CN218475970U

CN218475970U - Sand casting mould

Info

Publication number: CN218475970U
Application number: CN202222328527.XU
Authority: CN
Inventors: 赵伟龙; 王惠兵; 张建中; 赵益锋; 柯洪国
Original assignee: Ningbo Rixing Foundry Co ltd
Current assignee: Ningbo Rixing Foundry Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-02-14
Anticipated expiration: 2032-08-31

Abstract

The utility model provides a sand casting mold, which comprises a mold main body, wherein the mold main body is formed by encircling at least three mold plates and a bottom plate, and a web plate is embedded on each mold plate; the advantage is that the web of inlaying on every mould board becomes a set of loose piece group by a loose piece, and the volume of the whole web is compared with the quality and the volume of quality in every set of loose piece group and has been littleer, is in the in-process with loose piece and sand mould separation, uses less power can be with loose piece and sand mould separation, and is more convenient.

Description

Sand casting mould

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to a sand casting mould.

Background

The movable block is a part of the mould, but is separated from the main mould during moulding and is connected with the main mould in the modes of pins, dovetails and the like, and the movable block is mainly used for sharing a boss with parts not on a parting surface and blocks which can borrow mutually. When wind power castings are processed, movable blocks are embedded in a die to assist in casting and forming, but the sizes of the wind power castings are large, the mass and the size of the movable blocks matched with the wind power castings are large, after sand casting is completed, the movable blocks with large volumes and large masses can easily damage a sand mold in the demolding process of the movable blocks and the sand mold, and the movable blocks and the sand mold are difficult to separate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a casting mould of convenient loose piece and sand mould separation.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a sand casting mould, includes the mould main part, the mould main part is enclosed by three piece at least mould boards and a bottom plate, every it is equipped with the web all to inlay on the mould board, every the web forms by a set of loose piece block splice, every group loose piece group is arranged in proper order and is inlayed on corresponding mould board.

In the sand casting mold, the movable block group comprises a first movable block and at least two second movable blocks, an outer mold base is integrally arranged on the mold plate, a first cavity is arranged in the outer mold base, the first movable block is arranged right above the outer mold base and is abutted against the outer mold base, a second cavity is arranged at one end, close to the outer mold base, of the first movable block, the first cavity and the second cavity are communicated to form a cavity for casting the first core head, and the second movable blocks are distributed on two sides of the first movable block.

In the sand casting mold, the two sides of the outer mold base are provided with positioning steps, the two second movable blocks abutted against the first movable blocks are provided with first positioning grooves, and when the movable blocks are embedded on the mold plate, the positioning steps are matched with the first positioning grooves.

In the sand casting mold, each movable block in each movable block group is provided with a material pushing assembly.

In foretell sand mold casting mould, it includes the mounting groove that sets up on the loose piece to push away the material subassembly, be provided with the push pedal in the mounting groove, work as the push pedal inlays when in the mounting groove, the plane of push pedal is parallel and level mutually with the plane of loose piece, be provided with the reverse drive unit between push pedal and the loose piece.

In foretell sand mold casting mould, the reverse drive unit includes fixed plate and drive screw, is provided with the fixed slot in the loose piece, the fixed plate is fixed in the fixed slot, the mounting groove with the fixed slot is linked together just the mounting groove sets up the fixed slot is towards the one end of loam core, the push pedal still is provided with the stopper towards one side of fixed plate, be provided with the cavity in the stopper, portable drive block that is provided with in the cavity, drive screw passes the fixed plate with the fixed plate looks spiro union, and drive screw's the one end towards the push pedal passes the stopper with the drive block is fixed mutually.

In the sand casting mold, the joint of two adjacent mold plates is provided with a limiting plate, and two sides of the limiting plate are respectively abutted against the movable blocks in the adjacent movable block groups.

In the sand casting mold, a groove for forming the second core print is formed in the bottom plate, a step hole is formed in the upper edge of the groove, a plurality of mounting blocks are embedded in the step hole, two adjacent mounting blocks are mutually abutted, and the plurality of mounting blocks enclose a hollow ring shape.

In the sand casting mold, a positioning block is arranged on one side, away from the center of the bottom plate, of each mounting block, a second positioning groove is formed in the bottom plate, and the positioning block is embedded in the second positioning groove to prevent the mounting blocks from moving.

In the sand casting mold, some loose blocks in the loose block group are provided with positioning rings for forming motor holes, and the positioning rings are sleeved with bushings.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model provides a sand casting mould, including the mould main part, the mould main part is used for casting the sand mould by at least three mould boards and a bottom plate enclose into an upper end open-ended cavity, and inlay the web of establishing on every mould board and become a set of loose piece group by a loose piece, the volume of the whole web of volume and quality comparison of single loose piece in every group loose piece group has been little a lot with small, at the in-process with loose piece and sand mould separation, use power still less can be with loose piece and sand mould separation, it is more convenient.

