CN217343414U

CN217343414U - Die for preforming of inner star wheel

Info

Publication number: CN217343414U
Application number: CN202123389369.0U
Authority: CN
Inventors: 陈爱芬; 钱伟; 张海峰; 王荣波; 张海剑
Original assignee: Jiangsu Liken Technology Co ltd
Current assignee: Jiangsu Liken Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-09-02
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a mould of interior star gear preforming, including last mould and lower mould, the last mould includes cope match-plate pattern, upper punch, upper padding plate, upper die circle and upper die, and the upper padding plate is located the cope match-plate pattern, and the upper punch is arranged in the upper padding plate, and the upper die circle is located in the upper padding plate, and the upper die is located in the upper die circle, and the upper punch passes the upper die, and the lower terminal surface central downward bulge of upper die forms the boss, forms the step between boss and the upper die; the lower die comprises a lower die plate, a lower punch, an ejector rod, a lower cushion plate, a lower die ring and a lower concave die, the lower cushion plate is arranged on the lower die plate, the lower die ring is arranged in the lower cushion plate, the lower concave die is arranged in the lower die ring, a groove is formed in the lower concave die, a first pressure block is arranged below the lower concave die, a second pressure block is arranged between the first pressure block and the lower cushion plate, a through hole is formed in the first pressure block, the lower punch is arranged in the through hole, and the ejector rod penetrates through the lower die plate and is connected with the lower punch; the die is simple to assemble, easy to operate by workers, short in production period and low in cost.

Description

Die for preforming of inner star wheel

Technical Field

The utility model relates to a mould, concretely relates to mould of interior star gear preforming belongs to the machine-building field.

Background

The inner star wheel is a main body part of the universal coupling, is applied in a large number of matching ways in automobiles, tractors and engineering machinery, belongs to a special-shaped part with a symmetrical structure, is preformed by a conventional star sleeve product and is pre-upset and annealed in reverse extrusion, although the precision is high, the forming period is long and the efficiency is low, and the technical problem to be solved by technical personnel in the field is earnestly researched and developed, wherein the technical problem can be overcome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome prior art's shortcoming, provide a mould in interior star gear preforming, this mould assembly is simple, easily workman's operation, uses this mould production cycle short, and is with low costs.

In order to solve the technical problem, the utility model provides a mould of interior star gear preforming, including last mould and lower mould, the center after the lower terminal surface of going up the mould and the up end of lower mould enclose to close forms the die cavity that can forge interior star gear preforming, wherein:

the upper die comprises an upper die plate, an upper punch, an upper backing plate, an upper die ring and an upper female die, the upper backing plate is arranged on the lower surface of the upper die plate through screws, the upper punch is arranged in the upper backing plate, the upper die ring is positioned below the upper punch, the upper female die is arranged in the upper die ring in an interference fit manner, the upper female die is of a hollow structure, the upper punch penetrates through the upper female die to extrude a blank, a boss is formed in the center of the lower end surface of the upper female die in a downward protruding manner, and a step is formed between the boss and the upper female die;

the lower die comprises a lower die plate, a lower punch, a push rod, a lower backing plate, a lower die ring and a lower concave die, wherein the lower backing plate is arranged on the upper surface of the lower die plate through screws, the lower die ring is arranged in the lower backing plate, the lower concave die is arranged in the lower die ring in an interference fit mode, the lower concave die is of a hollow structure, a groove is formed in the lower concave die in a concave mode and used for placing a blank, a first pressure block is arranged below the lower concave die, a plurality of second pressure blocks are arranged between the first pressure block and the lower backing plate, a through hole corresponding to the hollow structure of the lower concave die is formed in the first pressure block, the lower punch is arranged in the through hole, the push rod penetrates through the lower die plate and is connected with the lower punch, and the push rod pushes a preformed inner star wheel to push out one end distance from the lower concave die.

The utility model discloses the technical scheme who further injects is:

furthermore, in the die for preforming the inner star wheel, the upper die ring is fixedly connected with the upper base plate through a first reinforcing ring arranged outside the upper die ring.

