KR102270292B1 - Manufacturing method for molding car doors and other products at the same time - Google Patents

Abstract

The present invention relates to a method for manufacturing an automobile door frame molding, and more particularly, when a mold release product is simultaneously molded in a press molding process for an automobile door frame as an integral part, shearing the trimming process in multiple stages to facilitate scrap discharge It relates to a manufacturing method for simultaneously molding a release product in a receiving part inside a car door frame, characterized in
In the present invention, in a manufacturing method for simultaneously molding a release product in an inner receiving part of a car door frame, when two rows of brackets 31 to retainers 32 are simultaneously molded, in the trimming process (300, 301), By tilting the trimming mold height of section a, section b (b) and section c (c), the edge in the same direction for each section is sheared first.
The present invention not only reduces scrap by simultaneously molding and manufacturing the bracket or retainer while molding the integrated vehicle door frame, but also dramatically reduces the manufacturing cost by simultaneously manufacturing the bracket or retainer, and the arrangement of the bracket or retainer molding mold As they are arranged in the longitudinal direction, scraps are smoothly discharged in the blanking or cutter process.

Description

A manufacturing method for simultaneously molding a release product in the receiving part of a car door frame {Manufacturing method for molding car doors and other products at the same time}

The present invention relates to a method for manufacturing an automobile door frame molding, and more particularly, when a mold release product is simultaneously molded in a press molding process for an automobile door frame as an integral body, shearing the trimming process in multiple stages in order to facilitate the discharge of scrap It relates to a manufacturing method for simultaneously molding a release product in a receiving part inside a door frame of an automobile, characterized in that it is

1 is a diagram illustrating the internal configuration of a conventional automobile door.

1 , a door of a vehicle is generally formed of an outer panel assembly, an inner panel assembly, and a door trim assembly. The outer panel assembly refers to an outer panel of the door, and the inner panel assembly is located on the interior side of the vehicle. It refers to a panel that is combined with the outer panel inside the door before the door trim assembly, which is a decorative material, is combined.

In the space between the outer panel assembly and the inner panel assembly, the door glass that reciprocates up and down and opens and closes the side window is accommodated, while an operation module that reciprocates the door glass, other convenience devices, and a side beam for reinforcing the side of the door are mounted. will become

2 is a view showing the configuration of a conventional automobile door frame. In particular, the automobile door frame is composed of an upper panel, a rear panel, and an inner rail to form a vehicle window frame.

As shown in FIG. 2, a conventional car door is formed by combining and processing a plurality of separately manufactured metal parts, and in the case of an inner panel, approximately 10 or more metal parts are processed by press processing such as roll forming. They are then joined to each other by welding to form the shape.

The conventional car door manufacturing method, first, manufactures a number of parts separately through press processing such as roll forming, and then welds each part one by one by a worker or a robot. lowers the Second, welding defects may occur in the welding process of each part, and there was a problem of being vulnerable to corrosion due to long-term use of automobiles. Finally, a car door in which a plurality of parts are combined has a disadvantage in that it is vulnerable to a collision by an external force.

In recent years, large-scale press and press forming technology has been developed, and as shown in FIG. 4 , a technology for integrally molding an automobile door frame is spreading.

When the vehicle door frame is integrally molded as described above, a large area of scrap is generated in the central portion of the door frame.

The scrap generated after blanking or cutting is of good quality and has enough area to produce other products.

Accordingly, when the automobile door frame is integrally molded, there is a need for a technology for minimizing scrap by simultaneously molding the bracket or retainer product.

The present invention is to improve the problems of the known technology of KR No. 10-1992580 (registration date: 2019.06.18) registered by the earlier application of the present applicant. That is, when the vertical arrangement of the brackets or retainers is increased to two or more rows, it is difficult to discharge scrap.

1. KR Special 1998-031331, 'Method for manufacturing inner panel of vehicle door', publication date: 1998.07.25. 2. KR 10-1388474, 'Vehicle door frame and manufacturing method thereof', Registration date: 2014.04.17. 3. KR 10-1619273, 'Automobile door structure', date of registration: 2016.05.02. 4. KR 10-2016-0126178, 'Riding T-Link Other Chair Links Riding T-Link Other Chair Links', Release Date: 2016.11.02.

