Dewaxing and filtering device for precision investment casting of thin-wall component

Abstract

The utility model relates to the technical field of precision investment casting, and discloses a thin-wall component precision investment casting dewaxing filtering device which comprises an equipment box and a dewaxing box, a support is fixedly installed at the top end of the equipment box, a hydraulic cylinder is fixedly installed at the top end of the support, and a piston rod of the hydraulic cylinder movably penetrates through the top end of the support. A loading mechanism is arranged at the bottom end of a piston rod of the hydraulic cylinder; by arranging the loading mechanism, thin-wall components of different specifications can be placed and fixed during dewaxing through the mechanism, the use limitation of the device is reduced, and the problems that the specifications of existing thin-wall components are different, and when an existing dewaxing filtering device conducts dewaxing operation on workpieces, the workpieces are usually and directly clamped, and the work efficiency is high are solved. The problems that due to the fact that the bottom of a workpiece is not provided with a supporting structure, the stability is different when the workpieces of different specifications are clamped, the phenomenon that the workpieces fall off possibly occurs, and normal dewaxing operation is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to a dewaxing filtering device for investment casting of thin-walled components. Background Art

[0002] Investment casting is a process of making a wax model, wrapping it with multiple layers of refractory materials such as clay and binder, heating the wax to melt and flow out, thus obtaining a hollow shell formed by refractory materials, and then pouring melted metal into the hollow shell. After the metal cools, the refractory materials are broken to obtain metal parts. This process of processing metal is called investment casting, also known as investment casting or lost wax casting. Dewaxing filtration is one of the important links in the investment casting process.

[0003] The existing thin-walled components have different specifications, and the existing dewaxing filtering device usually clamps the workpiece directly when performing dewaxing operation on the workpiece. The bottom of the workpiece does not have a supporting structure, resulting in different stability when clamping workpieces of different specifications. The workpiece may fall, thereby affecting the normal dewaxing operation. For this reason, we propose a dewaxing filtering device for thin-walled component investment casting precision casting. Utility Model Content

[0004] The utility model aims to provide a dewaxing filtering device for investment casting of thin-walled components, which solves the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thin-walled component investment casting dewaxing filtration device, comprising an equipment box and a dewaxing box, wherein the dewaxing box is fixedly installed at the top of the inner wall of the equipment box, a heating pipe is fixedly installed at the top of the inner wall of the equipment box, and the heating pipe is in contact with the outer wall of the dewaxing box, a bracket is fixedly installed at the top of the equipment box, a hydraulic cylinder is fixedly installed at the top of the bracket, a piston rod of the hydraulic cylinder movably penetrates the top of the bracket, and a loading mechanism is arranged at the bottom of the piston rod of the hydraulic cylinder;

[0006] The loading mechanism includes a cover plate and a push rod. The cover plate is fixedly mounted on the bottom end of the piston rod of the hydraulic cylinder. A connecting rod is fixedly mounted on the bottom end of the cover plate. The connecting rod is inserted into an opening opened at the top end of the equipment box. A carrier plate is fixedly mounted on the bottom end of the connecting rod. A placement groove is opened at the top end of the carrier plate. A grid opening is opened at the bottom end of the inner wall of the placement groove. A fixing plate is fixedly mounted on the top end of the carrier plate. A rod hole is opened on the fixing plate. The push rod movably passes through the rod hole. A splint is fixedly mounted on one end of the push rod. A spring is surrounded by the outer wall of the push rod. The spring is fixedly connected between the back side of the splint and the front side of the fixing plate. A pulling plate is fixedly mounted on the other end of the push rod.

[0007] Preferably, the number of the connecting rods, the top rods and the fixing plates is two, and the number of the grid openings is several. By providing the grid openings, the melted wax liquid can be separated from the carrier plate through the grid openings.

[0008] Preferably, the push rod is matched with the rod hole.

[0009] Preferably, a filter screen plate is provided at the bottom end of the dewaxing box, a positioning hole is provided on the filter screen plate, a positioning rod is rotatably connected to the bottom end of the dewaxing box through a bearing, the positioning rod movably passes through the positioning hole, a plate groove is provided on the inner wall of the rod hole, a clamping plate is fixedly installed on the outer wall of the positioning rod, and the clamping plate is clamped to the bottom end of the filter screen plate.

[0010] Preferably, the positioning rod is matched with the positioning hole, and the clamping plate is matched with the plate groove. By setting the clamping plate, the clamping plate can limit and fix the filter screen plate.

[0011] Preferably, a cooling box is provided at the bottom end of the dewaxing box, and the cooling box is placed at the bottom end of the inner wall of the equipment box. A box door is hingedly connected to the front of the equipment box via a hinge.

[0012] The utility model provides a dewaxing and filtering device for investment casting of thin-walled components. The dewaxing and filtering device for investment casting of thin-walled components has the following beneficial effects:

[0013] (1) The thin-walled component investment casting dewaxing filtration device is provided with a loading mechanism, through which thin-walled components of different specifications can be placed and fixed during dewaxing, thereby reducing the limitations of the device and solving the problem that the existing thin-walled components have different specifications. When the existing dewaxing filtration device performs a dewaxing operation on the workpiece, the workpiece is usually clamped directly, and the bottom of the workpiece does not have a supporting structure, resulting in different stability when clamping workpieces of different specifications, and the workpiece may fall, thereby affecting the normal dewaxing operation.

