CN221312410U - Three-box modeling mold for casting wind power generation transmission gear box body part - Google Patents

Abstract

The utility model relates to the technical field of dies, in particular to a three-box modeling die for casting a wind power generation transmission gear box body part, which comprises a shaping plate, a lower die fixed at the top end of the shaping plate and a profiling movable block upper die detachably mounted at the top end of the lower die, wherein the lower die and the profiling movable block upper die are spliced to form a complete transmission gear box body part, the part is of a structure with large two ends and small middle, the connecting surface of the lower die and the profiling movable block upper die is the surface with the smallest size of the part from bottom to top, the bottom end of the profiling movable block upper die is provided with a plurality of positioning columns, and the top end of the lower die is provided with a plurality of positioning holes corresponding to the positioning columns one by one, so that the number of sand dies is reduced, the precision of the sand dies is improved, and meanwhile, the using amount of the sand dies is reduced.

Description

Three-box modeling mold for casting wind power generation transmission gear box body part

Technical Field

The utility model relates to the technical field of molds, in particular to a three-box molding mold for casting a wind power generation transmission gear box body part.

Background

The general shape of wind power generation transmission gear box body part is irregular, according to normal parting mode, can produce many sand mould, and the sand mould has more to the size of foundry goods to influence foundry goods processing, and the sand mould increases the sand-iron ratio that still can increase the foundry goods, causes the wasting of resources.

In the prior art, when a sand mold is manufactured by using a box-type component, in order to facilitate demolding, the molding is generally performed by using a two-box mold, referring to fig. 6-7, the molding mold comprises a core box 12, a template 1, a core head 10 arranged at the top end of the template 1 and a part of casting 11, molding sand is used for covering the whole core head 10 and the part of casting 11 during molding, a first sand mold 13 is manufactured after demolding, the inside of the core box 12 is filled with molding sand, a second sand mold 14 is manufactured after demolding, then the first sand mold 13 and the second sand mold 14 are combined to form a complete sand mold, a cavity with the same shape as the wind power generation transmission gearbox body component is formed in the sand mold, in actual production operation, the sand mold has multiple influences on the casting size, the mold closing time is relatively high, the production is difficult, and meanwhile, due to the fact that the core head 10 is relatively large, the sand usage amount is increased, and the sand-iron ratio of the casting is increased.

Disclosure of Invention

The utility model aims to provide a three-box modeling die for casting a wind power generation transmission gear box body part, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a three-box molding die for casting of wind power generation transmission gear box body part, includes the template, fixes the lower mould on template top and the profile modeling loose piece last mould of demountable installation on the lower mould top, lower mould and profile modeling loose piece go up the mould concatenation and form complete transmission gear box body part, just the part is the structure of big centre in both ends, the connecting surface of lower mould and profile modeling loose piece last mould is the minimum face of part from down to the supreme size, the bottom of profile modeling loose piece last mould is provided with a plurality of reference columns, the top of lower mould is provided with a plurality of locating holes with the reference column one-to-one.

Further, the bottom of the profiling movable block upper die is provided with a plurality of mounting grooves corresponding to the positioning columns one by one, and the positioning columns are in threaded connection with the mounting grooves.

Further, the bottom end of the positioning column is a conical structure with gradually reduced radius from top to bottom.

Further, the centre of locating hole inside is all vertical to be provided with the thimble, the reference column is hollow structure, and runs through in the centre of reference column to be provided with and hold the thimble and extend to the inside first through-hole of reference column, the inside of reference column is provided with carries out the fixed limit module of centre gripping to the thimble.

Further, the limit module comprises an inner sleeve movably arranged in the positioning column, a plurality of steel balls arranged in the inner sleeve and a spring arranged at the top end of the steel balls, the inner sleeve is made of metal, a plurality of openings corresponding to the steel balls one by one are formed in the side wall of the inner sleeve in a penetrating mode, the steel balls penetrate through the openings and are abutted to the inner side wall of the positioning column, the steel balls can roll up and down along the inner side wall of the positioning column, and a second through hole for accommodating the thimble to insert into is formed in the bottom end of the inner sleeve in a penetrating mode.

