CN117182006B

CN117182006B - Middle-opening pump body sand core sand mould honeycomb density exhaust pre-tightening device

Info

Publication number: CN117182006B
Application number: CN202311469235.0A
Authority: CN
Inventors: 王忠志
Original assignee: Jiangsu Huaxing Special Steel Casting Co ltd
Current assignee: Jiangsu Huaxing Special Steel Casting Co ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-03-12
Anticipated expiration: 2043-11-07
Also published as: CN117182006A

Abstract

The invention discloses a density exhaust pre-tightening device for sand mould honeycomb of a split pump body, which relates to the field of medium conveying and comprises a bottom plate, a top plate and a mould, wherein a driving mechanism is arranged at the top of the top plate and is connected with a first compacting mechanism, and two sides of the first compacting mechanism are respectively provided with a second compacting mechanism. According to the invention, the driven gear and the like drive the movable frame to do left-right reciprocating motion and also do vertical motion, so that the compacting piece at the bottom of the second mounting plate can be used for compacting and pre-tightening the sand, meanwhile, the rotating disc, the rotating plate, the elastic piece and the like drive the first movable block to do up-down reciprocating motion, and the elastic piece can be used for shaking the first movable block during up-down motion, so that the compacting piece of the first mounting plate can also be used for compacting and pre-tightening the sand, the problem that the pre-tightening degree is insufficient easily caused by manual operation, the size of a casting is unstable is solved, and the compacting force is gradually improved.

Description

Middle-opening pump body sand core sand mould honeycomb density exhaust pre-tightening device

Technical Field

The invention relates to the technical field of medium conveying, in particular to a sand mould honeycomb density exhaust pre-tightening device for a split pump body and a sand mould.

Background

The split pump (split circulation) is also called a single-stage double-suction centrifugal pump and is mainly characterized by large flow rate of conveying medium. Principle of operation of the split pump: the impeller is arranged in the pump shell and is fastened on the pump shaft, the pump shaft is directly driven by the motor, the pump body of the split pump is cast by a sand mould during manufacturing, and in order to ensure the quality of the sand mould and avoid air holes generated by castings, the pump body needs to be exhausted during manufacturing the sand mould and casting metal.

However, in the prior art, in the process of manufacturing a sand mold, in the process of gradually adding molding sand into the mold, manually compacting the molding sand to perform pre-tightening, so that uneven pre-tightening is easy to occur, the operation process is complex, the production efficiency is low, the pre-tightening degree is insufficient, the size of a casting is unstable, the product is scrapped, and in addition, if the pre-tightening degree is insufficient, air holes, sand holes, deformation and the like of the casting are caused;

in addition, when exhausting, the mode of using is usually reserved exhaust hole when making the sand mould, but this mode is liable to cause exhaust effect relatively poor, and if when adopting the centrifugal pump to exhaust, not only the operation degree of difficulty is great, and equipment and technical requirement are higher, and the cost is also higher.

Disclosure of Invention

The invention aims to provide a density exhaust pre-tightening device for a sand mould honeycomb of a split pump body, which aims to solve the problems that the pre-tightening is easy to occur due to insufficient pre-tightening degree in the manual operation provided by the background art, the size of a casting is unstable, air holes, sand holes and deformation occur in the casting, and in addition, the exhaust effect is poor or the exhaust cost is high in the process of exhausting.

In order to achieve the above purpose, the present invention provides the following technical solutions: the device comprises a bottom plate, a top plate and a die, wherein a driving mechanism is arranged at the top of the top plate and is connected with a first compacting mechanism, and second compacting mechanisms are arranged on two sides of the first compacting mechanism;

the first compaction mechanism comprises a rotating disc and a connecting frame, wherein a rotating plate is fixedly connected to one side shaft end of the rotating disc, first fixed rods are fixedly installed at the top and the bottom of the connecting frame, one of the first fixed rods is fixedly connected with the center of the top of an elastic piece, the other of the first fixed rods is fixedly connected with a first shaft rod, one end of the first shaft rod is fixedly connected with the rotating plate, first linkage rods are rotatably installed at two ends of the elastic piece, a movable plate is rotatably connected to one end of the first linkage rod, a first movable block is fixedly installed at one end of the movable plate, and a first mounting plate is fixedly installed at one side of the first movable block;

