Forming die of wind power casting

Abstract

The utility model relates to the technical field of molds, and discloses a forming mold of a wind power casting, which comprises a lower mold sand box, a lower mold sand box, an upper mold sand box, a lower mold sand box, a lower mold sand box, a lower mold sand box and a first positioning groove, and the lower mold sand box is provided with a lower mold sand cavity and a first positioning groove communicated with the lower mold sand cavity; the iron mold assembly comprises an iron mold body and an iron mold cover plate which are designed in a split mode, one end of the iron mold body is detachably clamped into the first positioning groove, and the iron mold cover plate is detachably arranged above the lower mold sand box and abuts against the side, away from the first positioning groove, of the iron mold body. The forming die for the wind power casting is simple in structure, easy to disassemble and assemble, stable in performance and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field, concretely relates to a forming mould of wind power casting. BACKGROUND

[0002] Wind power casting, especially the base, hub, bearing seat and other large components of wind driven generator, because of its large size, complex structure and high requirement for mechanical properties, brings severe challenge to the design and manufacture of casting mould. The traditional wind power casting mould is composed of upper mould sand box, lower mould sand box and iron mould between the two, in order to facilitate demoulding, the two ends of iron mould are detachably connected with upper mould sand box and lower mould sand box through bolts. However, in actual production, this traditional design exposes two main problems: first, during assembly, the connecting mode between iron mould and sand box is not accurate enough, eccentricity phenomenon is prone to occur, which directly affects the geometric precision of casting; second, iron mould will experience significant thermal expansion and contraction under high temperature casting environment, leading to shape change, which not only shortens the service life of iron mould, but also may cause uneven stress distribution inside casting, reducing the qualified rate of casting. SUMMARY

[0003] The utility model aims at the above problems existing in prior art, and provides a forming mould of wind power casting, which has simple structure, is easy to disassemble and assemble, stable in performance and long in service life.

[0004] The utility model can be realized by the following technical scheme, a forming mould of wind power casting, comprising:

[0005] Lower mould sand box, the lower mould sand box has a lower mould sand cavity, and a first positioning groove in communication with the lower mould sand cavity;

[0006] Iron mould assembly, the iron mould assembly includes split designed iron mould body and iron mould cover plate, one end of the iron mould body is detachably clamped into the first positioning groove, and the iron mould cover plate is detachably arranged above the lower mould sand box and abuts against the side of the iron mould body away from the first positioning groove.

[0007] In the above-mentioned forming mould of wind power casting, the first positioning groove is above the lower mould sand cavity and coaxially arranged with the lower mould sand cavity, and the inner diameter of the first positioning groove is greater than the inner diameter of the lower mould sand cavity.

[0008] In the above-mentioned forming mould of wind power casting, the iron mould body includes a lower connecting end, the lower connecting end is detachably clamped into the first positioning groove, and the outer wall of the lower connecting end abuts against the inner wall of the first positioning groove.

[0009] In the forming die for the wind power casting, the iron mold cover plate has a through hole for the iron mold body to pass through, the diameter of the through hole is smaller than the diameter of the lower connecting end, and the iron mold cover plate abuts against the side of the lower connecting end away from the first positioning groove.

[0010] In the forming die for the wind power casting, the lower mold sand box is further provided with a second positioning groove, the second positioning groove extends outward along the first positioning groove, and the iron mold cover plate is provided with a limiting structure clamped into the second positioning groove.

[0011] In the forming die for the wind power casting, the second positioning groove and the limiting structure are respectively provided with two groups, which are symmetrically arranged along the center line of the lower mold sand cavity, and the second positioning groove and the limiting structure are in concave-convex cooperation.

[0012] In the forming die for the wind power casting, the lower mold sand cavity has a cavity part protruding outward along the first positioning groove, the second positioning groove is above the cavity part and communicates with the cavity part.

