Gypsum mold investment casting device capable of performing porous pouring

Abstract

The utility model belongs to the technical field of casting, and discloses a gypsum mold investment casting device capable of performing porous pouring, which comprises a casting box, a second sliding frame is fixedly connected to the top end in the casting box, a second sliding block is slidably connected to the inside of the top end of the second sliding frame, and a motor is fixedly connected to the top end of the second sliding block. The front end of the motor is rotatably connected with a rotating arm, the outer side of the rotating arm abuts against a sliding rod, the outer side of the sliding rod is sleeved with a spring, the other end of the spring abuts against a clamp, a sliding groove is formed in the clamp, the sliding rod slides in the sliding groove of the clamp, the outer side of the clamp abuts against a crucible, and the inner portion of the outer side of the clamp is rotatably connected with a bolt. By means of the scheme, the problems that when gypsum slurry is poured, the gypsum slurry is poor in flowing performance and cannot evenly fill an investment mold, shrinkage cavities and other defects are caused after demolding, and therefore the quality and precision of castings are reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting, and particularly relates to a plaster mold investment casting device capable of multi-hole perfusion. Background Art

[0002] Multi-hole perfusion is a commonly used technique in plaster mold investment casting. During the process of plaster mold investment casting, plaster slurry is poured into a pre-prepared investment mold. After the slurry solidifies, through processes such as drying, dewaxing, and roasting, a plaster mold is finally obtained.

[0003] Meanwhile, the patent with the application number 201621276814.9 discloses a quantitative pouring device for plaster mold investment casting, which includes a vacuum pouring tank. A casting cavity placement table is provided at the inner bottom of the vacuum pouring tank. Above the casting cavity placement table, there is a ladle. On the inner top wall of the vacuum pouring tank, there is a slide rail, and a pulley slidably matched with it is arranged on the slide rail. Below the pulley, there is a fixed buckle. The top of the ladle is connected to the fixed buckle through a connecting piece. On one side of the top of the ladle, there is a molten metal inlet. At the inner bottom of the ladle, there are three conical liquid outlets. Inside the ladle, there is also a main infusion pipe made of quartz glass and three sub-infusion pipes. The main infusion pipe is communicated with the molten metal inlet.

[0004] However, in the implementation of related technologies, it is found that when the quantitative pouring device for plaster mold investment casting is used to pour plaster slurry, due to the poor fluidity of the plaster slurry, it cannot evenly fill the investment mold, resulting in defects such as shrinkage cavities after demolding, thereby reducing the quality and precision of the casting. Summary of the Utility Model

[0005] To solve the problems raised in the above background art, the utility model provides a plaster mold investment casting device capable of multi-hole perfusion, which has the advantages of selecting the fluidity of the plaster slurry, choosing the appropriate positions and quantities of perfusion holes, and minimizing the number of perfusion holes as much as possible on the premise of ensuring the quality of the casting. At the same time, it can improve the filling performance of the plaster slurry.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A plaster mold investment casting device capable of multi-hole perfusion includes a casting box. A second slide rail is fixedly connected to the inner top end of the casting box. A second slider is slidably connected to the inner top end of the second slide rail. The top of the second slider is fixedly connected to a motor. The front end of the motor is rotatably connected to a rotating arm. A slide rod is tightly abutted against the outside of the rotating arm. A spring is sleeved on the outside of the slide rod. The other end of the spring is tightly abutted against a clamp. A chute is opened inside the clamp. The slide rod slides inside the chute of the clamp. A crucible is tightly abutted against the outside of the slide rod. A bolt is rotatably connected to the outside of the crucible.

[0007] Preferably, a cavity is formed inside the casting box. A first sliding rack is fixedly connected to the inner wall at the rear side of the cavity of the casting box. A chute is formed inside the first sliding rack. A first slider is slidably connected inside the chute of the first sliding rack. A support rod is fixedly connected to the front end of the first slider.

[0008] Preferably, a rotating block is sleeved at the front end of the support rod. A substrate is rotatably connected to the front end of the rotating block. A heat preservation furnace is fixedly connected to the front end of the substrate. A plaster mold shell is slidably connected inside the heat preservation furnace.

[0009] Preferably, a feed inlet is fixedly connected to the left side of the casting box. The bottom end of the feed inlet is arranged at the top end of the plaster mold shell.