the second compaction mechanism comprises a driven gear and a movable frame, a second linkage rod is rotatably arranged on one side of the driven gear, a second shaft rod is fixedly arranged at one end of the second linkage rod, one end of the second shaft rod is rotatably connected with the top end of the movable frame, a second fixing rod is fixedly arranged on the inner side of the movable frame, a fixing frame is fixedly arranged on the bottom of the movable frame, the bottom end of the second fixing rod sequentially penetrates through the movable frame and the fixing frame, and a second mounting plate is fixedly arranged on the bottom of the second fixing rod.

Preferably, the compacting piece is fixedly installed at the bottoms of the first mounting plate and the second mounting plate, the compacting piece comprises a sleeve, a second baffle is slidably installed inside the sleeve, one end of the second baffle is fixedly connected with a second movable rod, one end of the second movable rod penetrates through the sleeve, one end of the second movable rod is fixedly connected with the compacting plate, and a third spring is sleeved on the surface of the second movable rod.

Preferably, a limiting frame is arranged on one side of the first moving block, the first moving block is slidably mounted inside the limiting frame, first limiting holes are formed in two sides of the limiting frame, and the moving plate is slidably mounted inside the first limiting holes.

Preferably, a limit rail is arranged on one side of the fixing frame, a sliding block is slidably mounted in the limit rail, second moving blocks are fixedly connected to two sides of the sliding block, the second moving blocks are located on the inner side of the fixing frame, the second moving blocks are slidably mounted on the surface of a second fixing rod, a second spring is arranged on the inner side of the fixing frame, and the second spring is sleeved on the surface of the second fixing rod.

Preferably, the fixed plate is fixedly arranged at the top of the limiting track, the limiting rod is rotatably arranged at the top end of the fixed plate, and one end of the limiting rod is rotatably connected with the second linkage rod.

Preferably, the second limiting hole is formed in the bottom of the limiting track, the moving rod is fixedly arranged at the bottom of the sliding block, and the bottom end of the moving rod is slidably mounted in the second limiting hole.

Preferably, the driving mechanism comprises a rotating column, the surface movable mounting at two ends of the rotating column is provided with a mounting frame, the top of the mounting frame is fixedly connected with the bottom of the top plate, two ends of the rotating column are fixedly connected with a rotating disc, the middle part of the rotating column is fixedly provided with a driven wheel, the surface of the driven wheel is sleeved with a belt, the top end of the belt is sleeved with a driving wheel, the surface of the rotating column is fixedly provided with a driving gear, and the driving gear is meshed with a driven gear.

Preferably, the roof top fixed mounting has two mounting brackets, the action wheel rotates with the mounting bracket to be connected, driving motor is installed at the roof top, driving motor output and action wheel axle head fixed connection.

Preferably, the inside sand mould that is provided with of mould, sand mould top central authorities are provided with the gate, the sand mould both sides are provided with first gas vent and second gas vent, first gas vent with the equal fixed mounting in second gas vent top has the honeycomb stopper.

Preferably, the first movable rod is fixedly installed on two sides of the die, the side plate is fixedly installed on the top of the bottom plate, one end of the first movable rod penetrates through the side plate, the first baffle is fixedly installed on one end of the first movable rod, the first spring is sleeved on the surface of the first movable rod, one end of the first spring is fixedly connected with the die, the other end of the first spring is fixedly connected with the side plate, and one side of the second mounting plate is fixedly installed with the impact piece.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, when the mould is added with sand, the driven gear, the second linkage rod and the limiting rod are used for driving the movable frame to do left-right reciprocating motion, and the movable frame is also vertically moved, so that the sand at two sides of the inside of the mould can be compacted and pre-compacted by the compaction piece at the bottom of the second mounting plate, and the first mounting plate is driven to move by the first movable block at the moment when the sand gradually covers the sand core, and the first movable block is driven to vertically reciprocate by the rotating disc, the rotating plate, the elastic piece and the like, and the first movable block is dithered by the elastic piece during the up-down motion, so that the compaction piece of the first mounting plate can compact and pre-tighten the sand at the top of the sand core, and the third spring in the sleeve can be stretched, so that the compaction pre-tightening force of the compaction piece can be gradually increased along with the gradual increase of the sand in the mould, and the situation of loose collapse is avoided when metal liquid is poured in the follow-up process of the sand mould, so that the pre-tightening work is completed and the pre-tightening degree is improved.

