CN214557273U

CN214557273U - Die casting die of pump body

Info

Publication number: CN214557273U
Application number: CN202120709755.4U
Authority: CN
Inventors: 陆佳明; 陈建江; 何赛涛
Original assignee: Wuxi Guangshuo Precision Machinery Co ltd
Current assignee: Wuxi Guangshuo Precision Machinery Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-02
Anticipated expiration: 2031-04-07

Abstract

The application relates to a die casting die of pump body, including left mould, the right mould that is located left mould one side, set up the sprue gate on right mould, one side that left side mould is close to right mould is equipped with left mold core, one side that right side mould is close to left mould is equipped with left mold core complex right mold core, form the die cavity between left side mold core and the right mold core, left side mold core is including the pipeline mold core that is used for the shaping pipeline, the one end that the pipeline mold core dorsad die cavity is connected with shedder, be equipped with the heating rod in the pipeline mold core. The die sticking prevention device has the effect of reducing the occurrence of die sticking.

Description

Die casting die of pump body

Technical Field

The application relates to the field of die casting molds, in particular to a die casting mold of a pump body.

Background

The automobile vacuum pump mainly comprises a pump body, a rotor, blades, an air inlet one-way valve assembly, an air inlet and outlet and the like, wherein the pump body is an indispensable part of the automobile vacuum pump.

A pump body of an automobile vacuum pump is shown in figure 1 and comprises a main shell 10, wherein a pipeline 101 communicated with the inside of the main shell 10 is arranged on the side wall of the main shell 10, and one end, away from the main shell 10, of the pipeline 101 inclines downwards. The pump body is complex in structure, complex in machining process due to the adoption of milling, too high in cost and generally formed by die casting. Control of the surface temperature of die casting molds is important to produce high quality die cast parts.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: when molten aluminum water contacts a mold core for forming a pipeline, the temperature of the mold core is far lower than that of aluminum liquid, and the aluminum water is easy to solidify on the mold core, so that the defect of mold sticking can occur during demolding.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condition that the sticking die appears, this application provides the die casting die of a pump body.

The application provides a die casting die of pump body adopts following technical scheme:

the utility model provides a die casting die of pump body, includes left mould, is located the right mould of left mould one side, sets up the sprue gate on right mould, one side that left side mould is close to right mould is equipped with left mold core, one side that right side mould is close to left mould is equipped with left mold core complex right mold core, form the die cavity between left side mold core and the right mold core, left side mold core is including the pipeline mold core that is used for the shaping pipeline, the one end that pipeline mold core dorsad die cavity is connected with shedder, be equipped with the heating rod in the pipeline mold core.

By adopting the technical scheme, molten aluminum water enters the cavity, the heating rod heats the pipeline mold core, the temperature of the pipeline mold core is raised, the possibility of the aluminum water solidifying on the pipeline mold core is reduced, and the condition of mold sticking is further reduced; after the cavity is filled with the molten aluminum, the molten aluminum is cooled and molded, an operator opens the mold, and the demolding device drives the left mold core and the casting to separate

Optionally, the demolding device comprises a hydraulic cylinder connected to the left mold, a first connecting portion is fixed on a piston rod of the hydraulic cylinder, a limiting ring is formed at one end, close to the cavity, of the first connecting portion, a second connecting portion is arranged at one end, far away from the cavity, of the pipeline mold core, a limiting groove is formed in the second connecting portion, and the limiting ring is embedded in the limiting groove.

Through adopting above-mentioned technical scheme, spacing ring embedding spacing groove has realized the joint of first connecting portion head with the second connecting portion, makes things convenient for operating personnel to dismantle, maintains or changes.

Optionally, a guide plate is arranged on the left die, two guide plates are arranged on two sides of the second connecting portion respectively, guide grooves are formed in opposite faces of the guide plates, the guide grooves are arranged along the demolding direction of the pipeline mold core, guide strips are arranged on two sides of the second connecting portion respectively, and the guide strips are embedded in the guide grooves and are in sliding fit with the guide grooves.