Further, the top end of the positioning column is provided with an opening in a penetrating mode, the bottom end of the spring is abutted against a plurality of steel balls, the top end of the spring extends to the inside of the mounting groove and is abutted against the top end of the mounting groove to push the steel balls to move downwards, and therefore the distance between the steel balls is reduced, and the ejector pin is clamped and fixed in the middle.

Compared with the prior art, the utility model has the beneficial effects that: this three case molding mould is used in casting of wind power generation transmission gear box casing part

When the sand mould is manufactured by arranging the shaping plate, the lower mould and the upper mould of the profiling movable block, the whole mould is directly covered by the practical molding sand, and then the upper mould of the profiling movable block is taken, so that the complete sand mould can be demolded and manufactured, a plurality of sand moulds are not required to be manufactured for assembly, the casting precision is improved, a core head is not required to be used during molding, the required sand box is small in size, the using amount of the molding sand is reduced, and the sand-iron ratio of the casting is reduced;

By arranging the positioning holes and the positioning columns, when the upper die and the lower die of the profiling movable block are assembled, the displacement of the upper die and the lower die during modeling is avoided, the precision of the sand die is reduced, meanwhile, the connecting surface is arranged on the opposite side of the upper die of the lower die and the upper die of the profiling movable block, the external shapes of the upper die and the upper die of the profiling movable block are not influenced, and the workload of later modification is reduced;

Through setting up spacing module and thimble, can fix both after lower mould and profile modeling loose piece go up the mould concatenation, avoid filling the lower mould of molding sand and profile modeling loose piece to go up the mould and take place the displacement from top to bottom, further improve sand mould shaping quality.

Drawings

FIG. 1 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a schematic diagram of an explosion structure of the limit module according to the present utility model;

FIG. 5 is a schematic diagram of a cross-sectional structure of a sand mold according to the present utility model;

FIG. 6 is a schematic diagram of a three-dimensional structure of a two-box molding die in the prior art;

FIG. 7 is a schematic diagram of a cross-sectional structure of a two-box molding sand mold in the prior art.

In the figure: 1. a template; 2. a lower die; 201. positioning holes; 3. profiling loose piece upper die; 301. a mounting groove; 4. positioning columns; 401. a first through hole; 402. a connection part; 5. a limit module; 501. an inner sleeve; 5011. an opening; 5012. a second through hole; 502. steel balls; 503. a spring; 6. a thimble; 7. a bottom box; 8. a middle box; 9. a cover box; 10. a core print; 11. part of the casting; 12. a core box; 13. a first sand mold; 14. and a second sand mould.

Detailed Description

In the following description of the embodiments of the present utility model, it should be noted that, the descriptions of the terms "first", "second", etc. are only for descriptive purposes, and are not intended to specifically identify the order or order of the aspects of the present utility model, but are merely for distinguishing components or operations described in the same technical terms, and are not to be construed as indicating or implying a relative importance or implying any particular order of the features of the embodiments of the present utility model, so that the features defining "first", "second", etc. may explicitly or implicitly include at least one such feature. For the purpose of the present description and claims, and any variations thereof, the term "comprising" and any variations thereof as used in the above-described drawings is intended to cover a non-exclusive inclusion.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected or detachably connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, in the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided: a three-box modeling mold for casting a wind power generation transmission gear box body part comprises a shaping plate 1, a lower mold 2 fixed at the top end of the shaping plate 1 and a profiling movable block upper mold 3 detachably mounted at the top end of the lower mold 2, wherein the lower mold 2 and the profiling movable block upper mold 3 are spliced to form a complete transmission gear box body part, the parts are of structures with large two ends and small middle, the connecting surface of the lower mold 2 and the profiling movable block upper mold 3 is a surface with the smallest size from bottom to top, during modeling, a middle box 8 is used for filling molding sand, the whole lower mold 2 and the profiling movable block upper mold 2 are covered, during demolding, the profiling movable block upper mold 3 is taken down, the whole middle box 8 is lifted up to realize demolding, a casting cavity with the same shape as a casting is formed in the middle of the sand mold, a plurality of positioning columns 4 are arranged at the bottom end of the profiling movable block upper mold 3, a plurality of positioning holes 201 which correspond to the positioning columns 4 one by one are arranged at the top end of the lower mold 2, in this embodiment, and other numbers and positions can also be arranged according to the needs or the specific shape of the wind power generation transmission gear box body part;

