Demoulding mechanism for manufacturing silicon carbide hollow pipe

Abstract

The utility model discloses a demoulding mechanism for manufacturing a silicon carbide hollow-out pipe, which relates to the technical field of silicon carbide processing and comprises a base and a hollow-out pipe main body, a processing component is arranged at the top of the base, a shaping piece is arranged on the outer side of the processing component, the hollow-out pipe main body is positioned between the processing component and the shaping piece, and the processing component comprises a cooling piece. The cooling piece comprises a mold core, a partition plate is fixedly installed on the inner side of the mold core, and a water tank is fixedly installed at one end of the mold core and fixedly installed on the top of the base. According to the demolding mechanism for manufacturing the silicon carbide hollow-out pipe, the liquid pump conveys cooling liquid in the water tank into the cavity in the mold core separated by the partition plate through the water injection pipe and the water inlet end, and the hollow-out pipe body on the outer side of the mold core is cooled through the flowing cooling liquid, so that compared with a traditional forced convection mode, the mold core is cooled through the cooling liquid; the cooling effect of the hollow pipe main body is more uniform, and the hollow pipe main body is not easy to adhere and damage during demolding.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide processing, in particular to a demoulding mechanism for manufacturing a silicon carbide hollow tube. Background Art

[0002] Silicon carbide hollow tube is a special functional ceramic material. It is mainly made of silicon carbide (SiC). The hollow structure makes the silicon carbide tube light and high-strength, so this structure is mainly used in high temperature, corrosion, wear and thermal shock environments.

[0003] The extruded hollow tube needs demoulding after cooling. The existing Chinese patent with the authorization announcement number CN218365538U discloses a silicon carbide polymer ceramic bending tube forming device. The telescopic cylinder synchronously drives the moving block fixed on the connecting rod through the fixing member to slide along the slideway, so that the tube core fixed on the moving block synchronously moves along the slideway, so that the tube core can be pulled out, which increases the forming efficiency.

[0004] The formed tube body is mounted on the mold, and the pull rod mechanism is connected to the tube body, and the demolding process is started according to the program. The lubricating mechanism coats the lubricant on the inner surface of the mold, and after the tube body is cooled, the tube body is squeezed out through the connecting rod structure to complete the demolding of the tube body. However, the existing method of cooling by forced convection is prone to uneven cooling of the tube body, which makes the tube body easy to stick when being pulled out, causing damage to the tube body. Utility Model Content

[0005] In view of the problem that the existing cooling method by forced convection may easily cause uneven cooling of the tube blank, which may cause the tube blank to stick when being pulled out, thus causing damage to the tube blank, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a demolding mechanism for manufacturing silicon carbide hollow tubes, the purpose of which is to cool the hollow tube body outside the mold core by flowing coolant, so that the cooling effect of the hollow tube body is more uniform and it is not easy to stick and be damaged during demolding.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a demoulding mechanism for manufacturing a silicon carbide hollow tube, comprising a base and a hollow tube body, a processing assembly is arranged on the top of the base, a shaping piece is arranged on the outside of the processing assembly, and the hollow tube body is located between the processing assembly and the shaping piece;

[0008] The processing assembly includes a cooling member, the cooling member includes a mold core, a partition is fixedly installed on the inner side of the mold core, a water tank is fixedly installed at one end of the mold core, and the water tank is fixedly installed on the top of the base;

[0009] A liquid pump is fixedly installed at the bottom of the water tank, and an output end of the liquid pump is connected to the water tank through a water injection pipe, and one end of the water injection pipe extends to the inner side of the water tank;

[0010] The mold core is provided with a water inlet end at one end close to the water tank and at the bottom of the partition, and the water inlet end is located at the inner side of the water tank at one end away from the partition.

[0011] As a preferred scheme of the demolding mechanism for manufacturing silicon carbide hollow tubes described in the utility model, a water outlet pipe is arranged on the side of the partition away from the water inlet end, and a reflux pipe is connected to the end of the water outlet pipe protruding from the mold core, and the reflux pipe is connected to the water injection pipe through a liquid pump.

[0012] As a preferred solution of the demolding mechanism for manufacturing silicon carbide hollow tubes described in the utility model, wherein: the processing assembly also includes a demolding part, the demolding part includes a hydraulic push rod, the hydraulic push rod is fixedly installed on the top of the water tank, the water tank output shaft is connected to a demolding ring, the bottom of the demolding ring is fixedly installed with a slide rail, and the demolding ring is movably connected to the top of the base through the slide rail.

