Wax mold with built-in arc-shaped mold core

Abstract

The utility model belongs to the technical field of wax moulds, in particular to a wax mould with an arc-shaped core inside, which comprises a lower mould, an upper mould and a mounting seat, the lower mould is used for wax mould forming, the bottom of the mounting seat is detachably and fixedly connected with the arc-shaped core, and the arc-shaped core is movably placed in the lower mould. The upper die is detachably and fixedly connected to the top of the lower die, and a mounting opening is formed in the top of the upper die. The wax mold is reasonable in structural design, arc-shaped mold cores of corresponding specifications can be stably and hermetically mounted in a forming cavity according to the characteristics that arc-shaped cavities of different specifications are arranged in casting products, mounting convenience is improved, mounting tightness is better, wax mold forming quality is guaranteed, and after forming, the forming quality of the wax mold is improved. And the arc-shaped mold core can be repeatedly beaten, so that the arc-shaped mold core is vibrated, a formed wax mold is separated from the arc-shaped mold core, demolding is more convenient and efficient, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wax molds, in particular to a wax mold with an internal arc-shaped core. Background Art

[0002] With the continuous development of casting technology, the shapes of castings are becoming increasingly complex, and the technical requirements for casting products are becoming increasingly higher. The investment casting technology derived from traditional casting technology has continued to develop and improve, and its application is becoming increasingly widespread. The investment casting process, also known as lost wax casting, includes steps such as wax pressing, wax repair, tree formation, slurry dipping, wax melting, pouring molten metal, and post-processing. The wax pressing process is the process of using a wax injection machine to inject wax into the corresponding cavity in the wax mold to prepare the wax mold. The shape and dimensional accuracy of the wax mold lay the foundation for the molding quality of the casting. If the casting product is provided with an arc-shaped cavity feature, it is necessary to fill the corresponding arc core in the corresponding wax mold.

[0003] However, the wax mold with an internal arc-shaped core in the related art still has some shortcomings when used. It is inconvenient to install the arc-shaped core of corresponding specifications in the molding cavity according to the characteristics of the arc-shaped cavities of different specifications in the casting product, which makes the disassembly and replacement more cumbersome and troublesome, and the installation sealing is poor, which affects the quality of the wax mold. In addition, since the arc surface of the arc-shaped core fits tightly with the wax mold after molding, demolding is more troublesome and inconvenient, which reduces the efficiency of demolding. Therefore, we propose a wax mold with an internal arc-shaped core to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and to propose a wax mold with an arc-shaped core inside.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A wax mold with an arc-shaped core inside, comprising a lower mold, an upper mold and a mounting seat for wax mold forming, the bottom of the mounting seat is detachably fixedly connected to the arc-shaped core, the arc-shaped core is movably placed in the lower mold, the upper mold is detachably fixedly connected to the top of the lower mold, the top of the upper mold is provided with a mounting opening, the mounting seat is slidably sleeved in the mounting opening, the top of the mounting seat is fixedly connected to a sealing cylinder, a fixed sealing mechanism is provided between the sealing cylinder, the mounting seat, the mounting opening and the arc-shaped core, the top of the mounting seat is fixedly connected to a cover body, a knocking and vibration separation mechanism is provided between the cover body and the arc-shaped core, and two wax injection holes are provided on the top of the upper mold.

[0007] As a preferred embodiment of the present invention, an annular sealing groove is provided on the inner wall of the mounting port, and the fixed sealing mechanism includes an upper annular airbag and a lower annular airbag fixedly connected to the mounting seat, and a threaded rod rotatably connected to the top inner wall and the bottom inner wall of the sealing cylinder, the outer threaded sleeve of the threaded rod is provided with a piston, and the piston sliding sealing sleeve is provided in the sealing cylinder, an air outlet pipe is fixedly connected between the sealing cylinder and the upper annular airbag, a connecting pipe is fixedly connected between the upper annular airbag and the lower annular airbag, an upper rubber pad is fixedly connected to the outer side of the upper annular airbag, and a lower rubber pad is fixedly connected to the bottom of the lower annular airbag, and the lower rubber pad is movably abutted against the top of the arc core.

