Device for eliminating shrinkage porosity and sand pores in casting

Abstract

The utility model discloses a device for eliminating shrinkage porosity and sand pores in a casting, which relates to the technical field of casting processing and comprises a bottom plate and a vertical rod, limiting shells are rotatably arranged on two sides of the upper surface of the bottom plate, two molds are inserted into the limiting shells, casting ports are arranged on the upper sides of the two molds, and the vertical rod is arranged on the vertical rod. The two vertical rods are fixedly arranged on the two sides of the upper surface of the bottom plate, transverse plates are fixedly arranged between the two sides of the two vertical rods, a movable ring is arranged between the two transverse plates, sliding blocks are fixedly arranged at the two ends of the movable ring, and strip-shaped openings are formed in the surfaces of the two transverse plates; the two sliding blocks are slidably connected with the corresponding strip-shaped openings, knocking rods are fixedly arranged on the two sides of the movable ring, a rotating rod is rotationally arranged on the upper surface of the bottom plate, and a rotating disc fixedly sleeves the upper end of the rotating rod. According to the utility model, shrinkage porosity and sand pore elimination work can be carried out on a plurality of castings at the same time, and the working efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting processing, and particularly relates to a device for eliminating internal shrinkage porosity and sand holes in castings. Background Technique

[0002] Modern valve body castings belong to casting equipment. However, when the existing castings are used for valve body casting, during the late solidification stage of the casting, due to the change of the temperature gradient, many fine grains will appear in the casting solution. After the grains grow and connect with each other, the remaining molten metal will be divided into non-communicating small molten pools. These small molten pools cannot be compensated by liquid during further cooling and solidification, resulting in many small holes, namely shrinkage porosity. When shrinkage porosity appears in the valve body casting during the processing, the service life and performance of the valve body casting will be reduced.

[0003] Among them, the device with the publication number CN217798906U discloses a device for automatically eliminating shrinkage porosity in valve body castings, including a base. The upper surface of the base is rotatably connected with a rotating disk through a fixed shaft. The upper surface of the rotating disk is provided with a placement groove, and a mold is arranged in the placement groove. The upper surface of the mold is provided with a feeding port. The outer contour of the bottom of the rotating disk is fixedly connected with a toothed ring, and the toothed ring is drivingly connected with two auxiliary mechanisms for eliminating internal shrinkage porosity in the casting. The auxiliary mechanism includes a gear rotatably connected to the upper surface of the base through a fixed shaft. One side of the upper surface of the base near the gear is provided with a fixed plate. The surface of the fixed plate is provided with a sliding groove and is slidably connected with a pushing frame through the sliding groove. The upper surface of the gear is fixedly connected with an eccentric column for pushing the pushing frame to move. One end of the pushing frame close to the placement groove is provided with a knocking head for the mold. There are still defects in this technical solution:

[0004] In this technical solution, the knocking head can only perform the work of eliminating shrinkage porosity and sand holes in a single casting when it reciprocates once. The process of the knocking head resetting is an idle stroke, resulting in a waste of time and thus reducing the working efficiency. Content of the Utility Model

[0005] In view of the problems existing in the above-mentioned existing device for eliminating internal shrinkage porosity and sand holes in castings, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a device for eliminating internal shrinkage porosity and sand holes in castings, which solves the problem that in the device for automatically eliminating shrinkage porosity in valve body castings in the prior art, the knocking head can only perform the work of eliminating shrinkage porosity and sand holes in a single casting when it reciprocates once. The process of the knocking head resetting is an idle stroke, resulting in a waste of time and thus reducing the working efficiency.

[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A device for eliminating internal shrinkage porosity and sand holes in a casting, comprising a bottom plate and vertical rods. On both sides of the upper surface of the bottom plate, limiting shells are rotatably arranged. Two molds are inserted into the limiting shells. Pouring ports are opened on the upper sides of the two molds. The two vertical rods are fixedly arranged on both sides of the upper surface of the bottom plate. Cross plates are fixedly arranged between the two sides of the two vertical rods. An activity ring is arranged between the two cross plates. Sliders are fixedly arranged at both ends of the activity ring. Strip-shaped openings are opened on the surfaces of the two cross plates. The two sliders are slidably connected to the corresponding strip-shaped openings. Knocking rods are fixedly arranged on both sides of the activity ring. A rotating rod is rotatably arranged on the upper surface of the bottom plate. A turntable is fixedly sleeved at the upper end of the rotating rod. A round pin is eccentrically arranged on the upper side of the turntable. The upper end of the round pin passes through the activity ring. A transmission mechanism for driving the two limiting shells and the rotating rod to rotate is arranged on the lower side of the bottom plate. The upper ends of the two vertical rods are fixedly provided with a top plate. A limiting mechanism for limiting the mold is arranged on the lower side of the top plate.

