CN217749252U - A sand box for casting cylindrical castings - Google Patents

Abstract

The utility model relates to the technical field of casting flasks, and discloses a casting flask for cylindrical castings, comprising a flask body, the flask body comprising an upper flask and a lower flask, the upper flask and the lower flask. The boxes are set as cylinders with the same specifications, the upper sand box and the lower sand box are connected up and down correspondingly, the first fixing ears are installed on both sides of the upper sand box, and the second sand box is installed on both sides of the lower sand box. Fixing ears, the first fixing ears and the second fixing ears are both set as fixing blocks with through holes, and limit bars are provided on the sides of the upper flask and the lower flask, and the limit bars are connected with each other. The first fixing ear and the second fixing ear are connected through insertion. Through the cooperation of the fixing ear and the limit rod, the upper and lower flasks can be closed, so as to improve the accuracy of the closure and make the casting inside the flask. The grooves are connected as far as possible to improve the quality of the cylindrical casting blank, and at the same time, the limit rod can be locked by the nut, which is convenient for the turning of the sand box.

Description

A sand box for casting cylindrical castings

technical field

The utility model relates to the technical field of casting sand boxes, in particular to a sand box for casting cylindrical castings.

Background technique

Sand casting refers to the casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. The main steps include: Painting, moulding, core making, molding, melting and pouring, cleaning, etc., the molds used in them are usually called sand boxes. Usually, when producing cylindrical castings, in order to make the molten iron fill the cavity smoothly during the pouring process, the filling method of vertical pouring is adopted, that is, the axis of cylindrical castings is perpendicular to the horizontal direction. At this stage, the upper and lower sand boxes are combined. Before the box, most of the closing marks are made manually. After the mold is lifted, the upper and lower sand boxes are combined and checked through the marking line, so that the pouring opening in the upper sand box corresponds to the mold groove of the lower sand box. It needs to be checked by naked eyes, the accuracy is poor, and it is more difficult for cylindrical castings; therefore, it does not meet the existing needs, and we have proposed a sand box for cylindrical castings.

Utility model content

The utility model provides a sand box for casting cylindrical castings, which has beneficial effects, and solves the problem mentioned in the above background technology that before the upper and lower sand boxes are combined at the present stage, most of the closing marks are manually made, and after the mold is taken , combine the upper and lower sand boxes, and check through the marking line, so that the pouring opening in the upper sand box corresponds to the mold groove of the lower sand box. This combination needs to be checked by the naked eye, and it is more difficult for cylindrical castings question.

The utility model provides the following technical scheme: a sand box for casting cylindrical castings, including a sand box body, the sand box body includes an upper sand box and a lower sand box, and the upper sand box and the lower sand box are set to have the same specifications cylinder, the upper sand box and the lower sand box are connected up and down correspondingly, first fixing ears are installed on both sides of the upper sand box, and second fixing ears are installed on both sides of the lower sand box. Both the first fixed ear and the second fixed ear are set as fixed blocks with through holes, and the side parts of the upper sand box and the lower sand box are provided with limit rods, and the limit rods are connected with the first fixed The ear and the second fixed ear are inserted and connected.

As an optional scheme of a sandbox for cylindrical casting casting described in the present invention, wherein: the bottom of the second fixing ear is welded with a limiting slot, and the bottom of the limiting rod is inserted into the limiting slot. The top end of the limit rod is provided with a threaded end.

As an optional scheme of a sand box for cylindrical casting casting according to the utility model, wherein: the side of the upper sand box is welded with a bump, and the side of the lower sand box is welded with a matching groove, and the side of the raised sand box is welded with a bump. The block is buckled and plugged into the corresponding groove.

As an optional solution for a cylindrical casting casting flask according to the present invention, wherein: the protrusion is connected with the corresponding groove and the limiting rod through interpenetration.

As an optional scheme of a sand box for cylindrical casting casting according to the utility model, wherein: the side walls of the upper sand box and the lower sand box begin to have a number of sand overflow holes, and several sand overflow holes are set For circular through holes.

As an optional scheme of a cylindrical casting sand box according to the utility model, wherein: the upper sand box and the lower sand box have interlayer slots in the middle of the side walls, and the upper sand box and the lower sand box have interlayer slots. A movable sleeve is installed on the lower sand box, and the movable sleeve is provided with a smooth and complete sleeve, and the movable sleeve is inserted and slidably installed in the interlayer slot.

As an optional solution of a sandbox for casting cylindrical castings according to the utility model, wherein: both sides of the movable sleeve are attached to the sand overflow holes.

As an optional scheme of a sand box for cylindrical casting casting according to the utility model, a handle is welded on the top of the movable sleeve.