2. In the invention, when the driving motor starts to operate, the first compacting mechanism and the second compacting mechanism are simultaneously driven to move together, so that in the sand casting process, the first compacting mechanism can compact and pre-tighten the molding sand at the center of the inner cavity of the mold in the process of adding the molding sand on the surface of the sand core, and the compacting piece at the bottom of the second compacting mechanism can compact and pre-tighten the molding sand at the two sides of the inner cavity of the mold, thereby completing the pre-tightening effect and improving the manufacturing efficiency.

3. In the invention, when the impacting piece follows the first mounting plate to reciprocate, and the die is impacted, the die is reversely pushed to reset due to the elasticity of the first spring, and the first springs are sleeved on the surfaces of the first movable rods on the two sides of the die, so that the die can reciprocate left and right when in motion, and can shake when in motion, and at the moment, the purposes of reducing the gap of molding sand and preventing loosening when in pouring are achieved in the pre-tightening working process.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body;

FIG. 2 is a schematic structural view of a part of a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body of the invention;

FIG. 3 is a schematic structural view of a first compacting mechanism and a second compacting mechanism in a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body of the invention;

FIG. 4 is a schematic structural view of a second compaction mechanism in a split pump body sand core sand type honeycomb density exhaust preloading device;

FIG. 5 is a schematic diagram of a part of a second compaction mechanism in a split pump body sand core sand type honeycomb density exhaust preloading device;

FIG. 6 is a schematic diagram of a disassembly structure of a compaction mechanism in a split pump body sand core sand type honeycomb density exhaust preloading device;

FIG. 7 is a schematic diagram of a driving mechanism in a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body;

FIG. 8 is a schematic diagram of the internal structure of a compaction part of a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body of the invention;

FIG. 9 is a schematic diagram of a die structure of a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body of the invention;

fig. 10 is a schematic diagram of a cross-sectional structure of a die of a sand core sand type honeycomb density exhaust pre-tightening device of a split pump body.

In the figure: 1. a bottom plate; 11. a side plate; 2. a mold; 21. a first movable lever; 22. a first spring; 23. a first baffle; 24. a striker; 25. sand mold; 251. a sprue gate; 252. a first exhaust port; 253. a second exhaust port; 254. a honeycomb plug; 3. a top plate; 4. a driving mechanism; 41. a driving motor; 42. a driving wheel; 43. a belt; 44. rotating the column; 45. a drive gear; 46. driven wheel; 47. a mounting frame; 5. a first compaction mechanism; 51. a rotating disc; 52. a rotating plate; 521. a first shaft; 53. a connecting frame; 531. a first fixing rod; 54. an elastic member; 55. a first linkage rod; 56. a limiting frame; 561. a first limiting hole; 57. a first moving block; 58. a moving plate; 59. a first mounting plate; 6. a second compaction mechanism; 61. a driven gear; 62. a second linkage rod; 621. a second shaft; 63. a limit rod; 64. a moving rack; 641. a second fixing rod; 65. a fixing frame; 66. a second mounting plate; 67. a limit rail; 671. a fixing plate; 672. a second limiting hole; 68. a sliding block; 681. a moving rod; 682. a second moving block; 69. a second spring; 7. a compacting member; 71. a sleeve; 72. compacting the plate; 73. a second movable rod; 74. a second baffle; 75. and a third spring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1: referring to fig. 1-6: the device comprises a bottom plate 1, a top plate 3 and a die 2, wherein a driving mechanism 4 is arranged at the top of the top plate 3, the driving mechanism 4 is connected with a first compacting mechanism 5, and second compacting mechanisms 6 are arranged on two sides of the first compacting mechanism 5;