[0013] As a preferred solution of the demoulding mechanism for manufacturing the silicon carbide hollow tube of the utility model, the demoulding ring is movably connected to one end of the mold core close to the water tank, and the inner ring diameter of the demoulding ring is the same as the outer ring diameter of the mold core.

[0014] As a preferred scheme of the demolding mechanism for manufacturing the silicon carbide hollow tube described in the utility model, wherein: the molding part includes an outer mold distributed on both sides of the mold core, the inner side of the outer mold is provided with a molding cavity, the molding cavity and the hollow tube body are adapted to each other, and the top of the outer mold is provided with an injection port, and one end of the injection port is located on the inner side of the molding cavity.

[0015] As a preferred solution of the demolding mechanism for manufacturing silicon carbide hollow tubes described in the utility model, wherein: the molding part also includes a dual-axis motor, the dual-axis motor is fixedly installed on the top of the base, the output shaft of the dual-axis motor is connected to the dual-axis screw, both ends of the dual-axis screw are connected to a threaded slide, and the outer mold is threadedly connected to the dual-axis screw through the threaded slide.

[0016] As a preferred solution of the demoulding mechanism for manufacturing the silicon carbide hollow tube described in the utility model, the total length of the hollow tube body is 700 mm, the surface is smooth without burrs, and the chamfer is C0.5.

[0017] Beneficial effects of the utility model:

[0018] 1. The liquid pump transports the coolant in the water tank through the water inlet end to the cavity in the mold core separated by the partition through the water injection pipe, and the hollow tube body outside the mold core is cooled by the flowing coolant. Compared with the traditional forced convection method, the cooling effect of the hollow tube body is more uniform, and it is not easy to stick and be damaged during demoulding.

[0019] 2. The outer mold is closed by a demoulding ring, and the raw materials are filled into the molding cavity through the injection port, so that the hollow tube body can form a hollow structure under the restriction of the mold core and the protrusions in the molding cavity, thereby making the manufacturing of silicon carbide hollow tube products fast and efficient.

[0020] 3. By controlling the change in the length of the hydraulic push rod output shaft, the demoulding ring is limited by the mold core and moves on the top of the base through the slide rail, thereby pushing the hollow tube body to separate from the mold core, thereby completing the demoulding work of the hollow tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of the demoulding mechanism for manufacturing the silicon carbide hollow tube.

[0023] Figure 2 The utility model is a schematic diagram of the explosive decomposition structure of the demoulding mechanism used for manufacturing the silicon carbide hollow tube.

[0024] Figure 3 The utility model is a schematic diagram of the processing component structure of the demoulding mechanism for manufacturing the silicon carbide hollow tube.

[0025] Figure 4 The utility model is a schematic cross-sectional structural diagram of a processing component of a demoulding mechanism for manufacturing a silicon carbide hollow tube.

[0026] Figure 5 The utility model is a schematic diagram of the exploded structure of the plastic part of the demoulding mechanism for manufacturing the silicon carbide hollow tube.

[0027] Figure 6 The utility model is a schematic diagram of the hollow tube main body structure of the demoulding mechanism for manufacturing the silicon carbide hollow tube.

[0028] Figure 7 It is a schematic diagram of specific parameters of the hollow tube body of the demoulding mechanism for manufacturing the silicon carbide hollow tube of the utility model.

[0029] Description of reference numerals:

[0030] 1. Base; 2. Hollow tube body; 3. Processing components; 31. Cooling parts; 311. Mold core; 312. Partition; 313. Water tank; 314. Liquid pump; 315. Water injection pipe; 316. Water inlet end; 317. Water outlet pipe; 318. Return pipe; 32. Demolding parts; 321. Hydraulic push rod; 322. Demolding ring; 323. Slide rail; 4. Shaping parts; 41. External mold; 42. Shaping cavity; 43. Injection port; 44. Dual-axis motor; 45. Dual-axis screw; 46. Threaded slide. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] Reference Figure 1-6 , which is the first embodiment of the utility model, provides a demoulding mechanism for manufacturing a silicon carbide hollow tube, the demoulding mechanism for manufacturing a silicon carbide hollow tube comprises a base 1 and a hollow tube body 2, a processing assembly 3 is arranged on the top of the base 1, a shaping member 4 is arranged on the outside of the processing assembly 3, the hollow tube body 2 is located between the processing assembly 3 and the shaping member 4, the processing assembly 3 comprises a cooling member 31, the cooling member 31 comprises a mold core 311, a partition 312 is fixedly installed on the inner side of the mold core 311, a water tank 313 is fixedly installed at one end of the mold core 311, the water tank 313 is fixedly installed on the top of the base 1, a liquid pump 314 is fixedly installed at the bottom of the water tank 313, the output end of the liquid pump 314 is connected to the water tank 313 through a water injection pipe 315, and one end of the water injection pipe 315 is connected to the water tank 313. It extends to the inner side of the water tank 313, the core 311 is close to one end of the water tank 313 and a water inlet end 316 is provided at the bottom of the partition 312, and the end of the water inlet end 316 away from the partition 312 is located on the inner side of the water tank 313, the base 1 provides support for the device and keeps the device level during operation, the hollow tube body 2 is a product manufactured by the device, and its function is only to facilitate understanding and has no actual effect on the structure of the device. The core 311 is hollow inside, and the core 311 is divided into two interconnected cavities by the partition 312, the liquid pump 314 can input the coolant in the water tank 313 into the cavity of the partition 312 through the water inlet end 316 through the water injection pipe 315, and the hollow tube body 2 is cooled by the flowing coolant, so that the cooling effect is more uniform.