In the embodiment, the bottom end of the profiling movable block upper die 3 is provided with a plurality of mounting grooves 301 corresponding to the positioning columns 4 one by one, the positioning columns 4 are in threaded connection with the mounting grooves 301, specifically, the top end of each positioning column 4 is provided with a vertical connecting part 402, and the outer side wall of each connecting part 402 is provided with external threads, so that the positioning columns 4 are convenient to assemble and disassemble;

The bottom end of the positioning column 4 is of a conical structure with gradually reduced radius from top to bottom, so that the positioning column is convenient to insert, the inner diameter of the positioning hole 201 is equal to the largest outer diameter of the positioning column 4, the positioning column 4 can play a role in positioning after being inserted into the positioning hole 201, and the influence of the movement of the profiling movable upper die 3 on sand die modeling in the modeling process is avoided;

The middle of the inside of the positioning hole 201 is vertically provided with a thimble 6, the top end of the thimble 6 is of a round table structure with a small top and a large bottom, the positioning column 4 is of a hollow structure, a first through hole 401 for accommodating the thimble 6 to extend into the positioning column 4 is arranged in the middle of the positioning column 4 in a penetrating manner, and a limiting module 5 for clamping and fixing the thimble 6 is arranged in the positioning column 4;

Referring to fig. 3-4, the limit module 5 includes an inner sleeve 501 movably disposed in the positioning column 4, a plurality of steel balls 502 disposed in the inner sleeve 501, and a spring 503 disposed at the top end of the steel balls 502, wherein the inner sleeve 501 is made of metal, a plurality of openings 5011 corresponding to the steel balls 502 one by one are disposed on the side wall of the inner sleeve 501 in a penetrating manner, the steel balls 502 all pass through the openings 5011 and abut against the inner side wall of the positioning column 4, and can roll up and down along the inner side wall of the positioning column 4, the inner sleeve 501 is a hollow round table structure with a large upper side and a small lower side, the openings 5011 are rectangular through holes, the lengths of two sides of the openings are smaller than the diameters of the steel balls 502, so that the steel balls 502 can move back and forth along the radial direction of the bottom end of the inner sleeve 501, but cannot break away from the inner sleeve 501, the bottom end of the inner sleeve 501 is provided with a second through hole 5012 for accommodating the insertion of the ejector pin 6, in this embodiment, the top end of the positioning column 4 is provided with an opening in a penetrating manner, the bottom end of the spring 503 is abutted with a plurality of steel balls 502, the top end of the spring 503 extends to the inside of the mounting groove 301 and is abutted with the top end of the mounting groove 301, the spring is used for pushing the steel balls 502 to move downwards, so that the space between the steel balls 502 is reduced, the thimble 6 is clamped and fixed in the middle, three steel balls 502 are arranged, under the normal state, the three steel balls 502 are abutted with the bottom end of the inner sleeve 501 under the elastic supporting property of the spring 503, at the moment, the three steel balls 502 are abutted with each other, the space is smaller, when the profiling loose-piece upper die 3 is fixed at the top end of the lower die 2, the positioning column 4 is inserted downwards into the inside of the positioning hole 201, meanwhile, the thimble 6 in the positioning hole 201 sequentially penetrates through the first through hole 401 and the second through hole 5012 to enter the inside of the positioning column 4 and the inner sleeve 501, the thimble 6 pushes each steel ball 502 to slide upwards along the inner side wall of the positioning column 4, and then the space between the steel balls 502 is increased, under the elastic support of the spring 503, the steel balls 502 clamp and fix the thimble 6 in the middle, when the profiling movable block upper die 3 is pulled upwards, the abutting surface of the steel balls 502 and the thimble 6 receives a downward friction force, the steel balls 502 move downwards along the inner side wall of the positioning column 4, as the positioning column 4 is of a conical structure with a big upper part and a small lower part, the distance between the steel balls 502 is reduced, the thimble 6 is tightly clamped in the middle, the displacement of the lower die 2 and the profiling movable block upper die 3 in the modeling process is avoided, a magnet is used for placing the top end of the profiling movable block upper die 3 in the demolding, and under the action of magnetic force, the inner sleeve 501 and the steel balls 502 move upwards, so that the distance between the steel balls 502 is increased, and the thimble 6 is conveniently separated.