the first compacting mechanism 5 comprises a rotating disc 51 and a connecting frame 53, wherein a rotating plate 52 is fixedly connected to one side shaft end of the rotating disc 51, first fixing rods 531 are fixedly installed at the top and the bottom of the connecting frame 53, the bottom of one first fixing rod 531 is fixedly connected with the center of the top of an elastic piece 54, a first shaft lever 521 is fixedly connected to the top end of the other first fixing rod 531, one end of the first shaft lever 521 is fixedly connected with the rotating plate 52, first linkage rods 55 are rotatably installed at two ends of the elastic piece 54, a movable plate 58 is rotatably connected to one end of the first linkage rods 55, a first movable block 57 is fixedly installed at one end of the movable plate 58, and a first mounting plate 59 is fixedly installed at one side of the first movable block 57;

the second compacting mechanism 6 comprises a driven gear 61 and a movable frame 64, wherein a second linkage rod 62 is rotatably arranged on one side of the driven gear 61, a second shaft 621 is fixedly arranged at one end of the second linkage rod 62, one end of the second shaft 621 is rotatably connected with the top end of the movable frame 64, a second fixing rod 641 is fixedly arranged on the inner side of the movable frame 64, a fixing frame 65 is fixedly arranged at the bottom of the movable frame 64, the bottom end of the second fixing rod 641 sequentially penetrates through the movable frame 64 and the fixing frame 65, and a second mounting plate 66 is fixedly arranged at the bottom of the second fixing rod 641.

The compacting piece 7 is fixedly installed at the bottoms of the first installation plate 59 and the second installation plate 66, the compacting piece 7 comprises a sleeve 71, a second baffle 74 is slidably installed inside the sleeve 71, one end of the second baffle 74 is fixedly connected with a second movable rod 73, one end of the second movable rod 73 penetrates through the sleeve 71, one end of the second movable rod 73 is fixedly connected with a compacting plate 72, and a third spring 75 is sleeved on the surface of the second movable rod 73.

In this embodiment, when the rotating disc 51 rotates, the rotating plate 52 is driven to rotate together, so that the first shaft lever 521 performs a circular operation with the rotating disc 51 as a center of circle, and then along with the movement of the first rotating rod, the first fixing rod 531 may be utilized to drive the connecting frame 53 to move, in this process, the connecting frame 53 drives the elastic member 54 to move up and down through the first fixing rod 531 at the bottom, and because the elastic member 54 drives the first moving block 57 to move through the first linkage rod 55 during the movement, and the first moving block 57 is limited by the limiting frame 56 during the up and down movement, so that the movement track of the first moving block 57 is a linear movement during the up and down movement.

Then, since the elastic member 54 has elasticity and the first moving block 57 is Mo Caili when moving inside the stopper 56, a shaking situation occurs when the elastic frame, the connection frame 53 and the first moving block 57 reciprocate up and down at the same time, and thus the movement of the first mounting plate 59 can be controlled by the up and down movement and shaking of the first moving block 57.

Then, when the driven gear 61 rotates, the second linkage rod 62 is driven to move, at this time, one end of the second linkage rod 62 will perform circular motion on one side surface of the driven gear 61, and because the second shaft 621 is fixedly mounted at the other end of the second linkage rod 62, and the limiting rod 63 is rotatably mounted in the middle of the second linkage rod 62, when the second linkage rod 62 moves following the driven gear 61, the second linkage rod 62 is limited by the limiting rod 63 to drive the moving frame 64 to move, at this time, because the second moving block 682 is disposed inside the fixing frame 65 at the bottom of the moving frame 64, and the sliding block 68 at one side of the second moving block 682 is limited by the limiting track 67 during movement, at this time, the track of the moving frame 64 in the horizontal direction is a straight line, but because the moving block is slidably mounted on the surface of the second fixing rod 641, there is a relative position between the moving frame 64 and the fixing frame 65 and the moving block in the vertical direction, and thus when the second linkage rod 62 moves following the driven gear 61, and the moving frame 64 is driven to move at the highest point and the lowest point.

