CN217617271U - Cold stamping forming die structure - Google Patents

Abstract

The utility model provides a cold stamping forming die structure, which comprises a pressing core, a pressing core insert and a lower die datum die; the material pressing core insert is arranged on a punching surface of the material pressing core, the lower die reference die is arranged right below the material pressing core, and the material pressing core insert can move towards the lower die reference die along with the material pressing core; an insert chamfer consistent with the punched part chamfer is arranged on the punching surface of the material pressing core insert, and a standard die chamfer consistent with the punched part chamfer is arranged on the forming surface of the lower die standard die; before and after the pressing core insert presses and punches a part to be molded along with the pressing core, the insert chamfer and the standard die chamfer are always attached; the utility model provides a scheme can guarantee before the shaping of punching press part back, the R angle of punching press part is laminated with lower mould benchmark mould all the time for the R angle of punching press part can not warp in the course of working, and A face whetstone can the line, and the punching press part can not produce and warp, can not form appearance defect after the paint yet, has promoted customer perception quality.

Description

Cold stamping forming die structure

Technical Field

The utility model belongs to the technical field of cold stamping forming die structure, concretely relates to cold stamping forming die structure.

Background

In the production process of the automobile stamping part, the material pressing surface does not press the R angle (namely chamfer angle) of the stamping part in the forming process of flanging or shaping, and the R angle of the stamping part cannot be attached to the R angle of the reference die; moreover, after the flanging or shaping work is finished, the R angle of the stamped part is taken up in the return stroke process of the flanging or shaping cutter block, the R angle of the stamped part is warped after the part is formed due to the two reasons, the A surface oilstone is not connected, the part is deformed, and after painting, a deformed appearance defect is formed to influence the perception of a client.

The conventional methods for solving the problem comprise:

1. the design value of the R angle of the part is reduced as much as possible, the R angle of the reference die is reduced along with the R angle, and the flanging or shaping material pressing core presses the edge of the part as much as possible to ensure that the edge of the R angle is pressed as much as possible before shaping, and the R angle is not easy to be brought up by the flanging or shaping cutter block after shaping;

2. reducing the clearance between the flanging or shaping cutter block and the pressing core, and adopting the principle as the point 1;

3. the width and the grinding rate of a material pressing part are improved, the part is enabled to be attached to a reference die as far as possible when the part is molded to the bottom, and the R angle is not easy to be brought up by a flanging or a shaping cutter block after molding;

the above 3 methods cannot completely solve the problem of R-corner warpage of the molded part.

Based on the technical problems of the stamping parts in the production process, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.

Disclosure of Invention

The utility model aims at the weak point that exists among the above-mentioned technique, provide a cold stamping forming mould structure, aim at solving current stamping workpiece in process of production, the problem of stamping part R angle perk.

The utility model provides a cold stamping forming die structure, which comprises a pressing core, a pressing core insert and a lower die datum die; the material pressing core insert is arranged on the stamping surface of the material pressing core, the lower die reference die is arranged right below the material pressing core, and the material pressing core insert can move towards the lower die reference die along with the material pressing core; an insert chamfer consistent with the punched part chamfer is arranged on the punching surface of the material pressing core insert, and a standard die chamfer consistent with the punched part chamfer is arranged on the forming surface of the lower die standard die; before and after the pressing core insert is pressed down to punch a part to be molded along with the pressing core, the insert chamfer and the standard die chamfer are always attached.

Furthermore, the die structure also comprises a shaping cutter block, the shaping cutter block is movably arranged on the side edges of the material pressing core and the lower die reference die, and the shaping cutter block is used for flanging or shaping the stamped part; in the process of flanging or shaping the stamped part by the shaping cutter block, the material pressing core insert always presses the stamped part through the insert chamfer.

Furthermore, the material pressing core insert is arranged on the side edge of the material pressing core close to the shaping cutter block, and the standard die chamfer is arranged on the side edge of the lower die standard die close to the shaping cutter block; and in the process of flanging or shaping the stamped part by the shaping cutter block, the lower die reference die always presses the stamped part through the quasi-die chamfer.