The utility model has the following beneficial effects:

1. The sand box used for casting cylindrical castings is easy to move the upper and lower sand boxes by installing fixed ears on both sides of the upper sand box and the lower sand box. Through the cooperation of the fixed ears and the limit rod, the upper and lower sand boxes can be combined. Positioning, so as to improve the accuracy of the closing box, make the casting groove inside the sand box dock as much as possible, improve the quality of the cylindrical casting blank, and at the same time, the bottom of the limit rod is inserted into the limit slot, and the top of the limit rod has a threaded end. The limit rod can be locked by the nut, which is convenient for the sand box to turn over.

2. The sand box used for casting cylindrical castings can further limit the position of the upper and lower sand boxes through the cooperation of the protrusions and the matching grooves, making it difficult to move, thereby reducing errors and improving precision. The block and the corresponding groove are also interspersed with the limit rod, which strengthens the positioning function of the limit rod.

3. The sand box used for casting cylindrical castings, through the cooperation of the sand overflow hole and the movable sleeve, when the movable sleeve is inserted in the sand box, the sand overflow hole is blocked, which is convenient for the molding sand to be compacted, and the movable sleeve is pulled out. The sand overflow hole is unblocked, which is convenient for sand falling out of the sand box, and the dross and sand will overflow in advance after pouring.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a schematic diagram of the three-dimensional explosion structure of the present invention.

Fig. 3 is a schematic diagram of the front view of the utility model.

Fig. 4 is a schematic cross-sectional structure diagram of the utility model.

Fig. 5 is a schematic diagram of the enlarged structure at A of the present invention.

Among the figure: 110, upper sand box; 111, first fixed ear; 120, lower sand box; 121, second fixed ear; 130, limit rod; 131, threaded end; 140, limit slot; 150, overflow Sand hole; 160, movable sleeve; 170, handle; 180, matching groove; 190, bump.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1

This embodiment is intended to promote the solution to the current stage before the upper and lower sand boxes are combined. Most of the closing marks are manually made. The mouth corresponds to the mold groove of the lower flask 120. This combination needs to be checked with the naked eye, and it is more difficult for cylindrical castings. Please refer to Figures 1-2, a sandbox for cylindrical castings, including The sand box body, the sand box body includes an upper sand box 110 and a lower sand box 120, the upper sand box 110 and the lower sand box 120 are set as cylinders with the same specification, and the upper sand box 110 and the lower sand box 120 are both set to be steel sand boxes. box, see Figure 1, the upper sand box 110 and the lower sand box 120 are connected up and down correspondingly, the two sides of the upper sand box 110 are welded with the first fixing ears 111, and the lower sand box 120 sides are equipped with the second fixing ears 121, the second One fixed ear 111 and the second fixed ear 121 are all set as fixed blocks with through holes, and the side portions of the upper sand box 110 and the lower sand box 120 are provided with limit rods 130, and the limit rods 130 are set as stainless steel round rods for limiting The sand box moves, and the stop bar 130 is interspersed with the first fixed ear 111 and the second fixed ear 121, so that the corresponding positions and angles of the upper sand box 110 and the lower sand box 110 before and after taking the mold are basically the same.

As shown in Figure 2, the bottom of the second fixing ear 121 is welded with a limit slot 140, the bottom of the limit rod 130 is plugged into the limit slot 140, and the top of the limit rod 130 is provided with a threaded end 131, which can be threaded Connect the nut so that the limit rod 130 is locked, and the upper sand box 110 and the lower sand box 120 cannot be separated, which is convenient for turning over the box.

In this embodiment: by installing fixed ears on both sides of the upper sand box 110 and the lower sand box 120, it is convenient to move the upper and lower sand boxes, and through the cooperation of the fixed ears and the limit rod 130, the upper and lower sand boxes can be positioned together, so that Improve the accuracy of the box closing, make the casting grooves inside the sand box dock as much as possible, improve the quality of the cylindrical casting blank, and at the same time, the bottom of the limit rod 130 is inserted into the limit slot 140, and the top of the limit rod 130 has a threaded end 131 , the limit rod 130 can be locked by the nut, which is convenient for the sand box to turn over.

Example 2

This embodiment is intended to promote the solution to the current stage before the upper and lower sand boxes are combined. Most of the closing marks are made manually. Corresponding to the mold groove of the lower flask, this kind of boxing needs to be checked by naked eyes, and it is more difficult for cylindrical castings. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to 3-5 , the side of the upper sand box 110 is welded with a protrusion 190 , and the side of the lower sand box 120 is welded with a coupling groove 180 , and the protrusion 190 is snapped and inserted into the coupling groove 180 . The protrusion 190 is interspersed with the connecting groove 180 and the limit rod 130. The protrusion 190 and the connecting groove 180 are both rectangular buckle blocks, which are different from the limit rod 130 for object restriction, so the upper sand box 110 can be further improved. And the lower sand box 120 combined box accuracy.

