CN216028014U

CN216028014U - Low-pressure casting die device

Info

Publication number: CN216028014U
Application number: CN202122065920.XU
Authority: CN
Inventors: 陶家升
Original assignee: Harbin Chunxin Machinery Manufacturing Co ltd
Current assignee: Harbin Chunxin Machinery Manufacturing Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-15
Anticipated expiration: 2031-08-30

Abstract

The utility model provides a low-pressure casting die device, which relates to the technical field of casting dies and comprises a die main body, a base and a top cover, wherein the base is fixedly connected below the die main body, the top cover is movably connected above a die main body, a booster pump is fixedly connected above the side of the base, a cavity is arranged on the side of a positioning frame, a pressing block is movably connected in the cavity on the side of the positioning frame, because the prior mould has poor fixing effect, the shrinkage and expansion of the bottom mould can be serious, thereby affecting the precision of the mould, affecting the size of a casting and easily causing deformation, when the mould expands due to high internal air pressure during casting, pressure spring rebounds when the mould extrudes the upper and lower side pressing plates to resist compression, the lower pressing plate pushes the compression resistance downwards in the upper floating groove through the floating plate fixedly connected with the side end, the fixing effect of the mould is improved, the mould is not easy to deform, and the precision of the mould after casting is improved.

Description

Low-pressure casting die device

Technical Field

The utility model relates to the technical field of automobile casting molds, in particular to a low-pressure casting mold device.

Background

At present, the mold industry develops rapidly and brings great convenience to the manufacturing industry, the mold is the root of the low-pressure casting industry, the existing automobile hub is mostly manufactured by the mold, the stability and the like of the automobile hub in the driving process of the automobile are related to the quality and the reliability of the automobile hub at the manufacturing position of the mold, and the hub is required to have the characteristics of light rigidity and quality and the like, so that the safety and comfort of the driving of the automobile are improved

The existing mold has poor fixing effect, and shrinkage and expansion of the bottom mold can be serious, so that the accuracy of the mold is influenced, the size of a casting is influenced, and deformation is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the prior mold has poor fixing effect, the shrinkage and expansion of a bottom mold are serious, the accuracy of the mold is influenced, the size of a casting is influenced, and deformation is easily caused, so that a low-pressure casting mold device is needed.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a low pressure casting die set, includes mould main part, base and top cap, base fixed connection is in the below of mould main part, top cap swing joint is in the top of mould host computer, base side top fixedly connected with booster pump, booster pump below fixedly connected with air duct, the bottom is provided with the holding down plate in the mould main part, be provided with the locating rack on the mould main part inner wall, the cavity has been seted up to locating rack side, swing joint has the briquetting in the cavity of locating rack side.

Preferably, the locating rack side cavity is provided with sliding grooves in the upper inner wall and the lower inner wall of the two sides, the pressing block is in a trapezoidal arrangement, and the sliding blocks are fixedly connected to the two sides of the pressing block.

Preferably, slider side sliding connection is in the spout, the briquetting side rotates and is connected with the threaded rod, and threaded rod side threaded connection is on the mould main part lateral wall.

Preferably, the bottom of the lower pressing plate is fixedly connected with a pressure spring, the two sides of the lower pressing plate are provided with upper floating grooves, and the two sides of the lower pressing plate are fixedly connected with floating plates.

Preferably, the floating plate side end is embedded in the upper floating groove, the pressure spring is fixedly connected to the lower portion of the top cover, and the upper pressure plate is fixedly connected to the bottom end of the pressure spring.

Preferably, the top end of the upper pressure plate is fixedly connected with a push rod, exhaust channels are formed in two sides of the upper portion of the top cover, and the upper portion of the push rod is embedded in the exhaust channels.

Preferably, the inner wall of the exhaust channel is hinged with a closed cover, and the top end of the ejector rod is attached to the lower side of the closed cover.

Preferably, the air duct is U-shaped, and the top end of the air duct is fixedly communicated with the bottom in the die main body.

Has the advantages that:

this kind of low pressure casting die device is provided with the locating rack on through mould main part inner wall, the spout has been seted up on the locating rack inner wall, push the briquetting forward through rotating side threaded rod, the slider that the briquetting both sides set up impels forward in the spout and pushes and fix on mould side, be trapezoidal shape setting through the slider, it is better to make its front end extrusion fix the effect in automobile wheel hub side, bottom pass through pressure spring fixedly connected with top plate and holding down plate in top cap and the mould main part, the mould is when the higher messenger's mould inflation of inside atmospheric pressure when casting, pressure spring resilience carries out the resistance to compression during the both sides clamp plate about the mould extrusion, the holding down plate pushes the resistance to compression downwards at last buoyancy tank through side fixed connection's kickboard, the fixed effect of mould has been improved, non-deformable, the precision after the mould casting has been promoted.

