KR101294160B1 - Forming Apparatus for Reinforcement Member with closed section and Manufacturing Method of Reinforcement Member using the Forming Apparatus - Google Patents

Abstract

According to the present invention, a reinforcement having a basically closed cross-sectional structure, such as a center pillar inner reinforcement of a vehicle, can be manufactured relatively simply in a single state rather than a plurality of parts, thereby greatly reducing the equipment, time, and assembly process required for manufacturing the reinforcement. By reducing the manufacturing cost and reducing the welded portion of the reinforcement significantly, the collision performance can be improved.

Description

Forming Apparatus for Reinforcement Member with closed section and Manufacturing Method of Reinforcement Member using the Forming Apparatus}

The present invention relates to a reinforcement forming apparatus having a closed cross section and a reinforcing member manufacturing method using the same, and more particularly, to a configuration of an apparatus for forming a reinforcing member having a basically closed cross-sectional structure, such as a sender inner reinforcement of a vehicle, and such a device. It is a technique relating to the production method of the reinforcing material using.

The center pillar inner reinforcement of the vehicle has a structure that forms a closed cross section, so that it can provide sufficient rigidity in case of a collision accident. In the past, a plurality of parts are used to form a closed cross section structure as described above. After manufacturing separately, these are joined by a method such as welding to form a single center pillar inner reinforcement.

Therefore, a large number of equipment, a manufacturing process, and an assembly process are required to separately manufacture and assemble a plurality of parts forming the center filler inner reinforcing material, which increases the manufacturing cost. By joining together, there are limitations in securing the collision performance of the center pillar inner reinforcing material as many welds have a weak characteristic at the time of collision.

The present invention has been made to solve the problems described above, by making the reinforcement having a basically closed cross-sectional structure, such as the center filler inner reinforcement of the vehicle to be relatively simple to manufacture in a single state rather than a plurality of parts, Reinforcing material forming apparatus with closed section to reduce the manufacturing cost by greatly reducing the equipment, time and assembly process required for manufacturing, and to significantly improve the impact performance by greatly reducing the welded part of the reinforcing material, and The purpose is to provide a method of manufacturing a reinforcement using the same.

Reinforcing material forming apparatus having a closed section of the present invention for achieving the above object is

A lower mold having a cavity for forming a reinforcing material;

An upper mold which is installed to be movable up and down with respect to the lower mold, and presses and molds a material interposed between the lower mold and the lower mold;

An insert mold installed to be movable in a horizontal direction and a vertical direction so as to enter and exit the cavity of the lower mold from the sides of the upper mold and the lower mold, and having a variable width;

A left mold and a right mold installed to correspond to each other horizontally on both sides of the lower mold;

It is configured to include,
The insert mold is characterized in that it comprises a left and right inserts formed to be separable from both the left and right sides, and stretching means for widening or narrowing by generating a mechanical displacement between the left and right inserts.

In addition, the reinforcing material manufacturing method using the reinforcing material forming apparatus provided with the closed section of the present invention for achieving the above object,

A first step in which the upper mold enters into the cavity of the lower mold and the material is formed into a cross-sectional shape in which the upper part is opened and both ends protrude out of the cavity;

A second step of returning the upper mold to an upper side of the lower mold and inserting an insert mold into the material inside the cavity of the lower mold to pressurize the inner surface of the material to both sides;

A third step of bending both end portions projecting from the upper side of the lower mold toward the cavity from the upper side of the lower mold to the center of the cavity;

A fourth step of extracting the insert mold through a space above the material formed by elastically restoring both side ends of the bent material when the left mold and the right mold retreat from the cavity;

A fifth step of welding the both ends of the material bent toward the center of the cavity while the left mold and the right mold enter the cavity again;

And a control unit.

According to the present invention, a reinforcement having a basically closed cross-sectional structure, such as a center pillar inner reinforcement of a vehicle, can be manufactured relatively simply in a single state rather than a plurality of parts, thereby greatly reducing the equipment, time, and assembly process required for manufacturing the reinforcement. By reducing the manufacturing cost and reducing the welded portion of the reinforcement significantly, the collision performance can be improved.