[0034] A water outlet pipe 317 is provided on the side of the partition 312 away from the water inlet end 316. The end of the water outlet pipe 317 protruding from the mold core 311 is connected to a return pipe 318. The return pipe 318 is connected to the water injection pipe 315 through a liquid pump 314. The direction of flow of the coolant in the mold core 311 is from the water inlet end 316 to the water outlet pipe 317. The return pipe 318 can extract the coolant in the mold core 311 through the liquid pump 314, discharge it or reuse it, to achieve a closed loop, and cool the hollow tube body 2 processed on the mold core 311.

[0035] The processing assembly 3 also includes a demolding part 32, and the demolding part 32 includes a hydraulic push rod 321. The hydraulic push rod 321 is fixedly installed on the top of the water tank 313. The output shaft of the water tank 313 is connected to a demolding ring 322. The bottom of the demolding ring 322 is fixedly installed with a slide rail 323. The demolding ring 322 is movably connected to the top of the base 1 through the slide rail 323. The hydraulic push rod 321 can control the change in the extension length of the output shaft to make the demolding ring 322 move under the restriction of the slide rail 323.

[0036] The demoulding ring 322 is movably connected to one end of the mold core 311 close to the water tank 313. The inner diameter of the demoulding ring 322 is the same as the outer diameter of the mold core 311. When the demoulding ring 322 moves, the axis center is always on the same straight line as the axis center of the mold core 311.

[0037] The shaping part 4 includes an outer mold 41 distributed on both sides of the mold core 311, and a shaping cavity 42 is opened on the inner side of the outer mold 41. The shaping cavity 42 is adapted to the hollow tube body 2, and an injection port 43 is provided on the top of the outer mold 41. One end of the injection port 43 is located on the inner side of the shaping cavity 42. A protrusion adapted to and corresponding to the hole in the hollow tube body 2 is opened on the inner side of the shaping cavity 42, so that the hollow tube body 2 can be hollowed out.

[0038] The shaping part 4 also includes a dual-axis motor 44, which is fixedly installed on the top of the base 1. The output shaft of the dual-axis motor 44 is connected to the dual-axis screw 45. Both ends of the dual-axis screw 45 are connected to a threaded slide 46. The outer mold 41 is threadedly connected to the dual-axis screw 45 through the threaded slide 46. The dual-axis screw 45 runs through the entire threaded slide 46, and the threads opened on the inner sides of the mutually symmetrical threaded slides 46 are in opposite directions. When the output shaft of the dual-axis motor 44 rotates, the corresponding outer mold 41 driven by the threaded slide 46 moves in opposite directions under the restriction of the base 1, thereby completing the shaping and demolding of the device.

[0039] The total length of the hollow tube body 2 is 700 mm and the surface is smooth without burrs and chamfer C0.5. The unmarked dimensional tolerance of the hollow tube body 2 is in accordance with GB / T6414-2017DCTG-7 grade, and the geometric tolerance is in accordance with GCTG-6 grade.

