Wax pattern 3D printer for investment casting

Abstract

The utility model discloses a wax pattern 3D printer for investment casting, which comprises a wax pattern 3D printer and a forming platform mounted on the wax pattern 3D printer, isolation paper is arranged on the forming platform, dial wheel mechanisms are arranged in two sides of the forming platform, two ends of the isolation paper are respectively connected onto the two groups of dial wheel mechanisms, and the two groups of dial wheel mechanisms are connected with the isolation paper. And the shifting wheel mechanism is suitable for fixing the isolation paper on the forming platform. According to the wax mold 3D printer for investment casting, by using proper isolation paper and a shifting wheel mechanism, direct adhesion between a wax mold and the forming platform can be effectively avoided, the demolding difficulty is reduced, the demolding efficiency is improved, the isolation paper is more convenient to replace and fix through the design of the winding mechanism, and the practicability of the wax mold 3D printer for investment casting is improved. According to the wax mold 3D printer for investment casting, the operation process is simplified, the production efficiency is improved, the release paper is effectively prevented from being damaged in the using process through the design of multiple fillets, the service life of the release paper is prolonged, and the production efficiency and economical efficiency are further improved.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing technology, specifically a wax pattern 3D printer for investment casting. Background Technology

[0002] Investment casting is a precision casting method. Conventional casting processes require pre-made molds, resulting in long development cycles; conventional machining equipment often struggles to accurately form the complex internal structures of components. In recent years, 3D printing technology for metal materials has been widely used due to its short development cycle and high product performance, but its development cost is high, 3-5 times that of traditional casting and machining processes.

[0003] The preparation of wax models is one of the key aspects of investment casting. In existing 3D printing technologies for wax models used in investment casting, the raw materials for printing wax models are mostly plastics such as PS and ABS, as well as some composite paraffin waxes. The difficulty in demolding these plastics and composite paraffin waxes from the printer's forming platform mainly lies in the following aspects:

[0004] 1. Existing PS, ABS plastics and composite paraffin wax have melting temperatures much higher than those of paraffin wax used in traditional investment casting. These materials require higher temperatures and even pressure during demolding, which increases the complexity and energy consumption of demolding.

[0005] 2. Because 3D printing technology can create complex geometric shapes, these complex molds are prone to sticking and deformation during demolding, making the demolding process more difficult;

[0006] 3. In order to demold smoothly, a release agent is usually required. However, improper selection and use of the release agent may cause contamination on the upper surface of the molding platform, affecting subsequent use.

[0007] In view of this, a wax pattern 3D printer for investment casting is designed. Utility Model Content

[0008] The purpose of this invention is to provide a wax pattern 3D printer for investment casting, so as to solve the problems existing in the use of the existing wax pattern 3D printers mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a wax pattern 3D printer for investment casting, comprising a wax pattern 3D printer and a forming platform mounted on the wax pattern 3D printer;

[0010] The forming platform is provided with release paper, and both sides of the forming platform are provided with dial mechanisms.

[0011] The two ends of the release paper are respectively connected to two sets of dial mechanisms, which are adapted to fix the release paper on the forming platform;

[0012] The forming platform is equipped with a winding mechanism, which is adapted to operate the dial mechanism.

[0013] Preferably, the top two edges of the forming platform are rounded along their own width direction.

[0014] Preferably, the dial mechanism includes a side groove, a fixed shaft, a cam, and a lifting ring, wherein:

[0015] The side groove is provided on the inner side of the forming platform;

[0016] The fixed shaft is fixed in the side groove;

[0017] The cam is mounted on a fixed shaft, and the release paper is connected to the cam.

[0018] The lifting ring is fixedly connected to the surface of the cam.

[0019] Preferably, the upper opening of the side groove is rounded, and the innermost side of the side groove has an arc-shaped structure. The end of the cam away from the fixed shaft is rotatably connected to the innermost side of the side groove.

[0020] Preferably, the winding mechanism includes a motor slot, a winding motor, a winding roller, and two sets of tensioning wires, wherein:

[0021] The motor slot is located in the middle of the forming platform;

[0022] The winding motor is installed inside the motor slot;

[0023] The winding roller is fixedly connected to the motor shaft of the take-up motor;

[0024] One end of each of the two sets of tensioning wires is fixedly connected to the winding roller, and the other end of each set of tensioning wires is fixedly connected to the two sets of lifting rings respectively. The tensioning wires are movably threaded through the forming platform.

[0025] Preferably, the winding roller rotates to wind up the two sets of tensioning wires, thereby causing the tensioning wire drive cam to rotate.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. This wax pattern 3D printer for investment casting can effectively avoid direct adhesion between the wax pattern and the molding platform by using suitable release paper and a turntable mechanism, thereby reducing demolding difficulty and improving demolding efficiency.

