CN220698185U

CN220698185U - Sand core positioning chaplet

Info

Publication number: CN220698185U
Application number: CN202322363521.0U
Authority: CN
Inventors: 黄伟; 王学武; 马兴达; 任茗宇
Original assignee: Hebei Jitou Machinery Equipment Co ltd
Current assignee: Hebei Jitou Machinery Equipment Co ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-04-02
Anticipated expiration: 2033-08-31

Abstract

The utility model provides a sand core positioning chaplet, which belongs to the technical field of sand casting and comprises a support column, wherein end support plates are respectively arranged at two ends of the support column, a plurality of fin plates are arranged at equal intervals on the periphery of the support column, the fin plates are distributed along the axial direction of the support column, the two ends of the fin plates are respectively connected with the two end support plates, a plurality of fusion grooves are formed in the outer side edges of the fin plates at intervals from top to bottom, a plurality of first fusion holes are formed in the end support plates, and the first fusion holes are communicated with fusion gaps formed between adjacent fin plates in a one-to-one correspondence manner. According to the sand core positioning chaplet provided by the utility model, when the sand core is supported, the two end supporting plates are respectively supported on the sand core, after molten iron is poured into the cavity, the molten iron enters the fusion gap, the fusion groove and the first fusion hole of the positioning chaplet, and the molten iron is in full contact with the positions, so that the positioning chaplet is completely wrapped by the molten iron to form penetration fusion, the generation of shrinkage gaps is reduced, the subsequent repair work is avoided, and the product quality of a casting is improved.

Description

Sand core positioning chaplet

Technical Field

The utility model belongs to the technical field of sand casting, and particularly relates to a sand core positioning chaplet.

Background

The casting mould used for sand casting is generally formed by combining an outer sand mould and a sand core, and the casting mould is filled with molten iron under the gravity to produce castings.

When casting molten iron, the molten iron can generate certain buoyancy to the sand core assembled in the sand box, so that the position of the sand core is changed, and the shape of the cavity of the whole casting structure can be changed when the position of the sand core is changed, so that a qualified product cannot be obtained. Positioning chaplets are therefore typically employed to secure the individual sand cores so that a fixed distance is maintained between the sand cores.

The existing positioning chaplet generally adopts a metal rod which is the same as the material of the casting body to process, two supporting surfaces are formed at the two ends of the positioning chaplet, the positioning chaplet can be coated in the casting body along with solidification of molten iron, but because the positioning chaplet is far lower than the temperature of the molten iron, the molten iron can easily form a shrinkage gap at the joint of the positioning chaplet and the molten iron when being solidified, and the later repair is usually required, so that the workload is increased, the product quality of the casting is also influenced, and even the casting body is scrapped when serious.

Disclosure of Invention

The utility model aims to provide a sand core positioning chaplet, which aims to solve the problems that shrinkage gaps are easy to form at the joint of the positioning chaplet and molten iron, later repair is usually needed, the workload is increased, the product quality of a casting is affected, and even the casting body is scrapped in serious cases.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sand core location chaplet, including the support column, the both ends of support column are equipped with the tip backup pad respectively, the periphery equidistant a plurality of wing boards that are provided with of support column, the wing board is followed the axial of support column is laid and both ends connect two respectively the tip backup pad, the outside limit top-down interval of wing board is equipped with a plurality of fusion grooves, a plurality of first fusion holes have been seted up in the tip backup pad, first fusion hole and adjacent the fusion clearance one-to-one intercommunication that forms between the wing board.

In one possible implementation manner, a middle fusion plate is arranged in the middle of the support column, a plurality of second fusion holes are formed in the middle fusion plate, and the first fusion holes and the second fusion holes are arranged in one-to-one correspondence.

In one possible implementation, the first fusion holes and the second fusion holes are both sector-shaped holes.

In one possible implementation, the upper end face and the lower end face of the middle fusion plate are both tapered faces, and the end faces of the two end support plates facing the middle fusion plate are also tapered faces.

In one possible implementation, the same fin plate is located in a region between the end support plates and the middle fusion plate, and at least two fusion grooves are provided.

In one possible implementation, the depth of the fusion slot is greater than half the width of the fin plate.

In one possible implementation, the fusion groove is any one of a rectangular groove, a trapezoid groove or a V-groove.

