A sand mold casting device for spiral casing

Abstract

The utility model discloses a sand mold casting device for a volute, which relates to the technical field of volute sand mold manufacturing, comprising a mold for casting the sand mold, a vertical drive mechanism, a mounting plate, a material box, an auxiliary system on the top of the material box and a feeding pipe at the bottom of the material box, wherein both ends of the mounting plate are connected to the movable end of the vertical drive mechanism, the material box is fixedly arranged at the center position of the mounting plate, the mold is arranged below the material box, and an injection port is provided on the mold, the injection port and the feeding pipe are on the same center line and the inner diameter of the injection port is larger than the outer diameter of the feeding pipe; during the insertion of the feeding pipe of the utility model into the injection port, the mold abuts against the surface of the bottom plate, and the feeding component works, and as the material box continues to descend, the blocking block at the bottom of the horizontal plate inside the material box moves away from the upper end of the feeding pipe, the feeding pipe opens, and the feeding component transports sand into the mold, thereby achieving the purpose of automatic feeding, saving personnel and improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of volute sand mold manufacturing, in particular to a volute sand mold casting device. Background Art

[0002] The casting of the volute is to pour the molten metal into the assembled sand mold, and then cool it to get the casting. The sand mold used for volute casting is obtained by pouring, and the sand material mixed in a certain proportion is injected into the mold, treated at high temperature, and finally cooled to obtain the sand mold.

[0003] In the existing sand mold casting device, the pipe mouth is aligned or inserted into the mold injection port, and the switch is manually controlled to inject material. There is a lack of automatic unloading structure, the degree of automation is low, the work efficiency needs to be improved, and the uniformity of unloading in the existing method cannot be guaranteed. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a sand mold casting device for a volute. During the process of inserting a feed pipe into the injection port, the mold abuts against the surface of the bottom plate, and the feeding assembly works. As the material box continues to descend, the blocking block at the bottom of the cross plate inside the material box moves away from the upper end of the feed pipe, the feed pipe opens, and the feeding assembly transports sand into the mold, thereby achieving the purpose of automatic feeding, saving manpower, and improving work efficiency.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a sand mold casting device for a volute, comprising a mold for casting a sand mold, a vertical drive mechanism, a mounting plate, a material box, an auxiliary system on the top of the material box and a feed pipe at the bottom of the material box, wherein both ends of the mounting plate are connected to the movable end of the vertical drive mechanism, the material box is fixedly arranged at the center position of the mounting plate, the mold is arranged below the material box, and an injection port is provided on the mold, the injection port and the feed pipe are on the same center line, and the inner diameter of the injection port is larger than the outer diameter of the feed pipe. ; A plurality of limit holes are evenly arranged in a circle at the bottom of the material box corresponding to the outer side of the discharge pipe, and a limit rod is movably arranged in each limit hole. The upper ends of the plurality of limit rods are connected to a horizontal plate, and the lower ends are connected to an annular bottom plate. An elastic member is sleeved on the portion of the limit rod corresponding to the outer side of the material box, and the elastic member applies a downward force to the bottom plate. A blocking block is arranged at the center position of the bottom of the horizontal plate, and the blocking block can block the upper opening of the discharge pipe; a feeding assembly is arranged in the discharge pipe, which can evenly convey sand materials, and a proximity sensor is arranged at the bottom of the bottom plate.

[0006] Preferably, the feeding assembly includes a motor, a rotating shaft and spiral blades. The motor is fixedly arranged at the center position of the horizontal plate. A protective cover is arranged on the outside of the motor. The output end of the motor is connected to the upper end of the rotating shaft. The rotating shaft passes through the center position of the horizontal plate and the blocking block and can rotate. The threaded blades are arranged on the rotating shaft, and the rotating shaft and spiral blades are inserted into the discharge pipe.

[0007] Preferably, the elastic member is a compression spring, which is sleeved on the limiting rod, with the upper end of the compression spring fixedly connected to the bottom of the material box and the lower end fixedly connected to the upper surface of the bottom plate.

[0008] Preferably, a circle of baffles is provided at the bottom of the transverse plate near the edge.

[0009] Preferably, the bottom of the feed pipe is designed with a necking.

[0010] The utility model provides a sand mold casting device for a volute, which has the following beneficial effects:

[0011] 1. During the process of inserting the feeding tube of the utility model into the injection port, the mold abuts against the surface of the bottom plate, and the feeding assembly works. As the material box continues to descend, the blocking block at the bottom of the horizontal plate inside the material box moves away from the upper end of the feeding tube, the feeding tube opens, and the feeding assembly transports the sand material into the mold, thereby achieving the purpose of automatic feeding, saving manpower, and improving work efficiency.