In this embodiment: through the cooperation of the bump 190 and the matching groove 180, the position of the upper and lower sand boxes can be further limited to make it difficult to move, thereby reducing the error and improving the accuracy. The groove 180 also intersects with the limiting rod 130 , which strengthens the positioning function of the limiting rod 130 .

Example 3

This embodiment aims to solve the problem that the high temperature of molten iron will affect the generation of dross inside the molding sand during pouring, and the sand in the sand box will overflow due to thermal expansion and contraction. This embodiment is based on the second embodiment. Specifically, please refer to Fig. 2-Fig. 4, the side walls of the upper sand box 110 and the lower sand box 120 begin to have some sand overflow holes 150, and some sand overflow holes 150 are set as circular through holes, and the sand can penetrate Over the overflow sand hole 150, there are interlayer slots in the middle of the side walls of the upper sand box 110 and the lower sand box 120, and the upper sand box 110 and the lower sand box 120 are equipped with movable sleeves 160, which are provided with smooth and complete sleeves. The movable sleeve 160 is inserted and slidably installed in the interlayer slot, and the two sides of the movable sleeve 160 fit the sand overflow hole 150, which can block the sand overflow hole 150, which is convenient for compacting the sand during modeling. The top of the movable sleeve 160 Welded with a handle 170, the movable sleeve 160 can be lifted upwards and pulled away for pulling out the movable sleeve 160 after pouring, so as to facilitate sand spilling and falling sand.

In this embodiment: when the movable sleeve 160 is inserted in the sand box, the sand overflow hole 150 is blocked, which is convenient for the molding sand to be compacted, and the movable sleeve 160 is pulled away, and the sand overflow hole 150 is unblocked, which is convenient for sand falling out of the sand box. The slag and sand can overflow in advance, reducing the pressure on the side wall of the sand box and improving the service life of the sand box.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. And retouching should also be regarded as the protection scope of the present utility model.

Claims (8)

1. A kind of sand box for cylindrical casting casting, comprises sand box body, and sand box body comprises upper sand box (110) and lower sand box (120), it is characterized in that: described upper sand box (110) and described The lower sand box (120) is set as a cylinder with the same specifications, the upper sand box (110) and the lower sand box (120) are connected up and down correspondingly, and first Fixed ears (111), second fixed ears (121) are installed on both sides of the lower sand box (120), and the first fixed ears (111) and the second fixed ears (121) are all set to have through The fixing block of the hole, the side of the upper sand box (110) and the lower sand box (120) is provided with a limit rod (130), and the limit rod (130) is connected with the first fixed ear (111) and the second fixing ear (121) is inserted and connected. 2. The flask for casting cylindrical castings according to claim 1, characterized in that: the bottom of the second fixing ear (121) is welded with a limiting slot (140), and the limiting rod (130) The bottom of the stop rod (130) is plugged and fitted with the limit slot (140), and the top end of the limit rod (130) is provided with a threaded end (131). 3. A flask for cylindrical casting casting according to claim 1, characterized in that: the side of the upper flask (110) is welded with bumps (190), and the side of the lower flask (120) is A matching groove (180) is welded on the upper part, and the protrusion (190) is buckled and plugged into the matching groove (180). 4. A flask for casting cylindrical castings according to claim 3, characterized in that: said bump (190) is connected with said corresponding groove (180) and said limit rod (130) . 5. A kind of sand box for cylindrical casting casting according to claim 1, characterized in that: the side walls of the upper sand box (110) and the lower sand box (120) begin to have some sand overflow holes ( 150), several of the sand overflow holes (150) are set as circular through holes. 6. The sand box for cylindrical casting casting according to claim 5, characterized in that: there are interlayer slots in the middle of the side walls of the upper sand box (110) and the lower sand box (120), and the The upper sand box (110) and the lower sand box (120) are equipped with movable sleeves (160), and the movable sleeves (160) are provided with smooth and complete sleeves, and the movable sleeves (160) are inserted into Slip-fit into the mezzanine slot. 7. The flask for casting cylindrical castings according to claim 6, characterized in that: both sides of the movable sleeve (160) are attached to the sand overflow hole (150). 8. A flask for casting cylindrical castings according to claim 7, characterized in that: a handle (170) is welded to the top of the movable sleeve (160).

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