Wax injection and sizing device for lost wax casting

Abstract

The wax injection and sizing device for lost wax casting comprises a working box, one end of the working box is a wax injection area, the other end of the working box is a sizing area, an air cylinder is arranged in the working box and slidably connected with the bottom face of the working box, a carrying platform is arranged at the output end of the air cylinder, and a fixing mechanism is arranged on the carrying platform. A mold is placed on the carrying platform, the fixing mechanism is used for fixing a grinding tool, a wax injection head is arranged above the wax injection area, a sizing disc is arranged in the sizing area, and a mold opening assembly is arranged between the sizing area and the wax injection area. According to the wax injection and sizing device for lost wax casting, the wax injection process and the sizing process are integrated into one working box, meanwhile, the middle demolding process is arranged in the working box, so that automatic wax injection, demolding and sizing steps of a wax mold are achieved, the deformation problem in the hollow wax mold transferring process is solved, and the production efficiency is improved. And the efficiency of producing the wax mould is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of precision casting, in particular to a wax injection and sizing device for lost wax casting. Background Art

[0002] Lost wax casting is also called precision casting. Its products are precise, complex, and close to the final shape of parts. They can be used directly without or with very little processing. It is an advanced process for near-net-shape forming. Lost wax casting, also known as dewaxing, is a casting method.

[0003] In the lost wax casting process, a wax model needs to be made first, then covered with ceramic particles through sizing, and finally burned out through high-temperature sintering, leaving a cavity for injecting molten metal; the sizing and sandblasting process is to heat-weld the entire wax model on the wax seat for sizing and sandblasting. Sizing refers to coating a layer of slurry on the surface of the wax model to increase the surface smoothness and heat resistance of the wax model. Sandblasting refers to the use of sprayed sand particles to treat the wax model to increase its roughness and adhesion. The properties of wax models are not resistant to high temperatures. In the summer, the temperature in the production workshop is high. When the temperature is high, the staff often deforms or deflates when taking the wax model. Many manufacturers use solid wax models instead. Although solid wax models can solve the problems of deflation and deformation, solid wax models are prone to breaking in the middle due to their own weight when throwing materials during the sizing and sandblasting process. In the sizing box, the excess material cannot be thrown away during the sizing process. Therefore, solving the transfer problem of hollow wax molds can avoid deformation and various problems caused by solid wax molds.

[0004] This case was created to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The object of the present invention is to provide a wax injection and sizing device for lost wax casting to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wax injection and sizing device for lost wax casting, comprising a working box, one end of the working box is a wax injection area, and the other end is a sizing area, a cylinder is provided in the working box, the cylinder is slidably connected to the bottom surface of the working box, the output end of the cylinder is provided with a loading platform, the loading platform is provided with a fixing mechanism, a mold is placed on the loading platform, the fixing mechanism is used to fix the mold, a wax injection head is provided above the wax injection area, a sizing plate is provided in the sizing area, and a mold opening assembly is provided between the sizing area and the wax injection area.

[0009] Preferably, the mold comprises an upper mold and a lower mold, the upper end surface of the upper mold is provided with a wax injection port, and handles are provided on both sides of the upper mold, and the handles are cylindrical.

[0010] Preferably, the mold opening assembly includes a mold opening hanger and a cooling assembly, the mold opening hanger includes two vertical plates and two hook plates, the two vertical plates are fixed on the top of the working box, the two hook plates are respectively connected to the lower ends of the vertical plates, the hook plates are rotatably connected to the vertical plates, the lower ends of the two hook plates are hook-shaped and opposite, and the distance between them is equal to the distance between the handles on both sides of the upper mold.

[0011] Preferably, a transverse plate is fixedly provided on the opposite sides of the vertical plate and the hook plate, a spring is provided between the vertical plate and the transverse plate of the hook plate, and the spring is in a normal state when the vertical plate and the hook plate are both vertical.

[0012] Preferably, a fixed plate is provided above the sizing area, fixed nozzles are provided on both sides of the fixed plate, a motor is provided at the lower end of the fixed plate, a chuck is provided at the output end of the motor, and the middle of the chuck is hollow for inserting the wax model bracket.

[0013] Preferably, a gap is provided in the middle section of the clamp, and the gap is flush with the fixed nozzle.

[0014] Preferably, a wax injection mechanism is provided above the working box, the wax injection head is connected to the wax injection mechanism, a pipeline is provided between the wax injection mechanism and the fixed plate, and the pipeline connects the wax storage box and the fixed nozzle in the wax injection mechanism.

