Initiating explosive device material upper plate type extrusion molding device

Abstract

The utility model discloses an initiating explosive device material upper plate type extrusion molding device, and relates to the technical field of initiating explosive device material molding granulation equipment. The extrusion molding device comprises a barrel body and a section mold which is connected into the barrel body, and a cavity for materials to pass through is formed in the section mold; the barrel is divided into a pressure-bearing cavity and a forming cavity by the section mold; the pneumatic driving mechanism is used for extruding the materials in the pressure bearing cavity; and the stirring driving mechanism is used for shearing the materials which are extruded to pass through the section mold and then enter the forming cavity. By adjusting the pressure of an air source of the pneumatic driving mechanism, the change of the shape, length or size of formed particles can be finely adjusted, so that higher requirements on the granulation process can be met, and the change research of granulation under a certain pressure and the deformation experiment of the granulation technology within a certain pressure change range can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrotechnic material forming particle equipment, in particular to an upper plate type extrusion molding device for pyrotechnic material. Background Art

[0002] The key technologies in the preparation process of molded particles in special pyrotechnic materials include material selection, molding process and hardening process control; the selection of materials should take into account factors such as combustion performance, mechanical properties and cost; the molding process generally includes extrusion molding, particle preparation and deformation molding.

[0003] The principle of forming particles of special pyrotechnic materials mainly includes mixing, extrusion, drying, screening and coating processes; first, the raw material powder is measured and mixed evenly according to the formula ratio; then, the mixed raw material powder is added to the extruder, and the raw material is extruded and formed by the thrust of the rotating screw; then, the extruded particles are dried to remove moisture, organic solvents, etc.; after drying, the particles that do not meet the standard size are separated and processed through screening technology. Finally, the particles can be coated to improve their combustion performance and stability.

[0004] In the prior art, the raw material is extruded and formed by the thrust of the rotating screw, and it is impossible to conduct a study on the variation of granulation and a deformation experiment of the granulation technology within a certain pressure variation range. Utility Model Content

[0005] In order to solve the existing technical problems, the utility model provides an upper plate type extrusion molding device for pyrotechnic materials.

[0006] The extrusion molding device comprises:

[0007] Cylinder,

[0008] A mold is connected to the cylinder, and a cavity for materials to pass through is formed on the mold; the mold divides the cylinder into a pressure-bearing cavity and a molding cavity;

[0009] A pneumatic drive mechanism, used for squeezing the material in the pressure chamber;

[0010] The stirring drive mechanism is used to shear the material that enters the molding cavity after being extruded through the mold.

[0011] Furthermore, a safety valve is connected to the side wall of the molding cavity.

[0012] Furthermore, a material suction port is provided on the side wall of the pressure chamber;

[0013] A solvent suction port is provided on the side wall of the molding cavity;

[0014] A medicine pellet outlet is arranged on the side wall of the molding cavity.

[0015] Furthermore, the stirring drive mechanism comprises:

[0016] A motor connected to the top of the molding cavity;

[0017] A forming plate is located in the forming cavity and connected to the output end of the motor.

[0018] Furthermore, a transmission shaft is connected to the top of the forming plate, and the transmission shaft is connected to the output end of the motor via an elastic joint structure.

[0019] Furthermore, the pneumatic drive mechanism comprises:

[0020] A cylinder, located directly below the pressure chamber;

[0021] An extrusion plate is movably connected in the pressure-bearing chamber, and the piston rod of the cylinder is connected to the extrusion plate through a universal joint.

[0022] Furthermore, an observation window is provided on the side wall of the molding cavity.

[0023] Furthermore, the extrusion molding device also includes:

[0024] The filter cylinder is located directly below the medicine particle outlet, a filter screen is arranged in the filter cylinder, and a filtrate outlet is arranged on the side wall of the filter cylinder.

[0025] Furthermore, the extrusion molding device also includes:

[0026] AGV mobile loading vehicle, the filter cylinder is located in the AGV mobile loading vehicle.

