CN220862659U - Balance shaft shell lost foam mould - Google Patents

Abstract

The utility model discloses a balance shaft shell lost foam mold, and relates to the technical field of casting molds. The sand box comprises a sand box body, a sand ultrasonic compaction assembly, a lifting mechanism and a positioning assembly; the sand ultrasonic compaction assembly is fixed on the lifting mechanism and driven to lift by the lifting mechanism; a balance shaft shell model is placed in the sand box body, a central round hole of the balance shaft shell model is vertically arranged, and a positioning assembly is positioned in the central round hole and used for stably positioning the balance shaft shell model in the sand box body; the positioning component comprises an inner box body, an inner box cover, a tightening unit and an adjusting unit. According to the utility model, by arranging the sand ultrasonic compaction assembly and the lifting mechanism, ultrasonic compaction treatment can be carried out on each position in the sand box body, so that the fluidity and filling performance of sand are effectively improved, and the problem that the quality and precision of castings are not ideal due to insufficient uniformity of filling sand in the existing lost foam mould is solved.

Description

Balance shaft shell lost foam mould

Technical Field

The utility model belongs to the technical field of casting molds, and particularly relates to a balance shaft shell lost foam mold.

Background

The lost foam casting is a novel casting method for producing castings by using foamed plastic polymer materials to manufacture a full mold with the same structure and size as the parts to be cast, dip-coating fireproof paint (with the functions of strengthening, smoothing and ventilation) and drying, then burying the full mold in dry quartz sand, carrying out three-dimensional vibration molding, pouring molten metal into a casting mold sand box under a negative pressure state, heating, gasifying and extracting the polymer material model, and then replacing the liquid metal with a one-step molding casting novel process formed after cooling and solidification.

The balance shaft housing is an important component in an automobile or other mechanical equipment, and works together with the balance shaft to play a role in balance and stability. The balance shaft housing is typically mounted on a balance shaft bracket by bearings, and is rotatable about the balance shaft bracket. This construction allows the balance shaft housing to flexibly respond to movement of the tire, particularly when operated to a large extent, without adversely affecting other tires. For the casting with complex structure of the balance shaft shell, the lost foam casting process can ensure the dimensional accuracy and the surface quality of the casting, and simultaneously reduce the production cost.

However, the existing lost foam mould still has the following disadvantages in actual use:

1. When the existing lost foam mould is filled with sand in a layering manner, the sand is difficult to uniformly distribute into the box body, so that the quality and the precision of subsequent castings are not ideal;

2. The existing lost foam mould is difficult to stably position a part model in a box body, so that the lost foam mould is easy to move or deform during subsequent casting, and the quality and the precision of castings are affected.

Therefore, we provide a balance shaft shell lost foam mold to solve the above problems.

Disclosure of utility model

The utility model aims to provide a balance shaft shell lost foam mould, which can carry out ultrasonic compaction treatment on each position in a sand box body by arranging a sand material ultrasonic compaction assembly and a lifting mechanism, effectively improve the fluidity and filling performance of sand materials and solve the problem that the quality and the precision of castings are not ideal due to insufficient uniform filling of the sand materials in the existing lost foam mould.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a balance shaft shell lost foam mould which comprises a sand box body, a sand ultrasonic compaction assembly, a lifting mechanism and a positioning assembly, wherein the sand box body is arranged on the sand box body; the sand ultrasonic compaction assembly is arranged outside the sand box body in a surrounding mode, and is fixed on the lifting mechanism and driven to lift by the lifting mechanism; the sand box is characterized in that a balance shaft shell model is placed in the sand box body, a central round hole of the balance shaft shell model is vertically arranged, and a positioning assembly is positioned in the central round hole and used for stably positioning the balance shaft shell model in the sand box body.

The positioning assembly comprises an inner box body, an inner box cover, a tightening unit and an adjusting unit; the inner box body is fixed on the inner top surface of the sand box body, the inner box cover is used for sealing the inner box body, four tightening units are arranged and uniformly distributed around the inner box body along the circumference, the inner box body is movably inserted into the inner box body, and the adjusting unit is positioned in the inner box body and drives the four tightening units to move simultaneously in a mechanical transmission mode.