[0040] When manufacturing the product, the connected biaxial screw 45 is driven to rotate by the output shaft in the biaxial screw 45, so that the biaxial screw 45 which is threadedly connected to the biaxial screw 45 and whose threads are symmetrically distributed oppositely drives the corresponding outer mold 41 to approach each other, and stops after the symmetrical outer mold 41 completes docking and the molding cavity 42 is connected to form a complete circular cavity. The mold core 311 is located inside the molding cavity 42, and the outer mold 41 is closed by the demoulding ring 322. The raw material is filled into the molding cavity 42 through the injection port 43, so that the hollow tube body 2 can form a hollow structure under the restriction of the protrusions in the mold core 311 and the molding cavity 42, thereby making the manufacturing of the silicon carbide hollow tube product fast and efficient. In this process, the liquid pump 314 transports the coolant in the water tank 313 through the water inlet end 316 to the cavity in the mold core 311 separated by the partition 312 through the water injection pipe 315, and the mold core 311 is pressed by the flowing coolant. The outer hollow tube body 2 is cooled, and the coolant circulating in the mold core 311 is extracted through the reflux pipe 318 connected to the outlet pipe 317, and discharged from the device or selected for reuse. During this process, the coolant in the mold core 311 always keeps flowing, and the direction of flow is from the water inlet end 316 to the outlet pipe 317. Compared with the traditional forced convection method, the cooling effect of the hollow tube body 2 is more uniform, and it is not easy to stick and be damaged during demoulding. After the cooling is completed, the dual-axis motor 44 is reversed to separate the outer mold 41 connected to the threaded slide 46, so that the processed hollow tube body 2 in the shaping cavity 42 is located on the mold core 311. By controlling the change in the length of the output shaft of the hydraulic push rod 321, the demolding ring 322 is restricted by the mold core 311 and moves on the top of the base 1 through the slide rail 323, thereby pushing the hollow tube body 2 to separate from the mold core 311, thereby completing the demolding of the hollow tube body 2.

[0041] The remaining structures are the same as those of Example 1.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A demoulding mechanism for manufacturing a silicon carbide hollow tube, comprising a base (1) and a hollow tube body (2), characterized in that: A processing assembly (3) is arranged on the top of the base (1), a shaping piece (4) is arranged on the outer side of the processing assembly (3), and the hollow tube body (2) is located between the processing assembly (3) and the shaping piece (4); The processing assembly (3) comprises a cooling member (31), the cooling member (31) comprises a mold core (311), a partition (312) is fixedly mounted on the inner side of the mold core (311), a water tank (313) is fixedly mounted on one end of the mold core (311), and the water tank (313) is fixedly mounted on the top of the base (1); A liquid pump (314) is fixedly installed at the bottom of the water tank (313); an output end of the liquid pump (314) is connected to the water tank (313) via a water injection pipe (315); one end of the water injection pipe (315) extends to the inner side of the water tank (313); A water inlet end (316) is provided at one end of the mold core (311) close to the water tank (313) and at the bottom of the partition (312), and an end of the water inlet end (316) away from the partition (312) is located on the inner side of the water tank (313).

2. A demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 1, characterized in that: A water outlet pipe (317) is provided on the side of the partition (312) away from the water inlet end (316); one end of the water outlet pipe (317) protruding from the mold core (311) is connected to a return pipe (318); and the return pipe (318) is connected to the water injection pipe (315) via a liquid pump (314).

3. A demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 2, characterized in that: The processing assembly (3) also includes a demoulding component (32), and the demoulding component (32) includes a hydraulic push rod (321). The hydraulic push rod (321) is fixedly installed on the top of the water tank (313). The output shaft of the water tank (313) is connected to a demoulding ring (322). The bottom of the demoulding ring (322) is fixedly installed with a slide rail (323). The demoulding ring (322) is movably connected to the top of the base (1) through the slide rail (323).

4. A demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 3, characterized in that: The demoulding ring (322) is movably connected to one end of the mold core (311) close to the water tank (313), and the inner diameter of the demoulding ring (322) is the same as the outer diameter of the mold core (311).

5. The demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 1, characterized in that: The molding part (4) comprises an outer mold (41) distributed on both sides of the mold core (311), the inner side of each of the outer molds (41) is provided with a molding cavity (42), the molding cavity (42) and the hollow tube body (2) are mutually adapted, and the top of each of the outer molds (41) is provided with an injection port (43), one end of the injection port (43) is located on the inner side of the molding cavity (42).

6. A demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 5, characterized in that: The molding part (4) further comprises a dual-axis motor (44), wherein the dual-axis motor (44) is fixedly mounted on the top of the base (1), wherein the output shaft of the dual-axis motor (44) is connected to a dual-axis screw (45), wherein both ends of the dual-axis screw (45) are connected to a threaded slide seat (46), and the outer mold (41) is threadedly connected to the dual-axis screw (45) via the threaded slide seat (46).

7. The demoulding mechanism for manufacturing a silicon carbide hollow tube according to claim 1, characterized in that: The total length of the hollow tube body (2) is 700 mm and the surface is smooth without burrs and the chamfer is C0.5.

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