1 is a perspective view showing a center filler inner reinforcing material which is a reinforcing material for a vehicle manufactured according to an embodiment of the present invention;
Figure 2 is a simplified view showing the reinforcement of Figure 1,
3 is a conceptual diagram showing an embodiment of a reinforcing material forming apparatus having a closed cross-section according to the present invention,
4 is a view for explaining the structure of the insert mold of FIG.
5 is a process chart illustrating a method of manufacturing a reinforcing material according to the present invention;
6 is a process diagram illustrating the method of manufacturing the reinforcing material of the present invention in a sectional view;
7 is a view for explaining the reason for taking out the insert mold through the upper space of the material in the present invention.

The present invention relates to an apparatus for manufacturing a vehicle reinforcement (1) as shown in Figure 1 and a method of manufacturing the same, the vehicle reinforcement (1) of Figure 1 is specifically a center filler inner reinforcement of the vehicle, Similarly, it is a matter of course that the present invention can be applied to other reinforcing materials that are formed to form a closed cross section.

Figure 2 shows a simplified reinforcement (1) in which the general characteristics of the reinforcement to which the present invention can be applied as described above is expressed, which is basically formed to have a long closed cross section, and the welding is performed as shown. It is important to note that the structure has only one side surface.

The reinforcing material forming apparatus of the embodiment of the present invention for producing the reinforcing material (1) of the configuration as described above, as shown in Figure 3 and 4, the lower mold (3) formed with a cavity for forming the reinforcing material, and the lower mold The upper mold (5) and the upper mold (5) and the lower mold (3) are installed to be movable up and down with respect to (3) and press-molded the material (p) interposed between the lower mold (3) 3) the insert mold (7) formed so as to be movable in the horizontal direction and the vertical direction so as to enter and exit the cavity of the lower mold (3) from the side of the lower mold (3), the width can be varied, and the lower mold It comprises a left mold (9) and the right mold (11) provided to correspond to the horizontal movement on both sides from the upper side of (3),
The insert mold 7 is configured to include left and right inserts formed to be separable from both left and right sides, and elastic means for widening or narrowing by generating a mechanical displacement between the left and right inserts.

For reference, Figure 3 is shown with a control box 10 for controlling the operation of the molds.

The insert mold (7) is formed long along the longitudinal direction of the reinforcing material to be processed, is installed to enter the cavity of the lower mold (3) by moving horizontally straight in the longitudinal direction;

The left mold 9 and the right mold 11 are installed to be linearly movable in a direction perpendicular to the horizontal linear movement direction of the insert mold 7.

Here, the upper mold (5), the insert mold (7), the left mold (9) and the right mold (11) are each installed to enable linear movement in a specific direction, respectively, by means such as conventional hydraulic cylinders, of course. .

In particular, the insert mold (7) as described above can be moved in a straight line horizontally along the longitudinal direction, as well as in the vertical direction, so that the installation of the insert mold 7 to be described later to take out do.

As shown in detail in FIG. 4, the left insert 13 and the right insert 15 of the insert mold 7 are separated into left and right sides along a longitudinal direction, and the expansion means are connected to the left insert 13. The left insert 13 and the right insert 15 are rotated between the return spring 17 installed to apply the elastic force in the direction in which the right insert 15 is close to each other, and the left insert 13 and the right insert 15. 15) is configured to include a rotating cam 19 installed to be spaced apart.

The rotation cam 19 is formed in an elliptical shape or the like as the center of the rotation shaft, and is configured to be widened or narrowed between the left insert 13 and the right insert 15 according to the rotation angle of the rotation shaft.

In the embodiment of the present invention manufacturing method for producing the reinforcing material (1) using the reinforcing material forming apparatus as described above, as shown in Figure 5 and 6, the upper mold (5) into the cavity of the lower mold (3) The first step (S10) and the upper mold (5) is returned to the upper side of the lower mold (3) to form a cross-sectional shape in which the material p is opened upwards and both ends are protruded out of the cavity. The second step (S20) for inserting the insert mold 7 into the inside of the material (p) in the cavity of the lower mold 3 to support the inner surface of the material (p) to both sides and the left mold (9) and the right mold 11 enters from the upper side of the lower mold 3 to the cavity from side to side, and at the first step S10, both end portions protruding to the upper side of the cavity are centered in the cavity. The third step (S30) is bent toward the left and the left mold (9) and the right mold (11) A fourth step S40 of extracting the insert mold 7 through a space above the material p formed by elastically restoring both side ends of the bent material p when retracted from the cavity; In the state where the left mold 9 and the right mold 11 enter the cavity again, a fifth step S50 of mutually welding both end portions of the material p bent toward the center of the cavity is performed. It is configured to include.

