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CN-224222726-U - Lost foam casting of gearbox shell

CN224222726UCN 224222726 UCN224222726 UCN 224222726UCN-224222726-U

Abstract

The utility model relates to the technical field of casting molds and discloses a lost foam casting of a gearbox shell, which comprises a bottom basket, wherein a plurality of stacking baskets are sequentially stacked on the top side of the bottom basket, a top sealing basket is arranged on the top side of the topmost stacking basket, a connecting frame is fixedly connected to the close side of the top sealing basket and the topmost stacking basket, the close side of two adjacent stacking baskets and the close side of the bottom basket and the bottommost stacking basket, a connector is connected to the close side of the two adjacent connecting frames through an erection assembly, and lost foam is fixedly connected to the bottom side of the connector. According to the utility model, the lost foam is fixed between the connecting frames by utilizing the erection component and the hourglass-shaped connector, so that the installation stability of the lost foam is effectively improved, and the lost foam is prevented from shifting in the processes of quartz sand filling, vibration and air extraction, thereby improving the casting precision of the gearbox shell.

Inventors

  • YIN JIAN
  • CHEN LIMING
  • QIAN FENG

Assignees

  • 宜兴市金纳利机械制造有限公司

Dates

Publication Date
20260512
Application Date
20250609

Claims (8)

  1. 1. A lost foam casting for a transmission housing, comprising: The bottom basket (1), a plurality of stacking baskets (2) are stacked on the top side of the bottom basket (1) in sequence, a top sealing basket (3) is arranged on the top side of the stacking basket (2), one close side of the top sealing basket (3) and the stacking basket (2), two adjacent close sides of the stacking basket (2) and one close side of the bottom basket (1) and the stacking basket (2) on the bottom side are fixedly connected with connecting frames (4), one close side of the two adjacent connecting frames (4) is connected with a connector (8) through an erection assembly, a lost foam (7) is fixedly connected on the bottom side of the connector (8), and the bottom basket (1) is communicated with the inside of the stacking basket (2) to form a casting cavity so as to embed the lost foam (7) and fill quartz sand for casting of the gearbox housing; The two exhaust pipes (13), the output of exhaust pipe (13) is two, and fixedly connected with connecting pipe (12), and two adjacent the outer wall cover of connecting frame (4) is equipped with the seal cover, connecting pipe (12) link to each other with the seal cover to make the leakproofness in the gap of concatenation department improve, the cooperation is filled the step of bleeding after the quartz sand, guarantees that the vacuum environment of casting intracavity portion can be generated.
  2. 2. The lost foam casting of a gearbox housing according to claim 1, wherein the erection component comprises a connecting frame (6), the bottom side of the connecting frame (6) is fixedly connected with a connector (8), the left side and the right side of the connecting frame (6) are fixedly connected with fixing frames (5), the adjacent sides of the two adjacent connecting frames (4) are provided with embedding grooves, and the front end and the rear end of each fixing frame (5) are embedded in the embedding grooves.
  3. 3. The lost foam casting of a gearbox housing according to claim 1, wherein the connectors (8) are hourglass-shaped, broken parts (9) are arranged at the middle ends of the connectors, and the connectors (8) are arranged in a plurality and are circumferentially arranged on the top side of the lost foam (7).
  4. 4. The lost foam casting of a gearbox housing according to claim 1, wherein the connecting head (8) and the lost foam (7) are both made of paraffin wax.
  5. 5. The lost foam casting of the gearbox housing according to claim 1, wherein the sealing sleeve comprises a first sealing frame (10) which is connected to the outer walls of two adjacent connecting frames (4) in a sliding mode, one end of the first sealing frame (10) is connected with a second sealing frame (11) through a mounting assembly, the second sealing frame (11) is sleeved on the outer walls of the two adjacent connecting frames (4), two connecting pipes (12) are fixedly connected to the front end and the rear end of the second sealing frame (11) respectively, air exhaust grooves are formed in the inner periphery of the first sealing frame (10), and the connecting pipes (12) are spliced at the openings of the air exhaust grooves.
  6. 6. The lost foam casting of a transmission housing according to claim 5, wherein the mounting assembly comprises a connecting lug plate (14) fixedly connected to the top side of the second sealing frame (11) and a fixing bolt (15), the bottom end of the fixing bolt (15) is in threaded connection with the top side of the first sealing frame (10), the middle end of the fixing bolt (15) is in threaded connection with the inside of the connecting lug plate (14), and the top end of the fixing bolt (15) is fixedly connected with a force application part.
  7. 7. The lost foam casting of a gearbox housing according to claim 1, wherein the input end of the exhaust pipe (13) is externally connected with an air extractor for exhausting air.
  8. 8. The lost foam casting of a gearbox housing according to claim 1, wherein a sand discharge port (16) is fixedly connected to the bottom side of the bottom basket (1), and a flange plate for connecting a valve is fixedly connected to the bottom end of the sand discharge port (16) so as to discharge quartz sand.