[0014] (2) The thin-walled component investment casting dewaxing filtration device can make the melted wax liquid fall directly on the filter screen plate by setting the filter screen plate to filter it, thereby reducing the wax liquid residue inside the dewaxing box. In addition, through the cooperation of the positioning rod, positioning hole, plate groove and clamping plate, it is convenient for personnel to complete the disassembly of the filter screen plate, thereby facilitating the cleaning and replacement of the filter screen plate, thereby ensuring the normal filtration efficiency of the filter screen plate, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the bottom structure of the dewaxing box of the utility model;

[0018] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0019] Figure 5 For this utility model Figure 2 The enlarged structural diagram of the middle B part;

[0020] Figure 6 For this utility model Figure 3 Schematic diagram of the enlarged structure of part C in the middle.

[0021] In the figure: 1. Equipment box; 2. Bracket; 3. Hydraulic cylinder; 4. Loading mechanism; 5. Dewaxing box; 6. Heating tube; 7. Cooling box; 8. Filter screen; 9. Positioning rod; 10. Positioning hole; 11. Plate slot; 12. Card plate; 13. Box door; 401. Cover plate; 402. Carrier plate; 403. Connecting rod; 404. Placement slot; 405. Grid opening; 406. Fixing plate; 407. Push rod; 408. Clamp plate; 409. Spring; 410. Rod hole; 411. Pull plate. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0025] The dewaxing filtration device for investment casting of thin-walled components provided by the utility model is preferably implemented as follows Figures 1 to 6 As shown: a thin-walled component investment casting dewaxing filtration device, comprising an equipment box 1 and a dewaxing box 5, wherein the dewaxing box 5 is fixedly mounted on the top of the inner wall of the equipment box 1, a heating pipe 6 is fixedly mounted on the top of the inner wall of the equipment box 1, and the heating pipe 6 contacts the outer wall of the dewaxing box 5, a bracket 2 is fixedly mounted on the top of the equipment box 1, a hydraulic cylinder 3 is fixedly mounted on the top of the bracket 2, a piston rod of the hydraulic cylinder 3 movably penetrates the top of the bracket 2, and a loading mechanism 4 is arranged at the bottom of the piston rod of the hydraulic cylinder 3;

[0026] The loading mechanism 4 includes a cover plate 401 and a push rod 407. The cover plate 401 is fixedly installed on the bottom end of the piston rod of the hydraulic cylinder 3. A connecting rod 403 is fixedly installed on the bottom end of the cover plate 401. The connecting rod 403 is inserted into the opening opened at the top of the equipment box 1. A carrier plate 402 is fixedly installed on the bottom end of the connecting rod 403. A placement groove 404 is opened at the top of the carrier plate 402. A grid opening 405 is opened at the bottom end of the inner wall of the placement groove 404. A fixing plate 406 is fixedly installed on the top end of the carrier plate 402. A rod hole 410 is opened on the fixing plate 406. The push rod 407 movably passes through the rod hole 410. A clamping plate 408 is fixedly installed on one end of the push rod 407. A spring 409 is surrounded by the outer wall of the push rod 407. The spring 409 is fixedly connected between the back side of the clamping plate 408 and the front side of the fixing plate 406. A pulling plate 411 is fixedly installed on the other end of the push rod 407.

[0027] Specifically, the above technical solution is as follows: pull the pull plate 411, the pull plate 411 drives the pressure plate to compress the spring 409 through the push rod 407, and then the workpiece is directly placed in the placement groove 404, and the pull plate 411 is released. At this time, the pressure plate will move toward the workpiece under the reset force of the spring 409, and finally the clamping plate 408 clamps the workpiece to a limit position, and then the hydraulic cylinder 3 is started, and the hydraulic cylinder 3 drives the cover plate 401 to move downward, and the cover plate 401 drives the carrier plate 402 to move downward through the connecting rod 403, so that the carrier plate 402 passes through the opening belt opened at the top of the equipment box 1. The workpiece is moved into the equipment box 1, and then the heating tube 6 is started to dewax the workpiece. Through this mechanism, thin-walled components of different specifications can be placed and fixed during dewaxing, reducing the limitations of the device and solving the problem that the existing thin-walled components are of different specifications. When the workpiece is dewaxed, the existing dewaxing filtering device usually clamps the workpiece directly, and the bottom of the workpiece does not have a supporting structure, resulting in different stability when clamping workpieces of different specifications. The workpiece may fall, thereby affecting the normal dewaxing operation.

[0028] Furthermore, the number of connecting rods 403, top rods 407 and fixing plates 406 is two, and the number of grid openings 405 is several;

[0029] By providing the grid opening 405 , the melted wax liquid can be separated from the carrier plate 402 through the grid opening 405 .

[0030] Furthermore, the top rod 407 is matched with the rod hole 410 .