[0013] In the forming die for the wind power casting, the lower mold sand box is circumferentially provided with a plurality of first mounting holes, the iron mold cover plate is circumferentially provided with a plurality of second mounting holes corresponding to the first mounting holes one by one, and the first mounting holes and the second mounting holes are detachably connected through bolts.

[0014] In the forming die for the wind power casting, the upper mold sand box is further provided with a plurality of third mounting holes, the iron mold body further includes an upper connecting end, the upper connecting end is provided with a plurality of fourth mounting holes corresponding to the third mounting holes one by one, and the third mounting holes and the fourth mounting holes are detachably connected through bolts.

[0015] In the forming die for the wind power casting, the iron mold body has a containing cavity arranged along the length direction of the iron mold body and penetrating through the iron mold body, the upper mold sand box has an upper mold sand cavity communicating with the containing cavity, and the lower mold sand cavity communicates with the containing cavity.

[0016] Compared with the prior art, the beneficial effects of the utility model are that: through setting the first positioning groove communicated with the lower mold sand mold cavity in the lower mold sand box, the iron mold assembly includes the split design iron mold body and the iron mold cover plate, and the one end of the iron mold body is detachably clamped into the first positioning groove, and the iron mold cover plate is detachably arranged above the lower mold sand box and abuts against the iron mold body. The design makes the first positioning groove can position the installation position of the iron mold body, ensures that the iron mold body can be accurately aligned when installing, reduces the eccentric phenomenon, effectively improves the geometric precision of the casting; at the same time, the clamping cooperation of the first positioning groove and the iron mold body and the abutment design of the iron mold cover plate and the iron mold body make the end of the iron mold body be limited in the horizontal and longitudinal directions, and then the horizontal and longitudinal deformation of the iron mold body under the condition of thermal expansion and cold shrinkage can be inhibited, and the service life of the iron mold body is effectively prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the molding mold of the wind power casting of the utility model embodiment.

[0018] Figure 2 It is an explosion view of the molding mold of the wind power casting of the utility model embodiment.

[0019] Figure 3 It is a sectional view of the molding mold of the wind power casting of the utility model embodiment.

[0020] Figure 4 It is a partial explosion view of the molding mold of the wind power casting of the utility model embodiment.

[0021] In all the drawings, same reference signs represent same technical features, specifically: 100, upper mold sand box; 110, upper mold sand cavity; 120, third mounting hole; 200, lower mold sand box; 210, lower mold sand cavity; 211, cavity part; 220, first positioning groove; 230, second positioning groove; 240, first mounting hole; 300, iron mold body; 310, upper connecting end; 311, fourth mounting hole; 320, lower connecting end; 330, containing cavity; 400, iron mold cover plate; 410, through hole; 420, limiting structure; 430, second mounting hole; 500, sand core. DETAILED DESCRIPTION

[0022] The following is the specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] like Figures 1 to 4 As shown, a molding die for a wind turbine casting includes:

[0025] The lower mold sand box 200 has a lower mold sand cavity 210 and a first positioning groove 220 communicating with the lower mold sand cavity 210;

[0026] The mold assembly includes a separate mold body 300 and a mold cover plate 400. The mold body 300 is detachably snapped into a first positioning groove 220, and the mold cover plate 400 is detachably positioned above the lower mold sand box 200 and abuts against the side of the mold body 300 opposite to the first positioning groove 220. This design allows the first positioning groove 220 to position the mold body 300, ensuring accurate alignment during installation, reducing eccentricity, and effectively improving the geometric accuracy of the casting. Simultaneously, the snap-fit ​​engagement between the first positioning groove 220 and the mold body 300, and the abutment design between the mold cover plate 400 and the mold body 300, restrict the ends of the mold body 300 laterally and longitudinally, thereby suppressing lateral and longitudinal deformation of the mold body 300 under thermal expansion and contraction, effectively extending the service life of the mold body 300.