The utility model is further characterized in that the top of the sand box body is provided with a sand box cover plate, a second annular support plate is fixed at the edge of the sand box cover plate, and four positioning rods uniformly distributed along the circumference are fixed at the bottom of the second annular support plate; the sand box is characterized in that a first annular support plate is fixed at the edge of the top end of the sand box body, and four positioning holes which are uniformly distributed along the circumference are formed in the first annular support plate and matched with the positioning rods.

The utility model is further arranged that the sand ultrasonic compaction assembly comprises an ultrasonic generator, a gear ring supporting frame, a gear and a first motor; the ultrasonic generator is fixed at the top of the gear ring, the gear ring is rotatably arranged at the top of the gear ring supporting frame, the gear ring is meshed with the gear, and the gear is fixedly sleeved on an output shaft of the first motor.

The utility model is further arranged that the lifting mechanism comprises a lifting plate, a first nut seat, a first screw rod, a top seat, a reduction gearbox, a second motor and a first guide rod; one end of the lifting plate is sleeved outside the sand box body, the top of the lifting plate is fixedly provided with the gear ring supporting frame, the other end of the lifting plate is fixedly connected with the first nut seat, and the bottom of the lifting plate is fixedly provided with the first motor; the first nut seat is movably sleeved on the first screw rod, the top end of the first screw rod is rotationally connected with the top seat, the bottom end of the first screw rod is fixedly connected with the output shaft of the reduction gearbox, and the input shaft of the reduction gearbox is fixedly connected with the output shaft of the second motor; the first guide rod is fixed between the footstock and the reduction gearbox, and the first guide rod movably penetrates through the lifting plate.

The utility model is further arranged that the tightening unit comprises a tightening plate, a U-shaped frame, a second nut seat, a second screw rod, a supporting seat, a first bevel gear and a second guide rod; the U-shaped frame is fixed on the inner side surface of the tightening plate and fixedly connected with the second nut seat, the second nut seat is movably sleeved on the second screw rod, the second screw rod is supported by the supporting seat, and the first bevel gear is fixedly sleeved at the end part of the second screw rod; the side surface of the supporting seat is fixedly provided with a second guide rod which movably penetrates through the U-shaped frame.

The utility model is further arranged that the outer side surface of the tightening plate is an arc surface and is abutted against the inner wall of the central round hole of the balance shaft shell model.

The utility model is further arranged that the adjusting unit comprises a second bevel gear, a rotating shaft, a bearing seat and a rotating frame; the second bevel gear is meshed with the first bevel gear, the second bevel gear is fixedly sleeved at the bottom end of the rotating shaft, the rotating shaft is supported by the bearing seat, and the rotating frame is fixed at the top end of the rotating shaft.

The utility model has the following beneficial effects:

1. according to the utility model, the ultrasonic compaction assembly and the lifting mechanism for the sand are arranged, so that the ultrasonic generator can rotate along the periphery of the sand box body and can be lifted and adjusted, thus ultrasonic compaction treatment can be carried out on each position in the sand box body, the fluidity and filling performance of the sand are effectively improved, the sand is more uniformly filled into a die, gaps and bubbles in the sand are reduced, the quality and the precision of castings are improved, and casting defects are reduced.

2. The utility model can stably and accurately position the balance shaft shell model in the sand box body by arranging the positioning component, prevent the balance shaft shell model from moving or deforming in the casting process, lay a good foundation for the subsequent casting process, and ensure that the balance shaft shell model can be suitable for the use of the balance shaft shell models with different specifications due to the adjustability of the positioning component.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of the overall structure of a lost foam mold with a balance shaft housing.

Fig. 2 is a schematic structural diagram of a sand ultrasonic compaction assembly of a balance shaft shell lost foam mold.

Fig. 3 is a schematic structural diagram of a lifting mechanism of a lost foam mold with a balance shaft housing.

Fig. 4 is a schematic structural diagram of a positioning assembly of a lost foam mold with a balance shaft housing.

Fig. 5 is a schematic diagram of a connection structure between a tightening unit and an adjusting unit of a lost foam mold with a balance shaft housing.