Invented to solve the above problem, the present invention provides a multi-stage or inclined trimming mold with time intervals in order to facilitate the discharge of scrap from the door frame blanking or cutter process when a mold release product is simultaneously molded in a door frame of a car. It is an object of the present invention to disclose a manufacturing method for simultaneously molding a release product in an accommodating part inside an automobile door frame, characterized in that it includes a shearing process.

In order to achieve the above object, in the present invention, in a manufacturing method for simultaneously molding a release product in an inner receiving part of a car door frame, when two rows of brackets 31 to 32 are simultaneously molded, the third In the process (300, 301), the trimming mold height of section a (a), section b (b) and section c (c) is inclined, so that the edge in the same direction for each section is sheared first. An object of the present invention is to disclose a manufacturing method for simultaneously molding a release product in a receiving part inside a door frame.

In addition, in the present invention, in the manufacturing method of simultaneously molding the release product in the accommodating part of the vehicle door frame, when the brackets 31 to the retainers 32 in two rows are simultaneously molded, the third step (300, In 301), the release product is simultaneously molded into the accommodating part inside the car door frame, characterized in that the b section (b) is first sheared, and then the a section (a) and the c section (c) are sheared in multiple stages. To disclose a manufacturing method.

In addition, in the present invention, in the manufacturing method of simultaneously molding the release product in the accommodating part of the vehicle door frame, when the brackets 31 to the retainers 32 in two rows are simultaneously molded, the third step (300, In 301), section a (a) and section c (c) are first sheared, and then, section b (b) is sheared in multiple stages, wherein the mold release product is simultaneously molded into the receiving part of the car door frame. To disclose a manufacturing method.

Due to the above solution, the present invention has the following effects.

First, according to the present invention, scrap can be reduced by simultaneously molding and manufacturing small automobile parts while molding an integrated automobile door frame, and manufacturing cost can be dramatically reduced by simultaneously manufacturing small automobile parts.

Second, as the arrangement of the mold for molding small automobile parts of the present invention is arranged in the longitudinal direction, scrap is smoothly discharged from the blanking or cutter process.

Third, by integrally molding the automobile door frame, the rigidity against impact is increased, the weight of the product is greatly reduced compared to the conventional technique of forming a plurality of parts by welding, and the factor of poor welding has been radically removed.

Fourth, due to the present invention, it is possible to simultaneously manufacture up to 8 parts for the front door and up to 12 parts for small automobiles for the rear door.

1 is an internal configuration diagram of a vehicle door.
2 is a block diagram of a conventional automobile door frame.
3 is a manufacturing process of a preferred embodiment of the present invention.
4 is a perspective view of a product of the integrated front door (A), the rear door (B), and brackets or retainers (31, 32) as a preferred embodiment of the present invention.
5 is a plan view (A) of a first-row bracket or retainer mold in the rear door frame and a plan view (B) of a second-row bracket or retainer mold in the rear door frame according to a preferred embodiment of the present invention.
6 is a plan view of the rear door frame cut process product
7 is a product plan view (A) and cross-sectional view (B) of the rear door frame drawing process.
8 is a product plan view of a rear door frame trim process.
9 is a product plan view of the rear door frame flanging process.
10 is a product plan view of a rear door frame separator process.
11 is a product photograph for each process of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are given to the same or similar elements throughout the specification.

In addition, since the color, size, and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the bars shown in the drawings. In order to clearly express various parts and regions in the drawings, the thickness is enlarged. And in the drawings, the thickness of some parts and regions is exaggerated for convenience of description.

The present invention relates to a method for manufacturing an automobile door frame molding, and more particularly, when a mold release product is simultaneously molded in a press molding process for an automobile door frame as an integral body, shearing the trimming process in multiple stages in order to facilitate the discharge of scrap It relates to a manufacturing method for simultaneously molding a release product in a receiving part inside a door frame of an automobile, characterized in that it is

The present invention seeks to improve the problems of the known technology of KR No. 10-1992580 'a mold for molding a car door frame and other products at the same time and a manufacturing method thereof' (registration date: 2019.06.18) registered by the previous application of the present applicant. That is, when the vertical arrangement of the brackets or retainers is increased to two or more rows, it is difficult to discharge scrap.

