Investment casting structure for water outlet nozzle of coffee machine

Abstract

The utility model discloses an investment casting structure for a water outlet nozzle of a coffee machine. The investment casting structure comprises a lower half wax mold and an upper half wax mold combined with the lower half wax mold, a plurality of protruding positioning pieces are arranged at the bottom of the upper half wax mold, and correspondingly, pits matched with the protruding positioning pieces are formed in the lower half wax mold; the contact surfaces of the upper half wax mould and the lower half wax mould are coated with bonding layers which are used for bonding the upper half wax mould and the lower half wax mould when the upper half wax mould and the lower half wax mould are butted; the lower half wax mould comprises a semispherical wax mould body and an arc-shaped wax mould body which is integrally formed with the semispherical wax mould body, and the semispherical wax mould body is communicated with the middle part of the arc-shaped wax mould body. According to the utility model, by adopting the split and combined wax mould design, the cost for manufacturing parts with complex shapes can be obviously reduced, the method avoids the use of expensive metal moulds, simplifies the production flow, permits the rapid manufacturing and combination of wax moulds, improves the production efficiency, and shortens the production cycle due to the reduction of the production steps.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to an investment casting structure of a water spout of a coffee machine. Background Art

[0002] Investment casting is also called lost wax casting, which includes the processes of pressing wax, trimming wax, forming trees, dipping slurry, melting wax, pouring molten metal and post-processing. Lost wax casting is to use wax to make a wax mold of the part to be cast, and then apply mud on the wax mold, which is the mud mold. After the mud mold is dried, put it into hot water to melt the wax mold inside. Take out the mud mold with melted wax mold and bake it into a ceramic mold. Once baked. Generally, a pouring port is left when making the mud mold, and then the molten metal is poured from the pouring port. After cooling, the required parts are made.

[0003] In the traditional investment casting process, the production of complex-shaped metal parts, such as the water spout of a coffee machine, faces many challenges. Due to the complex structure of the water spout, there are many limitations in using traditional metal molds to form wax molds at one time, which not only increases the manufacturing cost, but also makes it difficult to ensure the quality and precision of the castings. For example, a certain type of coffee machine water spout is a key accessory on a certain type of coffee machine. It is made of food-grade 304 stainless steel and weighs only 21 grams. It needs to be produced by investment casting, and the surface needs to be mechanically polished to achieve a mirror effect. To produce this part by investment casting, it is necessary to first make a wax mold product of the part. Due to the complex shape of the part, the wax mold of the part cannot be made at one time with a metal mold. According to the production characteristics of the investment casting wax mold, the wax mold can only be decomposed and combined, and the upper and lower halves of the mold are bonded to form a required wax mold product. In this way, the purpose of qualified quality and optimal cost can be achieved. This technology is therefore developed. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a coffee machine water spout investment casting structure. The utility model needs to adopt a decomposition and assembly method to manufacture a wax mold, and the wax mold is designed to be divided into multiple separable parts, such as an upper and lower halves, which are combined into a complete wax mold through a special positioning and bonding mechanism.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides a coffee machine water spout investment casting structure, comprising: a lower wax mold, an upper wax mold combined with the lower wax mold;

[0007] The bottom of the upper wax mold is provided with a plurality of protruding positioning pieces, and correspondingly, the lower wax mold is provided with concave pits adapted to the plurality of protruding positioning pieces;

[0008] The contact surfaces of the upper wax model and the lower wax model are coated with an adhesive layer for bonding the upper wax model and the lower wax model when they are butt-jointed;

[0009] The lower wax model comprises a hemispherical wax model body and an arc-shaped wax model body integrally formed with the hemispherical wax model body, and the hemispherical wax model body is connected to the middle part of the arc-shaped wax model body.

[0010] Preferably, a groove channel is provided at the bottom of the hemispherical wax model body, and correspondingly, an arc-shaped flow channel is provided on the arc-shaped wax model body; the groove channel is connected to the middle of the arc-shaped flow channel.

[0011] Preferably, the plurality of protruding positioning members are configured as three protruding hemispheres, and the three protruding hemispheres are disposed at the bottom of the upper wax mold and are in a triangular structure.

[0012] Preferably, the pits formed on the lower wax mold are three hemispherical pits for accommodating the corresponding three protruding hemispheres.

[0013] Preferably, the adhesive layer is set as a glue layer.

[0014] Preferably, the upper wax mold is connected to the hemispherical wax mold body, and the upper wax mold is set to be cylindrical.

[0015] The technical solution of the utility model has the following beneficial effects:

[0016] The utility model can significantly reduce the cost of manufacturing parts with complex shapes by adopting a decomposed and combined wax mold design. This method avoids the use of expensive metal molds and simplifies the production process, allowing for rapid manufacturing and assembly of wax molds, thereby improving production efficiency. In addition, since the production steps are reduced, the production cycle is shortened. Due to the improved production efficiency and reduced costs, the new solution is easier to achieve mass production and is suitable for large-scale production needs.

