CN211101526U

CN211101526U - Crankcase pump box pressure casting mould

Info

Publication number: CN211101526U
Application number: CN201922277478.XU
Authority: CN
Inventors: 陆佳明; 何赛涛; 齐兆河; 陈建江
Original assignee: Wuxi Guangshuo Precision Machinery Co ltd
Current assignee: Wuxi Guangshuo Precision Machinery Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-07-28
Anticipated expiration: 2029-12-17

Abstract

The utility model belongs to the technical field of the technique of casting mould and specifically relates to a crankshaft pump box pressure casting mould is related to, which comprises a core, the core is pegged graft with the through-hole inner wall cooperation of product, is equipped with a plurality of U type holes in the core, and every U type hole extends a through-hole correspondingly, is equipped with inlet opening and apopore on the core, and inlet opening and apopore are direct with two the U type holes of distance the farthest respectively, connect the intercommunicating pore between the adjacent U type hole. Cooling water flows through all the U-shaped holes after entering the mold core from the water inlet holes and finally flows out of the water outlet holes, and the flowing cooling water flows into the water inlet holes after heat dissipation, so that circulation is formed, and because a water inlet pipe does not need to be connected to each U-shaped hole, the water consumption in unit time is reduced, and the water-saving mold has the advantage of saving water; only need bore the blind hole in the core, then can form U type hole in inserting the blind hole with the water diversion plate, reduced the degree of difficulty in the core direct processing U type hole.

Description

Crankcase pump box pressure casting mould

Technical Field

The utility model belongs to the technical field of the technique of casting mould and specifically relates to a bent axle pump box pressure casting mould is related to.

Background

During the production of a casting mold, some casting parts with large local wall thickness are often cast, the cooling speed of the parts with large wall thickness is slow, and if measures for improving the cooling speed are not taken, the shrinkage and loosening phenomenon can be generated, and the product quality is influenced.

The utility model discloses a utility model patent that grant publication number is CN203484601U discloses a casting mould cooling pin, set up the hole of installation cooling pin on the great position of casting mould shaping casting wall thickness, install the cooling pin downthehole, in inserting the blind hole of cooling pin with ventilation cooling pipe one end again, one end switch-on cooling air equipment delivery outlet in addition, at the fashioned in-process of casting, cooling air equipment cools off the great department of casting wall thickness size through ventilation cooling pipe, accelerate cooling rate, guarantee the shaping quality.

Fig. 1 shows a crankcase pump housing, as shown in fig. 2, except for the upper and lower surfaces, the other three surfaces of the crankcase pump housing are respectively provided with a first opening 3, a second opening 4 and a third opening 5, and the position where the wall thickness of the remaining fourth surface is larger is provided with a row of through holes 2 (the through holes 2 and the first openings 3 are respectively located at the two opposite ends of the product), so as to reduce the product defects, the gate is generally directly communicated with the cavity around the row of through holes 2. Because the temperature of the aluminum liquid in the cavity around the row of through holes is highest (because the aluminum liquid is close to the sprue), the corresponding part on the molded product needs to be cooled, but the cooling efficiency of air cooling is limited, so that the water cooling is used for replacing the air cooling. Because each through hole needs to be provided with one water cooling part, and the number of the through holes is large, the water consumption is large, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bent axle pump box pressure casting mould, its advantage that has the water consumption that reduces the cooling die.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a bent axle pump box pressure casting mould, includes the core, the core is pegged graft with the through-hole inner wall cooperation of product, is equipped with a plurality of U type holes in the core, and every U type hole extends a through-hole correspondingly in, is equipped with inlet opening and apopore on the core, and inlet opening and apopore are direct with two U type holes of distance farthest respectively, connect the intercommunicating pore between the adjacent U type hole.

Through adopting above-mentioned technical scheme, cooling water flows through all U type holes after getting into the core from the inlet opening, flows out from the apopore at last, and the cooling water that flows out flows into the inlet opening again after the heat dissipation to form the circulation, owing to need not to connect into the inlet tube on every U type hole, reduced the water consumption in the unit interval, consequently have the advantage of using water wisely. The number of the through holes of the general crankcase pump box body is 3 and 4, and in addition, the flow speed of cooling water is high, so that the cooling water can basically synchronously cool all the through holes on the crankcase pump box body.

Preferably, the U-shaped hole is a blind hole with a built-in water distribution plate.

Through adopting above-mentioned technical scheme, only need bore the blind hole in the core, then can form U type hole in inserting the blind hole with the water diversion plate, reduced the degree of difficulty in the core direct processing U type hole.