[0012] 2. The feeding assembly in the utility model adopts a spiral feeding method. The motor drives the rotating shaft and the spiral blades to rotate, and the sand in the material box is transported to the mold. The spiral feeding method can avoid blockage while ensuring the uniformity of the sand conveying. The injection amount can be controlled by controlling the time, thereby further improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front cross-sectional view of a sand mold casting device for a volute before material injection;

[0014] Figure 2 For this utility model Figure 1 Enlarged view of the feeding assembly;

[0015] Figure 3 The utility model is a front view cross-sectional view of a sand mold casting device for a volute during material pouring.

[0016] In the figure: 1. mold; 2. injection port; 3. vertical drive mechanism; 4. mounting plate; 5. material box; 6. auxiliary system; 7. feeding assembly; 8. limit rod; 9. cross plate; 10. motor; 11. protective cover; 12. feed pipe; 13. rotating shaft; 14. spiral blade; 15. compression spring; 16. blocking block; 17. limit hole; 18. baffle; 19. bottom plate; 20. shrinkage; 21. proximity sensor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1-3 As shown, a sand mold casting device for a volute comprises a mold 1 for casting a sand mold, a vertical drive mechanism 3, a mounting plate 4, a material box 5, an auxiliary system 6 on the top of the material box 5 and a feeding pipe 12 at the bottom of the material box 5, both ends of the mounting plate 4 are connected to the moving end of the vertical drive mechanism 3, the material box 5 is fixedly arranged at the center position of the mounting plate 4, the mold 1 is arranged below the material box 5, an injection port 2 is arranged on the mold 1, the injection port 2 and the feeding pipe 12 are on the same center line and the inner diameter of the injection port 2 is larger than the outer diameter of the feeding pipe 12; a plurality of limiting holes 17 are evenly opened in a circle at the bottom of the material box 5 corresponding to the outer side of the feeding pipe 12, a limiting rod 8 is movably arranged in each limiting hole 17, a plurality of limiting rods 8 are connected to a horizontal plate 9 at the upper end, and an annular bottom plate 19 at the lower end, an elastic member is sleeved on the portion of the limiting rod 8 corresponding to the outer side of the material box 5, the elastic member applies a downward force to the bottom plate 19, and a A blocking block 16, which can block the upper opening of the feed pipe 12; a feeding assembly 7 is arranged in the feed pipe 12, which can evenly convey sand materials, and a proximity sensor 21 is arranged at the bottom of the bottom plate 19; the feeding assembly 7 includes a motor 10, a rotating shaft 13 and a spiral blade 14, the motor 10 is fixedly arranged at the center position on the cross plate 9, a protective cover 11 is arranged outside the motor 10, the output end of the motor 10 is connected to the upper end of the rotating shaft 13, the rotating shaft 13 passes through the center position of the cross plate 9 and the blocking block 16 and can rotate, the spiral blade is arranged on the rotating shaft 13, the rotating shaft 13 and the spiral blade 14 are inserted into the feed pipe 12; the elastic member adopts a compression spring 15, the compression spring 15 is sleeved on the limit rod 8, the upper end of the compression spring 15 is fixedly connected to the bottom of the material box 5, and the lower end is fixedly connected to the upper surface of the bottom plate 19; a circle of baffles 18 are arranged near the edge of the bottom of the cross plate 9; the bottom of the feed pipe 12 is designed with a constriction 20.

[0019] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process, which are as follows:

[0020] According to the instruction manual Figure 1-3It can be known that when the utility model is used, the moving end of the vertical driving mechanism 3 can drive the mounting plate 4 to move vertically. When injecting materials, the mounting plate 4 and the material box 5 are driven to move downward. The mold 1 arranged below the material box 5 is used to cast the sand mold. The pouring port arranged on the mold 1 corresponds to the vertical direction of the feeding tube 12 at the bottom of the material box 5, and the inner diameter is larger than the outer diameter of the feeding tube 12. The material box 5 moves downward to make the feeding tube 12 extend into the pouring port. During the insertion process, the annular bottom plate 19 abuts against the upper surface of the mold 1. Since the bottom plate 19 is vertically slidably connected to the limiting holes 17 at the bottom of the material box 5 through a plurality of limiting rods 8, the horizontal plate 9 at the upper ends of the plurality of limiting rods 8 separates the bottom of the material box 5 as the material box 5 and the feeding tube 12 move downward, that is, the blocking block 16 at the bottom of the horizontal plate 9 separates from the upper opening of the feeding tube 12, and the sand material in the material box 5 can enter the feeding tube 12 and finally enter the mold 1. Compared with the prior art, the utility model achieves the purpose of automatic feeding, saves personnel, and improves work efficiency. Optimally, a feeding assembly 7 is provided in the feeding tube 12, and a proximity sensor 21 is provided at the bottom of the bottom plate 19. When the proximity sensor 21 is close to or in contact with the upper surface of the mold 1, it can transmit a signal to enable the feeding assembly 7 to work automatically. The feeding assembly 7 can evenly transport the sand material in the material box 5 to the mold 1, ensuring continuous and uniform feeding, and the injection amount can be controlled by controlling the time, thereby further improving the degree of automation.

