Sand core structure of blade steel casting

Abstract

The utility model discloses a sand core structure of a blade steel casting, which comprises a mounting frame, a lower die is mounted below the mounting frame, an upper die is mounted above the lower die, mounting racks are fixedly mounted at the left end and the right end of the mounting frame, first rotating rods are rotatably connected to the inner side walls of the mounting racks, and second rotating rods are rotatably connected to the inner side walls of the mounting racks. And the first rotating rods are symmetrically arranged up and down relative to the horizontal central axis of the mounting frame, synchronous belt wheels are fixedly mounted on rod bodies of the first rotating rods, and belts are connected to the outer sides of the synchronous belt wheels in a sleeving mode. According to the sand core structure of the blade steel casting, in the casting process, fixing of the sand core is enhanced, the sand core is prevented from falling off or moving, then the sand core is reinforced, deformation and vibration of blades in the blade Aizhou machining and using process can be reduced, the stability and reliability of the blades are improved, meanwhile, adhesion or residues between the blades can be avoided, and the service life of the blades is prolonged. And meanwhile, the casting period is shortened, and the production speed of the blade is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of blade steel castings, in particular to a sand core structure of a blade steel casting. Background Art

[0002] Blade castings are a type of cast steel used to manufacture blades, usually used in aero engines, steam turbines and other fields. They have the characteristics of high strength, wear resistance and corrosion resistance, and can withstand working conditions under high temperature and high pressure environments;

[0003] When processing the blade cast steel, the sand core may fall off due to loose fixation or poor quality of the sand core, which may cause voids or defects inside the blade, thus affecting the quality and performance of the blade. When the sand core needs to be removed after the blade casting is completed, the sand core will remain inside the blade, thus affecting the quality and performance of the blade. At the same time, when the blade is demolded, the blade may be deformed due to rapid temperature changes, which may cause the blade to crack or deform, thus affecting the geometric shape and dimensional accuracy of the blade. Utility Model Content

[0004] The purpose of the utility model is to provide a sand core structure for blade steel castings to solve the problem raised in the above-mentioned background technology that the sand core is not firmly fixed or the quality of the sand core is poor, resulting in the sand core falling off, which in turn causes cavities or defects inside the blade, thereby affecting the quality and performance of the blade, and at the same time causing the sand core to remain inside the blade, thereby affecting the quality and performance of the blade. When the blade is demolded, the blade may be deformed due to excessively rapid temperature changes, which in turn causes the blade to crack or deform, thereby affecting the geometry and dimensional accuracy of the blade.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the sand core structure of the blade steel casting comprises: a mounting frame, a lower mold is mounted below the mounting frame, an upper mold is mounted above the lower mold, and mounting frames are fixedly mounted on both ends of the mounting frame; further comprising: a first rotating rod, the first rotating rod is rotatably connected to the inner side wall of the mounting frame, and the first rotating rod is symmetrically arranged about the horizontal center axis of the mounting frame, a synchronous pulley is fixedly mounted on the rod body of the first rotating rod, and a belt is sleeved and connected to the outer side of the synchronous pulley, the side walls of the left and right ends of the mounting frame are slidably connected with slide grooves, and the slide grooves are symmetrically arranged about the horizontal center axis of the mounting frame, and the inner side walls of the slide grooves are fixedly connected to the lower mold and the upper mold, a first motor is fixedly mounted on the side wall of the mounting frame, and the output end of the first motor is fixedly connected to the first rotating rod;

[0006] A two-way threaded rod, the two-way threaded rod is rotatably connected to the inside of the mounting frame, and the left and right ends of the rod body of the two-way threaded rod are slidably connected with internal threaded sleeves, a second motor is fixedly installed at the right end of the bottom of the mounting frame, and the output end of the second motor is fixedly connected to the right end rod body of the two-way threaded rod, an articulated rod is rotatably connected to the upper end member of the internal threaded sleeve, and a guide rod is rotatably connected to the upper end rod body of the articulated rod, and the upper end rod body of the guide rod extends through and extends to the inside of the lower mold, and a guide plate is installed inside the lower mold;

[0007] The fan is fixedly installed on the inner top of the upper mold, and the fan is symmetrically arranged left and right about the vertical center axis of the upper mold, and the fan is symmetrically arranged front and back about the vertical center axis of the upper mold, the second rotating rod is rotatably installed at the front and rear ends inside the upper mold, and baffles are fixedly installed at the left and right ends of the second rotating rod body, and a gear is fixedly installed at the middle position of the second rotating rod body, and electric push rods are fixedly installed at the front and rear ends of the inner top of the upper mold, and a rack is fixedly installed at the output end of the electric push rod.