Preferably, the water diversion plate is a copper straight plate.

Through adopting above-mentioned technical scheme, the water diversion plate of copper has the advantage that heat transfer efficiency is high, and the heat transfer of core is for the water diversion plate, and the cooling water takes away the heat on the water diversion plate, has improved the radiating efficiency of core.

Preferably, a sliding block is fixed on the mold core, the sliding block seals one end, far away from the through hole, of each U-shaped hole, a hydraulic cylinder is fixed on the outer wall of the mold, a piston rod of the hydraulic cylinder is connected with the sliding block, and the mold core is located between the sliding block and a product.

By adopting the technical scheme, before a product is molded, the piston rod of the hydraulic cylinder is used for pushing the mold core, so that the mold core is inserted into the mold cavity, and the mold core and the mold cavity are matched to form the through hole on the crankcase pump box body; after the product is molded, the piston rod of the hydraulic cylinder pulls the mold core away from the through hole, so that the product can be smoothly ejected out of the mold cavity by the ejector pin.

Preferably, one end of the sliding block, which is connected with the piston rod of the hydraulic cylinder, is provided with a water inlet interface and a water outlet interface, a first pipe cavity and a second pipe cavity are arranged in the sliding block, the water inlet interface is communicated with the water inlet hole through the first pipe cavity, and the water outlet interface is communicated with the water outlet hole through the second pipe cavity.

By adopting the technical scheme, the pipe cavity in the sliding block is communicated with the water hole in the core, so that the water pipe is connected to the sliding block which is convenient for connecting the pipe.

Preferably, a core is inserted into the first opening, the second opening and the third opening of the product in a matching manner, and the inner cavity of the product is filled with the four cores.

By adopting the technical scheme, the four cores, the upper die core and the lower die core surround the forming cavity, and after the product is formed in the forming cavity, the four cores are withdrawn from the inner cavity of the product, so that the product can be smoothly demoulded.

Preferably, the mold core inserted into the through hole and the first opening is respectively and fixedly connected with a sliding block, two opposite sides of the outer wall of the mold are respectively provided with a hydraulic cylinder, piston rods of the two hydraulic cylinders are respectively connected with the two sliding blocks, and the piston rods of the two hydraulic cylinders are parallel to each other; the mold core that pegs graft in the second opening of product, the third opening also respectively with a slider fixed connection, all be equipped with the inclined hole on the slider that second opening and third opening are connected, the one end that the inclined hole is towards the movable mould is closer than the one end of inclined hole towards the cover half apart from the product, sliding fit has the straight-bar in the inclined hole, straight-bar and movable mould fixed connection, have on the cover half and supply the straight-bar male deep trouth.

Through adopting above-mentioned technical scheme, only need two pneumatic cylinders to drive the core removal of through-hole and first opening part, the cost is reduced, and the core of second opening, third opening department can be driven by the straight-bar when the movable mould moves: when the mold is closed, the movable mold moves towards the fixed mold, the movable mold pushes the straight rod into the deep groove, and the straight rod pushes the mold core into the second opening and the third opening; when the mold is opened, the movable mold moves away from the fixed mold, the movable mold pulls the straight rod reversely, and the straight rod pulls the mold core out of the second opening and the third opening.

Preferably, the cores inserted into the first opening, the second opening and the third opening are provided with water-passing U-shaped holes, and all the U-shaped holes extend into the product.

Through adopting above-mentioned technical scheme, realized the quick cooling to first opening, second opening, the third opening perisporium of product.

To sum up, the utility model discloses a beneficial technological effect does:

1. cooling water flows through all the U-shaped holes after entering the mold core from the water inlet holes and finally flows out of the water outlet holes, and the flowing cooling water flows into the water inlet holes after heat dissipation, so that circulation is formed, and because a water inlet pipe does not need to be connected to each U-shaped hole, the water consumption in unit time is reduced, and the water-saving mold has the advantage of saving water;

2. only need bore the blind hole in the core, then can form U type hole in inserting the blind hole with the water diversion plate, reduced the degree of difficulty in the core direct processing U type hole.

Drawings

FIG. 1 is a front view of a crankcase of a prior art crankcase pump;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective view of a die for pressure casting a crankcase of a crankshaft pump in an embodiment;

FIG. 4 is a right side view of a crankshaft pump housing pressure casting mold in an embodiment;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is a partial cross-sectional view of a crankshaft pump housing pressure casting mold in an embodiment;

FIG. 7 is an enlarged view of portion A of FIG. 5;

FIG. 8 is a schematic view of the connection of the slider with the water inlet and outlet ports.