[0027] The beneficial effects of the technical solution provided by the utility model are as follows: first, the utility model is provided with a barrel, a mold, a pneumatic drive mechanism and a stirring drive mechanism, the mold is connected to the barrel, a cavity for material to pass through is opened inside the mold, the pneumatic drive mechanism is used to extrude the material in the pressure-bearing cavity, the material passes through the cavity inside the mold and is extruded into a fixed shape, the stirring drive mechanism stirs and quickly shears the material passing through the mold to form particles of different lengths or sizes; by adjusting the air source pressure of the pneumatic drive mechanism, the shape, length or size of the formed particles can be slightly adjusted, which can meet the higher requirements for the granulation process, and can realize the change study of granulation under a certain pressure and the deformation experiment of the granulation technology within a certain pressure change range.

[0028] Secondly, a solvent inlet and a medicine particle outlet are provided on the side wall of the forming cavity. When the stirring drive mechanism cuts the material, hot water or other solvents can be delivered from the solvent inlet to soak the formed particles to avoid adhesion of the particles. Adding a suitable solvent also makes the surface and cross-section of the particles smoother. The hot water or solvent drives the particles to suspend and move, avoiding collision and friction between particles and between particles and the cylinder, and drives the particles to be discharged from the forming cavity from the medicine particle outlet.

[0029] In addition, the extrusion molding device also includes: a filter cylinder and an AGV mobile loading vehicle. The particles discharged from the medicine particle outlet are discharged into the filter cylinder together with the solvent. The filter screen in the filter cylinder separates the particles and the solvent. The solvent is discharged and collected from the filtrate outlet. The particles in the filter screen are manually taken out and dried. The AGV mobile loading vehicle structure is convenient for the transportation of molded particles. The large volume of the filter cylinder is convenient for collecting a large number of finished products, reducing the fatigue of personnel caused by multiple operations, and can also realize the collection of finished products more safely and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a structural schematic diagram of an upper plate type extrusion molding device for pyrotechnic materials.

[0031] Figure numerals: 1-cylinder; 2-mold; 3-cavity; 4-pressure chamber; 5-forming chamber; 6-safety valve; 7-material suction port; 8-solvent suction port; 9-granule outlet; 10-motor; 11-forming plate; 12-transmission shaft; 13-cylinder; 14-extrusion plate; 15-filter cylinder; 16-filter screen; 17-filtrate outlet; 18-AGV mobile load vehicle; 19-bracket. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] It should be noted that, in the present embodiment, the orientations or positional relationships indicated by "bottom", "top", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] It should also be noted that, in this embodiment, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figure 1 A device for extruding and molding pyrotechnic materials on a plate includes a bracket 19, a barrel 1, a mold 2, a pneumatic drive mechanism and a stirring drive mechanism; the bracket can be a top plate and a bottom plate, a plurality of support rods are connected between the top plate and the bottom plate, and a support plate is connected in the middle of the support rods; the barrel 1 is fixed on the top plate of the bracket, the mold 2 is connected in the barrel 1, a cavity 3 for material to pass through is opened inside the mold 2, the barrel 1 is divided into a pressure-bearing cavity 4 and a molding cavity 5 by the mold 2, and the pressure-bearing cavity 4 is located below the molding cavity 5; the pneumatic drive mechanism is located at the bottom of the barrel 1, and the stirring drive mechanism is located at the top of the barrel 1; the pneumatic drive mechanism is used to extrude the material in the pressure-bearing cavity 4, the material passes through the mold cavity 3 inside the mold 2, is extruded into a fixed shape and enters the molding cavity 5, the stirring drive mechanism stirs, and quickly shears the material that enters the molding cavity 5 after passing through the mold 2, so as to form particles of different lengths or sizes.

[0037] By adjusting the air source pressure of the pneumatic drive mechanism, the shape, length or size of the formed particles can be slightly adjusted, which can meet the higher requirements of the granulation process, and can realize the study of granulation changes under a certain pressure and the deformation experiment of granulation technology within a certain pressure change range.