[0028] 2. The design of the wax pattern 3D printer for investment casting makes the replacement and fixing of the release paper more convenient through the design of the rewinding mechanism, which simplifies the operation process and improves production efficiency.

[0029] 3. This wax pattern 3D printer for investment casting effectively prevents the release paper from being damaged during use by using multiple rounded corner designs, extending the service life of the release paper and further improving production efficiency and economy. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a wax pattern 3D printer for investment casting according to this utility model;

[0031] Figure 2 This utility model relates to a wax pattern 3D printer for investment casting. Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 This is a front structural cross-sectional view of the molding platform of a wax pattern 3D printer for investment casting according to this utility model;

[0033] Figure 4 This utility model relates to a wax pattern 3D printer for investment casting. Figure 3 Enlarged view of point B in the middle;

[0034] Figure 5 This utility model relates to a wax pattern 3D printer for investment casting. Figure 4 Another structural diagram in the diagram;

[0035] Figure 6 This is a partial top view of the molding platform of a wax pattern 3D printer for investment casting according to this utility model.

[0036] In the picture:

[0037] 1. Wax model 3D printer; 2. Molding platform; 3. Release paper;

[0038] 4. Dial mechanism; 41. Side groove; 42. Fixed shaft;

[0039] 43. Cam; 44. Ring;

[0040] 5. Winding mechanism; 51. Motor slot; 52. Winding motor;

[0041] 53. Winding roller; 54. Tensioning and drawing. Detailed Implementation

[0042] 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.

[0043] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Please see Figure 1-6 This utility model provides a technical solution: a wax pattern 3D printer for investment casting, including a wax pattern 3D printer 1 and a forming platform 2 installed on the wax pattern 3D printer 1.

[0046] The forming platform 2 is provided with a release paper 3, and both sides of the forming platform 2 are provided with a dial mechanism 4.

[0047] The top two edges of the forming platform 2 are rounded along its width. For details, please refer to the attached instruction manual. Figure 1-4 When the release paper 3 is fixed, it needs to be attached to the top two sides of the forming platform 2. The rounded corner design avoids damage to the release paper 3, extends the service life of the release paper, and improves production efficiency and economy.

[0048] The two ends of the release paper 3 are respectively connected to two sets of dial mechanisms 4, which are adapted to fix the release paper 3 on the forming platform 2.

[0049] The dial mechanism 4 includes a side groove 41, a fixed shaft 42, a cam 43, and a lifting ring 44, wherein:

[0050] The side groove 41 is provided on the inner side of the forming platform 2;

[0051] The fixed shaft 42 is fixed in the side groove 41;

[0052] The cam 43 is movably mounted on the fixed shaft 42, and the isolation paper 3 is connected to the cam 43;

[0053] The lifting ring 44 is fixedly connected to the surface of the cam 43.

[0054] Specifically, both ends of the cam 43 are arc-shaped structures. The cam 43 is made of rubber. The design of the dial mechanism 4 enables the release paper 3 to be stably fixed on the forming platform 2, ensuring the continuity and stability of the printing process.

[0055] The upper opening of the side groove 41 is rounded, and the innermost part of the side groove 41 has an arc-shaped structure. The end of the cam 43 away from the fixed shaft 42 is rotatably connected to the innermost part of the side groove 41. Specifically, both ends of the release paper 3 are connected to the two sets of side grooves 41 respectively. When fixed, the release paper 3 needs to be fitted to the upper opening of the side groove 41. Therefore, the rounded corner and arc-shaped structure design reduces the wear and damage of the release paper 3 during use, further improving the service life of the release paper 3. (Refer to the attached instruction manual.) Figure 4 Before printing begins, the operator can place one side of the release paper 3 into the side groove 41 until the edge of the release paper 3 is located between the innermost arc of the side groove 41 and the cam 43. Refer to the instruction manual. Figure 5 When the cam 43 rotates to a certain angle, the cam 43 can press the release paper 3 against the inner wall of the side groove 41, thereby fixing the release paper 3.

[0056] The forming platform 2 is equipped with a winding mechanism 5, which is suitable for controlling the dial mechanism 4.

[0057] The winding mechanism 5 includes a motor slot 51, a winding motor 52, a winding roller 53, and two sets of tensioning and drawing wires 54, wherein:

[0058] The motor slot 51 is located in the middle of the forming platform 2;

[0059] The winding motor 52 is installed in the motor slot 51;

[0060] The winding roller 53 is fixedly connected to the motor shaft of the take-up motor 52;

[0061] One end of each of the two sets of tensioning wires 54 is fixedly connected to the winding roller 53, and the other end of each of the two sets of tensioning wires 54 is fixedly connected to the two sets of lifting rings 44 respectively. The tensioning wires 54 are movably inserted into the forming platform 2.