Description

Lost foam casting of gearbox shell Technical Field The utility model relates to the technical field of casting molds, in particular to a lost foam casting of a gearbox shell. Background The automobile gearbox is a commonly used structure, the automobile gearbox shell is a relatively complex casting, the automobile gearbox shell is generally manufactured by adopting lost foam casting molding, the lost foam is mainly formed by bonding paraffin or foam models into model clusters, and the lost foam is buried in dry quartz sand for vibration molding after being coated with fireproof paint and dried. Through searching, the gearbox housing casting lost foam for the light truck disclosed by the publication No. CN206392802U comprises a die body, wherein an inner pouring gate is arranged on the side wall of the die body, a liquid guide channel communicated with the inner pouring gate is arranged in the side wall of the die body, a Gao Wenjin-resistant rod is adhered to the outer surface of the die body, a refrigerating fluid guide channel is arranged in the Gao Wenjin-resistant rod, a liquid inlet connector is fixed at the top end of the Gao Wenjin-resistant rod, a ventilation pore communicated with the liquid guide channel is formed in the top surface of the side wall of the die body, and a hollow slag collecting post rod is arranged at the top of the side wall of the die body. The utility model has reasonable structural arrangement, and the Gao Wenjin-resistant rod is adhered on the surface of the die body, so that the die body can be prevented from tilting or deforming when being buried in dry quartz sand for vibration molding, thereby effectively improving the processing quality of castings, solving the technical defect that the lost foam is easy to deform in the traditional technology so as to influence the processing quality, and having good use stability and strong applicability. It is mentioned in the background art that after the fireproof paint is brushed and dried, the fireproof paint is buried in dry quartz sand for vibration modeling, however, the hardness of the lost foam is limited, so that the lost foam is easy to deform or incline when the fireproof paint is buried in the dry quartz sand, the casting quality is affected, high waste is caused, the production cost is increased, and the applicability and the practicability are limited. In order to solve the technical problem, the application provides a lost foam casting of a gearbox housing. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a lost foam casting of a gearbox shell, which aims to solve the problems that lost foam deformation or inclination is easy to occur when dry quartz sand is buried in the prior art, so that casting quality is affected, high waste is caused, production cost is increased, and applicability and practicability are limited. In order to achieve the above purpose, the present utility model provides the following technical solutions: a lost foam casting for a transmission housing, comprising: The bottom basket is sequentially stacked on the top side of the bottom basket, a top sealing basket is arranged on the top side of the top most basket, a connecting frame is fixedly connected to the adjacent side of the top sealing basket, the adjacent side of the bottom basket and the adjacent side of the bottom most basket, a connector is connected to the adjacent side of the connecting frame through an erection assembly, a lost foam is fixedly connected to the bottom side of the connector, and the bottom basket is communicated with the inside of the top most basket to form a casting cavity so as to embed the lost foam and fill quartz sand for casting of a gearbox shell; The exhaust tube, the output of exhaust tube is two, and fixedly connected with connecting pipe, and two adjacent the outer wall cover of connecting the frame is equipped with the seal cover, the connecting pipe links to each other with the seal cover to make the leakproofness in the gap of concatenation department improve, the step of bleeding after the cooperation filling quartz sand guarantees that the vacuum environment of casting intracavity portion can generate. Further, erect the subassembly and include the link, the downside and the connector fixed connection of link, the equal fixedly connected with mount in the left and right sides of link, the gomphosis groove has all been seted up to the close one side of two adjacent connection frames, the inside in gomphosis groove is all gomphosis at both ends around the mount. Further, the connector is in an hourglass shape, the middle end of the connector is provided with breaking parts, and the connectors are multiple in number and are arranged on the top side of the lost foam in a surrounding mode. Further, the connector and the lost foam are both prepared from paraffin. Further, the seal cover comprises a first seal frame which is connected to the outer wall of t