CN218475968U

CN218475968U - Mould for casting sand mold of steel casting inner pump body

Info

Publication number: CN218475968U
Application number: CN202222612823.2U
Authority: CN
Inventors: 邹本顺; 李佳兴; 张绍旭; 吴镝
Original assignee: Shenyang Sanke Valves Industry Co ltd
Current assignee: Shenyang Sanke Valves Industry Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-14
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to a mould for sand casting of an inner pump body of a steel casting, which comprises an outer mould and a core box, wherein the outer mould comprises an upper outer mould sample and a lower outer mould sample which are connected through an outer mould positioning spigot in a clamping manner; the outer mold core heads which play a role in positioning and fixing are arranged on the upper box outer mold real sample and the lower box outer mold real sample; an inner pouring gate positioning block used for determining the position of the inner pouring gate is arranged on the outer mold sample of the lower box; a riser is arranged on the outer mold sample of the upper box; the core box comprises a core box shell and a core box loose piece, and the core box loose piece is movably arranged on the core box shell; the core assembly process of the utility model adopts the core head positioning mode, which is convenient for core assembly and effectively ensures the dimensional precision in the mould assembling process; the mould includes the ingate locating piece, and the ingate is located blind riser below behind the core assembly, can effectual assurance product's inherent quality.

Description

Mould for casting sand mold of steel casting inner pump body

Technical Field

The utility model relates to a mould technical field for sand casting especially relates to a mould for casting of cast steel inner pump body sand mould.

Background

In recent years, with the rapid development of economic construction in China, the product demand is continuously expanded due to the fact that the cast steel inner pump body product has outstanding mechanical properties and relatively low manufacturing cost.

However, the product has a complex structure, particularly the runner part has large outer diameter and height, the internal quality requirement is relatively strict, and the wall thickness of the product is large, so that the structure of the die is complex, the core assembly difficulty is increased, the cost of the die is increased, and the die is not easy to hoist, shape and the like. Therefore, the casting difficulty is higher than that of a common product, and the conditions of unqualified product size and excessive casting defects often occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cast steel piece internal pump body mould for sand casting to the problem that exists in the above-mentioned actual production process, guaranteed cast steel piece internal pump body size's accuracy and the requirement of internal quality in the actual production process.

The utility model discloses technical scheme as follows:

the die for sand casting of the steel casting inner pump body comprises an outer die and a core box, wherein the outer die comprises an upper box outer die sample and a lower box outer die sample, and the upper box outer die sample and the lower box outer die sample are connected through outer die positioning rabbets in a clamping manner; the outer mold core heads which play a role in positioning and fixing are arranged on the upper box outer mold real sample and the lower box outer mold real sample; an inner pouring gate positioning block used for determining the position of the inner pouring gate is arranged on the outer mold sample of the lower box; a riser is arranged on the outer mold sample of the upper box; the core box comprises a core box shell and a core box loose piece, and the core box loose piece is movably arranged on the core box shell.

The upper box outer mold real sample, the lower box outer mold real sample and the core box are all formed by sticking and combining wood multilayer boards, and cross-shaped batten stable structures are arranged inside the upper box outer mold real sample and the lower box outer mold real sample.

The riser is four waist risers, and the size of each waist riser is 220mm long, 70mm wide, 350mm high, and the slope ratio of the draft is 1.

And a blind riser for feeding the bottom of the casting is arranged in the core box.

The blind riser is connected with the bottom of the casting in a three-fork mode.

The core box shell and the core box loose piece form a complete core box through the core box positioning spigot.

And a sand preparing hole is formed on the shell of the core box or the loose block of the core box.

The core box is internally provided with a core box core print which plays a role in connecting and fixing cores.

The utility model has the advantages as follows:

1. the outer die and the core box are formed by sticking wood multilayer boards, and the multilayer boards are combined for use, so that the deformation in the use process is avoided, and the service life is prolonged.

