During this process, the elastic scraper 41 scrapes off the residual gunpowder on the inner wall of the feed tube 11 to avoid gunpowder residue affecting the production and processing of fireworks.

[0037] As another embodiment provided in this utility model, the elastic coefficient at the upper end of the arc-shaped elastic trigger head 32 is greater than the elastic coefficient at the lower end.

[0038] Specifically, the cross-section of the elastic trigger head 32 is arc-shaped, but the upper part of the arc is more difficult to deform under pressure.

[0039] As the protective ring 3 moves upward, the upper end of the elastic trigger head 32, which is less susceptible to deformation under pressure, has a locking and carrying function. Therefore, it can pull the tension spring on the contact block 4 to deform and store force. As the hydraulic rod 12 continues to provide downward thrust, the upper end of the elastic trigger head 32, which is less susceptible to deformation, can also deform and slide into the slot 40 until the contact block 4 is decoupled. In the opposite direction, the lower end of the elastic trigger head 32 can easily be locked into the slot 40 to form a docking and carrying function. This completes the inverted truncated pyramid shape formed by the elastic scraper 41 and the protective film 42 to assist the feed pipe 11 in downward squeezing and discharging of the material, thereby improving the stability of the gunpowder discharge.

[0040] Working principle: The gunpowder in the opening and closing mold 1 enters the conveying pipe 11 through the gap between the elastic scraper 41 and the upper port of the conveying pipe 11. Simultaneously, the platform 21 seals the lower port of the conveying pipe 11, maintaining a constant amount of gunpowder in the pipe. As the hydraulic rod 12 pushes the guide rod 2 downwards, the platform 21 opens the lower port of the conveying pipe 11 to discharge the gunpowder. The inverted platform-shaped barrier formed by the elastic scraper 41 and the protective film 42 immediately seals the upper port of the conveying pipe 11, until the gunpowder inside the conveying pipe 11 is completely discharged. The gunpowder is completely injected into the gunpowder tube of the fireworks, so that the feed pipe 11 can perform the function of quantitatively discharging gunpowder, keeping the amount of gunpowder injected constant. After the contact block 4 is carried to a high position, the feed pipe 11 is moved down again. The purpose is to make the elastic trigger head 32 continue to slide upward until the arc-shaped elastic element on the elastic trigger head 32 is completely compressed, so that the contact block 4 is unlocked and moves downward under the action of the tension spring on the contact block 4 to restore its deformation. During this process, the elastic scraper 41 scrapes off the residual gunpowder adhering to the inner wall of the feed pipe 11.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A firework production gunpowder ration filling equipment comprising an open-close mold (1) provided with a plurality of material conveying pipes (11), characterized in that, Also include the hydraulic rod (12) installed on the opening and closing mold (1), the end of the hydraulic rod (12) is fixedly installed in the guide rod (2) in the material conveying pipe (11), the end of the guide rod (2) is fixedly installed with the table block (21) which is attached to the lower end of the material conveying pipe (11); The guide rod (2) is provided with a receiving block (4) which is slidably arranged on the guide rod (2), the receiving block (4) is circumferentially provided with elastic wipers (41) for blocking the upper port of the material conveying pipe (11), and the adjacent elastic wipers (41) are fixedly installed with protective films (42).

2. The gunpowder ration filling equipment for firework production according to claim 1, characterized in that, The outer side of the material conveying pipe (11) is movably provided with a protective ring (3) which is attached to the port of the firework tube, and the protective ring (3) is fixedly installed with a sliding rod (31) which is slidably arranged on the side wall of the material conveying pipe (11).

3. The fireworks production gunpowder ration filling equipment according to claim 2, characterized in that, The receiving block (4) is provided with a clamping groove (40), and the sliding rod (31) is fixedly installed with an elastic trigger head (32) which is embedded in the clamping groove (40) and pushes the receiving block (4) to move upward.

4. The fireworks production gunpowder ration filling equipment according to claim 3, characterized in that, The elastic trigger head (32) is decoupled from the clamping groove (40), so that the receiving block (4) is driven by the tension spring on it to move close to the table block (21).

5. The fireworks production gunpowder ration filling equipment according to claim 4, characterized in that, The upper end of the arc-shaped elastic trigger head (32) has a greater elastic coefficient than the lower end.

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