CN219151572U

CN219151572U - Device for solving appearance defect during powder metallurgy part pressing

Info

Publication number: CN219151572U
Application number: CN202320134289.0U
Authority: CN
Inventors: 雷相兵; 严明俊; 徐彪; 李洪
Original assignee: Chongqing Huafu New Material Technology Co ltd
Current assignee: Chongqing Huafu New Material Technology Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-09
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a device for solving appearance defects during powder metallurgy part pressing, which comprises a blowing and dust collection integrated device and a forming die, wherein the forming die comprises a female die with a cavity, an upper die assembly capable of moving up and down is arranged above the female die, a lower die assembly capable of moving up and down is arranged below the female die, the upper die assembly and the lower die assembly can both extend into the cavity of the female die, the blowing and dust collection integrated device comprises at least two groups of blowing heads and a dust collection cover, the blowing heads and the dust collection cover are arranged above the female die and face the cavity of the female die, the blowing heads are connected with a high-pressure gas pipeline, and the dust collection cover is connected with a negative pressure pipeline. The blowing head provides high-pressure gas blowing to the cavity through the high-pressure gas pipeline, the high-pressure gas blows up the blocky black skin positioned between the punches, and the dust hood sucks away the blocky black skin positioned in the lower membrane assembly through the negative pressure pipeline, so that the appearance problems of air holes, sand holes and the like caused by blocky matters during pressing can be solved.

Description

Device for solving appearance defect during powder metallurgy part pressing

Technical Field

The utility model belongs to the technical field of powder metallurgy processing, and particularly relates to a device for solving appearance defects in powder metallurgy part pressing.

Background

In order to reduce the cost of the bearing cover, most of the bearing covers are manufactured in a powder metallurgy mode, part of powder is not utilized in the pressing and forming process of the bearing cover, block black skin is generated in a gap between the dies, the powder flows into a cavity of a female die in the subsequent pressing process, the powder is formed in a product in the subsequent pressing process, and the pressed product with the black skin can form appearance defects such as air holes and sand holes in the sintering process.

In the prior art, in order to reduce the appearance defect of the bearing cover during sintering, the forming die can be cleaned regularly, and the labor is not only needed during cleaning, but also the compression forming of the bearing cover is suspended, so that the production efficiency of the bearing cover is affected.

Disclosure of Invention

The utility model aims to provide a device for solving the appearance defect of a powder metallurgy part during pressing, which not only reduces the input of manpower, but also does not influence the pressing forming efficiency of the powder metallurgy part.

The technical scheme adopted by the utility model is as follows: the utility model provides a device for solving appearance defect when powder metallurgy spare suppresses, including blowing up dust absorption integrated device and be used for realizing powder metallurgy spare compression moulding's forming die, forming die is including the female die that has the die cavity, the top of female die is provided with the last die component that can reciprocate, the below of female die is provided with the lower die component that can reciprocate, and goes up die component and lower die component homoenergetic and stretch into in the female die cavity, blowing up dust absorption integrated device includes two at least groups and blows head and suction hood, blow head and suction hood all set up in the top of female die and towards the die cavity of female die, blow head and high-pressure gas piping connection, suction hood and negative pressure piping connection.

As the preferable in the above scheme, a pushing component capable of pushing out the pressed article is further arranged above the female die, the pushing component comprises a pair of chucks which are opposite left and right and can move oppositely, the two chucks are connected through a connecting plate arranged at the rear side, and the connecting plate can move back and forth through a telescopic component arranged at the rear of the connecting plate.

Further preferably, the blowing head is arranged in the middle of the dust hood.

Further preferably, the upper die assembly comprises an upper middle punch and upper side punches arranged on the left side and the right side of the upper middle punch, the upper middle punch and the upper side punches can move up and down, the lower die assembly comprises a lower middle punch and lower side punches arranged on the left side and the right side of the lower middle punch, the lower middle punch and the lower side punches can move up and down, a side core rod capable of moving up and down is arranged in the lower side punch, a through hole for the corresponding side core rod to go deep is vertically arranged on the upper side punch, a forming step for forming an outer side step of a bearing cover is arranged on the female die, an upper side punch outer ring is sleeved on the two upper side punches and used for hooping the upper middle punch and the two upper side punches, the upper side punch outer ring moves up and down along with the upper side punch, and the outer diameter of an inner hole of the upper side punch outer ring is equal to the outer diameter of the female die.