[0027] Specifically, such as Figures 1 to 4 As shown, in this embodiment, the molding die includes an upper mold sand box 100, an iron mold assembly, a lower mold sand box 200, and a sand core 500 located in the iron mold assembly, arranged sequentially from top to bottom. The two ends of the sand core 500 are respectively inserted into the upper mold sand box 100 and the lower mold sand box 200, and cooperate with the iron mold body 300, the upper mold sand box 100, and the lower mold sand box 200 to form the molding cavity of the product.

[0028] In this embodiment, the upper mold sand box 100 is in the shape of a boss, and it has an upper mold sand cavity 110 with a downward opening and communicating with the accommodating cavity 330 of the iron mold body 300. It is used to cooperate with the accommodating cavity 330, the lower mold sand cavity 210 and the sand core 500 to form the molding cavity of the product.

[0029] In the embodiment, the upper mold sand box 100 is arranged with a plurality of third mounting holes 120 in the circumferential direction, the third mounting holes 120 are in U shape, penetrate the edge of the upper mold sand box 100, and are detachably connected with the fourth mounting holes 311 through bolts (not shown in the figure). The design not only realizes the effective fixing between the upper mold sand box 100 and the iron mold body 300, but also improves the convenience of disassembling the upper mold sand box 100 and the iron mold body 300, thereby effectively improving the assembly efficiency of the mold.

[0030] To solve the problems of easy eccentricity and easy deformation of the iron mold assembly designed integrally in the prior art. In the embodiment, on the one hand, the first positioning groove 220 is arranged on the lower mold sand box 200, and on the other hand, the iron mold assembly includes the split design iron mold body 300 and the iron mold cover plate 400. The iron mold body 300 is detachably clamped into the first positioning groove 220 of the lower mold sand box 200, and the iron mold cover plate 400 is detachably arranged above the lower mold sand box 200 and abuts against the side of the iron mold body 300 away from the first positioning groove 220. The design makes the operator only need to gently put the iron mold body 300 into the first positioning groove 220 to realize quick installation without the need of complex alignment tools, which not only avoids the eccentricity problem of the iron mold body 300 during installation, but also improves the installation efficiency of the iron mold body 300. The design of the iron mold cover plate 400 ensures that the iron mold body 300 can be stably fixed on the lower mold sand box 200, and the iron mold cover plate 400 also forms longitudinal limiting for the end of the iron mold body 300, which can effectively inhibit the deformation of the end of the iron mold body 300 during thermal expansion and contraction, thereby reducing the replacement frequency of the iron mold body 300, prolonging the service life of the iron mold body 300, and effectively reducing the use and maintenance cost of the mold.

[0031] In the embodiment, the iron mold body 300 is in columnar shape, has a containing cavity 330 arranged along the length direction of the iron mold body 300 and penetrating the iron mold body 300, is used for containing the sand core 500, and one end of the containing cavity 330 is communicated with the upper mold sand cavity 110 and the other end is communicated with the lower mold sand cavity 210, so that the sand core 500, the containing cavity 330, the upper mold sand cavity 110 and the lower mold sand cavity 210 can cooperate to form a forming cavity of a product.

[0032] In the embodiment, the iron mold body 300 comprises an integrally formed upper connecting end 310 and a lower connecting end 320, wherein the upper connecting end 310 is provided with a plurality of fourth mounting holes 311 corresponding to the third mounting holes 120 one by one, the fourth mounting holes 311 are in the shape of U, penetrate the edge of the upper connecting end 310, and form detachable connection with the third mounting holes 120 through bolts. This design not only ensures the effective fixation between the upper mold sand box 100 and the iron mold body 300, but also improves the convenience of disassembly and assembly of the upper mold sand box 100 and the iron mold body 300, thereby effectively improving the assembly efficiency of the mold.

