Pump body evanescent mode mold

Abstract

The utility model discloses an evanescent mode mould for a pump body. The evanescent mode mould comprises an upper mould, a lower mould and a sliding block, the lower die comprises a first shell, a first boss and a second boss are arranged at the two ends of the upper surface of the first shell in the first direction respectively, a first cavity protrusion is arranged on the upper surface of the first shell, and second cavity protrusions are symmetrically arranged on the two sides of the first cavity protrusion. The sliding blocks comprise the first sliding block and the second sliding block, the first sliding block and the second sliding block are correspondingly matched with the boss on the lower die body, and the inner side wall of the first sliding block is provided with a first plugging block and a second plugging block which are matched with the first cavity protrusion and the second cavity protrusion respectively. The upper die and the lower die form a pump body cavity, the lower surface of the second shell is provided with a first notch and a second notch which are correspondingly matched with the first plugging block and the second plugging block respectively, and the upper surface of the second shell is provided with a material injection port; the pump body is simple in structure, convenient to install and use and low in cost, and the production efficiency of the pump body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump body processing, in particular to a pump body lost foam mold. Background Art

[0002] The pump body is the main component of the pump composed of an inlet pipe, an outlet pipe, etc. It is the supporting and fixing element of the pump, and is mainly responsible for supporting the hydraulic mechanism and bearing the effects of the pipeline and the internal liquid pressure of the pump. At present, the production of pump bodies mostly uses lost foam molds to cast the pump bodies. Lost foam casting (also known as full-mold casting) is a full-mold made of foam plastic (EPS, STMMA or EPMMA) polymer material, which is exactly the same as the structure and size of the part to be cast. After being dipped in refractory coating and dried, it is buried in dry quartz sand and subjected to three-dimensional vibration molding. The molten metal liquid is poured into the casting sand box under negative pressure, so that the polymer material model is heated and vaporized and extracted, and then replaced by liquid metal after cooling and solidification to form a one-time molding new casting process. A new casting method for producing castings.

[0003] The existing pump body lost foam mold uses a positioning device to position the first mold and the second mold in the mold, and a demoulding component to close or split the first mold and the second mold in the mold, so as to achieve positioning and subsequent demoulding in the pump body lost foam production, so as to avoid shaking of the mold during use and prevent leakage caused by accidental movement, thereby reducing the production quality of the finished product. However, this has high requirements on the specification structure of the mold, which increases the production cost and reduces the production efficiency of the pump body to a certain extent. Utility Model Content

[0004] The utility model aims to provide a pump body lost foam mold to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model is implemented by the following technical means:

[0006] A pump body lost foam mold, comprising an upper mold, a lower mold, and a slider; wherein:

[0007] The lower mold comprises a first shell, the first shell has two ends on its upper surface respectively provided with a first boss and a second boss along a first direction, the first shell has an upper surface provided with a first cavity protrusion, and the first cavity protrusion is symmetrically provided with second cavity protrusions on both sides;

[0008] The slider comprises a first slider and a second slider, the first slider and the second slider respectively cooperate with the upper boss of the lower die, and the inner side wall of the first slider is provided with a first blocking block and a second blocking block respectively cooperate with the first cavity protrusion and the second cavity protrusion;

[0009] The upper mold includes a second shell, the lower surface of the second shell includes a cavity groove that cooperates with the first cavity protrusion and the second cavity protrusion to form a cavity space, the lower surface of the second shell is provided with a first notch and a second notch that correspond to the first blocking block and the second blocking block respectively, and the upper surface of the second shell is provided with an injection port that passes through the cavity groove and communicates with the cavity space.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model has a simple structure, is easy to install and use, improves the production efficiency of the pump body, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the product structure in the embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the top view of the product structure in the embodiment of the utility model;

[0014] Figure 3 In the embodiment of the utility model, Figure 2 Schematic diagram of the cross-sectional structure of the AA line;