Through adopting above-mentioned technical scheme, the cooperation of gib block and guide way provides the direction for the drawing of patterns of pipeline mold core, has improved the efficiency of drawing of patterns.

Optionally, the left mold core comprises a first mold core and a second mold core, and one sides of the first mold core and the second mold core, which are away from the cavity, are connected with a group of demolding devices.

By adopting the technical scheme, the demolding is dispersed, the demolding efficiency is greatly improved, and the product quality is improved.

Optionally, the second connecting portions of the first mold core and the second mold core are connected with cushions.

Through adopting above-mentioned technical scheme, when the right side mould was pressfitting on left mould under hydraulic equipment's the driving about, right side mould extrusion blotter, the blotter deformation has reduced the possibility that right mould collided the second connecting portion.

Optionally, a ejector rod seat and a plurality of guide pillars are arranged on one side of the left die, which is back to the right die, the guide pillars are arranged along the horizontal direction, and the guide pillars are slidably arranged on the ejector rod seat in a penetrating manner.

Through adopting above-mentioned technical scheme, the guide pillar provides the direction for the thimble drawing of patterns, improves the smoothness nature of drawing of patterns.

Optionally, a non-stick coating is arranged on the outer side wall of the pipeline mold core.

By adopting the technical scheme, the non-stick coating further reduces the possibility of sticking the die.

Optionally, a lifting lug is arranged on the left die.

By adopting the technical scheme, the lifting is convenient, and the carrying convenience is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heating rod is arranged on the heating rod to heat the pipeline mold core, so that the temperature of the pipeline mold core is raised, the possibility of aluminum water solidifying on the pipeline mold core is reduced, and the condition of mold sticking is further reduced;

2. the guide groove and the guide strip are arranged, so that the guide is provided for demolding of the pipeline mold core, and the demolding efficiency is improved;

3. the lifting lugs are arranged, so that the carrying is convenient.

Drawings

FIG. 1 is a schematic view showing the overall structure of a pump body of a vacuum pump for an automobile in the related art;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a left mold in the embodiment of the present application;

FIG. 4 is a cross-sectional view of a pipe mold core in an embodiment of the present application;

fig. 5 is a schematic structural view of the demolding device in the embodiment of the present application.

Description of reference numerals: 1. a right die; 11. a casting gate; 12. a right mold core; 2. a left die; 21. a left mold core; 211. a pipeline mold core; 212. a first mold core; 213. a second mold core; 214. a third mold core; 22. a guide post; 3. a jack rod seat; 31. a thimble; 5. a heating rod; 6. a cushion pad; 7. a demolding device; 71. a hydraulic cylinder; 72. mounting a plate; 73. a first connection portion; 74. a limiting ring; 75. a second connecting portion; 751. a guide strip; 76. a limiting groove; 8. a guide plate; 81. a guide groove; 10. a main housing; 101. a pipeline.

Detailed Description

The present application is described in further detail below with reference to figures 2-5.

The embodiment of the application discloses die casting die of pump body.

Referring to fig. 2 and 3, the die casting mold for the pump body comprises a right mold 1, a left mold 2 and a top rod seat 3 which are horizontally arranged in sequence. A casting opening 11 is arranged on the right die 1, and a right die core 12 is fixedly connected on one side of the right die 1 close to the left die 2. One side of the left die 2 close to the right die 1 is connected with a left die core 21 and an exhaust part, and the left die core 21 and the right die core 12 are matched with each other. When the die is closed, a cavity is formed between the die and the die, and the left die core 21 is also provided with a plurality of demoulding devices 7. The exhaust part is distributed around the left mold core 21 and communicated with the mold cavity. The ejector rod seat 3 is in sliding fit with the left die 2, and a plurality of ejector pins 31 are connected to the ejector rod seat 3. One end of the thimble 31 is fixed on the thimble seat 3, and the other end extends into the cavity. One side of the left die 2 back to the right die 1 is bolted with a plurality of guide posts 22, and the guide posts 22 are horizontally arranged and penetrate through the ejector rod seat 3. For the convenience of hoisting, two lifting lugs are fixedly connected to the left die 2, so that the carrying convenience is improved.

