CN215090492U

CN215090492U - Upper die main body insert structure of lost foam impeller

Info

Publication number: CN215090492U
Application number: CN202120339989.4U
Authority: CN
Inventors: 张晴晴
Original assignee: First Mock Exam Co ltd Of Jiaozuo
Current assignee: First Mock Exam Co ltd Of Jiaozuo
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-12-10
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to an mould main part mold insert structure on impeller disappearance mould, including four last mould main part circumference mold inserts that encircle the central line setting in the mould main part chamber on the impeller disappearance mould, mould main part mold insert structure still includes the last mould main part top mold insert that sets up on the main part chamber roof in the middle of four last mould main part circumference mold inserts on the impeller disappearance mould, and mould main part mold insert structure still includes the last mould main part center mold insert that sets up with main part chamber central line collineation on the impeller disappearance mould. The insert of the upper die body of the lost foam impeller is arranged into four main parts, namely a circumferential part, a top part and a central part, wherein the circumferential part is divided into four pairs, so that the insert is convenient to process and manufacture, and the insert can be taken out and replaced when a local part has a problem. Compared with the prior art, the upper die main body insert structure of the lost foam impeller is novel in structure, good in forming effect and high in efficiency.

Description

Upper die main body insert structure of lost foam impeller

Technical Field

The utility model belongs to the mould field, concretely relates to mould main part mold insert structure on impeller disappearance mould.

Background

Lost foam casting (also called solid casting) is a novel casting method which comprises the steps of bonding and combining paraffin or foam models with similar sizes and shapes to form a model cluster, coating refractory paint on the model cluster, drying the model cluster, burying the model cluster in dry quartz sand for vibration modeling, pouring under negative pressure to gasify the model, enabling liquid metal to occupy the position of the model, solidifying and cooling the model cluster to form a casting. The lost foam white mold comprises two types of mold foaming molding, mechanical processing and manual processing molding, and adopts a mold foaming molding method for medium and small white molds for mass and batch production; for large and medium-sized white molds for single-piece and small-batch production, a mechanical processing and manual processing forming method is adopted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an mould main part mold insert structure on novel structure, effectual, the efficient impeller disappearance mould of shaping.

In order to achieve the above object, the utility model discloses an upper die main body mold insert structure adopts following technical scheme on the impeller disappearance mould: the upper die main body insert structure of the lost foam impeller comprises four upper die main body circumferential inserts arranged around the central line of an upper die main body cavity of the lost foam impeller, the upper die main body insert structure of the lost foam impeller further comprises upper die main body top inserts arranged on the top wall of the main body cavity in the middles of the four upper die main body circumferential inserts, and the upper die main body insert structure of the lost foam impeller further comprises an upper die main body central insert arranged in a collinear manner with the central line of the main body cavity.

Has the advantages that: the insert of the upper die body of the lost foam impeller is arranged into four main parts, namely a circumferential part, a top part and a central part, wherein the circumferential part is divided into four pairs, so that the insert is convenient to process and manufacture, and the insert can be taken out and replaced when a local part has a problem. Compared with the prior art, the upper die main body insert structure of the lost foam impeller is novel in structure, good in forming effect and high in efficiency.

Furthermore, each upper die main body circumferential insert comprises a circumferential insert outer positioning plate with a trapezoidal structure and a circumferential insert inner molding plate attached to the inner wall of the circumferential insert outer positioning plate, and the circumferential insert inner molding plate is used for forming a molding interval for the foaming material to enter with the lower die main body insert in the up-down direction.

Furthermore, a movable block is arranged between two adjacent forming plates in the circumferential insert respectively, and a movable block slot for inserting the movable block is arranged on each forming plate in the circumferential insert, and the shape of the movable block slot is consistent with that of the movable block.

Furthermore, the insert at the top of the upper die body is of a circular truncated cone structure with a large top and a small bottom, the large diameter end of the insert at the top of the upper die body is attached to the middle position of the top wall of the cavity of the upper die body, the small diameter end of the insert at the top of the upper die body is provided with a circular sinking groove, and the upper end of the insert at the center of the upper die body abuts against the circular sinking groove.

