CN216065031U

CN216065031U - Front door outer plate material pressing, flanging and returning structure

Info

Publication number: CN216065031U
Application number: CN202121653737.5U
Authority: CN
Inventors: 刘尚; 董向坤; 徐伟; 闫佳奇; 贾晓峰; 王达鹏; 李刚; 闫彦; 张荣学; 陈长青
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-03-18
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a front door outer plate material pressing, flanging and returning structure which comprises a flanging lower material pressing mechanism, a nitrogen cylinder, a limiting cover plate, a positioning plate and a guide plate, wherein the flanging lower material pressing mechanism is arranged on the front door outer plate; the flanging lower pressing mechanism consists of a lower pressing body, a flanging lower pressing insert and a scraper, is arranged below the flanging profile, can move downwards along with flanging lower pressing when a lower pressing driving rod drives downwards, and clamps a working procedure piece for molding; the upper end of the lower material pressing driving rod is fixed with the flanging insert; a sleeve is arranged outside the nitrogen cylinder and is in sliding fit with the lower pressing body; the scraper is arranged above the sleeve and is matched with the flanging lower pressing insert. The utility model can improve the sufficiency of part deformation in the flanging process, reduce the resilience and improve the size and surface condition of the flanged part; and a closed design and a brand-new scraper structure are adopted in the flanging material returning structure, so that the problem of flour product defects caused by no material returning or conventional material returning is avoided.

Description

Front door outer plate material pressing, flanging and returning structure

Technical Field

The utility model belongs to the technical field of cold stamping, particularly relates to a material pressing, flanging and returning structure, and particularly relates to a side flanging and returning structure of an A column of a front door outer plate, which is suitable for a flanging die of a vehicle door outer plate.

Background

In the stamping process of a front door outer plate of a passenger car, a die assembly structure is generally adopted, and the overall size of the car door is gradually increased, so that the size of a die is limited after die assembly, and the die space in the middle of double parts in a flanging process is limited; the flanging/returning of the parts is smoothly completed, and the size and the quality of the molded surface of the parts after the flanging are ensured.

In the flanging process stamping production process, the die is matched with a flanging punch-die to flange the surface of an original plane or a part close to the plane into a shape with a certain included angle. In the forming process, the metal material is subjected to plastic deformation at the fillet position of the female die, and the shape conforming to the shape of the male die is formed. When the angle of the part after flanging is close to 90 degrees, the part is very likely to be buckled with the male die, after stamping is finished, the part is not easy to take down by the part taking device, or the friction force between the flanged molded surface and the male die is large in the part taking process, and the part is deformed in the grabbing process. In the conventional flanging and returning device, new flour product defects are generated at the returning and grabbing positions generally, parts can be scrapped in batches due to the defects of size rebound and poor flour products, and a large amount of manpower and equipment resources are needed for solving the problem and confirming.

Disclosure of Invention

The utility model aims to provide a front door outer plate material pressing, flanging and returning structure, which aims to solve the problems of front door outer plate resilience and poor surface quality when the front door outer plate is flanged.

The purpose of the utility model is realized by the following technical scheme:

a front door outer plate material pressing, flanging and returning structure is positioned between two flanging male dies and comprises a flanging lower material pressing mechanism, a nitrogen cylinder 5, a limiting cover plate 6, a positioning plate 7 and a guide plate 8;

the flanging lower pressing mechanism consists of a lower pressing body 1, a flanging lower pressing insert 2 and a scraper 3, is arranged below the flanging profile, can move downwards along with flanging lower pressing when a lower pressing driving rod 4 drives downwards, and a working procedure piece is clamped and molded by the flanging insert 10 and the flanging lower pressing insert 2; the upper end of the lower material pressing driving rod 4 is fixed with the flanging insert 10;

a sleeve is arranged outside the nitrogen cylinder 5 and is in sliding fit with the lower pressing body 1; the scraper 3 is arranged above the sleeve and matched with the flanging lower pressing insert 2.

Further, the sleeve is fixed to the nitrogen cylinder 5 by screws.