Further preferably, the upper end of the upper middle punch is provided with an upper middle punch connecting pad, the upper ends of the upper side punch and the upper middle punch connecting pad are both provided with a first pressing pad, the first pressing pad of the upper side punch is positioned below the first pressing pad of the upper middle punch connecting pad, and an annular first pressing ring is arranged above the first pressing pad of the upper middle punch connecting pad; the lower extreme coaxial side core rod connecting block that is provided with of side core rod, lower side towards and the lower extreme of side core rod connecting block all is provided with the second and presses the pad, lower side towards and the side core rod connecting block on the second press pad that corresponds set gradually from the top down, and the second press pad of below is located the second press pad inboard of top, lower side towards and lower side towards the second press pad of lower extreme down all correspond and be provided with annular second clamping ring.

Further preferably, the upper middle punch connecting pad, the upper side punch, the lower side punch and the lower middle punch are respectively provided with a mounting step, the upper middle punch connecting pad, the upper side punch, the lower side punch and the lower middle punch are respectively connected with respective pressing pads through corresponding pressing covers, the center of each pressing cover is respectively provided with a corresponding step hole corresponding to the mounting step, and each pressing cover is respectively sleeved on the corresponding mounting step.

The utility model has the beneficial effects that: the vacuum cleaner is provided with the blowing head and the dust hood, the blowing head provides high-pressure gas which is blown to the cavity through the high-pressure gas pipeline, the high-pressure gas blows up the blocky black skin positioned between the punches, the dust hood sucks away the blocky black skin positioned in the lower film assembly through the negative pressure pipeline, and therefore the appearance problems of air holes, sand holes and the like caused by the blocky objects during pressing can be solved.

Drawings

Fig. 1 is a schematic view of a press-formed middle bearing cap according to the present utility model (the upper view is a bottom view, and the lower view is a front view).

Fig. 2 is a schematic view of a molding die according to the present utility model.

Fig. 3 is a schematic view of the blow-up dust extraction integrated device and the push-out assembly in the present utility model.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 2-3, a device for solving appearance defects in powder metallurgy part pressing mainly comprises a blowing-up dust-absorbing integrated device and a forming die, wherein the forming die is used for realizing powder metallurgy part pressing forming, and the blowing-up dust-absorbing integrated device is used for taking away blocky black skin in the die. The forming die mainly comprises a female die 3 with a cavity, an upper die assembly capable of moving up and down is arranged above the female die 3, a lower die assembly capable of moving up and down is arranged below the female die 3, and the upper die assembly and the lower die assembly can extend into the cavity of the female die 3.

The specific structure of the blowing-up dust collection integrated device comprises at least two groups of blowing heads 15 and dust collection covers 16, wherein the blowing heads 15 and the dust collection covers 16 are arranged above the female die 3 and face to the cavity of the female die 3, the blowing heads 15 are connected with a high-pressure gas pipeline 17, and the dust collection covers 16 are connected with a negative pressure pipeline 18. In this embodiment, two sets of right and left opposed blowing heads 15 and suction hoods 16 are provided above the female mold.

In order to facilitate the removal of the molded parts out of the female mold, a push-out assembly capable of pushing out the molded articles is further arranged above the female mold 3, the specific structure of the push-out assembly comprises a pair of chucks 19 which are opposite left and right and can move oppositely, the two chucks 19 are connected through a connecting plate 20 arranged at the rear side, and a telescopic assembly 21 is arranged behind the connecting plate 20 for realizing the forward and backward movement of the connecting plate.

To improve the efficiency of blowing up the dust suction integrated device, the blowing head 15 is provided in the middle of the dust hood 16, and the dust hood is provided at the rear side of the connection plate. When the molded parts are pushed out, the block black skin in the mold is taken away.