Furthermore, the central insert of the upper die main body is of a cylindrical structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;

FIG. 1 is a schematic structural diagram of an impeller lost foam mold;

fig. 2 is an assembly drawing of an upper die of the evaporative pattern impeller, an upper die body insert and an upper die fitting insert (two pairs of upper die body circumferential inserts arranged in opposite directions are omitted);

FIG. 3 is a schematic structural diagram of an upper die of the evaporative pattern for impellers;

FIG. 4 is a schematic view of the top insert of the upper die body;

FIG. 5 is a schematic view of a circumferential insert of the upper die body;

FIG. 6 is a schematic view of the structure of the positioning plate outside the circumferential insert;

FIG. 7 is a schematic view of a contoured plate in a circumferential insert;

FIG. 8 is a first schematic structural view of a loose piece;

FIG. 9 is a second schematic structural view of a loose piece;

FIG. 10 is an assembly view of the lower die with the lower die body insert and the lower die fitting insert;

FIG. 11 is a schematic view of the structure of the lower mold;

FIG. 12 is a schematic view of a lower mold body insert;

FIG. 13 is a schematic view of a lower mold fitting insert;

FIG. 14 is a schematic structural view of the body portion;

fig. 15 is a schematic view of the construction of the fitting part.

In the figure: 100-top mold, 101-body cavity, 102-fitting cavity, 103-body cavity feed channel, 104-fitting cavity feed channel, 105-rib, 106-wedge groove, 200-bottom mold, 300-top mold fitting insert, 400-top mold body insert, 410-top mold body circumferential insert, 411-circumferential insert outer positioning plate, 412-circumferential insert inner molding plate, 4121-loose piece slot, 420-top mold body top insert, 4201-circular sink, 430-top mold body center insert, 440-loose piece, 500-bottom mold body insert, 600-bottom mold fitting insert, 710-body part, 720-fitting part.

Detailed Description

In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 15, the specific embodiment of the evaporative pattern casting mold for impellers includes an upper mold 100 and a lower mold 200, the upper mold 100 is of a tabular structure, the lower mold 200 is of a flat plate structure, two cavities are arranged on the bottom surface of the upper mold 100 at intervals from left to right, one of the cavities is a main body cavity 101, the other is a fitting cavity 102, an upper fitting insert 300 is arranged in the fitting cavity, an upper mold main body insert 400 is arranged in the main body cavity 101, a lower mold main body insert 500 adapted to the upper mold main body insert 400 and a lower fitting insert 600 adapted to the upper fitting insert 300 are arranged on the lower mold 200, a main body cavity feeding channel 103 communicated with the main body cavity 101 and a fitting cavity feeding channel 104 communicated with the fitting cavity 102 are arranged on the upper mold 100.

In one embodiment, the upper die body insert 400 includes four upper die body peripheral inserts 410 disposed around the centerline of the body cavity 101, and the upper die body insert 400 further includes an upper die body top insert 420 disposed on the top wall of the body cavity 101 in the middle of the four upper die body peripheral inserts 410, the upper die body top insert 420 being a truncated cone structure with a large top and a small bottom.

The upper die body insert 400 further comprises an upper die body center insert 430 which is arranged in a collinear manner with the center line of the body cavity 101, the upper die body center insert 430 is of a cylindrical structure, a circular sinking groove 4201 is formed in the small-diameter end of the upper die body top insert 400, and the upper end of the upper die body center insert 430 abuts against the circular sinking groove 4201. Lower mould main part insert 500 is the integral type structure, and lower mould main part insert 500 sets up on lower mould 200 top surface.

In one embodiment, each upper mold body peripheral insert 410 includes a peripheral insert outer positioning plate 411 having a trapezoidal structure and a peripheral insert inner molding plate 412 attached to an inner wall of the peripheral insert outer positioning plate 411, and a molding space for the foaming material is left between the peripheral insert inner molding plate 412 and the lower mold body insert 500 in the up-down direction.

In addition, a loose piece 440 is respectively arranged between two adjacent circumferential insert inner forming plates 412, and a loose piece slot 4121 for inserting the loose piece 440 is arranged on each circumferential insert inner forming plate 412, and the shape of the loose piece is consistent with that of the loose piece 440.

In one embodiment, upper mold fitting insert 300 is formed by the small top and large bottom interior walls of fitting cavity 102, lower mold fitting insert 600 is a truncated cone-shaped structure with a small top and a large bottom, and the outer periphery of lower mold fitting insert 600 is a concave arcuate surface.

