A forming device for producing an aircraft model blank

Abstract

The utility model relates to a kind of forming devices for aircraft model blank production, including installation base, on the installation base, by supporting component, the molding assembly capable of constructing blank mold cavity is placed, and on the installation base, reversely-annotated pressurizing component that can be lifted and inserted the molding assembly is also provided, the first support column of the supporting component suspends the lower mould body of the molding assembly and supports above the installation base, and the lifting support mechanism of the supporting component is supported on the installation base according to the mode that the upper mould body of the molding assembly can be lifted and suspended above the lower mould body;The reversely-annotated pressurizing component is inserted on the bottom surface of the lower mould body according to the mode that the insertion depth can be changed.The utility model can improve the sufficiency and saturation of casting liquid filling by providing the mode of pressurizing supplementary casting liquid, so that the mold cavity can be effectively filled with pressurized casting liquid and the surface quality after blank solidification is improved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft model production equipment technology, and in particular to a molding device for producing aircraft model blanks. Background Technology

[0002] Aircraft models are created by adjusting a finished aircraft to a certain scale. As essential tools for aeronautical research and aircraft product demonstration, aircraft models typically require high surface quality to ensure effective testing and display. Therefore, higher demands are placed on the molds used in aircraft model casting. Currently, aircraft model production is primarily achieved through casting molds, also known as molds, which are created by scaling down the actual aircraft to form the mold cavity.

[0003] However, existing casting molds often have problems such as insufficient filling of the mold cavity area far from the injection port, resulting in cavity voids and insufficient filling saturation. As a result, the surface of the cast blank often has more defects such as air holes and voids, which reduces the surface quality of the mold blank and cannot meet the subsequent testing and display requirements, resulting in a low overall production yield. Utility Model Content

[0004] The purpose of this invention is to provide a molding device for producing aircraft model blanks that can improve the saturation and fullness of the molten casting by providing pressurized molten casting, thereby effectively filling the mold cavity with pressurized molten casting and improving the surface quality of the blank after curing. This solves the problem of low production yield and numerous defects in existing casting mold production, which results in many air holes in the cast aircraft models.

[0005] The technical solution adopted by this utility model is as follows: a molding device for producing aircraft model blanks, including a mounting base, on which a molding component capable of constructing a mold cavity for the blank is mounted by a support assembly, and a back-injection pressurizing assembly that can be vertically inserted into the molding component is also provided on the mounting base, wherein the first support column of the support assembly suspends and supports the lower mold body of the molding component above the mounting base, and the lifting support mechanism of the support assembly supports the upper mold body of the molding component on the mounting base in a manner that allows it to be vertically suspended above the lower mold body; the back-injection pressurizing assembly is inserted into the bottom surface of the lower mold body in a manner that allows for changing the insertion depth.

[0006] According to a preferred embodiment, a lower mold cavity is formed on the top surface of the lower mold body of the molding assembly, and a backfilling groove penetrating the lower mold body is formed on the bottom surface of the lower mold cavity. The backfilling pressurization assembly is inserted into the backfilling groove in a manner that adjustably fills the backfilling groove.

[0007] According to a preferred embodiment, a guide and positioning vertical hole is provided on the top surface of the lower mold body facing the upper mold body, and an upwardly extending positioning protrusion is also provided between the guide and positioning vertical hole and the lower mold cavity.

[0008] According to a preferred embodiment, an upper mold cavity matching the lower mold cavity is provided at the center of the bottom surface of the upper mold body, and a guide and correction insert corresponding to the arrangement position of the guide and correction vertical hole and matching its cavity contour is also provided on the bottom surface of the upper mold body.

[0009] According to a preferred embodiment, a positioning ring groove corresponding to the positioning protrusion is further provided on the bottom surface of the upper mold body located between the upper mold cavity and the guide and positioning insert; an injection port communicating with the upper mold cavity is also provided on the top surface of the upper mold body.

[0010] According to a preferred embodiment, a lower outward electromagnetic plate is also connected to the side of the lower mold body; and an upper outward electromagnetic plate corresponding to the lower outward electromagnetic plate is also provided on the side of the upper mold body.

[0011] According to a preferred embodiment, the backfill pressurization assembly includes a lifting adjustment mechanism supported on the mounting base, an initial position adjustment mechanism mounted on the axial upper end of the lifting adjustment mechanism, and a pressurization plunger that adjustably fills the backfill filling slot.