[0008] As a preferred embodiment of the present invention, two limiting rods are fixedly connected to the top inner wall and the bottom inner wall of the sealing cylinder, and the piston sliding sleeve is arranged on the outside of the two limiting rods.

[0009] As a preferred embodiment of the present invention, the top end of the threaded rod extends to above the sealing cylinder and is fixedly connected to a hand wheel.

[0010] As a preferred embodiment of the present invention, two through-holes are provided on the top of the mounting seat, and two screws are fixedly connected to the top of the arc-shaped core, and the two screws are movably inserted into the corresponding through-holes respectively. Nuts are threaded on the outer sides of the two screws, and the two nuts are movably abutted against the top of the mounting seat.

[0011] As a preferred embodiment of the present invention, a rectangular opening is opened on one side of the cover body, and the knocking and shock separation mechanism includes two return springs fixedly connected to the top of the mounting seat and a pull rod rotatably connected to the front and rear inner walls of the rectangular opening. The top ends of the two return springs are fixedly connected to the same slide, the top of the slide is fixedly connected to a guide plate, the outer sliding sleeve of the guide plate is provided with a movable plate, one end of the pull rod is fixedly connected to the mounting frame, the movable plate is rotatably connected to the front and rear inner walls of the mounting frame, the bottom of the slide is fixedly connected to two knocking rods, both of which are movably abutted against the top of the arc core, and the other end of the pull rod is fixedly connected to a handle.

[0012] As a preferred embodiment of the present invention, two through holes are provided at the bottom of the mounting seat, two striking rods are respectively slidably sleeved in the corresponding through holes, and two return springs are respectively sleeved on the outer sides of the corresponding striking rods.

[0013] As a preferred embodiment of the present invention, two support plates are fixedly connected to the top of the slide plate, and the guide plate is fixedly connected to a side where the two support plates are close to each other.

[0014] In the present invention, a wax mold mold with an arc-shaped core is described. According to the characteristics of the arc-shaped cavities of different specifications in the casting product, the arc-shaped core and the screw of the corresponding specifications are inserted into the through hole, the nut is tightened so that the two nuts are firmly abutted against the top of the mounting seat, the mounting seat is inserted into the mounting opening, and the threaded rod is rotated. The threaded rod drives the piston to move downward, so that the air in the sealing cylinder enters the air outlet pipe, the upper annular airbag, the connecting pipe and the lower annular airbag. As the air is continuously pressed in, the upper annular airbag expands and the upper rubber pad expands into the annular sealing groove until it is firmly abutted against the annular sealing groove, thereby not only firmly fixing the mounting seat and the arc-shaped core to the bottom of the upper mold, but also sealing the connection between the mounting seat and the mounting opening to prevent leakage. At the same time, as the air is pressed in, the lower annular airbag expands and the lower rubber pad is firmly abutted against the top of the arc-shaped core, thereby sealing the connection between the arc-shaped core and the mounting seat, preventing hot melt wax from entering the connection and affecting the quality of wax mold molding.

[0015] The utility model discloses a wax mold with an arc-shaped core inside. When the wax mold is cooled and formed, the wax mold can be obtained. In order to facilitate demoulding, the handle is pressed downward, and the handle drives the pull rod and the mounting frame to deflect upward. The mounting frame drives the moving plate to move upward. At the same time, the moving plate can slide horizontally on the guide plate, and the moving plate drives the slide plate and the knocking rod to move upward and stretch the reset spring. When not pressed, under the elastic force of the reset spring, the slide plate and the knocking rod move downward to knock the arc-shaped core. Repeatedly pressing the handle can repeatedly knock the arc-shaped core, so that the arc-shaped core vibrates, so that the formed wax mold and the arc-shaped core are separated, which is convenient for disassembling the upper mold and the arc-shaped core in the later stage. Then, the wax mold in the lower mold can be taken out, making demoulding more convenient and efficient.