This kind of low pressure casting die device has seted up exhaust passage through top cap top both sides, and top board top fixedly connected with ejector pin when internal pressure was too high to promote the top board upper pressure, promotes the upwards upset of articulated closing cap in the exhaust passage through the ejector pin to the top to open exhaust passage and discharge inside atmospheric pressure, make its inside quick step-down, prevent that inside die block shrink and inflation are serious, stability when having improved the mould casting.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the front structure of the present invention;

FIG. 3 is an enlarged view of FIG. 2A of the present invention;

illustration of the drawings:

the device comprises a die main body-1, a positioning frame-2, a sliding groove-21, a threaded rod-3, an upper floating groove-4, a floating plate-41, a base-5, a lower pressing plate-6, a pressure spring-61, a booster pump-7, an air duct-71, a pressing block-8, a sliding block-81, an exhaust channel-9, an ejector rod-91, a closed cover-92 and a top cover-10.

Detailed Description

Referring to fig. 1-3, a low pressure casting mold device, comprising a mold main body 1, a base 5 and a top cover 10, wherein the base 5 is fixedly connected below the mold main body 1, the mold main body 1 is fixed and supported by the base 5, so that the mold is more stable during casting, the top cover 10 is movably connected above the mold main body 1, the mold main body 1 is pressed above the mold by covering the top cover 10 during casting, so as to improve the fixing effect during casting of the mold, improve the accuracy after casting of the mold, a booster pump 7 is arranged above the side of the base 5, an air duct 71 is fixedly connected below the booster pump 7, when the internal pressure of the mold main body 1 is too low, the air duct 71 transmits air pressure into the air duct 71, the air duct 71 transmits the air duct into the mold main body 1 for pressurization, a positioning frame 2 is arranged on the inner wall of the mold main body 1, a cavity is arranged at the side of the positioning frame 2, swing joint has briquetting 8 in the locating rack 2, including inlaying briquetting 8 through the cavity, briquetting 8 fixes the mould, makes the fixed effect of its mould main part 1 when casting the mould better, and the bottom is provided with holding down plate 6 in the mould

main part

1, and 8 cooperation holding down plates of briquetting 6 are fixed the mould, and stability when having improved the mould casting makes its mould casting back precision higher.

As shown in figure 2, the locating rack 2 has the cavity on the side and has the upper and lower inner walls of the side, the sliding grooves 21 are provided, the pressing block 8 is in a trapezoidal arrangement, the sliding blocks 81 are fixedly connected to the two sides of the pressing block 8, when the pressing block 8 moves to the side, the pressing block 8 is supported by the sliding blocks 81 on the sliding grooves 21 to move to the side, the pressing block 8 is pressed on the die to be fixed better, and the pressing block 8 is moved and contracted in the locating rack 2, so that the die can be taken out more conveniently after being cast.

As shown in fig. 2, the sliding block 81 is slidably connected to the side of the sliding groove 21, the pressing block 8 is connected to the side of the threaded rod 3 in a rotating manner, the side of the threaded rod 3 is connected to the side wall of the mold body 1 in a threaded manner, the threaded rod 3 penetrates through the side wall of the mold body 1 in a side of the pressing block 8 in a threaded manner, and the pressing block 8 is pulled to move in the positioning frame 2 by rotating the threaded rod 3, so that the mold is fixed in the mold body 1 more efficiently during casting.

As shown in fig. 2, the bottom of the lower pressing plate 6 is fixedly connected with a pressure spring 61, the two sides of the lower pressing plate 6 are provided with upper floating grooves 4, the two sides of the lower pressing plate 6 are fixedly connected with floating plates 41, the bottom end of the die body 1 is provided with a limiting groove, the bottom end of the pressure spring 61 is fixedly connected in the limiting groove, so that the lower pressing plate 6 is downwards extruded when the die is cast, and the lower pressing plate 6 downwards extrudes the pressure spring 61 to buffer the extrusion force of the pressure spring, so that the die is more stable when the die is cast.

As shown in fig. 2, the side end of the floating plate 41 is embedded in the upper floating groove 4, the pressure spring 61 is fixedly connected below the top cover 10, the bottom end of the pressure spring 61 is fixedly connected with an upper pressure plate, the bottom of the upper floating groove 4 is provided with an end lifting area, when the pressure spring 61 presses down the lower pressure plate 6, the lower pressure plate 6 drives the floating plates 41 on two sides to move downwards in the upper floating groove 4, the lower pressure plate 4 moves downwards to be limited to the bottommost area of the upper floating groove 41, the pressure spring 61 is prevented from being pressed down by the lower pressure plate 6, and the accuracy of the mold during casting is influenced.

As shown in fig. 2, the top end of the upper plate is fixedly connected with a top rod 91, the exhaust channel 9 is arranged on two sides above the top cover 10, the top of the top rod 91 is embedded in the exhaust channel 9, the top rod 91 is arranged below the exhaust channel 9, and when the upper plate upwards extrudes the pressure spring 61, the top rod 91 is pushed to upwards extend.