[0015] Preferably, a cooling fan is provided above the mold opening hanger, and a circulation hole is provided in the working box above the cooling fan.

[0016] (III) Beneficial effects

[0017] After adopting the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention is a wax injection and sizing device for lost wax casting, which integrates the wax injection process and the sizing process into a working box, and at the same time sets an intermediate demoulding process in the working box, so that the wax mold can realize the steps of automatic wax injection, demoulding and sizing, which not only solves the deformation problem of the hollow wax mold during the transfer process, but also improves the efficiency of producing wax molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0020] Figure 3 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0021] In the figure: 1 working box, 2 cylinder, 3 loading platform, 4 fixing mechanism, 5 mold, 51 upper mold, 52 lower mold, 53 handle, 6 wax injection head, 7 sizing plate, 8 mold opening hanger, 81 vertical plate, 82 hook plate, 83 horizontal plate, 84 spring, 9 fixing plate, 10 fixing nozzle, 11 clamp, 12 gap, 13 pipeline, 14 cooling fan, 15 flow hole. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below through the accompanying drawings and examples.

[0023] The embodiment of the present invention provides a wax injection and sizing device for lost wax casting, such as Figure 1-3 As shown, it includes a working box 1, one end of the working box 1 is a wax injection area, and the other end is a sizing area. A cylinder 2 is provided in the working box 1, and the cylinder 2 is slidably connected to the bottom surface of the working box 1. The sliding can be achieved in a variety of ways. The figure shows that it is achieved by using a slide rail, and the specific prior art will not be repeated. A loading platform 3 is provided at the output end of the cylinder 2, and a fixing mechanism 4 is provided on the loading platform 3. A mold 5 is placed on the loading platform 3. The fixing mechanism 4 is used to fix the mold 5 to adjust and fix different molds 5. A wax injection head 6 is provided above the wax injection area, and a sizing disk 7 is provided in the sizing area. The sizing nozzle on the sizing disk 7 is not shown. A mold opening assembly is provided between the sizing area and the wax injection area, and the mold opening assembly is used to open the upper and lower molds.

[0024] Reference Figure 1 The mold 5 includes an upper mold 51 and a lower mold 52. A wax injection port is provided on the upper end surface of the upper mold 51. A wax injection head 6 is inserted into the wax injection port for wax injection. Handles 53 are provided on both sides of the upper mold 51. The handles 53 are cylindrical.

[0025] Reference Figure 2 The mold opening assembly includes a mold opening hanger 8 and a cooling assembly. The mold opening hanger 8 includes two vertical plates 81 and two hook plates 82. The two vertical plates 81 are fixed on the top of the working box 1. The two hook plates 82 are respectively connected to the lower ends of the vertical plates 81. The hook plates 82 are rotatably connected to the vertical plates 81. The lower ends of the two hook plates 82 are hook-shaped and opposite to each other, and the distance between them is equal to the distance between the handles 53 on both sides of the upper mold 51. A cooling fan 14 is provided above the mold opening hanger 8, and a flow hole 15 is provided in the working box 1 above the cooling fan 14. A horizontal plate 83 is fixed on the opposite side of the vertical plate 81 and the hook plate 82. A spring 84 is provided between the vertical plate 81 and the horizontal plate 83 of the hook plate 82. When the vertical plate 81 and the hook plate 82 are both vertical, the spring 84 is in a normal state.

[0026] When opening the mold, the cylinder 2 moves the wax-injected mold to the bottom of the mold opening assembly, and the output end of the cylinder 2 extends. In the process of extending and lifting the mold 5, the handle 53 contacts the hook plate 82, pushing the hook plate 82 outward, and the mold 5 continues to be lifted. The lower end of the hook plate 82 swings back and hooks the handle 53 under the action of the spring 84, and then the cooling fan 14 is turned on to cool the mold 5 and the wax mold therein. Different cooling times are set according to different wax molds and molds 5. After cooling, the cylinder 2 retracts and takes back the lower mold 52. The upper mold 51 is hooked on the top under the action of the hook plate 82, and the wax mold is located in the lower mold.

