CN216881618U - Balanced heavy psammitolite mould casting mould and balanced heavy casting mould for engineering machine tool - Google Patents
Balanced heavy psammitolite mould casting mould and balanced heavy casting mould for engineering machine tool Download PDFInfo
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- CN216881618U CN216881618U CN202220313236.0U CN202220313236U CN216881618U CN 216881618 U CN216881618 U CN 216881618U CN 202220313236 U CN202220313236 U CN 202220313236U CN 216881618 U CN216881618 U CN 216881618U
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Abstract
The utility model relates to the technical field of casting, in particular to a casting mold of a counter weight sand core mold for engineering machinery and the counter weight casting mold, which comprise two support plates, an upper mold for forming the counter weight sand core, a lower mold and a pouring mold for forming the pouring sand core, wherein the two support plates are respectively arranged at the left side and the right side of the lower mold, the left sides and the right sides of the upper mold and the lower mold are respectively provided with a groove correspondingly, the upper end of each support plate is clamped with the groove of the upper mold, the lower end of each support plate is clamped with the groove of the lower mold, the pouring mold comprises a main runner mold and a direct runner mold, the main runner mold comprises three L-shaped molds which are connected with each other, and the direct runner mold is connected with the main runner mold. The main runner mold is arranged at the position between the left arm and the right arm of the counterweight, and the main runner plays a role of a reinforcing rib, so that the problem of casting deformation is solved, and the yield is improved.
Description
Technical Field
The utility model relates to the technical field of casting, in particular to a casting mold of a counter weight sand core for engineering machinery and a counter weight casting mold.
Background
The counterweight is an important part for balancing the whole weight of the engineering machinery, is generally installed at the rear part of an excavator, a crane, a forklift and a loader, and is currently cast by a general V-method in China. The counterweight produced by the V-method process is high in equipment requirement, complex in manufacturing process, high in production cost, low in efficiency and high in rejection rate due to the fact that casting size precision is not high, and most of the mounting surface, mounting holes and the like of the counterweight need to be machined.
Therefore, there is a need for improvements in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the casting mold for the counter weight sand core of the engineering machinery and the casting mold for the counter weight sand core are simple in process and high in yield.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a casting die for a balanced weight sand core die for engineering machinery comprises supporting plates, an upper die and a lower die which are used for forming the balanced weight sand core and a pouring die which is used for forming the pouring sand core, wherein the upper die main body is of a concave structure, the lower die main body is of a convex structure, the two supporting plates are arranged, the two supporting plates are respectively arranged on the left side and the right side of the lower die, grooves are correspondingly arranged on the end surfaces, close to each other, of the left side and the right side of the upper die and the left side of the lower die, the upper ends of the supporting plates are clamped with the grooves of the upper die, and the lower ends of the supporting plates are clamped with the grooves of the lower die;
the pouring gate mold comprises a main runner mold and a direct runner mold, the main runner mold comprises three L-shaped molds which are connected with each other, the direct runner mold is connected with the main runner mold, and the L-shaped molds are connected with the upper section mold through secondary runner molds.
In order to guarantee the psammitolite intensity and transport, still include the cob, the cob is "ware" shape, be provided with the quad slit in the backup pad, the quad slit of establishing in the both sides backup pad is inserted respectively at the both ends of cob, and the cob erects in the psammitolite die cavity that upper die mould, lower die mould formed through the backup pad.
In order to pre-embed embedded parts with threaded holes in cast counterweight weights, a reserved screw rod structure is arranged in an upper mold and comprises a sliding block, a cylindrical block and a screw rod, the sliding block is arranged in the upper mold in a sliding mode along the vertical direction, a through hole matched with the cylindrical block is formed in the sliding block along the direction perpendicular to the sliding block, the cylindrical block is arranged in the through hole in a sliding mode, the threaded holes are formed in the middle of the cylindrical block, and the screw rod is in threaded connection with the cylindrical block.
Further, 1/3-1/2 of the length of the screw rod is overlapped with the cylindrical block.