Accordingly, the present invention provides a manufacturing method for integrally molding the automobile door frame (10, 20), comprising: a first step (100, 101) of blanking or cutting; after the first process, second processes 200 and 201 of the drawing process; a third process (300, 301) including a trimming process and a piercing process after the second process; After the third process, a fourth process (400, 401) including a flanging process, a piercing process, and a restriking process; After the fourth process, a fifth process ( 500 , 501 ) including a separator process and a piercing process; includes a manufacturing method including, but a detailed description is provided in KR 10-1992580 'A car door frame and other products at the same time Mold and its manufacturing method' (registration date: 2019.06.18), the present invention intends to disclose mainly the technology added to the content of the previous application.

The present invention was devised to solve the problem that a lot of scrap is generated when a car door frame is integrally molded and manufactured, and in particular, in the case of a car door frame, scrap occurs over a large area.

Therefore, in order to solve this problem, a technology for simultaneously molding a molded product in a molding process of an integrated automobile door frame has been disclosed, and the product is also produced by applying it to actual mass production products.

However, when the brackets 31 to the retainers 32 in two rows are molded in order to simultaneously mold more release products, there is a problem in that the scrap is not rapidly discharged.

5 is a plan view (A) of a first-row bracket or retainer mold in the rear door frame and a plan view (B) of a second-row bracket or retainer mold in the rear door frame according to a preferred embodiment of the present invention.

As shown in FIG. 5A , scrap discharge was easy in a state in which the brackets or retainers were vertically arranged in one row, but there was a difficulty in discharging scrap in a state in which the brackets or retainers were vertically arranged in two rows as in FIG. 5B .

In particular, there were many scrap discharge defects in section b (b) where shear resistance was generated in the shape of a bracket or retainer.

In order to solve the above problem, the present applicant intends to disclose three methods.

First, in the trimming process, section b (b) is first sheared, and a multi-stage shearing method of shearing section a (a) and section c (c) will be disclosed.

Second, by inclining the height of the trimming mold for each section, we want to start a technique in which the same one direction is sheared first.

Third, in the trimming process, section a (a) and section c (c) are first sheared, and then section b (b) is sheared.

The present invention is characterized in that a mold capable of simultaneously molding a bracket or a retainer is disposed in the center of the door frame. Molding using a press is preferably formed in a symmetrical structure around the press center, and the cavity shape and molding depth are determined so that the same molding resistance is formed in consideration of the left and right molding resistance.

Therefore, rather than disposing the mold of the small automobile part outside the door frame, it is advantageous to the molding resistance and the symmetric molding resistance to arrange the mold of the small automobile part rather than the inside of the center of the door frame.

The small automobile parts of the present invention include brackets 31, retainers 32 and links that can be molded using a plate material.

It is preferable that the mold for molding the small automobile parts be located inside the center of the integrated door frame, but the position and arrangement of the mold are very important so as not to generate molding resistance or errors in the molding process of the integrated door frame.

The present applicant attempted a method of simultaneously molding a number of small automobile parts for a front door and a rear door by trial and error method.

In the present invention, when arranging a plurality of molds for molding the brackets 31 to the retainers 32 inside the center of the car door frame, the mold arrangement of the brackets 31 to the retainers 32 is It is arranged symmetrically with respect to the center of the center, and it is characterized in that it is arranged in the vertical direction with respect to the inner rail in the receiving part inside the door frame.

The present applicant tested the discharge of scrap, moldability, and molding defect rate by changing the mold positions of a number of brackets 31 to retainers 32 for the front door and the rear door by trial and error method. As a result, arranging the forming resistance around the press center was advantageous for formability and scrap discharge.

