Slurry control device for turbine investment casting

Abstract

The utility model discloses a slurry control device for turbine investment casting, which comprises a support platform, a motor, a support, a connecting component, a slurry control component and a control component, the support is fixedly connected onto the support platform, the motor is provided with a mounting plate which is detachable from the motor, and two sides of the mounting plate are connected onto two side walls of the support through rotating shaft bearings. The connecting assembly is fixedly connected with the motor and the slurry control assembly, the control assembly is fixedly connected to the supporting platform, and the control assembly is electrically connected with the motor; an electric mode is adopted for replacing manual operation to conduct the gate stick gluing process, rotation of the gate stick is accurately controlled, it is avoided that water-drop-shaped condensation is left on the inner side wall of a mold shell after gluing is completed, the smoothness of the inner wall of the mold shell is ensured, and then the precision of a finished product obtained after investment casting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to a slurry control device for turbine investment casting. Background Art

[0002] Investment casting, also known as lost wax casting, includes processes such as wax pressing, wax trimming, tree formation, slurry dipping, wax melting, pouring molten metal, and post-processing. Lost wax casting uses wax to create a wax mold of the part to be cast. The wax mold is then coated with silica sol slurry. After the coating is completed, a mold shell is formed. The wax in the mold shell is then melted and removed. After the mold shell is roasted, molten metal is poured through the pouring port. After cooling, the desired part is made.

[0003] In the prior art, the process of coating the wax film with silica sol slurry is mostly done manually. However, manual coating of the silica sol slurry has the following problems: since the coating of the silica sol slurry requires repeated coating and solidification processes, the silica sol on the gate rod is uniformly rotated by manual operation during the process. However, even experienced operators may have problems with uneven gate rod rotation speed due to their own mistakes. In this case, the uneven coating of the silica sol slurry during the melting of the wax may cause cracks in the mold shell when it dries, or granular condensation may appear on the inner wall of the mold shell, directly affecting the quality of the finished product after investment casting.

[0004] In view of this, there is an urgent need for a slurry control device for turbine investment casting that can solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a slurry control device for turbine investment casting which solves the above problems.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a slurry control device for turbine investment casting, comprising:

[0007] Support platform, motor, bracket, connecting assembly, slurry control assembly and control assembly. The bracket is fixedly connected to the support platform. The motor is provided with a detachable mounting plate. The mounting plate is connected to the two side walls of the bracket through a rotating shaft bearing. The connecting assembly is fixedly connected to the motor and the slurry control assembly respectively. The control assembly is fixedly connected to the support platform, and the slurry control assembly is electrically connected to the motor.

[0008] Preferably, the slurry control assembly includes a straight barrel gate crucible, a hollow barrel sleeve and a connecting barrel sleeve. One end of the straight barrel gate crucible is detachably connected to the hollow barrel sleeve, and the other end is provided with a gate rod detachably connected to it. The gate rod is provided with a plurality of turbine wax molds integrally connected thereto. The connecting barrel sleeve is fixedly connected to the end of the hollow barrel sleeve away from the straight barrel gate crucible, and a mounting hole is provided on the side wall of the connecting barrel sleeve away from the hollow barrel sleeve, and a plurality of mounting holes are provided on the curved side wall of the connecting barrel sleeve, and the mounting holes are provided with bolts matching them.

[0009] Preferably, the straight barrel pouring crucible and the hollow barrel sleeve are matched with each other in a taper.

[0010] Preferably, the connecting assembly includes a reduction gear housing, a driving gear, a driven gear and a connecting rod, the motor shaft passes through the side wall of the reduction gear housing and is fixedly connected to the driving gear, and the motor is connected to the reduction gear housing bearing, one end of the connecting rod passes through the side wall of the reduction gear housing and is fixedly connected to the driven gear, and the other end is sleeved in the mounting hole, and the connecting rod is connected to the reduction gear housing bearing, and the driving gear is meshed with the driven gear.

[0011] Preferably, the number of teeth on the driven gear is greater than the number of teeth on the driving gear.