[0033] In the embodiment, the lower connecting end 320 is in the shape of a circular ring, is detachably clamped into the first positioning groove 220, and the outer wall of the lower connecting end 320 abuts against the inner wall of the first positioning groove 220. This design ensures the accuracy of each installation, avoids eccentricity, and further improves the quality of the castings; and the abutting mode can effectively inhibit the transverse expansion of the lower connecting end 320 due to heat, thereby avoiding the deformation of the lower connecting end 320 and improving the service life of the iron mold body 300.

[0034] In the embodiment, the iron mold cover plate 400 has a circular through hole 410 through which the iron mold body 300 passes, the diameter of the through hole 410 is smaller than the diameter of the lower connecting end 320, and the iron mold cover plate 400 abuts against the side of the lower connecting end 320 away from the first positioning groove 220. This design enables the lower connecting end 320 to be fixed in the first positioning groove 220, avoids displacement of the iron mold body 300 during the casting process, and also inhibits the longitudinal expansion of the lower connecting end 320 due to heat, thereby ensuring stable connection between the iron mold body 300 and the lower mold sand box 200 while avoiding deformation of the lower connecting end 320 and improving the service life of the iron mold body 300. In addition, the through hole 410 design also improves the convenience of installation of the iron mold cover plate 400.

[0035] In the embodiment, the side of the iron mold cover plate 400 facing the ground is also provided with a limiting structure 420 clamped into the second positioning groove 230, the limiting structure 420 is a protrusion in the direction close to the second positioning groove 230, and forms a concave-convex fit with the second positioning groove 230. This design not only improves the installation accuracy and efficiency of the iron mold cover plate 400, but also prevents the iron mold cover plate 400 from being displaced horizontally during the casting process, thereby ensuring the geometric accuracy of the castings.

[0036] In the embodiment, the iron mold cover plate 400 is arranged with a plurality of second mounting holes 430 corresponding to the first mounting holes 240 in the circumferential direction, the second mounting holes 430 are U-shaped, penetrate the edge of the iron mold cover plate 400, and are detachably connected with the first mounting holes 240 through bolts. This design not only realizes the effective fixing between the lower mold sand box 200 and the iron mold cover plate 400, but also improves the convenience of disassembling the lower mold sand box 200 and the iron mold cover plate 400, thereby effectively improving the assembly efficiency of the mold.

[0037] In the embodiment, the lower mold sand box 200 has a lower mold sand cavity 210 and a first positioning groove 220 communicating with the lower mold sand cavity 210. The first positioning groove 220 is above the lower mold sand cavity 210 and coaxially arranged with the lower mold sand cavity 210, and the first positioning groove 220 is annular with an inner diameter larger than that of the lower mold sand cavity 210. This design not only further ensures the concentricity of the iron mold body 300 and the forming cavity, avoids eccentricity, but also enables the first positioning groove 220 to support the iron mold body 300, reduces the pressure of the iron mold body 300 on the lower mold sand cavity 210, thereby ensuring the shape and size accuracy of the lower mold sand cavity 210 and improving the geometric accuracy of the casting.

[0038] In the embodiment, the lower mold sand box 200 is also provided with a second positioning groove 230, which is in the form of a rectangular groove, extends outward along the first positioning groove 220, and forms a concave-convex fit with the limiting structure 420. The cooperation between the second positioning groove 230 and the limiting structure 420 not only ensures the installation accuracy of the iron mold cover plate 400, but also enhances the stability of the iron mold cover plate 400, preventing the iron mold cover plate 400 from loosening or tilting during casting.

[0039] In the embodiment, the second positioning groove 230 and the limiting structure 420 are respectively provided with two groups, which are symmetrically arranged along the center line of the lower mold sand cavity 210. This symmetrical design realizes double positioning during installation of the iron mold cover plate 400, not only ensures the accurate symmetry of the iron mold cover plate 400 during installation, avoids eccentricity, further improves the geometric accuracy and mechanical properties of the casting, but also enhances the structural stability of the entire mold, ensuring the reliability and safety of the mold during casting.