When the bracket 31 to retainer 32 molds are arranged in the horizontal direction, another scrap is generated between each small automobile mold, and the scrap generated in the space is not easily discharged and remains in the mold. there was

Accordingly, in the present invention, as shown in FIGS. 5 to 10 , the mold arrangement of the brackets 31 to the retainers 32 is symmetrically arranged around the press center, and the inner receiving portion of the door frame inner This is because it is advantageous for press molding to be arranged in the longitudinal direction with respect to the rail. In particular, as shown in FIG. 6 , when arranging in the vertical direction, the scrap was easily discharged in one form.

3 is a manufacturing process of a preferred embodiment of the present invention, and FIG. 5 is a plan view of the rear door frame and the brackets 31 to the retainers 32 of the preferred embodiment of the present invention.

In the present invention, in a manufacturing method for integrally molding automobile door frames (10, 20), a plate of a raw material of ferrous or non-ferrous metal required for manufacturing the automobile door frame is pressed by a press mold to the edge of the automobile door frame (10, 20). A first process (100, 101) of blanking or cutter shearing at a predetermined interval with: After the first process, the door frames (10, 20) and brackets (31) to retainers (32) are desired a second process (200, 201) of the drawing process of forming a furnace; After the second process, a third process (300, 301) including a trimming process of shearing the edge of the door frame and the outer edge of the brackets 31 to retainers 32, and a piercing process of shearing a part of the center line (300, 301) and; After the third process, a flanging process for smoothing the end of the outer edge of the door frame and the brackets 31 to retainers 32, a piercing process for making a hole in a part of the door frame, and the drawing process are finally completed. a fourth process (400, 401) including a rewriting process to correct; After the fourth process, a separator process of separating the symmetrically formed door frame around the center, and removing the link part 35 connecting the door frame and the brackets 31 to the retainers 32, and the door frame and the bracket A fifth process (500, 501) including a piercing process of punching a hole in the side portion of the stream (31) to the retainer class (32); characterized in that it includes.

8 is a plan view of a product of a trim process.

The third process (300, 301) is a trimming process of shearing and removing unnecessary parts from the edge of the door frame and the outer edge of the brackets (31) to retainers (32) after the drawing process, and piercing for shearing a part of the center line includes the process.

The piercing process is to reduce the forming resistance of the subsequent process by shearing a part that affects the forming resistance around the center line.

The trimming and piercing process includes a piercing process of shearing a part around a center line, and a press of about 400 tons is used for a plate material having a thickness of about 1 mm.

In Fig. 5B, section a (a) defines the area between the door frame and the first row release product edge area, section b (b) defines the area between the release product, and section c (c) defines the area between the second row release product and the door frame to be defined as

When two rows of molded release products were simultaneously molded inside the door frame, there was a problem in that the scrap in the area b section (b) was not discharged due to the shape resistance of the brackets 31 to the retainers 32 .

In addition, depending on how the scrap of section b (b) is processed, bending or deformation occurred in the link part 35 .

When two rows of brackets 31 or retainers 32 are simultaneously molded, the height of the trimming mold for each section is inclined so that the edge in the same direction for each section is sheared first, and gradually shears to the entire section. would like to start

That is, when two rows of brackets 31 to 32 are simultaneously molded, in the third process 300 and 301, section a (a), section b (b) and section c (c) are By tilting the trimming mold height, the edge in the same direction for each section is sheared first.

In this method, scrap was discharged most easily, and deformation of the link part 35 was small.

Next, in order to facilitate the discharge of scrap of section b (b) and to eliminate deformation of the link part 35, section b (b) is first sheared during the trimming process, section a (a) and section c (c) It is intended to disclose a method of shearing in two steps of shearing.

Next, in the reverse order of the first method, in the trimming process, section a (a) and section c (c) are first sheared, and then section b (b) is sheared.

11 is a product photograph for each process of the present invention.

The brackets 31 to the retainers 32 of the present invention are characterized in that they are connected to the door frames 10 and 20 through the link portion 35 until the second to fourth steps.

The reason for providing the link part 35 is to connect the vehicle door frame and the brackets 31 to the retainers 32 so that they are not separated when moving for each process.