Working principle: referring to fig. 5, when in use, the lower die 2 is fixed at the top end of the shaping plate 1, the lower die 2 and the profiling movable block upper die 3 are spliced to form a complete shape of a required component, the bottom box 7 is sleeved at the top end of the shaping plate 1, sand is filled down, the middle box 8 is sleeved at the top end of the bottom box 7, sand is filled down, at the moment, the top end of the middle box 8 is flush with the top end of the profiling movable block upper die 3, the cover box 9 is placed at the top end of the middle box 8, sand is filled down, after the sand is hardened, the cover box 9 and the profiling movable block upper die 3 are taken out, demoulding can be carried out, and the bottom box 7, the middle box 8 and the cover box 9 are combined together to form a complete sand die in the later stage, and casting is carried out through a casting system (not shown in the figure) when in use.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A three-box modeling mold for casting a wind power generation transmission gear box body part is characterized in that: including template (1), lower mould (2) and the removable profile modeling loose piece upper die (3) of installing on lower mould (2) top of fixing on template (1) top, lower mould (2) and profile modeling loose piece upper die (3) splice and form complete drive gear box casing part, just the part is the structure of big centre in both ends, the face that the minimum of upper die (3) is gone up to lower supreme size for the part to the junction surface of lower mould (2) and profile modeling loose piece, the bottom of mould (3) is provided with a plurality of reference columns (4) on the profile modeling loose piece, the top of lower mould (2) is provided with a plurality of locating holes (201) with reference column (4) one-to-one.

2. A three-box molding die for casting a wind power generation transmission gear box body part according to claim 1, wherein: the bottom of the profiling movable block upper die (3) is provided with a plurality of mounting grooves (301) corresponding to the positioning columns (4) one by one, and the positioning columns (4) are in threaded connection with the mounting grooves (301).

3. A three-box molding die for casting a wind power generation transmission gear box body part according to claim 1, wherein: the bottom end of the positioning column (4) is of a conical structure with gradually reduced radius from top to bottom.

4. A three-box molding die for casting a wind power generation transmission gear box body part according to claim 3, wherein: the utility model discloses a thimble structure, including locating hole (201), reference column (4), thimble (4), locating column (4), thimble (4) are provided with all vertically in the middle of locating hole (201) inside thimble (6), and the centre of reference column (4) runs through and is provided with and holds thimble (6) and extend to first through-hole (401) inside reference column (4), the inside of reference column (4) is provided with carries out centre gripping fixed limit module (5) to thimble (6).

5. A three-box molding die for casting a wind power generation transmission gear box body part according to claim 4, wherein: the limiting module (5) comprises an inner sleeve (501) movably arranged in the positioning column (4), a plurality of steel balls (502) arranged in the inner sleeve (501) and a spring (503) arranged at the top end of the steel balls (502), wherein the inner sleeve (501) is made of metal, a plurality of openings (5011) corresponding to the steel balls (502) one by one are formed in the side wall of the inner sleeve (501) in a penetrating mode, the steel balls (502) penetrate through the openings (5011) and are abutted to the inner side wall of the positioning column (4), the steel balls can roll up and down along the inner side wall of the positioning column (4), and a second through hole (5012) for accommodating the ejector pins (6) to be inserted into the inner portion is formed in the bottom end of the inner sleeve (501).

6. A three-box molding die for casting a wind power generation transmission gear box body part according to claim 5, wherein: the top of reference column (4) runs through and is provided with the opening, the bottom of spring (503) and a plurality of steel ball (502) butt, the top of spring (503) extends to the inside of mounting groove (301) to with the top butt of mounting groove (301), be used for promoting steel ball (502) to move down, thereby reduce the interval of each steel ball (502), fix thimble (6) centre gripping in the centre.