Precise forming device for investment casting wax mold

Abstract

The utility model belongs to the technical field of investment casting wax molds, and particularly relates to an investment casting wax mold precision forming device which comprises an installation frame, two first motors are fixedly installed on the top of the installation frame, and a bidirectional lead screw is fixedly installed at the output end of each first motor. Two limiting rods are fixedly mounted between the inner wall of the top and the inner wall of the bottom of the mounting frame, sliding plates are mounted on the upper side and the lower side of the outer side of a bidirectional lead screw in a threaded mode, and a rotating shaft is rotatably mounted on one side of the sliding plate on the lower portion. An upper investment casting mold and a lower investment casting mold are placed on the inner sides of the clamping frames on the upper side and the lower side correspondingly, and the two-way lead screws can drive the sliding plates on the upper side and the lower side to slide, so that the upper investment casting mold and the lower investment casting mold can be attached and abut against each other; materials can be added through the liquid inlet in the upper portion of the investment casting upper mold, and the sealing plug can be locked after the materials are added.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting wax patterns, in particular to a precision molding device for investment casting wax patterns. Background Art

[0002] Wax pattern is a commonly used casting method. Investment casting mainly consists of mold making, wax pattern making, shell making and subsequent drying, baking, pouring, solidification and other processes. The wax pattern is used to form the shape of the casting cavity. To obtain castings with high dimensional accuracy and surface finish, the wax pattern itself should have high dimensional accuracy and surface finish. However, the factors affecting the dimensional accuracy of the wax pattern in the wax pattern manufacturing process are relatively complex and there are many process parameters. Therefore, the range of variation of the dimensional accuracy of the wax pattern is relatively large.

[0003] Publication No. CN218873638U discloses a precision molding device for investment casting wax patterns, including a wax pattern molding bracket, on which a lower mold and an upper mold are mounted, and a wax inlet pipe is provided on one side of the lower mold and the upper mold. A mounting frame is mounted on the wax pattern molding bracket. By arranging structures such as a wax storage tank, a pressure box, and a U-shaped push plate, when the precision molding device for investment casting wax patterns is used, a gear disc is used to drive a quantitative wax outlet on the gear disc to continuously separate and overlap with a lower wax hole on the wax storage tank, thereby enabling equal amounts of liquid paraffin to be intermittently injected into the pressure box.

[0004] When in use, it is difficult to demould the mold with the existing device, and the staff needs to take it manually. The mold temperature is high, which makes it inconvenient for the staff to operate. Therefore, we propose a precision molding device for investment casting wax molds. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a precision molding device for investment casting wax patterns.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel is provided with an interlocking structure.

[0008] As a further improvement of the above scheme, the clamping assembly includes a threaded rod, a knob, a fixed rod, a limit block and a clamping plate. The threaded rod is threadedly installed on one side of the clamping frame, the knob is fixedly installed on the outside of one end of the threaded rod, the fixed rod is slidably installed on the front and rear sides of one side of the clamping frame, the limit block is fixedly installed on one side of the fixed rod, the clamping plate is fixedly installed on the other side of the fixed rod, and the clamping plate is rotatably installed on the other end of the threaded rod.

[0009] As a further improvement of the above scheme, the demolding assembly includes a second motor, a drive shaft, a movable shaft, a pulley, a synchronous belt and a striking block. The second motor is fixedly mounted on the inner wall of one side of the first fixed plate, the drive shaft is fixedly mounted on the output end of the second motor, the movable shaft is rotatably mounted on the inner side of the first fixed plate, the pulley is fixedly mounted on the outside of the drive shaft and the movable shaft, the synchronous belt is tensioned on the outside of the pulley, and the striking block is fixedly mounted on the outside of the drive shaft and the movable shaft.

[0010] As a further improvement of the above-mentioned solution, an investment casting upper mold is arranged between one side of the clamping frame, and an investment casting lower mold is arranged between one side of the clamping frame below. A locking block is provided on one side of the clamping plate and the clamping frame, and a locking groove is provided on one side of the investment casting upper mold and the investment casting lower mold, and the locking block is fitted with the locking groove.

[0011] As a further improvement of the above solution, a mounting groove is provided at the bottom of the first fixed plate, the drive shaft and the movable shaft are rotatably mounted on the inner side of the mounting groove, the striking block is elliptical in shape, and is made of rubber.

[0012] As a further improvement of the above solution, a through groove is provided on the top of the upper sliding plate, a liquid inlet is provided on the top of the investment casting upper mold, and a sealing plug is installed on the inner thread of the liquid inlet.

