CN213496338U

CN213496338U - Drainage piece of mould

Info

Publication number: CN213496338U
Application number: CN202022454624.4U
Authority: CN
Inventors: 王强
Original assignee: Shaoxing City Zhenyang Machinery Co ltd
Current assignee: Shaoxing City Zhenyang Machinery Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-22
Anticipated expiration: 2030-10-29

Abstract

The application relates to a drainage piece of mould, it is including inserting the drainage piece body of establishing in slip casting mouth department, the one end of drainage piece body is located outside the slip casting mouth, the other end of drainage piece body stretches into the mould die cavity, drainage piece body is used for guiding aluminium liquid buffering and gets into the mould die cavity. The speed of aluminium liquid when getting into the mould die cavity has been cushioned through the setting of toper filter screen in this application, has reduced the probability that takes place the high altitude and splash when aluminium liquid gets into the mould die cavity, has reduced the height that aluminium liquid pours into the die cavity into to a certain extent to produce the probability that the gassing and oxidation pressed from both sides the sediment when having reduced aluminium liquid and having got into the die cavity, and then improved the quality of foundry goods production.

Description

Drainage piece of mould

Technical Field

The application relates to the field of aluminum casting, in particular to a drainage piece of a mold.

Background

Sand casting is a traditional casting process that uses sand as a main molding material to make a casting mold. In the process flow of sand casting, the manufactured sand core needs to be placed into cavities of two separated molds, aluminum liquid is poured into the molds after mold closing, and an aluminum casting is formed in the molds after the aluminum liquid is cooled.

The utility model discloses a chinese utility model patent that publication number is CN203091673U discloses a high density mould casting box, including box, injected hole and dead lever, the box is the rectangle structure, the injected hole sets up the upper portion of box, the dead lever welding is in the both ends of box, the last mouth diameter ratio end opening diameter in injected hole is big. When the device is used for casting the mold, aluminum liquid is poured into the box body through the grouting holes, and the aluminum liquid is cooled in the box body to form a casting.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: when the device is used for casting a high-height casting, a cavity matched with the casting is formed in the box body, and a large height difference is formed between the bottom of the cavity and the grouting holes, so that when aluminum liquid is poured into the cavity in the box body through the grouting holes, the aluminum liquid can splash in the cavity and generate bubbles and oxidation slag inclusion, and then the defects of tiny bubbles, slag holes and the like exist in the interior of the cooled aluminum liquid, so that certain influence is generated on the quality of the casting.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that aluminium liquid takes place to splash and produce bubble, cinder hole in the die cavity, this application provides a drainage piece of mould.

The application provides a drainage piece of mould adopts following technical scheme:

the utility model provides a drainage piece of mould, is including inserting the drainage piece body of establishing in slip casting mouth department, the one end of drainage piece body is located outside the slip casting mouth, the other end of drainage piece body stretches into the mould die cavity, drainage piece body is used for guiding aluminium liquid buffering to get into the mould die cavity.

Through adopting above-mentioned technical scheme, when the casting work of the higher foundry goods of needs carries out, insert the drainage spare and establish in the entering slip casting mouth, then pour into aluminium liquid to the mould cavity through the drainage spare, aluminium liquid cushions under the effect of drainage spare and gets into the mould cavity, speed when further having cushioned aluminium liquid and getting into the mould cavity has reduced aluminium liquid and has got into the probability that splashes and produce the bubble in the mould cavity, and then improves the quality of foundry goods production.

Preferably, the drainage piece body is set to be a conical filter screen, the bottom of the conical filter screen extends into the mold cavity, and the top of the conical filter screen extends out of the grouting opening.

By adopting the technical scheme, when workers pour the aluminum liquid into the mold cavity through the conical filter screen, the aluminum liquid passes through the filter holes in the conical filter screen and is simultaneously subjected to the resistance of the conical filter screen, so that the effect of buffering the aluminum liquid to enter the mold cavity is achieved, and the probability of splashing and bubble generation when the aluminum liquid enters the mold cavity is reduced.

Meanwhile, in the process that the aluminum liquid flows into the mold cavity through the conical filter screen, the aluminum liquid can react with oxygen in the air to oxidize and slag, the conical filter screen further plays a role in filtering the oxidized and slag-bonded aluminum liquid, and the production quality of castings is improved.

Preferably, the drainage piece body is arranged to be a conical filter screen, and the diameter of the top of the conical filter screen is larger than that of the grouting opening.

Through adopting above-mentioned technical scheme, toper filter screen top diameter is greater than the setting of slip casting mouth diameter, has reduced the probability that the toper filter screen drops from slip casting mouth department and gets into the mould die cavity greatly.

Preferably, a single-layer area and a double-layer area are arranged on the conical filter screen along the circumferential direction of the conical filter screen, and the single-layer area and the double-layer area are connected with each other.