[0008] It is further configured as follows: the first rotating rod is configured in a "Z"-shaped structure, and the first rotating rod is slidably connected to the inside of the slide groove, and the first rotating rod drives the slide groove to form a sliding structure on the side wall of the mounting frame, and the slide groove drives the lower mold and the upper mold to form a lifting structure.

[0009] It is further configured as follows: the inner side wall of the internal thread sleeve is threadably connected to the bidirectional threaded rod, and the sliding direction of the left internal thread sleeve in the bidirectional threaded rod is opposite to the sliding direction of the right internal thread sleeve in the bidirectional threaded rod.

[0010] It is further configured as follows: the internal thread sleeve drives the guide rod through the hinge rod to form a lifting structure, and the guide rod is arranged in an inclined state, and the upper end rod body of the guide rod is arranged in a corresponding state with the guide plate.

[0011] It is further configured as follows: the gear and the rack are meshed with each other, and the gear drives the baffle to form a flip structure.

[0012] It is further configured as follows: the fan is arranged in a corresponding state to the vent of the upper mold, the diameter of the vent is consistent with that of the baffle, and the baffle is fitted with the vent.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the sand core structure of the blade steel casting strengthens the fixation of the sand core during the casting process to prevent the sand core from falling off or shifting, and the reinforced sand core can reduce the deformation and vibration of the blade during processing and use, thereby improving the stability and reliability of the blade, and at the same time, it can also avoid adhesion or residue between blades, reduce the generation of defects, and at the same time shorten the casting cycle, speed up the production speed of the blade, and thus improve the production efficiency, which is helpful to improve the efficiency and quality of the blade casting process, and further can effectively reduce the situation that the sand core remains inside the blade, and further can make the sand core removal process smoother and more efficient, and at the same time avoid damage to the blade surface or internal structure, thereby ensuring the integrity and quality of the blade;

[0014] A lower mold, an upper mold, a mounting frame, a first rotating rod synchronous pulley, a belt, a slide groove and a first motor are provided, and the first rotating rod is driven to slide inside the slide groove by the output end of the first motor, so that the first rotating rod drives the slide groove to slide on the side wall of the mounting frame, and then the synchronous pulley on the rod body of the first rotating rod is connected together through the belt sleeve, so that the first rotating rod on the mounting frame body rotates synchronously, so that the slide groove drives the lower mold and the upper mold to rise and fall respectively, so that the lower mold and the upper mold are close to each other or separated in opposite directions, so that the fixation of the sand core is strengthened during the casting process to prevent the sand core from falling off or displacement, and then the reinforcement of the sand core can reduce the deformation and vibration of the blade during processing and use, thereby improving the stability and reliability of the blade;

[0015] A bidirectional threaded rod, an internally threaded sleeve, a second motor, a hinged rod, a guide rod and a guide plate are provided. The bidirectional threaded rod is driven to rotate by the output end of the second motor, and then the inner side wall of the internally threaded sleeve is connected to the bidirectional threaded rod by threads, so that the internally threaded sleeve on the rod body of the bidirectional threaded rod slides in opposite directions, and at the same time, the hinged rod is rotatably connected with the internally threaded sleeve and the guide rod at an inclined angle, so that the upper end rod body of the guide rod slides inside the lower mold, and at the same time, the guide rod and the guide plate are arranged in a corresponding state, so that the guide rod drives the guide plate to rise and fall, so that the device can avoid adhesion or residue between blades, reduce the generation of defects, and at the same time shorten the casting cycle, speed up the production speed of the blades, and thus improve the production efficiency, thereby helping to improve the efficiency and quality of the blade casting process;

[0016] A fan, a second rotating rod, a baffle, a gear, an electric push rod and a rack are provided. The output end of the electric push rod drives the sliding of the rack, and then the rack and the gear are meshed with each other, so that the gear drives the second rotating rod to rotate, and at the same time, the second rotating rod drives the baffle to flip in the vent of the upper mold. Since the baffle and the vent are arranged in a fitted state, the baffle is flipped to a vertical state. At the same time, the fan is started, and the wind generated by the fan is blown through the vent to the completed blades, which can effectively reduce the situation where the sand core remains inside the blade, and thus make the sand core removal process smoother and more efficient, while also avoiding damage to the blade surface or internal structure, thereby ensuring the integrity and quality of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 2 It is a side view structural diagram of the installation frame of the utility model;

[0019] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0020] Figure 4 It is a schematic diagram of the side sectional structure of the upper mold of the utility model.