For realizing better pouring effect, sprue mould left end is connected with balanced heavy left arm mould, sprue mould right-hand member is connected with balanced heavy right arm mould, the lower extreme and the balanced heavy mould middle part of sprue mould are connected.
The utility model provides an engineering machine tool is with balanced heavy casting mould, includes psammitolite, pre-buried screw rod, under casing, top cap and the fastener in the psammitolite, the psammitolite is provided with a plurality ofly in the under casing upper end, and a plurality of psammitolites stack layer upon layer along vertical direction, the top cap sets up the top at the upper psammitolite, is connected through fastener between under casing and the top cap.
Furthermore, the part of the screw rod which leaks out of the sand core is in threaded connection with an embedded block for forming a threaded hole.
In order to guarantee the pouring effect, need exert certain sum type moment, fastener includes steel pipe, threaded rod and lock nut, steel pipe lower extreme fixedly connected with fixture block, the welding of steel pipe upper end has adjusting nut, during threaded rod and adjusting nut threaded connection and one end stretched into the steel pipe, the steel pipe lower extreme passes through the fixture block and is connected with the bottom plate, lock nut and top cap connection are passed through to the threaded rod upper end.
Compared with the prior art, the utility model has the following beneficial effects:
1. the main runner mold is arranged between the left arm and the right arm of the balance weight, and the main runner plays a role of a reinforcing rib, so that the problem of casting deformation is solved, and the yield is improved.
2. According to the utility model, through the design of the reserved screw structure, the wire hole which is originally formed by machining is formed on the counterweight through direct machining on the embedded part, so that the manufacturing process is simplified, and the machining cost is reduced.
3. The sand cores are matched with each other, a plurality of castings can be obtained through one-time pouring, and the casting production efficiency is improved.
Drawings
The following will explain embodiments of the present invention in further detail through the accompanying drawings.
FIG. 1 is a schematic view of a sand core mold casting mold structure;
FIG. 2 is a schematic perspective view of a top mold;
FIG. 3 is a schematic top view of the upper mold;
FIG. 4 is an enlarged view of a portion of FIG. 2;
FIG. 5 is a schematic view of a lower mold;
fig. 6 is a schematic view of the working state of the sand core mold.
In the figure: 1-supporting plate, 11-square hole, 2-upper die, 21-groove, 3-lower die, 4-pouring die, 41-main runner die, 42-direct runner die, 43-L die, 44-secondary runner die, 5-core bar, 6-reserved screw structure, 61-sliding block, 62-cylindrical block, 63-screw, 7-sand core, 8-bottom box, 81-top cover, 9-fastening device, 91-steel pipe, 92-threaded rod, 93-locking nut, 94-clamping block and 95-adjusting nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 5, a casting mold for a counter weight sand core mold for an engineering machine comprises a support plate 1, an upper mold 2 for forming a counter weight sand core, a lower mold 3 and a pouring mold 4 for forming a pouring sand core, wherein the main body of the upper mold 2 is of a concave structure, the main body of the lower mold 3 is of a convex structure, the support plate is arranged between the upper mold and the lower mold, the two support plates 1 are arranged, the two support plates 1 are respectively arranged at the left side and the right side of the mold, the end surfaces, close to each other, of the left side and the right side of the upper mold 2 and the left side of the lower mold 3 are correspondingly provided with grooves 21, and the upper end and the lower end of each support plate 1 are respectively clamped with the grooves of the upper mold 2 and the lower mold 3; the sand core die cavity is formed by the upper die, the lower die and the supporting plate.
The pouring gate mold 4 comprises a main flow passage mold 41 and a direct flow passage mold 42, the main flow passage mold 41 comprises three L-shaped molds 43 which are connected with each other, the direct flow passage mold 42 is connected with the main flow passage mold 41, the L-shaped molds 43 are connected with the upper mold 2 through secondary flow passage molds 44, the left end of the main flow passage mold 41 is connected with a counterweight left arm mold, the right end of the main flow passage mold is connected with a counterweight right arm mold, and the lower end of the main flow passage mold is connected with the middle of the counterweight mold.