The specific structure of the upper die assembly comprises an upper middle punch 1 and upper side punches 2 arranged on the left side and the right side of the upper middle punch 1, and the upper middle punch 1 and the upper side punches 2 can move up and down. The concrete structure of lower mould subassembly is including dashing 4 down and setting up dashing 5 down in dashing 4 left and right sides down, and dashing 4 down and lower side dashing 5 homoenergetic and reciprocate, be provided with the limit core rod 6 that can reciprocate in dashing 5 down, be provided with the through-hole that supplies corresponding side core rod 6 to go deep on dashing 2 on the upper edge, be provided with the shaping step that is used for shaping bearing cap outside step on female die 3, specific dashing in, upper edge dashes, female die, down dashing, lower edge dashes and the effect and the concrete structure of limit core rod are prior art, and no more detailed here.

The two upper punch 2 sleeves are provided with the upper punch outer ring 7 for hooping the upper punch 1 and the two upper punch 2, the upper punch outer ring 7 can move up and down along with the upper punch 2, the outer diameter of the inner hole of the upper punch outer ring 7 is equal to the outer diameter of the inner hole of the female die 3, the upper punch outer ring 7 not only ensures that when in pressing, only the upper punch 1 and the two upper punches 2 can enter the female die, but also can limit the pressing depth of the upper punch 1 and the two upper punches 2 by arranging the upper punch outer ring sleeve at the position outside the upper punch 2.

In order to facilitate the upper middle punch and the upper side punch to move up and down after being mounted, the upper end of the upper middle punch 1 is provided with an upper middle punch connecting pad 8, the upper ends of the upper side punch 2 and the upper middle punch connecting pad 8 are both provided with a first pressing pad 9, the first pressing pad 9 of the upper side punch 2 is positioned below the first pressing pad 9 of the upper middle punch connecting pad 8, and meanwhile, an annular first pressing ring 10 is arranged above the first pressing pad 9 of the upper middle punch connecting pad 8. The upper middle punch and the upper edge punch can independently move up and down through arranging corresponding telescopic cylinder assemblies at the upper ends of the first pressing pads 9 of the first pressing ring and the upper middle punch connecting pad 8. When only one group of telescopic cylinder assemblies is arranged at the upper end of the first pressing pad 9 of the first pressing ring and the upper middle punch connecting pad 8, the upper middle punch and the upper edge punch can move up and down together.

For the convenience of up-and-down movement of the side core rod, the side core rod and the side core rod are coaxially arranged at the lower end of the side core rod 6, the lower ends of the side core rod and the side core rod are respectively provided with a second press pad 12, the corresponding second press pads 12 on the side core rod and the side core rod are sequentially arranged from top to bottom, the lower second press pads 12 are positioned at the inner sides of the upper second press pads 12, and annular second press rings 13 are respectively and correspondingly arranged below the second press pads 12 at the lower ends of the lower side core rod and the lower side core rod 4. The telescopic cylinder assemblies are correspondingly arranged at the lower ends of the second pressing rings and the second pressing pads 12 positioned at the lower ends of the side core rod connecting blocks 11, so that the side core rods, the lower side punches and the lower middle punches can be correspondingly moved up and down independently.

In order to facilitate the installation of the upper middle punch connecting pad 8, the upper side punch 2, the lower side punch 5 and the lower middle punch 1 on the corresponding pressing pads, the upper middle punch connecting pad 8, the upper side punch 2, the lower side punch 5 and the lower middle punch 1 are respectively provided with installation steps, the upper middle punch connecting pad 8, the upper side punch 2, the lower side punch 5 and the lower middle punch 1 are respectively connected with the respective pressing pads through the corresponding pressing covers 14, the center of each pressing cover 14 is provided with a corresponding step hole corresponding to the installation step, and each pressing cover 14 is sleeved on the corresponding installation step.