[0010] Preferably, an air inlet pipe is fixedly connected inside the crucible. An air suction pump is fixedly connected to the outer side of the air inlet pipe. There are two groups of air inlet pipes.

[0011] Preferably, an exhaust hole is formed inside the crucible. The exhaust hole of the crucible is of special shape.

[0012] Preferably, the plaster mold shell and the heat preservation furnace are rotatably connected inside the casting box. The outer side of the crucible is sleeved inside a fixture. There are two groups of crucibles.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By adding a vibration device and a vacuum auxiliary device to the outer side of the crucible, the present utility model drives a rotating arm to rotate through a motor. The rotating arm presses against a sliding rod. The sliding rod penetrates through the fixture to repeatedly impact the crucible inside, fully fusing the plaster slurry inside the crucible, reducing the generation of gaps, and cooperating with a vacuum pump to evacuate the inside to a vacuum, improving the quality and precision of the casting.

[0015] 2. By selecting a plaster slurry with better fluidity, on the premise of ensuring the quality of the casting, the number of pouring holes is minimized as much as possible, and pouring holes are arranged at the high positions of the casting and the positions where gas accumulation may occur, which helps to discharge gas and reduce the porosity defects in the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the structure of the plaster mold shell of the present utility model;

[0018] Figure 3 is a schematic diagram of the structure of the casting box of the present utility model;

[0019] Figure 4Schematic diagram of the feeding port structure of the present utility model;

[0020] Figure 5 Schematic diagram of the rotating arm structure of the present utility model.

[0021] In the figure: 1, casting box; 2, feeding port; 3, gypsum mold shell; 4, holding furnace; 5, first sliding frame; 6, first slider; 7, support rod; 8, rotating block; 9, base plate; 10, second sliding frame; 11, second slider; 12, motor; 13, rotating arm; 14, sliding rod; 15, spring; 16, suction pump; 17, intake pipe; 18, crucible; 19, bolt; 20, fixture. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1 to 5 shown, the present utility model provides a gypsum mold investment casting device capable of multi-hole perfusion, including a casting box 1. A second sliding frame 10 is welded to the inner top end of the casting box 1. Materials enter the special-shaped exhaust holes inside the crucible 18. Then, the second slider 11 slides to the right inside the second sliding frame 10 to facilitate pouring of the materials. Immediately afterwards, the motor 12 drives the rotating arm 13 to rotate. The rotating arm 13 rotates to squeeze the outer sliding rod 14 and the outer spring 15. The sliding rod 14 penetrates through the fixture 20 and repeatedly pushes and squeezes the crucible 18 inside it to shake it. The bolt 19 is used to clamp the fixture 20 to squeeze the materials inside it to be more fully fused. Finally, the suction pump 16 is started, and the suction pump 16 adsorbs the bubbles between the crucible 18 and the internal materials through the intake pipe 17.

[0024] Specifically, a cavity is provided inside the casting box 1. The first slider 6 slides along the direction to the right of the first sliding frame 5 inside the casting box 1. The first slider 6 drives the support rod 7 and the holding furnace 4 at the front end to slide to the right.

[0025] Furthermore, the rotating block 8 at the front end of the support rod 7 drives the base plate 9 at the front end to tilt to the right. The base plate 9 drives the holding furnace 4 at the front end to flip to the right, and the materials inside the gypsum mold shell 3 flow into the inside of the crucible 18.

[0026] Still further, the solid materials are poured into the inside of the holding furnace 4 inside the gypsum mold shell 3 through the feeding port 2 outside the casting box 1.

[0027] It should be noted that the intake pipe 17 is inserted into the interior of the crucible 18, and the suction pump 16 adsorbs the bubbles between the crucible 18 and the internal material through the intake pipe 17.

[0028] It is worth noting that the material enters the special-shaped exhaust holes inside the crucible 18, which helps to discharge gas and reduce the porosity defects in the casting.

[0029] It is worth introducing that the gypsum mold shell 3 and the holding furnace 4 are rotatably connected inside the casting box 1. The sliding rod 14 passes through the fixture 20 and repeatedly pushes and squeezes the crucible 18 inside it, shaking it, so that the materials inside it are more fully fused.