[0015] Figure 4 This is a schematic diagram of the structure of a part of the product in the embodiment of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of a part of the product in the embodiment of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of a part of the product in the embodiment of the utility model;

[0018] Figure 7 This is a schematic diagram of the structure of a part of the product in the embodiment of the utility model;

[0019] Figure 8 It is a partial structural schematic diagram of the product in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] The following is a detailed description of the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments and drawings are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. The accompanying drawings only schematically show the parts related to the technical solution of the present application, and they do not represent the actual structure of the product.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0022] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0026] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0027] The pump body is the main component of the pump composed of an inlet pipe, an outlet pipe, etc. It is the supporting and fixing element of the pump, and is mainly responsible for supporting the hydraulic mechanism and bearing the effects of the pipeline and the internal liquid pressure of the pump. At present, the production of pump bodies mostly uses lost foam molds to cast the pump bodies. Lost foam casting (also known as full-mold casting) is a full-mold made of foam plastic (EPS, STMMA or EPMMA) polymer material, which is exactly the same as the structure and size of the part to be cast. After being dipped in refractory coating and dried, it is buried in dry quartz sand and subjected to three-dimensional vibration molding. The molten metal liquid is poured into the casting sand box under negative pressure, so that the polymer material model is heated and vaporized and extracted, and then replaced by liquid metal after cooling and solidification to form a one-time molding new casting process. A new casting method for producing castings.

[0028] The existing pump body lost foam mold uses a positioning device to position the first mold and the second mold in the mold, and a demoulding component to close or split the first mold and the second mold in the mold, so as to achieve positioning and subsequent demoulding in the pump body lost foam production, so as to avoid shaking of the mold during use and prevent leakage caused by accidental movement, thereby reducing the production quality of the finished product. However, this has high requirements on the specification structure of the mold, which increases the production cost and reduces the production efficiency of the pump body to a certain extent.

[0029] In this embodiment, a pump body lost foam mold includes an upper mold 1, a lower mold 2, and a slider 3; wherein,

[0030] The lower mold 2 includes a first shell 21, and the first shell 21 has two ends provided with a first boss 22 and a second boss 23 along a first direction, and the first shell 21 has a first cavity protrusion 24 provided on the upper surface, and the second cavity protrusion 25 is symmetrically provided on both sides of the first cavity protrusion 24;

[0031] The slider 3 includes a first slider 31 and a second slider 32. The first slider 31 and the second slider 32 are respectively matched with the upper boss of the lower mold 2. The inner side wall of the first slider 31 is provided with a first blocking block 33 and a second blocking block 34 respectively matched with the first cavity protrusion 24 and the second cavity protrusion 25;

[0032] The upper mold 1 includes a second shell body 11, the lower surface of the second shell body 11 includes a cavity groove 12 which cooperates with the first cavity protrusion 24 and the second cavity protrusion 25 to form a cavity space, the lower surface of the second shell body 11 is provided with a first notch 13 and a second notch 14 which correspond to the first blocking block 33 and the second blocking block 34 respectively, and the upper surface of the second shell body 11 is provided with a filling port 15 which passes through the cavity groove 12 and communicates with the cavity space; the utility model has a simple structure, is easy to install and use, improves the production efficiency of the pump body, and has low cost.

[0033] The first direction described in the present invention is along the horizontal length direction of the mold, that is, the X direction in the figure, the second direction is along the width direction of the mold, that is, the Y direction in the figure, and the third direction is along the height direction of the mold, that is, the Z direction in the figure.

[0034] In a possible embodiment of the present utility model, the lower mold 2 includes a first shell 21, wherein the first shell 21 and the first boss 22, the second boss 23, the first cavity protrusion 24, and the second cavity protrusion 25 are integrally formed with a shell-drawing design. In order to improve the rigidity of the lower mold 2, a plurality of groups of integrally formed reinforcing plates are provided on the bottom surface of the cavity of the lower mold 2, and in order to reduce the weight of the entire mold, the lower mold 2 is provided with a corresponding weight reduction notch (not marked in the figure) at the adapting position;

[0035] In a possible embodiment of the present invention, the relative inner side surfaces of the first boss 22 and the second boss 23 are both inclined surfaces, which are convenient for respectively cooperating with the first slider 31 and the second slider 32 to facilitate the first slider 31 and the second slider 32 to be pulled out.