Finally, as the molding sand is added to the mold 2, the molding sand gradually flows to the two sides of the sand core, at this time, the moving frame 64 is utilized to perform reciprocating switching motion at the highest point and the lowest point, at this time, at the lowest point, the compacting piece 7 at the bottom of the second mounting plate 66 can strike the molding sand at the two sides inside the mold 2 so as to compact the molding sand, after the molding sand gradually covers the sand core, the first mounting plate 59 is driven to move by the first moving block 57 at this time, so that the compacting piece 7 of the first mounting plate 59 starts compacting and pre-tightening the molding sand at the top of the sand core, at this time, again, because the second moving rod 73 can move inside the sleeve 71, and the surface of the second moving rod 73 is sleeved with the third spring 75, so as the molding sand inside the mold 2 gradually increases, the compacting pre-tightening force of the compacting piece 7 gradually increases, and then in the manufacturing process of the sand mold 25, the occurrence of loose collapse, the air hole, the sand hole and deformation of the sand mold 25 can be avoided when the metal liquid is poured later.

Example 2: as shown in fig. 3 to 6, a limiting frame 56 is disposed on one side of the first moving block 57, the first moving block 57 is slidably mounted in the limiting frame 56, first limiting holes 561 are formed on two sides of the limiting frame 56, and the moving plate 58 is slidably mounted in the first limiting holes 561. The fixed frame 65 one side is provided with spacing track 67, and spacing track 67 inside slidable mounting has slider 68, and slider 68 both sides all fixedly connected with second movable block 682, second movable block 682 is located the fixed frame 65 inboard, and second movable block 682 slidable mounting is at second dead lever 641 surface, and the fixed frame 65 inboard is provided with second spring 69, and second spring 69 cup joints at second dead lever 641 surface. The top of the limit rail 67 is fixedly provided with a fixed plate 671, the top end of the fixed plate 671 is rotatably provided with a limit rod 63, and one end of the limit rod 63 is rotatably connected with the second linkage rod 62. A second limiting hole 672 is formed in the bottom of the limiting rail 67, a moving rod 681 is fixedly arranged at the bottom of the sliding block 68, and the bottom end of the moving rod 681 is slidably arranged in the second limiting hole 672.

In this embodiment, when the first moving block 57 moves, not only the first moving block 57 slides up and down in the limiting frame 56, but also the moving plates 58 on both sides slide in the first limiting hole 561, so that the moving plates 58 will also limit the movement of the first moving block 57 during the movement, in addition, the sliding block 68 will slide in the limiting rail 67 during the movement, and the limiting rod 63 connected to the bottom will also slide in the second limiting hole 672, so that the sliding block 68 will not be askew during the reciprocating movement.

Moreover, when the moving frame 64 moves vertically relative to the second moving block 682, the second moving block 682 presses the second spring 69, so that the moving frame 64 is pushed by the second spring 69 during the movement process, and the auxiliary moving frame 64 can be switched, so that the compacting member 7 at the bottom of the second mounting plate 66 can ensure stable movement when compacting molding sand reciprocally.

Example 3: according to the fig. 4 and 7, the driving mechanism 4 comprises a rotating column 44, wherein the surfaces of two ends of the rotating column 44 are movably provided with a mounting frame 47, the top of the mounting frame 47 is fixedly connected with the bottom of the top plate 3, two ends of the rotating column 44 are fixedly connected with a rotating disc 51, the middle part of the rotating column 44 is fixedly provided with a driven wheel 46, the surface of the driven wheel 46 is sheathed with a belt 43, the top end of the belt 43 is sheathed with a driving wheel 42, the surface of the rotating column 44 is fixedly provided with a driving gear 45, and the driving gear 45 is meshed with a driven gear 61. Two mounting frames 47 are fixedly arranged at the top of the top plate 3, the driving wheel 42 is rotationally connected with the mounting frames 47, a driving motor 41 is arranged at the top of the top plate 3, and the output end of the driving motor 41 is fixedly connected with the shaft end of the driving wheel 42.

