CN212384505U

CN212384505U - Closed forging die capable of preventing blocked turning

Info

Publication number: CN212384505U
Application number: CN202020649292.2U
Authority: CN
Inventors: 徐荣生
Original assignee: ANHUI BEST TECHNOLOGY CO LTD
Current assignee: ANHUI BEST TECHNOLOGY CO LTD
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-22
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a prevent stifled car closed forging die, internal being equipped with of lower mould follow the vertical last installation cavity that runs through in die slot bottom, go up the installation cavity inner wall and be equipped with spacing step, unsteady mold core and spring are located go up the installation cavity, unsteady mold core periphery be equipped with go up spacing step complex first spacing arch, the spring is located unsteady mold core below, and the spring both ends are supported respectively and are leaned on unsteady mold core and lower mould bottom plate. Through the closed forging die of preventing stifled car of above-mentioned optimal design, through setting up the floating die core, go upward to the mold core through last spacing step and carry on spacingly, down the time spring supports the mold core, when the great blank of weight appears, unnecessary metal can increase the die cavity internal pressure, when pressure increases to spring rated load, the floating die core can move down to guarantee that the die cavity internal pressure can not infinitely increase and cause the mould spalling or stifled car, the part that exceeds on the work piece is amputated when dashing even the skin, and need not to increase the process.

Description

Closed forging die capable of preventing blocked turning

Technical Field

The utility model relates to a metal plastic forming field especially relates to a prevent stifled car closed forging die.

Background

In the field of metal plastic forming, when a workpiece (commonly called a 'rotating part') with a centrosymmetric shape is formed by closed forging, if the used equipment is a crank type forging press, the lower dead center is fixed, and once the workpiece is overloaded, the slide block is clamped at the position close to the lower dead center (commonly called 'stuffy car'), so that great waste is caused.

For the closed forging forming engineering mechanical part, the subsequent machining is automatic machining of a numerical control lathe, if the consistency of the size in the thickness direction is poor, a cutter is collided during the numerical control turning, and in order to control the size in the thickness direction, a 1000T closed single-point press is adopted as forming equipment. The specification of raw materials of the product adopts phi 130 hot rolled round steel through DF simulation, blanking is carried out by a numerical control sawing machine, a natural gas forging furnace is heated, a 1T air hammer is used for upsetting and peeling, a 1000T closed single-point press is used for forming, and a 400T punch is used for punching a center connecting sheet. Because the blanking weight of hot rolled steel is difficult to accurately control (actually plus or minus 0.06 kg), the bottom dead center is difficult to determine when the die is adjusted in production, the die cavity is increased to cause unfilled corners, the die cavity is reduced to cause stuffy car, and the die is required to be optimized.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem existing in the background technology, the utility model provides an anti-stuffiness car closed forging die.

The utility model provides a prevent stifled car closed forging die, include: the device comprises an upper die assembly, a lower die assembly, a floating die core and a spring;

go up the mould subassembly and include the mould bottom plate and install the last die body in last mould bottom plate below, it is protruding to go up the die body bottom, and the lower die subassembly includes the lower die bottom plate and installs the lower die body in lower die bottom plate top, and lower die body top is equipped with and goes up the protruding complex lower die cavity of mould, and internal being equipped with of lower mould follows the vertical last installation cavity that runs through in lower die bottom, it is equipped with last spacing step to go up the installation cavity inner wall, and unsteady mold core and spring are located go up the installation cavity, unsteady mold core periphery be equipped with go up the first spacing arch of spacing step complex, the spring is located unsteady mold core below, and the spring both.

Preferably, the device also comprises a device ejector rod and a mould ejector rod;

be equipped with on the lower mould bottom plate with go up the lower installation cavity that the installation cavity corresponds the setting, installation cavity inner wall is equipped with down spacing step down, and the equipment ejector pin is located down in the installation cavity, equipment ejector pin periphery be equipped with spacing protruding of spacing step complex second down, the floating die core middle part is equipped with the through-hole that runs through of vertical extension, the mould ejector pin lower extreme supports to lean on equipment ejector pin and upper end to pass run through the through-hole.

Preferably, a forming boss is arranged in the middle of the lower die cavity, and the upper mounting cavity extends downwards from the middle of the forming boss.

Preferably, the spring is a heavy disc spring.

The utility model discloses in, the internal follow that is equipped with of lower mould of preventing stifled car closed forging die that provides goes up the installation cavity that the die slot bottom is vertical to run through, go up the installation cavity inner wall and be equipped with spacing step, unsteady mold core and spring are located go up the installation cavity, unsteady mold core periphery be equipped with go up the first spacing arch of spacing step complex, the spring is located unsteady mold core below, and the spring both ends are supported respectively and are leaned on unsteady mold core and lower mould bottom plate. Through the closed forging die of preventing stifled car of above-mentioned optimal design, through setting up the floating die core, go upward to the mold core through last spacing step and carry on spacingly, down the time spring supports the mold core, when the great blank of weight appears, unnecessary metal can increase the die cavity internal pressure, when pressure increases to spring rated load, the floating die core can move down to guarantee that the die cavity internal pressure can not infinitely increase and cause the mould spalling or stifled car, the part that exceeds on the work piece is amputated when dashing even the skin, and need not to increase the process.

