A modular ladle mold for investment casting

Abstract

The utility model discloses a modularized pouring rod mold for investment casting, designs upper die and lower die, and sets up mounting groove on the upper die and the lower die respectively, can set up the insert with different length through the mounting groove, can form the cavity with different length with the pouring head part, to satisfy the need of different length pouring rod, and the insert can be assembled quickly through the design of lug and counterbore hole adaptation, and the dismounting is convenient, can satisfy the pouring of different needs, and the cost is lower. On the other hand, the utility model discloses a modularized pouring rod mold for investment casting, is provided with sealing groove in handle groove, can realize sealing through the sealing block in sealing groove after pouring rod handle is put in and relies on the compression characteristic of rubber itself, prevents the wax from running in the process of wax injection.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology, and more specifically, to a modular casting mold for investment casting. Background Technology

[0002] Investment casting typically involves creating a pattern using an investment material (low-melting-point material such as wax) and combining it with a casting rod to form a mold. Several layers of refractory material are then applied to the surface of the mold. After hardening, drying, and solidification, the mold is heated to melt out the molding material, forming a hollow shell. After high-temperature sintering, molten metal is poured in, and the casting is cleaned to obtain the casting. The manufacture of the casting rod and wax pattern is an indispensable step.

[0003] In actual production, many casting girders, during the casting process design, use girders with the same cross-sectional area (100) and are hung via handles (200). The specific structure is as follows: Figure 5 As shown, different lengths of gating rods need to be designed according to different gating distances.

[0004] Currently, molds need to be designed and manufactured separately for different lengths of pouring rods. Moreover, many parts are used in small quantities, resulting in a wide variety of pouring rod molds and relatively high costs. In addition, the pouring rod handle 200 is prone to wax leakage during the mold closing process due to sealing issues.

[0005] Therefore, it is necessary to propose a modular casting mold for investment casting, which is of great significance for improving casting quality and reducing casting costs. Utility Model Content

[0006] This invention provides a modular casting mold for investment casting, which solves the problems of high cost and easy wax run-out affecting the quality of casting for parts with the same cross-section but different lengths.

[0007] According to one aspect of this utility model, a modular investment casting mold is provided, suitable for casting sprues with the same cross-section but different lengths. The modular investment casting mold includes an upper mold and a lower mold, and forming cavities are provided in the upper mold and the lower mold. When the upper mold and the lower mold are combined with the forming cavity, a cavity adapted to the shape of the casting sprue is formed. The forming cavity includes a wax injection head communicating with a handle groove and a tail with the same cross-section. The wax injection head is connected to the tail. An installation groove communicating with the tail is provided on the lower mold. Countersunk holes are provided on both sides of the installation groove. An insert is detachably installed in the installation groove. Lugs adapted to the countersunk holes are provided on both sides of the insert. The end of the insert abuts against the tail, and a wax injection groove with the same cross-section as the tail is provided on the insert.

[0008] Preferably, based on the above scheme, there are multiple inserts, and the length of the wax injection groove on each insert is different.

[0009] Based on the above scheme, a preferred embodiment is provided on the lug, and the locking screw passes through the countersunk hole to lock it in place.

[0010] Based on the above scheme, preferably, the handle groove on the upper mold and the handle groove on the lower mold form a mating hole.

[0011] Preferably, based on the above scheme, a sealing groove is provided in the middle of the handle groove, and the width of the sealing groove is greater than the width of the handle groove.

[0012] Based on the above scheme, preferably, an arc-shaped sealing block is provided in the sealing groove, and the sealing block on the upper mold and the sealing block on the lower mold are combined to form a sealing ring.

[0013] Preferably, based on the above scheme, the sealing block is a rubber block.

[0014] Based on the above scheme, preferably, a positioning hole is provided at the bottom of the mounting groove, and a pin is provided on the bottom surface of the insert that is adapted to the mounting groove, and the pin is adapted to the positioning hole.

[0015] This utility model discloses a modular casting mold for investment casting. It is designed with an upper mold and a lower mold, and installation grooves are set on the upper mold and the lower mold respectively. Inserts of different lengths can be installed through the installation grooves, which can form cavities of different lengths with the casting head to meet different casting needs. The inserts can be quickly assembled and disassembled through the design of lugs and countersunk holes, which can meet different casting needs and reduce costs.

[0016] On the other hand, the modular casting mold for investment casting of this utility model has a sealing groove in the handle groove. The sealing block in the sealing groove can achieve a seal by relying on the compression properties of the rubber itself after the casting handle is put in, thus preventing wax from running out during the wax injection process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram showing the open state of the modular gating mold for investment casting according to this utility model;

[0019] Figure 2 This is an exploded view of the modular gating mold for investment casting according to this utility model.

[0020] Figure 3 This is a perspective view of the insert of this utility model;

[0021] Figure 4 This is a structural diagram of the insert of this utility model;

[0022] Figure 5 This is a perspective view of the casting rod of this utility model;

[0023] Explanation of icon numbers:

[0024] 1. Upper mold; 2. Lower mold; 3. Molding cavity;

[0025] 10. Handle groove; 11. Wax injection head; 12. Tail end; 13. Mounting groove; 14. Countersunk hole; 15. Sealing groove; 16. Sealing block; 17. Positioning hole;

[0026] 4. Inlay; 41. Lug; 42. Wax injection groove; 43. Pin;

[0027] 100, pouring rod; 200, handle. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0030] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0035] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, the present invention provides a modular casting mold for investment casting, which is suitable for casting casting rods 100 with the same cross-section but different lengths. The modular casting mold for investment casting includes an upper mold 1 and a lower mold 2, wherein the upper mold 1 and the lower mold 2 are provided with a forming cavity 3. When the upper mold 1 and the lower mold 2 are combined with the forming cavity 3, a cavity adapted to the shape of the casting rod 100 is formed.