[0036] In a possible embodiment of the utility model, a first cavity protrusion 24 is provided on the upper surface of the first shell 21, and second cavity protrusions 25 are symmetrically provided on both sides of the first cavity protrusion 24; wherein the first cavity protrusion 24 includes a first semicircular ring portion 241, a second notch portion 242, and a third hollow convex portion 243 which are matched in sequence, and the second cavity protrusions 25 are connected to the second notch portion 242 on both sides according to the connecting piece 244, and the second cavity protrusion 25 ... 25 is connected to the second notch portion 242 on both sides according to the connecting piece 244, and the second cavity protrusion 25 includes a first semicircular The first semicircular portion 251 is connected to the second semicircular portion 251, and the second raised sealing plate 252 respectively cooperates with the first semicircular portion 251, and the second semicircular portion 253 whose diameter is smaller than the first semicircular portion 241. In one embodiment of the utility model, the outer side surface of the third hollow convex portion is located in front of the outer side surface of the second semicircular portion 253. In this embodiment, the third hollow convex portion 243 is a structural member with a convex cavity, and is integrally formed with the second notch portion 242 and the first semicircular portion 241 to form a first cavity protrusion 24.

[0037] In a possible embodiment of the present invention, the upper surface of the first shell 21 is provided with symmetrical weight-reducing openings 2101 on both sides of the first cavity protrusion 24 to reduce the weight of the mold.

[0038] In a possible embodiment of the present invention, the first sliding block 31 includes a first plate 311 arranged horizontally, the rear side end of the first plate 311 is matched and connected with a vertical plate 312 arranged vertically downward, the bottom of the vertical plate 312 is matched and connected with a second plate 313 parallel to the first plate 311, the lower surface of the first plate 311 is provided with a plurality of groups of evenly arranged limiting plates 314 and the other end of which is connected to the second plate 313, the limiting plate 314 is provided with a limiting opening 315 matched with the inner side surface relative to the first boss 22, and the outer side surface relative to the vertical plate 312 is provided There are a first blocking block 33 and a second blocking block 34 that cooperate with the first cavity protrusion 24 and the second cavity protrusion 25. Combined with the accompanying drawings, the first blocking block 33 and the second blocking block 34 are surrounded by a cavity groove 12 for configuration, and for ease of implementation, a vertical plate 312 is formed in cooperation with the first cavity protrusion 24 and the second cavity protrusion 25. In the utility model, the structure included in the first slider 31 is integrally formed and weight is reduced by corresponding weight-reducing surfaces. Corresponding reinforcing ribs or fillets are arranged on the inner side of the cooperation point, which belongs to the conventional design in industrial product design and will not be described in the utility model.

[0039] In a possible embodiment of the present invention, referring to the attached drawings, a structural diagram of a second slider 32 is also disclosed. The second slider 32 is similar in structure to the first slider 31, but different in size and thickness. It mainly has an inclined structure that cooperates with the second boss 23, and a cavity slide groove that is provided on the inner side for forming and cooperating with the cavity. The structure of the second slider 32 is no longer described in detail in the present invention. Combined with the above-mentioned implementation content of the present invention, in the specific application process of the present invention, the lower mold 2, the first slider 31, the second slider 32, and the upper mold 1 are matched to form a casting pump body vanishing model cavity, and the upper mold 1 is fed to feed the material. After the material is completed, the upper mold 1, the first slider 31, and the second slider 32 are lifted, and finally the pump body lost mold is removed. The utility model has a simple structure, is easy to install and use, improves the production efficiency of the pump body, and has low cost; the specific embodiments disclosed in the utility model fall within the protection scope of the claims of the utility model, and are the specific lower implementation scope of the characteristic part of the utility model. The protection content of the specific embodiment is only an explanation of the protection scope of the claims of the utility model. The protection scope of the utility model is not limited to the protection content of the specific embodiment, and the protection content of the specific embodiment should not be understood as a limitation on the protection scope of the claims of the utility model.