[0013] By adopting the above technical solution, the sealing plug can seal the liquid inlet, making the device more convenient for adding liquid paraffin.

[0014] As a further improvement of the above solution, a taking groove is provided on the front side and the left side of the mounting frame, and the sliding plate is in an I-shape.

[0015] By adopting the above technical solution, the device is more convenient for taking the formed mold during demoulding, and is more convenient for disassembling the investment casting upper mold and the investment casting lower mold.

[0016] As a further improvement of the above solution, a threaded hole and a limiting hole are opened on the top of the sliding plate, the bidirectional screw rod is engaged with the threaded hole, and the outer diameter of the limiting rod is the same as the inner diameter of the limiting block.

[0017] By adopting the above technical solution, the bidirectional screw can drive the sliding plate to slide in opposite directions through thread engagement after rotation.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model discloses a precision molding device for investment casting wax patterns. Through the provided clamping assembly, the investment casting upper mold and the investment casting lower mold are respectively placed on the inner sides of the clamping frames on the upper and lower sides. The bidirectional screw rod is controlled to drive the sliding plates on the upper and lower sides to slide, so that the investment casting upper mold and the investment casting lower mold can be fitted and abutted. The material can be added through the liquid inlet above the investment casting upper mold. When the material addition is completed, the sealing plug can be locked.

[0020] The utility model provides a precision molding device for investment casting wax patterns. Through the provided demoulding assembly, after the material is added to the inner sides of the investment casting upper mold and the investment casting lower mold, the driving shaft and the movable shaft can be controlled to drive the striking block to rotate, so that the striking block can strike the first fixed plate to prevent bubbles from being generated inside the wax pattern during manufacturing. The staff can control the first fixed plate to rotate around the rotating shaft so that the striking block can strike, making it more convenient and quick to demould the wax pattern formed on the inner side of the investment casting lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a precision molding device for investment casting wax patterns proposed by the utility model;

[0022] Figure 2This is a partial three-dimensional structural diagram of a precision molding device for investment casting wax patterns proposed by the present invention;

[0023] Figure 3 This is a partial three-dimensional structural diagram of a precision molding device for investment casting wax patterns proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the exploded structure of a precision molding device for investment casting wax patterns proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper part of a precision molding device for investment casting wax patterns proposed by the utility model.

[0026] In the figure: 1. Mounting frame; 2. First motor; 3. Bidirectional screw; 4. Limit rod; 5. Sliding plate; 6. Rotating shaft; 7. First fixed plate; 8. Clamping frame; 9. Ratchet; 10. Second fixed plate; 11. Electric telescopic rod; 12. Pawl; 13. Threaded rod; 14. Knob; 15. Fixed rod; 16. Limit block; 17. Clamping plate; 18. Investment casting upper mold; 19. Investment casting lower mold; 20. Second motor; 21. Drive shaft; 22. Movable shaft; 23. Pulley; 24. Synchronous belt; 25. Strike block; 26. Sealing plug; 27. Locking block. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] refer to Figure 1-5 A precision molding device for investment casting wax patterns includes a mounting frame 1, two first motors 2 are fixedly installed on the top of the mounting frame 1, a bidirectional screw 3 is fixedly installed on the output end of the first motor 2, two limit rods 4 are fixedly installed between the top inner wall and the bottom inner wall of the mounting frame 1, and sliding plates 5 are threadedly installed on the upper and lower sides of the outer sides of the bidirectional screw 3. A rotating shaft 6 is rotatably installed on one side of the lower sliding plate 5, and a first fixed plate 7 is fixedly installed between one side of the rotating shaft 6. A clamping frame 8 is fixedly installed on the top of the first fixed plate 7. The clamping frame 8 facilitates the clamping and installation of the investment casting upper mold 18 and the investment casting lower mold 19, so that the device can replace different molds.

[0029] The bottom of the upper sliding plate 5 is fixed with a clamping frame 8, the outer side of the rotating shaft 6 is fixedly installed with a ratchet 9, a second fixed plate 10 is fixedly installed on one side of the first fixed plate 7, and an electric telescopic rod 11 is fixedly installed on one side of the second fixed plate 10. A pawl 12 is fixedly installed on the output end of the electric telescopic rod 11, and the pawl 12 can lock the ratchet 9 so that the pawl 12 can be controlled to disengage from the ratchet 9 after the mold of the device is formed, so that personnel can rotate the first fixed plate 7 around the rotating shaft 6, so that the lower mold 19 of the investment casting can be set downward, so that the mold can be knocked out by the striking block 25, making it more convenient for personnel to take the wax mold after demolding; the pawl 12 and the ratchet 9 are engaged, and a clamping assembly is provided above the clamping frame 8, and a demolding assembly is provided above the first fixed plate 7.

