A machining device for formwork casting

Abstract

The utility model discloses a processing device for formwork casting, including base, rotating platform and swing arm manipulator, swing arm manipulator includes one pitch motor module and one rotating motor module, rotating motor module is by one rotating motor, a pair of second reducers, a synchronous shaft and a pair of vertical output shafts, wherein, a pair of second reducers are fixedly installed respectively in the both ends of horizontal output shaft, and rotating motor is installed on one second reducer, the inside of horizontal output shaft is worn and is connected in the synchronous shaft, and one end of synchronous shaft is solid -connected with the output shaft of rotating motor, and rotating motor drives a pair of vertical output shafts to rotate through synchronous shaft and a pair of second reducers, the processing device for formwork casting of the utility model can effectively solve the problem that the slurry is uneven when wax tree module dips pulp, and is favorable to improve the thickness uniformity of solidified formwork.

Description

Technical Field

[0001] This utility model relates to the field of investment casting technology, specifically to a processing device for investment casting. Background Technology

[0002] The mold shell is a key component in the investment casting process used to form the cavity of the casting, and its preparation quality directly affects the forming effect and quality of the subsequent casting. In the traditional mold shell preparation process of investment casting, a wax model (or wax tree) with the same shape as the finished product is first made using fusible materials such as wax, natural resin, and plastic. Then, the wax model needs to be dipped in slurry and placed in quartz, corundum, or aluminosilicate refractory material to form a hard shell. It is then immersed in a silica colloidal solution (such as ethyl silicate hydrolysate, water glass, and silica sol) binder to complete the hardening. The above steps of dipping, attaching refractory material, and hardening need to be repeated many times until a mold shell with the required thickness is formed on the surface of the wax model. Finally, the wax model is heated to melt and flow out, and a mold shell for casting molten metal is obtained. After the metal cools, the mold shell is broken to remove the casting, completing the entire investment casting process.

[0003] However, existing mold preparation processes have significant technical flaws in the application of slurry and refractory materials to the wax mold (or wax tree). Currently, the industry mostly uses robotic arms to directly grasp the wax mold and place it into the slurry or refractory material. This method lacks an active control mechanism for the adhesion of the slurry and refractory material on the wax mold surface, easily leading to incomplete and uneven adhesion of the slurry and refractory material on the wax mold surface. Specifically, in grooves, gaps, or complex curved surfaces of the wax mold structure, the slurry is prone to local accumulation or voids due to differences in adhesion. Excess slurry cannot be completely removed by gravity dripping alone, while voids are directly exposed. At the same time, unstable slurry or refractory material cannot be effectively cleaned, resulting in voids inside the subsequently formed mold shell.

[0004] These voids can easily lead to leakage or even cracking of the mold shell during subsequent molten metal casting. This not only wastes molten metal but also causes surface defects in the casting (such as sand holes and missing material), requiring rework in severe cases. This reduces production efficiency and product yield, becoming a key bottleneck restricting the stability of the investment casting process and the quality of mold shell preparation. Therefore, there is an urgent need for mold shell preparation equipment that can solve the problems of uneven adhesion of wax pattern slurry and refractory material and avoid voids inside the mold shell, in order to meet the high standards of mold shell quality required by industrial production. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a processing device for mold shell casting. This processing device can effectively solve the problem of uneven slurry during wax tree mold impregnation and is conducive to improving the thickness uniformity of the mold shell after curing.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model provides a processing device for mold shell casting, including a base, a rotary table, and a swing arm robot; the rotary table is rotatably mounted on the base; there are four swing arms robot, which are respectively mounted on the four sides of the rotary table via mounting bases. The swing arm robot includes a pitch motor module and a rotary motor module. The pitch motor module is fixed on the mounting base and consists of a pitch motor, a first reducer and a horizontal output shaft. The pitch motor drives the horizontal output shaft to rotate through the first reducer. The rotary motor module consists of a rotary motor, a pair of second reducers, a synchronous shaft, and a pair of vertical output shafts. The pair of second reducers are fixedly installed at both ends of the horizontal output shaft, and the rotary motor is mounted on one of the second reducers. The synchronous shaft passes through the interior of the horizontal output shaft and moves independently of the horizontal output shaft, with one end of the synchronous shaft fixedly connected to the output shaft of the rotary motor. The rotary motor drives the pair of vertical output shafts to rotate through the synchronous shaft and the pair of second reducers.

