CN219852077U - Pump spiral case is mould for casting - Google Patents

Abstract

The utility model provides a die for casting a pump volute, and relates to the field of dies. This pump volute is mould for casting includes: the top of the lower die body is provided with a die groove; the bottom of the upper die body is provided with a bulge matched with the internal structure of the pump turbine, and when the upper die body is attached to the lower die body, the die cavity and the bulge form a casting die cavity of the pump volute; the lifting assembly is arranged on one side of the die, and the movable end of the lifting assembly is connected with the upper die body to drive the upper die body to be close to or far away from the lower die body; the pouring channel is arranged at the joint of the upper die body and the lower die body; the ejector pin is arranged in the lower die body and is level with the bottom of the die cavity when the ejector pin is in a contracted state; the auxiliary demoulding assembly is arranged in the bulge of the upper mould body, one side of the auxiliary demoulding assembly, which is contacted with the pump volute, is a plane of the pump volute, and the movable end of the auxiliary demoulding assembly is opposite to the movable direction of the ejector pin. The auxiliary demolding assembly is arranged to be matched with the upper mold body for demolding.

Description

Pump spiral case is mould for casting

Technical Field

The utility model relates to the technical field of dies, in particular to a die for casting a pump volute.

Background

Pumps are mechanical devices for transporting media and are widely used in various industries. The casing of the existing pump is made to be split in half, the sintered winding cavity liner casing is put into the split casing and clamped by the fastener. The pump housing of this type has a problem of inconvenience in demolding after the casting is completed due to the complicated structure of the housing.

Disclosure of Invention

The utility model aims to solve the problems and provides a die for casting a pump volute, which is matched with an upper die body to carry out die stripping by arranging an auxiliary die stripping assembly.

The technical scheme adopted by the utility model is as follows:

a mold for casting a pump volute, comprising:

the upper die body is provided with a die cavity at the top;

the bottom of the upper die body is provided with a bulge matched with the internal structure of the pump turbine, and when the upper die body is attached to the lower die body, the die cavity and the bulge form a casting die cavity of the pump volute;

the lifting assembly is arranged on one side of the die, and the movable end of the lifting assembly is connected with the upper die body to drive the upper die body to be close to or far away from the lower die body;

the pouring channel is arranged at the joint of the upper die body and the lower die body;

the ejector pin is arranged in the lower die body and is flush with the bottom of the die cavity when the ejector pin is in a contracted state;

the auxiliary demoulding assembly is arranged in the bulge of the upper mould body, one side, in contact with the pump volute, of the auxiliary demoulding assembly is a plane of the pump volute, and the movable end of the auxiliary demoulding assembly is opposite to the movable direction of the ejector pin.

Optionally, the upper die body includes:

a housing having a mounting chamber at a bottom thereof;

the molding die body is arranged in the mounting cavity, a mounting channel is arranged in the molding die body corresponding to a hole in the middle of the pump volute, and the bottom of the molding die body is matched with the internal structure of the pump volute;

the locating rod is arranged in the installation channel, and the other end of the locating rod penetrates through a through hole in the middle of the pump volute to be abutted with the bottom of the die groove of the lower die body.

Optionally, the lifting assembly includes:

the mounting plates are arranged on two opposite sides of the upper die body;

and the lifting driving mechanism is used for driving the upper die body to be close to or far away from the lower die body through the mounting plates.

Optionally, the lifting driving mechanism is an air cylinder, a hydraulic cylinder, a telescopic rod or a linear motor.

Optionally, the auxiliary demolding assembly includes:

the first telescopic piece is arranged in the shell, and the overhanging end of the first telescopic piece is abutted with the flange end face on the flow guide channel of the pump volute;

the second telescopic piece is arranged in the shell, is arranged on one side, far away from the diversion channel, of the cavity of the pump volute, and the movable end of the second telescopic piece is abutted with the flange end face of the cavity of the pump volute;

the first telescopic piece and the second telescopic piece are in a shrinkage state in the injection molding process, and after the pump volute is poured, the movable ends of the first telescopic piece and the second telescopic piece are abutted to the pump volute.

Compared with the prior art, the utility model has the beneficial effects that:

the auxiliary demoulding component arranged on the upper die body is matched with the ejector pin, so that the pump volute can be quickly separated from the die cavity.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the 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 schematic view showing the internal structure of the pump volute casting mold.

Fig. 2 is a schematic perspective view of a pump volute.

Fig. 3 is a schematic view of the structure of the pump volute casting mold at the time of demolding.

