CN214557290U - Low-pressure casting device for lead-free basin body - Google Patents

Abstract

The utility model provides a low pressure casting device of unleaded basin body, the low pressure casting device of unleaded basin body include the mould and with mould matched with molten metal heating pressurization system, the mould includes left mould, right mould, the gating system, core, filter screen, rising head. The right die is matched with the left die. The pouring system is arranged on the matching surface of the left die and the right die and comprises a pouring gate, a pouring gate and a casting cavity, the pouring gate is arranged at the bottom of the die, one end of the pouring gate is connected with the pouring gate, and the other end of the pouring gate is communicated with the casting cavity. The core is arranged in the casting cavity. The filter screen is arranged at the position of the pouring gate. The riser is arranged at the top of the mold and communicated with the casting cavity. The utility model provides a low pressure casting device of unleaded basin body can reduce the probability that defects such as inclusion and shrinkage porosity appear in the foundry goods in the preparation unleaded basin body, improves the quality of the unleaded basin body of casting out.

Description

Low-pressure casting device for lead-free basin body

Technical Field

The utility model relates to a casting field especially relates to a low pressure casting device of leadless basin body.

Background

Along with the improvement of living standard, people also enrich and diversify the demands on bathroom products. Sanitary products are also gradually evolving from single functions to multi-functional integration today. The requirements on production are higher and higher, and the difficulty of production control is higher and higher. Particularly, serious quality problems such as slag inclusion, product leakage and the like frequently occur to the electronic induction basin body product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low pressure casting device of leadless basin body for when solving among the prior art leadless basin body and adopting cast mode to make, there is a large amount of technical problem of pressing from both sides sediment and shrinkage porosity in the inside product of making.

In order to achieve the above object, the utility model adopts the following technical scheme: the low-pressure casting device of the lead-free basin body comprises a mould and a molten metal heating and pressurizing system matched with the mould, wherein the mould comprises:

a left die;

the right die is matched with the left die;

the pouring system is arranged on the matching surface of the left die and the right die and comprises a pouring gate, a pouring gate and a casting cavity, the pouring gate is arranged at the bottom of the die, one end of the pouring gate is connected with the pouring gate, and the other end of the pouring gate is communicated with the casting cavity;

a core disposed within the casting cavity;

the filter screen is arranged at the position of the pouring gate and is used for filtering impurities in the molten metal entering the inner cavity of the mold through the pouring gate;

and the riser is arranged at the top of the mold and communicated with the casting cavity.

In one embodiment, the riser is in the structure of an open riser, and the riser is arranged in the core.

In one embodiment, the gate is of a bifurcated configuration.

In one embodiment, the filter screen is made of a graphite fiber material or a ceramic material.

In one embodiment, the molten metal heating and pressurizing system comprises:

the resistance heating furnace is used for heating and melting metal required by a product to form molten metal;

the pressurizing system is arranged outside the resistance heating furnace and is used for pressurizing the molten metal in the resistance heating furnace;

and one end of the liquid lifting pipe extends into the molten metal, the other end of the liquid lifting pipe is communicated with a pouring gate of the mold, and the liquid lifting pipe is used for conveying the molten metal in the resistance heating furnace to the interior of the mold.

In one embodiment, the core is made of raw sand mixed with resin, and the surface of the core is coated with dry graphite powder.

The embodiment of the present invention provides one or more technical solutions, which at least have the following technical effects or advantages:

the embodiment of the utility model provides a pair of low pressure casting device of unleaded basin body, the low pressure casting device of unleaded basin body include the mould and with mould matched with molten metal heating pressurization system, the mould includes left mould, right mould, gating system, core, filter screen, rising head. The right die is matched with the left die. The pouring system is arranged on the matching surface of the left die and the right die and comprises a pouring gate, a pouring gate and a casting cavity, the pouring gate is arranged at the bottom of the die, one end of the pouring gate is connected with the pouring gate, and the other end of the pouring gate is communicated with the casting cavity. The core is arranged in the casting cavity. The filter screen is arranged at the position of the pouring gate and used for filtering impurities in the molten metal entering the inner cavity of the mold through the pouring gate. The riser is arranged at the top of the mold and communicated with the casting cavity. Through setting up the filter screen in runner position for mix with in the molten metal under the filtration separation effect of filter screen, stay in the filter screen, and then reduce the volume of mixing with that enters into the inside molten metal of mould cavity by a wide margin, and then improve the quality of foundry goods. Meanwhile, the metal liquid flows more orderly under the rectification action of the filter screen, and the probability of phenomena such as gas entrainment and the like caused by turbulent flow of the metal liquid is reduced. And a riser is arranged at a casting hot junction (a thick part of the casting) for feeding, so that shrinkage porosity at the position of the casting hot junction which is solidified at last can be fed by molten metal in the riser, and the phenomenon of shrinkage porosity of the casting is avoided. To sum up, the utility model provides a low pressure casting device of leadless basin body can reduce the probability that defects such as inclusion and shrinkage porosity in the foundry goods appear in the preparation leadless basin body, improves the quality of the leadless basin body of casting out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a left mold according to an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural diagram of a right mold according to an embodiment of the present invention;

fig. 4 is a left side view of fig. 3.