[0007] Furthermore, a drive motor is provided inside the base, and the rotary table is rotated by the drive motor.

[0008] Furthermore, the mounting base consists of a pair of mounting plates fixed to the side of the rotary table, and the first reducer is fixedly mounted between the pair of mounting plates.

[0009] Furthermore, each of the vertical output shafts has a mounting head fixed at its lower end, the mounting head being used to mount the wax tree module.

[0010] Furthermore, the processing device also includes a slurry cylinder, a dripping cylinder, and a sand-floating trough, which are sequentially arranged on three sides of the base.

[0011] Furthermore, the height of the dripping cylinder is lower than that of the slurry cylinder, and a guide plate is provided between the slurry cylinder and the dripping cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The processing device for mold shell casting provided by this utility model can effectively solve the problem of uneven slurry during wax tree mold impregnation, and is conducive to improving the thickness uniformity of the mold shell after curing.

[0013] The processing device for mold shell casting provided by this utility model enables the wax tree mold to continuously complete the processes of mounting, impregnation, dripping, shell formation, and unloading through the rotation of the rotary table, thereby improving processing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a processing device for mold shell casting according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the mid-swing arm robot; Figure 3 for Figure 2 Schematic diagram of the structure of the horizontal output shaft and synchronous shaft; The components are as follows: 100, base; 200, rotary table; 210, mounting base; 211, mounting plate; 300, swing arm robot; 310, pitch motor module; 311, pitch motor; 312, first reducer; 313, horizontal output shaft; 320, rotary motor module; 321, rotary motor; 322, second reducer; 323, synchronous shaft; 324, vertical output shaft; 330, mounting head. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The directional terms used in this invention, such as upper, lower, front, back, left, right, inner, outer, upper surface, lower surface, side, top surface, bottom, front end, rear end, and end, are merely directions in the accompanying drawings and are used only to explain and illustrate this invention, not to limit the scope of protection of this invention.

[0017] In the accompanying drawings, components with identical structures are indicated by the same numerical designation. When some components are described as being "on" another component, the component may be directly placed on the other component; alternatively, an intermediate component may exist, on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted to" or "connected to" another component, both can be understood as being directly "mounted" or "connected," or as one component being indirectly "mounted to" or "connected to" another component via an intermediate component.

[0018] As described in the background section, the investment casting production process mainly includes wax pressing, wax repair, tree assembly, shell making, shell firing, pouring, shell removal, post-processing, and inspection. Currently, robotic arms are generally used to grasp the wax tree and dip it in the slurry. However, in existing technologies, the robotic arms only complete the basic actions of grasping, dipping, and removing the wax tree. Grooves, gaps, or complex curved surfaces in the wax tree structure are prone to accumulating or forming gaps due to differences in slurry adhesion, resulting in localized areas of excessively thick or thin slurry. After the wax tree is removed from the slurry, excess slurry on the surface drips off naturally by gravity, making complete removal difficult. Especially at the intersections of wax tree branches or vertical surfaces, residual slurry can form pools, which, after solidification, cause uneven shell thickness and even internal voids.

[0019] To address the aforementioned problems in the existing technology, this utility model provides a solution by redesigning a swing-arm robotic arm to replace the existing robotic arm, thereby solving the problem of uneven slurry during wax tree impregnation and improving the uniformity of the mold shell thickness after curing.

[0020] like Figure 1 As shown, one embodiment of the present invention provides a processing device for mold shell casting, including a base 100, a rotary table 200, and a swing arm robot 300.