In the drawings, the list of components represented by the various numbers is as follows:

1-sand box body, 101-first annular supporting plate, 102-positioning hole, 2-sand box cover plate, 201-second annular supporting plate, 202-positioning rod, 3-sand ultrasonic compaction assembly, 301-ultrasonic generator, 302-gear ring, 303-gear ring supporting frame, 304-gear, 305-first motor, 4-lifting mechanism, 401-lifting plate, 402-first nut seat, 403-first screw rod, 404-top seat, 405-reduction box, 406-second motor, 407-first guide rod, 5-positioning assembly, 501-inner box body, 502-inner box cover, 503-tightening unit, 503 a-tightening plate, 503 b-U-shaped frame, 503 c-second nut seat, 503 d-second screw rod, 503 e-supporting seat, 503 f-first bevel gear, 503 g-second guide rod, 504-adjusting unit, 504 a-second bevel gear, 504 b-rotating shaft, 504 c-bearing seat, 504 d-rotating frame and 6-balance shaft shell model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Detailed description of the preferred embodiments

Referring to fig. 1-2, the utility model discloses a balance shaft shell lost foam mould, which comprises a sand box body 1 and a sand ultrasonic compaction assembly 3; the sand ultrasonic compaction assembly 3 surrounds the sand box body 1.

Specifically, the sand ultrasonic compaction assembly 3 includes an ultrasonic generator 301, a gear ring 302, a gear ring support 303, a gear 304, and a first motor 305; the ultrasonic generator 301 is fixed on the top of the gear ring 302, the gear ring 302 is rotatably arranged on the top of the gear ring support 303, the gear ring 302 is meshed with the gear 304, and the gear 304 is fixedly sleeved on the output shaft of the first motor 305.

Further, a sand box cover plate 2 is arranged at the top of the sand box body 1, a second annular support plate 201 is fixed at the edge of the sand box cover plate 2, and four positioning rods 202 uniformly distributed along the circumference are fixed at the bottom of the second annular support plate 201; the top edge of the sand box body 1 is fixed with a first annular support plate 101, four positioning holes 102 uniformly distributed along the circumference are formed in the first annular support plate 101, and the positioning holes 102 are matched with the positioning rods 202.

The operation process of the embodiment is as follows: the first motor 305 drives the gear 304 to rotate, the gear 304 drives the gear ring 302 to rotate along the gear ring supporting frame 303, and the gear ring 302 drives the ultrasonic generator 301 to rotate along the sand box body 1, so that the ultrasonic generator 301 can perform ultrasonic compaction treatment on each position in the sand box body 1, the mobility and filling performance of sand materials are effectively improved, the sand materials are more uniformly filled into a die, gaps and bubbles in the sand materials are reduced, the quality and the precision of castings are improved, and the generation of casting defects is reduced.

Second embodiment

Referring to fig. 1-3, in accordance with a first embodiment, the sand ultrasonic compaction device further comprises a lifting mechanism 4, wherein the sand ultrasonic compaction device 3 is fixed on the lifting mechanism 4, and is driven to lift by the lifting mechanism 4.

Specifically, the lifting mechanism 4 includes a lifting plate 401, a first nut seat 402, a first screw 403, a top seat 404, a reduction gearbox 405, a second motor 406, and a first guide rod 407; one end of the lifting plate 401 is sleeved outside the sand box body 1, the top of the lifting plate is fixedly provided with a gear ring supporting frame 303, the other end of the lifting plate is fixedly connected with a first nut seat 402, and the bottom of the lifting plate is fixedly provided with a first motor 305; the first nut seat 402 is movably sleeved on the first screw rod 403, the top end of the first screw rod 403 is rotationally connected with the top seat 404, the bottom end of the first screw rod 403 is fixedly connected with the output shaft of the reduction gearbox 405, and the input shaft of the reduction gearbox 405 is fixedly connected with the output shaft of the second motor 406; a first guide rod 407 is fixed between the top base 404 and the reduction gearbox 405, and the first guide rod 407 movably penetrates through the lifting plate 401.

The operation process of the embodiment is as follows: the second motor 406 drives the reduction gearbox 405 to rotate, the reduction gearbox 405 drives the first lead screw 403 to rotate, the first lead screw 403 drives the first nut seat 402 to move, the first nut seat 402 drives the lifting plate 401 to move along the first guide rod 407, and the lifting plate 401 drives the sand ultrasonic compaction assembly 3 to move, so that the adjustment of the height of the ultrasonic generator 301 can be realized, and compaction during sand layered filling is adapted.