By adopting the technical scheme, in the process that the aluminum liquid flows into the mold cavity through the conical filter screen, the aluminum liquid can react with oxygen in the air to further oxidize and slag. The double-layer area has better filtering effect on aluminum slag in the aluminum liquid compared with the single-layer area, and the single-layer area has higher filtering speed on the aluminum liquid compared with the double-layer area. The single-layer area and the double-layer area are matched for use, so that the filtering effect of the conical filter screen on the aluminum slag in the aluminum liquid is ensured, and the filtering speed of the conical filter screen on the aluminum slag in the aluminum liquid is improved.

Preferably, the size of the filtering holes of the single-layer area is the same as that of the filtering holes of the double-layer area, and the filtering holes of the two layers of the double-layer area are communicated.

By adopting the technical scheme, the arrangement that the two layers of filtering holes on the double-layer area are communicated accelerates the speed of the aluminum liquid passing through the double-layer area and reduces the probability of the aluminum liquid being blocked on the double-layer area to a certain extent compared with the arrangement that the two layers of filtering nets are staggered. The filtering holes in the single-layer area and the double-layer area are arranged in the same size, so that the conical filtering nets can be conveniently processed and produced in batches.

Preferably, the cone angle of the conical filter screen is in the range of 36-44 degrees.

By adopting the technical scheme, when the cone angle of the conical filter screen is 36-44 degrees, the speed of the aluminum liquid entering the mold cavity through the conical filter screen is in a better state, the filtering effect of the conical filter screen on the aluminum liquid is ensured, and the working efficiency of adding the aluminum liquid into the mold cavity is improved.

Preferably, the length of the conical filter screen extending into the mold cavity is one sixth to one fifth of the height of the mold cavity.

Through adopting above-mentioned technical scheme, the setting in the mould die cavity is stretched into to the toper filter screen, has further reduced the difference in height between toper filter screen least significant end and the mould die cavity bottom surface, and then has reduced aluminium liquid and has left the speed that the toper filter screen drips on the mould die cavity bottom surface, has further reduced aluminium liquid and has taken place the probability that splashes and produce the bubble in getting into the mould die cavity, and then has improved the quality of foundry goods production.

Preferably, the surface of the conical filter screen is provided with a refractory fiber paste heat-insulating layer.

Through adopting above-mentioned technical scheme, when the in-process of aluminium liquid inflow mould die cavity, because the slip casting mouth comprises metal material usually, the setting of fire-resistant fibre paste heat preservation has reduced the area that aluminium liquid is direct and the slip casting mouth contact, and then has reduced aluminium liquid and the heat of slip casting mouth lateral wall heat conduction loss.

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

1. by the arrangement of the conical filter screen, the speed of the molten aluminum entering the mold cavity is buffered, the probability of splashing and bubble generation of the molten aluminum entering the mold cavity is reduced, and the production quality of castings is improved;

2. by the arrangement of the single-layer area and the double-layer area, the molten aluminum has better filtering speed and filtering effect when entering the die cavity through the conical filter screen;

3. through the setting of refractory fiber paste heat preservation, the area that aluminium liquid is direct with the slip casting mouth contact has been reduced, and then has reduced aluminium liquid and the heat of slip casting mouth lateral wall heat conduction loss.

Drawings

Fig. 1 is a schematic perspective view of the whole of embodiment 1 of the present application;

FIG. 2 is a schematic cross-sectional view of the grout port of FIG. 1 showing the internal structure at the upper and lower molds;

fig. 3 is a schematic sectional view of a grouting opening in embodiment 2 of the present application, showing a specific structure at a conical filter screen.

Description of reference numerals: 100. a work table; 110. a lower die; 120. an upper die; 130. a mold cavity; 140. a support pillar; 150. an installation table; 160. a cylinder; 170. mounting a plate; 180. a column; 190. a grouting port; 200. a conical filter screen; 210. a single layer region; 220. a double-layer area; 230. an abutting portion; 240. a clamping part.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The ground is provided with a workbench 100, the top surface of the workbench 100 is fixedly connected with a lower die 110, the lower die 110 is connected with an upper die 120 matched with the lower die 110 in a sliding manner, a die cavity 130 is formed between the upper die 120 and the lower die 110, and the workbench 100 is provided with a driving assembly for driving the upper die 120 to move along the vertical direction. The driving assembly comprises four supporting columns 140, the four supporting columns 140 are fixedly connected to the workbench 100, the top ends of the four supporting columns 140 are fixedly connected with an installation table 150, an air cylinder 160 is fixedly connected to the installation table 150, a mounting plate 170 is fixedly connected to a piston rod of the air cylinder 160, four upright columns 180 are fixedly connected to the mounting plate 170, and one end of each upright column 180 is fixedly connected to the top surface of the upper die 120, and the other end of each upright column 180 is fixedly connected to the bottom surface of the mounting plate 170. The top surface of the upper mold 120 is fixedly connected with two grouting ports 190 for pouring aluminum liquid, and the grouting ports 190 are communicated with the mold cavity 130.

The embodiment of the application discloses drainage piece of mould.