That is, the first step (S10) of processing the material (p) into a U-shaped cross section of the upper mold (5) is lowered while pressing down the material (p) supplied to the upper side of the lower mold (3). And insert the insert mold 7 into the interior of the material p to bend both side ends of the material p protruding upward of the lower mold 3 toward the center side of the cavity. After performing the second step (S20) to support the (3), the third step (S30) of primarily bending both ends of the material (p) into the left mold (9) and the right mold (11). And the insert mold through a space in which both ends of the first bent material p are elastically restored with the retreat of the left mold 9 and the right mold 11 to be formed slightly above the center of the cavity. Move (7) to the upper side to carry out the fourth step (S40) and take out the left mold (9) and the right mold (11) again. Thereby to again bend in a state where the both ends of the material (p), performing a fifth step (S50) of bonding them by welding.

In the second step (S20) the insert mold 7 is inserted into the inside of the material (p) in a narrowed state by the return spring 17, and then by the rotation of the rotation cam 19 As the width is widened, the material p inside the cavity is pressed to both sides, so that the material p can be held in close contact with both sides of the cavity.

In the fourth step (S40), the insert mold (7) is spaced above the material (p) in a state that the width is narrowed to a minimum by the rotation of the rotating cam 19 and the elastic force of the return spring (17) Is taken out through.

Of course, the insert mold (7) is moved upwards of the material (p) and then retracted in the horizontal direction again, so as not to interfere with the entry of the left mold (9) and the right mold (11), subsequent continuous work Be prepared.

Here, the insert mold (7) is taken out through the upper space of the material (p) formed by the elasticity of the material (p) and then retracted in the horizontal direction again, as illustrated in FIG. The structure of the reinforcement is to be prepared in the case where there is a part where the area of the cross section is sharply reduced or the direction of the cross section is changed so rapidly that the insert mold 7 cannot be retracted as it is in the longitudinal direction.

Therefore, in the present invention, when forming a reinforcement member having a simple structure such as a constant cross section or a cross section gradually widening along the ejection direction of the insert mold 7, the change of a rather complicated cross sectional structure as illustrated in FIG. It can also be used for the production of reinforcing materials with a change in the cross-sectional direction.

In the fifth step (S50), when the left mold 9 and the right mold 11 enters the cavity again, the left mold 9 and the right mold 11 are the material p, respectively. While passing through the bent portion of the welding equipment (w) is inserted into the welding space for allowing the welding operation is made to enter the state secured between the left mold (9) and the right mold (11).

Therefore, both ends of the material p fixed by the left mold 9 and the right mold 11 can be easily welded by the welding equipment w inserted into the welding space.

After the welding is completed as described above, the finished reinforcement (1) is taken out and returned to the state capable of loading a new material (p) to prepare for the next operation.

Vehicle reinforcement (1) produced by the manufacturing method as described above is made of a single material (p), as shown in Figure 2 is composed of a long structure that forms a closed cross-section inside the space, more specifically It has a rectangular closed cross section, one welding surface 21 is welded along the longitudinal direction, and the other three costs without forming a rectangular closed cross section with the welding surface 21, but no welding site It consists of a contact surface (23).

Therefore, welding is performed only at the welding surface 21, which is one of four surfaces constituting the reinforcing material 1, and welding for forming the reinforcing material itself is not performed at the non-contact surface 23, which is the remaining surfaces. By drastically reducing the size, the collision performance of stiffeners can be greatly improved.