[0031] Furthermore, a cooling box 7 is provided at the bottom of the dewaxing box 5. The cooling box 7 is placed at the bottom of the inner wall of the equipment box 1. A box door 13 is hinged on the front of the equipment box 1 through a hinge. Embodiment 2

[0032] On the basis of the first embodiment, the dewaxing filtration device for investment casting of thin-walled components provided by the utility model is preferably implemented as follows: Figures 1 to 6 As shown: a filter screen plate 8 is arranged at the bottom end of the dewaxing box 5, a positioning hole 10 is opened on the filter screen plate 8, a positioning rod 9 is rotatably connected to the bottom end of the dewaxing box 5 through a bearing, the positioning rod 9 movably passes through the positioning hole 10, a plate groove 11 is opened on the inner wall of the rod hole 410, a clamping plate 12 is fixedly installed on the outer wall of the positioning rod 9, and the clamping plate 12 is clamped on the bottom end of the filter screen plate 8.

[0033] Specifically, the above technical solution is that by setting the filter mesh plate 8, the melted wax liquid can fall directly on the filter mesh plate 8 to filter it, thereby reducing the residual wax liquid inside the dewaxing box 5, and when the filter mesh plate 8 needs to be disassembled, the card plate 12 can be rotated to rotate the card plate 12 90° so that the card plate 12 and the plate slot 11 are in a parallel state. At this time, the card plate 12 no longer limits the filter mesh plate 8, and then the filter mesh plate 8 is pulled downward to complete its disassembly, thereby facilitating personnel to clean and replace the filter mesh plate 8, ensuring the normal filtering efficiency of the filter mesh plate 8, and having strong practicality.

[0034] Furthermore, the positioning rod 9 is matched with the positioning hole 10, and the clamping plate 12 is matched with the plate slot 11;

[0035] Wherein, by providing the clamping plate 12 , the clamping plate 12 can limit and fix the filter screen plate 8 .

[0036] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A thin-wall component investment casting dewaxing filtration device, comprising an equipment box (1) and a dewaxing box (5), characterized in that: The dewaxing box (5) is fixedly mounted on the top of the inner wall of the equipment box (1); a heating tube (6) is fixedly mounted on the top of the inner wall of the equipment box (1); the heating tube (6) is in contact with the outer wall of the dewaxing box (5); a bracket (2) is fixedly mounted on the top of the equipment box (1); a hydraulic cylinder (3) is fixedly mounted on the top of the bracket (2); a piston rod of the hydraulic cylinder (3) movably passes through the top of the bracket (2); and a loading mechanism (4) is provided at the bottom end of the piston rod of the hydraulic cylinder (3); The loading mechanism (4) comprises a cover plate (401) and a push rod (407). The cover plate (401) is fixedly mounted on the bottom end of the piston rod of the hydraulic cylinder (3). A connecting rod (403) is fixedly mounted on the bottom end of the cover plate (401). The connecting rod (403) is inserted into an opening formed at the top end of the equipment box (1). A carrier plate (402) is fixedly mounted on the bottom end of the connecting rod (403). A placement groove (404) is formed at the top end of the carrier plate (402). A grid opening (405) is formed at the bottom end of the inner wall of the placement groove (404). A fixing plate (406) is fixedly installed on the top of the carrier plate (402), a rod hole (410) is opened on the fixing plate (406), the push rod (407) movably passes through the rod hole (410), a clamping plate (408) is fixedly installed on one end of the push rod (407), a spring (409) is surrounded by the outer wall of the push rod (407), and the spring (409) is fixedly connected between the back side of the clamping plate (408) and the front side of the fixing plate (406), and a pulling plate (411) is fixedly installed on the other end of the push rod (407).

2. A thin-walled component investment casting dewaxing filtration device according to claim 1, characterized in that: The number of the connecting rod (403), the top rod (407) and the fixing plate (406) is two, and the number of the grid openings (405) is a plurality.

3. A thin-walled component investment casting dewaxing filtration device according to claim 1, characterized in that: The top rod (407) is matched with the rod hole (410).

4. A thin-walled component investment casting dewaxing filtration device according to claim 1, characterized in that: A filter screen plate (8) is arranged at the bottom end of the dewaxing box (5), a positioning hole (10) is provided on the filter screen plate (8), a positioning rod (9) is rotatably connected to the bottom end of the dewaxing box (5) via a bearing, the positioning rod (9) movably passes through the positioning hole (10), a plate groove (11) is provided on the inner wall of the rod hole (410), a clamping plate (12) is fixedly mounted on the outer wall of the positioning rod (9), and the clamping plate (12) is clamped to the bottom end of the filter screen plate (8).

5. A thin-walled component investment casting dewaxing filtration device according to claim 4, characterized in that: The positioning rod (9) is matched with the positioning hole (10), and the clamping plate (12) is matched with the plate groove (11).

6. A thin-wall component investment casting dewaxing filtration device according to claim 1, characterized in that: A cooling box (7) is provided at the bottom end of the dewaxing box (5), and the cooling box (7) is placed at the bottom end of the inner wall of the equipment box (1). The front of the equipment box (1) is hinged with a box door (13) via a hinge.

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