Dewaxing groove for precision investment casting shell

Abstract

The utility model relates to the related technical field of precision investment casting shells, in particular to a precision investment casting shell dewaxing groove which comprises a supporting frame, a lifting mechanism and a clamping mechanism, and the clamping mechanism comprises a fixing plate connected with one side of the bottom of the lifting mechanism; the two-way screw rod is rotationally connected with the fixing plate; the rotary table is connected with the center of the surface of the two-way screw rod; the internal thread ring is in threaded connection with the surface of the two-way screw rod; the driving plate is connected with the bottom of the internal thread ring; the arc-shaped plate is connected with the bottom of the driving plate; according to the utility model, the arc-shaped plate avoids the inclination possibility of the investment precision casting shell, and the bidirectional screw rod is used for simultaneously adjusting the position of the internal thread ring, so that the centering of the investment precision casting shell is ensured, and the problem of non-uniform heating caused by position deviation of the investment precision casting shell is avoided; the problems in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of investment casting mold shells, and in particular to a dewaxing tank for investment casting mold shells. Background Technology

[0002] Investment casting mold shells refer to molds made of fusible materials, coated with several layers of special refractory coating, dried and hardened to form a whole shell, then melted out of the shell using a heater, and then placed in a sand box, with dry sand filling around it. Finally, the mold is placed in a baking furnace for high-temperature baking. After baking, molten metal is poured into the mold or shell to obtain the casting. When dewaxing the wax inside the investment casting mold shell, a dewaxing tank is required.

[0003] The prior art can be referenced in Chinese authorized utility model patent with publication number CN214920277U. Specifically, this prior art is an improved dewaxing tank for investment casting mold shells, comprising: two support legs, each with a connecting column fixedly connected to one side; and a dewaxing box fixedly connected to one side of each connecting column. The dewaxing box contains a clamping mechanism, which includes a drive motor located on the other side of the support legs. This prior art, through the clamping mechanism, activates the drive motor, causing its output shaft to rotate and drive a rotating rod fixedly connected to the output shaft. This rotation drives a winding wheel sleeved on the outside of the rotating rod to rotate, winding and unwinding a lifting rope, thereby achieving dewaxing and clamping of the precision casting mold shell. The operation is simple and convenient, ensuring rapid clamping of the precision casting mold shell while also preventing unnecessary damage during clamping that could lead to quality problems.

[0004] The aforementioned prior art has the following shortcomings in actual operation: the contact area between the clamping mechanism and the investment casting mold shell is small, which can lead to surface damage of the investment casting mold shell due to instability of the center of gravity when it is clamped. Furthermore, adjusting the two sides separately cannot ensure that the investment casting mold shell is in the center position, which will result in uneven heating of the investment casting mold shell and affect the dewaxing efficiency of the investment casting mold shell. Utility Model Content

[0005] The purpose of this invention is to provide a dewaxing tank for investment casting mold shells, so as to solve the problems mentioned in the background art.

[0006] The technical solution adopted in this utility model is:

[0007] A dewaxing tank for investment casting mold shells includes a support frame, a lifting mechanism, and a clamping mechanism, wherein the clamping mechanism includes:

[0008] A fixing plate is connected to one side of the bottom of the lifting mechanism;

[0009] A bidirectional screw is rotatably connected to the fixed plate;

[0010] The turntable is connected to the center of the surface of the bidirectional screw;

[0011] An internally threaded ring is threaded to the surface of the bidirectional screw.

[0012] The drive plate is connected to the bottom of the internal threaded ring;

[0013] An arc-shaped plate is connected to the bottom of the driving plate.

[0014] Optionally, the clamping mechanism further includes an anti-slip pad and a sliding groove. The side of the anti-slip pad is connected to one side of the arc-shaped plate, and the sliding groove is formed on the left and right sides of the bottom of the lifting mechanism. A slider is slidably connected to the inner wall of the sliding groove.