[0012] Preferably, the control assembly includes a console and a timer, the console is fixedly connected to the support platform, and the timer is connected to the side wall of the console.

[0013] Preferably, a T-slot is provided on the bottom wall of the mounting plate, a micro-cylinder fixedly connected to the concave bottom wall of the bracket is provided, and a slider hinged to the micro-cylinder telescopic rod is provided, and the slider is slidably connected to the T-slot.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The electric mode is used to replace the manual gluing process of the gate rod, and the rotation of the gate rod is evenly controlled to avoid cracks on the inner wall or granular condensation during the drying process of the mold shell after the gluing is completed, thereby improving the accuracy of the finished product after investment casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a slurry control device for turbine investment casting;

[0017] Figure 2 This is a schematic diagram of the structure of the connecting assembly in the present utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the interior of the reduction gearbox housing in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the dispersed structure of the slurry control assembly in the embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the right side cross-sectional structure of the mounting plate and the bracket in the second embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the main cross-sectional structure of the mounting plate and the bracket in the second embodiment of the present invention.

[0022] In the figure: 1. Support platform; 2. Motor; 20. Mounting plate; 200. T-slot; 201. Rotating shaft; 3. Bracket; 30. Micro cylinder; 31. Slider; 4. Connecting assembly; 40. Reducer housing; 41. Driving gear; 42. Driven gear; 43. Connecting rod; 5. Slurry control assembly; 50. Straight barrel gate crucible; 500. Gate rod; 501. Turbine wax film; 51. Hollow sleeve; 52. Connecting sleeve; 520. Mounting hole; 521. Bolt; 6. Control assembly; 60. Control console; 61. Timer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1

[0025] Please see the attached Figure 1-4 , a slurry control device for turbine investment casting, comprising:

[0026] Support platform 1, motor 2, bracket 3, connecting component 4, slurry control component 5 and control component 6, the bracket 3 is fixedly connected to the support platform 1, the motor 2 is provided with a detachable mounting plate 20, the mounting plate 20 is connected to the two side walls of the bracket 3 through a rotating shaft 201 bearing, the connecting component 4 is fixedly connected to the motor 2 and the slurry control component 5 respectively, the control component 6 is fixedly connected to the support platform 1, and the slurry control component 5 is electrically connected to the motor 2.

[0027] The bracket 3 is fixed on the supporting platform 1 as the bracket of the motor 2. It adopts a U-shaped structure and connects the slurry control component 5 to the motor 2 through the connecting component 4. At the same time, considering that the speed of the motor 2 is too fast relative to the slurry control component 5, it is easy for the coated silica sol slurry to be thrown off the slurry control component 5 under the action of centrifugal force. Therefore, a suitable deceleration structure is adopted in the connecting component 4 according to the actual situation to reduce the rotation rate of the slurry control component 5, and the control component 6 can control the start and stop state of the device according to time to facilitate the application of silica sol slurry or the replacement of the slurry control component 5.

[0028] Specifically, the slurry control component 5 includes a straight barrel gate crucible 50, a hollow barrel sleeve 51 and a connecting barrel sleeve 52, one end of the straight barrel gate crucible 50 is detachably connected to the hollow barrel sleeve 51, and the other end is provided with a gate rod 500 detachably connected thereto, the gate rod 500 is provided with a plurality of turbine wax molds 501 integrally connected thereto, the connecting barrel sleeve 52 is fixedly connected to the end of the hollow barrel sleeve 51 away from the straight barrel gate crucible 50, and the side wall of the connecting barrel sleeve 52 away from the hollow barrel sleeve 51 is provided with a mounting hole 520, and the curved side wall of the connecting barrel sleeve 52 is provided with a plurality of mounting holes 520, and the mounting holes 520 are provided with bolts 521 matching therewith; considering the replacement of the straight barrel gate crucible 50, the hollow barrel sleeve 51 and the connecting barrel 52 are connected through the mounting holes 520 The bolt 521 is installed. The staff can connect the gate rod 500, the straight barrel gate crucible 50 and the hollow tube sleeve 51 in advance and put them aside. When replacing, the hollow tube sleeve 51 and the connecting tube sleeve 52 can be directly disassembled. This method is not only faster, but also less likely to cause the silica sol slurry to stick to the staff's clothes during replacement. It should be noted that there are many ways to connect the gate rod 500 and the straight barrel gate crucible 50. For example, one end of the gate rod 500 is directly heated and then inserted into the straight barrel gate crucible 50. After the gate rod 500 cools down, the adhesion of the two is completed. Alternatively, the gate rod 500 is connected to the straight barrel gate crucible 50 at one end and cast into a threaded shape in advance, and then threadedly connected to the straight barrel gate crucible 50. There are many connection methods in the prior art, so they will not be repeated in this utility model.

