CN220901836U - Lost foam casting device for medium and large-sized steel castings - Google Patents

Abstract

The utility model provides a lost foam casting device for a middle-large cast steel, which relates to the technical field of workpiece casting and comprises a lower die, wherein an upper die is arranged above the lower die, a filling pipe penetrating to the bottom is fixed at the middle part of the top of the upper die, through holes penetrating to the bottom are formed in the four corners of the top of the upper die, annular grooves are formed in the bottom of the filling pipe and the bottoms of the four through holes, a casting cavity is formed in the top of the lower die, and an inner cavity is formed in the bottom of the casting cavity.

Description

Lost foam casting device for medium and large-sized steel castings

Technical Field

The utility model relates to the technical field of workpiece casting, in particular to a lost foam casting device for a middle-large-sized steel casting.

Background

Lost foam casting (also called full mold casting) is a novel casting method which is to combine paraffin or foam models with similar size and shape as castings into model clusters by bonding, brush refractory coating, dry, then embed in dry quartz sand for vibration molding, pour under negative pressure to gasify the models, occupy the model positions by liquid metal, solidify and cool to form castings.

However, when the lost foam casting method is adopted to cast the middle and large-sized cast steel, casting is needed in a mould, when the foam model is placed in the mould, the foam model is carbonized due to the high temperature of molten metal, stains on the inner wall of the mould after casting are not timely removed, the outer surface of the next cast part is uneven, and meanwhile, a casting port part is solidified, a corrugated shape is formed, and serious recess is generated, so that the outer surface of the model is uneven.

Disclosure of utility model

(One) solving the technical problems

The utility model aims to solve the problems in the prior art and provides a medium-large-sized lost foam casting device for steel castings.

(II) technical scheme

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a well large-scale cast steel lost foam casting device, includes the bed die, the top of bed die is provided with the bed die, the top of bed die is located the middle part and is fixed with the notes material pipe that runs through to the bottom, the top of bed die is located four corners and all sets up the through-hole that runs through to the bottom, the ring channel has all been seted up to the bottom of notes material pipe and the bottom of four through-holes, pour the chamber has been seted up at the top of bed die, pour the bottom in chamber and seted up the inner chamber.

Preferably, the butt joint groove has been seted up at the top of bed die, the bottom of last mould is fixed with spacing frame, spacing frame block is in the inside of butt joint groove.

Preferably, the top of the upper die is fixed with hanging rings near the edges of two sides.

Preferably, a jacking plate is arranged on the inner bottom surface of the pouring cavity, and four outer surfaces of the jacking plate are mutually attached to the inner wall of the pouring cavity.

Preferably, a hydraulic cylinder is fixed on the middle part of the inner bottom surface of the inner cavity, and the output end of the hydraulic cylinder is fixed at the bottom of the jacking plate.

Preferably, the bottom of inner chamber is located four corners and all is fixed with the uide bushing, and a plurality of all sliding connection has the fly leaf between the inner wall of uide bushing.

Preferably, the top of a plurality of fly leaves all is fixed with the guide bar, and a plurality of the top of guide bar all slides and runs through to the outside of uide bushing, and fixes in the bottom of jacking board.

(III) beneficial effects

1. In the utility model, in actual use, the annular grooves are formed at the bottoms of the through holes on the upper die and the bottoms of the injection pipes, so that after the plate in the pouring cavity is solidified and formed in the pouring cavity in pouring, corrugated solidification is generated in the annular grooves, subsequent polishing by people is facilitated, and the outer surface of the plate is prevented from being sunken.

2. According to the utility model, after the mold is formed, the hydraulic cylinder is started, so that the jacking plate can be driven to jack up, the formed mold is conveniently taken out by people, then when the jacking plate jacks up, dirt generated by the inner wall of the pouring cavity can be scraped through mutual lamination of the four side inner walls of the jacking plate and the inner wall of the pouring cavity, and when the jacking plate moves up, the guide rod can be guided through mutual lamination of the outer surface of the movable plate and the inner wall of the guide sleeve, so that the jacking of the jacking plate is more stable.

Drawings

Fig. 1 is a schematic diagram of a front view and a perspective view of a lost foam casting device for a medium-large-sized steel casting;

FIG. 2 is a schematic view of a partial sectional perspective structure of a lost foam casting device for a medium-and-large-sized steel casting according to the present utility model;

Fig. 3 is an enlarged view of the present utility model at a in fig. 2.

In the figure:

1. A lower die; 2. an upper die; 3. a material injection pipe; 4. a hanging ring; 5. a through hole; 6. a butt joint groove; 7. an annular groove; 8. a limit frame; 9. a hydraulic cylinder; 10. a jacking plate; 11. an inner cavity; 12. pouring the cavity; 13. a guide sleeve; 14. a guide rod; 15. a movable plate.

Detailed Description

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

As shown in fig. 1-3, a lost foam casting device for a medium-large cast steel comprises a lower die 1, wherein an upper die 2 is arranged above the lower die 1, a filling pipe 3 penetrating to the bottom is fixed at the middle part of the top of the upper die 2, through holes 5 penetrating to the bottom are formed in the four corners of the top of the upper die 2, annular grooves 7 are formed in the bottom of the filling pipe 3 and the bottoms of the four through holes 5, a pouring cavity 12 is formed in the top of the lower die 1, and an inner cavity 11 is formed in the bottom of the pouring cavity 12;

when the novel casting mold is used, annular grooves 7 are formed in the bottoms of the through holes 5 and the bottoms of the material injection pipes 3 on the upper mold 2, so that after the plate inside the casting cavity 12 is solidified and formed during casting, corrugated solidification is generated inside the annular grooves 7, subsequent polishing by people is facilitated, and the outer surface of the plate is prevented from being sunken.