Example 1

Referring to fig. 2, the drainage member comprises a drainage member body inserted into the injection port 190, the drainage member body is used for guiding the molten aluminum to enter the mold cavity 130 in a buffering manner, the drainage member body is a conical filter screen 200, the conical filter screen 200 is arranged in an inverted manner, the cone angle range of the conical filter screen 200 is 36-44 degrees, and the conical filter screen 200 is inserted into the injection port 190. The bottom of the conical filter screen 200 extends into the mold cavity 130, and the length of the conical filter screen 200 extending into the mold cavity 130 is one sixth to one fifth of the maximum height of the mold cavity 130. (the length of the conical filter screen 200 actually extending into the mold cavity 130 can be satisfied that the bottom end of the conical filter screen 200 is close to the bottom surface of the mold cavity 130, so as to achieve the purpose of reducing the probability of high-altitude splashing of the aluminum liquid, and further reduce the probability of bubbles and oxidation slag inclusion generated by the aluminum liquid). The top of the conical filter screen 200 extends out of the grouting opening 190, the diameter of the top of the conical filter screen 200 is larger than that of the grouting opening 190, and the height of the top of the conical filter screen 200 extending out of the grouting opening 190 is one eighth to one seventh of the length of the conical filter screen 200.

The conical filter screen 200 is provided with a single-layer area 210 and a double-layer area 220 along the circumferential direction of the conical filter screen 200, the circumferential proportion occupied by the double-layer area 220 is smaller than that occupied by the single-layer area 210, the single-layer area 210 and the double-layer area 220 are integrally formed, the double-layer area 220 is formed by folding the single-layer area 210, filter holes are formed in the single-layer area 210 and the double-layer area 220, and the two filter holes in the double-layer area 220 are correspondingly communicated with each other. The surfaces of both the single layer region 210 and the double layer region 220 are coated with a refractory fiber paste insulation layer.

The implementation principle of the embodiment 1 is as follows: when casting work of a casting with a higher height is required, the air cylinder 160 is started, the piston rod of the air cylinder 160 pushes the mounting plate 170 to descend, the mounting plate 170 further pushes the upper die 120 to descend through the upright post 180, the upper die 120 is further meshed with and pressed against the lower die 110 on the workbench 100, then the conical filter screen 200 is inserted into the grouting port 190 on the top surface of the upper die 120, then a worker pours aluminum liquid into the die cavity 130 through the conical filter screen 200, when the aluminum liquid in the die cavity 130 is about to abut against the bottom end of the conical filter screen 200, the conical filter screen 200 is taken out, then the aluminum liquid is supplemented into the grouting port 190, and the casting can be obtained after the aluminum liquid is cooled.

Embodiment 2, this embodiment is different from embodiment 1 in that, referring to fig. 3, a fixing component for snap-fitting with the peripheral wall of the grouting port 190 is installed at the top of the drainage member body. The fixing component comprises an abutting part 230 and a clamping part 240, the abutting part 230 is annular, the abutting part 230 is connected with the top surface of the conical filter screen 200, and the bottom surface of the abutting part 230 abuts against the top surface of the grouting port 190. The clamping portion 240 is connected to the outer circumference of the bottom surface of the abutting portion 230, the clamping portion 240 abuts against the outer circumferential wall of the top of the injection port 190, and the abutting portion 230, the clamping portion 240 and the conical filter screen 200 are integrally formed.

The implementation principle of the drainage piece of this application embodiment mould does: when the conical filter screen 200 is required to be inserted into the grouting opening 190, the abutting part 230 on the conical filter screen 200 abuts against the top surface of the grouting opening 190, then the clamping part 240 is clamped into the grouting opening 190, the stability of the conical filter screen 200 during pouring of aluminum liquid is greatly enhanced, and the falling probability of the conical filter screen 200 is greatly reduced in the process of pouring the aluminum liquid.

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. A drainage piece of mould which characterized in that: the aluminum liquid injection mold comprises a drainage piece body inserted at an injection port (190), one end of the drainage piece body is located outside the injection port (190), the other end of the drainage piece body extends into a mold cavity (130), and the drainage piece body is used for guiding aluminum liquid to enter the mold cavity (130) in a buffering mode.

2. The die drain of claim 1, wherein: the drainage piece body is arranged to be a conical filter screen (200), the bottom of the conical filter screen (200) extends into the die cavity (130), and the top of the conical filter screen (200) extends out of the grouting opening (190).

3. The die drain of claim 2, wherein: the diameter of the top of the conical filter screen (200) is larger than that of the grouting opening (190).

4. The die drain of claim 2, wherein: the conical filter screen (200) is provided with a single-layer area (210) and a double-layer area (220) along the circumferential direction of the conical filter screen (200), and the single-layer area (210) is connected with the double-layer area (220).

5. The die drain of claim 4, wherein: the size of the filtering holes of the single-layer area (210) is the same as that of the filtering holes of the double-layer area (220), and the filtering holes of the two layers on the double-layer area (220) are communicated.

6. The die drain of claim 2, wherein: the cone angle range of the conical filter screen (200) is 36-44 degrees.

7. The die drain of claim 6, wherein: the length of the conical filter screen (200) extending into the die cavity (130) is one sixth to one fifth of the height of the die cavity (130).

8. The die drain of claim 7, wherein: and a fire-resistant fiber paste heat-insulating layer is arranged on the surface of the conical filter screen (200).