[0038] Furthermore, a material suction port 7 is provided on the side wall of the pressure chamber 4, a solvent suction port 8 is provided on the side wall of the molding chamber 5, and a medicine particle outlet 9 is provided on the side wall of the molding chamber 5; valves can be provided at the material suction port 7, the solvent suction port 8 and the medicine particle outlet 9; the material can be sucked into the pressure chamber 4 from the material suction port 7 by a solid pump; when the stirring drive mechanism cuts the material, hot water or other solvents can be delivered from the solvent suction port 8 to wet the already formed particles to avoid adhesion of the particles, and adding a suitable solvent also makes the surface and cross-section of the particles smoother; the hot water or solvent drives the particles to suspend and displace, avoiding collision and friction between particles and between particles and the cylinder, and drives the particles to be discharged from the medicine particle outlet of the molding chamber 5.

[0039] The solvent can be pumped in with pressure and its flow rate can be controlled to avoid excessive solvent residue. The collected solvent can be filtered and reused to improve the utilization rate.

[0040] Furthermore, a safety valve 6 is connected to the side wall of the molding cavity 5. The continuous change of the solvent inside the molding cavity 5 causes the change of the internal pressure of the cavity 5. The gas generated during the granulation process is discharged by the safety valve 6 and filtered or collected to avoid pollution to the environment. The pressure in the molding cavity 5 is balanced by the safety valve 6 so that it can meet the extrusion granulation requirements, while avoiding negative interference caused by excessively high or low pressure, as well as safety hazards such as additional damage to the equipment.

[0041] Furthermore, the stirring drive mechanism includes: a motor 10 and a molding plate 11, the motor 10 is connected to the top of the molding cavity 5, the top of the molding plate 11 is connected to a transmission shaft 12, and the transmission shaft 12 is connected to the output end of the motor 10 through an elastic movable structure; the elastic movable structure, also known as an expansion joint or compensator, is a connecting component widely used in pipeline systems to compensate for the axial, lateral or angular displacement of the pipeline, and can also play a role in shock absorption and noise reduction and protection of pipelines and equipment; its main structure usually includes an inner tube, an outer tube and an elastic element in the middle (such as a rubber ring, a spring, etc.).

[0042] The transmission shaft 12 and the output end of the motor 10 are connected by an elastic joint structure to facilitate the replacement of the forming plate 11, and the gap between the forming plate 11 and the mold 2 can be adjusted by rotating the adjusting nut on the top of the shaft 12 to improve the change of the particle forming size and the surface shape of the incision.

[0043] The material passes through the internal cavity 3 of the mold 2 and is squeezed into a fixed shape. The motor 10 drives the forming plate 11 to shear quickly to form particles of different lengths or sizes. With the optional installation of the forming plate 11, stirring motion is achieved. Driven by the optional installation of the forming plate 11, hot water or solvent drives the particles to suspend and move.

[0044] Furthermore, the pneumatic drive mechanism includes: a cylinder 13 and an extrusion plate 14, the cylinder 13 is connected to the bracket support plate and is located directly below the pressure chamber 4; the extrusion plate 14 is movably connected in the pressure chamber 4, and the piston rod of the cylinder 13 is connected to the extrusion plate 14 through a universal joint, so that the sealing of the piston is more superior, the operation is smoother and the service life of the device is improved.

[0045] Each time the material is put into the mold in a fixed amount, the piston rod of the cylinder 13 moves upward along the specified trajectory, compressing the material to pass through the mold, and the piston moves to the specified position. This is one operation process. By repeating this process, continuous and large-scale granulation of materials can be achieved; material molding is achieved by extrusion, and the requirements for material properties are reduced; compressed air is used as the power source, so that the device can be used in multiple scenarios; by adjusting the air source pressure, the shape, size and incision of the molded particles can be slightly adjusted, which can meet the higher requirements for the granulation process; it can realize the study of granulation changes under a certain pressure and the deformation experiment of granulation technology within a certain pressure change range.

[0046] Furthermore, an observation window is provided on the side wall of the molding cavity 5. The observation window is made of transparent high-strength organic glass, which is convenient for observing the shape change of the material during the granulation process and provides a reference for the subsequent data recording of the granulation.