[0015] Optionally, the clamping mechanism further includes a retaining hole and an outer tube. The retaining hole is evenly opened on the arc-shaped surface of the turntable. The top of the outer tube is at the center of the bottom of the lifting mechanism. A spring is connected to the top of the inner wall of the outer tube. A retaining rod is connected to the bottom of the spring. The side of the retaining rod is slidably connected to the inner wall of the outer tube. A control plate is connected to the lower side of the retaining rod. The bottom of the retaining rod is in contact with the bottom of the inner wall of the retaining hole.

[0016] Optionally, the support frame is connected to a dewaxing mechanism for dewaxing the casting shell. The dewaxing mechanism includes an outer barrel and a discharge pipe. The side of the outer barrel is connected to the side of the support frame, the top of the discharge pipe is connected to the bottom of the outer barrel, and a valve is connected to one side of the discharge pipe.

[0017] Optionally, the dewaxing mechanism further includes an insulation cylinder and a heating wire. The outer side of the insulation cylinder is connected to the inner wall of the outer barrel, an inner plate is connected to the side of the insulation cylinder, and the heating wire is connected to the inner wall of the insulation cylinder.

[0018] Optionally, a filter mechanism for discharging residue from the wax liquid is provided at the lower part of the inner wall of the heat insulation cylinder. The filter mechanism includes a support plate and a filter plate. The support plate is connected to the left and right sides of the lower part of the inner wall of the heat insulation cylinder, and the filter plate is attached to the support plate. The filter plate is inclined.

[0019] Optionally, the filtering mechanism further includes:

[0020] Waste discharge pipe, located below the right side of the insulation cylinder;

[0021] A movable trough is located on the top left side of the waste discharge pipe;

[0022] The blocking frame is slidably connected to the inner wall of the movable trough, and its bottom is in contact with the bottom of the inner wall of the waste discharge pipe.

[0023] Optionally, the lifting mechanism includes an extension plate and a telescopic tube. The right side of the extension plate is connected to the left side of the support frame. A motor is connected to the top of the extension plate. The output shaft of the motor is connected to a lifting screw. An internally threaded tube is threaded to the side of the lifting screw. A connecting plate is connected to the top of the internally threaded tube. A top cover is connected to the top of the connecting plate. A sealing gasket is connected to the bottom of the top cover. The bottom of the sealing gasket is in contact with the top of the insulation cylinder. The center of the bottom of the sealing gasket is connected to the top of the outer tube. One side of the bottom of the sealing gasket is connected to the top of the fixing plate. The groove is formed on the other side of the bottom of the sealing gasket.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The rotating turntable drives a bidirectional screw connected to the fixed plate to rotate. This rotation causes the internal threaded rings to move towards each other, which in turn moves the arc-shaped plates at the bottom of the plate, thus fixing the investment casting shell. In this invention, the arc-shaped plates prevent the investment casting shell from tilting, and the bidirectional screws simultaneously adjust the position of the internal threaded rings, ensuring the investment casting shell is centered. Furthermore, this design avoids uneven heating caused by positional misalignment of the investment casting shell, solving the problems in the prior art. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the external structure of this application from a top right view;

[0028] Figure 2 This is a schematic diagram of the external structure of this application from a top left view;

[0029] Figure 3 This is a schematic diagram of the right-side bottom-view cross-sectional structure of this application;

[0030] Figure 4 This is an enlarged schematic diagram of Part A of the structure of this application;

[0031] Figure 5 This is a schematic cross-sectional view of the clamping mechanism from the right-hand top view of this application.

[0032] Figure 6 This is an enlarged schematic diagram of Part B of this application.