In this embodiment, when the driving motor 41 moves, the driving wheel 42 can be driven to rotate, so that the driving wheel 42 is limited by the mounting frame 47 and keeps stably rotating in the rotating process, the belt 43 is driven to start moving, at this time, the belt 43 also starts to drive the driven wheel 46 to rotate, and along with the rotation of the driven wheel 46, the rotating post 44 is driven to rotate together, so that the driving gear 45 on the rotating rod surface of the rotating post 44 starts to rotate, and further, the engaged driven gear 61 is driven to rotate, and further, because the rotating post 44 also drives the rotating disc 51 to rotate in the rotating process, the compacting member 7 at the bottom of the second mounting plate 66 starts to operate in the rotating process of the rotating disc 51.

Therefore, when the driving motor 41 starts to operate, the first compacting mechanism 5 and the second compacting mechanism 6 are simultaneously driven to move together, so that in the process of casting the sand mold 25, the first compacting mechanism 5 compacts and pre-tightens the sand at the center of the inner cavity of the mold 2 in the process of adding the sand on the surface of the sand core, and the compacting piece 7 at the bottom of the second compacting mechanism 6 compacts and pre-tightens the sand at two sides of the inner cavity of the mold 2, thereby completing the pre-tightening effect and improving the manufacturing efficiency.

Example 4: according to the fig. 1, 2 and 10, the two sides of the mold 2 are fixedly provided with a first movable rod 21, the top of the bottom plate 1 is fixedly provided with a side plate 11, one end of the first movable rod 21 penetrates through the side plate 11, one end of the first movable rod 21 is fixedly provided with a first baffle 23, the surface of the first movable rod 21 is sheathed with a first spring 22, one end of the first spring 22 is fixedly connected with the side plate 11, and one side of one of the second mounting plates 66 is fixedly provided with an impact piece 24.

In this embodiment, during the process of adding the molding sand, the striking member 24 will move along with the second mounting plate 66, and because the second mounting plate 66 will move along with the sliding block 68 during the movement, and because the sliding block 68 reciprocates while inside the limit rail 67, when the second mounting plate 66 drives the striking member 24 to move, the striking member 24 will strike the mold 2 reciprocally, and because the mold 2 is placed on top of the bottom plate 1, during the movement, a force will be applied to the first movable rod 21 on one side by using the mold 2, so that the first spring 22 on the surface of the movable rod will be compressed to contract.

Therefore, during the reciprocating movement of the striking member 24, and when the mold 2 is struck, the mold 2 is reversely pushed to reset due to the elasticity of the first springs 22, and further, the first springs 22 are sleeved on the surfaces of the first movable rods 21 on two sides of the mold 2, so that the mold 2 can reciprocate left and right during movement, and shake during movement, so that the molding sand gap is reduced during the pre-tightening working process, and loose casting is prevented.

Finally, after the metal is poured by the pouring gate 251, the air can be easily exhausted by the honeycomb plugs 254 inside the first air outlet 252 and the second air outlet 253.

The application method and the working principle of the device are as follows: the mould 2 is placed on the top of the bottom plate 1, the two sides of the mould are extruded and positioned by the first movable rod 21 matched with the first spring 22, then the sand core mould of the hollow pump body is placed inside the mould 2, and then the molding sand is gradually added in the adding process.

The driving motor 41 starts to move, and can drive the driving wheel 42 to rotate, so that the driving wheel 42 is limited by the mounting frame 47 and keeps stably rotating in the rotating process, the belt 43 starts to move, at the moment, the belt 43 also starts to drive the driven wheel 46 to rotate, and along with the rotation of the driven wheel 46, the rotating column 44 starts to rotate together, so that the driving gear 45 on the surface of the rotating rod of the rotating column 44 starts to rotate, and further, the meshed driven gear 61 starts to rotate, and further, because the rotating column 44 also drives the rotating disc 51 to rotate in the rotating process.