[0030] In this embodiment, the clamping assembly includes a threaded rod 13, a knob 14, a fixed rod 15, a limit block 16 and a clamping plate 17. The threaded rod 13 is threadedly installed on one side of the clamping frame 8, the knob 14 is fixedly installed on the outside of one end of the threaded rod 13, the fixed rod 15 is slidably installed on the front and rear sides of one side of the clamping frame 8, the limit block 16 is fixedly installed on one side of the fixed rod 15, the clamping plate 17 is fixedly installed on the other side of the fixed rod 15, and the clamping plate 17 is rotatably installed on the other end of the threaded rod 13.

[0031] In this embodiment, the demolding assembly includes a second motor 20, a drive shaft 21, a movable shaft 22, a pulley 23, a synchronous belt 24 and a striking block 25. The second motor 20 is fixedly mounted on the inner wall of one side of the first fixed plate 7, the drive shaft 21 is fixedly mounted on the output end of the second motor 20, the movable shaft 22 is rotatably mounted on the inner side of the first fixed plate 7, the pulley 23 is fixedly mounted on the outer side of the drive shaft 21 and the movable shaft 22, the synchronous belt 24 is tensioned on the outer side of the pulley 23, and the striking block 25 is fixedly mounted on the outer side of the drive shaft 21 and the movable shaft 22.

[0032] In this embodiment, an investment casting upper mold 18 is arranged between one side of the clamping frame 8, and an investment casting lower mold 19 is arranged between one side of the lower clamping frame 8. A locking block 27 is provided on one side of the clamping plate 17 and the clamping frame 8. A locking groove is provided on one side of the investment casting upper mold 18 and the investment casting lower mold 19, and the locking block 27 is fitted with the locking groove; the investment casting upper mold 18 and the investment casting lower mold 19 can be clamped by the locking block during the clamping process, so that the investment casting upper mold 18 and the investment casting lower mold 19 are not easily separated during the demolding process.

[0033] In this embodiment, a mounting groove is provided at the bottom of the first fixed plate 7, and the driving shaft 21 and the movable shaft 22 are rotatably mounted on the inner side of the mounting groove. The striking block 25 is elliptical in shape and is made of rubber.

[0034] In this embodiment, a through groove is provided on the top of the upper sliding plate 5, and a liquid inlet is provided on the top of the investment casting upper mold 18. A sealing plug 26 is installed on the inner thread of the liquid inlet; this makes it easy to add liquid paraffin, and the sealing can be performed through the sealing plug 26 after the addition is completed.

[0035] In this embodiment, the front and left sides of the mounting frame 1 are provided with taking-in grooves, and the sliding plate 5 is in the shape of an I-beam, so that the wax mold can be demoulded and taken out more conveniently and quickly after molding.

[0036] In this embodiment, a threaded hole and a limit hole are provided on the top of the sliding plate 5, the bidirectional screw rod 3 is engaged with the threaded hole, and the outer diameter of the limit rod 4 is the same as the inner diameter of the limit block; the bidirectional screw rod 3 can drive the sliding plate 5 to move in opposite directions, and the limit rod 4 makes the sliding plate 5 more stable during the movement.

[0037] The specific operation is to place the investment casting upper mold 18 and the investment casting lower mold 19 on the inner sides of the clamping frames 8 on the upper and lower sides respectively, control the knob 14 to drive the threaded rod 13 to rotate, so that the threaded rod 13 drives the clamping plate 17 to clamp and fix it, control the first motor 2 to drive the bidirectional screw rod 3 to rotate, so that the bidirectional screw rod 3 can drive the sliding plates 5 on the upper and lower sides to slide, so that the investment casting upper mold 18 and the investment casting lower mold 19 can be fitted and abutted, and the sealing plug 26 can be opened when the wax mold is manufactured so that the material can be added through the liquid inlet above the investment casting upper mold 18. When the material is added, the sealing plug 26 can be opened. The locking mechanism is configured to lock the upper and lower molds 18 and 19 of the investment casting, and the material is added to the inner side of the investment casting upper mold 18 and the investment casting lower mold 19, so that the driving shaft 21 and the movable shaft 22 can be controlled to drive the striking block 25 to rotate, so that the striking block 25 can strike the first fixed plate 7 to prevent bubbles from being generated inside the wax mold during manufacturing. After molding, the bidirectional screw 3 can be controlled to drive the investment casting upper mold 18 and the investment casting lower mold 19 to separate, so that the electric telescopic rod 11 drives the pawl 12 to disengage from the ratchet 9, so that the staff can control the first fixed plate 7 to rotate around the rotating shaft 6, so that the striking block 25 can strike, making it more convenient and quick to demold the wax mold formed on the inner side of the investment casting lower mold 19.