[0062] Specifically, the forming platform 2 has a channel for the tensioning wire 54 to pass through. One end of the channel is connected to the motor slot 51, and the other end is connected to the side slot 41. The design of the winding mechanism 5 makes it easier to replace and fix the release paper 3, simplifies the operation process, and improves production efficiency.

[0063] The winding roller 53 rotates to wind up two sets of tensioning wires 54, which in turn drive the cam 43 to rotate. For details, please refer to the attached instruction manual. Figure 3-6 The winding motor 52 can drive the winding roller 53 to rotate, which in turn drives the two sets of tensioning wire 54 to wind or release. The tensioning wire 54 then pulls the cam 43, and the rotation of the cam 43 fixes the release paper 3, ensuring the stability of the release paper 3 and the continuity of the printing process.

[0064] Specifically, during use, to ensure that the release paper 3 can adhere to the composite paraffin material, the release paper 3 can be made of silicone paper, PTFE-coated paper, or polyester-coated paper, wherein:

[0065] Silicone-coated paper: The paper surface is coated with a layer of silicone oil, which has good high temperature resistance and adhesion, and is suitable for demolding composite paraffin.

[0066] PTFE coated paper: PTFE has excellent high temperature resistance and chemical stability, which can effectively prevent the wax mold from sticking to the molding platform 2;

[0067] Polyester coated paper: A layer of polyester coating is applied to the surface of the paper, which has good abrasion resistance and adhesion, and is suitable for high-temperature environments.

[0068] Depending on the actual needs of use, a suitable release paper 3 can be selected to ensure a smooth demolding process.

[0069] Specifically, after printing is completed, the release paper 3 and the molded wax model can be removed from the molding platform 2 simultaneously. The release paper 3 can effectively prevent direct adhesion between the wax model and the molding platform 2, reducing the difficulty of demolding. The staff can peel the release paper 3 off the molded wax model, improving demolding efficiency.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wax pattern 3D printer for investment casting, characterized in that, Includes a wax model 3D printer (1) and a molding platform (2) mounted on the wax model 3D printer (1); The forming platform (2) is provided with a release paper (3), and a dial mechanism (4) is provided on both sides of the forming platform (2). The two ends of the isolation paper (3) are respectively connected to two sets of dial mechanisms (4), and the dial mechanisms (4) are adapted to fix the isolation paper (3) on the forming platform (2); The forming platform (2) is provided with a winding mechanism (5), which is adapted to operate the dial mechanism (4).

2. The wax pattern 3D printer for investment casting according to claim 1, characterized in that: The top two sides of the forming platform (2) are rounded along its own width extension direction.

3. A wax pattern 3D printer for investment casting according to claim 1, characterized in that, The dial mechanism (4) includes a side groove (41), a fixed shaft (42), a cam (43), and a lifting ring (44), wherein: The side groove (41) is provided inside the side of the forming platform (2); The fixed shaft (42) is fixed in the side groove (41); The cam (43) is movably mounted on the fixed shaft (42), and the isolation paper (3) is connected to the cam (43); The lifting ring (44) is fixedly connected to the surface of the cam (43).

4. A wax pattern 3D printer for investment casting according to claim 3, characterized in that: The upper opening of the side groove (41) is rounded, and the innermost side of the side groove (41) is an arc-shaped structure. The end of the cam (43) away from the fixed shaft (42) is rotatably connected to the innermost side of the side groove (41).

5. A wax pattern 3D printer for investment casting according to claim 1, characterized in that, The winding mechanism (5) includes a motor slot (51), a winding motor (52), a winding roller (53), and two sets of tensioning wire drawing (54), wherein: The motor slot (51) is located in the middle of the forming platform (2); The winding motor (52) is installed in the motor slot (51); The winding roller (53) is fixedly connected to the motor shaft of the take-up motor (52); One end of each of the two sets of tensioning wires (54) is fixedly connected to the winding roller (53), and the other end of each of the two sets of tensioning wires (54) is fixedly connected to the two sets of lifting rings (44), and the tensioning wires (54) are movably inserted into the forming platform (2).

6. A wax pattern 3D printer for investment casting according to claim 5, characterized in that: The winding roller (53) rotates to wind up the two sets of tensioning wires (54), thereby causing the tensioning wires (54) to drive the cam (43) to rotate.

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