A reinforcement method for large heavy-duty wax mold modules

Abstract

This invention relates to the field of casting technology, and more particularly to a reinforcement method for a large, heavy-duty wax pattern assembly. A mandrel is embedded in the central sprue of the wax pattern assembly; the upper end of the mandrel is inserted into the central hole of the upper plate of a metal fixture; a first dewaxing port is provided at the center of the bottom surface of the horizontal sprue of the wax pattern assembly, and the lower end of the mandrel passes through the first dewaxing port and is inserted into the central hole of the lower plate of the metal fixture; the upper end of the central sprue abuts against the bottom surface of the upper plate, and the lower end of the first dewaxing port abuts against the top surface of the lower plate; multiple wax pattern connecting rods are bonded to the outer periphery of the wax pattern, and screws are inserted inside the connecting rods; the upper and lower ends of the screws are connected to the upper and lower plates, respectively. This makes the entire wax pattern assembly, the upper plate, and the lower plate a single unit, which enhances the overall rigidity of the wax pattern assembly and facilitates dewaxing and disassembly.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a method for reinforcing large heavy-duty wax mold modules. Background Technology

[0002] Combination Figure 1 The diagram shows the structure of the wax model module for the titanium alloy casing. The titanium alloy casing has a maximum outline dimension of φ1500×960mm, a casting weight of 1000kg, and a wax model weight of 230kg. After the gating system is installed, the resulting wax model module weighs 580kg. During the shell-making process, matching metal fixtures are often used to clamp the wax model module within the fixtures. During the coating rotation, the clamping force of the fixtures on the wax model module supports the rotation of the module.

[0003] However, traditional metal tooling and wax mold assembly are often connected only through the mandrel of the central sprue and the bottom dewaxing port, while the sprue and wax mold assembly are connected only through the bottom runner. Since the height of the wax mold assembly is 960mm, the lever arm is long and the force is uneven when tilted or rotated, making it prone to falling. Summary of the Invention

[0004] The main objective of this invention is to propose a reinforcement method for large heavy-duty wax mold modules, aiming to solve the aforementioned technical problems.

[0005] To achieve the above objectives, this invention proposes a reinforcement method for a large, heavy-duty wax model module. A mandrel is embedded within the central sprue of the wax model module. The upper end of the mandrel is inserted into the central hole of the upper plate of a metal fixture. A first dewaxing port is provided at the center of the bottom surface of the horizontal sprue of the wax model module. The lower end of the mandrel passes through the first dewaxing port and is inserted into the central hole of the lower plate of the metal fixture. The upper surface of the central sprue abuts against the bottom surface of the upper plate, and the lower end of the first dewaxing port abuts against the top surface of the lower plate. Multiple wax model connecting rods are bonded to the outer periphery of the wax model, and screws are threaded through the interior of the wax model connecting rods. The upper and lower ends of the screws are connected to the upper and lower plates, respectively.

[0006] Preferably, multiple connecting blocks are bonded to the wax model connecting rod, and the connecting blocks are bonded to the wax model on the wax model module.

[0007] Preferably, the wax model on the wax model module has a guide ring and an upper flow channel ring; each wax model connecting rod is provided with two connecting blocks, one of which is bonded to the outer peripheral surface of the guide ring, and the other connecting block is bonded to the outer peripheral surface of the upper flow channel ring.

[0008] Preferably, a plurality of second dewaxing ports are bonded to the bottom surface of the horizontal runner; the lower ends of the second dewaxing ports abut against the top surface of the lower plate.

[0009] Preferably, there are ten second dewaxing ports, which are evenly distributed in a ring on the bottom surface of the horizontal gating system.

[0010] Preferably, two fastening nuts are screwed onto the upper and lower ends of the screw; the two fastening nuts at the upper end of the screw are located on the upper and lower sides of the upper plate, respectively; and the two fastening nuts at the lower end of the screw are located on the upper and lower sides of the lower plate, respectively.

[0011] Preferably, multiple tie rods are provided between the lower plate and the upper plate.

[0012] Preferably, a plurality of first lugs are integrally formed on the outer peripheral surface of the lower plate; a plurality of second lugs are integrally formed on the outer peripheral surface of the upper plate; the upper end of the pull rod passes through the second lug and is screwed with a locking nut; the lower end of the pull rod passes through the first lug and is screwed with a locking nut.

