CN213256990U

CN213256990U - Sand box for casting

Info

Publication number: CN213256990U
Application number: CN202021370410.2U
Authority: CN
Inventors: 刘家琪; 刘文平
Original assignee: Shizuishan Bosheng Machinery Casting Co ltd
Current assignee: Shizuishan Bosheng Machinery Casting Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-05-25
Anticipated expiration: 2030-07-13

Abstract

The utility model provides a sand box for casting, including the box, negative pressure device, box one side is seted up and is let out the sand mouth, still set up the shutter on letting out the sand mouth, the shutter is connected with the box is articulated, negative pressure device includes first negative pressure nest of tubes, second negative pressure nest of tubes, first negative pressure nest of tubes sets up along a set of opposite face of box, second negative pressure nest of tubes sets up along another set of opposite face of box, one end of first negative pressure nest of tubes stretches into to the box inside, the other end is used for being connected with outside negative pressure equipment, one end of first negative pressure nest of tubes stretches into the box inside, the other end is used for being connected with outside negative pressure equipment, the shutter has been set up in this scheme, be used for opening or closing the sand mouth of letting out, after pouring, lift the film that covers on the sand box, make the incasement pressure release, the molding sand scatters, because the molding sand is mostly quartz sand or water glass, the mobility is, the molding sand can flow out automatically until the casting is exposed, and then the casting is taken out. The operation of turning over the box is replaced, and the danger caused by the box turning over is avoided.

Description

Sand box for casting

Technical Field

The utility model relates to a lost foam casting technical field especially relates to a sand box for casting.

Background

Usually the sand box is the cube structure, length, width, height size are uncertain, but minimum in addition 2, 3 meters, when the sand mould lost foam casting, after the model is buried underground, the box is full of the molding sand behind the sand filling, make the whole weight of box reach several hundred kilograms, after the casting is accomplished, adopt crane or overhead traveling crane reversal sand box among the prior art, pour out the molding sand, take out the foundry goods, this just has to set up special crane or overhead traveling crane, and the tilting work danger is very high, the molding sand is in medium and high temperature state, action range is big after the tilting, easily cause the molding sand to splash, injure personnel.

Disclosure of Invention

There is a need for a foundry sand box.

A casting sand box comprises a box body and a negative pressure device, wherein the box body is a square box body with an open top, one short side wall of the box body is absent to form a sand discharging opening, an opening and closing door is arranged on the sand discharging opening, one side wall of the opening and closing door is hinged with the box body, the other side wall of the opening and closing door is provided with a clamping piece, a clamping groove is further formed in the side wall of the box body, the clamping groove and the clamping piece are matched, so that the opening and closing door is clamped and connected with the box body, the negative pressure device comprises a first negative pressure pipe group and a second negative pressure pipe group, the first negative pressure pipe group is arranged along a group of opposite surfaces of the box body, the second negative pressure pipe group is arranged along the other group of opposite surfaces of the box body, the first negative pressure pipe group and the second negative pressure pipe group are arranged in a vertically staggered mode in the height direction of the box body, one end of the first negative pressure pipe group extends into the box body, the other end, the other end is used for being connected with external negative pressure equipment.

Preferably, the first negative pressure pipe group comprises a butt joint, a first distribution pipe and two first branch pipes, the first distribution pipe is arranged along the outer wall of the box body, the butt joint is arranged on the side wall of the first distribution pipe and communicated with the first distribution pipe, the end part of the butt joint is used for being connected with external negative pressure equipment, the two first branch pipes are arranged inside the box body and oppositely arranged on the two side walls of the box body, one end of each first branch pipe is plugged, the other end of each first branch pipe penetrates through the side wall of the box body to be communicated with the first distribution pipe, and a plurality of gap openings are formed in the side wall, facing the inner side of the box body, of each first branch pipe and are used.

