A solid propellant stripper

Abstract

The utility model belongs to solid propellant technical field provides a kind of solid propellant draw device, including horizontal drive arrangement, vertical draw device and fixed clamping device;The vertical draw device includes screw rod (2), crossbeam (3), automatic centering device (4), frame (11), servo motor two;Two screw rods (2) are vertically arranged in the both sides of frame (11), and the both ends of crossbeam (3) are connected with two screw rods (2), and servo motor two is used to drive screw rod (2) rotation;Automatic centering device (4) is set on crossbeam (3).The technical scheme of the utility model can realize the automation of draw process, ensure that die core is pulled out and is perpendicular to charge surface simultaneously, improve product quality, improve work efficiency, and improve draw process intrinsic safety.

Description

Technical Field

[0001] This utility model belongs to the field of solid propellant technology, specifically relating to a solid propellant extraction device. Background Technology

[0002] Solid propellant manufacturing processes mainly include screw pressing, granulation casting, and casting. Casting has wide formulation adaptability and a large range of component variations, and can produce large-sized, complex-shaped propellant grains. It is widely used in the manufacturing of NEPE propellants, composite propellants, and modified double-base propellants. In cast propellant manufacturing, a mold core needs to be placed in the engine beforehand. The kneaded, flowing propellant slurry is then poured into the engine. After solidification, the mold core is removed, and the propellant charge of the specified shape is obtained after shaping. Current mold-pulling processes use manual methods for mold pulling, which makes it difficult to control the pulling direction, cannot guarantee vertical removal of the mold core, easily damages the product, and may cause impacts, posing safety hazards. Utility Model Content

[0003] (a) Technical problems to be solved The technical problem this utility model aims to solve is that the existing mold-pulling process uses manual mold-pulling, which makes it difficult to control the direction of mold-pulling, cannot guarantee that the mold core is pulled out vertically, is easy to damage the product, and may also cause collisions, posing safety hazards.

[0004] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides a solid propellant extraction device, including a horizontal driving device, a vertical extraction device, and a fixing clamping device; The vertical drafting device includes lead screws 2, a crossbeam 3, an automatic centering device 4, a frame 11, and a servo motor 2; two lead screws 2 are vertically arranged on both sides of the frame 11, and the two ends of the crossbeam 3 are connected to the two lead screws 2; the servo motor 2 is used to drive the lead screws 2 to rotate; the automatic centering device 4 is arranged on the crossbeam 3. The automatic centering device includes a slider 4-4 and a hook 4-2. The slider 4-4 is slidably connected to the middle of the crossbeam 3. A spring 4-3 is installed on each side of the slider 4-4. The two ends of the spring 4-3 are in contact with the stepped surface on the crossbeam 3 and the end face of the slider 4-4, respectively. The spring 4-3 is in a compressed state. The hook 4-2 is located below the slider 4-4. The horizontal drive device includes a guide rail 1 and a servo motor 1; the guide rail 1 is horizontally set, the frame 11 of the vertical drafting device is slidably connected to the guide rail 1, and the servo motor 1 drives the frame 11 to translate to directly above the solid propellant charge 8 through a gear and rack mechanism. The fixing and clamping device includes a base plate 7 and a three-jaw chuck 6; the three-jaw chuck 6 is fixed on the base plate 7 and is used to vertically clamp the solid propellant charge 8; a lifting ring 9 is provided at the center of the top of the mold core of the solid propellant charge 8.

[0005] Among them, guide rail 1 is a split double guide rail.

[0006] Among them, slider 4-4 has an off-center load floating amount on the crossbeam, and the floating amount is set to 3-5mm on one side.

[0007] Among them, hook 4-2 is matched with lifting ring 9.

[0008] Servo motor 2 is mounted on top of the frame.

[0009] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: it can realize the automation of the demolding process, while ensuring that the mold core is perpendicular to the drug surface when it is pulled out, thereby improving product quality, increasing work efficiency, and enhancing the inherent safety of the demolding process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the drafting device of this utility model; Figure 2 This is a schematic diagram of the automatic centering device. In the diagram: 1-guide rail, 2-lead screw, 3-crossbeam, 4-automatic centering device, 5-servo motor 1, 6-three-jaw chuck gripper, 7-base plate, 8-solid propellant charge, 9-lifting ring, 10-mold core, 11-integral frame. Detailed Implementation

[0011] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. Example 1

[0012] An automatic mold-pulling device for demolding propellant in this embodiment includes a horizontal drive device, a vertical mold-pulling device, and a fixing clamping device.