Detailed description of the preferred embodiments

Referring to fig. 1 and 4-5, the positioning device further includes a positioning component 5 according to the first embodiment and the second embodiment; a balance shaft shell model 6 is placed in the sand box body 1, a central round hole of the balance shaft shell model 6 is vertically arranged, and a positioning assembly 5 is positioned in the central round hole and used for stably positioning the balance shaft shell model 6 in the sand box body 1; the positioning assembly 5 comprises an inner box body 501, an inner box cover 502, a tightening unit 503 and an adjusting unit 504; the inner box body 501 is fixed on the inner top surface of the sand box body 1, the inner box cover 502 is used for sealing the inner box body 501, four supporting units 503 are arranged, the four supporting units 503 are uniformly distributed around the inner box body 501 along the circumference and movably inserted into the inner box body 501, and the adjusting unit 504 is positioned in the inner box body 501 and drives the four supporting units 503 to move simultaneously in a mechanical transmission mode.

Specifically, the tightening unit 503 includes a tightening plate 503a, a U-shaped frame 503b, a second nut seat 503c, a second screw rod 503d, a supporting seat 503e, a first bevel gear 503f, and a second guide rod 503g; the outer side surface of the tightening plate 503a is set to be a cambered surface and is abutted against the inner wall of the central circular hole of the balance shaft shell model 6, a U-shaped frame 503b is fixed on the inner side surface of the tightening plate 503a, the U-shaped frame 503b is fixedly connected with a second nut seat 503c, the second nut seat 503c is movably sleeved on a second screw rod 503d, the second screw rod 503d is supported by a supporting seat 503e, and a first bevel gear 503f is fixedly sleeved at the end part of the second screw rod 503 d; a second guide rod 503g is fixed on the side surface of the supporting seat 503e, and the second guide rod 503g movably penetrates through the U-shaped frame 503b.

Further, the adjusting unit 504 includes a second bevel gear 504a, a rotating shaft 504b, a bearing housing 504c, and a rotating frame 504d; the second bevel gear 504a is meshed with the first bevel gear 503f, the second bevel gear 504a is fixedly sleeved at the bottom end of the rotating shaft 504b, the rotating shaft 504b is supported by the bearing block 504c, and the rotating frame 504d is fixed at the top end of the rotating shaft 504 b.

The operation process of the embodiment is as follows: the rotating frame 504d is rotated, the rotating frame 504d drives the rotating shaft 504b to rotate, the rotating shaft 504b drives the second bevel gears 504a to rotate, the second bevel gears 504a drive the four first bevel gears 503f to simultaneously rotate, the four first bevel gears 503f drive respective second screw rods 503d to rotate, the second screw rods 503d drive the second nut seats 503c to move, the second nut seats 503c drive the U-shaped frames 503b to move along the second guide rods 503g, and the U-shaped frames 503b drive the tightening plates 503a to move, so that the balance shaft shell model 6 can be stably and accurately positioned in the sand box body 1, movement or deformation in the casting process is prevented, a good foundation is laid for the subsequent casting process, and the adjustability of the positioning assembly 5 enables the positioning assembly to adapt to the use of balance shaft shell models 6 with different specifications.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. A balance shaft shell lost foam mould comprises a sand box body (1), a sand ultrasonic compaction assembly (3), a lifting mechanism (4) and a positioning assembly (5); the method is characterized in that:

The sand ultrasonic compaction assembly (3) surrounds the outside of the sand box body (1), the sand ultrasonic compaction assembly (3) is fixed on the lifting mechanism (4), and the lifting mechanism (4) drives the sand ultrasonic compaction assembly to lift;

A balance shaft shell model (6) is arranged in the sand box body (1), a central round hole of the balance shaft shell model (6) is vertically arranged, and a positioning assembly (5) is positioned in the central round hole and used for stably positioning the balance shaft shell model (6) in the sand box body (1);

The positioning assembly (5) comprises an inner box body (501), an inner box cover (502), a tightening unit (503) and an adjusting unit (504);

The sand box is characterized in that the inner box body (501) is fixed on the inner top surface of the sand box body (1), the inner box cover (502) is used for sealing the inner box body (501), four supporting units (503) are arranged and uniformly distributed around the inner box body (501) along the circumference, the inner box body is movably inserted into the inner box body (501), and the adjusting units (504) are located in the inner box body (501) and drive the four supporting units (503) to move simultaneously in a mechanical transmission mode.