[0016] The utility model has a reasonable structural design, which is not only conducive to the stable and sealed installation of arc cores of corresponding specifications in the molding cavity according to the characteristics of arc cavities of different specifications in the casting product, thereby improving the convenience of installation, but also has better sealing performance of the installation, thereby ensuring the quality of wax mold molding. After molding, the arc core can be repeatedly knocked to make the arc core vibrate, so as to separate the molded wax mold from the arc core, making demoulding more convenient and efficient, and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a wax mold with an internal arc-shaped core proposed by the present invention;

[0018] Figure 2 This is a cross-sectional view of a wax mold with an internal arc-shaped core proposed by the present invention;

[0019] Figure 3 for Figure 1Schematic diagram of the structure of part A;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure of part B;

[0021] Figure 5 This is a three-dimensional diagram of a knocking and vibration separation mechanism for a wax mold with an internal arc-shaped core proposed by the present invention;

[0022] Figure 6 This is a three-dimensional diagram of the arc-shaped core of a wax mold mold with an internal arc-shaped core proposed by the present invention.

[0023] In the figure: 1. Lower mold; 2. Upper mold; 3. Arc core; 4. Mounting port; 5. Mounting seat; 6. Wax injection hole; 7. Cover body; 8. Handle; 9. Rectangular port; 10. Slide plate; 11. Return spring; 12. Knocking rod; 13. Handwheel; 14. Exhaust pipe; 15. Sealing cylinder; 16. Guide plate; 17. Moving plate; 18. Nut; 19. Screw; 20. Annular sealing groove; 21. Upper rubber pad; 22. Upper annular airbag; 23. Lower rubber pad; 24. Lower annular airbag; 25. Connecting pipe; 26. Piston; 27. Limit rod; 28. Threaded rod; 29. Pull rod; 30. Mounting bracket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-6 , a wax mold mold with an arc-shaped core inside, including a lower mold 1, an upper mold 2 and a mounting seat 5 for wax mold molding, the bottom of the mounting seat 5 is detachably fixedly connected with an arc-shaped core 3, the arc-shaped core 3 is movably placed in the lower mold 1, the upper mold 2 is detachably fixedly connected to the top of the lower mold 1, and a mounting port 4 is provided on the top of the upper mold 2. The mounting seat 5 is slidably sleeved in the mounting port 4, and a sealing cylinder 15 is fixedly connected to the top of the mounting seat 5. A fixed sealing mechanism is provided between the sealing cylinder 15, the mounting seat 5, the mounting port 4 and the arc-shaped core 3. The top of the mounting seat 5 is fixedly connected with a cover body 7, and a knocking and vibration separation mechanism is provided between the cover body 7 and the arc-shaped core 3. Two wax injection holes 6 are provided on the top of the upper mold 2.

[0026] Furthermore, an annular sealing groove 20 is provided on the inner wall of the mounting port 4, and the fixed sealing mechanism includes an upper annular airbag 22 and a lower annular airbag 24 fixedly connected to the mounting seat 5, and a threaded rod 28 rotatably connected to the top inner wall and the bottom inner wall of the sealing cylinder 15, and the outer threaded sleeve of the threaded rod 28 is provided with a piston 26, and the sliding sealing sleeve of the piston 26 is arranged in the sealing cylinder 15, and the sealing cylinder 15 and the upper annular airbag 22 are fixedly connected with the air outlet pipe 14, and the upper annular airbag 22 and the lower annular airbag 24 are fixedly connected with a connecting pipe 25, the outer side of the upper annular airbag 22 is fixedly connected with an upper rubber pad 21, and the bottom of the lower annular airbag 24 is fixedly connected with a lower rubber pad 23, and the lower rubber pad 23 is movably abutted against the top of the arc core 3, and the lower rubber pad 23 and the upper rubber pad 21 are both made of high-temperature resistant rubber material, so that they have high-temperature resistant performance.