[0030] Among them, the motor 12 is a prior art and will not be elaborated here; at the same time, the present utility model also includes a power supply, a controller, a switch, etc., which are not the main technical points of this patent and will not be elaborated here; the "front, back, left, and right" perspectives of this device are based on Figure 1 the direction shown in the drawing.

[0031] Working principle:

[0032] First, the staff pours the solid material into the interior of the holding furnace 4 inside the gypsum mold shell 3 through the feed port 2 on the outside of the casting box 1. The holding furnace 4 heats the material inside it. The first slider 6 slides along the right side of the first slide rail 5 inside the casting box 1. The first slider 6 drives the support rod 7 and the front-end holding furnace 4 to slide to the right. During the sliding to the right, the rotating block 8 at the front end of the support rod 7 drives the front-end substrate 9 to tilt to the right, and the substrate 9 drives the front-end holding furnace 4 to flip to the right, and the material inside the gypsum mold shell 3 flows into the interior of the crucible 18;

[0033] During the flowing process, the material enters the special-shaped exhaust holes inside the crucible 18. Then the second slider 11 slides to the right inside the second slide rail 10 to facilitate the pouring of the material. Immediately afterwards, the motor 12 drives the rotating arm 13 to rotate. The rotating arm 13 rotates and squeezes the outer sliding rod 14 and the outer spring 15. The sliding rod 14 passes through the fixture 20 and repeatedly pushes and squeezes the crucible 18 inside it, shaking it, so that the materials inside it are more fully fused. Finally, the suction pump 16 is started, and the suction pump 16 adsorbs the bubbles between the crucible 18 and the internal material through the intake pipe 17.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plaster mold investment casting device capable of porous perfusion, comprising a casting box (1), characterized in that: A second carriage (10) is fixedly connected to the inner top end of the casting box (1). A second slider (11) is slidably connected to the inner top end of the second carriage (10). A motor (12) is fixedly connected to the top end of the second slider (11). A rotating arm (13) is rotatably connected to the front end of the motor (12). A slide bar (14) is tightly abutted against the outer side of the rotating arm (13). A spring (15) is sleeved on the outer side of the slide bar (14). The other end of the spring (15) is tightly abutted against a fixture (20). A chute is formed inside the fixture (20). The slide bar (14) slides inside the chute of the fixture (20). The outer side of the fixture (20) is tightly abutted against a crucible (18). A bolt (19) is rotatably connected to the inner side of the outer side of the fixture (20).

2. The plaster mold investment casting device capable of multi-hole perfusion according to claim 1, wherein: A cavity is formed inside the casting box (1). A first carriage (5) is fixedly connected to the rear inner wall of the cavity of the casting box (1). A chute is formed inside the first carriage (5). A first slider (6) is slidably connected to the inside of the chute of the first carriage (5). A support rod (7) is fixedly connected to the front end of the first slider (6).

3. The plaster mold investment casting device capable of porous perfusion according to claim 2, characterized in that: A rotating block (8) is sleeved on the front end of the support rod (7). A substrate (9) is rotatably connected to the front end of the rotating block (8). A heat preservation furnace (4) is fixedly connected to the front end of the substrate (9). A gypsum mold shell (3) is slidably connected to the inside of the heat preservation furnace (4).

4. A plaster mold investment casting device capable of performing porous perfusion according to claim 2, wherein: A feed inlet (2) is fixedly connected to the left side of the casting box (1). The bottom end of the feed inlet (2) is arranged at the top end of the gypsum mold shell (3).

5. A plaster mold investment casting device capable of multi-hole perfusion according to claim 1, characterized in that: An intake pipe (17) is fixedly connected to the inside of the crucible (18). An air suction pump (16) is fixedly connected to the outer side of the intake pipe (17). There are two groups of intake pipes (17).

6. The plaster mold investment casting device capable of multi-hole perfusion according to claim 5, wherein: An exhaust hole is formed inside the crucible (18). The exhaust hole of the crucible (18) is a special-shaped hole.

7. A plaster mold investment casting device capable of porous perfusion according to claim 4, characterized in that: The gypsum mold shell (3) and the heat preservation furnace (4) are rotatably connected inside the casting box (1). The outer side of the crucible (18) is sleeved inside the fixture (20). There are two groups of fixtures (20).

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