[0033] Reference numerals: 1. Support frame;

[0034] 2. Dewaxing mechanism; 201. Outer barrel; 202. Discharge pipe; 203. Valve; 204. Insulation cylinder; 205. Heating wire; 206. Inner plate;

[0035] 3. Filtration mechanism; 301. Support plate; 302. Filter plate; 303. Waste discharge pipe; 304. Moving trough; 305. Plug;

[0036] 4. Lifting mechanism; 401. Extension plate; 402. Motor; 403. Lifting screw; 404. Internally threaded pipe; 405. Connecting plate; 406. Telescopic pipe; 407. Top cover; 408. Sealing gasket;

[0037] 5. Clamping mechanism; 501. Fixing plate; 502. Bidirectional screw; 503. Turntable; 504. Internal threaded ring; 505. Drive plate; 506. Arc plate; 507. Anti-slip pad; 508. Slider; 509. Slide groove; 510. Fixing hole; 511. Outer tube; 512. Spring; 513. Fixing rod; 514. Control plate. Detailed Implementation

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Given that the contact area between the clamping mechanism and the investment casting mold shell in the current technology is small, there is a problem that the investment casting mold shell may be damaged due to instability and tilting when clamped. Furthermore, adjusting the two sides separately cannot ensure that the investment casting mold shell is in the center position, which will lead to uneven heating of the investment casting mold shell and affect the dewaxing efficiency of the investment casting mold shell.

[0041] like Figure 1-6 As shown, this utility model embodiment provides a dewaxing tank for investment casting mold shells, including a support frame 1, a lifting mechanism 4, and a clamping mechanism 5, etc.

[0042] Among them, a fixed plate 501 is connected to one side of the bottom of the lifting mechanism 4, a bidirectional screw 502 is rotatably connected to the side of the fixed plate 501, a turntable 503 is connected to the center of the surface of the bidirectional screw 502, an internal thread ring 504 is threadedly connected to the surface of the bidirectional screw 502, a driving plate 505 is connected to the bottom of the internal thread ring 504, and an arc plate 506 is connected to the bottom of the driving plate 505.

[0043] Specifically, the clamping mechanism 5 also includes an anti-slip pad 507 and a slide groove 509.

[0044] Among them, the side of the anti-slip mat 507 is connected to one side of the arc plate 506, the slide groove 509 is opened on the left and right sides of the bottom of the lifting mechanism 4, and the inner wall of the slide groove 509 is slidably connected to the slider 508.

[0045] Specifically, the clamping mechanism 5 also includes a retaining hole 510 and an outer tube 511.

[0046] The fixing holes 510 are evenly opened on the arc-shaped surface of the turntable 503. The top of the outer tube 511 is at the center of the bottom of the lifting mechanism 4. A spring 512 is connected to the top of the inner wall of the outer tube 511. A fixing rod 513 is connected to the bottom of the spring 512. The side of the fixing rod 513 is slidably connected to the inner wall of the outer tube 511. A control plate 514 is connected to the lower side of the fixing rod 513. The bottom of the fixing rod 513 is in contact with the bottom of the inner wall of the fixing hole 510.

[0047] In use, the upward control plate 514 moves the retaining rod 513 upward, and the upward movement of the retaining rod 513 compresses the spring 512. The rotating turntable 503 drives the bidirectional screw 502, which is rotatably connected to the fixed plate 501, to rotate. The rotation of the bidirectional screw 502 drives the internal threaded ring 504 to move towards each other. The movement of the internal threaded ring 504 drives the slider 508 to move in the slide groove 509, and at the same time drives the driving plate 505 to move towards each other. The movement of the driving plate 505 drives the arc plate 506 to move towards each other until the side of the anti-slip pad 507 is in contact with the side of the investment casting shell. The control of the control plate 514 is released, and the retaining rod 513, which is slidably connected to the inner wall of the outer tube 511, is inserted into the retaining hole 510 under the action of the spring 512's own elasticity.

[0048] Furthermore, in order to dewax the casting shell, the dewaxing tank also includes a dewaxing mechanism 2.

[0049] Specifically, as shown in Figures 1-4, the support frame 1 is connected to a dewaxing mechanism 2 for dewaxing the casting shell.

[0050] The dewaxing mechanism 2 includes an outer barrel 201 and a discharge pipe 202. The side of the outer barrel 201 is connected to the side of the support frame 1, the top of the discharge pipe 202 is connected to the bottom of the outer barrel 201, and a valve 203 is connected to one side of the discharge pipe 202.