(2) Positioning steps are arranged on two sides of the outer mold base, first positioning grooves are formed in the two second movable blocks abutted against the first movable blocks, when the movable blocks are embedded on the mold plate, the positioning steps are matched with the first positioning grooves, the positioning steps arranged on the outer mold base are matched with the first positioning grooves in the second movable blocks, installation and positioning are provided when the second movable blocks are installed on the mold plate, and the first movable blocks and the second movable blocks are convenient to assemble on the mold;

(3) The positioning step can also provide certain support for the second loose piece, so that the bottom stress of the second loose piece is reduced, and the service life of the second loose piece is prolonged.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic perspective view of a middle pushing and lifting assembly according to the present invention;

FIG. 4 is a schematic view of the assembly of the lift assembly with the first loose piece;

fig. 5 is a schematic perspective view of the middle web plate of the present invention.

In the figure, a mold body 100; a mold plate 101; a base plate 102; a first loose piece 103; a second loose piece 104; an outer mold base 105; a first cavity 106; a second cavity 107; a positioning step 108; a first positioning groove 109; a mounting groove 200; a push plate 201; a fixing plate 202; a drive screw 203; a fixing groove 204; a stop block 205; a drive block 206; a limiting plate 300; a mounting block 401; a positioning block 402; a second positioning groove 403; a positioning ring 500 and a bushing 501.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1 and 2, the sand casting mold comprises a mold body 100, wherein the mold body 100 is formed by at least three mold plates 101 and a bottom plate 102 in a surrounding manner, a web is embedded in each mold plate 101, each web is formed by splicing a group of loose pieces, and each group of loose pieces are sequentially arranged and embedded in the corresponding mold plate 101.

A sand casting mould comprises a mould main body 100, wherein the mould main body 100 is formed by at least three mould plates 101 and a bottom plate 102 in a surrounding mode to form a cavity with an open upper end for casting a sand mould, a web embedded on each mould plate 101 is changed into a group of movable block groups from a movable block, the mass and the volume of the whole web are much smaller than those of a single movable block in each group of movable block groups, and the movable block can be separated from the sand mould by using less force in the process of separating the movable block from the sand mould, so that the sand casting mould is more convenient.

Preferably, the group of movable blocks comprises a first movable block 103 and at least two second movable blocks 104, an outer mold base 105 is integrally arranged on the mold plate 101, a first cavity 106 is arranged in the outer mold base 105, the first movable block 103 is arranged right above the outer mold base 105 and is abutted against the outer mold base 105, a second cavity 107 is arranged at one end, close to the outer mold base 105, of the first movable block 103, the first cavity 106 is communicated with the second cavity 107 to form a cavity for casting the first core, and the plurality of second movable blocks 104 are distributed on two sides of the first movable block 103.

In this embodiment, the movable block group arranged on each mold plate 101 includes a first movable block 103 and at least two second movable blocks 104, an outer mold base 105 is integrally arranged on the mold plate 101, a first cavity 106 is arranged in the outer mold base 105, the first movable block 103 is arranged right above the outer mold base 105 and abuts against the outer mold base 105 to provide a certain support for the first movable block 103, a second cavity 107 is arranged at one end of the first movable block 103 close to the outer mold base 105, the first cavity 106 and the second cavity 107 are communicated to form a cavity for casting a first core, after sand casting is completed, the core is lifted to drive the movable block group covered on the sand mold to lift, since the cavity for casting the first core is formed by the first cavity 106 of the outer mold base 105 and the second cavity 107 on the first movable block 103, when the core is lifted, the first core is moved out from the second cavity 107, the first movable block 103 covers the first core, and then the first movable block 103 is removed to perform demolding.

Specifically, because of the dimensional requirements of the first core print, the thickness of first loose piece 103 is greater than the thickness of second loose piece 104.

Further preferably, the two sides of the outer mold base 105 are provided with positioning steps 108, the two second movable blocks 104 abutting against the first movable block 103 are provided with first positioning grooves 109, and when the movable blocks are embedded on the mold plate 101, the positioning steps 108 are engaged with the first positioning grooves 109.

