CN213671471U

CN213671471U - High-precision drawing die

Info

Publication number: CN213671471U
Application number: CN202022637123.XU
Authority: CN
Inventors: 王长土
Original assignee: Zhejiang Changhua Auto Parts Co ltd
Current assignee: Changhua Holding Group Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-13
Anticipated expiration: 2030-11-16

Abstract

The utility model provides a drawing die of high accuracy for large-scale foundry goods draws, drawing die includes mould and lower mould, the lower mould includes die carrier, mold core, backing plate, a plurality of nitrogen cylinder and a plurality of nitrogen top piece down, the die carrier includes lower mould upper plate, intermediate bottom plate and lower mould hypoplastron, lower mould upper plate, intermediate bottom plate and lower mould hypoplastron connect gradually, the nitrogen top piece sets up on the nitrogen cylinder, a plurality of the nitrogen cylinder sets up on the backing plate, the backing plate sets up in lower mould hypoplastron below, correspond the position of nitrogen cylinder and set up the through-hole in lower mould upper plate and lower mould hypoplastron, the nitrogen cylinder runs through the through-hole of lower mould hypoplastron, the nitrogen top piece protrusion in the through-hole of lower mould upper plate; the nitrogen cylinder is connected with a gas storage tank through a pipeline. The utility model discloses the mould reduces the debugging time of the mould on the stamping equipment; the stability of part is guaranteed, and the quality of part is effectively strengthened.

Description

High-precision drawing die

Technical Field

The utility model relates to a mould especially relates to a stable drawing die of large-scale part pressure source of automobile punching part of high accuracy.

Background

With the development of science and technology, the technology is advanced, automobile products are changed day by day, and almost indispensable articles are necessary for daily life of people, and each component part is preset according to design requirements during the design of the automobile and is assembled by connecting pieces and fasteners. These components, connectors and fasteners are used together to ensure the safety and comfort of the vehicle. Along with the development of the automobile industry, the demand of stamping parts on automobile bodies is larger and larger, the structure is more and more complex, the quality and the efficiency are more emphasized, and the requirement on the stamping parts is improved.

In the prior art, the dimensional accuracy and the requirement of large parts of automobile stamping parts are high, the dies are generally manufactured in the form of casting dies, and in order to control the rebound stability of the parts, the drawing process in the casting dies plays a critical role in manufacturing of the modified parts. The ejection force of the drawing die in the use process of the ejector rod process varies, and although the ejection force varies slightly, the part instability phenomenon occurs to parts with high strength and high precision requirements.

Accordingly, there is an elevated need in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drawing die of high accuracy is a drawing die of simple structure, precision height, pressure source stability to solve current technical problem.

In order to achieve the purpose, the utility model provides a drawing die with high precision for large casting drawing, the drawing die comprises an upper die and a lower die, the lower die comprises a lower die frame, a die core, a base plate, a plurality of nitrogen cylinders and a plurality of nitrogen jacking blocks, the lower die frame comprises a lower die upper plate, a middle supporting plate and a lower die lower plate, the lower die upper plate, the middle supporting plate and the lower die lower plate are connected in sequence, the nitrogen jacking blocks are arranged on the nitrogen cylinders, the plurality of nitrogen cylinders are arranged on the base plate, the base plate is arranged below the lower die lower plate, through holes are arranged on the lower die upper plate and the lower die lower plate at positions corresponding to the nitrogen cylinders, the nitrogen cylinders penetrate through the through holes of the lower die lower plate, and the nitrogen jacking blocks protrude out of the through holes of the; the nitrogen cylinder is connected with a gas storage tank through a pipeline.

According to the utility model discloses preferred embodiment drawing die, the assembly groove is seted up to the lower mould upper plate, the mold core sets up in the assembly groove, the mold core includes two at least mould core pieces, the ladder face is seted up to the both ends face of mould core piece, the lower mould upper plate corresponds the position of the ladder face of mould core piece sets up the keyway, the keyway block is connected the ladder face.

According to the utility model discloses preferred embodiment drawing die, drawing die still includes a plurality of supporting shoes, left side breach groove and right side breach groove are seted up to the lower mould upper plate, the supporting shoe sets up in left side breach groove and the right side breach groove, be used for connecting the setting and be in left side breach groove and the right side breach groove nitrogen gas kicking block.

The design idea of the application is as follows: the drawing die with the high precision and stable pressure source is used for the size of a large part of an automobile stamping part, and the design uses the nitrogen cylinder as the pressure source, so that the instability of the state of the part product caused by pressure fluctuation caused by the deviation of the machine tool pressure source and the arrangement position of the die on a machine tool in the drawing process can be effectively avoided.

Owing to adopted above technical scheme, make the utility model discloses compare in prior art, have following advantage and positive effect:

firstly, the debugging time of the die on the stamping equipment is reduced;

second, this application guarantees the stability of part, effectual enhancement part quality.

