CN214684223U

CN214684223U - Low-pressure die with anti-thrust device for preventing support deformation

Info

Publication number: CN214684223U
Application number: CN202120778380.7U
Authority: CN
Inventors: 沈茂刚; 陆国明
Original assignee: Wuxi Sinan Technology Co ltd
Current assignee: Wuxi Sinan Technology Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-11-12
Anticipated expiration: 2031-04-15

Abstract

The utility model relates to a low-pressure die with a support deformation prevention reverse pushing device, which comprises an upper die, a lower die and a bottom plate connected with the lower die, wherein a reverse pushing mechanism is arranged on the bottom plate, the structure of the reverse pushing mechanism comprises an elastic piece, a limiting piece connected with the elastic piece and a supporting piece connected with the limiting piece, a limiting cavity matched with the limiting piece and a through hole matched with the supporting piece are arranged in the lower die, and the supporting piece is correspondingly arranged with a part to be supported of a casting; when the upper die and the lower die are closed, the casting is molded in the main cavity, the structural bottom of the part to be supported is supported by the supporting piece, and the elastic piece is in a pressing state; when the die is opened, the supporting piece pushes out the part to be supported of the casting under the action of the elastic force of the elastic piece, so that the part to be supported of the casting is prevented from deforming under the tightening force of the lower die. The utility model discloses the tight power of package of lower mould when utilizing the balanced die sinking of reverse-thrust mechanism ensures foundry goods and last mould body laminating, makes whole foundry goods deviate from smoothly, and the problem of foundry goods thin wall part atress deformation when having solved the die sinking.

Description

Low-pressure die with anti-thrust device for preventing support deformation

Technical Field

The utility model belongs to the technical field of the low pressure mould technique and specifically relates to a low pressure mould of anti-thrust unit of support deformation is prevented in area.

Background

When the traditional low-pressure die is used for opening the die, a casting needs to be reserved in the upper die by means of the pulling force of the upper die cavity, but due to the action of the lower die packing force, the part of the structure of the casting, such as a support part of a compressor shell, is easy to deform downwards at the part under the action of the pulling force of the lower die due to the thin wall, so that the casting is scrapped due to unqualified size.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a low pressure mould of support deformation reverse thrust unit is prevented in area, the technical problem that thin wall part received lower mould pulling force deformation when solving the foundry goods die sinking.

The utility model adopts the technical scheme as follows:

a low-pressure die with a support deformation prevention reverse pushing device comprises an upper die, a lower die and a bottom plate connected with the lower die, wherein a reverse pushing mechanism is arranged on the bottom plate, the structure of the reverse pushing mechanism comprises an elastic piece, a limiting piece connected with the elastic piece and a supporting piece connected with the limiting piece, a limiting cavity matched with the limiting piece and a through hole matched with the supporting piece are formed in the lower die, and the supporting piece is arranged corresponding to a part to be supported of a casting; when the upper die and the lower die are closed, a casting is formed in a main cavity, the structural bottom of the part to be supported is supported by the supporting piece, and the elastic piece is in a pressing state; when the die is opened, the supporting piece pushes out the part to be supported of the casting under the action of the elastic force of the elastic piece, so that the part to be supported of the casting is prevented from deforming under the action of the lower die wrapping force.

The further technical scheme is as follows:

the elastic part adopts a compression spring, one end of the elastic part is connected with the bottom surface of the limiting part, and the other end of the elastic part is connected with the bottom plate.

The supporting piece is of a rod-shaped structure, a plurality of supporting rods are distributed along the top surface of the limiting piece, and each supporting rod comprises an ejector rod used for reversely pushing a casting and a supporting rod used for being abutted to the upper die.

The limiting cavity is located on the lower surface of the lower die, and after the lower die is fixedly connected with the bottom plate, the position of the limiting part is limited by the limiting cavity.

The orifices at the two ends of the through hole are respectively positioned on the bottom surface of the limiting cavity and the upper surface of the lower die, and after the lower die and the bottom plate are fixedly connected, the top end of the supporting piece extends out of the through hole.

The bottom of the upper die is provided with a pressing groove corresponding to the position of the supporting rod; after the upper die and the lower die are assembled, the top end of the supporting rod is in butt joint with the pressure groove, the elastic piece is compressed through the limiting piece, and meanwhile, the top end of the ejector rod is suspended.

The supporting rods are located at two ends of the top surface of the limiting part and are symmetrically arranged.

The bottom plate upper surface is equipped with the constant head tank, the one end of elastic component with the tank bottom of constant head tank is connected.

The locating slot with spacing chamber position corresponds, the lower mould with after bottom plate fixed connection, the locating slot with spacing chamber constitutes jointly holds the cavity of elastic component, the locating part can hold in the locating slot.

