CN216441629U

CN216441629U - Die casting die for cooling water pump

Info

Publication number: CN216441629U
Application number: CN202122824125.4U
Authority: CN
Inventors: 王华生; 花群
Original assignee: Hana Industries Co ltd
Current assignee: Hana Industries Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-06
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a die casting die for a cooling water pump, which comprises an upper die holder, wherein the center of the upper surface of the upper die holder is fixedly connected with a liquid injection seat, and the upper surface of the upper die holder is provided with an exhaust channel; the upper surface of the lower die base is fixedly connected with a fixed die; the movable unit comprises a positioning frame and an exhaust seat, the positioning frame is fixedly connected to the upper surface of the upper die base, the lower end of the positioning frame is fixedly connected with the exhaust seat, and the exhaust seat is movably connected to the inner portion of the upper die base. This kind of die casting die for cooling water pump is at die holder and die holder closure back, and the die-casting raw materials flows into work piece shaping intracavity by annotating the liquid mouth, promotes the loose ring through hydraulic stem or cylinder and moves down, makes the movable post drive the exhaust seat and extrudees the raw materials, and the vertical reciprocating motion of hydraulic stem promotion loose ring can promote the exhaust seat and discharge the gas that work piece shaping chamber exists from exhaust passage, reduces the rejection rate because of the gas pocket causes.

Description

Die casting die for cooling water pump

Technical Field

The utility model belongs to the field of die-casting molds, and particularly relates to a die-casting mold for a cooling water pump.

Background

The die-casting die is used for casting metal parts and is a tool for completing a die-casting process on a special die-casting die forging machine. The basic process of die casting comprises the following steps: molten metal is cast at low speed or high speed and filled into the cavity of the die, the die has a movable cavity surface, and the molten metal is pressurized and forged along with the cooling process of the molten metal, so that the defects of shrinkage cavity and shrinkage porosity of a blank are eliminated, the internal structure of the blank reaches broken crystal grains in a forging state, and the comprehensive mechanical property of the blank is obviously improved.

Pressure casting is a special casting method, which is characterized in that liquid or semi-liquid metal fills a cavity at a higher speed under the action of high pressure and solidifies under the action of pressure to obtain a casting, workpieces produced by pressure casting are often scrapped due to air holes, the air holes are generated for a plurality of reasons, and when the quality problem of the product is solved, the problem that how to quickly and correctly take measures to reduce the rejection rate caused by the air holes is often solved is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a die-casting die for a cooling water pump, which can discharge gas in a cavity in the die-casting process and reduce the rejection rate caused by air holes.

In order to achieve the above purpose, the solution of the utility model is:

a die casting die for a cooling water pump comprises an upper die holder, a lower die holder and a movable unit, wherein the center of the upper surface of the upper die holder is fixedly connected with a liquid injection seat, and the upper surface of the upper die holder is also provided with an exhaust channel; the upper surface of the lower die holder is fixedly connected with a fixed die; the movable unit comprises a positioning frame and an exhaust seat, the positioning frame is fixedly connected to the upper surface of the upper die base, the lower end of the positioning frame is fixedly connected with the exhaust seat, and the exhaust seat is movably connected to the inner portion of the upper die base.

The positioning frame comprises a support column, a reset column and a movable column, wherein the support column is fixedly connected to the upper surface of the upper die base, and the lower ends of the reset column and the movable column are fixedly connected to the upper surface of the exhaust seat.

The upper ends of the support columns and the reset columns are fixedly connected with support rings, and the outer walls of the movable columns vertically penetrate through the support rings and then are connected with movable rings.

The supporting columns, the resetting columns and the movable columns are the same in number, and the supporting columns, the resetting columns and the movable columns are sequentially and annularly distributed on the outer side of the liquid injection seat.

The reset column comprises a fixed cylinder, the fixed cylinder is fixedly connected to the lower surface of the support ring, the inner wall of the fixed cylinder is slidably connected with a movable cylinder, the inner portion of the movable cylinder is slidably connected with a guide column, the bottom end of the guide column is connected with one end of a spring, and the other end of the spring is fixedly connected with the inner portion of the movable cylinder.

The inner wall of the fixed cylinder is fixedly connected with a coil spring, the inner part of the fixed cylinder is rotatably connected with a moving part, and one end of the coil spring is fixedly connected with one end of a rotating shaft of the moving part.

The exhaust seat comprises a top ring, a pressure plate and a plurality of stand columns, wherein the top ends of the stand columns are fixed on the lower surface of the top ring, and the lower surface of each stand column is fixedly connected with the pressure plate.

The upper surface of the top ring is provided with a plurality of openings, the upper surface of the top ring is abutted to one end of the upper die base, and the top of the upper surface of the top ring is flush with the upper surface of the upper die base.

The lower surface of the exhaust seat is matched with the size of part of a cast workpiece, and the size of the lower surface of the exhaust seat is matched with the size of the fixed die on the upper surface of the lower die seat.

The exhaust channel is communicated with a workpiece forming cavity formed between the upper die base and the lower die base, and the inner wall of the exhaust channel is a smooth surface.