[0027] The above solution is adopted: insert the mounting seat 5 into the mounting port 4, rotate the threaded rod 28, and the threaded rod 28 drives the piston 26 to move downward to squeeze the air in the sealing cylinder 15, so that the air in the sealing cylinder 15 enters the exhaust pipe 14, the upper annular airbag 22, the connecting pipe 25 and the lower annular airbag 24. As the air is continuously pressed in, the upper annular airbag 22 expands and the upper rubber pad 21 expands into the annular sealing groove 20 until it firmly abuts against the annular sealing groove 20, thereby not only firmly fixing the mounting seat 5 and the arc core 3 to the bottom of the upper mold 2, but also sealing the connection between the mounting seat 5 and the mounting port 4 to avoid leakage, and air The pressing in causes the lower annular airbag 24 to expand and the lower rubber pad 23 to firmly abut the top of the arc core 3, thereby sealing the connection between the arc core 3 and the mounting seat 5 to prevent hot-melt wax from entering the connection and affecting the quality of the wax mold molding. When disassembling, the threaded rod 28 is rotated in the opposite direction to move the piston 26 upward and reset, and the air in the upper annular airbag 22 and the lower annular airbag 24 can be drawn into the sealing tube 15, so that the upper annular airbag 22, the upper rubber pad 21, the lower annular airbag 24 and the lower rubber pad 23 are retracted, and the mounting seat 5 can be removed from the upper mold 2, and then the nut 18 can be loosened to remove the arc core 3 from the mounting seat 5 for replacement.

[0028] Furthermore, two limit rods 27 are fixedly connected to the top inner wall and the bottom inner wall of the sealing cylinder 15, and the piston 26 is slidably sleeved on the outside of the two limit rods 27. The top end of the threaded rod 28 extends to the top of the sealing cylinder 15 and is fixedly connected to the handwheel 13, which is convenient for rotating the threaded rod 28 and at the same time helps to limit the piston 26 so that it does not rotate with the threaded rod 28.

[0029] Furthermore, two through holes are provided on the top of the mounting seat 5, and two screws 19 are fixedly connected to the top of the arc core 3. The two screws 19 are movably inserted into the corresponding through holes. The outer sides of the two screws 19 are threaded with nuts 18, and the two nuts 18 are movably abutted against the top of the mounting seat 5, which is conducive to installing and fixing the arc core 3 on the bottom of the mounting seat 5.

[0030] Furthermore, a rectangular opening 9 is opened on one side of the cover body 7, and the knocking and shock separation mechanism includes two return springs 11 fixedly connected to the top of the mounting seat 5 and a pull rod 29 rotatably connected to the front and rear inner walls of the rectangular opening 9. The top ends of the two return springs 11 are fixedly connected to the same slide 10, and the top of the slide 10 is fixedly connected to a guide plate 16, and the outer sliding sleeve of the guide plate 16 is provided with a movable plate 17. One end of the pull rod 29 is fixedly connected to a mounting frame 30, and the movable plate 17 is rotatably connected to the front and rear inner walls of the mounting frame 30. The bottom of the slide 10 is fixedly connected to two knocking rods 12, and the two knocking rods 12 are both movably abutted against the top of the arc core 3. The other end of the pull rod 29 is fixedly connected to a handle 8.

[0031] The above scheme is adopted: after cooling and molding, a wax mold can be obtained. In order to facilitate demolding, the handle 8 is pressed downward, and the handle 8 drives the pull rod 29 and the mounting bracket 30 to deflect upward, and the mounting bracket 30 drives the movable plate 17 to move upward. At the same time, the movable plate 17 can slide horizontally on the guide plate 16, and the movable plate 17 drives the slide plate 10 and the knocking rod 12 to move upward and stretch the reset spring 11. When not pressed, under the elastic force of the reset spring 11, the slide plate 10 and the knocking rod 12 move downward to knock the arc core 3. Repeatedly pressing the handle 8 can repeatedly knock the arc core 3, so that the arc core 3 vibrates, so as to separate the formed wax mold from the arc core 3, which is conducive to the later disassembly of the upper mold 2 and the arc core 3, and then the wax mold in the lower mold 1 can be taken out, making demolding more convenient and efficient.