Referring to fig. 2 and 3, after the mold is closed, the operator pours molten aluminum into the casting gate 11, the molten aluminum flows into the cavity, and the air in the cavity is discharged from the exhaust portion as the liquid level of the molten aluminum rises. And (4) after the aluminum water is filled in the cavity, cooling and forming, and opening the mold by an operator. The demoulding device 7 drives the left mould core 21 to be separated from the casting, the ejector rod seat 3 slides on the guide post 22, and the ejector pin 31 is driven to eject the casting out of the mould cavity. The guide post 22 provides guidance for demoulding of the ejector pin 31, so that damage to a casting during demoulding is reduced, and the quality of the casting is improved.

Referring to fig. 2 and 3, the left mold core 21 includes a duct mold core 211 for molding the duct 101, and a first mold core 212, a second mold core 213, and a third mold core 214 for molding the main casing 10. One end of the pipeline mold core 211 extends into the cavity, and the other end is connected to the left mold 2 in a sliding manner.

Referring to fig. 3 and 4, the pipe mold core 211 is in an inclined column shape, and is in insertion fit with the pipe 101, and the heating rod 5 is inserted into the pipe mold core 211. Molten aluminum water enters the cavity, the heating rod 5 heats the pipeline mold core 211, the temperature of the pipeline mold core 211 is increased, the possibility that the molten aluminum water is solidified on the pipeline mold core 211 is reduced, and the condition of mold sticking is further reduced. The outer surface of the pipe mold core 211 is provided with a non-stick coating, so that the possibility of mold sticking is further reduced. The non-stick coating adopts a polytetrafluoroethylene layer, and the polytetrafluoroethylene has good thermal property and chemical property.

Referring to fig. 3 and 5, the demolding device 7 is provided with one pipe mold core 211, one first mold core 212 and one second mold core 213, so that the demolding efficiency is greatly improved, and the product quality is improved. Taking the pipe mold core 211 as an example, the demolding device 7 includes a hydraulic cylinder 71 fixedly connected to the left mold 2. An obliquely arranged mounting plate 72 is fixedly connected to the left die 2, a hydraulic cylinder 71 is bolted to the mounting plate 72, and a piston rod of the hydraulic cylinder 71 penetrates through the piston rod and is coaxially arranged with the pipeline die core 211. A first connecting portion 73 is fixedly connected to the piston rod of the hydraulic cylinder 71, and a limit ring 74 is formed at one end of the first connecting portion 73, which is away from the hydraulic cylinder 71.

Referring to fig. 2, a second connecting portion 75 is fixedly connected to an end of the pipe mold core 211 opposite to the cavity, and the cushion pad 6 is fixedly connected to both the second connecting portion 75 connected to the second mold core 213 and the third mold core 214. When right mould 1 pressfitting was on left mould 2 under hydraulic equipment's the driving, right mould 1 extrusion blotter 6, blotter 6 deformation has reduced the possibility that right mould 1 collided second connecting portion 75.

Referring to fig. 5, a limiting groove 76 is formed in one end, away from the pipe mold core 211, of the second connecting portion 75, the limiting ring 74 is embedded in the limiting groove 76, and during demolding, the piston rod of the hydraulic cylinder 71 pulls the first connecting portion 73, and the first connecting portion 73 pulls the second connecting portion 75 through the limiting ring 74, so that the pipe mold core 211 is driven to move away from the casting gradually and break away from the casting. Spacing ring 74 imbeds spacing groove 76, has realized the joint of first connecting portion 73 head with second connecting portion 75, makes things convenient for operating personnel to dismantle, maintains or changes.