[0021] Among them, the feeding assembly 7 includes a motor 10, a rotating shaft 13 and a spiral blade 14. The motor 10 is fixedly arranged at the center position of the horizontal plate 9. A protective cover 11 is arranged outside the motor 10. The protective cover 11 protects the motor 10 well to avoid being affected by the sand material. The output end of the motor 10 is connected to the upper end of the rotating shaft 13. The rotating shaft 13 runs through the center position of the horizontal plate 9 and the blocking block 16 and can rotate. The spiral blade is arranged on the rotating shaft 13, and the rotating shaft 13 and the spiral blade 14 are inserted into the feeding pipe 12. When working, the rotation of the motor 10 drives the rotating shaft 13 and the spiral blade 14 to rotate, so that the sand material in the material box 5 is conveyed to the feeding pipe 12 and enters the mold 1 in a spiral feeding manner. The spiral feeding method can avoid blockage while ensuring the uniformity of conveying sand material. The injection amount can be controlled by controlling the time, thereby further improving the degree of automation.

[0022] The elastic member is a compression spring 15, which is sleeved on the limit rod 8, and the upper end of the compression spring 15 is fixedly connected to the bottom of the material box 5, and the lower end is fixedly connected to the upper surface of the bottom plate 19. When working, the compression spring 15 is in a compressed and force-storing state, ensuring that the blocking block 16 at the bottom of the horizontal plate 9 is tightly fitted with the upper end of the feed pipe 12, so as to achieve the purpose of blocking the feed pipe 12.

[0023] Among them, a circle of baffles 18 are arranged near the edge of the bottom of the transverse plate 9, which isolates the feeding pipe 12 from the sand material in the material box 5 when the feeding is not in the feeding state, and further increases the sealing performance of the feeding pipe 12 when the feeding is not in the feeding state.

[0024] The bottom of the feed tube 12 is designed with a constriction 20 to facilitate the insertion of the feed tube 12 into the injection port 2 .

[0025] The auxiliary system 6 on the top of the material box 5 of the utility model includes a material feeding port, a pressure release port, a sand material quantity monitoring sensor, etc., and the vertical drive mechanism 3 all adopt the existing technology.

[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. A sand mold casting device for a spiral casing, characterized in that: The invention comprises a mold (1) for casting a sand mold, a vertical drive mechanism (3), a mounting plate (4), a material box (5), an auxiliary system (6) at the top of the material box (5), and a feed pipe (12) at the bottom of the material box (5), wherein both ends of the mounting plate (4) are connected to the movable end of the vertical drive mechanism (3), the material box (5) is fixedly arranged at the center position of the mounting plate (4), the mold (1) is arranged below the material box (5), and an injection port (2) is provided on the mold (1), the injection port (2) and the feed pipe (12) are on the same center line and the inner diameter of the injection port (2) is larger than the outer diameter of the feed pipe (12); the bottom of the material box (5) corresponds to the outer side of the feed pipe (12) A plurality of limiting holes (17) are evenly arranged in a circle, and a limiting rod (8) is movably arranged in each limiting hole (17). The upper ends of the plurality of limiting rods (8) are connected to a transverse plate (9), and the lower ends are connected to an annular bottom plate (19). The portion of the limiting rod (8) corresponding to the outer side of the material box (5) is sleeved with an elastic member, and the elastic member applies a downward force to the bottom plate (19). A blocking block (16) is arranged at the center position of the bottom of the transverse plate (9), and the blocking block (16) can block the upper opening of the discharge pipe (12); a feeding assembly (7) is arranged in the discharge pipe (12), which can evenly convey sand material, and a proximity sensor (21) is arranged at the bottom of the bottom plate (19).

2. A sand mold casting device for a spiral casing according to claim 1, characterized in that: The feeding assembly (7) comprises a motor (10), a rotating shaft (13) and a spiral blade (14); the motor (10) is fixedly arranged at the center position of the transverse plate (9); a protective cover (11) is arranged outside the motor (10); the output end of the motor (10) is connected to the upper end of the rotating shaft (13); the rotating shaft (13) passes through the center position of the transverse plate (9) and the blocking block (16) and is rotatable; the spiral blade is arranged on the rotating shaft (13); the rotating shaft (13) and the spiral blade (14) are inserted into the feeding pipe (12).

3. A sand mold casting device for a spiral casing according to claim 1, characterized in that: The elastic member is a compression spring (15) which is sleeved on the limiting rod (8). The upper end of the compression spring (15) is fixedly connected to the bottom of the material box (5), and the lower end is fixedly connected to the upper surface of the bottom plate (19).

4. A sand mold casting device for a spiral casing according to claim 1, characterized in that: A circle of baffles (18) is arranged at the bottom of the transverse plate (9) near the edge.

5. The sand mold casting device for a spiral casing according to claim 1, characterized in that: The bottom of the feed pipe (12) is designed with a constriction (20).

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