In general, a robot is used to hold the molded product for each process and turn it 180 degrees to move to the next process.

At this time, if the door frame and the brackets 31 to the retainers 32 are separated, the arm of the robot to be gripped must be adjusted, and it is difficult to place the material in the correct position in the mold for each process.

Therefore, it is advantageous to form the brackets 31 to the retainers 32 connected to the door frame by the link part 35 until the separator process.

In the present invention, the brackets 31 to the retainers 32 each include molds of different products.

10: front door frame,
20: rear door frame,
31: Bracket, 32: Retainer,
35: link unit;
a: section a, b: section b, c: section c.

Claims (3)

A first process (100, 101) of blanking or cutter shearing at a predetermined distance from the edge of the vehicle door frame (10, 20); a second process (200, 201) of drawing the door frames (10, 20) and brackets (31) to retainers (32) after the first process; a third process (300, 301) including a trimming process of shearing the edge of the door frame and the brackets (31) to retainers (32) after the second process, and a piercing process; a fourth process (400, 401) including a flanging process, a piercing process, and a restriking process of the door frame and brackets 31 to retainers 32 after the third process; After the fourth process, a fifth process (500, 501) including a separator process of separating the door frame and removing the link part 35 and a piercing process; including, but the brackets 31 to retainers (32) relates to a manufacturing method for simultaneously molding a release product in an inner accommodating part of a car door frame, characterized in that it is connected to the door frames 10 and 20 by the link part 35 until the second to fourth processes. in,
When two rows of brackets 31 to retainers 32 are simultaneously molded,
In the third process (300, 301),
A release product in the inner receiving part of a car door frame, characterized in that the edge of the trimming mold of section a (a), section b (b) and section c (c) is inclined to shear the edge in the same direction for each section A manufacturing method for simultaneous molding.
A first process (100, 101) of blanking or cutter shearing at a predetermined distance from the edge of the vehicle door frame (10, 20); a second process (200, 201) of drawing the door frames (10, 20) and brackets (31) to retainers (32) after the first process; a third process (300, 301) including a trimming process of shearing the edge of the door frame and the brackets (31) to retainers (32) after the second process, and a piercing process; a fourth process (400, 401) including a flanging process, a piercing process, and a restriking process of the door frame and brackets 31 to retainers 32 after the third process; After the fourth process, a fifth process (500, 501) including a separator process of separating the door frame and removing the link part 35 and a piercing process; including, but the brackets 31 to retainers (32) relates to a manufacturing method for simultaneously molding a release product in an inner accommodating part of a car door frame, characterized in that it is connected to the door frames 10 and 20 by the link part 35 until the second to fourth processes. in,
When two rows of brackets 31 to retainers 32 are simultaneously molded,
In the third process (300, 301),
Shear the b section (b) first,
Thereafter, a manufacturing method for simultaneously molding a release product in an accommodating part inside a car door frame, characterized in that the a section (a) and the section c (c) are sheared in multi-stage shearing.
A first process (100, 101) of blanking or cutter shearing at a predetermined distance from the edge of the vehicle door frame (10, 20); a second process (200, 201) of drawing the door frames (10, 20) and brackets (31) to retainers (32) after the first process; a third process (300, 301) including a trimming process of shearing the edge of the door frame and the brackets (31) to retainers (32) after the second process, and a piercing process; a fourth process (400, 401) including a flanging process, a piercing process, and a restriking process of the door frame and brackets 31 to retainers 32 after the third process; After the fourth process, a fifth process (500, 501) including a separator process of separating the door frame and removing the link part 35 and a piercing process; including, but the brackets 31 to retainers (32) relates to a manufacturing method for simultaneously molding a release product in an inner accommodating part of a car door frame, characterized in that it is connected to the door frames 10 and 20 by the link part 35 until the second to fourth processes. in,
When two rows of brackets 31 to retainers 32 are simultaneously molded,
In the third process (300, 301),
Shear section a (a) and section c (c) first,
Thereafter, a manufacturing method for simultaneously molding a release product in an inner receiving part of a car door frame, characterized in that the b-section (b) is sheared in multiple stages.

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