[0021] In the figure: 1. mounting frame; 2. lower mold; 3. upper mold; 4. mounting frame; 5. first rotating rod; 6. synchronous pulley; 7. belt; 8. slideway; 9. first motor; 10. bidirectional threaded rod; 11. internal threaded sleeve; 12. second motor; 13. hinged rod; 14. guide rod; 15. guide plate; 16. fan; 17. second rotating rod; 18. baffle; 19. gear; 20. electric push rod; 21. rack. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Embodiment 1: Figure 1-4 As shown: this embodiment includes a mounting frame 1, a lower mold 2, an upper mold 34, a mounting frame 4, a first rotating rod 5, a synchronous pulley 6, a belt 7, a slide 8, a first motor 9, a bidirectional threaded rod 10, an internal threaded sleeve 11, a second motor 12, a hinged rod 13, a guide rod 14, a guide plate 15, a fan 16, a second rotating rod 17, a baffle 18, a gear 19, an electric push rod 20, and a rack 21; first, as shown in the attached Figure 1 and attached Figure 2As shown in , when the blade is cast, the first motor 9 is started, and then the first rotating rod 5 is arranged in a "Z"-shaped structure, so that the first motor 9 drives the first rotating rod 5 to rotate on the inner side wall of the mounting frame 4, and at the same time, the synchronous pulley 6 at the upper end of the mounting frame 4 and the synchronous pulley 6 at the lower end of the mounting frame 4 are connected together through the belt 7 sleeve, so that the first rotating rods 5 at the upper and lower ends of the inner side wall of the mounting frame 4 rotate synchronously, so that the first rotating rod 5 rotates inside the slide groove 8, and at the same time, the first rotating rod 5 drives the slide groove 8 to slide on the side wall of the mounting frame 1, and then the slide groove 8 is fixedly connected with the lower mold 2 and the upper mold 3, so that the slide groove 8 drives the lower mold 2 and the upper mold 3 to approach each other, so that the lower mold 2 and the upper mold 3 are fitted and connected together, and then the blade is cast, which makes it more stable when the blade is processed;

[0024] As attached Figure 1 As shown in, after the blade casting is completed, the first motor 9 can be started again, so that the first rotating rod 5 drives the lower mold 2 and the upper mold 3 to slide in opposite directions through the slide groove 8, thereby making the upper mold 3 rise and the lower mold 2 fall. At the same time, when the lower mold 2 is descending, the guide rod 14 slides inside the lower mold 2. At the same time, after the lower mold 2 slides to the specified position, the second motor 12 can be started, so that the output end of the second motor 12 drives the bidirectional threaded rod 10 to rotate, and then the inner side wall of the internal threaded sleeve block 11 and the bidirectional threaded rod 10 are threaded. The inner thread sleeve 11 on the rod body of the bidirectional threaded rod 10 slides in opposite directions, and at the same time, the hinge rod 13 is in an inclined state and is rotatably connected with the top of the inner thread sleeve 11 and the bottom of the guide rod 14, so that the inner thread sleeve 11 drives the guide rod 14 to rise and fall through the hinge rod 13, and at the same time, the guide rod 14 slides again inside the lower mold 2, and the guide rod 14 and the guide plate 15 are arranged in a corresponding state, so that the guide rod 14 drives the guide plate 15 to slide inside the lower mold 2, and the blades inside the lower mold 2 are separated;