After the scheme is adopted, the utility model has the beneficial effects that:

(1) according to the utility model, by designing the matching structure between the upper die holder and the lower die holder, after the upper die holder and the lower die holder are closed, die-casting raw materials flow into the workpiece forming cavity from the liquid injection port, the movable ring is pushed to move downwards by the hydraulic rod or the air cylinder, so that the movable column drives the exhaust seat to extrude the raw materials, the hydraulic rod pushes the movable ring to vertically reciprocate, the exhaust seat can be pushed to exhaust gas stored in the workpiece forming cavity from the exhaust channel, and the rejection rate caused by air holes is reduced;

(2) according to the utility model, through designing the specific structures of the exhaust seat and the positioning frame, the exhaust seat can be pulled back into the upper die base under the action of the reset column, so that the influence on the forming of a workpiece is avoided, the lifting speed of the exhaust seat can be reduced when the exhaust seat is lifted up under the tensile force of the spring in the reset column under the action of the coil spring, the influence of the lifting of the exhaust seat on the air pressure in the workpiece forming cavity is reduced, the external air is prevented from being sucked into the workpiece forming cavity along with the movement of the exhaust seat, and the quality and the yield of the workpiece are improved.

Drawings

FIG. 1 is a schematic elevational view of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a schematic view of the exhaust seat of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 5 is an enlarged schematic view of B in fig. 4.

Reference numerals:

1. an upper die holder; 2. a lower die holder; 3. a movable unit;

4. a positioning frame; 5. an exhaust seat;

6. a support pillar; 7. a reset column; 8. a movable post;

9. a support ring; 10. a movable ring;

11. a top ring; 12. a column; 13. a platen;

14. a fixed cylinder; 15. a movable barrel; 16. a guide post;

17. a spring; 18. a coil spring; 19. and a movable member.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1, the utility model provides a die casting mold for a cooling water pump, which comprises an upper mold base 1, a lower mold base 2 and a movable unit 3, wherein a liquid injection seat and an exhaust channel of the mold are arranged on the upper surface of the upper mold base 1, a fixed mold is fixed on the upper surface of the lower mold base 2 and used for containing casting liquid for workpiece forming, in cooperation with fig. 2, the movable unit 3 consists of a positioning frame 4 and an exhaust seat 5, the exhaust seat 5 is fixed at the lower end of the positioning frame 4 and is movable inside the upper mold base 1, and the positioning frame 4 is fixed on the upper surface of the upper mold base 1; the upper die holder 1 and the lower die holder 2 are used for forming workpieces, and under the pushing action of a hydraulic rod or an air cylinder, the positioning frame 4 pushes the exhaust seat 5 to repeatedly extrude casting metal liquid so as to discharge mixed gas from an exhaust channel.

With the cooperation of fig. 2 and 4, the support column 6, the reset column 7 and the movable column 8 form the positioning frame 4, the support column 6 is fixed on the upper surface of the upper die base 1, the reset columns 7 and the movable column 8 are fixed on the upper surface of the exhaust seat 5, and the reset columns 7 help the lower surface of the exhaust seat 5 to be lifted, so that the surface integrity of a workpiece is guaranteed.

In practical application, the support ring 9 provides a fulcrum for fixing the exhaust seat 5, the support ring 9 is fixed at the upper ends of the support column 6 and the reset column 7, the outer wall of the movable column 8 vertically penetrates through the support ring 9 and is fixed with one end of the movable ring 10, and when the hydraulic rod pushes the movable ring 10 to move, the movable column 8 can restrict the movable path of the movable ring 10, so that the exhaust seat 5 can stably move.

As a preferred embodiment of the present invention, the supporting columns 6, the resetting columns 7 and the movable columns 8 have the same number, and the plurality of supporting columns 6, the resetting columns 7 and the movable columns 8 are sequentially and annularly distributed on the outer side of the liquid injection seat, so that the structure of the device is more stable.

As a preferred embodiment of the present invention, as shown in fig. 3, the exhaust seat 5 includes a top ring 11, a plurality of columns 12 and a platen 13, wherein the columns 12 are fixed on the lower surface of the top ring 11, the top ring 11 can contact with one end of the upper die holder 1 to fix the position of the exhaust seat 5, the top ring 11 transmits pressure to the platen 13 through the columns 12, and the platen 13 is fixed on the lower surface of the columns 12 to facilitate extrusion of the metal casting liquid in the workpiece forming cavity.

As a preferred embodiment of the present invention, as shown in fig. 4 and 5, the return post 7 comprises a fixed barrel 14, a movable barrel 15, a guide post 16, a spring 17, a coil spring 18 and a movable member 19, wherein the fixed barrel 14 is fixed on the lower surface of the supporting ring 9, thereby restricting the moving path of the movable barrel 15; a movable cylinder 15 slides on the inner wall of the fixed cylinder 14, a guide post 16 slides in the movable cylinder 15, a spring 17 is fixed at one end of the guide post 16, the other end of the spring 17 is fixed in the movable cylinder 15, and the spring 17 pulls the movable cylinder 15 to ascend by taking one end of the guide post 16 as a fulcrum when the movable cylinder 15 moves downwards.