In the figure, 1, product; 2. a through hole; 3. a first opening; 4. a second opening; 5. a third opening; 6. a straight rod; 7. a core; 8. a communicating hole; 9. a U-shaped hole; 10. a water diversion plate; 11. a water inlet hole; 12. a water outlet hole; 13. a water inlet interface; 14. a water outlet interface; 15. a first lumen; 16. a second lumen; 17. a slider; 18. a piston rod; 19. an inclined hole; 20. moving the mold; 21. fixing a mold; 22. deep grooves; 23. and a mold core.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): fig. 3 is the utility model discloses a crankshaft pump box pressure casting mould, including cover half 21 and movable mould 20.

As shown in fig. 5, the fixed mold 21 and the movable mold 20 both have a mold core 23 therein, the fixed mold 21 is slidably provided with four mold cores 7, and the four mold cores 7 and the two mold cores 23 enclose a cavity. One of the cores 7 is inserted in the through hole 2 of the product 1 in a matching manner, the other three cores 7 are respectively inserted in the first opening 3, the second opening 4 and the third opening 5 of the product 1 in a matching manner, and the four cores 7 fill the inner cavity of the product 1.

As shown in fig. 5, the cores 7 inserted into the through hole 2, the first opening 3, the second opening 4, and the third opening 5 of the product 1 are respectively fixedly connected to a slide block 17, and the fixed mold 21 has a sliding slot for the slide block 17 to slide. Two opposite sides of the outer wall of the die are respectively fixed with a hydraulic cylinder, piston rods 18 of the two hydraulic cylinders are respectively connected with two sliding blocks 17, the piston rods 18 of the two hydraulic cylinders are parallel to each other, and the mold core 7 is positioned between the sliding blocks 17 and the product 1.

As shown in fig. 6, the two remaining sliders 17 each have an inclined hole 19, an end of the inclined hole 19 facing the movable mold 20 is closer to the product 1 than an end of the inclined hole 19 facing the fixed mold 21, the straight rod 6 is inserted into the inclined hole 19 in a fitting manner, and the straight rod 6 can slide along a central axis direction of the inclined hole 19. The straight rod 6 penetrates into the movable die 20 and is fixed relative to the movable die 20, the fixed die 21 is provided with a deep groove 22 for inserting the straight rod 6, and the straight rod 6 is not blocked by the inner wall of the deep groove 22 when moving.

As shown in fig. 5, before the product 1 is molded, the piston rod 18 of the hydraulic cylinder is used to push the core 7, so that the core 7 is inserted into the cavity, thereby molding the melt in the cavity out of the through hole 2 of the crankcase; after the product 1 is molded, the piston rod 18 of the hydraulic cylinder pulls the mold core 7 away from the through hole 2, so that the product 1 can be smoothly ejected out of the mold cavity by the ejector pin.

As shown in fig. 6, only two hydraulic cylinders are needed to drive the through hole 2 and the core 7 at the first opening 3 to move, so that the cost is reduced, and the cores 7 at the second opening 4 and the third opening 5 are driven by the straight rod 6 when the movable mold 20 moves: during die assembly, the movable die 20 moves towards the fixed die 21, the movable die 20 pushes the straight rod 6 towards the deep groove 22, and the straight rod 6 pushes the core 7 towards the second opening 4 and the third opening 5; when the mold is opened, the movable mold 20 moves away from the fixed mold 21, the movable mold 20 pulls the straight rod 6 reversely, and the straight rod 6 pulls the mold core 7 out of the second opening 4 and the third opening 5.

As shown in fig. 5, the cores 7 inserted into the through hole 2, the first opening 3, the second opening 4 and the third opening 5 of the product 1 are provided with U-shaped holes 9 for water passage, and all the U-shaped holes 9 extend into the product 1. The forming method of the U-shaped hole 9 on the core 7 comprises the following steps: firstly, drilling a blind hole on the surface of the mold core 7, then inserting the copper water distribution plate 10 which is straight and long into the blind hole, and leaving a gap between the water distribution plate 10 and the bottom of the blind hole. The water diversion plate 10 made of copper has the advantage of high heat transfer efficiency, the heat of the mold core 7 is transferred to the water diversion plate 10, and the cooling water takes away the heat on the water diversion plate 10, so that the heat dissipation efficiency of the mold core 7 is improved.

As shown in fig. 5, all U-shaped holes 9 are provided on the surface of the core 7 facing away from the product 1, and the slider 17 closes the end of all U-shaped holes 9 remote from the product 1.