The technical effect is that the welding is not direct, the first reinforcing ring is added, so that the upper die ring and the upper backing plate are stably connected, the normal operation of work is ensured, the efficiency is improved, and the installation and the disassembly are convenient.

In the die for preforming the inner star wheel, the inner diameter of the boss in the upper female die is matched with the inner diameter of the preformed inner star wheel.

In the die for preforming the inner star wheel, the outer diameter of the step on the upper female die is matched with the outer diameter of the preformed inner star wheel.

In the die for preforming the inner star wheel, the lower die ring is fixedly connected with the lower backing plate through the second reinforcing ring arranged outside the lower die ring.

The technical effect is that the lower die ring and the lower backing plate are stably connected by adding the second reinforcing ring instead of direct welding fixation, the normal operation of work is ensured, the efficiency is improved, and the installation and the disassembly are convenient.

In the die for preforming the inner star wheel, the inner diameter of a groove in the lower concave die is matched with the outer diameter of the preformed inner star wheel.

The beneficial effects of the utility model are that:

the utility model discloses not only further increased prestressing force, reduced the risk of fracture, great improvement the life-span of mould, the consumptive material is few moreover, and is with low costs, mould structure optimization simultaneously.

The utility model discloses to the special mould design of interior star gear preforming, solved if according to original preforming design upset annealing in advance in reverse extrusion earlier, product production cycle is long, and manufacturing cost is high, and the mould structure is changed into whole by original components of a whole that can function independently, has solved production cycle length, problem with high costs, just the utility model discloses the assembly is simple, easily with trading the maintenance, easily workman's operation and practiced thrift the processing cost and the mould manufacturing cost of upset annealing twice process in advance.

Drawings

Fig. 1 is a schematic view of a mold for preforming an inner star wheel according to the present invention;

in the figure: 1-an upper template, 2-an upper punch, 3-an upper backing plate, 4-an upper die ring, 5-an upper female die, 6-a boss, 7-a step, 8-a lower template, 9-a lower punch, 10-a top rod, 11-a lower backing plate, 12-a lower die ring, 13-a lower female die, 14-a groove, 15-a first pressure block, 16-a second pressure block, 17-a through hole, 18-a first reinforcing ring and 19-a second reinforcing ring.

Detailed Description

Example 1

The preformed mould of interior star gear that this embodiment provided, the structure is shown in fig. 1, including last mould and lower mould, the center after the lower terminal surface of going up the mould and the up end of lower mould enclose to close forms the preformed die cavity of a malleable interior star gear, wherein:

the upper die comprises an upper die plate 1, an upper punch 2, an upper base plate 3, an upper die ring 4 and an upper female die 5, wherein the upper base plate 3 is arranged on the lower surface of the upper die plate 1 through screws, the upper punch 2 is arranged in the upper base plate 3, the upper die ring 4 is positioned below the upper punch 2, the upper female die 5 is arranged in the upper die ring 4 in an interference fit manner, the upper female die 5 is of a hollow structure, the upper punch 2 penetrates through the upper female die 5 to extrude a blank, a boss 6 is formed in the center of the lower end surface of the upper female die 5 in a downward protruding manner, and a step 7 is formed between the boss 6 and the upper female die 5;

the lower die comprises a lower die plate 8, a lower punch 9, an ejector rod 10, a lower cushion plate 11, a lower die ring 12 and a lower concave die 13, wherein the lower cushion plate 11 is arranged on the upper surface of the lower die plate 8 through screws, the lower die ring 12 is arranged in the lower cushion plate 11, the lower concave die 13 is arranged in the lower die ring 12 in an interference fit mode, the lower concave die 13 is of a hollow structure, the lower concave die 13 is concave inwards to form a groove 14 for placing a blank, a first pressure block 15 is arranged below the lower concave die 13, a plurality of second pressure blocks 16 are arranged between the first pressure blocks 15 and the lower cushion plate 11, a through hole 17 corresponding to the hollow structure of the lower concave die 13 is formed in the first pressure block 15, the lower punch 9 is arranged in the through hole 17, the ejector rod 10 penetrates through the lower die plate 8 to be connected with the lower punch 9, and the ejector rod 10 pushes the lower punch 9 to eject a preformed inner star wheel out by a distance from the lower concave die 13.