[0009] Preferably, the transmission mechanism includes a worm gear and a worm. A transmission rod is fixedly connected to the middle of the lower side of each of the two limiting shells. A plurality of worm gears are respectively fixedly sleeved on the lower ends of the corresponding transmission rods and the rotating rod. A plurality of worms are meshed with the front sides of the corresponding worm gears. The heads and tails of the plurality of worms are fixedly arranged. The outer ends of both sides of the worms are rotatably connected to side plates. One side of the side plate is fixedly connected to the bottom plate. A motor is fixedly arranged on the outer side of one side plate. The output end of the motor is fixedly connected to one end of the worm on one side.

[0010] Preferably, the limiting mechanism includes a hydraulic cylinder and a limiting plate. The end of the piston rod of the hydraulic cylinder extends to the lower side of the top plate. The limiting plate is fixedly arranged at the end of the piston rod of the hydraulic cylinder. Limiting holes are opened at both ends of the limiting plate at positions corresponding to the mold. The limiting holes are sleeved on the outer side of the mold.

[0011] Preferably, the knocking rod is a rubber rod.

[0012] Preferably, a retaining ring is movably sleeved on the upper end of the round pin.

[0013] Preferably, the motor is fixedly connected to the corresponding side plate through a support frame.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model:

[0015] In this utility model, the motor drives the worm to rotate, so that multiple worms drive the corresponding worm wheels to rotate, thus driving the transmission rods and the rotating rods on both sides to rotate. The rotating rods drive the turntables to rotate, so that the round pins rotate around the rotating rods, and then the movable rings can be driven to reciprocate. Furthermore, the two knocking rods knock on the molds rotating on both sides, so that the porosity and sand holes of multiple castings can be eliminated simultaneously, which can greatly improve the working efficiency. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in this utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a device for eliminating porosity and sand holes inside castings proposed by this utility model;

[0018] Figure 2 For Figure 1 internal structural schematic diagram;

[0019] Figure 3 For Figure 2 is a three-dimensional view of the movable ring in

[0020] Explanation of the reference numerals in the drawings:

[0021] 1. Base plate; 2. Vertical rod; 3. Top plate; 4. Hydraulic cylinder; 5. Limiting plate; 6. Limiting ring; 7. Mold; 8. Rotating rod; 9. Transmission rod; 10. Worm wheel; 11. Worm; 12. Side plate; 13. Motor; 14. Cross plate; 15. Slide block; 16. Knocking rod; 17. Movable ring; 18. Round pin; 19. Turntable. Detailed Embodiment

[0022] In order to enable those skilled in the art to better understand the technical solutions of this utility model, the following will further introduce this utility model in detail with reference to the drawings.

[0023] The embodiment of this utility model discloses a device for eliminating porosity and sand holes inside castings.

[0024] Refer to Figures 1-3, A device for eliminating shrinkage porosity and sand holes inside a casting, comprising a bottom plate 1 and vertical rods 2. On both sides of the upper surface of the bottom plate 1, limit shells 6 are rotatably arranged. Two molds 7 are inserted inside the limit shells 6. Pouring ports are arranged on the upper sides of the two molds 7. The two vertical rods 2 are fixedly arranged on both sides of the upper surface of the bottom plate 1. Cross plates 14 are fixedly arranged between the two sides of the two vertical rods 2. An activity ring 17 is arranged between the two cross plates 14. Sliders 15 are fixedly arranged at both ends of the activity ring 17. Strip-shaped openings are arranged on the surfaces of the two cross plates 14. The two sliders 15 are slidably connected to the corresponding strip-shaped openings. Knocking rods 16 are fixedly arranged on both sides of the activity ring 17. The knocking rods 16 are rubber rods to prevent damage to the molds as much as possible. A rotating rod 8 is rotatably arranged on the upper surface of the bottom plate 1. A turntable 19 is fixedly sleeved at the upper end of the rotating rod 8. A round pin 18 is eccentrically arranged on the upper side of the turntable 19. The upper end of the round pin 18 passes through the activity ring 17. The upper ends of the two vertical rods 2 are fixedly provided with a top plate 3. A retaining ring is movably sleeved at the upper end of the round pin 18 to prevent the round pin 18 from slipping out of the strip-shaped opening as much as possible.

[0025] Refer to Figures 1-3 , A transmission mechanism for driving the two limit shells 6 and the rotating rod 8 to rotate is arranged on the lower side of the bottom plate 1. The transmission mechanism includes a worm gear 10 and a worm 11. Transmission rods 9 are fixedly connected to the middle parts of the lower sides of the two limit shells 6 respectively. Multiple worm gears 10 are respectively fixedly sleeved on the corresponding transmission rods 9 and the lower ends of the rotating rod 8. Multiple worms 11 are meshed with the front sides of the corresponding worm gears 10 respectively. The multiple worms 11 are fixedly arranged end to end. The outer ends of both sides of the worms 11 are rotatably connected with side plates 12. One side of the side plate 12 is fixedly connected to the bottom plate 1. A motor 13 is fixedly arranged on the outer side of one side plate 12. The output end of the motor 13 is fixedly connected to one end of the worm 11 on one side. The motor 13 is fixedly connected to the corresponding side plate 12 through a support frame, making the connection between the motor 13 and the side plate 12 more stable.