[0013] Preferably, a plurality of first relief holes are provided on the lower plate; and a plurality of second relief holes are provided on the upper plate.

[0014] Preferably, the number of wax mold connecting rods is 8 to 10.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0016] (1) In this invention, a mandrel is embedded in the central sprue, with the upper end of the mandrel inserted into the central hole of the upper plate of the metal fixture and the lower end inserted into the central hole of the lower plate of the metal fixture; at the same time, multiple wax model connecting rods are bonded to the outer periphery of the wax model, and screws are inserted inside the wax model connecting rods; the upper and lower ends of the screws are respectively connected to the upper plate and the lower plate, so that the entire wax model assembly is connected to the upper plate and the lower plate as a whole, which can enhance the overall rigidity of the wax model assembly, facilitate dewaxing and disassembly, and facilitate the rotation and coating of large and heavy wax model assemblies, effectively improving the integrity of the mold shell.

[0017] (2) In this invention, by providing multiple tie rods between the lower plate and the upper plate, the overall rigidity of the metal tooling is further increased, and the overall rigidity of the large heavy wax mold module is further increased.

[0018] (3) In this invention, by setting the first dewaxing port and the second dewaxing port, the wax mold module is well supported, which helps to increase the overall rigidity of the wax mold module. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the wax mold module structure of the titanium alloy casing.

[0021] Figure 2 This is a top view of the wax model module after reinforcement according to the present invention;

[0022] Figure 3 for Figure 2 Sectional view of AA;

[0023] Figure 4 This is a three-dimensional structural diagram of the reinforced wax model module according to the present invention;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0026] Figure 7 for Figure 4 A magnified view of point C in the middle.

[0027] Reference numerals: 1. Lower plate; 1a. First lug; 1b. First lightening hole; 2. Upper plate; 2a. Second lug; 2b. Second lightening hole; 3. Mandrel; 4. Wax mold connecting rod; 4a. Connecting block; 5. Screw; 6. Horizontal sprue; 7. First dewaxing port; 8. Central sprue; 9. Guide ring; 10. Upper runner ring; 11. Tie rod; 12. Second dewaxing port; 13. Fastening nut. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0031] As shown in the attached figures, a method for reinforcing a large, heavy-duty wax model assembly includes embedding a mandrel 3 within the central sprue 8 of the wax model assembly; the upper end of the mandrel 3 is inserted into the central hole of the upper plate 2 of the metal fixture; a first dewaxing port 7 is provided at the center of the bottom surface of the horizontal sprue 6 of the wax model assembly, and the lower end of the mandrel 3 passes through the first dewaxing port 7 and is inserted into the central hole of the lower plate 1 of the metal fixture; the upper end of the central sprue 8 abuts against the bottom surface of the upper plate 2, and the lower end of the first dewaxing port 7 abuts against the top surface of the lower plate 1; multiple wax model connecting rods 4 are bonded to the outer periphery of the wax model, and screws 5 are inserted inside the wax model connecting rods 4; the upper and lower ends of the screws 5 are connected to the upper plate 2 and the lower plate 1, respectively. In this embodiment, the number of wax model connecting rods 4 is 8 to 10.

[0032] Combination Figure 5 As shown, multiple connecting blocks 4a are bonded to the wax model connecting rod 4, and the connecting blocks 4a are bonded to the wax model on the wax model module.

[0033] Combination Figure 1 and Figure 5 As shown, the wax model on the wax model module has a guide ring 9 and an upper flow channel ring 10; each wax model connecting rod 4 is provided with two connecting blocks 4a, one of which is bonded to the outer peripheral surface of the guide ring 9, and the other connecting block 4a is bonded to the outer peripheral surface of the upper flow channel ring 10.

[0034] Combination Figure 3As shown, multiple second dewaxing ports 12 are bonded to the bottom surface of the horizontal runner 6; the lower ends of the second dewaxing ports 12 abut against the top surface of the lower plate 1. By providing the first dewaxing ports 7 and the second dewaxing ports 12, the wax mold assembly is well supported, which helps to increase the overall rigidity of the wax mold assembly. Specifically, there are ten second dewaxing ports 12, which are evenly distributed in a ring on the bottom surface of the horizontal runner 6.