In this embodiment, the second movable blocks 104 are distributed on two sides of the first movable block 103, two sides of the outer mold base 105 are provided with positioning steps 108, the two second movable blocks 104 abutting against the first movable block 103 are both provided with first positioning grooves 109, when the movable blocks are embedded on the mold plate 101, the positioning steps 108 are matched with the first positioning grooves 109, the positioning steps 108 arranged on the outer mold base 105 are matched with the first positioning grooves 109 arranged on the second movable blocks 104, so that the second movable blocks 104 are installed and positioned on the mold plate 101, the first movable blocks 103 and the second movable blocks 104 are conveniently assembled on the mold plate 101, meanwhile, the positioning steps 108 are arranged to provide certain support for the second movable blocks 104, the bottom stress of the second movable blocks 104 is reduced, and the service life of the second movable blocks 104 is prolonged.

Preferably, the movable blocks in each group of movable blocks are provided with material pushing assemblies.

Further preferably, the pushing assembly comprises a mounting groove 200 arranged on the loose piece, a pushing plate 201 is arranged in the mounting groove 200, when the pushing plate 201 is embedded in the mounting groove 200, the plane of the pushing plate 201 is flush with the plane of the loose piece, and a reverse driving unit is arranged between the pushing plate 201 and the loose piece.

In this implementation, all be provided with on the loose piece in every group loose piece group and push away the material subassembly, after the sand mould casting is accomplished, hang up the loam core and drive the loose piece and cover and shift out on the sand mould, the loose piece in the loose piece group still covers on the sand mould this moment, and through be provided with push pedal 201 in the loose piece, and be provided with the reverse drive unit between push pedal 201 and the loose piece, the reverse drive unit can drive push pedal 201 and want to move towards the direction of loam core, and because push pedal 201 can not move forward with the sand mould counterbalance, so push pedal 201 drives the loose piece and moves towards the direction of keeping away from the sand mould, when push pedal 201 wants to move towards the direction of sand mould, the loose piece moves towards the direction of keeping away from the sand mould, operating personnel can accomplish the separation between loose piece and the sand mould more laborsavingly.

Further preferably, the reverse driving unit comprises a fixing plate 202 and a driving screw 203, a fixing groove 204 is arranged in the loose piece, the fixing plate 202 is fixed in the fixing groove 204, the mounting groove 200 is communicated with the fixing groove 204, the mounting groove 200 is arranged at one end of the fixing groove 204 facing the loam core, a limiting block 205 is further arranged at one side of the push plate 201 facing the fixing plate 202, a cavity is arranged in the limiting block 205, a driving block 206 is movably arranged in the cavity, the driving screw 203 penetrates through the fixing plate 202 to be screwed with the fixing plate 202, and one end of the driving screw 203 facing the push plate 201 penetrates through the limiting block 205 to be fixed with the driving block 206.

In this embodiment, a fixing groove 204 is provided in the loose piece, the fixing plate 202 is fixed in the fixing groove 204, the mounting groove 200 is communicated with the fixing groove 204, the mounting groove 200 is provided at one end of the fixing groove 204 facing the core, a limit block 205 is further provided at one side of the push plate 201 facing the fixing plate 202, a cavity is provided in the limit block 205, a driving block 206 is movably provided in the cavity, the driving screw 203 penetrates through the fixing plate 202 and is screwed with the fixing plate 202, and one end of the driving screw 203 facing the push plate 201 penetrates through the limit block 205 and is fixed with the driving block 206, by providing the driving block 206, the rotary motion of the driving screw 203 can be converted into a linear motion which is intended to drive the push plate 201 to advance, because the driving screw 203 is screwed with the fixing plate 202, the push plate 201 is abutted against the sand mold, the push plate 201 cannot advance any more, when the driving screw 203 rotates to drive the push plate 201 to advance, the fixing plate 202 drives the loose piece to move in a direction away from the sand mold along with the rotation of the driving screw 203, thereby realizing the separation of the loose piece and the sand mold; and the driving screw rod 203 is arranged to drive the loose piece to be demoulded with the sand mould, so that the separating force applied to the loose piece is vertical to the surface of the loose piece in the separating process of the loose piece, and galling or meat shortage is prevented.

Preferably, the joint of two adjacent mold plates 101 is provided with a limiting plate 300, and two sides of the limiting plate 300 respectively abut against the loose pieces in the adjacent loose piece groups.

In this embodiment, the limiting plates 300 are disposed at the joints of two adjacent mold plates 101, and the two loose pieces sandwich the limiting plates 300, so that the dimensional accuracy between the loose pieces can be reduced.

Preferably, the bottom plate 102 is provided with a groove for forming the second core print, a stepped hole is formed at the upper edge of the groove, a plurality of mounting blocks 401 are embedded in the stepped hole, two adjacent mounting blocks 401 abut against each other, and the mounting blocks 401 enclose a hollow ring shape.