[0026] Refer to Figures 1-3 , A limiting mechanism for limiting the molds 7 is arranged on the lower side of the top plate 3. The limiting mechanism includes a hydraulic cylinder 4 and a limiting plate 5. The end of the piston rod of the hydraulic cylinder 4 extends to the lower side of the top plate 3. The limiting plate 5 is fixedly arranged at the end of the piston rod of the hydraulic cylinder 4. Limiting holes are arranged at both ends of the limiting plate 5 at positions corresponding to the molds 7. The limiting holes are sleeved on the outer sides of the molds 7.

[0027] In the present utility model, during use, the motor 13 drives the worm 11 to rotate, that is, the multiple worms 11 drive the corresponding worm gears 10 to rotate, that is, the two transmission rods 9 and the rotating rod 8 on both sides rotate. The rotating rod 8 drives the turntable 19 to rotate, that is, the round pin 18 rotates around the rotating rod 8, that is, it can drive the activity ring 17 to reciprocate, and further the two knocking rods 16 knock the two rotating molds 7 on both sides, that is, it can simultaneously carry out shrinkage porosity and sand hole elimination work on multiple castings, and can greatly improve the work efficiency.

[0028] The above only describes certain exemplary embodiments of the present utility model by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A device for eliminating internal shrinkage porosity and sand pores in a casting, comprising a bottom plate (1) and a vertical rod (2), characterized in that, On both sides of the upper surface of the bottom plate (1), limiting shells (6) are rotatably arranged. Two molds (7) are inserted into the limiting shells (6). Pouring ports are arranged on the upper sides of the two molds (7). Two vertical rods (2) are fixedly arranged on both sides of the upper surface of the bottom plate (1). Cross plates (14) are fixedly arranged between the two sides of the two vertical rods (2). An activity ring (17) is arranged between the two cross plates (14). Sliders (15) are fixedly arranged at both ends of the activity ring (17). Strip-shaped openings are arranged on the surfaces of the two cross plates (14). The two sliders (15) are slidably connected to the corresponding strip-shaped openings. Knocking rods (16) are fixedly arranged on both sides of the activity ring (17). A rotating rod (8) is rotatably arranged on the upper surface of the bottom plate (1). A turntable (19) is fixedly sleeved at the upper end of the rotating rod (8). A round pin (18) is eccentrically arranged on the upper side of the turntable (19). The upper end of the round pin (18) passes through the activity ring (17). A transmission mechanism for driving the two limiting shells (6) and the rotating rod (8) to rotate is arranged on the lower side of the bottom plate (1). The upper ends of the two vertical rods (2) are fixedly provided with a top plate (3). A limiting mechanism for limiting the mold (7) is arranged on the lower side of the top plate (3).

2. The internal shrinkage porosity and sand blowhole eliminating device for castings according to claim 1, wherein The transmission mechanism includes a worm wheel (10) and a worm (11). Transmission rods (9) are fixedly connected to the middle parts of the lower sides of the two limiting shells (6). A plurality of worm wheels (10) are respectively fixedly sleeved on the lower ends of the corresponding transmission rods (9) and the rotating rod (8). A plurality of worms (11) are meshed with the front sides of the corresponding worm wheels (10). The heads and tails of the plurality of worms (11) are fixedly arranged. The outer ends of both sides of the worms (11) are rotatably connected to side plates (12). One side of the side plate (12) is fixedly connected to the bottom plate (1). A motor (13) is fixedly arranged on the outer side of one side plate (12). The output end of the motor (13) is fixedly connected to one end of the worm (11) on one side.

3. The internal shrinkage porosity and sand blowhole elimination device for castings according to claim 1, wherein The limiting mechanism includes a hydraulic cylinder (4) and a limiting plate (5). The end of the piston rod of the hydraulic cylinder (4) extends to the lower side of the top plate (3). The limiting plate (5) is fixedly arranged at the end of the piston rod of the hydraulic cylinder (4). Limiting holes are arranged at both ends of the limiting plate (5) at positions corresponding to the mold (7). The limiting holes are sleeved on the outer side of the mold (7).

4. The internal shrinkage porosity and sand blowhole elimination device for castings according to claim 1, characterized in that, The knocking rod (16) is a rubber rod.

5. The internal shrinkage porosity and sand blowhole eliminating device for castings according to claim 1, characterized in that, A retaining ring is movably sleeved on the upper end of the round pin (18).

6. The internal shrinkage porosity and sand blowhole elimination device for castings according to claim 2, characterized in that, The motor (13) is fixedly connected to the corresponding side plate (12) through a support frame.

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