The utility model has the advantages as follows:

the utility model discloses set up the reverse thrust mechanism on the bottom plate, it is through locating part, support piece and lower mould cooperation, utilizes the thin wall part contact of support piece and foundry goods, through the elastic action that the elastic component produced, it is ejecting with the thin wall part when the die sinking to the produced decurrent packing power of balanced lower mould ensures foundry goods and last mould body laminating, makes whole foundry goods deviate from smoothly along with last mould, and the problem of foundry goods thin wall part atress deformation has improved the foundry goods quality when effectively having solved the die sinking.

The utility model discloses set up in the spacing groove that the locating part corresponds in the lower mould, highly restrict the locating part, prevent the backstepping in-process, the stroke is too big for the backstepping force is controllable.

The support rods of the utility model are symmetrically arranged, so that the force of the reverse thrust mechanism is balanced; the limiting groove is provided with a through hole which plays a guiding role on the supporting piece, so that the vertical upward thrust is ensured, and the stress stability is improved.

Drawings

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

Fig. 2 is a schematic view of the installation structure of the thrust reverser and the bottom plate of the present invention.

Fig. 3 is a schematic structural view of the lower mold of the present invention.

Fig. 4 is a schematic structural view of the structure of fig. 2 after being connected with a lower die.

FIG. 5 is a schematic structural view of the upper mold of the present invention

Fig. 6 is the utility model discloses take off the structure schematic diagram after the mould after the casting finishes.

In the figure: 1. an upper die; 11. pressing a groove; 2. a lower die; 21. a limiting cavity; 22. a through hole; 3. a base plate; 31. positioning a groove; 4. a limiting member; 5. a support member; 51. a top rod; 52. a support bar; 6. an elastic member; 7. casting; 71. and (4) a bracket.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, the low-pressure mold with the anti-deformation thrust reverser of the embodiment includes an upper mold 1, a lower mold 2, and a bottom plate 3 connected to the lower mold 2, wherein the bottom plate 3 is provided with a thrust reverser, as shown in fig. 2, the thrust reverser includes an elastic member 6, a limiting member 4 connected to the elastic member 6, and a supporting member 5 connected to the limiting member 4, as shown in fig. 3, a limiting cavity 21 matched with the limiting member 4 and a through hole 22 matched with the supporting member 5 are provided in the lower mold 2, and the supporting member 5 is provided corresponding to a part of a casting to be supported; after the upper die 1 and the lower die 2 are closed, a casting is formed in a main cavity, the structural bottom of a part to be supported is supported by the supporting piece 5, and the elastic piece 6 is in a pressing state; when the die is opened, the supporting piece 5 pushes out the part to be supported of the casting under the action of the elastic force of the elastic piece 6, so that the part to be supported of the casting is prevented from deforming under the tightening force of the lower die 2.

In the above embodiment, as a preferable mode, the elastic member 6 is a compression spring, one end of the compression spring is connected to the bottom surface of the limiting member 4, the other end of the compression spring is connected to the bottom plate 3, the supporting member 5 is in a rod-shaped structure, and a plurality of supporting members are distributed along the top surface of the limiting member 4, as shown in fig. 4, the supporting member 5 includes a push rod 51 for pushing the casting backward and a supporting rod 52 for abutting against the upper die 1.

In the above embodiment, the limiting cavity 21 is located on the lower surface of the lower die 2, and after the lower die 2 and the bottom plate 3 are fixedly connected, the position of the limiting member 4 is limited by the limiting cavity 21.

In the above embodiment, the openings at the two ends of the through hole 22 are respectively located at the bottom surface of the limiting cavity 21 and the upper surface of the lower die 2, and after the lower die 2 and the bottom plate 3 are fixedly connected, as shown in fig. 4, the top end of the supporting member 5 extends out of the through hole 22.

As shown in fig. 5, the bottom of the upper mold 1 is provided with a pressing groove 11 corresponding to the position of a part of the support rod 52.

Preferably, the support rods 52 are symmetrically disposed at two ends of the top surface of the limiting member 4, so that the entire thrust reverser is balanced in force.

When the upper die 1 and the lower die 2 are closed, the top end of the support rod 52 abuts against the pressure groove 11, the elastic piece 6 is compressed through the limiting piece 4, and the top end of the ejector rod 51 is suspended, so that the bottom surface of the bracket 71 (thin-wall part) on the molded casting 7 is abutted by the ejector rod 51 as shown in fig. 6.

In the above embodiment, as a preferable mode, the bottom plate 3 is provided with a positioning groove 31 on the upper surface, and one end of the elastic element 6 is connected with the bottom of the positioning groove 31.

The positioning groove 31 corresponds to the position of the limiting cavity 21, after the lower die 2 and the bottom plate 3 are fixedly connected, the positioning groove 31 and the limiting cavity 21 jointly form a cavity for accommodating the elastic element 6, and the limiting element 4 can be accommodated in the positioning groove 31.