In this embodiment, a plurality of installation blocks 401 are arranged to enclose a hollow ring, so after sand casting is completed, each installation block 401 is moved out towards a direction away from a sand mold, and compared with a whole ring-shaped demolding, demolding of the installation blocks 401 is more convenient.

Further preferably, a positioning block 402 is disposed on a side of each mounting block 401 away from the center of the bottom plate 102, a second positioning groove 403 is disposed on the bottom plate 102, and the positioning block 402 is embedded in the second positioning groove 403 to prevent the mounting block 401 from moving.

In this embodiment, one side of each installation block 401, which is far away from the center of the bottom plate 102, is provided with a positioning block 402, the bottom plate 102 is provided with a second positioning groove 403, and the positioning block 402 is embedded in the second positioning groove 403, so that the installation block 401 is prevented from moving in the sand casting process, and the casting effect is prevented from being influenced.

It is further preferred that some of the loose pieces in the loose piece group are provided with positioning rings 500 for forming motor holes, and the positioning rings 500 are sleeved with bushings 501.

In this embodiment, some loose pieces in the loose piece group are provided with positioning rings 500 for forming motor holes, the positioning rings 500 are internally sleeved with bushings 501, after sand casting is completed, the loose piece group is lifted along with a sand mold, the loose pieces in the loose piece group are moved out by an operator later, at this time, the bushings 501 are still sleeved on the sand mold, and then the bushings 501 are moved away.

It is noted that the description herein of "first," "second," "a," etc. is for descriptive purposes only and is not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise. The terms "connected", "fixed", and the like are to be construed broadly, and for example, "fixed" may be a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory to each other or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a sand casting mould, includes the mould main part, the mould main part is enclosed by three piece at least mould boards and a bottom plate, every all inlay on the mould board and be equipped with the web, its characterized in that, every the web forms by a set of loose piece group concatenation, every group loose piece group is arranged in proper order and is inlayed on corresponding mould board.

2. A sand casting mold according to claim 1, wherein the set of loose pieces comprises a first loose piece and at least two second loose pieces, an outer mold base is integrally arranged on the mold plate, a first cavity is arranged in the outer mold base, the first loose piece is arranged right above the outer mold base and abuts against the outer mold base, a second cavity is arranged at one end, close to the outer mold base, of the first loose piece, the first cavity is communicated with the second cavity to form a cavity for casting the first core, and the second loose pieces are distributed on two sides of the first loose piece.

3. A sand casting mold according to claim 2, wherein positioning steps are arranged on two sides of the outer mold base, first positioning grooves are arranged on two second movable blocks which are abutted against the first movable blocks, and when the movable blocks are embedded on the mold plate, the positioning steps are matched with the first positioning grooves.

4. A sand casting mold according to claim 1, wherein a material pushing assembly is arranged on the loose blocks in each group of loose blocks.

5. The sand casting mold according to claim 4, wherein the pushing assembly comprises a mounting groove disposed on the loose piece, a pushing plate is disposed in the mounting groove, when the pushing plate is embedded in the mounting groove, a plane of the pushing plate is flush with a plane of the loose piece, and a reverse driving unit is disposed between the pushing plate and the loose piece.

6. The sand casting mold according to claim 5, wherein the reverse driving unit comprises a fixed plate and a driving screw, a fixed groove is formed in the loose piece, the fixed plate is fixed in the fixed groove, the mounting groove is communicated with the fixed groove and is formed in one end, facing the loam core, of the fixed groove, a limiting block is further arranged on one side, facing the fixed plate, of the push plate, a cavity is formed in the limiting block, a driving block is movably arranged in the cavity, the driving screw penetrates through the fixed plate and is in threaded connection with the fixed plate, and one end, facing the push plate, of the driving screw penetrates through the limiting block and is fixed with the driving block.

7. The sand casting mold according to claim 1, wherein a limiting plate is arranged at the joint of two adjacent mold plates, and two sides of each limiting plate are respectively abutted against the loose blocks in the adjacent loose block groups.

8. A sand casting mold according to claim 1, wherein a groove for forming the second core print is formed in the bottom plate, a stepped hole is formed in the upper edge of the groove, a plurality of mounting blocks are embedded in the stepped hole, two adjacent mounting blocks are abutted against each other, and the plurality of mounting blocks enclose a hollow ring shape.

9. A sand casting mould according to claim 8, wherein each mounting block is provided with a locating block on the side away from the centre of the base plate, the base plate is provided with a second locating slot, and the locating block is embedded in the second locating slot to prevent the mounting block from moving.

10. A sand casting mold according to claim 1, wherein some of the loose pieces in the loose piece group are provided with locating rings for forming motor holes, and the locating rings are sleeved with bushings.