[0038] The above is a detailed introduction to the investment casting wax pattern precision forming device provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A precision molding device for investment casting wax patterns, characterized in that: include: A mounting frame (1) is provided, wherein two first motors (2) are fixedly mounted on the top of the mounting frame (1), a bidirectional screw rod (3) is fixedly mounted on the output end of the first motor (2), two limiting rods (4) are fixedly mounted between the top inner wall and the bottom inner wall of the mounting frame (1), a sliding plate (5) is threadedly mounted on the upper and lower sides of the outer side of the bidirectional screw rod (3), a rotating shaft (6) is rotatably mounted on one side of the sliding plate (5), a first fixed plate (7) is fixedly mounted between one side of the rotating shaft (6), and a clamping frame is fixedly mounted on the top of the first fixed plate (7) (8), a clamping frame (8) is fixed to the bottom of the sliding plate (5) above, a ratchet (9) is fixedly installed on the outer side of the rotating shaft (6), a second fixed plate (10) is fixedly installed on one side of the first fixed plate (7), an electric telescopic rod (11) is fixedly installed on one side of the second fixed plate (10), a pawl (12) is fixedly installed on the output end of the electric telescopic rod (11), the pawl (12) and the ratchet (9) are engaged with each other, a clamping assembly is provided above the clamping frame (8), and a demoulding assembly is provided above the first fixed plate (7).

2. The device for precision molding wax patterns for investment casting according to claim 1, characterized in that: The clamping assembly comprises a threaded rod (13), a knob (14), a fixing rod (15), a limit block (16) and a clamping plate (17), wherein the threaded rod (13) is threadedly mounted on one side of the clamping frame (8), the knob (14) is fixedly mounted on the outside of one end of the threaded rod (13), the fixing rod (15) is slidably mounted on the front and rear sides of one side of the clamping frame (8), the limit block (16) is fixedly mounted on one side of the fixing rod (15), the clamping plate (17) is fixedly mounted on the other side of the fixing rod (15), and the clamping plate (17) is rotatably mounted on the other end of the threaded rod (13).

3. The device for precision molding of investment casting wax patterns according to claim 1, characterized in that: The demoulding assembly comprises a second motor (20), a driving shaft (21), a movable shaft (22), a pulley (23), a synchronous belt (24) and a striking block (25), wherein the second motor (20) is fixedly mounted on an inner wall of one side of the first fixed plate (7), the driving shaft (21) is fixedly mounted on the output end of the second motor (20), the movable shaft (22) is rotatably mounted on the inner side of the first fixed plate (7), the pulley (23) is fixedly mounted on the outer sides of the driving shaft (21) and the movable shaft (22), the synchronous belt (24) is tensioned and arranged on the outer side of the pulley (23), and the striking block (25) is fixedly mounted on the outer sides of the driving shaft (21) and the movable shaft (22).

4. The device for precision molding wax patterns for investment casting according to claim 2, characterized in that: An investment casting upper mold (18) is provided between one side of the clamping frame (8), and an investment casting lower mold (19) is provided between one side of the clamping frame (8) below. A locking block (27) is provided on one side of the clamping plate (17) and the clamping frame (8). A locking groove is provided on one side of the investment casting upper mold (18) and the investment casting lower mold (19), and the locking block (27) is fitted with the locking groove.

5. The device for precision molding wax patterns for investment casting according to claim 3, characterized in that: A mounting groove is provided at the bottom of the first fixing plate (7), and the driving shaft (21) and the movable shaft (22) are rotatably mounted on the inner side of the mounting groove. The striking block (25) is elliptical in shape and is made of rubber.

6. The device for precision molding wax patterns for investment casting according to claim 4, characterized in that: A through groove is provided on the top of the upper sliding plate (5), and a liquid inlet is provided on the top of the investment casting upper mold (18). A sealing plug (26) is installed on the inner thread of the liquid inlet.

7. The device for precision molding wax patterns for investment casting according to claim 1, characterized in that: The front and left sides of the mounting frame (1) are provided with taking slots, and the sliding plate (5) is in the shape of an I-beam.

8. The device for precision molding wax patterns for investment casting according to claim 1, characterized in that: A threaded hole and a limiting hole are provided on the top of the sliding plate (5), the bidirectional screw rod (3) is engaged with the threaded hole, and the outer diameter of the limiting rod (4) is the same as the inner diameter of the limiting block.

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