[0012] According to a preferred embodiment, the mounting plate of the initial position adjustment mechanism is installed at the top of the lifting adjustment mechanism, and an adjustment screw is inserted into the mounting plate. Limiting nuts are threaded onto the rod body of the adjustment screw above and below the mounting plate. The upper axial end of the adjustment screw is rotatably connected to the support plate seat, and a guide square rod that is arranged parallel to the adjustment screw and guides through the mounting plate is also connected to the lower surface of the support plate seat.

[0013] According to a preferred embodiment, the pressure plunger is mounted on the support plate seat.

[0014] The beneficial effects of this utility model are:

[0015] The film-forming component of this application can construct a mold cavity with high stability, thereby ensuring structural stability during pressure casting and improving casting quality and yield. The back-injection pressurization component of this application can cooperate with the film-forming component to construct a molten casting injection structure, enabling the back-injection pressurization component to refill the mold cavity area far from the injection port with molten casting through reverse pressurization compensation. This improves the saturation and filling of the molten casting in the mold cavity, effectively eliminating cavity voids. Furthermore, the highly saturated and pressurized molten casting reduces the possibility of shrinkage collapse and the generation of porosity and voids during solidification, improving the surface smoothness and integrity of the solidified blank, and enhancing the surface quality and machining yield of the casting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred molding device for producing aircraft model blanks proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a preferred molding device for producing aircraft model blanks during reverse injection filling, as proposed in this utility model.

[0018] Figure 3 This is a partial planar schematic diagram of the lower mold body of a preferred molding device for producing aircraft model blanks proposed in this utility model;

[0019] Figure 4 This is a partial planar structural diagram of the upper mold body of a preferred molding device for producing aircraft model blanks proposed in this utility model.

[0020] List of reference numerals

[0021] 1: Base; 2: Support assembly; 3: Mold assembly; 4: Back-injection pressurization assembly; 21: First support column; 22: Lifting support mechanism; 221: Hydraulic lifting column; 222: Suspended mounting plate; 31: Lower mold body; 32: Upper mold body; 311: Lower mold cavity; 312: Back-injection filling hole groove; 313: Guide and alignment vertical hole; 314: Positioning convex ring; 315: Lower outward electromagnetic plate; 321: Upper mold cavity; 322: Guide and alignment insert; 323: Positioning ring groove; 324: Injection port; 325: Upper outward electromagnetic plate; 41: Lifting adjustment mechanism; 42: Initial position adjustment mechanism; 43: Pressurization plunger; 421: Mounting plate; 422: Adjusting screw; 423: Limit nut; 424: Support plate seat; 425: Guide square rod. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are for the purpose of helping to understand this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and do not have any sequential or technical meaning.

[0024] The following is a detailed explanation with reference to the accompanying drawings.

[0025] Example 1

[0026] This application provides a molding apparatus for producing aircraft model blanks, which includes a mounting base 1, a support assembly 2, a molding assembly 3, and a back injection pressurization assembly 4.

[0027] according to Figure 1-4In one specific embodiment shown, the mounting base 1 provides a raised assembly platform for easy overall transfer and placement. A molding assembly 3, capable of constructing the mold cavity of the blank, is mounted on the mounting base 1 via a support assembly 2. A back-injection pressure assembly 4, which can be vertically inserted into the molding assembly 3 to assist in the pressure casting of the aircraft model blank within the mold cavity of the molding assembly 3, is also provided on the mounting base 1. The first support columns 21 of the support assembly 2 are distributed at the four corners, suspending and supporting the lower mold body 31 of the molding assembly 3 above the mounting base 1. The lifting support mechanism 22 of the support assembly 2 supports the upper mold body 32 of the molding assembly 3 on the mounting base 1 in a manner that allows it to be vertically suspended above the lower mold body 31. The back-injection pressure assembly 4 is inserted into the bottom surface of the lower mold body 31 in a manner that allows for adjustable insertion depth. This allows the back-injection pressure assembly 4 and the lower mold body 31 to cooperate in defining the complete lower mold cavity contour, while the upper mold body 32 defines the upper mold cavity contour. Together, these three components work to construct the complete outer contour surface shape of the aircraft model blank. The film-forming assembly 3 provided in this application can construct a mold cavity with high stability, thereby ensuring structural stability during pressure casting and improving casting quality and yield. The back-injection pressurization component 4 provided in this application can cooperate with the film-forming component 3 to construct a casting liquid injection structure. This allows the back-injection pressurization component 4 to refill the mold cavity area far from the injection port with casting liquid through reverse pressurization compensation. This improves the saturation and filling of the casting liquid in the mold cavity, effectively eliminating cavity voids. Furthermore, the highly saturated and pressurized casting liquid can reduce the possibility of shrinkage and collapse during solidification, thus reducing the likelihood of porosity and voids. This improves the surface smoothness and integrity of the solidified blank, thereby enhancing the surface quality and processing yield of the casting.