[0027] Reference Figure 3 A fixed plate 9 is provided above the sizing area, fixed nozzles 10 are provided on both sides of the fixed plate 9, a motor is provided at the lower end of the fixed plate 9, and a chuck 11 is provided at the output end of the motor. The middle of the chuck 11 is hollow for inserting the wax model support (a flow channel is provided in the mold 5, and the injection wax is injected through the flow channel. After the wax model is formed, there is also a model of the flow channel on the top, which is the support of the wax model). A gap 12 is provided in the middle section of the chuck 11, and the gap 12 is flush with the fixed nozzle 10. After the support of the wax model is inserted into the chuck 11, the fixed nozzle 10 starts to work and fixes the wax model and the chuck 11 with wax liquid. After fixation, the motor and the sizing disk 7 are started, and the wax model is sizing when it rotates.

[0028] A wax injection mechanism is provided above the working box 1, and the wax injection head 6 is connected to the wax injection mechanism. A pipeline 13 is provided between the wax injection mechanism and the fixed plate 9, and the pipeline connects the wax storage box and the fixed nozzle 10 in the wax injection mechanism. The wax liquid used by the fixed nozzle 10 is consistent with the wax model raw material to ensure the quality of the wax model.

[0029] A wax injection and sizing device for lost wax casting combines the wax injection process and the sizing process into a working box 1, and simultaneously sets an intermediate demoulding process in the working box 1, so that the wax mold can realize the steps of automatic wax injection, demoulding and sizing, which not only solves the deformation problem of the hollow wax mold in the transfer process, but also improves the efficiency of producing the wax mold.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wax injection and sizing device for lost wax casting, characterized in that: The invention comprises a working box (1), one end of the working box (1) is a wax injection area, and the other end is a sizing area. A cylinder (2) is arranged inside the working box (1), and the cylinder (2) is slidably connected to the bottom surface of the working box (1). A loading platform (3) is arranged at the output end of the cylinder (2), and a fixing mechanism (4) is arranged on the loading platform (3). A mold (5) is placed on the loading platform (3), and the fixing mechanism (4) is used to fix the mold (5). A wax injection head (6) is arranged above the wax injection area, and a sizing plate (7) is arranged in the sizing area. A mold opening component is arranged between the sizing area and the wax injection area.

2. A wax injection and sizing device for lost wax casting according to claim 1, characterized in that: The mold (5) comprises an upper mold (51) and a lower mold (52); a wax injection port is provided on the upper end surface of the upper mold (51); handles (53) are provided on both sides of the upper mold (51); and the handles (53) are cylindrical.

3. A wax injection and sizing device for lost wax casting according to claim 2, characterized in that: The mold opening assembly includes a mold opening hanger (8) and a cooling assembly. The mold opening hanger (8) includes two vertical plates (81) and two hook plates (82). The two vertical plates (81) are fixed on the top of the working box (1). The two hook plates (82) are respectively connected to the lower ends of the vertical plates (81). The hook plates (82) are rotatably connected to the vertical plates (81). The lower ends of the two hook plates (82) are hook-shaped and opposite to each other, and the distance between them is equal to the distance between the handles (53) on both sides of the upper mold (51).

4. A wax injection and sizing device for lost wax casting according to claim 3, characterized in that: A transverse plate (83) is fixedly arranged on the opposite side of the vertical plate (81) and the hook plate (82), a spring (84) is arranged between the vertical plate (81) and the transverse plate (83) of the hook plate (82), and the spring (84) is in a normal state when the vertical plate (81) and the hook plate (82) are both vertical.

5. A wax injection and sizing device for lost wax casting according to claim 1, characterized in that: A fixed plate (9) is provided above the sizing area, fixed nozzles (10) are provided on both sides of the fixed plate (9), a motor is provided at the lower end of the fixed plate (9), a chuck (11) is provided at the output end of the motor, and the chuck (11) is hollow in the middle for inserting the wax model bracket.

6. A wax injection and sizing device for lost wax casting according to claim 5, characterized in that: A gap (12) is provided in the middle section of the clamp (11), and the gap (12) is flush with the fixed nozzle (10).

7. A wax injection and sizing device for lost wax casting according to claim 5, characterized in that: A wax injection mechanism is provided above the working box (1), the wax injection head (6) is connected to the wax injection mechanism, a pipeline (13) is provided between the wax injection mechanism and the fixed plate (9), and the pipeline is connected to the wax storage box and the fixed nozzle (10) in the wax injection mechanism.

8. A wax injection and sizing device for lost wax casting according to claim 3, characterized in that: A cooling fan (14) is provided above the mold opening hanger (8), and a circulation hole (15) is provided in the working box (1) above the cooling fan (14).

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