[0051] Specifically, the dewaxing mechanism 2 also includes an insulation cylinder 204 and a heating wire 205 (model OMEGA NCL-122).

[0052] The outer side of the insulation cylinder 204 is connected to the inner wall of the outer barrel 201, the side of the insulation cylinder 204 is connected to the inner plate 206, the heating wire 205 is connected to the inner wall of the insulation cylinder 204, and the heating temperature of the heating wire 205 is controlled by an external controller.

[0053] During use, the heat generated by the heating wire 205 connected to the heat preservation cylinder 204 is conducted from the inner plate 206 to the investment casting mold shell to increase its temperature and carry out the dewaxing work. When the valve 203 is turned, the melted wax liquid is discharged from the discharge pipe 202 at the bottom of the outer barrel 201.

[0054] Furthermore, in order to remove residue from the wax liquid, the dewaxing tank also includes a filtration mechanism 3.

[0055] Specifically, as shown in Figures 3-4, the filtration mechanism 3 includes a support plate 301 and a filter plate 302.

[0056] The support plate 301 is connected to the lower left and right sides of the inner wall of the insulation cylinder 204, the bottom of the filter plate 302 is attached to the top of the support plate 301, and the side of the filter plate 302 is attached to the inner wall of the insulation cylinder 204.

[0057] In a preferred embodiment, the filter plate 302 is inclined.

[0058] Specifically, the filtration mechanism 3 also includes a waste discharge pipe 303 and a moving trough 304.

[0059] Among them, the waste discharge pipe 303 is connected to the lower right side of the insulation cylinder 204, the movable groove 304 is opened on the top left side of the waste discharge pipe 303, and the inner wall of the movable groove 304 is slidably connected to the blocking frame 305, and the bottom of the blocking frame 305 is attached to the bottom of the inner wall of the waste discharge pipe 303.

[0060] In use, the filter plate 302 is placed on the surface of the support plate 301. When it is necessary to discharge the waste residue, the block frame 305 in the moving groove 304 is moved upward, and the clamping plate is placed between the top of the inner wall of the block frame 305 and the upper surface of the waste discharge pipe 303 to fix the block frame 305. The waste residue filtered by the inclined filter plate 302 is discharged from the waste discharge pipe 303.

[0061] Furthermore, in order to place and remove the investment casting mold shell, the dewaxing tank also includes a lifting mechanism 4.

[0062] Specifically, as shown in Figures 1-3, the lifting mechanism 4 includes an extension plate 401 and a telescopic tube 406.

[0063] The extension plate 401 is connected to the left side of the support frame 1 on the right side. The top of the extension plate 401 is connected to the motor 402 (model BLDC-57-30). The motor 402 is controlled by an external controller. The output shaft of the motor 402 is connected to the lifting screw 403. The side of the lifting screw 403 is threaded with an internal threaded tube 404. The top of the internal threaded tube 404 is connected to the connecting plate 405. The top of the connecting plate 405 is connected to the top cover 407. The bottom of the top cover 407 is connected to the sealing gasket 408. The bottom of the sealing gasket 408 is in contact with the top of the insulation cylinder 204. The center of the bottom of the sealing gasket 408 is connected to the top of the outer tube 511. One side of the bottom of the sealing gasket 408 is connected to the top of the fixing plate 501. The other side of the bottom of the sealing gasket 408 has a sliding groove 509.

[0064] When in use, the output shaft of the motor 402 at the top of the extension plate 401 rotates, causing the lifting screw 403 to rotate. The rotation of the lifting screw 403 causes the internal thread tube 404 to move down. The movement of the internal thread tube 404 causes the top cover 407 connected to the connecting plate 405 to move down until the bottom of the sealing gasket 408 is in contact with the top of the insulation cylinder 204, while at the same time causing the telescopic tube 406 to shorten.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dewaxing tank for investment casting mold shells, characterized in that... ,include: The support frame (1), the lifting mechanism (4), and the clamping mechanism (5) include: A fixed plate (501) is connected to one side of the bottom of the lifting mechanism (4); A bidirectional screw (502) is rotatably connected to the fixed plate (501); The turntable (503) is connected to the center of the surface of the bidirectional screw (502); An internal threaded ring (504) is threaded to the surface of the bidirectional screw (502); The drive plate (505) is connected to the bottom of the internal threaded ring (504); The arc-shaped plate (506) is connected to the bottom of the driving plate (505).