2. The core assembly process adopts a core head positioning mode, so that the core assembly is convenient, and the dimensional precision in the mould assembling process is effectively ensured.

3. The mould includes the ingate locating piece, and the ingate is located blind riser below behind the core assembly, can effectual assurance product's inherent quality.

4. The core box loose piece is fixed on the core box shell through the positioning spigot, thereby facilitating the sand preparation and the profile recovery.

5. The structure is simple, the weight is light, and the operation is convenient; has strong adaptability and cost saving, and completely meets the production requirement of the existing actual products.

Drawings

FIGS. 1a and 1b are schematic structural views of a lower box outer mold of the present invention;

fig. 2a and 2b are schematic structural diagrams of an upper box outer mold sample of the present invention;

fig. 3a and 3b are schematic structural diagrams of the No. 1 core box assembly of the present invention;

fig. 4a and 4b are schematic structural diagrams of the No. 2 core box assembly of the present invention;

fig. 5a and 5b are schematic structural views of the No. 3 core box assembly of the present invention;

fig. 6a and 6b are schematic structural diagrams of a No. 4 core box assembly of the present invention;

fig. 7a and 7b are schematic structural views of the No. 5 core box assembly of the present invention;

fig. 8a and 8b are schematic structural views of the No. 6 core box assembly of the present invention;

fig. 9a and 9b are schematic structural diagrams of No. 7 core box assembly of the present invention.

In the figure, 1, a batten, 2, an external mold core print, 3, an inner pouring gate positioning block, 4, an external mold positioning spigot, 5, a riser, 6, a core box loose block, 7, a core box shell, 8, a sand preparing hole, 9, a core box core print, 10, a blind riser, 11, a trifurcate, 12, a core box positioning spigot, 13, a lower box external mold real sample, 14 and an upper box external mold real sample.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Examples

As shown in FIGS. 1a, 1b, 2a and 2b, a mold for sand casting of an inner body of a steel casting, a ladle

The outer die comprises an upper die outer die real sample 14 and a lower die outer die real sample 13, wherein the upper die outer die real sample and the lower die outer die real sample are connected through an outer die positioning spigot 4 in a clamping manner; the outer mold core heads 2 with positioning and fixing functions are arranged on the upper mold outer mold sample and the lower mold outer mold sample; an inner pouring gate positioning block 3 for determining the position of an inner pouring gate is arranged on the outer mold sample of the lower box; a riser 5 is arranged on the outer mold sample of the upper box; the feeder is four waist feeders, each waist feeder is 220mm long, 70mm wide and 350mm high, and the slope ratio of the pattern drawing slope is 1.

The upper box outer mold full sample, the lower box outer mold full sample and the core box are all formed by sticking and combining wood multilayer boards, and cross batten 1 stabilizing structures are arranged inside the upper box outer mold full sample and the lower box outer mold full sample.

The core box comprises a core box shell 7 and a core box loose piece 6, wherein the core box loose piece is movably arranged in the core box shell

On the core box shell, the core box shell and the core box loose piece form a complete core box through the core box positioning spigot 12. A blind riser 10 which feeds the bottom of the casting is arranged in the core box. The blind riser is connected with the bottom of the casting in a trifurcate 11 mode.

And a prepared sand hole 8 is formed on the shell of the core box or the loose block of the core box. In the core box

The core box core print 9 is arranged in the core box core print seat and plays a role in connecting and fixing the cores.