[0036] Specifically, the molding cavity 3 of this utility model includes a wax injection head 11 connected to the handle groove 10 and a tail 12 with the same cross-section, wherein the wax injection head 11 and the tail 12 are connected. The handle groove 10 is adapted to the handle 200.

[0037] Both the lower mold 2 and the lower mold 2 are provided with mounting grooves 13 that communicate with the tail 12. The mounting groove 13 is provided with countersunk holes 14 on both sides. The mounting groove 13 is detachably equipped with inserts 4. The inserts 4 are provided with lugs 41 on both sides that are adapted to the countersunk holes 14 to facilitate their quick installation.

[0038] The end of the insert 4 abuts against the tail 12, and a wax injection groove 42 with the same cross-section as the tail 12 is provided on the insert 4. The length of the wax injection groove 42 in different inserts 4 is different. For details, please refer to [link / reference]. Figure 3 and Figure 4 As shown.

[0039] Therefore, when it is necessary to make different lengths of casting rods 100, different inserts 4 can be installed into the mounting groove 13 by replacing them, so that different molding cavities 3 can be formed in the upper mold 1 and the lower mold 2. The molding cavity 3 is formed by the wax injection head 11, tail 12 and wax injection groove 42 connected together.

[0040] During wax injection, different inserts 4 can be selected according to different lengths of casting rods 100. Through the design of countersunk holes 14 and lugs 41, they can be quickly installed and positioned to form different molding cavities 3. The wax material injected into the molding cavity 3 through the wax injection hole can form casting rods of different lengths.

[0041] It is worth noting that this utility model has multiple inserts 4, and the wax injection grooves 42 on each insert 4 are of different lengths, making it easy to replace them to adapt to different needs.

[0042] Specifically, this utility model has a locking screw installed on the lug 41, which is inserted into the countersunk hole 14 for locking.

[0043] In this invention, the handle groove 10 on the upper mold 1 and the handle groove 10 on the lower mold 2 form a mating hole for cooperation with the handle 200 of the casting system. A sealing groove 15 is provided in the middle of the handle groove 10, and the width of the sealing groove 15 is greater than the width of the handle groove 10. An arc-shaped sealing block 16 is provided in the sealing groove 15. The sealing block 16 on the upper mold 1 and the sealing block 16 on the lower mold 2 combine to form a sealing ring. During casting, the sealing blocks 16, after being spliced ​​together, form an O-ring, which can effectively prevent wax from overflowing and prevent wax leakage during the wax injection process. Preferably, the sealing block 16 is a rubber block.

[0044] Please continue reading. Figure 3 As shown, the present invention provides a positioning hole 17 at the bottom of the mounting groove 13, and a pin 43 is provided on the bottom surface of the insert 4 that is adapted to the mounting groove 13. The pin 43 is adapted to the positioning hole 17 to facilitate the quick positioning and assembly of the insert 4 and the mounting groove 13.

[0045] This utility model discloses a modular casting mold for investment casting, which is designed with an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 are respectively provided with mounting grooves 13. Inserts 4 of different lengths can be installed through the mounting grooves 13, which can form cavities of different lengths with the wax injection head to meet different casting needs. The inserts 4 can be quickly assembled and disassembled through the design of the lugs 41 and the countersunk holes 14, which can meet different casting needs and reduce costs.

[0046] On the other hand, the modular casting mold for investment casting of this utility model has a sealing groove 15 in the handle groove 10. The sealing block 16 in the sealing groove 15 can be used to seal the casting rod 100 after the handle is put in, relying on the compression characteristics of the rubber itself to prevent wax from running out during the wax injection process.

[0047] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mold for a modular pouring spout for investment casting, suitable for spouts of the same cross section and different lengths, characterized in that, This modular investment casting mold includes an upper mold and a lower mold. Both the upper and lower molds have forming cavities. When the upper and lower molds are combined with the forming cavities, a cavity is formed that matches the shape of the casting bar. The forming cavity includes a wax injection head communicating with a handle groove and a tail with the same cross-section. The wax injection head communicates with the tail. The lower and upper molds each have mounting grooves communicating with the tail. Countersunk holes are provided on both sides of the mounting grooves. An insert is detachably installed within the mounting groove. Lugs that match the countersunk holes are provided on both sides of the insert. The end of the insert abuts against the tail, and a wax injection groove with the same cross-section as the tail is provided on the insert.

2. The modular gating mold for investment casting as described in claim 1, characterized in that, There are multiple inserts, and the length of the wax injection groove on each insert is different.

3. A modular gating mold for investment casting as described in claim 2, characterized in that, The lug is fitted with a locking screw, which passes through the countersunk hole to lock it in place.

4. A modular gating mold for investment casting as described in claim 1, characterized in that, The handle groove on the upper mold and the handle groove on the lower mold form a mating hole.

5. A modular gating mold for investment casting as described in claim 4, characterized in that, A sealing groove is provided in the middle of the handle groove, and the width of the sealing groove is greater than the width of the handle groove.

6. A modular gating mold for investment casting as described in claim 5, characterized in that, An arc-shaped sealing block is provided in the sealing groove, and the sealing block on the upper mold and the sealing block on the lower mold are combined to form a sealing ring.

7. A modular gating mold for investment casting as described in claim 6, characterized in that, The sealing block is a rubber block.

8. A modular gating mold for investment casting as described in claim 4, characterized in that, The bottom of the mounting groove is provided with a positioning hole, and the bottom surface of the insert that is adapted to the mounting groove is provided with a pin, which is adapted to the positioning hole.

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