When the rotating disc 51 rotates, the rotating plate 52 is driven to rotate together, so that the first shaft lever 521 moves circularly around the rotating disc 51 as a center of a circle, and then the first fixing rod 531 can be used to drive the connecting frame 53 to move along with the movement of the first rotating rod, in the process, the connecting frame 53 drives the elastic member 54 to move up and down through the first fixing rod 531 at the bottom, and when the elastic member 54 moves, the first moving block 57 is driven to move through the first linkage rod 55, and when the first moving block 57 moves up and down, the first moving block 57 is limited by the limiting frame 56, so that the movement track of the first moving block 57 moves linearly when the first moving block 57 moves up and down.

Therefore, when the driving motor 41 starts to operate, the first compacting mechanism 5 and the second compacting mechanism 6 are simultaneously driven to move together, so that in the process of adding molding sand on the surface of the sand core in the process of casting the sand mold 25, the first compacting mechanism 5 can compact and pre-tighten the molding sand in the center of the cavity of the mold 2, and the compacting piece 7 at the bottom of the second compacting mechanism 6 can compact and pre-tighten the molding sand on two sides of the cavity of the mold 2.

In addition, in the process of the impact piece 24 following the second mounting plate 66 and in the process of impacting the mold 2, the mold 2 is reversely pushed to reset due to the elasticity of the first springs 22, and the first springs 22 are sleeved on the surfaces of the first movable rods 21 on two sides of the mold 2, so that the mold 2 can reciprocate left and right when in motion, and can shake when in motion, so that the molding sand gap is reduced in the pre-tightening working process, and loose casting is prevented.

When the air is exhausted, the honeycomb plugs 254 in the first air exhaust port 252 and the second air exhaust port 253 can be utilized to exhaust conveniently, and because of the existence of the two first springs 22, the first movable rod 21 can be manually pushed in the casting process, so that the mold 2 starts to shake reciprocally when being positioned on the surface of the bottom plate 1, and therefore, the air bubbles can be moved to the two air exhaust ports by using the shake, and the air exhaust effect can be achieved.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a well open pump body loam core sand mould honeycomb density exhaust preloading device, includes bottom plate (1), roof (3) and mould (2), actuating mechanism (4), its characterized in that are installed at roof (3) top: the driving mechanism (4) is connected with a first compacting mechanism (5), and second compacting mechanisms (6) are arranged on two sides of the first compacting mechanism (5);

the first compaction mechanism (5) comprises a rotating disc (51) and a connecting frame (53), a rotating plate (52) is fixedly connected to one side shaft end of the rotating disc (51), first fixing rods (531) are fixedly arranged at the top and the bottom of the connecting frame (53), the bottom of one first fixing rod (531) is fixedly connected with the center of the top of an elastic piece (54), a first shaft rod (521) is fixedly connected to the top of the other first fixing rod (531), one end of the first shaft rod (521) is fixedly connected with the rotating plate (52), first linkage rods (55) are rotatably arranged at two ends of the elastic piece (54), a moving plate (58) is rotatably connected to one end of the first linkage rod (55), a first moving block (57) is fixedly arranged at one end of the moving plate (58), and a first mounting plate (59) is fixedly arranged at one side of the first moving block (57).

The second compaction mechanism (6) comprises a driven gear (61) and a movable frame (64), a second linkage rod (62) is rotatably arranged on one side of the driven gear (61), a second shaft rod (621) is fixedly arranged at one end of the second linkage rod (62), one end of the second shaft rod (621) is rotatably connected with the top end of the movable frame (64), a second fixing rod (641) is fixedly arranged on the inner side of the movable frame (64), a fixing frame (65) is fixedly arranged at the bottom of the movable frame (64), the bottom end of the second fixing rod (641) sequentially penetrates through the movable frame (64) and the fixing frame (65), and a second mounting plate (66) is fixedly arranged at the bottom of the second fixing rod (641);