Reference numerals:

1. a lower die body; 11. a die cavity;

2. an upper die body; 21. a protrusion; 22. a housing; 23. forming a die body; 24. a positioning rod;

3. a lifting assembly; 31. a mounting plate; 32. a lifting driving mechanism;

4. a pouring channel;

5. a thimble;

61. a first telescopic member; 62. a second telescopic member;

7. a pump volute; 71. a hole; 72. and (3) a flange.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "Zhou Xiang, etc. refer to the orientation or positional relationship based on the drawings, or the orientation or positional relationship that the present product is conventionally put in, or the orientation or positional relationship that is conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features, either explicitly or implicitly. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above", "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, an embodiment of the present utility model provides a mold for casting a pump volute, including: the mold comprises a lower mold body 1, an upper mold body 2, a lifting assembly 3, a pouring channel 4, a thimble 5 and an auxiliary demolding assembly; the top of the lower die body 1 is provided with a die cavity 11.

The bottom of the upper die body 2 is provided with a bulge 21 matched with the internal structure of the pump turbine, and when the upper die body 2 is attached to the lower die body 1, the die cavity 11 and the bulge 21 form a casting die cavity of the pump volute 7. The lifting assembly 3 is arranged on one side of the die, and the movable end of the lifting assembly 3 is connected with the upper die body 2 to drive the upper die body 2 to be close to or far away from the lower die body 1. The pouring channel 4 is arranged at the joint of the upper die body 2 and the lower die body 1. The thimble 5 is arranged in the lower die body 1, and is level with the bottom of the die cavity 11 when the thimble 5 is in a contracted state. The auxiliary demoulding component is arranged in the bulge 21 of the upper mould body 2, one side of the auxiliary demoulding component, which is contacted with the pump volute 7, is a plane of the pump volute 7, and the movable end of the auxiliary demoulding component is opposite to the movable direction of the ejector pin 5.

The pouring of the pump volute 7 is completed through the pouring channel 4, the upper die body 2 is lifted through the lifting assembly 3 after the pouring is completed, and the poured pump volute 7 is positioned by the aid of the extending auxiliary demoulding assembly in the process of lifting the upper die body 2. After the upper die body 2 is lifted to the designated height, the auxiliary demoulding assembly is contracted and reset. At this time, the ejector pin 5 works to eject the cast pump volute 7 from the die cavity 11.

The auxiliary demoulding component is adopted to position the pump volute 7 in the ascending process of the upper die body 2, so that the pump volute 7 is prevented from being adsorbed at the bottom of the upper die body 2 in the ascending process, and the later removal is inconvenient. The ejector pin 5 in the lower die body 1 ejects the pump volute 7 out of the die cavity 11, so that an operator can conveniently take the pump volute.

In another embodiment, as shown in fig. 1, 2 and 3, the upper mold body 2 includes: a housing 22, a molded body 23 and a positioning rod 24; the bottom of the housing 22 has a mounting chamber. The forming die body 23 is arranged in the mounting cavity, a mounting channel is arranged on the forming die body 23 corresponding to the hole 71 in the middle of the pump volute 7, and the bottom of the forming die body 23 is matched with the internal structure of the pump volute 7. The locating rod 24 is installed in the installation channel, and the other end of the locating rod 24 passes through a through hole 71 in the middle of the pump volute 7 and is abutted against the bottom of the die groove 11 of the lower die body 1.

The casing 22 is mainly used for positioning, one side of the molded die body 23 facing the pump volute 7 is provided with a structure matched with the internal structure of the pump turbine, the setting position of the positioning rod 24 corresponds to the hole 71 in the middle of the pump volute 7, and meanwhile the positioning rod 24 can play a role in positioning. In use, the positioning rod 24 is connected with the forming die body 23, the forming die body 23 is mounted in the mounting chamber of the housing 22, and the positioning rod 24 is provided with an outline structure matched with the middle hole 71 of the pump volute 7, so that the forming die body 23 and the positioning rod 24 form a bulge 21 towards one side of the lower die body 1. When the upper die body 2 is contacted with the lower die body 1, the end part of the positioning rod 24 is abutted against the bottom of the die cavity 11, and in the casting process, casting material enters the die cavity 11 and the bulge 21 through the casting channel 4 and is filled, and after the casting material is cooled, the pump volute 7 is formed.

In another embodiment, as shown in fig. 1 and 3, the lifting assembly 3 includes: the upper die body 2 comprises a mounting plate 31 and two lifting driving mechanisms 32, wherein the mounting plate 31 is arranged on two opposite sides of the upper die body 2; the two mounting plates 31 are respectively and movably connected with the two lifting driving mechanisms 32, and the lifting driving mechanisms 32 drive the upper die body 2 to be close to or far away from the lower die body 1 through the mounting plates 31.