In order to improve the structural strength of the sand core and facilitate placement, a core rod 5 is arranged in the sand core die cavity, the core rod 5 is in a dish shape, square holes 11 are formed in the supporting plates 1 on the two sides, the two ends of the core rod 5 are respectively inserted into the square holes 11 of the supporting plates 1 on the two sides, and the core rod 5 is erected in the sand core die cavity formed by the upper die 2 and the lower die 3 through the supporting plates 1.
In order to directly form a threaded hole on a counterweight body and avoid subsequent machining procedures, a reserved screw structure 6 is arranged in a sand core die casting die, the reserved screw structure 6 comprises a slide block 61, a cylindrical block 62 and a screw 63, the slide block 61 is arranged in the vertical direction at the position of each screw hole to be machined on an upper die and/or a lower die, a through hole matched with the cylindrical block 62 is arranged in the slide block 61 in the direction vertical to the slide block 61, the cylindrical block 62 is arranged in the through hole in a sliding manner, a threaded hole is arranged in the middle of the cylindrical block 62, the screw 63 is in threaded connection with the cylindrical block 62, 1/3-1/2 of the length of the screw 63 is screwed into the cylindrical block 62, the rest part is leaked outside the cylinder, molding sand is filled into a gap formed by the upper and lower dies and two side supporting plates during molding, and the exposed part of the screw 63 is buried in a sand core, after stripping, the sliding block is left on the sand core, the sliding block 61 is taken out along the vertical direction of the screw 63, the cylinder is unscrewed, a steel embedded part with a threaded hole which is manufactured in advance is screwed on the screw 63, the embedded part with the threaded hole is surrounded by molten iron during casting, and the screw 63 is screwed off after casting is completed, namely, the threaded hole for installation and assembly is formed in the counterweight.
Example 2:
as shown in fig. 6, a counterweight casting mold for construction machinery comprises a sand core 7 manufactured by using the sand core casting mold of embodiment 1, a screw 63 embedded in the sand core 7, a bottom box 8, a top cover 81 and a fastening device 9, wherein a part of the screw 63 leaking out of the sand core 7 is connected with an embedded block for forming a threaded hole through a thread, the sand core 7 is provided with a plurality of sand cores 7 on the top end of the bottom box 8, the sand cores 7 are stacked layer by layer along the vertical direction, the top cover 81 is arranged at the top end of the sand core 7 on the upper layer, and the bottom box 8 is connected with the top cover 81 through the fastening device 9.
The fastening device 9 comprises a steel pipe 91, a threaded rod 92 and a locking nut 93, a clamping block 94 is fixedly connected to the lower end of the steel pipe 91, an adjusting nut 95 is welded to the upper end of the steel pipe 91, the threaded rod 92 is in threaded connection with the adjusting nut 95, one end of the threaded rod 92 extends into the steel pipe 91, the lower end of the steel pipe 91 is connected with the bottom plate through the clamping block 94, the upper end of the threaded rod 92 is connected with the top cover 81 through the locking nut 93, and the sand core is fastened through the fastening device 9, so that casting can be conducted.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (8)
1. The utility model provides an engineering machine tool is with balanced heavy psammitolite mould casting mould which characterized in that: the counterweight sand core pouring device comprises supporting plates (1), an upper die (2) used for forming a counterweight sand core, a lower die (3) and a pouring die (4) used for forming a pouring sand core, wherein the main body of the upper die (2) is of a concave structure, the main body of the lower die (3) is of a convex structure, the two supporting plates (1) are respectively arranged at the left side and the right side of the lower die (3), grooves (21) are correspondingly arranged on the end surfaces, close to each other, of the left side and the right side of the upper die (2) and the left side and the right side of the lower die (3), the upper ends of the supporting plates (1) are clamped with the grooves (21) of the upper die (2), and the lower ends of the supporting plates (1) are clamped with the grooves of the lower die (3);
the pouring gate mold (4) comprises a main flow passage mold (41) and a direct flow passage mold (42), the main flow passage mold (41) comprises three L-shaped molds (43) which are connected with each other, the direct flow passage mold (42) is connected with the main flow passage mold (41), and the L-shaped molds (43) are connected with the upper section mold (2) through secondary flow passage molds (44).
