Square billet wooden tool for solid propellant charging

Abstract

A square billet wooden tool for solid propellant charging overcomes the safety defects of static prevention and control, friction impact sparks and the like of metal materials in the prior art, and reduces the utilization rate of metal pieces in the field of solid engine charging. According to the square billet tool, the safety defects of static prevention and control, friction impact sparks and the like caused by metal materials are overcome, the wooden square billet tool is installed and fixed through the tenon-and-mortise structure, the safety risk caused by the fact that a metal square billet tool uses metal buckles doped with propellants is avoided, and manufacturing of square billets is completed.

Description

Technical Field

[0001] The utility model relates to a square billet wooden tooling for solid propellant charging, belonging to the technical field of solid engine charging equipment. Background Art

[0002] Existing billet forming tooling is typically made of metal, specifically sheet metal with a thickness of 0.5 to 1.5 mm, to form solid propellant billets. For example, utility model patent CN221021626U discloses a "forming device for prefabricated concrete square piles," which utilizes prefabricated square pile templates, a mold clamping plate, and a position-limiting template to prefabricate concrete square piles. Such metal molds and templates present safety drawbacks in the field of solid propellant propellants, such as static electricity control and friction-impact sparks. Furthermore, the presence of small components such as metal clips in metal billet tooling can easily lead to partial contamination of the solid propellant. Solid propellants have high electrostatic and impact sensitivities and high energy content, making conventional metal billet tooling inadequate for meeting the latest safety requirements. Utility Model Content

[0003] The technical problem solved by the utility model is: to overcome the shortcomings of the existing technology, to provide a wooden square billet tooling for solid propellant charging, and to adopt a mortise and tenon structure to complete the installation and fixation of the wooden square billet tooling, thereby solving the safety risks of using metal clips to mix propellants in metal square billet tooling, as well as the safety defects such as static electricity prevention and control, friction and impact sparks caused by metal materials.

[0004] The technical solution of this utility model is:

[0005] A square billet wooden tooling for solid propellant charge, comprising: a wooden cover, a pin and a box body;

[0006] At least one pin hole is provided on both sides of the wooden cover and the box body, and the size of the pin hole is slightly larger than the size of the pin; the wooden cover is covered on the box body and connected in the form of a mortise and tenon structure through the pin;

[0007] Both the wooden cover and the box body are provided with flanges, and the contact surface between the wooden cover and the box body is polished smooth to reduce the gap between the wooden cover and the box body to avoid leakage of slurry during the loading process; the inner surface of the wooden cover and the box body is also polished smooth.

[0008] Furthermore, the wooden cover and the box body are made of solid wood.

[0009] Furthermore, the wooden cover and the box body are carbonized, and the moisture content is less than 12%.

[0010] Furthermore, the carbonized wooden cover and the box body are sprayed with varnish.

[0011] Furthermore, the pin holes on the wooden cover and the box body are both trapezoidal in shape, and the junction of the two pin holes is the short side of the trapezoid.

[0012] Furthermore, the pin is of an X-shaped structure, and the pin hole ensures that one side is 1 mm larger than the length of the pin.

[0013] Furthermore, the pin is made of polytetrafluoroethylene.

[0014] Furthermore, a kraft paper box with an upward opening similar to a wooden billet is provided in the box body. The paper box is placed in the box body so as to be in close contact with the inner wall of the box body.

[0015] Furthermore, the square billet wooden tooling is used for solid propellant charge.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] (1) The present invention uses wooden square billet tooling made of wood materials through surface treatment to replace the original metal square billet tooling, thus overcoming the original material defects of wood. On the basis of the original effect, it reduces the safety risk of production and effectively prevents and controls the safety defects such as static electric shock, friction and impact sparks caused by metal materials.

[0018] (2) The present invention utilizes the mortise and tenon structure to complete the overall structure, avoiding the use of metal locks and other structures to complete the locking, thus saving the overall design and space;

[0019] (3) The present invention solves the problem of excessive deformation of wood due to heat and moisture by using carbonized wood and varnish;

[0020] (4) The utility model solves the risk of medicine slurry leakage in the wooden billet by using a kraft paper box of appropriate size to be inserted into the wooden billet and using a structural nesting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the tooling of the utility model;

[0022] In the picture: 1. Wooden cover, 2. Pin, 3. Box body DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0024] To overcome the safety defects of metal materials in the existing technology, such as static electricity control and friction and impact sparks, and to reduce the use of metal parts in solid rocket charges, the present utility model provides a wooden square billet tooling for charging, which solves the safety defects caused by metal materials, such as static electricity control and friction and impact sparks. The utility model uses a mortise and tenon structure to complete the installation and fixation of the wooden square billet tooling, eliminating the safety risks of using metal clips to mix propellants in metal square billet tooling, and completes the production of square billets.