[0025] As attached Figure 1 , Attachment Figure 2 and attached Figure 4As shown in, after the blades inside the lower mold 2 are completely disengaged, the fan 16 can be started to generate wind force, and then the electric push rod 20 can be started, so that the output end of the electric push rod 20 drives the rack 21 to slide, and the rack 21 is meshed with the gear 19, so that the gear 19 drives the second rotating rod 17 to rotate, so that the second rotating rod 17 drives the baffle 18 to flip, and then the diameter of the baffle 18 is consistent with the diameter of the vent inside the upper mold 3, and the baffle 18 fits with the vent, so that the second rotating rod 17 drives the baffle 18 to flip to a vertical state, so that the vent inside the upper mold 3 is in an open state, and the wind force generated by the fan 16 removes the sand core remaining on the blade, thereby ensuring the completion and quality of the blade.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The sand core structure of blade steel castings includes: The mounting frame (1) comprises a lower mold (2) mounted below the mounting frame (1), an upper mold (3) mounted above the lower mold (2), and mounting frames (4) fixedly mounted on both left and right ends of the mounting frame (1); the mounting frame (1) further comprises: a first rotating rod (5), the first rotating rod (5) being rotatably connected to the inner side wall of the mounting frame (4), and the first rotating rod (5) being symmetrically arranged with respect to the horizontal center axis of the mounting frame (4), and a first rotating rod (5) being fixedly mounted on the rod body of the first rotating rod (5) A synchronous pulley (6), and a belt (7) is sleeved on the outer side of the synchronous pulley (6), the side walls at the left and right ends of the mounting frame (1) are slidably connected with a slide groove (8), and the slide groove (8) is symmetrically arranged with respect to the horizontal center axis of the mounting frame (1), and the inner side wall of the slide groove (8) is fixedly connected to the lower mold (2) and the upper mold (3), and the side wall of the mounting frame (4) is fixedly installed with a first motor (9), and the output end of the first motor (9) is fixedly connected to the first rotating rod (5); A bidirectional threaded rod (10), wherein the bidirectional threaded rod (10) is rotatably connected to the inside of the mounting frame (1), and both left and right ends of the rod body of the bidirectional threaded rod (10) are slidably connected to internal threaded sleeves (11), a second motor (12) is fixedly installed at the right end of the bottom of the mounting frame (1), and the output end of the second motor (12) is fixedly connected to the right end rod body of the bidirectional threaded rod (10), an articulated rod (13) is rotatably connected to the upper end member of the internal threaded sleeve (11), and a guide rod (14) is rotatably connected to the upper end rod body of the articulated rod (13), and the upper end rod body of the guide rod (14) extends through and extends to the inside of the lower mold (2), and a guide plate (15) is installed inside the lower mold (2); A fan (16) is fixedly mounted on the inner top of the upper mold (3), and the fan (16) is symmetrically arranged left and right about the vertical center axis of the upper mold (3), and the fan (16) is symmetrically arranged front and back about the vertical center axis of the upper mold (3), a second rotating rod (17) is rotatably mounted at both the front and rear ends inside the upper mold (3), baffles (18) are fixedly mounted at both the left and right ends of the rod body of the second rotating rod (17), and a gear (19) is fixedly mounted at the middle position of the rod body of the second rotating rod (17), an electric push rod (20) is fixedly mounted at both the front and rear ends of the inner top of the upper mold (3), and a rack (21) is fixedly mounted at the output end of the electric push rod (20).

2. The sand core structure of the blade steel casting according to claim 1 is characterized in that: The first rotating rod (5) is arranged in a "Z"-shaped structural state, and the first rotating rod (5) is slidably connected to the inside of the slide groove (8), and the first rotating rod (5) drives the slide groove (8) to form a sliding structure on the side wall of the installation frame (1), and the slide groove (8) drives the lower mold (2) and the upper mold (3) to form a lifting structure.

3. The sand core structure of the blade steel casting according to claim 1 is characterized in that: The inner side wall of the internal thread sleeve (11) is connected to the bidirectional threaded rod (10) through threads, and the sliding direction of the left internal thread sleeve (11) in the bidirectional threaded rod (10) is arranged in an opposite state to the sliding direction of the right internal thread sleeve (11) in the bidirectional threaded rod (10).

4. The sand core structure of the blade steel casting according to claim 1 is characterized in that: The internal thread sleeve (11) drives the guide rod (14) through the hinge rod (13) to form a lifting structure, and the guide rod (14) is arranged in an inclined state, and the upper end rod body of the guide rod (14) and the guide plate (15) are arranged in a corresponding state.

5. The sand core structure of the blade steel casting according to claim 1, characterized in that: The gear (19) and the rack (21) are meshed with each other, and the gear (19) drives the baffle (18) to form a flip structure.

6. The sand core structure of the blade steel casting according to claim 1, characterized in that: The fan (16) is arranged in a corresponding state to the ventilation opening of the upper mold (3), and the diameter size of the ventilation opening is consistent with that of the baffle (18), and the baffle (18) fits the ventilation opening.

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