Further, the material scraper 3 is tightly attached to the side wall of the reference of the flanging male die 9, and the opening gap of the flanging is consistent with other positions at the upper part of the material scraper 3, so that the flanged parts can be scraped from the lower die body.

Furthermore, the limiting cover plate 6 is arranged below the flanging lower pressing insert 2, is connected with the lower pressing body 1 through a screw and is used for controlling the stroke of the nitrogen cylinder 5.

Furthermore, the positioning plates 7 are uniformly arranged on the periphery of the lower die body, are used for rough positioning of the flanging, and are connected with the lower die body or the lower die insert through screws.

Further, the guide plate 8 is arranged on the side portion of the lower pressing body 1, is connected with the lower pressing body 1 through a screw, and is in sliding fit with the male die and the lower die holder.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is improved on the basis of the conventional flanging, and adopts a lower pressing structure in the flanging process, so that the structure can improve the deformation sufficiency of parts in the flanging process, reduce the resilience and improve the size and surface product state of the flanged parts; and a closed design and a brand-new scraper structure are adopted in the flanging material returning structure, so that the problem of flour product defects caused by no material returning or conventional material returning is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the position relationship between a lower pressing structure and a flanging male die;

FIG. 2 is a schematic view of the front door outer plate material pressing, flanging and material returning structure;

FIG. 3 is a schematic structural view of a flanging and swaging mechanism;

FIG. 4 is a schematic view of a flanging and pressing action;

FIG. 5 shows a view of the scraper;

fig. 6 a-6 c are schematic diagrams of the structure limiting cover plate of the scraper;

FIGS. 7a to 7c are schematic views of the lower part of the scraper being lifted;

FIGS. 8a to 8d show the scraper and the turnup down ram block in combination;

fig. 9a-9d illustrate a press body construction.

In the figure, 1, a lower pressing body 2, a flanging lower pressing insert 3, a scraper 4, a lower pressing driving rod 5, a nitrogen cylinder 6, a limiting cover plate 7, a positioning plate 8, a guide plate 9, a flanging male die 10 and a flanging insert are arranged.

Detailed Description

The utility model is further illustrated by the following examples:

the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in figure 1, the front door outer plate material pressing, flanging and returning structure is integrally arranged at the lower die part and positioned between two flanging male dies.

As shown in fig. 2-3, the front door outer plate material pressing, flanging and returning structure of the utility model comprises a flanging and material pressing mechanism, a nitrogen cylinder 5, a limiting cover plate 6, a positioning plate 7 and a guide plate 8;

the flanging lower pressing mechanism is composed of a lower pressing body 1, a flanging lower pressing insert 2 and a scraper 3, the flanging lower pressing mechanism is arranged below the flanging profile, when a lower pressing driving rod 4 is driven downwards, the flanging lower pressing mechanism moves downwards along with the flanging lower pressing, and the flanging insert 10 and the flanging lower pressing insert 2 clamp a process part for molding.

A sleeve is arranged outside the nitrogen cylinder 5; the sleeve is fixed with the nitrogen cylinder 5 through a screw, the sleeve is in sliding fit with the lower pressing body 1, and the stroke is controlled by the limiting cover plate 6, so that collision caused after the stroke exceeds the driving stroke of the nitrogen cylinder 5 is avoided; the limiting cover plate 6 is arranged below the flanging lower pressing insert 2 and is connected with the lower pressing body 1 through a screw.

The upper end of the lower pressing driving rod 4 is fixed with the flanging insert 10. The flanging lower pressing insert 2 always gives a force to the working piece from the lower side of the flanging insert 10 in the flanging process, so that the stress state of the flanging lower pressing during forming is changed, and the forming is facilitated.

The scraper 3 is arranged above the sleeve and matched with the flanging lower pressing insert 2, the scraper is tightly attached to the side wall of the reference of the flanging male die 9, and the opening gap of the flanging is consistent with other positions on the upper part of the scraper 3. After the flanging, the part can be wrapped on the die, and the scraper 3 can scrape the part from the lower die body, so that the part can be taken conveniently.