[0013] The horizontal drive device mainly consists of guide rail 1 and servo motor 5, which can achieve precise positioning of the vertical drafting device above.

[0014] The vertical mold extraction device mainly consists of an overall frame 11, a servo motor 2, a lead screw 2, a crossbeam 3, an automatic centering device 4 on the crossbeam, and a hook 4-2. The hook is connected to the lifting ring 9 above the mold core. The servo motor 2 is installed above the overall frame, the lead screw is on both sides of the frame, and the crossbeam is connected to the lead screw. The motor drives the lead screws on both sides to lift the crossbeam simultaneously, so as to achieve the purpose of smoothly and smoothly extracting the mold core 10.

[0015] The fixing and clamping device consists of a base plate 7 and a three-jaw chuck 6. During demolding, the solid propellant charge is clamped by the three-jaw chuck to achieve the purpose of fixing.

[0016] The horizontal drive unit adopts a split-type double-guide rail load-bearing frame, driven by gears and racks on both sides. Its main function is to provide power to move the vertical extraction device horizontally to directly above the engine propellant charge. The vertical extraction device uses a split structure to form the lifting frame. Both sides are equipped with screw mechanisms to ensure stable lifting. A lifting ring is installed below the crossbeam. After connecting the lifting ring to the mold core, the servo motor provides power to generate an upward pulling force, pulling the mold core out of the engine propellant charge.

[0017] Figure 2 As an automatic centering device, a spring 4-3 is installed on each side of the device. The springs are pre-compressed during assembly to prevent the slider 4-4 from wobbling during normal movement and keep it in the center position. At the same time, a certain off-center floating amount is provided, with the floating amount set to 3-5mm on each side. This ensures that the mold core is perpendicular to the drug loading end face during the demolding process, avoids tearing of the drug surface due to uneven force, and prevents squeezing of the drug column, thereby improving product quality and enhancing the inherent safety of the demolding process.

[0018] During demolding, the engine propellant charge is placed above the three-jaw chuck and clamped and fixed by the three-jaw chuck. The vertical demolding device is then moved horizontally to directly above the solid propellant charge 8. The hook 4-2 below the automatic centering device is connected to the lifting ring 9 on the mold core. Personnel are evacuated from the site, and the demolding device is started to automatically and remotely complete the demolding. This can reduce the labor intensity of personnel and improve the safety of the demolding process.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A solid propellant stripper, characterized by, Includes a horizontal drive device, a vertical drafting device, and a fixing clamping device; The vertical drafting device includes lead screws (2), a crossbeam (3), an automatic centering device (4), a frame (11), and a second servo motor; the two lead screws (2) are vertically arranged on both sides of the frame (11), and the two ends of the crossbeam (3) are connected to the two lead screws (2); the second servo motor is used to drive the lead screws (2) to rotate; the automatic centering device (4) is arranged on the crossbeam (3); The automatic centering device includes a slider (4-4) and a hook (4-2). The slider (4-4) is slidably connected to the middle of the crossbeam (3). A spring (4-3) is installed on each side of the slider (4-4). The two ends of the spring (4-3) are in contact with the stepped surface on the crossbeam (3) and the end face of the slider (4-4), respectively. The spring (4-3) is in a compressed state. The hook (4-2) is located below the slider (4-4). The horizontal drive device includes a guide rail (1) and a servo motor; the guide rail (1) is set horizontally, and the frame (11) of the vertical drafting device is slidably connected to the guide rail (1). The servo motor drives the frame (11) to translate directly above the solid propellant charge (8) through a gear and rack mechanism. The fixing and clamping device includes a base plate (7) and a three-jaw chuck (6); the three-jaw chuck (6) is fixed on the base plate (7) and is used to vertically clamp the solid propellant charge (8); a lifting ring (9) is provided at the center of the top of the mold core of the solid propellant charge (8).

2. The solid propellant extraction device as described in claim 1, characterized in that, The guide rail (1) is a split double guide rail.

3. The solid propellant extraction device as described in claim 1, characterized in that, The slider (4-4) has an off-center floating amount on the crossbeam, with the floating amount set to 3-5mm on one side.

4. The solid propellant extraction device as described in claim 1, characterized in that, During demolding, the hook (4-2) and the lifting ring (9) are engaged.

5. The solid propellant stripper of claim 1 wherein, Servo motor 2 is mounted on top of the frame.

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