[0029] Taking into account the fact that the straight barrel gate crucible 50 and the hollow barrel sleeve 51 are simply connected, the straight barrel gate crucible 50 may fall off the hollow barrel sleeve 51 during the application of the silica sol slurry, and it is necessary to strengthen the connection between the straight barrel gate crucible 50 and the hollow barrel sleeve 51, and the connection method should be simple. Specifically, the straight barrel gate crucible 50 and the hollow barrel sleeve 51 are tapered together; in order to avoid the straight barrel gate crucible 50 and the hollow barrel sleeve 51 from detaching, and considering that the straight barrel gate crucible 50 needs to be easy to disassemble and assemble, the straight barrel gate crucible 50 and the hollow barrel sleeve 51 are tapered together so that there is friction between the two, but the friction will not be too large.

[0030] Taking into account that the speed of the conventional motor 2 is too fast relative to the gate rod 500, it is easy for the silica sol slurry to be thrown off the gate rod 500 before it solidifies. Therefore, it is necessary to reduce the speed of the motor 2. Specifically, the connecting assembly 4 includes a reduction gear box body 40, a driving gear 41, a driven gear 42 and a connecting rod 43. The rotating shaft of the motor 2 passes through the side wall of the reduction gear box body 40 and is fixedly connected to the driving gear 42, and the motor 2 is connected to the reduction gear box body 40 with a bearing. One end of the connecting rod 43 passes through the side wall of the reduction gear box body 40 and is fixedly connected to the driven gear 42, and the other end is sleeved in the mounting hole 520, and the connecting rod 43 is connected to the reduction gear box body 40 with a bearing, and the driving gear 41 is meshed with the driven gear 42. By respectively arranging the driving gear 41 and the driven gear 42 in the reduction gear box body 40, the speed of the connecting rod 43 is reduced during the meshing rotation of the gears, thereby reducing the speed of the gate rod 500.

[0031] Specifically, the number of teeth of the driven gear 42 is greater than that of the driving gear 41 ; by controlling the number of teeth of the driven gear 42 and the driving gear 41 , the angular velocity of the driven gear 42 is changed, thereby reducing the rotation speed of the connecting rod 43 .

[0032] In order to accurately control the application and solidification of the silica sol slurry, the start and stop of the motor 2 is controlled by the console 60. Specifically, the control component 6 includes a console 60 and a timer 61. The console 60 is fixedly connected to the support platform 1, and the timer 61 is connected to the side wall of the console 60. The timer 61 is provided to facilitate the staff to accurately control the rotation and solidification time of a single silica sol slurry, thereby indirectly improving the quality of the product.