As shown in FIGS. 3a-9b, the core box of the present invention comprises a No. 1 core box, a No. 2 core box, and a No. 3 core box

The core box comprises 7 core boxes, namely a 4# core box, a 5# core box, a 6# core box and a 7# core box. As shown in figures 3a and 3b, the 1# core box is assembled by a core box loose piece 6 and a core box shell 7 through a core

box positioning rabbet

12, 2 sand preparing holes 8 are opened on the core box loose piece 6, and a core box core head 9, a blind riser 10 and a trigeminal 11 are arranged inside the core box shell 7. As shown in fig. 4a and 4b, the 2# core box is assembled by a core box loose piece 6 and a core box shell 7 through a core box positioning spigot 12, and a core box core head 9 is arranged inside the core box shell 7. As shown in figures 5a and 5b, the 3# core box is assembled by a core box loose piece 6 and a core box outer skin 7 through a core box positioning spigot 12, and a blind riser 10 is arranged inside a core box shell 7. As shown in figures 6a and 6b, the 4# core box is assembled by a core box loose piece 6 and a core box shell 7 through a core box positioning rabbet 12. As shown in figures 7a and 7b, the 5# core box is assembled by a core box loose piece 6 and a core box shell 7 through a core box positioning rabbet 12. As shown in fig. 8a and 8b, the 6# core box is assembled by a core box loose piece 6 and a core box shell 7 through a core box positioning rabbet 12, and a core box core head 9 is arranged inside the core box shell 7. As shown in figures 9a and 9b, the 7# core box is assembled by the core box loose piece 6 and the core box outer shell 7 through the core box positioning rabbet 12.

The utility model discloses a working process as follows:

the first step is as follows: the assembled outer mold, core box, is placed on the build platform as shown in fig. 1a-9 b.

The second step is that: and filling self-hardening resin molding sand into the corresponding sand box on the outer mold sleeve, and tamping. And filling self-hardening resin molding sand into the core box, and tamping.

The third step: and waiting for the molding sand to be chemically hardened.

The fourth step: and (4) forming.

The utility model discloses the size that is particularly useful for external diameter and height is great, and the wall thickness is great, and the runner is complicated, and the core assembly degree of difficulty is big, pump body casting molding process in size and the strict steel casting of inherent quality requirement.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

What has just been said is the utility model discloses a concrete embodiment and the technical principle who utilizes, any basis the utility model discloses equivalent change on the scheme basis all belongs to within the protection scope of the utility model.

Claims

1. A mould for sand casting of an inner pump body of a steel casting comprises an outer mould and a core box, and is characterized in that the outer mould comprises an upper box outer mould sample and a lower box outer mould sample, and the upper box outer mould sample and the lower box outer mould sample are connected through an outer mould positioning spigot in a clamping manner; the outer mold core heads which play a role in positioning and fixing are arranged on the upper outer mold sample and the lower outer mold sample; an inner pouring gate positioning block used for determining the position of an inner pouring gate is arranged on the outer mold sample of the lower box; a riser is arranged on the outer mold sample of the upper box; the core box comprises a core box shell and a core box loose piece, and the core box loose piece is movably arranged on the core box shell.

2. The mold for sand casting of the steel casting inner pump body according to claim 1, wherein the upper box outer mold full pattern, the lower box outer mold full pattern and the core box are formed by pasting and combining wood multi-layer plates, and cross-shaped batten stable structures are arranged inside the upper box outer mold full pattern and the lower box outer mold full pattern.

3. The mold for sand casting of steel casting inner pump bodies according to claim 1, wherein the mold comprises a mold base and a mold cover

4. The mold for sand casting of steel casting inner pump bodies according to claim 1, wherein the mold comprises a mold base and a mold cover

5. The mold for sand casting of steel casting inner pump bodies according to claim 4, wherein the mold comprises a plurality of molds, each mold having a plurality of grooves, and each mold having a plurality of grooves

The blind riser is connected with the bottom of the casting in a trifurcate mode.

6. The mold for sand casting of an inner pump body of a steel casting according to claim 1, wherein the mold is characterized in that

7. The mold for sand casting of an inner pump body of a steel casting according to claim 1, wherein the mold is characterized in that

And a prepared sand hole is formed on the core box shell or the core box loose piece.

8. The mold for sand casting of the steel casting inner pump body according to claim 1, wherein a core box core head for connecting and fixing the cores is arranged inside the core box.