As shown in fig. 3, a closed cover 92 is hinged on the inner wall of the exhaust channel 9, the top end of the ejector rod 91 is attached below the closed cover 92, the upper pressing plate pushes the upper ejector rod 91 upwards after being extruded upwards, so that the ejector rod 91 supports the closed cover 92 above, the exhaust channel 9 is opened to exhaust the internal air pressure, and the exhaust and decompression during the casting of the internal mold are more flexible.

As shown in figure 2, the air duct 71 is U-shaped, the top end of the air duct 71 is fixedly communicated with the bottom in the die body 1, the air duct 71 is integrally hidden in the base 5, and after the air duct 71 is protected by the base 5, the air duct is more convenient to pressurize in the die body 1 by the booster pump 7.

As shown in fig. 2, a spring is fixedly connected to the bottom side of the closing cover 92, the spring is fixedly connected to the inner wall of the exhaust passage 9, after the ejector rod 91 props up the closing cover and exhausts and reduces pressure in the mold body 1, after the upper press plate moves downwards through the pressure spring 61, the ejector rod 91 moves downwards from the exhaust passage 9, the closing cover seals the exhaust passage 9 through the resilience of the spring, the interior is kept at low pressure, and the mold casting is more stable,

the working principle is as follows: the bottom of the main body 1 of the die is provided with a base 5 for supporting and fixing the main body 1 of the die, after a top cover 10 is covered and sealed above the main body 1 of the die, a lateral threaded rod 3 is rotated to push a pressing block 8 forwards, the pressing block 8 slides laterally in a sliding groove 21 formed on the inner wall of a positioning frame 2 through lateral sliding blocks 81, the pressing block 8 is pushed forwards and pressed to be fixed on the lateral side of the die, when the die is cast, the internal air pressure is high, so that the die expands, when the upper pressing plate and the lower pressing plate are pressed by the die, a pressure spring 61 rebounds to resist pressure, a lower pressing plate 6 pushes downwards in an upper floating groove 4 through a floating plate 41 fixedly connected with the lateral end, when the upper pressing plate is pressed upwards, a mandril 91 pushes towards the top end, the mandril 91 pushes upwards in an exhaust channel 9 to push a closing cover 92 to turn upwards, so that the exhaust channel 9 is opened to exhaust the internal air pressure, so that the internal pressure is reduced rapidly, when the internal pressure of the main body 1 of the die is too low, by opening the booster pump 7, air pressure generated by the booster pump 7 is discharged into the mold main body 1 through the bottom air duct 71 to be pressurized, so that low pressure is kept in the mold main body 1, and the stability of the mold during casting is improved.

Claims

1. The utility model provides a low pressure casting die set, includes mould main part (1), base (5) and top cap (10), base (5) fixed connection is in the below of mould main part (1), top cap (10) swing joint is in the top of mould main part (1), base (5) side top fixedly connected with booster pump (7), booster pump (7) below fixedly connected with air duct (71), its characterized in that: the bottom is provided with holding down plate (6) in mould main part (1), be provided with locating rack (2) on mould main part (1) inner wall, the cavity has been seted up to locating rack (2) side, swing joint has briquetting (8) in locating rack (2) side cavity.

2. The low-pressure casting die device as claimed in claim 1, wherein sliding grooves (21) are formed in the inner walls of the upper side and the lower side of the cavity on the sides of the positioning frame (2), the pressing block (8) is in a trapezoidal arrangement, and sliding blocks (81) are fixedly connected to the two sides of the pressing block (8).

3. The low-pressure casting die device as claimed in claim 2, wherein the sliding block (81) is laterally slidably connected in the sliding groove (21), the side end of the pressing block (8) is rotatably connected with the threaded rod (3), and the side end of the threaded rod (3) is in threaded connection with the side wall of the die main body (1).

4. The low-pressure casting die device as claimed in claim 1, wherein a pressure spring (61) is fixedly connected to the bottom of the lower pressing plate (6), upper floating grooves (4) are formed in two sides of the lower pressing plate (6), and floating plates (41) are fixedly connected to two sides of the lower pressing plate (6).

5. The low pressure casting die device according to claim 4, wherein the side end of the floating plate (41) is embedded in the upper floating groove (4), a pressure spring (61) is fixedly connected below the top cover (10), and an upper pressing plate is fixedly connected to the bottom end of the pressure spring (61).

6. The low-pressure casting die device as claimed in claim 5, wherein a top rod (91) is fixedly connected to the top end of the upper pressure plate, exhaust channels (9) are formed in two sides above the top cover (10), and the top of the top rod (91) is embedded in the exhaust channels (9).

7. The low-pressure casting die device as claimed in claim 6, wherein a closing cover (92) is hinged to the inner wall of the exhaust channel (9), and the top end of the ejector rod (91) is attached to the lower portion of the closing cover (92).

8. The low-pressure casting die device as claimed in claim 1, wherein the air duct (71) is U-shaped, and the top end of the air duct (71) is fixedly communicated with the bottom in the die main body (1).