[0021] The rotary table 200 is mounted on the base 100 and rotates via a drive motor installed within the base 100. The rotary table 200 has at least four sides, and four swing arm manipulators 300 are mounted on the four sides of the rotary table 200 via mounting bases 210. In this embodiment, the rotary table 200 is an octagonal prism.

[0022] Please see Figure 2 The swing arm robot 300 includes a pitch motor module 310 and a rotation motor module 320. The pitch motor module 310 is fixed to the mounting base 210 and consists of a pitch motor 311, a first reducer 312, and a horizontal output shaft 313. In this embodiment, the mounting base 210 consists of a pair of mounting plates 211 fixed to the side of the rotary table 200. The first reducer 312 is fixedly mounted between the pair of mounting plates 211, and the pitch motor 311 is fixed above the first reducer 312. The horizontal output shaft 313 is mounted on the first reducer 312, and the pitch motor 311 drives the horizontal output shaft 313 to rotate through the first reducer 312.

[0023] Please see Figure 2The rotary motor module 320 consists of a rotary motor 321, a pair of second reducers 322, a synchronous shaft 323, and a pair of vertical output shafts 324. The pair of second reducers 322 are respectively fixedly installed at both ends of the horizontal output shaft 313, and the rotary motor 321 is installed on one of the second reducers 322. Therefore, the pitch motor 311 drives the horizontal output shaft 313 to rotate, thereby driving the rotary motor module 320 to perform pitch motion in the vertical plane.

[0024] Please see Figure 3 Furthermore, a through hole is provided inside the horizontal output shaft 313, through which the synchronous shaft 323 passes, and it moves independently of the horizontal output shaft 313. One end of the synchronous shaft 323 is fixedly connected to the output shaft of the rotary motor 321, and the other end is engaged with the second reducer 322; a pair of vertical output shafts 324 are respectively mounted on a pair of second reducers 322. Therefore, the rotary motor 321 can drive a pair of vertical output shafts 324 to rotate synchronously around its axis through the synchronous shaft 323 and the pair of second reducers 322.

[0025] In this invention, a mounting head 330 is fixed to the lower end of each vertical output shaft 324. This mounting head 330 is used to mount the wax tree module. In this embodiment, the processing device for mold casting can mount eight sets of wax tree modules simultaneously.

[0026] In this invention, the processing device for mold shell casting also includes a slurry cylinder, a dripping cylinder, and a sand trough (not shown in the figure). The slurry cylinder, dripping cylinder, and sand trough are sequentially arranged on three sides of the base 100. The positions of these three devices constitute the three work stations of the processing device (slurry dipping, dripping, and shell formation), and the other position is the work station for mounting the wax tree mold. In the slurry dipping station, the wax tree mold is immersed in the slurry, so that its surface is adhered to the slurry. In the dripping station, the residual slurry on the wax tree mold drips into the dripping cylinder. In the shell formation station, the wax tree mold with slurry adhering to its surface is inserted into the sand in the sand trough, and the sand is adhered by the slurry, thereby forming a hard shell on the surface of the wax tree mold.

[0027] Furthermore, the height of the dripping cylinder is lower than that of the slurry cylinder, and a guide plate is provided between the slurry cylinder and the dripping cylinder. When the wax tree module after slurry impregnation moves from the slurry impregnation station to the dripping station, the guide plate catches the dripping slurry, and the height difference design guides the slurry to flow into the dripping cylinder.

[0028] This utility model discloses a processing device for mold shell casting. During the slurry impregnation operation, the wax tree module is first mounted on the mounting head 330. The pitch motor module 310 drives the rotary motor module 320 and the wax tree module to rotate upward together, making its position higher than the slurry cylinder. At the same time, the rotary table 200 rotates, bringing the swing arm robot 300, which carries the wax tree module, above the slurry cylinder. Then, the pitch motor module 310 drives the rotary motor module 320 and the wax tree module to rotate downward together, immersing the wax tree module in the slurry. Simultaneously, the rotary motor module 320 drives the wax tree module to rotate in the slurry. By rotating the wax tree module, the slurry can fully enter the grooves, gaps, or complex curved surfaces of the wax tree module, preventing accumulation or voids due to differences in slurry adhesion.