Claims

1. The utility model provides a device for solving appearance defect when powder metallurgy spare suppresses, is including the forming die who is used for realizing powder metallurgy spare compression moulding, forming die is including female die (3) that have the die cavity, the top of female die (3) is provided with the last die component that can reciprocate, the below of female die (3) is provided with the lower die component that can reciprocate, and goes up die component and lower die component homoenergetic and stretch into in female die (3) die cavity, its characterized in that: the vacuum cleaner is characterized by further comprising a blowing-up dust collection integrated device, wherein the blowing-up dust collection integrated device comprises at least two groups of blowing heads (15) and a dust collection cover (16), the blowing heads (15) and the dust collection cover (16) are arranged above the female die (3) and face the cavity of the female die (3), the blowing heads (15) are connected with a high-pressure gas pipeline (17), and the dust collection cover (16) is connected with a negative pressure pipeline (18).

2. The apparatus for solving the appearance defects in pressing of powder metallurgy parts according to claim 1, wherein: the upper part of the female die (3) is also provided with a pushing-out assembly capable of pushing out the pressed article, the pushing-out assembly comprises a pair of chucks (19) which are opposite left and right and can move oppositely, the two chucks (19) are connected through a connecting plate (20) arranged at the rear side, and the connecting plate (20) can move forwards and backwards through a telescopic assembly (21) arranged at the rear of the connecting plate (20).

3. The apparatus for solving the appearance defects in pressing of powder metallurgy parts according to claim 1, wherein: the blowing head (15) is arranged in the middle of the dust hood (16).

4. The apparatus for solving the appearance defects in pressing of powder metallurgy parts according to claim 1, wherein: the die assembly comprises an upper middle punch (1) and upper side punches (2) arranged on the left side and the right side of the upper middle punch (1), the upper middle punch (1) and the upper side punches (2) can move up and down, the lower die assembly comprises a lower middle punch (4) and lower side punches (5) arranged on the left side and the right side of the lower middle punch (4), the lower middle punch (4) and the lower side punches (5) can move up and down, side core rods (6) capable of moving up and down are arranged in the lower side punches (5), through holes for the corresponding side core rods (6) to go deep are vertically formed in the upper side punches (2), forming steps for forming the outer side steps of a bearing cover are formed in the upper side punches (2), an upper side punch outer ring (7) is sleeved on the upper side punches the lower side of the lower die assembly, the upper side punch outer ring (7) is used for tightly punching the upper middle punch (1) and the lower side punches (2), the upper side outer ring (7) moves along with the upper side punches (2), and the outer diameter of the inner hole of the upper side punch (7) is equal to the outer diameter of the outer ring (3).

5. The apparatus for solving the appearance defects in pressing powder metallurgy parts according to claim 4, wherein: the upper end of the upper middle punch (1) is provided with an upper middle punch connecting pad (8), the upper ends of the upper side punch (2) and the upper middle punch connecting pad (8) are both provided with a first pressing pad (9), the first pressing pad (9) of the upper side punch (2) is positioned below the first pressing pad (9) of the upper middle punch connecting pad (8), and an annular first pressing ring (10) is arranged above the first pressing pad (9) of the upper middle punch connecting pad (8); the lower extreme coaxial side core rod connecting block (11) that is provided with of side core rod (6), lower side towards (4), lower side towards the lower extreme that (5) and side core rod connecting block (11) all are provided with second clamp pad (12), lower side towards (5), lower side towards (4) and side core rod connecting block (11) on corresponding second clamp pad (12) from the top down set gradually, and second clamp pad (12) of below are located second clamp pad (12) inboard of top, lower side towards (5) and lower side towards all corresponding second clamp ring (13) that are provided with under second clamp pad (12) of (4) lower extreme.

6. The apparatus for solving the appearance defects in pressing of powder metallurgy parts according to claim 5, wherein: the upper middle punch connecting pad (8), the upper side punch (2), the lower side punch (5) and the lower middle punch (4) are respectively provided with mounting steps, the upper middle punch connecting pad (8), the upper side punch (2), the lower side punch (5) and the lower middle punch (4) are respectively connected with respective pressing pads through corresponding pressing covers (14), the center of each pressing cover (14) is respectively provided with a corresponding step hole corresponding to the mounting step, and each pressing cover (14) is respectively sleeved on the corresponding mounting step.