[0047] Furthermore, the extrusion molding device also includes: a filter cylinder 15 and an AGV mobile loading vehicle 18. The filter cylinder 15 is located in the AGV mobile loading vehicle 18, and the filter cylinder 15 is located directly below the medicine particle outlet 9. A filter screen 16 is provided in the filter cylinder 15, and a filtrate outlet 17 is provided at the bottom of the filter cylinder 15. The particles and solvent discharged from the medicine particle outlet 9 are discharged into the filter cylinder 15 together. The filter screen 16 in the filter cylinder 15 separates the particles and the solvent. The solvent is led out and collected by the filtrate outlet 17. The particles in the filter screen 16 are manually taken out and dried. The AGV mobile loading vehicle structure facilitates the transportation of molded particles, and the larger volume of the filter cylinder 15 facilitates the collection of a large number of finished products, reduces the fatigue of personnel caused by multiple operations, and can also more safely and effectively realize the collection of finished products.

[0048] It is worth noting that the upper plate extrusion molding device for pyrotechnic materials in the utility model is a granulation equipment developed for the continuous production process of special materials. It is mainly used for extrusion molding of pyrotechnic materials after mixing to make granular products with uniform shape, no powder, and no adhesion. The device can be made of stainless steel, which can meet the requirements of materials with certain acidity and alkali; it can use gas / liquid mode to provide power source, which is suitable for granulation process research and analysis of various mixed materials.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pyrotechnic material upper plate extrusion molding device, characterized in that: The extrusion molding device comprises: Cylinder (1), A mold (2) is connected to the cylinder (1), and a cavity (3) for the material to pass through is formed on the mold (2); the mold (2) divides the cylinder (1) into a pressure-bearing cavity (4) and a molding cavity (5); A pneumatic drive mechanism, used for squeezing the material in the pressure chamber (4); The stirring drive mechanism is used to shear the material that enters the molding cavity (5) after being extruded through the mold (2).

2. The upper plate extrusion molding device for pyrotechnic materials according to claim 1 is characterized in that: A safety valve (6) is connected to the side wall of the molding cavity (5).

3. The upper plate extrusion molding device for pyrotechnic materials according to claim 1, characterized in that: A material suction port (7) is provided on the side wall of the pressure-bearing chamber (4); A solvent suction port (8) is provided on the side wall of the molding cavity (5); A medicine pellet outlet (9) is provided on the side wall of the molding cavity (5).

4. The upper plate extrusion molding device for pyrotechnic materials according to claim 1, characterized in that: The stirring drive mechanism comprises: A motor (10) connected to the top of the molding cavity (5); A forming plate (11) is located in the forming cavity (5) and is connected to the output end of the motor (10).

5. The upper plate extrusion molding device for pyrotechnic materials according to claim 4, characterized in that: A transmission shaft (12) is connected to the top of the forming plate (11), and the transmission shaft (12) is connected to the output end of the motor (10) via an elastic joint structure.

6. The upper plate extrusion molding device for pyrotechnic materials according to claim 1, characterized in that: The pneumatic drive mechanism comprises: A cylinder (13) located directly below the pressure-bearing chamber (4); An extrusion plate (14) is movably connected in the pressure-bearing chamber (4), and a piston rod of the cylinder (13) is connected to the extrusion plate (14) via a universal joint.

7. The upper plate extrusion molding device for pyrotechnic materials according to claim 1, characterized in that: An observation window is provided on the side wall of the molding cavity (5).

8. The upper plate extrusion molding device for pyrotechnic materials according to claim 3, characterized in that: The extrusion molding device also includes: The filter cylinder (15) is located directly below the medicine pellet outlet (9), a filter screen (16) is arranged inside the filter cylinder (15), and a filtrate outlet (17) is arranged on the side wall of the filter cylinder (15).

9. The upper plate extrusion molding device for pyrotechnic materials according to claim 8, characterized in that: The extrusion molding device also includes: An AGV mobile loading vehicle (18), wherein the filter cylinder (15) is located inside the AGV mobile loading vehicle (18).

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