Pre-embedded nut for increasing the strength of a wax pattern and a gating system having the same

Abstract

The utility model belongs to investment precision casting technical field, specifically disclose the pre -buried nut of wax pattern strength increase and the pouring system with this pre -buried nut, be applicable to T type runner, pre -buried nut of many tree direct runner including nut body and cylindrical piece, nut body and cylindrical piece coaxial fixed, the inside of cylindrical piece is equipped with internal thread hole. Be applicable to single tree direct runner, pre -buried nut of bottom disc runner including nut body, cylindrical piece and threaded rod, nut body and cylindrical piece coaxial fixed, the inside of cylindrical piece is equipped with internal thread hole, and threaded rod is connected in internal thread hole in screw thread. In the case of not increasing the volume of pouring system, the pre -buried nut of the scheme improvement application multiple product production, can enhance the strength of wax pattern, avoid the damage module to occur due to the wax pattern strength problem of pouring system. Since the volume of pouring system is not increased, the metal utilization rate will not be reduced, thereby the cost is controlled.

Description

Technical Field

[0001] This utility model belongs to the field of investment casting technology, and particularly relates to a pre-embedded nut for increasing the strength of a wax pattern and a gating system having the pre-embedded nut. Background Technology

[0002] Various types of gating systems are required when designing investment casting processes. Commonly used gating systems include: single-tree sprue, multi-tree sprue, T-sprue, and sprue with base plate.

[0003] The investment casting production process includes: wax pattern pressing → wax pattern assembly → shell making → melting and pouring → post-processing, etc. During process design, it is necessary to ensure the strength of the mold assembly during shell making to prevent breakage due to insufficient strength. Generally, increasing the volume of the gating system is used to improve mold strength, but this reduces metal utilization and increases production costs; this is particularly evident when producing high-temperature alloy blade castings. Utility Model Content

[0004] The purpose of this invention is to provide a pre-embedded nut for increasing the strength of a wax mold and a casting system having the pre-embedded nut, which can increase the strength of the wax mold and control production costs.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a pre-embedded nut for increasing the strength of a wax mold, comprising a nut body and a cylindrical component, wherein the nut body and the cylindrical component are coaxially fixed, and the cylindrical component has an internal threaded hole inside.

[0006] Furthermore, the length of the cylindrical component is 35-45mm.

[0007] Furthermore, the size of the internal threaded hole is M8×25.

[0008] The gating system includes an embedded nut for increasing the strength of the wax model, comprising an embedded nut, a base, a runner, and a sprue cup. The base and the runner are respectively pressed and formed, and the embedded nut is embedded in the base. The runner has a stepped hole, the large-diameter end of which is used to install the bottom of the base, and the small-diameter end of which is used to pass through a connecting threaded part on the sprue cup. The connecting threaded part can be threadedly connected to the internal threaded hole.

[0009] An embedded nut for increasing the strength of a wax mold includes a nut body, a cylindrical part, and a threaded rod. The nut body and the cylindrical part are coaxially fixed. The cylindrical part has an internal threaded hole, and the threaded rod is threaded into the internal threaded hole.

[0010] Furthermore, the length of the cylindrical component is 35-45mm.

[0011] Furthermore, the size of the internal threaded hole is M8×25.

[0012] A gating system having the aforementioned pre-embedded nut for increasing the strength of a wax mold, characterized in that: it includes a pre-embedded nut, a sprue, and a base, wherein the base and the sprue are respectively pressed and formed, the pre-embedded nut is pre-embedded in the sprue, and the base and the sprue are fixed.

[0013] Furthermore, the chassis is provided with positioning holes, through which the threaded rod extends from the sprue, and the positioning holes are used to position the end of the threaded rod.

[0014] The beneficial effects of this technical solution are as follows:

[0015] Pre-embedded nuts, including the nut body and cylindrical component, are suitable for T-slots and multi-tree sprues. Pre-embedded nuts, including the nut body, cylindrical component, and threaded rod, are suitable for single-tree sprues and sprues with a base. Without increasing the volume of the gating system, this improved pre-embedded nut design has been applied to the production of various products in our company, enhancing the strength of the wax mold and preventing damage to the mold due to wax mold strength issues in the gating system. Because the volume of the gating system is not increased, metal utilization is not reduced, thus controlling costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pre-embedded nut used to increase the strength of the wax mold in Embodiment 1 of this utility model;

[0017] Figure 2 A perspective view of the casting system with the pre-embedded nuts as described in Embodiment 1;

[0018] Figure 3 for Figure 2 A sectional view;

[0019] Figure 4 This is a schematic diagram of the pre-embedded nut used to increase the strength of the wax mold in Embodiment 2 of this utility model;

[0020] Figure 5 A perspective view of the casting system with the pre-embedded nuts as described in Embodiment 2;