Drawings

Fig. 1 is a schematic structural view of the closed forging die for preventing the blocked car of the present invention.

Detailed Description

As shown in fig. 1, fig. 1 is a schematic structural diagram of a closed forging die for preventing a blocked car according to the present invention.

Referring to fig. 1, the utility model provides an anti-blocked closed forging die, which comprises an upper die assembly, a lower die assembly, a floating die core 3 and a spring 4;

go up the mould subassembly and include last mould bottom plate 11 and install the last die body 12 in last mould bottom plate 11 below, go up die body 12 bottom and be equipped with the mould arch, lower die assembly includes lower mould bottom plate 21 and installs the lower die body 22 in lower mould bottom plate 21 top, lower die body 22 top be equipped with last protruding complex lower die cavity, be equipped with in the lower die body 22 from the vertical last installation cavity that runs through in lower die cavity bottom, it is equipped with last spacing step to go up the installation cavity inner wall, and unsteady mold core 3 and spring 4 are located go up in the installation cavity, unsteady mold core 3 periphery be equipped with go up the first spacing arch of spacing step complex, spring 4 is located unsteady mold core 3 below, and spring 4 both ends are supported respectively and are leaned on unsteady mold core.

In this embodiment, the closed forging die of stifled car that provides, internal being equipped with of lower mould follow the vertical last installation cavity that runs through in die slot bottom, go up the installation cavity inner wall and be equipped with spacing step, unsteady mold core and spring are located go up the installation cavity, unsteady mold core periphery be equipped with spacing step complex first spacing arch on, the spring is located unsteady mold core below, and the spring both ends lean on respectively to float mold core and lower bottom plate. Through the closed forging die of preventing stifled car of above-mentioned optimal design, through setting up the floating die core, go upward to the mold core through last spacing step and carry on spacingly, down the time spring supports the mold core, when the great blank of weight appears, unnecessary metal can increase the die cavity internal pressure, when pressure increases to spring rated load, the floating die core can move down to guarantee that the die cavity internal pressure can not infinitely increase and cause the mould spalling or stifled car, the part that exceeds on the work piece is amputated when dashing even the skin, and need not to increase the process.

In the specific embodiment, the device comprises an equipment ejector rod 5 and a mould ejector rod 6;

a lower mounting cavity corresponding to the upper mounting cavity is arranged on the lower die bottom plate 21, a lower limiting step is arranged on the inner wall of the lower mounting cavity, the equipment ejector rod 5 is positioned in the lower mounting cavity, a second limiting bulge matched with the lower limiting step is arranged on the periphery of the equipment ejector rod 5, a vertically extending through hole is formed in the middle of the floating die core 3, the lower end of the die ejector rod 6 abuts against the equipment ejector rod 5, and the upper end of the die ejector rod penetrates through the through hole; after the molding is finished, the device ejector rod is pushed from the lower part, so that the die ejector rod is pushed to rise, and a product in the lower die cavity is upwards ejected for demolding.

In a specific design mode of the lower die body, a forming boss is arranged in the middle of the lower die cavity, and the upper mounting cavity extends downwards from the middle of the forming boss.

In the specific selection mode of the spring, the spring 4 adopts a heavy disc spring, so that the heavy load is ensured.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A closed forging die for preventing blocked turning is characterized by comprising: the upper die assembly, the lower die assembly, the floating die core (3) and the spring (4);

go up the mould subassembly and include last mould bottom plate (11) and install last die body (12) in last mould bottom plate (11) below, go up die body (12) bottom and be equipped with the mould arch, lower die subassembly includes lower mould bottom plate (21) and installs lower die body (22) in lower mould bottom plate (21) top, lower die body (22) top be equipped with last protruding complex lower die cavity, be equipped with in lower die body (22) and follow the vertical last installation cavity that runs through in lower die cavity bottom, it is equipped with spacing step to go up the installation cavity inner wall, and unsteady mold core (3) and spring (4) are located go up the installation cavity, unsteady mold core (3) periphery be equipped with go up spacing step complex first spacing arch, spring (4) are located unsteady mold core (3) below, and spring (4) both ends are supported respectively and are leaned on unsteady mold core (3.

2. The closed forging die of preventing the blocked lathe according to claim 1, further comprising a device ejector pin (5) and a die ejector pin (6);

be equipped with on lower mould bottom plate (21) with go up the lower installation cavity that the installation cavity corresponds the setting, installation cavity inner wall is equipped with down spacing step down, and equipment ejector pin (5) are located down in the installation cavity, equipment ejector pin (5) periphery be equipped with spacing arch of spacing step complex second down, floating mold core (3) middle part is equipped with the through-hole that runs through of vertical extension, and mould ejector pin (6) lower extreme supports to lean on equipment ejector pin (5) and upper end to pass run through the through-hole.

3. The anti-blind closed forging die of claim 1, wherein a forming boss is provided at a middle portion of the lower cavity, and the upper mounting cavity extends downward from the forming boss middle portion.

4. The anti-stuffiness car closing forging die according to claim 1, wherein the spring (4) is a heavy disc spring.