Of course, it is not necessary to implement any particular embodiment of the present invention to achieve all of the above technical effects at the same time.

Drawings

FIG. 1 is a schematic view of a lower die of the present application;

FIG. 2 is a schematic view of the nitrogen cylinder and shim plate connection of the present application.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a drawing die with high precision according to the present application includes an upper die (not shown) and a lower die, the lower die includes a lower die frame, a die core 10, a backing plate 20, a plurality of nitrogen cylinders 30 and a plurality of nitrogen top blocks 40, the lower die frame includes a lower die upper plate 51, a middle support plate 52 and a lower die lower plate 53, the lower die upper plate 51, the middle support plate 52 and the lower die lower plate 53 are sequentially connected, and the lower die upper plate 51 and the lower die lower plate 53 of the lower die frame are connected by the middle support plate 52 to form a gap, so as to facilitate installation of the nitrogen cylinders 30 and other components.

The nitrogen gas jacking block 40 is arranged on the nitrogen gas cylinder 30, the plurality of nitrogen gas cylinders 30 are arranged on the base plate 20, the base plate 20 is arranged below the lower die lower plate 53, the nitrogen gas cylinders 30 are locked on the base plate 20 in a reverse mode, the base plate 20 is locked on the bottom surface of the drawing die in a reverse mode, and the nitrogen gas cylinders 30 are filled with 1.5BAR gas to generate enough pressure; the mold core 10 is a male mold, the upper mold presses down when the mold is closed, the nitrogen top block 40 moves downwards, the nitrogen top block 40 moves upwards under the action of nitrogen pressure when the upper mold leaves, and returns to the original position, so that a stamping part is ejected out smoothly; the nitrogen cylinder 30 is connected with an air storage tank 60 through a pipeline, so that the pressure of the nitrogen cylinder 30 is ensured.

As shown in fig. 1, the lower mold upper plate 51 is provided with a fitting groove, the mold core 10 is disposed in the fitting groove, the mold core 10 comprises at least two mold core pieces, in the present embodiment, the number of the mold core pieces is three, but should not be construed as limiting the scope of the present application, as long as the number is designed according to the design requirements, two end surfaces of the die core block are provided with step surfaces (not shown), the lower die upper plate 51 is provided with a key groove 54 corresponding to the step surfaces of the die core block, the key groove 54 is clamped and connected with the stepped surface, when in assembly, the mold core block is assembled from top to bottom, the key groove 54 has the function of positioning reference, the die core block is assembled against the key groove 54 from top to bottom, the mounting accuracy of the die core block is ensured, as described above, the mold core 10 of the present application is a male mold protruding from the upper surface of the lower mold upper plate 51.

In addition, in fig. 1, the drawing die further includes a plurality of supporting blocks 70, the lower die upper plate 51 is provided with a left-side notched groove 55 and a right-side notched groove 56, the left-side notched groove 55 and the right-side notched groove 56 facilitate assembly of the die core 10, the supporting blocks 70 are disposed in the left-side notched groove 55 and the right-side notched groove 56 and are used for connecting the nitrogen top blocks 40 disposed in the left-side notched groove 55 and the right-side notched groove 56, the nitrogen top blocks 40 sometimes exist in the left-side notched groove 55 and the right-side notched groove 56 due to a design relationship, and are not supported by the through holes of the lower die upper plate 51 at this position, and the supporting blocks 70 are increased due to suspension of the nitrogen top blocks 40, so that the nitrogen top blocks 40 do not skew and deviate during a die assembly process to affect a stamping accuracy.

The design concept of the application is as follows: the drawing die with the high precision and stable pressure source is used for the size of a large part of an automobile stamping part, and the design uses the nitrogen cylinder as the pressure source, so that the instability of the state of the part product caused by pressure fluctuation caused by the deviation of the machine tool pressure source and the arrangement position of the die on a machine tool in the drawing process can be effectively avoided.

firstly, the debugging time of the die on the stamping equipment is reduced;

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A high-precision drawing die is used for drawing large castings and is characterized by comprising an upper die and a lower die, wherein the lower die comprises a lower die frame, a die core, a base plate, a plurality of nitrogen cylinders and a plurality of nitrogen jacking blocks; the nitrogen cylinder is connected with a gas storage tank through a pipeline.

2. The drawing die as claimed in claim 1, wherein the lower die upper plate is provided with a mounting groove, the die core is arranged in the mounting groove, the die core comprises at least two die core blocks, two end faces of each die core block are provided with stepped surfaces, and the lower die upper plate is provided with key grooves corresponding to the stepped surfaces of the die core blocks, and the key grooves are clamped and connected with the stepped surfaces.

3. The drawing die as claimed in claim 2, further comprising a plurality of support blocks, wherein the lower die upper plate is provided with a left side notch groove and a right side notch groove, and the support blocks are arranged in the left side notch groove and the right side notch groove and used for connecting the nitrogen top blocks arranged in the left side notch groove and the right side notch groove.