[0032] Furthermore, two through holes are provided at the bottom of the mounting seat 5, and the two knocking rods 12 are respectively slidably mounted in the corresponding through holes, and the two return springs 11 are respectively mounted on the outer sides of the corresponding knocking rods 12, so as to facilitate the guidance of the knocking rods 12 and the return springs 11 and make their movement smoother.

[0033] Furthermore, the top of the slide plate 10 is fixedly connected to two support plates, and the guide plate 16 is fixedly connected to the side of the two support plates close to each other, which facilitates the fixed connection of the guide plate 16 to the top of the slide plate 10.

[0034] In the present invention, during operation, according to the characteristics of the arc-shaped cavities of different specifications in the casting product, the arc-shaped core 3 and the screw 19 of the corresponding specifications are inserted into the through-hole, and then the nut 18 is tightened so that the two nuts 18 are firmly abutted against the top of the mounting seat 5, and then the mounting seat 5 is inserted into the mounting opening 4, and the threaded rod 28 is rotated by the handwheel 13. Under the guidance of the two limit rods 27, the threaded rod 28 drives the piston 26 to move downward to squeeze the air in the sealing cylinder 15, so that the air in the sealing cylinder 15 enters the air outlet pipe 14, the upper annular airbag 22, the connecting pipe 25 and the lower annular airbag 24. As the air is continuously pressed in, the upper annular airbag 22 expands and the upper rubber pad 21 expands into the annular sealing groove 20 and firmly abuts against the annular sealing groove 20, thereby not only stably fixing the mounting seat 5 and the arc-shaped core 3 It is firmly fixed to the bottom of the upper mold 2, and at the same time, the connection between the mounting seat 5 and the mounting port 4 can be sealed to prevent leakage. At the same time, as the air is pressed in, the lower annular airbag 24 expands and the lower rubber pad 23 is firmly against the top of the arc core 3, thereby sealing the connection between the arc core 3 and the mounting seat 5 to prevent hot-melt wax from entering the connection and affecting the quality of the wax mold molding. When disassembling, the hand wheel 13 and the threaded rod 28 are rotated in the opposite direction to move the piston 26 upward and reset, and the air in the upper annular airbag 22 and the lower annular airbag 24 can be drawn into the sealing tube 15, so that the upper annular airbag 22, the upper rubber pad 21, the lower annular airbag 24 and the lower rubber pad 23 are retracted, and the mounting seat 5 can be removed from the upper mold 2, and then the nut 18 can be loosened to remove the arc core 3 from the mounting seat 5 for replacement.

[0035] When the upper mold 2 is buckled on the lower mold 1, the arc core 3 is located in the molding cavity of the lower mold 1, and hot molten wax liquid is injected through the wax injection hole. When the wax mold is cooled and formed, the wax mold can be obtained. In order to facilitate demoulding, the handle 8 is pressed downward, and the handle 8 drives the pull rod 29 and the mounting bracket 30 to deflect upward. The mounting bracket 30 drives the moving plate 17 to move upward. At the same time, the moving plate 17 can slide horizontally on the guide plate 16, and the moving plate 17 drives the slide plate 10 and the knocking rod 12 to move upward and stretch the return spring 11. When not pressed, under the elastic force of the return spring 11, the slide plate 10 and the knocking rod 12 move downward to knock the arc core 3. Repeatedly pressing the handle 8 can repeatedly knock the arc core 3, so that the arc core 3 vibrates, so as to separate the formed wax mold from the arc core 3, which is conducive to the later disassembly of the upper mold 2 and the arc core 3. Then the wax mold in the lower mold 1 can be taken out, making demoulding more convenient and efficient.