[0028] Preferably, the four first support columns 21 are distributed at the four corners and supported on the bottom corners of the lower mold body 31, and are fixedly connected to the lower mold body 31 by welding or other means. Their axial lower ends are also fixed to the mounting base 1 by welding or insert connection. Preferably, the lifting support mechanism 22 includes hydraulic lifting columns 221 capable of dynamically adjusting the support height, and a suspended mounting plate 222 supported by multiple hydraulic lifting columns 221. Preferably, the upper mold body 32 is mounted on the lower surface of the suspended mounting plate 222. Specifically, the upper mold body 32 is connected to the suspended mounting plate 222 by corner seats and countersunk screws penetrating the corner seats. Preferably, the four hydraulic lifting columns 221 are distributed at the four corners and connected to the bottom surfaces of the four corners of the suspended mounting plate 222, and the axial upper and lower ends of the hydraulic lifting columns 221 can be connected to the suspended mounting plate 222 and the mounting base 1 by welding or threaded insert connection, respectively, to form a stable connection structure. Preferably, the hydraulic lifting column 221 is a GH690A type electro-hydraulic lifting rod capable of controllable reciprocating extension and retraction of a specific length by setting a movement distance. Specifically, its extension and retraction process can be pre-programmed via a control chip or controlled in real-time by the operator according to usage requirements. More preferably, a distance sensor is provided between the lower mold body 31 and the upper mold body 32, so that when the two are effectively in contact, the hydraulic lifting column 221 can stop its shortening movement under the drive of the PLC control module based on the sensor feedback data, and then reset and extend again under the manual adjustment of the operator, thereby separating the lower mold body 31 and the upper mold body 32.

[0029] Preferably, a lower mold cavity 311 is formed on the top surface of the lower mold body 31 of the molding assembly 3. More preferably, a backfilling groove 312 penetrating the lower mold body 31 is formed on the bottom surface of the lower mold cavity 311, which defines at least part of the wing and nose contours of the aircraft model blank. Specifically, the backfilling pressurization assembly 4 is inserted into the backfilling groove 312 from bottom to top in a manner that adjustably fills the backfilling groove 312. Preferably, guide and positioning vertical holes 313 are formed at four corners on the top surface of the lower mold body 31 facing the upper mold body 32. Preferably, an upwardly extending positioning protrusion ring 314 is also provided between the guide and positioning vertical holes 313 and the lower mold cavity 311. Preferably, an upper mold cavity 321 matching the lower mold cavity 311 is formed at the center of the bottom surface of the upper mold body 32. Further preferably, a guide and alignment post 322 is provided on the bottom surface of the upper mold body 32, corresponding to the arrangement position of the guide and alignment vertical hole 313 and matching its cavity contour. Preferably, a positioning ring groove 323 corresponding to the positioning protrusion 314 is also provided on the bottom surface of the upper mold body 32 between the upper mold cavity 321 and the guide and alignment post 322. Preferably, an injection port 324 communicating with the upper mold cavity 321 and located at the tail fin position of the aircraft model blank is provided on the top surface of the upper mold body 32. Preferably, the injection port 324 can be quickly connected to the output port of a pressure injection machine that can controllably output molten metal casting liquid. Preferably, a sealing gasket that can further improve the sealing performance is embedded in the top wall of the positioning ring groove 323. Preferably, a lower outward electromagnetic plate 315 that can enhance the mating and bonding strength between the lower mold body 31 and the upper mold body 32 by welding or integral molding is also connected to the side of the lower mold body 31 by magnetic attraction. Preferably, an upper outward electromagnetic plate 325 corresponding to the lower outward electromagnetic plate 315 is also provided on the side of the upper mold body 32 by welding or integral molding. Preferably, the lower outward electromagnetic plate 315 and the upper outward electromagnetic plate 325 are connected to an external power supply and controller via external wires. Specifically, the connected cables can be externally attached and extended outward from the surface of the plate and the mold body. Specifically, the lower outward electromagnetic plate 315 and the upper outward electromagnetic plate 325 provided in this application can be set to a single power and intensity of electromagnetic attraction force, and there is no need to adjust the electromagnetic attraction force. They are mainly used to cooperate with the hydraulic lifting column 221 to ensure the positional stability of the upper mold body 32, so that the upper mold body 32 will not move up and down relative to the lower mold body 31, thereby ensuring the stability of the constructed mold cavity. Preferably, the lower outward-extending electromagnetic plate 315 and the upper outward-extending electromagnetic plate 325 are two GHXS61Q1H electromagnets of the same model but with opposite magnetic properties, which can generate mutual attraction to ensure magnetic circuit compatibility between the two. They can generate strong magnetic attraction when energized, and there is no magnetic attraction between them when de-energized, which facilitates the disassembly of the mold.Specifically, the magnetic top surface of the lower outward-extending electromagnetic plate 315 is approximately flush with the upper surface of the lower mold body 31, and the magnetic bottom surface of the upper outward-extending electromagnetic plate 32 is approximately flush with the lower surface of the upper mold body 32. Thus, when the upper mold body 32 and the lower mold body 31 are joined to form a seamless mold cavity, the upper outward-extending electromagnetic plate 325 can adhere to the lower outward-extending electromagnetic plate 315 and generate a strong magnetic attraction when energized, ensuring the stability of the joining between the upper mold body 32 and the lower mold body 31. The guide and alignment vertical hole 313 and the guide and alignment insert 322 provided in this application are both combinations of cones and cylinders with matching dimensions, enabling them to correct the joining position of the upper mold body 32 and the lower mold body 31. This ensures that the upper mold cavity 321 and the lower mold cavity 311 can be accurately joined to form a complete mold cavity, avoiding misalignment that would affect the mold cavity forming quality. The positioning protrusion 314 and positioning groove 323 provided in this application are correspondingly joined together to form a bent joint surface, thereby improving the sealing and stability of the joint between the upper mold body 32 and the lower mold body 31, avoiding misalignment of the upper mold body 32 and the lower mold body 31 caused by the impact of molten casting input during the injection process, and improving the stability of the mold cavity molding. The lower outward electromagnetic plate 315 and the upper outward electromagnetic plate 325 provided in this application can cooperate with each other for magnetic attraction and limiting, thereby ensuring the stability and strength of the splicing combination of the upper mold body 32 and the lower mold body 31, thus improving the molding stability and strength of the mold cavity.