[0040] In the embodiment, the lower mold sand cavity 210 has a cavity part 211 protruding outward along the first positioning groove 220 to form a lug structure of the casting, and the second positioning groove 230 is above the cavity part 211 and communicates with the cavity part 211. This design reduces the difficulty of forming the cavity part 211, so that the second positioning groove 230 can form a lug structure in cooperation with the cavity part 211 while positioning the iron mold cover plate 400, effectively improving the utilization rate of the second positioning groove 230.

[0041] In the embodiment, the lower mold sand box 200 is arranged with a plurality of first mounting holes 240 in the circumferential direction, the first mounting holes 240 are in U shape, penetrate the edge of the lower mold sand box 200, and form detachable connection with the second mounting holes 430 through bolts. The design not only ensures the effective fixing between the lower mold sand box 200 and the iron mold cover plate 400, but also improves the convenience of disassembly and assembly of the lower mold sand box 200 and the iron mold cover plate 400, thereby effectively improving the assembly efficiency of the mold.

[0042] It should be noted that the description of "first", "second", "one" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited. The terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A forming mold for a wind power casting, characterized in that, The utility model relates to a sand mold assembly for casting, comprising: a lower sand box having a lower sand cavity and a first positioning groove in communication with the lower sand cavity; an iron mold assembly including an iron mold body and an iron mold cover plate, the iron mold body being detachably clamped into the first positioning groove, and the iron mold cover plate being detachably arranged above the lower sand box and abutting against the side of the iron mold body away from the first positioning groove.

2. A forming mold for a wind power casting according to claim 1, characterized in that The first positioning groove is coaxially arranged above the lower sand cavity, and the inner diameter of the first positioning groove is greater than the inner diameter of the lower sand cavity.

3. A forming mold for a wind power casting according to claim 2, characterized in that The iron mold body includes a lower connecting end, which is detachably clamped into the first positioning groove, and the outer wall of the lower connecting end abuts against the inner wall of the first positioning groove.

4. A forming mold for a wind power casting according to claim 3, characterized in that The iron mold cover plate has a through hole for the iron mold body to pass through, the diameter of the through hole being smaller than the diameter of the lower connecting end, and the iron mold cover plate abutting against the side of the lower connecting end away from the first positioning groove.

5. The forming mold for a wind power casting according to claim 1, characterized in that The lower sand box further has a second positioning groove extending outward along the first positioning groove, and the iron mold cover plate has a limiting structure clamped into the second positioning groove.

6. A forming mold for a wind power casting according to claim 5, characterized in that The second positioning groove and the limiting structure are respectively provided with two groups of structures, which are symmetrically arranged along the center line of the lower sand cavity, and the second positioning groove and the limiting structure are in concave-convex cooperation.

7. A forming mold for a wind power casting according to claim 5, characterized in that The lower sand cavity has a cavity portion protruding outward along the first positioning groove, and the second positioning groove is above the cavity portion and in communication with the cavity portion.

8. The forming mold for a wind power casting according to claim 1, characterized in that The lower sand box is circumferentially provided with a plurality of first mounting holes, the iron mold cover plate is circumferentially provided with a plurality of second mounting holes corresponding to the first mounting holes one by one, and the first mounting holes and the second mounting holes are detachably connected through bolts.

9. The forming mold for a wind power casting according to claim 1, characterized in that The utility model further includes an upper sand box circumferentially provided with a plurality of third mounting holes, and the iron mold body further includes an upper connecting end provided with a plurality of fourth mounting holes corresponding to the third mounting holes one by one, and the third mounting holes and the fourth mounting holes are detachably connected through bolts.

10. A forming mold for a wind power casting according to claim 9, characterized in that The iron mold body has a receiving cavity arranged along the length direction of the iron mold body and penetrating through the iron mold body, the upper sand box has an upper sand cavity in communication with the receiving cavity, and the lower sand cavity is in communication with the receiving cavity.

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