[0017] The utility model ensures that the upper and lower parts of the wax mold can be accurately butted together through precise positioning structure and bonding technology, thereby improving the dimensional accuracy and surface quality of the final casting and providing a new solution for the manufacture of complex parts.

[0018] The utility model provides greater design flexibility and can manufacture parts with more complex and delicate shapes to meet diverse market demands. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is an exploded view of the structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the upper wax mold structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the lower half wax mold structure of the utility model. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] Reference Figures 1 to 4 The utility model provides a coffee machine water spout investment casting structure, comprising: a lower wax mold 2, an upper wax mold 1 combined with the lower wax mold 2;

[0029] A plurality of protruding positioning members 3 are provided at the bottom of the upper wax mold 1, and correspondingly, a plurality of concave pits 4 adapted to the plurality of protruding positioning members 3 are provided on the lower wax mold 3. The positioning cooperation between the plurality of protruding positioning members 3 and the concave pits 4 ensures that the upper and lower parts of the wax mold can be accurately aligned when combined, thereby improving the accuracy of the casting; the plurality of protruding positioning members are configured as three protruding hemispheres, and the three protruding hemispheres are arranged at the bottom of the upper wax mold and are in a triangular structure. The triangular structure makes it more stable when positioned, thereby improving the accuracy of the casting; the concave pits provided on the lower wax mold are three hemispherical pits, which are used to place the corresponding three protruding hemispheres.

[0030] The contact surfaces of the upper wax mold 1 and the lower wax mold 2 are coated with an adhesive layer, which is used to bond the upper wax mold 1 and the lower wax mold 2 when they are connected; the upper and lower parts of the wax mold are firmly bonded together to form a complete wax mold, providing a stable model for the subsequent casting process. The adhesive layer is set as a glue layer, which can be applied to the contact surface of the upper wax mold 1 and the lower wax mold 2 alone, or the contact surface of the upper wax mold 1 and the lower wax mold 2 can be coated with a glue layer. The use of the glue layer ensures the stability and integrity of the wax mold, which is crucial for the subsequent investment casting process.

[0031] Further, the lower wax mold 2 includes a hemispherical wax mold body 201 and an arc-shaped wax mold body 202 integrally formed with the hemispherical wax mold body 201, the hemispherical wax mold body 201 is connected to the middle of the arc-shaped wax mold body 202, a groove channel 201a is provided at the bottom of the hemispherical wax mold body 201, and correspondingly, an arc-shaped flow channel 202a is provided on the arc-shaped wax mold body 202; the groove channel 201a is connected to the middle of the arc-shaped flow channel 202a, and the groove channel 201a is connected to the middle of the arc-shaped flow channel 202a, so as to ensure that the molten metal can smoothly flow from the pouring system into each part of the wax mold, thereby reducing the risk of casting defects. The upper wax mold 1 is docked with the hemispherical wax mold body 201, and the upper wax mold 201 is set to be cylindrical.

[0032] Working principle of this utility model:

[0033] The upper wax mold 1 is designed with three protruding hemispheres at the parting point, and the lower wax mold 2 is also designed with three hemispherical pits at the parting point, which cooperate with the three protruding hemispheres of the upper wax mold 1 for positioning; when assembling the wax molds, evenly apply bonding glue on the parting surface of the lower wax mold 2, and then press and bond the upper wax mold 2 according to the positioning to form a complete wax mold of the water outlet.

[0034] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A coffee machine water spout investment casting structure, characterized in that: include: A lower wax model and an upper wax model combined with the lower wax model; The bottom of the upper wax mold is provided with a plurality of protruding positioning pieces, and correspondingly, the lower wax mold is provided with concave pits adapted to the plurality of protruding positioning pieces; The contact surfaces of the upper wax model and the lower wax model are coated with an adhesive layer for bonding the upper wax model and the lower wax model when they are butt-jointed; The lower wax model comprises a hemispherical wax model body and an arc-shaped wax model body integrally formed with the hemispherical wax model body, and the hemispherical wax model body is connected to the middle part of the arc-shaped wax model body.

2. The investment casting structure of the coffee machine water spout according to claim 1, characterized in that: A groove channel is provided at the bottom of the hemispherical wax model body, and correspondingly, an arc-shaped flow channel is provided on the arc-shaped wax model body; the groove channel is connected to the middle of the arc-shaped flow channel.

3. The investment casting structure of the coffee machine water spout according to claim 1, characterized in that: The plurality of protruding positioning members are configured as three protruding hemispheres, which are arranged at the bottom of the upper wax mold and are in a triangular structure.

4. The investment casting structure of the water spout of a coffee machine according to claim 3, characterized in that: The pits formed on the lower wax model are three hemispherical pits for accommodating the corresponding three protruding hemispheres.

5. The investment casting structure of the coffee machine water spout according to claim 1, characterized in that: The adhesive layer is set as a glue layer.

6. The investment casting structure of the coffee machine water spout according to claim 2, characterized in that: The upper wax mold is connected to the hemispherical wax mold body, and the upper wax mold is set to be cylindrical.

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