the driving mechanism (4) comprises a rotating column (44), a mounting frame (47) is movably mounted on the surface of two ends of the rotating column (44), the top of the mounting frame (47) is fixedly connected with the bottom of the top plate (3), two ends of the rotating column (44) are fixedly connected with a rotating disc (51), a driven wheel (46) is fixedly mounted in the middle of the rotating column (44), a belt (43) is sleeved on the surface of the driven wheel (46), a driving wheel (42) is sleeved on the top of the belt (43), a driving gear (45) is fixedly mounted on the surface of the rotating column (44), the driving gear (45) is meshed with a driven gear (61), two mounting frames (47) are fixedly mounted on the top of the top plate (3), the driving wheel (42) is rotatably connected with the mounting frame (47), and a driving motor (41) is mounted on the top of the top plate (3), and the output end of the driving motor (41) is fixedly connected with the shaft end of the driving wheel (42).

2. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 1, wherein the device is characterized in that: the first mounting plate (59) and the bottom of the second mounting plate (66) are fixedly provided with compaction pieces (7), the compaction pieces (7) comprise sleeves (71), second baffle plates (74) are slidably arranged inside the sleeves (71), one ends of the second baffle plates (74) are fixedly connected with second movable rods (73), one ends of the second movable rods (73) penetrate through the sleeves (71), one ends of the second movable rods (73) are fixedly connected with compaction plates (72), and third springs (75) are sleeved on the surfaces of the second movable rods (73).

3. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 2, wherein: first limiting frame (56) is arranged on one side of the first moving block (57), the first moving block (57) is slidably mounted inside the limiting frame (56), first limiting holes (561) are formed in two sides of the limiting frame (56), and the moving plate (58) is slidably mounted inside the first limiting holes (561).

4. A split pump body sand mould honeycomb density exhaust preloading device according to claim 3, characterized in that: the utility model discloses a fixed frame, including fixed frame (65), fixed frame (65) one side is provided with spacing track (67), spacing track (67) inside slidable mounting has sliding block (68), equal fixedly connected with second movable block (682) in sliding block (68) both sides, second movable block (682) are located fixed frame (65) inboard, just second movable block (682) slidable mounting is at second dead lever (641) surface, fixed frame (65) inboard is provided with second spring (69), second spring (69) cup joint at second dead lever (641) surface.

5. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 4, wherein the device is characterized in that: the top of the limiting track (67) is fixedly provided with a fixing plate (671), the top end of the fixing plate (671) is rotatably provided with a limiting rod (63), and one end of the limiting rod (63) is rotatably connected with the second linkage rod (62).

6. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 5, wherein the device is characterized in that: the second limiting hole (672) is formed in the bottom of the limiting track (67), the moving rod (681) is fixedly arranged at the bottom of the sliding block (68), and the bottom end of the moving rod (681) is slidably arranged in the second limiting hole (672).

7. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 1, wherein the device is characterized in that: the novel plastic casting mold is characterized in that a sand mold (25) is arranged inside the mold (2), a pouring gate (251) is arranged in the center of the top of the sand mold (25), a first exhaust port (252) and a second exhaust port (253) are arranged on two sides of the sand mold (25), and a honeycomb plug (254) is fixedly arranged at the top ends of the first exhaust port (252) and the second exhaust port (253).

8. The split pump body sand core sand type honeycomb density exhaust pre-tightening device according to claim 1, wherein the device is characterized in that: the novel plastic die is characterized in that first movable rods (21) are fixedly arranged on two sides of the die (2), side plates (11) are fixedly arranged on the top of the bottom plate (1), one end of each first movable rod (21) penetrates through the side plates (11), first baffle plates (23) are fixedly arranged at one ends of the first movable rods (21), first springs (22) are sleeved on the surfaces of the first movable rods (21), one ends of the first springs (22) are fixedly connected with the die (2), the other ends of the first springs (22) are fixedly connected with one side plate (11), and impact pieces (24) are fixedly arranged on one sides of the second mounting plates (66).