In one possible implementation, a distance between an outer peripheral surface of the end support plate and an outer peripheral surface of the support column is greater than a width of the fin plate.

In one possible implementation, the radius of the end support plate is greater than three times the radius of the support post.

The sand core positioning chaplet provided by the utility model has the beneficial effects that: compared with the prior art, the both ends of support column are equipped with the tip backup pad respectively, and the periphery of support column is provided with a plurality of wing boards, forms between the adjacent wing board and fuses the clearance, and the tip backup pad of two upper and lower sides is gone up respectively at the both ends of wing board, has seted up a plurality of first fusion holes in two tip backup pads, and first fusion hole corresponds the intercommunication with the clearance that fuses, and the outside limit top-down of wing board is provided with a plurality of fusion grooves. According to the sand core positioning chaplet provided by the utility model, when the sand core is supported, the two end supporting plates are respectively supported on the sand core, after molten iron is poured into the cavity, the molten iron enters the fusion gap, the fusion groove and the first fusion hole of the positioning chaplet, and the molten iron is in full contact with the positions, so that the positioning chaplet is completely wrapped by the molten iron to form penetration fusion, the generation of shrinkage gaps is reduced, the subsequent repair work is avoided, and the product quality of a casting is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a sand core positioning chaplet provided by an embodiment of the present utility model;

FIG. 2 is a top view of a sand core positioning chaplet provided in an embodiment of the present utility model;

fig. 3 is a front view of a sand core positioning chaplet according to another embodiment of the present utility model.

Reference numerals illustrate:

1. a support column; 2. an end support plate; 3. a fin plate; 4. a fusion tank; 5. a first fusion hole; 6. a middle fusion plate; 7. and a second fusion hole.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 and 2, a sand core positioning chaplet provided by the present utility model will now be described. The sand core positioning chaplet comprises a support column 1, wherein end support plates 2 are respectively arranged at two ends of the support column 1, a plurality of fin plates 3 are arranged at equal intervals on the periphery of the support column 1, the fin plates 3 are arranged along the axial direction of the support column 1, two end support plates 2 are respectively connected at two ends, a plurality of fusion grooves 4 are formed in the outer side edges of the fin plates 3 at intervals from top to bottom, a plurality of first fusion holes 5 are formed in the end support plates 2, and the first fusion holes 5 are communicated with fusion gaps formed between adjacent fin plates 3 in a one-to-one correspondence mode.

Compared with the prior art, the sand core positioning core support provided by the utility model has the advantages that the two ends of the support column 1 are respectively provided with the end support plates 2, the periphery of the support column 1 is provided with the plurality of fin plates 3, fusion gaps are formed between the adjacent fin plates 3, the two ends of the fin plates 3 are respectively provided with the two upper and lower end support plates 2, the two end support plates 2 are provided with the plurality of first fusion holes 5, the first fusion holes 5 are correspondingly communicated with the fusion gaps, and the outer side edges of the fin plates 3 are provided with the plurality of fusion grooves 4 from top to bottom. According to the sand core positioning chaplet provided by the utility model, when the sand core is supported, the two end supporting plates 2 are respectively supported on the sand core, after molten iron is poured into the cavity, the molten iron enters the fusion gap, the fusion groove 4 and the first fusion hole 5 of the positioning chaplet, and the molten iron is in full contact with the positions, so that the positioning chaplet is completely wrapped by the molten iron to form a penetration fusion, the generation of shrinkage gaps is reduced, the subsequent repair work is avoided, and the product quality of castings is improved.

The support column 1, the two end support plates 2 and the fin plates 3 are all processed by adopting the same metal rod, and the same material composition as that of the casting is selected.

In another embodiment, referring to fig. 3, a middle fusion plate 6 is disposed in the middle of the support column 1, and a plurality of second fusion holes 7 are formed in the middle fusion plate 6, where the plurality of first fusion holes 5 and the plurality of second fusion holes 7 are disposed in one-to-one correspondence.

In this embodiment, the middle fusion plate 6 is integrally formed with the support column 1 and is parallel to the two end support plates 2, respectively. The middle fusing plate 6 is also provided with a plurality of second fusing holes 7, and the second fusing holes correspond to the first fusing holes 5 one by one. The molten iron can be contacted and solidified through the second fusion holes 7 and the middle fusion plate 6, so that more contact surfaces and a penetrating fusion structure are provided for the contact of the molten iron and the positioning chaplet, and the combination degree of the positioning chaplet and the molten iron is improved.