In one embodiment, a horizontally disposed rib 105 is disposed on a top wall of the body cavity 101, the rib 105 has a rectangular parallelepiped structure, a body cavity feed channel 103 extends from a position on an outer wall of the upper mold 100 corresponding to the rib 105 toward an interior of the upper mold 100, and the body cavity feed channel 103 extends through the rib 105 in a direction along a length of the rib 105.

In one embodiment, a wedge groove 106 with a smaller upper part and a larger lower part is formed on the top wall of the main body cavity 101 at the end position of the protruding strip 105, and the end surface of the protruding strip 105 is a chamfered surface aligned with the inclined groove wall surface of the wedge groove 106.

In one embodiment, two ribs 105 are disposed on the top wall of the main body cavity 101, the two ribs 105 are disposed at 90 ° intervals, the main body cavity feeding channels 103 are two, and the two main body cavity feeding channels 105 are disposed on the two ribs 105, respectively.

In one embodiment, the main body cavity 101 is a square structure, four right angles of the main body cavity 101 are arranged in a plane, and the accessory cavity 102 is a truncated cone structure with a small upper part and a large lower part.

In one embodiment, the upper mold 100 has a rectangular parallelepiped structure, four right angles of the upper mold 100 are provided as chamfered surfaces, and the lower mold 200 has a shape adapted to the shape of the upper mold 100.

The impeller lost foam mold is matched with a forming machine for use, an upper mold plate of the forming machine is connected with an upper mold 100, the upper mold plate drives the upper mold 100 to complete the opening and closing action of the mold during working, hot steam holes and cooling water holes (omitted in the drawing) are reserved in the upper mold 100, a lower mold plate of the forming machine is connected with a lower mold 200, and the lower mold 200 is fixed. When the automatic material filling machine works, pre-foamed foam particles are respectively filled into the main body cavity 101 and the accessory cavity 102 by an automatic material gun through a negative pressure method, and after filling is finished, hot steam is introduced and pressure is maintained until the foam raw material is completely shaped.

The upper mold plate of the molding machine moves the upper mold 100 upwards, the mold is opened, the foam pattern is taken out from the lower mold 200, the mold opening action is completed, then the upper mold 100 moves downwards, after the mold closing, the material is filled again, the one-step molding process is completed, and the main body part 710 and the accessory part 720 are completed simultaneously.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. Mould main part mold insert structure on impeller disappearance mould, its characterized in that: the upper die body insert structure of the evaporative pattern impeller comprises four upper die body circumferential inserts arranged around the central line of an upper die body cavity of the evaporative pattern impeller, and further comprises upper die body top inserts arranged on the top wall of the body cavity in the middle of the four upper die body circumferential inserts, and the upper die body insert structure of the evaporative pattern impeller further comprises upper die body central inserts arranged in a collinear manner with the central line of the body cavity.

2. The upper die body insert structure of an impeller evaporative die as defined in claim 1, wherein: each upper die main body circumferential insert comprises a circumferential insert outer positioning plate with a trapezoidal structure and a circumferential insert inner molding plate attached to the inner wall of the circumferential insert outer positioning plate, and the circumferential insert inner molding plate is used for forming a molding interval for the foaming material to enter with the lower die main body insert in the upper and lower directions.

3. The upper die body insert structure of the lost foam impeller according to claim 2, wherein: and a movable block is arranged between two adjacent inner molding plates of the circumferential inserts respectively, and a movable block slot for inserting the movable block is arranged on each inner molding plate of the circumferential insert, and the shape of the movable block slot is consistent with that of the movable block.

4. The upper die body insert structure of the evaporative pattern casting machine for impellers of any one of claims 1 to 3, wherein: the insert at the top of the upper die body is of a circular truncated cone structure with a large top and a small bottom, the large diameter end of the insert at the top of the upper die body is attached to the middle position on the top wall of the cavity of the upper die body, the small diameter end of the insert at the top of the upper die body is provided with a circular sinking groove, and the upper end of the insert at the center of the upper die body is abutted to the circular sinking groove.

5. The upper die body insert structure of the evaporative pattern casting machine for impellers of any one of claims 1 to 3, wherein: the central insert of the upper die main body is of a cylindrical structure.