Preferably, an auxiliary sealing layer is further arranged inside the box body, the auxiliary sealing layer is arranged close to the sand discharge port, the surface area of the auxiliary sealing layer is larger than the sectional area of the sand discharge port, and the auxiliary sealing layer covers the sand discharge port and a gap between the opening and closing door and the box body.

Preferably, the secondary sealing layer is a flexible sealing film.

Preferably, a plurality of bonding pieces are further arranged on the inner wall of the opening and closing door, the surface of the bottom of the box body and the side wall of the box body, so that the auxiliary sealing layer is bonded and connected with the opening and closing door or the box body.

The utility model discloses set up the door that opens and shuts for to opening or close and let out the sand mouth, pour the back that finishes, lift the film that covers on the sand box, make the incasement pressure release, the molding sand scatters, because the molding sand is mostly quartz sand or water glass, mobility is fine, opens the door that opens and shuts, and the molding sand can flow automatically, exposes to the foundry goods, take out can. This scheme has replaced the operation of turning over the case, has avoided the danger that the case that turns over brought.

Drawings

Fig. 1, 2 and 3 are a front view, a right side view and a top view of the sand box of the present invention.

Fig. 4 and 5 are cross-sectional views taken along a-A, B-B in fig. 1. The structure of the auxiliary sealing layer is not shown in this figure.

Fig. 6 is a cross-sectional view taken along C-C of fig. 2.

Fig. 7 is a schematic view of the first branch pipe.

In the figure: the container body 11, the opening/closing door 111, the engaging piece 112, the engaging groove 113, the first negative pressure tube group 21, the butt joint 211, the first distribution tube 212, the first branch tube 213, the slit port 214, the second negative pressure tube group 22, the auxiliary sealing layer 31, and the adhesive 41.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1 to 7, an embodiment of the present invention provides a sand box for casting, including a box body 11, a negative pressure device, where the box body 11 is a square box body 11 with an open top, one short side wall of the box body 11 is absent to form a sand discharge port, the sand discharge port is further provided with an opening/closing door 111, one side wall of the opening/closing door 111 is hinged to the box body 11, the other side wall is provided with a fastening member 112, and a fastening groove 113 is further provided on the side wall of the box body 11, which are matched with each other, so as to enable the opening/closing door 111 to be fastened to the box body 11, the negative pressure device includes a first negative pressure pipe group 21 and a second negative pressure pipe group 22, the first negative pressure pipe group 21 is disposed along one set of opposite surfaces of the box body 11, the second negative pressure pipe group 22 is disposed along the other set of opposite surfaces of the box body 11, and the first negative pressure pipe group 21 and the second negative pressure pipe group 22 are, inside first negative pressure nest of tubes 21's one end stretched into box 11, the other end was used for being connected with outside negative pressure equipment, and inside first negative pressure nest of tubes 21's one end stretched into box 11, the other end was used for being connected with outside negative pressure equipment.

Further, the first negative pressure pipe group 21 includes a butt joint 211, a first distribution pipe 212, and two first branch pipes 213, the first distribution pipe 212 is disposed along an outer wall of the tank 11, the butt joint 211 is disposed on a side wall of the first distribution pipe 212 and is communicated with the first distribution pipe 212, an end portion of the butt joint 211 is used for being connected with an external negative pressure device, the two first branch pipes 213 are disposed inside the tank 11 and are disposed on two side walls of the tank 11 relatively, one end of the first branch pipe 213 is blocked, the other end of the first branch pipe 213 penetrates through the side wall of the tank 11 to be communicated with the first distribution pipe 212, and a plurality of slit ports 214 are further opened on a side wall of the first branch pipe 213 facing the inside of the tank 11 to be communicated with. The joint 211, the first distribution pipe 212, and the two first branch pipes 213 may be rigid pipes.