[0035] Combination Figure 4 , Figure 6 and Figure 7 As shown, two fastening nuts 13 are screwed onto the upper and lower ends of the screw 5. The two fastening nuts 13 at the upper end of the screw 5 are located on the upper and lower sides of the upper plate 2, respectively, which can restrict the axial position of the upper plate 2 on the screw 5. Furthermore, the two fastening nuts 13 at the lower end of the screw 5 are located on the upper and lower sides of the lower plate 1, respectively, to restrict the axial position of the lower plate 1 on the screw 5.

[0036] Combination Figure 3 , Figure 4 As shown, to further increase the overall rigidity of the metal tooling, multiple tie rods 11 are provided between the lower plate 1 and the upper plate 2. Specifically, multiple first lugs 1a are integrally formed on the outer peripheral surface of the lower plate 1; multiple second lugs 2a are integrally formed on the outer peripheral surface of the upper plate 2; the upper end of the tie rod 11 passes through the second lug 2a and is screwed with a locking nut; the lower end of the tie rod 11 passes through the first lug 1a and is screwed with a locking nut.

[0037] In order to reduce the weight of the lower plate 1 and the upper plate 2, a plurality of first weight-reducing holes 1b are provided on the lower plate 1; and a plurality of second weight-reducing holes 2b are provided on the upper plate 2.

[0038] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for reinforcing large heavy-duty wax mold modules, characterized in that, A mandrel (3) is embedded in the central sprue (8) of the wax mold assembly; the upper end of the mandrel (3) is inserted into the central hole of the upper plate (2) of the metal fixture; a first dewaxing port (7) is provided at the center of the bottom surface of the horizontal sprue (6) of the wax mold assembly, and the lower end of the mandrel (3) is inserted into the central hole of the lower plate (1) of the metal fixture after passing through the first dewaxing port (7); The upper end face of the central straight sprue (8) abuts against the bottom surface of the upper plate (2), and the lower end of the first dewaxing port (7) abuts against the top surface of the lower plate (1). Multiple wax model connecting rods (4) are glued to the outer periphery of the wax model, and screws (5) are inserted inside the wax model connecting rods (4); the upper and lower ends of the screws (5) are respectively connected to the upper plate (2) and the lower plate (1); Multiple connecting blocks (4a) are bonded to the wax model connecting rod (4), and the connecting blocks (4a) are bonded to the wax model on the wax model module; The wax model on the wax model module has a guide ring (9) and an upper flow channel ring (10); each wax model connecting rod (4) is provided with two connecting blocks (4a), one of which is bonded to the outer peripheral surface of the guide ring (9), and the other connecting block (4a) is bonded to the outer peripheral surface of the upper flow channel ring (10); Multiple second dewaxing ports (12) are bonded to the bottom surface of the horizontal runner (6); the lower ends of the second dewaxing ports (12) abut against the top surface of the lower plate (1).

2. The reinforcement method for a large heavy-duty wax mold module as described in claim 1, characterized in that, The number of the second dewaxing port (12) is ten, and they are evenly distributed in a ring on the bottom surface of the horizontal gating (6).

3. The reinforcement method for a large heavy-duty wax mold module as described in claim 1, characterized in that, The upper and lower ends of the screw (5) are each screwed with two fastening nuts (13); the two fastening nuts (13) at the upper end of the screw (5) are located on the upper and lower sides of the upper plate (2); the two fastening nuts (13) at the lower end of the screw (5) are located on the upper and lower sides of the lower plate (1).

4. The reinforcement method for a large heavy-duty wax mold module as described in claim 1, characterized in that, Multiple tie rods (11) are provided between the lower plate (1) and the upper plate (2).

5. The reinforcement method for a large heavy-duty wax mold module as described in claim 4, characterized in that, Multiple first lugs (1a) are integrally formed on the outer peripheral surface of the lower plate (1); multiple second lugs (2a) are integrally formed on the outer peripheral surface of the upper plate (2); the upper end of the pull rod (11) passes through the second lug (2a) and is screwed with a locking nut; the lower end of the pull rod (11) passes through the first lug (1a) and is screwed with a locking nut.

6. The reinforcement method for a large heavy-duty wax mold module as described in claim 1, characterized in that, A plurality of first relief holes (1b) are provided on the lower plate (1); a plurality of second relief holes (2b) are provided on the upper plate (2).

7. The reinforcement method for a large heavy-duty wax mold module as described in claim 1, characterized in that, The number of wax mold connecting rods (4) is 8 to 10.

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