[0025] like Figure 1 As shown, the utility model proposes a square wooden tooling for solid propellant charge, comprising: a wooden cover 1, a pin 2 and a box 3;

[0026] At least one pin hole is provided on both sides of the wooden cover 1 and the box body 3, and the size of the pin hole is slightly larger than the size of the pin 2; the wooden cover 1 is covered on the box body 3 and connected in the form of a mortise and tenon structure through the pin 2;

[0027] Both the wooden lid 1 and the box body 3 are provided with flanges. The contact surface between the wooden lid 1 and the box body 3 is polished to minimize the gap between them and prevent leakage of the slurry during charging. The inner surfaces of the wooden lid 1 and the box body 3 are also polished to a smooth surface. The pin holes on the wooden lid 1 and the box body 3 are both trapezoidal in shape, with the junction of the two pin holes forming the short side of the trapezoid. A kraft paper box, similar to the wooden billet, is located within the box body 3, with the opening facing upward. This box is inserted into the box body 3 so that it is tightly attached to the inner wall of the box. The wooden billet tooling described in the present invention is used for charging solid propellants.

[0028] Preferably, the wooden cover 1 and the box body 3 are made of solid wood.

[0029] Preferably, the wooden cover 1 and box body 3 are carbonized to a moisture content of less than 12%. After carbonization, the wooden cover 1 and box body 3 are sprayed with a varnish. The light carbonization protects the square wooden tooling from moisture and cracking in high-temperature and high-humidity environments. The application of the log-specific varnish prevents sawdust from falling from the surface of the square wooden tooling, ensuring a smooth and free-from surface.

[0030] Preferably, the pin 2 is of an X-shaped structure, and the pin hole ensures that one side is 1 mm larger than the length of the pin 2.

[0031] Preferably, the pin 2 is made of polytetrafluoroethylene.

[0032] In this new experiment, personnel first inspected the wooden cover and box body for integrity. Once these were complete, they assembled the cover and box body, securing them securely with pins. Using sulfuric acid paper, they folded a paper box with the opening facing upward along the inner wall of the box. This box was then placed into the box, flush against the inner wall. The wooden box, with the opening facing upward, was then placed into the insulated tank, completing the billet pouring process.

[0033] The utility model solves the safety defects such as static electricity prevention and control, friction and impact sparks caused by metal materials. The utility model adopts mortise and tenon structure to complete the installation and fixation of wooden square billet tooling, solves the safety risk of using metal clips to mix propellant in metal square billet tooling, and completes the production of square billets.

[0034] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

[0035] Parts of the present invention that are not described in detail belong to common knowledge among those skilled in the art.

Claims

1. A wooden tooling for solid propellant charges, characterized in that: include: Wooden cover (1), pin (2) and box body (3); At least one pin hole is provided on both sides of the wooden cover (1) and the box body (3), and the size of the pin hole is slightly larger than the size of the pin (2); the wooden cover (1) is covered on the box body (3) and connected in the form of a mortise and tenon structure through the pin (2); The wooden cover (1) and the box body (3) are both provided with flanges, and the contact surfaces of the wooden cover (1) and the box body (3) are polished smooth to reduce the gap between the wooden cover (1) and the box body (3) to avoid leakage of medicine slurry during the loading process; the inner surfaces of the wooden cover (1) and the box body (3) are also polished smooth.

2. A wooden tooling for solid propellant charges according to claim 1, characterized in that: The wooden cover (1) and the box body (3) are made of solid wood.

3. A wooden tooling for solid propellant charges according to claim 1 or 2, characterized in that: The wooden cover (1) and the box body (3) are carbonized, and the moisture content is less than 12%.

4. A wooden tooling for solid propellant charges according to claim 3, characterized in that: The carbonized wooden cover (1) and the box body (3) are sprayed with varnish.

5. The wooden tooling for solid propellant charge according to claim 1, characterized in that: The pin holes on the wooden cover (1) and the box body (3) are both trapezoidal in shape, and the junction of the two pin holes is the short side of the trapezoid.

6. The wooden tooling for solid propellant charge according to claim 5, characterized in that: The pin (2) is similar to an X-shaped structure, and the pin hole ensures that one side is larger than the length of the pin (2) by 1 mm.

7. A wooden tooling for solid propellant charges according to claim 5 or 6, characterized in that: The pin (2) is made of polytetrafluoroethylene.

8. The wooden tooling for solid propellant charges according to claim 1, characterized in that: A kraft paper box similar to a wooden billet with an opening facing upward is arranged in the box body (3). The paper box is placed in the box body (3) so as to be in close contact with the inner wall of the box body.

9. The wooden tooling for solid propellant charges according to claim 1, characterized in that: The square billet wooden tooling is used for solid propellant charge.

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