In the present embodiment, the upper die ring 4 is fixedly connected with the upper backing plate 3 through a first reinforcing ring 18 arranged outside the upper die ring 4.

In the present embodiment, the inner diameter of the projection 6 in the upper female die 5 is adapted to the inner diameter of the preformed inner star wheel.

In the present exemplary embodiment, the outer diameter of the step 7 on the upper die 5 is adapted to the outer diameter of the preformed internal star wheel.

In the present embodiment, the lower die ring 12 is fixedly connected with the lower backing plate 11 through a second reinforcing ring 19 arranged outside the lower die ring 12.

In the present exemplary embodiment, the inner diameter of the recess 14 in the lower shell 13 is adapted to the outer diameter of the preformed inner star wheel.

The utility model provides a this kind of product production cycle long, problem with high costs, material saving, it is easy to improve the efficiency assembly, and longe-lived, practices thrift the mould cost.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent replacement or equivalent transformation fall within the protection scope required by the utility model.

Claims

1. A pre-forming die for an internal star wheel is characterized in that: including last mould and lower mould, the center after the lower terminal surface of going up the mould and the up end of lower mould enclose to close forms the preformed die cavity of a forgeable interior star gear, wherein:

the upper die comprises an upper die plate (1), an upper punch (2), an upper base plate (3), an upper die ring (4) and an upper female die (5), the upper base plate (3) is arranged on the lower surface of the upper die plate (1) through screws, the upper punch (2) is arranged in the upper base plate (3), the upper die ring (4) is positioned below the upper punch (2), the upper female die (5) is arranged in the upper die ring (4) in an interference fit manner, the upper female die (5) is of a hollow structure, the upper punch (2) penetrates through the upper female die (5) to extrude a blank, a boss (6) is formed in the center of the lower end surface of the upper female die (5) in a downward protruding manner, and a step (7) is formed between the boss (6) and the upper female die (5);

the lower die comprises a lower die plate (8), a lower punch (9), an ejector rod (10), a lower cushion plate (11), a lower die ring (12) and a lower concave die (13), the lower cushion plate (11) is arranged on the upper surface of the lower die plate (8) through screws, the lower die ring (12) is arranged in the lower cushion plate (11), the lower concave die (13) is arranged in the lower die ring (12) in an interference fit manner, the lower concave die (13) is of a hollow structure, a concave forming groove (14) is formed in the lower concave die (13) and used for placing a blank, a first pressure block (15) is arranged below the lower concave die (13), a plurality of second pressure blocks (16) are arranged between the first pressure block (15) and the lower cushion plate (11), a through hole (17) corresponding to the hollow structure of the lower concave die (13) is arranged in the first pressure block (15), and the lower punch (9) is arranged in the through hole (17), the ejector rod (10) penetrates through the lower die plate (8) to be connected with the lower punch (9), and the ejector rod (10) pushes the lower punch (9) to eject the preformed inner star wheel out of the lower concave die (13) by a distance.

2. The mold for internal starwheel preforming of claim 1, wherein: the upper die ring (4) is fixedly connected with the upper backing plate (3) through a first reinforcing ring (18) arranged outside the upper die ring (4).

3. The mold for internal starwheel preforming of claim 1, wherein: the inner diameter of a boss (6) in the upper female die (5) is matched with the inner diameter of the preformed internal star wheel.

4. The mold for internal starwheel preforming of claim 3, wherein: and the outer diameter of the step (7) on the upper female die (5) is matched with the outer diameter of the preformed internal star wheel.

5. The mold for internal starwheel preforming of claim 1, wherein: the lower die ring (12) is fixedly connected with the lower backing plate (11) through a second reinforcing ring (19) arranged outside the lower die ring (12).

6. The mold for preforming an besides-star wheel as claimed in claim 1, wherein: the inner diameter of a groove (14) in the lower female die (13) is matched with the outer diameter of the preformed inner star wheel.