[0030] Preferably, the backfill pressurization assembly 4 includes a lifting adjustment mechanism 41 supported on the mounting base 1, an initial position adjustment mechanism 42 installed at the axial upper end of the lifting adjustment mechanism 41, and a pressurization plunger 43 that adjustably fills the backfill filling slot 312. Preferably, the lifting adjustment mechanism 41 includes multiple hydraulic lifting rods arranged in an array and capable of synchronous equidistant lifting movements. Specifically, the hydraulic lifting rods constituting the lifting adjustment mechanism 41 can be GH690B type high-thrust electric-driven hydraulic lifting rods that can be set to perform reciprocating extension and retraction movements of a specific length and have a large thrust to perform pressurization and upward pushing movements. Preferably, the mounting plate 421 of the initial position adjustment mechanism 42 is installed at the top of the lifting adjustment mechanism 41. Preferably, an adjustment screw 422 is inserted into the mounting plate 421. More preferably, limiting nuts 423 are threaded onto both the upper and lower parts of the adjusting screw 422 above and below the mounting plate 421, thereby limiting the relative position between the adjusting screw 422 and the mounting plate 421 through the mutual cooperation of the two limiting nuts 423. Preferably, the upper axial end of the adjusting screw 422 is rotatably connected to the support plate seat 424. Preferably, the lower surface of the support plate seat 424 is also connected to a guide square rod 425 that is arranged parallel to the adjusting screw 422 and guides through the mounting plate 421. Preferably, the upper axial end of the adjusting screw 422 is connected to the support plate seat 424 through a rotating bearing, that is, the inner ring of the rotating bearing is fixedly fitted onto the adjusting screw 422 by interference fit, welding or other means, and the outer ring of the rotating bearing is fixed to the support plate seat 424 by welding, thereby realizing the rotatable connection between the adjusting screw 422 and the support plate seat 424. Preferably, a through square hole adapted to the guide rod 425 is provided on the mounting plate 421, thereby limiting the movable direction of the guide rod 425. Preferably, the pressure plunger 43 is installed on the support plate seat 424 by welding, threaded connection, or other means, so that the pressure plunger 43 is movably inserted into the backfilling groove 312 in a manner adapted to fit the backfilling groove 312, thereby pressurizing and recasting the molten casting in the backfilling groove 312 back into the molding cavity by back-push compensation, so that the axial top surface of the pressure plunger 43 can cooperate with the cavity wall of the lower mold cavity 311 to form a complete lower mold cavity contour surface, thereby improving the filling saturation of the molten casting and constructing a complete mold cavity contour. Preferably, multiple spaced sealing rings are also fitted on the pressure plunger 43. Specifically, the top surface of the pressure plunger 43 is also fitted with a filler ring made of high-strength silicone material that is resistant to high temperature and corrosion, in order to fill the molding gap between the pressure plunger 43 and the lower mold body 31, improve the flatness and integrity of the lower mold cavity contour surface, and avoid assembly gaps that would affect the surface quality of the blank after molding.