In the above embodiment, the stopper 4 preferably has a plate-like structure.

The working principle of the utility model is as follows:

after the lower die 2 and the bottom plate 3 are fixedly connected, the limiting member 4 of the reverse thrust mechanism is limited in the limiting cavity 21, and meanwhile, the supporting member 5 extends out of the through hole 22, and at the moment, the compression spring serving as the elastic member 6 has a certain pretightening force. The upper die 1 and the lower die 2 are closed to form a cavity between the upper die and the lower die, at this time, the pressure groove 11 is abutted to the support rod 52, the limiting piece 4 moves downwards, and the compression spring is compressed and contracted. And starting casting, wherein the casting 7 is formed in the cavity, the thin-wall part bracket 71 on the casting is formed at the position corresponding to the reverse thrust mechanism, and the top end of the ejector rod 51 corresponds to the bottom end of the bracket 71. After the pressure maintaining for the molding process, when the casting 7 is taken out, the upper die 1 is opened, the pressure on the top of the ejector rod 51 is relieved, the ejector rod 51 is pushed upwards by the compression spring through the limiting piece 4, a thrust is provided for the support 71 from the lower side, so that the downward tightening force of the lower die 2 on the casting 7 is balanced during the die opening process, the casting 7 is attached to the upper die 1 body during the die opening process, the deformation caused by the uneven stress of the part of the easily-deformable support 71 is prevented, the casting 7 is smoothly separated from the upper die 1, and the quality of the casting 7 is improved.

Claims

1. The low-pressure die with the anti-support deformation thrust reverser comprises an upper die (1), a lower die (2) and a bottom plate (3) connected with the lower die (2), and is characterized in that the bottom plate (3) is provided with a thrust reverser, the thrust reverser structurally comprises an elastic piece (6), a limiting piece (4) connected with the elastic piece (6), and a supporting piece (5) connected with the limiting piece (4), a limiting cavity (21) matched with the limiting piece (4) and a through hole (22) matched with the supporting piece (5) are arranged in the lower die (2), and the supporting piece (5) is arranged corresponding to a part to be supported of a casting; when the upper die (1) and the lower die (2) are closed, a casting is formed in a main cavity, the structural bottom of the part to be supported is supported by the supporting piece (5), and the elastic piece (6) is in a compression state; when the die is opened, the supporting piece (5) pushes out the part to be supported of the casting under the action of the elastic force of the elastic piece (6) to prevent the part to be supported from deforming under the tightening force of the lower die (2).

2. The low-pressure die with the anti-support-deformation thrust reverser according to claim 1, wherein the elastic member (6) is a compression spring, one end of which is connected to the bottom surface of the limiting member (4), and the other end of which is connected to the bottom plate (3).

3. The low-pressure die with the anti-bracket deformation thrust reverser according to claim 2, wherein the supporting member (5) is of a rod-shaped structure, and a plurality of supporting rods (51) for pushing back the casting and supporting rods (52) for abutting against the upper die (1) are distributed along the top surface of the limiting member (4).

4. The low-pressure die with the anti-support-deformation thrust reverser according to claim 3, wherein the limiting cavity (21) is located on the lower surface of the lower die (2), and after the lower die (2) and the bottom plate (3) are fixedly connected, the position of the limiting piece (4) is limited by the limiting cavity (21).

5. The low-pressure die with the anti-support-deformation thrust reverser according to claim 4, wherein the orifices at the two ends of the through hole (22) are respectively located on the bottom surface of the limiting cavity (21) and the upper surface of the lower die (2), and after the lower die (2) and the bottom plate (3) are fixedly connected, the top end of the support member (5) extends out of the through hole (22).

6. The low-pressure die with the support deformation and thrust reverser according to claim 5, wherein the bottom of the upper die (1) is provided with a pressing groove (11) corresponding to the position of the support rod (52); after the upper die (1) and the lower die (2) are assembled, the top end of the supporting rod (52) is in butt joint with the pressure groove (11), the elastic piece (6) is compressed through the limiting piece (4), and meanwhile, the top end of the ejector rod (51) is suspended.

7. The low-pressure die with the anti-support-deformation thrust reverser according to claim 3, wherein the support rods (52) are symmetrically arranged at two ends of the top surface of the limiting piece (4).

8. The low-pressure die with the anti-deformation thrust reverser according to claim 2, wherein the bottom plate (3) is provided with a positioning groove (31) on the upper surface, and one end of the elastic member (6) is connected with the bottom of the positioning groove (31).

9. The low-pressure mold with the anti-deformation thrust reverser according to claim 8, wherein the positioning groove (31) corresponds to the position of the limiting cavity (21), after the lower mold (2) and the bottom plate (3) are fixedly connected, the positioning groove (31) and the limiting cavity (21) jointly form a cavity for accommodating the elastic element (6), and the limiting element (4) can be accommodated in the positioning groove (31).