2. The dewaxing tank according to claim 1, characterized in that: The clamping mechanism (5) also includes an anti-slip pad (507) and a slide groove (509). The side of the anti-slip pad (507) is connected to one side of the arc plate (506). The slide groove (509) is opened on the left and right sides of the bottom of the lifting mechanism (4). A slider (508) is slidably connected to the inner wall of the slide groove (509).

3. The dewaxing tank according to claim 2, characterized in that: The clamping mechanism (5) further includes a retaining hole (510) and an outer tube (511). The retaining hole (510) is evenly opened on the arc surface of the turntable (503). The top of the outer tube (511) is at the center of the bottom of the lifting mechanism (4). A spring (512) is connected to the top of the inner wall of the outer tube (511). A retaining rod (513) is connected to the bottom of the spring (512). The side of the retaining rod (513) is slidably connected to the inner wall of the outer tube (511). A control plate (514) is connected to the lower side of the retaining rod (513). The bottom of the retaining rod (513) is in contact with the bottom of the inner wall of the retaining hole (510).

4. The dewaxing tank according to claim 1, characterized in that: The support frame (1) is connected to a dewaxing mechanism (2) for dewaxing the casting shell. The dewaxing mechanism (2) includes an outer barrel (201) and a discharge pipe (202). The side of the outer barrel (201) is connected to the side of the support frame (1), the top of the discharge pipe (202) is connected to the bottom of the outer barrel (201), and a valve (203) is connected to one side of the discharge pipe (202).

5. The dewaxing tank according to claim 4, characterized in that: The dewaxing mechanism (2) also includes a heat preservation cylinder (204) and a heating wire (205). The outer side of the heat preservation cylinder (204) is connected to the inner wall of the outer barrel (201). An inner plate (206) is connected to the side of the heat preservation cylinder (204). The heating wire (205) is connected to the inner wall of the heat preservation cylinder (204).

6. The dewaxing tank according to claim 5, characterized in that: The inner wall of the heat-insulating cylinder (204) is provided with a filter mechanism (3) for discharging residues in the wax liquid. The filter mechanism (3) includes a support plate (301) and a filter plate (302). The support plate (301) is connected to the left and right sides of the inner wall of the heat-insulating cylinder (204) respectively. The filter plate (302) is attached to the support plate (301) and is inclined.

7. The dewaxing tank according to claim 6, characterized in that: The filtration mechanism (3) further includes: Waste discharge pipe (303) is located below the right side of the insulation cylinder (204); A movable trough (304) is provided on the top left side of the waste discharge pipe (303); The blocking frame (305) is slidably connected to the inner wall of the moving groove (304), and its bottom is attached to the bottom of the inner wall of the waste discharge pipe (303).

8. The dewaxing tank according to claim 7, characterized in that: The lifting mechanism (4) includes an extension plate (401) and a telescopic tube (406). The right side of the extension plate (401) is connected to the left side of the support frame (1). A motor (402) is connected to the top of the extension plate (401). The output shaft of the motor (402) is connected to a lifting screw (403). An internal threaded tube (404) is threaded to the side of the lifting screw (403). A connecting plate (405) is connected to the top of the internal threaded tube (404). A top cover (407) is connected to the top of the connecting plate (405). A sealing gasket (408) is connected to the bottom of the top cover (407). The bottom of the sealing gasket (408) is in contact with the top of the insulation cylinder (204). The center of the bottom of the sealing gasket (408) is connected to the top of the outer tube (511). One side of the bottom of the sealing gasket (408) is connected to the top of the fixing plate (501). A sliding groove (509) is opened on the other side of the bottom of the sealing gasket (408).

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