Furthermore, an auxiliary sealing layer 31 is further arranged inside the box body 11, the auxiliary sealing layer 31 is arranged close to the sand discharge opening, the surface area of the auxiliary sealing layer 31 is larger than the sectional area of the sand discharge opening, and the auxiliary sealing layer 31 covers the sand discharge opening and a gap between the opening and closing door 111 and the box body 11. Because the opening and closing door 111 is connected with the box body 11 in the direction of mechanical locking, the problem of poor sealing performance exists, when the box body 11 is adsorbed under negative pressure, the opening and closing door 111 is a weak link of pressure leakage, the auxiliary sealing layer 31 is arranged and laid near the opening and closing door 111, before molding sand is filled, the opening and closing door 111 is locked, then the sealing layer is laid, when the sealing layer is laid, the bottom of the sealing layer at least covers 1/4 on the surface area of the bottom of the box body 11, at least 1/4 on the surface areas of two side walls are covered, and all sand leakage openings are covered, at the moment, the molding sand is filled, the sealing layer is covered, the sealing layer is ensured not to run, and therefore when the opening and closing door 111 is adsorbed under negative pressure, the problem of pressure leakage cannot occur.

Further, the auxiliary sealing layer 31 is a flexible sealing film.

Furthermore, a plurality of bonding pieces 41 are arranged on the inner wall of the opening and closing door 111, the bottom surface of the box body 11 and the side wall to bond and connect the auxiliary sealing layer 31 with the opening and closing door 111 or the box body 11. Ensuring the stability before the sealing layer is paved and the molding sand is filled after the paving.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

The above disclosure is only illustrative of the preferred embodiments of the present invention, which should not be taken as limiting the scope of the invention, but rather the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It will be understood by those skilled in the art that all or part of the above-described embodiments may be implemented and equivalents thereof may be made to the claims of the present invention while remaining within the scope of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be suitably combined to form other embodiments as will be apparent to those skilled in the art.

Claims

1. The utility model provides a sand box for casting which characterized in that: including box, negative pressure device, the box is the open square box in top, and a minor face lateral wall of box lacks to form and let out the sand mouth, still set up the door that opens and shuts on letting out the sand mouth, articulated being connected between a lateral wall of door and the box opens and shuts, another lateral wall sets up the fastener, still sets up the fastener groove on the box lateral wall, and the two matches to the block is connected between door and the box that makes to open and shut, negative pressure device includes first negative pressure nest of tubes, second negative pressure nest of tubes, and first negative pressure nest of tubes sets up along a set of opposite face of box, and second negative pressure nest of tubes sets up along another set of opposite face of box, and first negative pressure nest of tubes, second negative pressure nest of tubes dislocation set from top to bottom in the direction of height of box, and the one end of first negative pressure nest of tubes stretches into to inside the box, and the other end is used for being connected.

2. A foundry sand box as set forth in claim 1, wherein: the first negative pressure pipe group comprises a butt joint, a first distribution pipe and two first branch pipes, the first distribution pipe is arranged along the outer wall of the box body, the butt joint is arranged on the side wall of the first distribution pipe and communicated with the first distribution pipe, the end portion of the butt joint is used for being connected with external negative pressure equipment, the two first branch pipes are arranged inside the box body and are oppositely arranged on the two side walls of the box body, one end of each first branch pipe is plugged, the other end of each first branch pipe penetrates through the side wall of the box body to be communicated with the first distribution pipe, and a plurality of gap openings are formed in the side wall, facing the inner side of the box body, of each first branch pipe and.

3. A foundry sand box as set forth in claim 1, wherein: still set up auxiliary seal layer in box inside, auxiliary seal layer is close to the sand discharge opening and sets up, and the surface area of auxiliary seal layer is greater than the sectional area of sand discharge opening, and the auxiliary seal layer covers in the gap between sand discharge opening and the door that opens and shuts and the box.

4. A foundry sand box as set forth in claim 3, wherein: the auxiliary sealing layer is a flexible sealing film.

5. A foundry sand box as set forth in claim 1, wherein: still set up a plurality of bonds on the inner wall of sliding door, on the bottom of the case surface, on the lateral wall to with auxiliary sealing layer and sliding door or box adhesive bonding.