The positioning plate 7 is uniformly arranged on the periphery of the lower die body, is connected with the lower die body or the lower die insert through screws and is used for rough positioning of flanging (semi-finished product), and the position of the positioning plate is not fixed and can play a role in positioning. The guide plate 8 is arranged on the side part of the lower pressing body 1, is connected with the lower pressing body 1 through a screw, and is in sliding fit with the male die and the lower die holder.

As shown in fig. 4, when the upper die moves downwards, the upper die flanging insert drives the flanging lower pressing insert 2 and the lower pressing body 1 to move downwards, and the lower pressing driving rod 4 moves downwards to drive the scraper 3; at this time, the nitrogen cylinder 5 at the bottom is pressurized, and the flanging press insert 2 applies a reverse force to the flanging insert 10 and the working piece according to hooke's law F ═ kX. Along with the increase of the blank holder force, the friction force f in the flowing direction of the flange blank 10 is increased along with the increase of the blank holder force, and the flange blank is more beneficial to forming in the process due to the stress state. In addition, the conventional flanging surface product has the defects that pits and waves appear on the surface A after flanging, and after flanging and pressing are provided, due to the change of the stress state, the y-direction tensile stress formed on the surface of the part inhibits the defect. When the stroke of the press reaches the bottom dead center, the flanging of the part is completed, and the profile after flanging is wrapped on the datum of the flanging male die 9. Thereafter, the lower ram 1 and the scraper 3 start the return stroke with the upper die and the lower ram 4 lifted. When the lower material pressing body 1 is in place, the material scraping device 3 is not in contact with the part, the upper die continues to return, the lower material pressing driving rod 4 pressed on the material scraping device 3 is lifted, the material scraping device 3 continues to ascend and is in place after being lifted by 3-5mm after being contacted with the part, and material returning is finished. The scraper 3 is tightly attached to the side wall of the terrace die reference, and the opening gap of the flanging is consistent with other positions at the upper part of the scraper 3, so that the flanging upwarping size and poor flour quality are avoided in the lifting process of the scraper 3.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The utility model provides a qianmen planking material pressing turn-ups and material returned structure which characterized in that: the device is positioned between the two flanging male dies and comprises a flanging lower pressing mechanism, a nitrogen cylinder (5), a limiting cover plate (6), a positioning plate (7) and a guide plate (8);

the flanging lower pressing mechanism consists of a lower pressing body (1), a flanging lower pressing insert (2) and a scraper (3), is arranged below the flanging profile, can move downwards along with flanging lower pressing when a lower pressing driving rod (4) is driven downwards, and a working procedure piece is clamped by the flanging insert (10) and the flanging lower pressing insert (2) for molding; the upper end of the lower pressing driving rod (4) is fixed with the flanging insert (10);

a sleeve is arranged outside the nitrogen cylinder (5), and the sleeve is in sliding fit with the lower pressing body (1); the scraper (3) is arranged above the sleeve and matched with the flanging lower pressing insert (2).

2. The front door outer panel material pressing, flanging and returning structure of claim 1 is characterized in that: the sleeve is fixed with the nitrogen cylinder (5) through a screw.

3. The front door outer panel material pressing, flanging and returning structure of claim 1 is characterized in that: the scraper (3) is tightly attached to the side wall of the reference of the flanging male die (9), and the opening gap of the flanging is consistent with other positions at the upper part of the scraper (3) and used for scraping the flanged parts from the lower die body.

4. The front door outer panel material pressing, flanging and returning structure of claim 1 is characterized in that: the limiting cover plate (6) is arranged below the flanging lower pressing insert (2), is connected with the lower pressing body (1) through a screw and is used for controlling the stroke of the nitrogen cylinder (5).

5. The front door outer panel material pressing, flanging and returning structure of claim 1 is characterized in that: the positioning plates (7) are uniformly arranged on the periphery of the lower die body, are used for rough positioning of the flanging and are connected with the lower die body or the lower die insert through screws.

6. The front door outer panel material pressing, flanging and returning structure of claim 1 is characterized in that: the guide plate (8) is arranged on the side part of the lower pressing body (1), is connected with the lower pressing body (1) through a screw and is in sliding fit with the male die and the lower die holder.