[0033] Example 2

[0034] Please see the attached Figure 5-6

[0035] Considering that in actual applications, the gate rod 500 is not always in a horizontal state, in different situations, the gate rod 500 also has the problem of needing to adjust its specific angle. Specifically, The bottom wall of the mounting plate 20 is provided with a T-slot 200, and the bottom wall of the concave surface of the bracket 3 is provided with a micro-oil cylinder 30 fixedly connected thereto, and the telescopic rod of the micro-oil cylinder 30 is provided with a slider 31 hinged thereto, and the slider 31 is slidably connected to the T-slot 200; when the inclination angle of the gate rod 500 needs to be changed, the micro-oil cylinder 30 is started, and the mounting plate 20 is pushed to rotate around the rotating shaft 201 by the micro-oil cylinder 30, thereby achieving the purpose of changing the inclination angle of the gate rod 500. In this process, since the slider 31 is slidably connected to the T-slot 200, the slider 31 will not be locked in the process of pushing the mounting plate 20 to rotate. It should be noted that the installation position of the micro-oil cylinder 30 cannot be located in the middle position of the concave surface of the bracket 3, otherwise it will not be able to smoothly push the mounting plate 20 to rotate. For example, in the utility model, the micro-oil cylinder 30 is located at the end of the bracket 3 away from the slurry control component 5 (as shown in the attached figure). Figure 6 As shown), the micro cylinder 30 can also be installed near one end of the slurry control component 5, and it is only necessary to match the slot position of the T-slot 200 with the position of the micro cylinder 30.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slurry control device for turbine investment casting, characterized in that: include: A support platform (1), a motor (2), a bracket (3), a connecting assembly (4), a slurry control assembly (5) and a control assembly (6), wherein the bracket (3) is fixedly connected to the support platform (1), the motor (2) is provided with a mounting plate (20) detachable therefrom, the mounting plate (20) is connected to two side walls of the bracket (3) via a rotating shaft (201) bearing, the connecting assembly (4) is fixedly connected to the motor (2) and the slurry control assembly (5), respectively, the control assembly (6) is fixedly connected to the support platform (1), and the slurry control assembly (5) is electrically connected to the motor (2).

2. A slurry control device for turbine investment casting according to claim 1, characterized in that: The slurry control component (5) includes a straight barrel gate crucible (50), a hollow barrel sleeve (51) and a connecting barrel sleeve (52), one end of the straight barrel gate crucible (50) is detachably connected to the hollow barrel sleeve (51), and the other end is provided with a gate rod (500) detachably connected thereto, the gate rod (500) is provided with a plurality of turbine wax molds (501) integrally connected thereto, the connecting barrel sleeve (52) is fixedly connected to the end of the hollow barrel sleeve (51) away from the straight barrel gate crucible (50), and a mounting hole (520) is provided on the side wall of the end of the connecting barrel sleeve (52) away from the hollow barrel sleeve (51), and a plurality of mounting holes (520) are provided on the curved side wall of the connecting barrel sleeve (52), and the mounting holes (520) are provided with bolts (521) matching therewith.

3. A slurry control device for turbine investment casting according to claim 2, characterized in that: The straight barrel pouring crucible (50) and the hollow barrel sleeve (51) are tapered.

4. A slurry control device for turbine investment casting according to claim 2, characterized in that: The connecting assembly (4) comprises a reduction gear housing (40), a driving gear (41), a driven gear (42) and a connecting rod (43); the rotating shaft of the motor (2) passes through the side wall of the reduction gear housing (40) and is fixedly connected to the driving gear (41); the motor (2) is connected to the reduction gear housing (40) by a bearing; one end of the connecting rod (43) passes through the side wall of the reduction gear housing (40) and is fixedly connected to the driven gear (42); the other end is sleeved in the mounting hole (520); the connecting rod (43) is connected to the bearing of the reduction gear housing (40); and the driving gear (41) is meshed with the driven gear (42).

5. A slurry control device for turbine investment casting according to claim 4, characterized in that: The number of teeth of the driven gear (42) is greater than the number of teeth of the driving gear (41).

6. The slurry control device for turbine investment casting according to claim 1, characterized in that: The control assembly (6) comprises a console (60) and a timer (61), wherein the console (60) is fixedly connected to the support platform (1), and the timer (61) is connected to a side wall of the console (60).

7. The slurry control device for turbine investment casting according to claim 1, characterized in that: A T-shaped slot (200) is provided on the bottom wall of the mounting plate (20), a micro-cylinder (30) fixedly connected to the concave bottom wall of the bracket (3) is provided, a slide block (31) hingedly connected to the micro-cylinder (30) is provided on the telescopic rod of the micro-cylinder (30), and the slide block (31) is slidably connected to the T-shaped slot (200).

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