[0031] Preferably, the electrical components involved in this application, such as the hydraulic lifting column 221, the lower outward electromagnetic plate 315, the upper outward electromagnetic plate 325, and the lifting adjustment mechanism 41, are all electrically connected to the controller and the power supply. The control method of this application is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is only used to protect the mechanical device and its mechanical structural features. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0032] For surface connections between components not explicitly specified in this application, conventional bolt connections, snap-fit ​​connections, or fixed connections such as welding can be used. As these are conventional connection methods, this application will not elaborate further on this part. Specifically, the connecting ends of the assembled components all form flange structures, and the two flange structures are connected by bolts, gaskets, or other structures.

[0033] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A molding apparatus for producing aircraft model blanks, comprising a mounting base (1), characterized in that, A molding assembly (3) capable of constructing a mold cavity for a preform is mounted on the mounting base (1) via a support assembly (2), and a back-injection pressurizing assembly (4) that can be vertically inserted into the molding assembly (3) is also provided on the mounting base (1), wherein, The first support column (21) of the support assembly (2) suspends the lower mold body (31) of the molding assembly (3) above the mounting base (1), and the lifting support mechanism (22) of the support assembly (2) supports the mounting base (1) in such a way that the upper mold body (32) of the molding assembly (3) can be lifted and suspended above the lower mold body (31). The back-injection pressurization assembly (4) is inserted into the bottom surface of the lower mold body (31) in a manner that allows for changing the insertion depth.

2. The molding apparatus for producing aircraft model blanks as described in claim 1, characterized in that, A lower mold cavity (311) is provided on the top surface of the lower mold body (31) of the molding assembly (3), and a backfilling groove (312) penetrating the lower mold body (31) is provided on the bottom surface of the lower mold cavity (311). The backfill pressurization assembly (4) is inserted into the backfill filling slot (312) in a manner that adjustably fills the backfill filling slot (312).

3. The molding apparatus for producing aircraft model blanks as described in claim 2, characterized in that, A guide and positioning vertical hole (313) is provided on the top surface of the lower mold body (31) facing the upper mold body (32), and an upwardly extending positioning protrusion (314) is also provided between the guide and positioning vertical hole (313) and the lower mold cavity (311).

4. The molding apparatus for producing aircraft model blanks as described in claim 3, characterized in that, An upper mold cavity (321) matching the lower mold cavity (311) is provided at the center of the bottom surface of the upper mold body (32), and a guide and correction insert (322) corresponding to the arrangement position of the guide and correction vertical hole (313) and matching its cavity contour is also provided on the bottom surface of the upper mold body (32).

5. The molding apparatus for producing aircraft model blanks as described in claim 4, characterized in that, On the bottom surface of the upper mold body (32) located between the upper mold cavity (321) and the guide and positioning insert (322), a positioning ring groove (323) corresponding to the positioning protrusion (314) is also provided; An injection port (324) communicating with the upper mold cavity (321) is also provided on the top surface of the upper mold body (32).

6. The molding apparatus for producing aircraft model blanks as described in claim 5, characterized in that, A lower outward electromagnetic plate (315) is also connected to the side of the lower mold body (31); An upper outward electromagnetic plate (325) corresponding to the lower outward electromagnetic plate (315) is also provided on the side of the upper mold body (32).

7. The molding apparatus for producing aircraft model blanks as described in claim 6, characterized in that, The backfill pressurization assembly (4) includes a lifting adjustment mechanism (41) supported on the mounting base (1), an initial position adjustment mechanism (42) installed at the axial upper end of the lifting adjustment mechanism (41), and a pressurization plunger (43) that adjustably fills the backfill filling slot (312).

8. The molding apparatus for producing aircraft model blanks as described in claim 7, characterized in that, The mounting plate (421) of the initial position adjustment mechanism (42) is installed at the top of the lifting adjustment mechanism (41), and an adjustment screw (422) is inserted on the mounting plate (421). The adjustment screw (422) is threaded with limit nuts (423) on the rod body above and below the mounting plate (421). The upper axial end of the adjusting screw (422) is rotatably connected to the support plate seat (424), and the lower surface of the support plate seat (424) is also connected to a guide square rod (425) that is arranged in parallel with the adjusting screw (422) and guides through the mounting plate (421).

9. The molding apparatus for producing aircraft model blanks as described in claim 8, characterized in that, The pressurized plunger (43) is mounted on the support plate seat (424).

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