2. The balance shaft shell lost foam mould according to claim 1, wherein a sand box cover plate (2) is arranged at the top of the sand box body (1), a second annular support plate (201) is fixed at the edge of the sand box cover plate (2), and four positioning rods (202) uniformly distributed along the circumference are fixed at the bottom of the second annular support plate (201);

The sand box is characterized in that a first annular support plate (101) is fixed at the edge of the top end of the sand box body (1), four positioning holes (102) uniformly distributed along the circumference are formed in the first annular support plate (101), and the positioning holes (102) are matched with the positioning rods (202).

3. The balance shaft housing lost foam pattern mold according to claim 1, wherein the sand ultrasonic compaction assembly (3) comprises an ultrasonic generator (301), a gear ring (302), a gear ring support (303), a gear (304) and a first motor (305);

The ultrasonic generator (301) is fixed at the top of the gear ring (302), the gear ring (302) is rotatably arranged at the top of the gear ring supporting frame (303), the gear ring (302) is meshed with the gear (304), and the gear (304) is fixedly sleeved on an output shaft of the first motor (305).

4. A balance shaft housing lost foam mould according to claim 3, wherein the lifting mechanism (4) comprises a lifting plate (401), a first nut seat (402), a first screw (403), a top seat (404), a reduction gearbox (405), a second motor (406) and a first guide rod (407);

One end of the lifting plate (401) is sleeved outside the sand box body (1), the top of the lifting plate is fixedly provided with the gear ring supporting frame (303), the other end of the lifting plate is fixedly connected with the first nut seat (402), and the bottom of the lifting plate is fixedly provided with the first motor (305);

The first nut seat (402) is movably sleeved on the first screw rod (403), the top end of the first screw rod (403) is rotationally connected with the top seat (404), the bottom end of the first screw rod (403) is fixedly connected with the output shaft of the reduction gearbox (405), and the input shaft of the reduction gearbox (405) is fixedly connected with the output shaft of the second motor (406);

The first guide rod (407) is fixed between the top seat (404) and the reduction gearbox (405), and the first guide rod (407) movably penetrates through the lifting plate (401).

5. The balance shaft housing lost foam mold according to claim 1, wherein the tightening unit (503) comprises a tightening plate (503 a), a U-shaped frame (503 b), a second nut seat (503 c), a second screw (503 d), a supporting seat (503 e), a first bevel gear (503 f) and a second guide rod (503 g);

The U-shaped frame (503 b) is fixed on the inner side surface of the tightening plate (503 a), the U-shaped frame (503 b) is fixedly connected with the second nut seat (503 c), the second nut seat (503 c) is movably sleeved on the second screw rod (503 d), the second screw rod (503 d) is supported by the supporting seat (503 e), and the end part of the second screw rod (503 d) is fixedly sleeved with the first bevel gear (503 f);

The second guide rod (503 g) is fixed on the side surface of the supporting seat (503 e), and the second guide rod (503 g) movably penetrates through the U-shaped frame (503 b).

6. The lost foam casting mold for the balance shaft housing according to claim 5, wherein the outer side surface of the tightening plate (503 a) is an arc surface and is abutted against the inner wall of the central circular hole of the balance shaft housing mold (6).

7. The balance shaft housing lost foam mould according to claim 5, wherein the adjustment unit (504) comprises a second bevel gear (504 a), a rotation shaft (504 b), a bearing housing (504 c) and a swivel (504 d);

The second bevel gear (504 a) is meshed with the first bevel gear (503 f), the second bevel gear (504 a) is fixedly sleeved at the bottom end of the rotating shaft (504 b), the rotating shaft (504 b) is supported by the bearing seat (504 c), and the rotating frame (504 d) is fixed at the top end of the rotating shaft (504 b).