[0021] Figure 6 for Figure 5 A sectional view;

[0022] Figure 7 This is a schematic diagram of the structure of the pre-embedded nut in the background art. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation methods:

[0024] The reference numerals in the accompanying drawings include: nut body 1, cylindrical part 2, base 3, horizontal runner 4, pouring cup 5, connecting threaded part 6, threaded rod 7, sprue 8, base plate 9, internal threaded hole 10.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] The basics are as follows: Figure 1 As shown: An embedded nut for increasing the strength of a wax mold includes a nut body 1 and a cylindrical part 2. The nut body 1 and the cylindrical part 2 are coaxially welded and fixed. The cylindrical part 2 has an internal threaded hole 10 with a size of M8×25. The length of the cylindrical part 2 is 35-45mm, specifically 40mm, and the outer diameter is Φ14.

[0028] like Figure 2 , 3 As shown, the gating system includes the aforementioned embedded nut for increasing the strength of the wax model, comprising an embedded nut, a base 3, a runner 4, and a sprue cup 5. The base 3 and the runner 4 are respectively pressed and formed, and the embedded nut is embedded in the base 3. The runner 4 has a stepped hole, the large-diameter end of which is used to install the bottom of the base 3, and the small-diameter end of which is used to pass through the connecting threaded part 6 on the sprue cup 5. The connecting threaded part 6 can be threadedly connected to the internal threaded hole 10. The connecting thread is specifically a bolt, as shown in 6.

[0029] Example 2

[0030] The basics are as follows: Figure 4 As shown, the embedded nut for increasing the strength of the wax model includes a nut body 1, a cylindrical part 2, and a threaded rod 7. The nut body 1 and the cylindrical part 2 are coaxially welded and fixed. The cylindrical part 2 has an internal threaded hole 10, and the threaded rod 7 is threaded into the internal threaded hole 10. The internal threaded hole 10 has a size of M8×25. The length of the cylindrical part 2 is 35-45mm, specifically 40mm, and the outer diameter is Φ14. The length of the threaded rod 7 is manufactured according to actual requirements.

[0031] like Figure 5 , 6As shown, the gating system includes the aforementioned embedded nut for increasing the strength of the wax model, comprising the embedded nut, a sprue 8, and a base 9. The base 9 and the sprue 8 are respectively pressed into shape. The embedded nut is embedded in the sprue 8, and the base 9 and the sprue 8 are fixed. The base 9 is provided with a positioning hole, through which a threaded rod 7 extends from the sprue 8. The positioning hole is used to position the end of the threaded rod 7.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pre-embedded nut for increasing the strength of a wax pattern, characterized in that: It includes a nut body (1) and a cylindrical part (2), the nut body (1) and the cylindrical part (2) are coaxially fixed, and the cylindrical part (2) is provided with an internal thread hole (10).

2. The embedded nut for increasing the strength of a wax pattern according to claim 1, wherein: The length of the cylindrical part (2) is 35-45mm.

3. The embedded nut for increasing the strength of a wax pattern according to claim 1, wherein: The internal threaded hole (10) has a size of M8×25.

4. A gating system having the wax strength increasing pre-embedded nut of claim 1, characterized in that: The system includes a pre-embedded nut, a base (3), a horizontal runner (4), and a pouring cup (5). The base (3) and the horizontal runner (4) are respectively pressed and formed. The pre-embedded nut is pre-embedded in the base (3). The horizontal runner (4) is provided with a stepped hole. The large diameter end of the stepped hole is used to install the bottom of the base (3), and the small diameter end of the stepped hole is used to pass through the connecting threaded part (6) on the pouring cup (5). The connecting threaded part (6) can be threadedly connected to the internal threaded hole (10).

5. A pre-embedded nut for increasing the strength of a wax pattern, characterized by: It includes a nut body (1), a cylindrical part (2) and a threaded rod (7). The nut body (1) and the cylindrical part (2) are coaxially fixed. The cylindrical part (2) has an internal threaded hole (10) inside. The threaded rod (7) is threadedly connected to the internal threaded hole (10).

6. The embedded nut for increasing the strength of a wax pattern according to claim 5, wherein: The length of the cylindrical part (2) is 35-45mm.

7. The embedded nut for increasing the strength of a wax pattern according to claim 5, wherein: The internal threaded hole (10) has a size of M8×25.

8. A gating system having the wax strength increasing pre-embedded nut of claim 5, characterized in that: It includes a pre-embedded nut, a sprue (8) and a base (9). The base (9) and the sprue (8) are respectively pressed and formed. The pre-embedded nut is pre-embedded in the sprue (8). The base (9) and the sprue (8) are fixed.

9. The gating system of claim 8, wherein: The chassis (9) is provided with a positioning hole, and the threaded rod (7) extends out of the sprue (8). The positioning hole is used to position the end of the threaded rod (7).

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