Claims

1. A wax mold with an arc-shaped core, characterized in that: The invention comprises a lower mold (1), an upper mold (2) and a mounting seat (5) for wax mold forming, wherein the bottom of the mounting seat (5) is detachably fixedly connected to an arc-shaped core (3), the arc-shaped core (3) is movably placed in the lower mold (1), the upper mold (2) is detachably fixedly connected to the top of the lower mold (1), the top of the upper mold (2) is provided with a mounting opening (4), the mounting seat (5) is slidably sleeved in the mounting opening (4), the top of the mounting seat (5) is fixedly connected to a sealing cylinder (15), a fixed sealing mechanism is provided between the sealing cylinder (15), the mounting seat (5), the mounting opening (4) and the arc-shaped core (3), the top of the mounting seat (5) is fixedly connected to a cover body (7), a knocking and vibration separation mechanism is provided between the cover body (7) and the arc-shaped core (3), and the top of the upper mold (2) is provided with two wax injection holes (6).

2. A wax mold with an arc-shaped core according to claim 1, characterized in that: An annular sealing groove (20) is provided on the inner wall of the mounting port (4), and the fixed sealing mechanism comprises an upper annular airbag (22) and a lower annular airbag (24) fixedly connected to the mounting seat (5), and a threaded rod (28) rotatably connected to the top inner wall and the bottom inner wall of the sealing cylinder (15), the outer thread sleeve of the threaded rod (28) is provided with a piston (26), and the sliding sealing sleeve of the piston (26) is provided in the sealing cylinder (15), an air outlet pipe (14) is fixedly connected between the sealing cylinder (15) and the upper annular airbag (22), a connecting pipe (25) is fixedly connected between the upper annular airbag (22) and the lower annular airbag (24), an upper rubber pad (21) is fixedly connected to the outer side of the upper annular airbag (22), and a lower rubber pad (23) is fixedly connected to the bottom of the lower annular airbag (24), and the lower rubber pad (23) is movably abutted against the top of the arc core (3).

3. A wax mold with an arc-shaped core according to claim 2, characterized in that: Two limiting rods (27) are fixedly connected to the top inner wall and the bottom inner wall of the sealing cylinder (15), and the piston (26) is slidably sleeved on the outside of the two limiting rods (27).

4. A wax mold with an internal arc-shaped core according to claim 2, characterized in that: The top end of the threaded rod (28) extends to the top of the sealing cylinder (15) and is fixedly connected to a hand wheel (13).

5. The wax pattern mold with an arc-shaped core according to claim 1, characterized in that: The top of the mounting seat (5) is provided with two through-holes, and the top of the arc-shaped core (3) is fixedly connected with two screws (19), and the two screws (19) are movably inserted into the corresponding through-holes. The outer sides of the two screws (19) are threadedly sleeved with nuts (18), and the two nuts (18) are movably abutted against the top of the mounting seat (5).

6. The wax pattern mold with an internal arc-shaped core according to claim 1, characterized in that: A rectangular opening (9) is provided on one side of the cover body (7), and the knocking and shock separation mechanism includes two return springs (11) fixedly connected to the top of the mounting seat (5) and a pull rod (29) rotatably connected to the front and rear inner walls of the rectangular opening (9), the top ends of the two return springs (11) are fixedly connected to the same slide plate (10), the top of the slide plate (10) is fixedly connected to a guide plate (16), the outer sliding sleeve of the guide plate (16) is provided with a movable plate (17), one end of the pull rod (29) is fixedly connected to a mounting frame (30), and the movable plate (17) is rotatably connected to the front and rear inner walls of the mounting frame (30), the bottom of the slide plate (10) is fixedly connected to two knocking rods (12), both of which are movably abutted against the top of the arc core (3), and the other end of the pull rod (29) is fixedly connected to a handle (8).

7. A wax pattern mold with an internal arc-shaped core according to claim 6, characterized in that: The bottom of the mounting seat (5) is provided with two through holes, and the two knocking rods (12) are respectively slidably sleeved in the corresponding through holes, and the two return springs (11) are respectively sleeved on the outer sides of the corresponding knocking rods (12).

8. The wax pattern mold with an internal arc-shaped core according to claim 6, characterized in that: The top of the slide plate (10) is fixedly connected to two support plates, and the guide plate (16) is fixedly connected to a side where the two support plates are close to each other.

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