[0029] Next, the pitch motor module 310 drives the rotary motor module 320 and the wax tree module to rotate upward together to detach from the slurry, making the lower end of the wax tree module higher than the upper end. At the same time, the rotary motor module 320 continues to drive the wax tree module to rotate. In this way, during the rotation, the excess slurry attached to the wax tree module flows downward. At the same time, due to the rotation, the slurry is also promoted to flow circumferentially along the surface of the wax tree module, so that the slurry on the surface of the wax tree module is more uniform and avoids the slurry being too thick or too thin in some places. On the other hand, the rotation also promotes the excess slurry on the wax tree module to drip off more quickly, preventing the slurry from accumulating in some places.

[0030] In summary, the processing device for mold shell casting provided by this utility model, through the structural design of the swing-arm robot 300, enables the mounted wax tree mold to complete pitch and rotation movements. During slurry impregnation, it promotes the slurry to enter the grooves, gaps, or complex curved surfaces of the wax tree mold, preventing accumulation or voids due to differences in slurry adhesion. Secondly, it promotes the flow of slurry on the surface of the wax tree mold, making the slurry more uniform throughout the surface and avoiding localized areas of excessive or insufficient slurry thickness. Thirdly, it promotes the faster dripping of excess slurry from the wax tree mold, preventing localized accumulation. Through these functions, the problem of uneven slurry distribution during wax tree mold impregnation can be effectively solved, which is beneficial to improving the uniformity of the mold shell thickness after curing.

[0031] In addition, the processing device for mold shell casting provided by this utility model enables the wax tree module to continuously complete the processes of mounting, impregnation, dripping, shell formation and unloading through the rotation of the rotary table 200, thereby improving the processing efficiency.

[0032] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A processing apparatus for mold shell casting, characterized in that, It includes a base, a rotating platform, and four swing-arm robotic arms. The rotating platform is rotatably mounted on the base, and the four swing-arm robotic arms are mounted on the four sides of the rotating platform via mounting bases. The swing arm robot includes a pitch motor module and a rotary motor module. The pitch motor module is fixed on the mounting base and consists of a pitch motor, a first reducer and a horizontal output shaft. The pitch motor drives the horizontal output shaft to rotate through the first reducer. The rotary motor module consists of a rotary motor, a pair of second reducers, a synchronous shaft, and a pair of vertical output shafts. The pair of second reducers are fixedly installed at both ends of the horizontal output shaft, and the rotary motor is mounted on one of the second reducers. The synchronous shaft passes through the interior of the horizontal output shaft and moves independently of the horizontal output shaft, with one end of the synchronous shaft fixedly connected to the output shaft of the rotary motor. The rotary motor drives the pair of vertical output shafts to rotate through the synchronous shaft and the pair of second reducers.

2. The processing apparatus for mold shell casting according to claim 1, characterized in that, The base is equipped with a drive motor, and the rotary table is rotated by the drive motor.

3. The processing apparatus for mold shell casting according to claim 1, characterized in that, The mounting base consists of a pair of mounting plates fixed to the side of the rotary table, and the first reducer is fixedly mounted between the pair of mounting plates.

4. The processing apparatus for mold shell casting according to claim 1, characterized in that, Each of the vertical output shafts has a mounting head fixed to its lower end, which is used to mount the wax tree module.

5. The processing apparatus for mold shell casting according to claim 1, characterized in that, The processing device also includes a slurry cylinder, a dripping cylinder, and a sand trough, which are arranged sequentially on three sides of the base.

6. The processing apparatus for mold shell casting according to claim 5, characterized in that, The height of the dripping cylinder is lower than that of the slurry cylinder, and a guide plate is provided between the slurry cylinder and the dripping cylinder.

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