CN210936709U - Secondary punch forming structure with negative angle automobile parts - Google Patents

Abstract

The utility model discloses a secondary stamping forming structure with negative angle auto parts, it is through being equipped with the location portion that is used for supporting the extension and the right angle portion of semi-manufactured goods piece at the lower mould to articulated have the shaping arm that supports the first kink of semi-manufactured goods piece, the shaping arm can be with the right angle portion tightly support in location portion and with the location position swing between the position of separation of location portion, the shaping arm has the first kink and the second kink assorted profiled surface with finished product piece, it is equipped with the drift to go up the mould and the relative position of shaping arm, and the compound die in-process goes up the mould and drives the drift and push down the first kink and the second kink of semi-manufactured goods piece to offset to the profiled surface with the shaping arm to with the finished product piece of semi-manufactured goods piece secondary molding for having the negative angle, promptly the auto parts with negative angle.

Description

Secondary punch forming structure with negative angle automobile parts

Technical Field

The utility model relates to a mould field, in particular to secondary stamping forming structure with negative angle auto parts.

Background

Some automobile parts made of hardware (such as aluminum alloy) have negative angles, such automobile parts are mainly formed by stamping through a stamping die, taking an automobile part 100 with a negative angle shown in fig. 1 (cross section) as an example, in the current forming mode, a sheet metal is preformed into 90 degrees through a conventional stamping die to form a semi-finished product 100 'shown in fig. 2, the semi-finished product 100' has a straight angle part 101, the end part of the horizontal section of the straight angle part 101 is provided with an extending part 102 which inclines downwards in the direction of the vertical section far away from the straight angle part 101, the upper end of the vertical section is provided with a secondary bending part to be bent which is opposite to the horizontal section up and down, and the secondary bending part to be bent comprises a first bending part 103 which extends upwards in an inclined way from the upper end of the vertical section and a second bending part 104 which extends downwards in a horizontal or slightly inclined way from the end. Then, the semi-finished product 100' is post-formed by the bridge-side forming slider structure to obtain the automobile part with a negative angle (i.e., the finished product 100) as shown in fig. 1, and the first bent portion forms a negative angle with the vertical section, and the second bent portion is substantially parallel to the vertical section. In the engineering mold, the conventional structure can affect the moving stability of the formed automobile parts in the bridge drawing process, for example, when the formed automobile parts are small or the space is small, the bridge is easy to break or deform seriously due to insufficient strength.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a secondary stamping forming structure with negative angle auto parts aims at guaranteeing the fashioned stability of auto parts.

In order to realize the above-mentioned purpose, the utility model provides a secondary stamping forming structure with negative angle auto parts, including last mould and lower mould, the lower mould is equipped with the location portion that is used for supporting the extension and the straight angle portion of semi-manufactured goods piece to it has the shaping arm of the first kink of supporting semi-manufactured goods piece to articulate, the shaping arm can be with the straight angle portion tightly support in location portion and swing between the position with location portion separation, the shaping arm has with the first kink and the second kink assorted profiled surface of finished product piece, it is equipped with the drift with the position that the shaping arm is relative to go up the mould, and the compound die in-process goes up the mould and drives the drift and pushes down the first kink and the second kink of semi-manufactured goods piece to the profiled surface that offsets with the profiled arm, thereby with semi-manufactured goods piece post forming for having the negative angle, promptly the auto parts with negative angle.

The utility model relates to a secondary stamping forming structure with negative angle automobile parts, which is hinged with a forming arm which can swing between a position part which tightly supports the right angle part of a semi-finished product part against a lower die and a position which is separated from the position part, the forming wall is provided with a forming surface which is matched with a first bending part and a second bending part of the finished product part, and a punch is arranged at the position of an upper die which is opposite to the forming arm, when in work, the semi-finished product part is firstly placed in the lower die and supported by the position part (see figure 3 and figure 6), then the forming arm is swung towards the direction of the position part until the right angle part of the semi-finished product part tightly supports against the position part (see figure 4 and figure 7), then, an external first driving mechanism drives the upper die to drive the punch to move downwards and press the first bending part and the second bending part of the semi-finished product part until the first bending part and the second bending part are turned over and deformed to be pressed against the forming surface of, thereby overmolding the green part into a finished part having a negative angle (i.e., the negative angle automobile part). And then the first driving mechanism drives the upper die to drive the punch to ascend to realize die opening, and then drives the formed part to swing outwards to leave the positioning part (see figure 9), so that the finished product part can be drawn out from the forming arm, and the secondary forming work of the product (namely the automobile part with the negative angle) is finished. The secondary punch forming structure is less affected by the size of a product and the size of a space, the moving stability of the secondary forming of the product can be ensured, and the situation that the product is broken or seriously deformed due to insufficient strength is avoided.