2. The casting mold of the sand core mold for the counterweight of the engineering machinery, according to claim 1, is characterized in that: the sand core mould is characterized by further comprising a core rod (5), wherein the core rod (5) is in a dish shape, square holes (11) are formed in the supporting plate (1), two ends of the core rod (5) are respectively inserted into the square holes (11) of the supporting plates (1) on two sides, and the core rod (5) is erected in a sand core cavity formed by the upper mould (2) and the lower mould (3) through the supporting plate (1).
3. The casting mold of the sand core mold for the counterweight of the engineering machinery, according to claim 1, is characterized in that: the upper die (2) is internally provided with a reserved screw rod structure (6), the reserved screw rod structure (6) comprises a sliding block (61), a cylindrical block (62) and a screw rod (63), the sliding block (61) is arranged in the upper die (2) in a sliding mode along the vertical direction, a through hole matched with the cylindrical block (62) is formed in the sliding block (61) in a direction perpendicular to the sliding block (61), the cylindrical block (62) is arranged in the through hole in a sliding mode, a threaded hole is formed in the middle of the cylindrical block (62), and the screw rod (63) is in threaded connection with the cylindrical block (62).
4. The casting mold of the sand core mold for the counterweight of the engineering machinery, according to claim 3, is characterized in that: 1/3-1/2 of the length of the screw (63) is overlapped with the cylindrical block (62).
5. The casting mold of the sand core mold for the counterweight of the engineering machinery, according to claim 4, is characterized in that: the left end of the main flow channel mold (41) is connected with the balance weight left arm mold, the right end of the main flow channel mold (41) is connected with the balance weight right arm mold, and the lower end of the main flow channel mold (41) is connected with the middle of the balance weight mold.
6. A counterweight casting mold for construction machinery, comprising a sand core (7) manufactured by using the sand core casting mold of any one of claims 1 or 5 and a screw (63) embedded in the sand core (7), characterized in that: including under casing (8), top cap (81) and fastener (9), psammitolite (7) are provided with a plurality ofly in under casing (8) upper end, and a plurality of psammitolites (7) stack layer upon layer along vertical direction, top cap (81) set up the top at upper psammitolite (7), are connected through fastener (9) between under casing (8) and top cap (81).
7. A counterweight casting mold for construction machinery according to claim 6, wherein: the part of the screw (63) which leaks out of the sand core (7) is connected with an embedded block for forming a threaded hole through threads.
8. A counterweight casting mold for construction machinery according to claim 6, wherein: fastener (9) include steel pipe (91), threaded rod (92) and lock nut (93), steel pipe (91) lower extreme fixedly connected with fixture block (94), steel pipe (91) upper end welding has adjusting nut (95), during threaded rod (92) and adjusting nut (95) threaded connection and one end stretched into steel pipe (91), steel pipe (91) lower extreme passes through fixture block (94) and is connected with the bottom plate, threaded rod (92) upper end is passed through lock nut (93) and is connected with top cap (81).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202220313236.0U CN216881618U (en) | 2022-02-16 | 2022-02-16 | Balanced heavy psammitolite mould casting mould and balanced heavy casting mould for engineering machine tool |
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CN202220313236.0U CN216881618U (en) | 2022-02-16 | 2022-02-16 | Balanced heavy psammitolite mould casting mould and balanced heavy casting mould for engineering machine tool |
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CN216881618U true CN216881618U (en) | 2022-07-05 |
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CN202220313236.0U Active CN216881618U (en) | 2022-02-16 | 2022-02-16 | Balanced heavy psammitolite mould casting mould and balanced heavy casting mould for engineering machine tool |
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