Claims

1. A pump body lost foam mold, characterized in that: It comprises an upper die (1), a lower die (2) and a slider (3); wherein: The lower mold (2) comprises a first shell (21), a first boss (22) and a second boss (23) are respectively arranged along a first direction at two ends of the upper surface of the first shell (21), a first cavity protrusion (24) is arranged on the upper surface of the first shell (21), and second cavity protrusions (25) are symmetrically arranged on both sides of the first cavity protrusion (24); The slider (3) comprises a first slider (31) and a second slider (32), wherein the first slider (31) and the second slider (32) respectively cooperate with the upper boss of the lower mold (2), and the inner side wall of the first slider (31) is provided with a first blocking block (33) and a second blocking block (34) respectively cooperate with the first cavity protrusion (24) and the second cavity protrusion (25); The upper mold (1) includes a second shell (11), the lower surface of the second shell (11) includes a cavity groove (12) that cooperates with the first cavity protrusion (24) and the second cavity protrusion (25) to form a cavity space, the lower surface of the second shell (11) is provided with a first notch (13) and a second notch (14) that correspond to the first blocking block (33) and the second blocking block (34) respectively, and the upper surface of the second shell (11) is provided with an injection port (15) that passes through the cavity groove (12) and communicates with the cavity space.

2. A pump body lost foam mold according to claim 1, characterized in that: The lower mold (2) comprises a first shell (21), wherein the first shell (21) is integrally formed with a first boss (22), a second boss (23), a first cavity protrusion (24), and a second cavity protrusion (25) to form a shell-drawing design.

3. The pump body lost foam mold according to claim 1, characterized in that: The relative inner side surfaces of the first boss (22) and the second boss (23) are both inclined surfaces.

4. The pump body lost foam mold according to claim 1, characterized in that: The first cavity protrusion (24) includes a first semicircular ring portion (241), a second notch portion (242), and a third hollow convex portion (243) which are matched in sequence; the second notch portion (242) is connected to the second cavity protrusion (25) on both sides according to the connecting piece (244); the second cavity protrusion (25) includes a first semicircular ring portion (251) which is matched with the connecting piece (244), a second protruding sealing plate (252) which is matched with the first semicircular ring portion (251), and a second semicircular ring portion (253) which has a diameter smaller than the first semicircular ring portion (241).

5. A pump body lost foam mold according to claim 4, characterized in that: The outer side surface of the third hollow convex portion (243) is located in front of the outer side surface of the second semicircular ring portion (253). The third hollow convex portion (243) is a structural member having a convex cavity, and is integrally formed with the second notch portion (242) and the first semicircular ring portion (241) to form a first cavity protrusion (24).

6. The pump body lost foam mold according to claim 1, characterized in that: The upper surface of the first shell (21) is provided with symmetrical weight-reducing openings (2101) on both sides of the first cavity protrusion (24).

7. The pump body lost foam mold according to claim 1, characterized in that: The first sliding block (31) includes a first plate (311) arranged horizontally, the rear side end of the first plate (311) is connected with a vertical plate (312) arranged vertically downward, the bottom of the vertical plate (312) is connected with a second plate (313) parallel to the first plate (311), the lower surface of the first plate (311) is provided with a plurality of groups of evenly arranged limiting plates (314) and the other end of which is connected to the second plate (313), the limiting plate (314) is provided with a limiting opening (315) which cooperates with the relative inner side surface of the first boss (22), and the relative outer side surface of the vertical plate (312) is provided with a first blocking block (33) and a second blocking block (34) which cooperate with the first cavity protrusion (24) and the second cavity protrusion (25).

Images