Drawings

FIG. 1 is a cross-sectional view of a finished part;

FIG. 2 is a cross-sectional view of a green part;

fig. 3 is a cross-sectional view of the present invention in a first state;

fig. 4 is a sectional view of the present invention in a second state;

fig. 5 is a sectional view of the third state of the present invention;

FIG. 6 is a first state top view of the lower die;

FIG. 7 is a second state top view of the lower die;

FIG. 8 is a third state top view of the lower die;

fig. 9 is a fourth state plan view of the lower mold.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indicators (such as … …, upper, lower, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indicators are only used to explain the relative position, motion, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a secondary stamping forming structure with negative angle auto parts.

In an embodiment of the present invention, as shown in fig. 1 to 9, a secondary press forming structure for automobile parts with negative angles includes an upper die and a lower die 1, wherein the lower die 1 is provided with a positioning portion 10 for supporting an extending portion 102 and a right-angled portion 101 of a semi-finished product 100', and is hinged with a forming arm 2 for supporting a first bending portion 103 of the semi-finished product 100', the forming arm 2 can swing between a position where the right-angled portion 101 is pressed against the positioning portion 10 and a position where the right-angled portion is separated from the positioning portion 10, the forming arm 2 has a forming surface 21 matched with the first bending portion 103 and the second bending portion 104 of the finished product 100, a punch 3 is provided at a position of the upper die opposite to the forming arm 2, the upper die drives the punch 3 to press the first bending portion 103 and the second bending portion 104 of the semi-finished product 100 'against the forming surface 21 of the forming arm 2 during die assembly, so as to secondary form the semi-finished product 100' with negative angles, i.e. said automotive part having a negative angle.

The punch 3 is provided with a concave surface 31 adapted to the upper portion of the molding surface 21 at a position corresponding to the first bent portion 103 of the work in process 100'.

Still include the pressure flitch 5, the pressure flitch 5 through the interlock with the drive end 4 of first actuating mechanism links to each other or links to each other with outside second actuating mechanism, and the compound die in-process, pressure flitch 5 is before drift 3 pushes down first kink 103 and second kink 104, supports extension 102 tightly in location portion 10.

It should be noted that the first driving mechanism and the second driving mechanism belong to the prior art and are parts of the stamping machine, and detailed description of specific structural principles thereof is omitted here.

And a through hole for the forming punch 3 to pass through is formed in the position of the material pressing plate 5 corresponding to the forming punch 3.

The two sides of the positioning part 10 are respectively used for supporting an extending part 102 and a right-angle part 101 of a semi-finished product piece 100', the number of the forming arms 2 and the number of the punches 3 are two, one ends of the two forming arms 2 are respectively hinged to the positions of the lower die 1 corresponding to the two sides of the positioning part 10, and the punches 3 are arranged at the positions of the upper die corresponding to the forming arms 2. Make the utility model discloses the secondary forming work of two semi-manufactured goods pieces 100' of once formability to improve production efficiency.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (5)

1. Secondary stamping forming structure with negative angle auto parts, including last mould and lower mould, its characterized in that: the lower die (1) is provided with a positioning part (10) used for supporting an extending part (102) and a right-angled part (101) of a semi-finished product piece (100 '), and is hinged with a forming arm (2) used for supporting a first bending part (103) of the semi-finished product piece (100 '), the forming arm can swing between the position where the right-angled part is tightly abutted to the positioning part and the position where the right-angled part is separated from the positioning part, the forming arm (2) is provided with a forming surface (21) matched with the first bending part (103) and a second bending part (104) of the finished product piece (100), a punch (3) is arranged at the position of the upper die opposite to the forming arm, and in the die closing process, the upper die drives the punch to press the first bending part (103) and the second bending part (104) of the semi-finished product piece (100 ') downwards to be abutted to the forming surface (21.

2. The secondary press-molding structure with a negative-angle automobile part according to claim 1, characterized in that: the punch (3) is provided with a concave surface (31) with a suitable upper part of a forming surface at a position corresponding to the first bending part (103) of the semi-finished product (100').

3. The secondary press-molding structure with a negative-angle automobile part according to claim 1, characterized in that: still including pressing flitch (5), pressing flitch (5) to link to each other or link to each other with outside second actuating mechanism through drive end (4) of interlock spare and outside first actuating mechanism, the compound die in-process, pressing flitch (5) before first kink and second kink are pushed down to the drift, tightly support the extension in location portion.

4. The secondary press-molding structure with a negative-angle automobile part according to claim 3, characterized in that: and a through hole for the forming punch (3) to pass through is formed in the position, corresponding to the forming punch (3), of the pressure plate (5).

5. The secondary press-formed structure with a negative-angle automobile part according to any one of claims 1 to 4, characterized in that: the two sides of the positioning portion (10) are respectively used for supporting an extending portion (102) and a right-angle portion (101) of a semi-finished product piece (100'), the number of the forming arms and the number of the punches are two, one ends of the two forming arms are respectively hinged to the positions, corresponding to the two sides of the positioning portion (10), of the lower die (1), and the punches (3) are arranged on the positions, corresponding to the forming arms, of the upper die.

Images