Preferably, the first fusion hole 5 and the second fusion hole 7 are all fan-shaped holes, the fan-shaped holes can be matched with the cross section structure of the fusion gap, so that molten iron passing through the first fusion hole 5, the second fusion hole 7 and the fusion gap is more smoothly solidified, internal stress is reduced, and severe shrinkage gaps on the periphery of the positioning chaplet caused by local holes due to unsmooth solidification are avoided.

Wherein, the up end and the lower terminal surface of middle part fusion board 6 are the toper face, and the terminal surface of two tip backup pads 2 towards middle part fusion board 6 also is the toper face. The right angle area is avoided between the end support plate 2 and the support column 1 and the joint between the middle fusion plate 6 and the support column 1, and the combination of molten iron and the positioning chaplet is finally affected.

In order to ensure the combination effect of the outer side edge of the fin plate 3 and the molten iron, the same fin plate 3 is positioned in the area between the end support plate 2 and the middle fusion plate 6, and is provided with at least two fusion grooves 4.

The depth of the fusion channel 4 is greater than half the width of the fin 3. Preferably, the depth of the fusion tank 4 is 2/3 of the width of the fin plate 3.

Optionally, the fusion groove 4 is any one of a rectangular groove, a trapezoid groove or a V-shaped groove, and turning tools with different types are selected for cutting and forming.

In addition, the distance between the outer peripheral surface of the end supporting plate 2 and the outer peripheral surface of the supporting column 1 is larger than the width of the fin plate 3, so that the outer side edge of the toothed plate can not protrude out of the outer peripheral surface of the end supporting plate 2, molten iron can wrap the fin plate 3 on the inner side of the outer peripheral surface of the end supporting plate 2, and the bonding strength is improved.

The radius of the end support plate 2 is more than three times of the radius of the support column 1, and the radius of the support column 1 is generally not less than 1/5 of the radius of the end support plate 2, so that the thickness of the support column 1 is reduced while the support column 1 is ensured to have enough strength, and the phenomenon that an 'inner chill' effect occurs in the support column 1 when molten iron solidifies at the periphery of the support column 1 is avoided, so that the shrinkage gap of the area is overlarge.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The sand core positioning chaplet is characterized by comprising a support column (1), wherein end support plates (2) are respectively arranged at two ends of the support column (1), a plurality of fin plates (3) are arranged at equal intervals on the periphery of the support column (1), the fin plates (3) are arranged along the axial direction of the support column (1) and two ends of the support column are respectively connected with two end support plates (2), a plurality of fusion grooves (4) are formed in the outer side of each fin plate (3) at intervals from top to bottom, a plurality of first fusion holes (5) are formed in each end support plate (2), and the first fusion holes (5) are communicated with adjacent fusion gaps formed between the fin plates (3) in a one-to-one correspondence mode.

2. The sand core positioning chaplet according to claim 1, characterized in that a middle part of the supporting column (1) is provided with a middle part fusion plate (6), a plurality of second fusion holes are formed in the middle part fusion plate (6), and a plurality of first fusion holes (5) and a plurality of second fusion holes are arranged in a one-to-one correspondence.

3. A sand core positioning core support according to claim 2, characterized in that the first and second fusion holes (5, 5) are sector holes.

4. A sand core positioning core support according to claim 2, characterized in that the upper and lower end faces of the middle fusion plate (6) are both tapered faces, and the end faces of the two end support plates (2) facing the middle fusion plate (6) are also tapered faces.

5. A sand core positioning core support according to claim 2, characterized in that the same fin plate (3) is provided with at least two fusion grooves (4) in the area between the end support plates (2) and the middle fusion plate (6).

6. A sand core positioning chaplet according to claim 1, characterized in that the depth of the fusion groove (4) is greater than half the width of the fin plate (3).

7. A sand core positioning chaplet according to claim 5 or 6, characterized in that the fusion groove (4) is any one of a rectangular groove, a trapezoidal groove or a V-groove.

8. A sand core positioning core support according to claim 1, characterized in that the distance between the outer circumferential surface of the end support plate (2) and the outer circumferential surface of the support column (1) is greater than the width of the fin plate (3).

9. A sand core positioning core support according to claim 1, characterized in that the radius of the end support plate (2) is greater than three times the radius of the support column (1).