Further, the butt joint groove 6 has been seted up at the top of bed die 1, and the bottom of going up mould 2 is fixed with spacing frame 8, and spacing frame 8 block is in the inside of butt joint groove 6 for the butt joint department can be sealed when last mould 2 and bed die 1 mutually block through spacing frame 8 and the mutual block of butt joint groove 6.

In order to facilitate the movement of the upper die 2 during the stripping or pressing, hanging rings 4 are fixed at the top of the upper die 2 near the edges of both sides;

When the lifting device is used, the lifting plate 10 is arranged on the inner bottom surface of the pouring cavity 12, the four side outer surfaces of the lifting plate 10 are mutually attached to the inner wall of the pouring cavity 12, the hydraulic cylinder 9 is fixed on the inner bottom surface of the inner cavity 11 at the middle part, the output end of the hydraulic cylinder 9 is fixed at the bottom of the lifting plate 10, the guide sleeves 13 are fixed at the four corners of the bottom of the inner cavity 11, the movable plates 15 are slidably connected between the inner walls of the guide sleeves 13, the guide rods 14 are fixedly arranged at the tops of the movable plates 15, and the tops of the guide rods 14 slidably penetrate through the outer sides of the guide sleeves 13 and are fixed at the bottom of the lifting plate 10.

After the mold is formed, the hydraulic cylinder 9 is started, so that the jacking plate 10 can be driven to jack upwards, the formed mold is convenient to take out by people, and then when the jacking plate 10 jacks upwards, dirt generated by the inner walls of the pouring cavity 12 can be scraped by mutually attaching the inner walls of the four sides of the jacking plate 10 with the inner walls of the pouring cavity 12;

When the jacking plate 10 moves upwards, the outer surface of the movable plate 15 and the inner wall of the guide sleeve 13 are mutually attached, so that the guide rod 14 can be guided, and the jacking of the jacking plate 10 is more stable.

The theory of operation, when in actual use, set up ring channel 7 with a plurality of through-holes 5 bottoms on the upper mould 2 and the bottom of notes material pipe 3, make can be when pouring, pour the inside plate solidification shaping back of chamber 12, produce ripple form solidification in ring channel 7 inside, be convenient for people's follow-up polishing, prevent that the plate surface from producing sunken form, after the mould shaping through starting pneumatic cylinder 9, make can drive jacking plate 10 and lift up, thereby make things convenient for people to take out fashioned mould, then when jacking plate 10 is to the top, through the laminating each other of four side inner walls of jacking plate 10 and the inner wall of pouring chamber 12, thereby can be with the striking off that pouring chamber 12 inner wall produced, and when jacking plate 10 moves to the top, through the surface of fly leaf 15 and the inner wall of uide bushing 13 each other, thereby can lead to guide bar 14, make jacking plate 10's jacking more stable, when upper mould 2 and lower mould 1 dock each other, through the mutual block of spacing frame 8 and butt joint groove 6, make the butt joint department of upper mould 2 and lower mould 1 can seal each other.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a middle-size large-scale cast steel lost foam casting device, includes bed die (1), its characterized in that: the top of bed die (1) is provided with mould (2), the top of going up mould (2) is located the middle part and is fixed with injection pipe (3) that run through to the bottom, the top of going up mould (2) is located four corners and all sets up through-hole (5) that run through to the bottom, annular channel (7) have all been seted up to the bottom of injection pipe (3) and the bottom of four through-holes (5), pour chamber (12) have been seted up at the top of bed die (1), pour the bottom in chamber (12) and seted up inner chamber (11).

2. The lost foam casting device for the medium and large-sized steel castings according to claim 1, wherein: the top of bed die (1) has seted up butt joint groove (6), the bottom of last mould (2) is fixed with spacing frame (8), spacing frame (8) block is in the inside of butt joint groove (6).

3. The lost foam casting device for the medium and large-sized steel castings according to claim 1, wherein: hanging rings (4) are fixed at the positions, close to the edges of the two sides, of the top of the upper die (2).

4. A medium and large scale cast steel lost foam casting device according to claim 3, wherein: the inner bottom surface of the pouring cavity (12) is provided with a jacking plate (10), and four outer surfaces of the jacking plate (10) are mutually attached to the inner wall of the pouring cavity (12).

5. The lost foam casting device for the medium and large steel castings according to claim 4, wherein: the inner bottom surface of the inner cavity (11) is positioned at the middle part and is fixedly provided with a hydraulic cylinder (9), and the output end of the hydraulic cylinder (9) is fixed at the bottom of the jacking plate (10).

6. The lost foam casting device for the medium and large steel castings according to claim 5, wherein: the bottom of the inner cavity (11) is positioned at four corners and is fixedly provided with guide sleeves (13), and movable plates (15) are slidably connected between the inner walls of the guide sleeves (13).

7. The lost foam casting device for the medium and large steel castings according to claim 6, wherein: the tops of the movable plates (15) are respectively fixed with a guide rod (14), and the tops of the guide rods (14) are respectively and slidably penetrated to the outer side of the guide sleeve (13) and are fixed at the bottom of the jacking plate (10).