One; reinforcement
3; Lower mold
5; Pictograph mold
7; Insert Mold
9; Left mold
11; Right mold
13; Left insert
15; Right insert
17; Return spring
19; Homing Cam
21; Welding surface
23; Cost interface
S10; First stage
S20; 2nd step
S30; 3rd step
S40; Step 4
S50; 5th step
p; Material

Claims (9)

A lower mold 3 having a cavity for forming a reinforcing material;
An upper mold (5) installed to be movable up and down with respect to the lower mold (3) and press-molded the material (p) interposed between the lower mold (3);
Sideways of the upper mold (5) and the lower mold (3) is installed so as to be movable in the horizontal direction and the vertical direction so as to enter and exit the cavity of the lower mold (3), it is formed to be variable in width Insert mold 7;
A left mold (9) and a right mold (11) installed correspondingly to be horizontally movable to both sides from the upper side of the lower mold (3);
It is configured to include,
The insert mold (7) comprises a left insert and a right insert formed to be separable from both the left and right sides, and an elastic means for widening or narrowing by generating a mechanical displacement between the left insert and the right insert
Reinforcing material forming apparatus having a closed end surface characterized in that. The method according to claim 1,
The insert mold (7) is formed long along the longitudinal direction of the reinforcing material to be processed, is installed to enter the cavity of the lower mold (3) by moving horizontally straight in the longitudinal direction;
The left mold (9) and the right mold (11) are respectively installed to be linearly movable in a direction perpendicular to the horizontal linear movement direction of the insert mold (7)
Reinforcing material forming apparatus having a closed end surface characterized in that. The method according to claim 2,
The left insert 13 and the right insert 15 of the insert mold 7 are separated into left and right sides along the longitudinal direction,
The expansion means,
A return spring (17) installed to apply an elastic force in a direction in which the left insert (13) and the right insert (15) are close to each other;
A rotating cam 19 installed to be spaced between the left insert 13 and the right insert 15 by being rotated between the left insert 13 and the right insert 15;
Reinforcement molding apparatus having a closed cross-section, characterized in that configured to include. In the reinforcing material manufacturing method using the reinforcing material forming apparatus of claim 3,
A first step S10 in which the upper mold 5 enters into the cavity of the lower mold 3 and the material p is formed into a cross-sectional shape in which the upper part p is opened and both side ends protrude out of the cavity;
The upper mold 5 returns to the upper side of the lower mold 3, and the insert mold 7 is inserted into the material p inside the cavity of the lower mold 3 so that A second step (S20) for pressing and supporting the inner surface to both sides;
As the left mold 9 and the right mold 11 enter left and right toward the cavity from the upper side of the lower mold 3, both end portions protruding upward from the cavity in the first step S10 are located in the cavity. A third step (S30) of bending toward the center of the;
When the left mold 9 and the right mold 11 are retracted from the cavity, the insert mold is formed through a space above the material p formed by elastically restoring both end portions of the bent material p. A fourth step S40 of taking out 7);
A fifth step (S50) of mutually welding both end portions of the material (p) bent toward the center of the cavity while the left mold (9) and the right mold (11) enter the cavity again;
Reinforcement production method using a reinforcing material forming apparatus having a closed cross section, characterized in that configured to include. The method of claim 4,
In the second step (S20) the insert mold 7 is inserted into the inside of the material (p) in a narrowed state by the return spring 17, and then by the rotation of the rotation cam 19 Pressing the material (p) inside the cavity to both sides as the width widens, so that the material (p) can be supported in close contact with both sides of the cavity
Reinforcement production method using a reinforcement forming apparatus having a closed cross-section characterized in that. The method according to claim 4,
In the fourth step (S40), the insert mold (7) is spaced above the material (p) in a state that the width is narrowed to a minimum by the rotation of the rotating cam 19 and the elastic force of the return spring (17) Withdrawn through
Reinforcement production method using a reinforcement forming apparatus having a closed cross-section characterized in that. The method of claim 4,
In the fifth step (S50), when the left mold 9 and the right mold 11 enters the cavity again, the left mold 9 and the right mold 11 are the material p, respectively. Entering into a state in which a welding space is secured between the left mold 9 and the right mold 11 so that a welding operation can be performed by inserting a welding device w into the welding part.
Reinforcement production method using a reinforcement forming apparatus having a closed cross-section characterized in that. delete delete

Images