The coil spring 18 can push the movable element 19 to rotate, the coil spring 18 is fixed on the inner wall of the fixed cylinder 14, the movable element 19 rotates inside the fixed cylinder 14, the plurality of movable elements 19 continuously reduce the lifting speed of the movable cylinder 15 in a collision mode when the movable cylinder 15 is pulled to lift, one end of the coil spring 18 is connected with one end of the rotating shaft of the movable element 19, and the coil spring 18 is convenient to control the movable element 19 to rotate and reset after the movable cylinder 15 moves downwards.

It can be understood that the inner wall of exhaust passage is comparatively smooth to the fluctuation of casting molten metal avoids remaining the adhesion, and the work piece shaping chamber that forms between exhaust passage and upper die base 1 and the die holder 2 is linked together and is convenient for the outer row of gas of processing man-hour, and the lower surface configuration of exhaust seat 5 matches with the partial size of casting work piece, and the lower surface size of exhaust seat 5 then with the size looks adaptation of 2 upper surface fixed die of die holder, helps improving the leakproofness of device to casting liquid.

In practical application, the one end contact that is equipped with a plurality of openings and upper die base 1 at the upper surface of top ring 11 is convenient for fixed to exhaust seat 5, and the lifting of exhaust seat 5 of being convenient for makes the casting effect stable in the one end of upper die base 1, top ring 11 and upper surface height parallel and level of upper die base 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the terminology used in the description presented above should not be understood as necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a die casting die for cooling water pump which characterized in that: the injection molding device comprises an upper die holder (1), a lower die holder (2) and a movable unit (3), wherein the center of the upper surface of the upper die holder (1) is fixedly connected with an injection seat, and the upper surface of the upper die holder (1) is also provided with an exhaust channel; the upper surface of the lower die holder (2) is fixedly connected with a fixed die; the movable unit (3) comprises a positioning frame (4) and an exhaust seat (5), the positioning frame (4) is fixedly connected to the upper surface of the upper die base (1), the lower end of the positioning frame (4) is fixedly connected with the exhaust seat (5), and the exhaust seat (5) is movably connected to the inner portion of the upper die base (1).

2. The die casting mold for a cooling water pump as claimed in claim 1, wherein: the locating rack (4) comprises a supporting column (6), a resetting column (7) and a movable column (8), wherein the supporting column (6) is fixedly connected to the upper surface of the upper die base (1), and the lower ends of the resetting column (7) and the movable column (8) are fixedly connected to the upper surface of the exhaust seat (5).

3. The die casting mold for a cooling water pump as claimed in claim 2, wherein: the support column (6) and the upper end of the reset column (7) are fixedly connected with a support ring (9), and the outer wall of the movable column (8) vertically penetrates through the support ring (9) and then is connected with a movable ring (10).

4. The die casting mold for a cooling water pump as claimed in claim 2, wherein: the number of the supporting columns (6), the number of the resetting columns (7) and the number of the movable columns (8) are the same, and the supporting columns (6), the resetting columns (7) and the movable columns (8) are sequentially and annularly distributed on the outer side of the liquid injection seat.

5. The die casting mold for a cooling water pump as claimed in claim 4, wherein: reset post (7) is including solid fixed cylinder (14), gu fixed cylinder (14) fixed connection is at the lower surface of support ring (9), the inner wall sliding connection of solid fixed cylinder (14) has a movable cylinder (15), and the inside sliding connection of movable cylinder (15) has guide post (16), the one end of bottom coupling spring (17) of guide post (16), the other end of spring (17) and the inside fixed connection of movable cylinder (15).

6. The die casting mold for a cooling water pump as claimed in claim 5, wherein: the inner wall of the fixed cylinder (14) is fixedly connected with a coil spring (18), the inner part of the fixed cylinder (14) is rotatably connected with a movable piece (19), and one end of the coil spring (18) is fixedly connected with one end of a rotating shaft of the movable piece (19).

7. The die casting mold for a cooling water pump as claimed in claim 1, wherein: the exhaust seat (5) comprises a top ring (11), a pressure plate (13) and a plurality of stand columns (12), the top ends of the stand columns (12) are fixed on the lower surface of the top ring (11), and the lower surface of each stand column (12) is fixedly connected with the pressure plate (13).

8. The die casting mold for a cooling water pump as claimed in claim 7, wherein: the upper surface of top ring (11) is provided with a plurality of openings, and the upper surface butt of top ring (11) is in the one end of upper die base (1), and the upper surface top height of top ring (11) and the upper surface parallel and level of upper die base (1).

9. The die casting mold for a cooling water pump as claimed in claim 1, wherein: the structure of the lower surface of the exhaust seat (5) is matched with the size of part of a cast workpiece, and the size of the lower surface of the exhaust seat (5) is matched with the size of the fixed die on the upper surface of the lower die holder (2).

10. A die casting mold for a cooling water pump as claimed in claim 1, wherein: the exhaust channel is communicated with a workpiece forming cavity formed between the upper die holder (1) and the lower die holder (2), and the inner wall of the exhaust channel is a smooth surface.