In this embodiment, the fixed end of the lifting driving mechanism 32 is provided with one end of the lower die body 1, and in order to conveniently drive the upper die body 2 away from or close to the lower die body 1 in use, mounting base plates are respectively provided on opposite sides of the upper die body 2, and the mounting base plates are connected with the movable end of the lifting driving mechanism 32. The upper die body 2 is attached to the lower die body 1 by moving upward at the movable end of the lifting drive mechanism 32. In this embodiment, the lifting driving mechanism 32 is a cylinder, a hydraulic cylinder, a telescopic rod, or a linear motor. Wherein the most preferred is a cylinder.

In another embodiment, as shown in fig. 1 and 3, a fixed end of the lifting driving mechanism 32 is installed at the top of the upper die body 2, and a movable end of the lifting driving mechanism 32 extends outwards to drive the upper die body 2 to be attached to the lower die body 1. The movable end of the lifting driving mechanism 32 contracts to drive the upper die body 2 to be far away from the lower die body 1.

In another embodiment, as shown in fig. 1, 2 and 3, the auxiliary stripper assembly comprises: a first telescopic member 61 and a second telescopic member 62; the first telescopic member 61 is installed in the housing 22, and the overhanging end of the first telescopic member 61 is abutted against the end face of the flange 72 on the diversion channel of the pump volute 7. The second telescopic member 62 is installed in the housing 22, the second telescopic member 62 is arranged on one side of the cavity of the pump volute 7 away from the diversion channel, and the movable end of the second telescopic member 62 is abutted with the end face of the flange 72 at the cavity of the pump volute 7. The first telescopic member 61 and the second telescopic member 62 are in a contracted state in the injection molding process, and after the pump volute 7 finishes casting, the movable ends of the first telescopic member 61 and the second telescopic member 62 are abutted against the pump volute 7.

The flange 72 of the air flow channel of the pump turbine is provided with the first telescopic piece 61, one side far away from the air flow channel is provided with the second telescopic piece 62, and the pump volute 7 is positioned through the two telescopic pieces when demoulding, so that the pump volute 7 is prevented from being adsorbed at the bottom of the upper die body 2. The two telescopic parts are hydraulic telescopic rods, air cylinders and hydraulic cylinders. Wherein the most preferred is a hydraulic telescoping rod.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. A mold for casting a pump volute, comprising:

the top of the lower die body is provided with a die cavity matched with the outline structure of the pump volute;

the bottom of the upper die body is provided with a bulge matched with the internal structure of the pump turbine, and when the upper die body is attached to the lower die body, the die cavity and the bulge form a casting die cavity of the pump volute;

the lifting assembly is arranged on one side of the die, and the movable end of the lifting assembly is connected with the upper die body to drive the upper die body to be close to or far away from the lower die body;

the pouring channel is arranged at the joint of the upper die body and the lower die body;

the ejector pin is arranged in the lower die body and is flush with the bottom of the die cavity when the ejector pin is in a contracted state;

the auxiliary demoulding assembly is arranged in the bulge of the upper mould body, one side, in contact with the pump volute, of the auxiliary demoulding assembly is a plane of the pump volute, and the movable end of the auxiliary demoulding assembly is opposite to the movable direction of the ejector pin.

2. The pump volute casting mold of claim 1, wherein the upper mold body comprises:

a housing having a mounting chamber at a bottom thereof;

the molding die body is arranged in the mounting cavity, a mounting channel is arranged in the molding die body corresponding to a hole in the middle of the pump volute, and the bottom of the molding die body is matched with the internal structure of the pump volute;

the locating rod is arranged in the installation channel, and the other end of the locating rod penetrates through a through hole in the middle of the pump volute to be abutted with the bottom of the die groove of the lower die body.

3. The pump volute casting mold of claim 1, wherein the lift assembly comprises:

the mounting plates are arranged on two opposite sides of the upper die body;

and the lifting driving mechanism is used for driving the upper die body to be close to or far away from the lower die body through the mounting plates.

4. A pump volute casting mold according to claim 3, wherein the elevation drive mechanism is a cylinder, a hydraulic cylinder, a telescopic rod, or a linear motor.

5. The pump volute casting mold of claim 2, wherein the auxiliary stripper assembly comprises:

the first telescopic piece is arranged in the shell, and the overhanging end of the first telescopic piece is abutted with the flange end face on the flow guide channel of the pump volute;

the second telescopic piece is arranged in the shell, is arranged on one side, far away from the diversion channel, of the cavity of the pump volute, and the movable end of the second telescopic piece is abutted with the flange end face of the cavity of the pump volute;

the first telescopic piece and the second telescopic piece are in a shrinkage state in the injection molding process, and after the pump volute is poured, the movable ends of the first telescopic piece and the second telescopic piece are abutted to the pump volute.