As shown in fig. 7, three U-shaped holes 9 (corresponding to the number of the through holes 2) are formed in the core 7 inserted into the through holes 2 of the product 1, each U-shaped hole 9 correspondingly extends into one through hole 2, a water inlet hole 11 and a water outlet hole 12 are formed in the core 7, the water inlet hole 11 and the water outlet hole 12 are respectively and directly communicated with the two U-shaped holes 9 which are farthest away, and a communication hole 8 is connected between the adjacent U-shaped holes 9.

As shown in fig. 7, the cooling water flows through all the U-shaped holes 9 after entering the core 7 from the water inlet holes 11, and finally flows out from the water outlet holes 12, and the flowing cooling water flows into the water inlet holes 11 after heat dissipation, so as to form circulation. The number of the through holes 2 of the general crankcase pump box body is 3 and 4, and in addition, the flow speed of cooling water is high, so that the cooling water can basically synchronously cool all the through holes 2 on the crankcase pump box body.

As shown in fig. 8, one end of the sliding block 17 connected to the piston rod 18 of the hydraulic cylinder has a water inlet port 13 and a water outlet port 14, a first pipe cavity 15 and a second pipe cavity 16 are processed in the sliding block 17, the water inlet port 13 is communicated with the water inlet hole 11 through the first pipe cavity 15, and the water outlet port 14 is communicated with the water outlet hole 12 through the second pipe cavity 16.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a bent axle pump box pressure casting mould, includes core (7), its characterized in that: the mold core (7) is in matched insertion connection with the inner wall of the through hole (2) of the product (1), a plurality of U-shaped holes (9) are arranged in the mold core (7), each U-shaped hole (9) correspondingly extends into one through hole (2), a water inlet hole (11) and a water outlet hole (12) are formed in the mold core (7), the water inlet hole (11) and the water outlet hole (12) are respectively communicated with the two U-shaped holes (9) which are farthest away, and a communication hole (8) is connected between every two adjacent U-shaped holes (9).

2. The crank pump case pressure casting mold as claimed in claim 1, wherein: the U-shaped hole (9) is a blind hole with a built-in water distribution plate (10).

3. The crank pump case pressure casting mold as claimed in claim 2, wherein: the water distribution plate (10) is a copper straight plate.

4. The crank pump case pressure casting mold as claimed in claim 2, wherein: a sliding block (17) is fixed on the mold core (7), the sliding block (17) seals one end, far away from the through hole (2), of each U-shaped hole (9), a hydraulic cylinder is fixed on the outer wall of the mold, a piston rod (18) of the hydraulic cylinder is connected with the sliding block (17), and the mold core (7) is located between the sliding block (17) and the product (1).

5. The crank pump case pressure casting mold as claimed in claim 4, wherein: one end that slider (17) and piston rod (18) of pneumatic cylinder are connected is equipped with into water interface (13) and play water interface (14), is equipped with first lumen (15) and second lumen (16) in slider (17), and interface (13) of intaking is put through with inlet opening (11) through first lumen (15), and play water interface (14) are put through with apopore (12) through second lumen (16).

6. The crank pump case pressure casting mold as claimed in claim 4, wherein: a core (7) is inserted into the first opening (3), the second opening (4) and the third opening (5) of the product (1) in a matched mode, and the inner cavity of the product (1) is filled with the four cores (7).

7. The crank pump case pressure casting mold as claimed in claim 6, wherein: the through hole (2) and the core (7) inserted in the first opening (3) are respectively fixedly connected with a sliding block (17), two opposite sides of the outer wall of the die are respectively provided with a hydraulic cylinder, piston rods (18) of the two hydraulic cylinders are respectively connected with the two sliding blocks (17), and the piston rods (18) of the two hydraulic cylinders are parallel to each other; the second opening (4) of product (1), core (7) of pegging graft in third opening (5) also respectively with a slider (17) fixed connection, all be equipped with inclined hole (19) on slider (17) that second opening (4) and third opening (5) are connected, one end that inclined hole (19) were towards movable mould (20) is closer than one end distance product (1) of inclined hole (19) orientation cover half (21), sliding fit has straight-bar (6) in inclined hole (19), straight-bar (6) and movable mould (20) fixed connection, cover half (21) are last to have and to supply straight-bar (6) male deep troughed (22).

8. The crank pump case pressure casting mold as claimed in claim 6, wherein: and U-shaped holes (9) for water are formed in the inserted cores (7) in the first opening (3), the second opening (4) and the third opening (5), and all the U-shaped holes (9) extend into the product (1).