Wherein, in the figures, the respective reference numerals:

1. a left die; 2. a right die; 3. a pouring system; 4. a core; 5. a filter screen; 6. a riser; 31. a gate; 32. a pouring channel; 33. and (4) a casting cavity.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, an embodiment of the present application provides a low-pressure casting apparatus for a lead-free basin body, which includes a mold and a molten metal heating and pressurizing system matched with the mold, wherein the mold includes a left mold 1, a right mold 2, a pouring system 3, a core 4, a filter screen 5, and a riser 6. The right die 2 is matched with the left die 1. The pouring system 3 is arranged on the matching surface of the left die 1 and the right die 2, the pouring system 3 comprises a pouring gate 31, a pouring gate 32 and a casting cavity 33, the pouring gate 31 is arranged at the bottom of the die, one end of the pouring gate 32 is connected with the pouring gate 31, and the other end of the pouring gate 32 is communicated with the casting cavity 33. The core 4 is disposed in the casting cavity 33. The filter screen 5 is arranged at the position of the pouring gate 31, and the filter screen 5 is used for filtering impurities in the molten metal entering the inner cavity of the die through the pouring gate 31. The riser 6 is arranged at the top of the mold, and the riser 6 is communicated with the casting cavity 33. Through setting up filter screen 5 in runner 31 position for mix with in the molten metal under filter screen 5's filtration separation effect, stay in filter screen 5, and then reduce the volume of mixing with that enters into the inside molten metal of mould cavity by a wide margin, and then improve the quality of foundry goods. Meanwhile, the metal liquid flows more orderly through the rectification function of the filter screen 5, and the probability of phenomena such as gas entrainment and the like caused by turbulent flow of the metal liquid is reduced. And the riser 6 is arranged at the casting hot spot (the thick part of the casting) for feeding, so that the shrinkage porosity at the cast hot spot which is solidified at last can be fed by the molten metal in the riser 6, and the phenomenon of shrinkage porosity of the casting is avoided. To sum up, the utility model provides a low pressure casting device of leadless basin body can reduce the probability that defects such as inclusion and shrinkage porosity in the foundry goods appear in the preparation leadless basin body, improves the quality of the leadless basin body of casting out.

In one embodiment, the feeder 6 is of a structure with an open feeder 6, the feeder 6 is arranged in the core 4, one side of the feeder 6 is communicated with the casting cavity 33, the feeder 6 is arranged in the core 4 while the casting is fed, the space occupied by the feeder 6 is reduced, and the size of the mold is further reduced, and the core 4 is made of a sand core, so that the heat dissipation performance is lower than that of the mold, the time for solidifying molten metal for feeding in the feeder 6 is longer, the feeder 6 can maintain the feeding capacity for a longer time, and the probability of casting loosening is further reduced.

In one embodiment, the gate 31 is a bifurcated structure, and the gate 31 is bifurcated to form a plurality of channels communicating with the gate 32, so that the molten metal flows slowly after entering the gate 32 through the gate 31, thereby avoiding molten metal turbulence and reducing the probability of defects such as shrinkage cavity and the like caused by molten metal entrainment.

In one embodiment, the filter screen 5 is made of a graphite fiber material or a ceramic material. Graphite fiber material or ceramic material homoenergetic enough bear very high temperature, and when filtering the molten metal, the molten metal can not destroy filter screen 5's structure for filter screen 5 can filter the inclusion in the molten metal.

In one embodiment, the molten metal heating and pressurizing system comprises a resistance heating furnace, a riser tube and a pressurizing system. The resistance heating furnace is used for heating and melting metal required by product production into molten metal. The pressurizing system is arranged outside the resistance heating furnace and used for pressurizing the molten metal in the resistance heating furnace. One end of the riser tube extends into the molten metal, the other end of the riser tube is communicated with a pouring gate 31 of the mold, and the riser tube is used for conveying the molten metal in the resistance heating furnace to the interior of the mold.

In one embodiment, the core 4 is made of raw sand mixed with resin, and the surface of the core 4 is coated with dry graphite powder. Dry graphite powder is smeared on the surface of the core 4, so that the surface of the core 4 is not easy to shrink in the process of carrying out the die, the cleanliness of the surface of the inner cavity of the casting is improved, and meanwhile, the follow-up process of removing the sand core is more convenient.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A low pressure casting device of a lead-free basin body, the low pressure casting device of the lead-free basin body comprises a mold and a molten metal heating and pressurizing system matched with the mold, and is characterized in that the mold comprises:

a left die;

the right die is matched with the left die;

the pouring system is arranged on the matching surface of the left die and the right die and comprises a pouring gate, a pouring gate and a casting cavity, the pouring gate is arranged at the bottom of the die, one end of the pouring gate is connected with the pouring gate, and the other end of the pouring gate is communicated with the casting cavity;

a core disposed within the casting cavity;

the filter screen is arranged at the position of the pouring gate and is used for filtering impurities in the molten metal entering the inner cavity of the mold through the pouring gate;

and the riser is arranged at the top of the mold and communicated with the casting cavity.

2. The low pressure casting apparatus of a lead-free basin body as claimed in claim 1, wherein:

the riser is of an open riser structure and is arranged in the core.

3. The low pressure casting apparatus of a lead-free basin body as claimed in claim 1, wherein:

the sprue is of a bifurcated structure.

4. The low pressure casting apparatus of a lead-free basin body as claimed in claim 1, wherein:

the filter screen is made of graphite fiber materials or ceramic materials.

5. The low pressure casting apparatus of a lead-free basin body as claimed in claim 1, wherein the molten metal heating and pressurizing system comprises:

the resistance heating furnace is used for heating and melting metal required by a product to form molten metal;

the pressurizing system is arranged outside the resistance heating furnace and is used for pressurizing the molten metal in the resistance heating furnace;

and one end of the liquid lifting pipe extends into the molten metal, the other end of the liquid lifting pipe is communicated with a pouring gate of the mold, and the liquid lifting pipe is used for conveying the molten metal in the resistance heating furnace to the interior of the mold.

6. The low pressure casting apparatus of a lead-free basin body as claimed in claim 1, wherein:

the mold core is prepared by mixing raw sand and resin, and dry graphite powder is coated on the surface of the mold core.

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