Referring to fig. 3 and 5, a guide plate 8 is fixedly connected to the left die 2, and one guide plate 8 is disposed on each of both sides of the second connecting portion 75. Guide grooves 81 are formed on the opposite surfaces of the two guide plates 8, and the guide grooves 81 are arranged along the length direction of the pipeline mold core 211. Guide bars 751 are formed on two sides of the second connecting portion 75, and the guide bars 751 are embedded in the guide grooves 81 and are in sliding fit with the guide grooves 81. The hydraulic cylinder 71 forces the second link 75 to slide away from the casting and the guide bar 751 slides within the guide slot 81. The cooperation of the guide bars 751 and the guide grooves 81 provides guidance for demolding of the pipeline mold core 211, and demolding efficiency is improved.

The implementation principle of the die casting die of the pump body in the embodiment of the application is as follows: after the mold is closed, an operator pours molten aluminum into the casting gate 11, the molten aluminum flows into the cavity, and air in the cavity is discharged from the exhaust part along with the rise of the liquid level of the molten aluminum. Molten aluminum water enters the cavity, the heating rod 5 heats the pipeline mold core 211, the temperature of the pipeline mold core 211 is increased, the possibility that the molten aluminum water is solidified on the pipeline mold core 211 is reduced, and the condition of mold sticking is further reduced. And (4) after the aluminum water is filled in the cavity, cooling and forming, and opening the mold by an operator. The demoulding device 7 drives the left mould core 21 to be separated from the casting, the ejector rod seat 3 slides on the guide post 22, and the ejector pin 31 is driven to eject the casting out of the mould core. The guide post 22 provides a guide for demoulding of the ejector pin 31, and the demoulding smoothness is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a die casting die of pump body, includes left mould (2), right mould (1) that is located left mould (2) one side, sets up casting gate (11) on right mould (1), one side that left mould (2) are close to right mould (1) is equipped with left mold core (21), one side that right mould (1) is close to left mould (2) is equipped with and left mold core (21) complex right mold core (12), form die cavity, its characterized in that between left mold core (21) and right mold core (12): left side mold core (21) is including pipeline (101) mold core (211) that are used for shaping pipeline (101), the one end of pipeline (101) mold core (211) die cavity dorsad is connected with shedder (7), be equipped with heating rod (5) in pipeline (101) mold core (211).

2. A die-casting mold for a pump body according to claim 1, characterized in that: demoulding device (7) is including connecting pneumatic cylinder (71) on left mould (2), be fixed with first connecting portion (73) on the piston rod of pneumatic cylinder (71), first connecting portion (73) are close to the one end shaping spacing ring (74) of die cavity, the one end that the die cavity was kept away from in pipeline (101) mold core (211) is equipped with second connecting portion (75), spacing groove (76) have been seted up on second connecting portion (75), spacing ring (74) inlay in spacing groove (76).

3. A die-casting mold for a pump body according to claim 2, characterized in that: be equipped with deflector (8) on left side mould (2), deflector (8) all are equipped with one, two in the both sides of second connecting portion (75) open on deflector (8) face in opposite directions has guide way (81), the drawing of patterns direction setting of pipeline (101) mold core (211) is followed in guide way (81), the both sides of second connecting portion (75) all are equipped with gib block (751), gib block (751) inlay in guide way (81) and with guide way (81) sliding fit.

4. A die-casting mold for a pump body according to claim 1, characterized in that: the left mold core (21) comprises a first mold core (212) and a second mold core (213), and one sides of the first mold core (212) and the second mold core (213) departing from the cavity are connected with a group of demolding devices (7).

5. A die-casting mold for a pump body according to claim 3, wherein: the second connecting parts (75) on the first mold core (212) and the second mold core (213) are connected with cushion pads (6).

6. A die-casting mold for a pump body according to claim 1, characterized in that: the left die (2) is back to one side of the right die (1) and is provided with a ejector rod seat (3) and a plurality of guide pillars (22), the guide pillars (22) are arranged along the horizontal direction, and the guide pillars (22) are slidably arranged on the ejector rod seat (3).

7. A die-casting mold for a pump body according to claim 1, characterized in that: and a non-stick coating is arranged on the outer side wall of the mold core (211) of the pipeline (101).

8. A die-casting mold for a pump body according to claim 1, characterized in that: and a lifting lug is arranged on the left die (2).