Furthermore, the pressing core insert is embedded in the stamping surface of the bottom surface of the pressing core and can be detached; the bottom of the material pressing core insert can be provided with a gasket, and the gasket is used for processing to form an insert chamfer.

Further, the stamping part is clamped between the insert chamfer and the quasi-die chamfer in the forming process, and the insert chamfer and the quasi-die chamfer are respectively contacted and attached with the chamfer of the stamping part.

Further, the chamfer of inserting and the chamfer of the quasi-mould are mutually arc-shaped angles which can be attached.

Furthermore, the cold stamping forming die structure is an automobile cold stamping forming die structure, and the automobile cold stamping forming die structure is used for solving the problem that the A-surface oilstone is not connected in the module overturning process.

The utility model provides a cold stamping forming die structure has following technological effect:

firstly, the utility model provides a cold stamping forming die structure can guarantee that the R angle of punching press part is laminated with lower mould benchmark mould all the time before the punching press part is formed, makes the R angle of punching press part can not warp in the course of working, and A face whetstone can be the line, and punching press part can not produce the deformation, can not form appearance defect after the paint yet, has promoted customer perception quality;

second, the utility model provides a cold stamping forming mould structure presses the material position to adopt the formula structure of inserting, after long-time production wearing and tearing, perhaps abnormal conditions damages the back, can directly grind and close through inserting the bottom at pressing the material core, reprocess, reduces and maintains when the maintenance, reduces production maintenance cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a perspective view of the structure of a cold stamping and forming mold of the present invention;

fig. 2 is a front view of the structure of the cold stamping and forming mold of the present invention.

In the figure: 1-pressing core; 2, pressing a material core insert; 3, shaping a cutter block; 4, lower die reference die; 5, chamfering the insert; 6-chamfering the standard die.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to fig. 2, the utility model provides a cold stamping forming die structure, which can solve the problem that the A-surface oilstone in the turning process is not connected; the die structure comprises a pressing core 1, a pressing core insert 2 and a lower die datum mould 4; the material pressing core insert 2 is arranged on the stamping surface of the material pressing core 1, the lower die reference die 4 is arranged right below the material pressing core 1, and the material pressing core insert 2 can move towards the lower die reference die 4 along with the material pressing core 1; specifically, an insert chamfer 5 consistent with a chamfer of a stamping part is arranged on the stamping surface of the pressing core insert 2, and the insert chamfer 5 is consistent with the chamfer (namely an R angle) of the stamping part; a standard die chamfer 6 consistent with the chamfer of the stamping part is arranged on the molding surface of the lower die standard die 4, and the standard die chamfer 6 is consistent with the chamfer (namely an R angle) of the stamping part; specifically, before and after the pressing core insert 2 presses the stamping part to be formed along with the pressing core 1, the insert chamfer 5 and the standard die chamfer 6 are always attached, so that the problem of warping of an R angle after the stamping part is formed is effectively solved, the phenomenon that an A surface oilstone of a turnover process is not connected is avoided, and the deformation appearance defect of the stamping part after painting is further avoided.

Preferably, in combination with the above scheme, as shown in fig. 1 to 2, the mold structure further includes a shaping cutter block 3, and the shaping cutter block 3 is movably disposed at the side edges of the pressing core 1 and the lower mold reference mold 4; specifically, the shaping cutter block 3 is used for flanging or shaping the stamped part; further, in the process of flanging or shaping the stamped part by the shaping cutter block 3, the material pressing core insert 2 always presses the stamped part through the insert chamfer 5, so that the R angle of the stamped part cannot be warped.

Preferably, in combination with the above solutions, as shown in fig. 1 to 2, the material pressing core insert 2 is arranged on the side of the material pressing core 1 close to the shaping cutter block 3, and the quasi-mold chamfer 6 is arranged on the side of the lower mold reference mold 4 close to the shaping cutter block 3; in the process of flanging or shaping the stamped part by the shaping cutter block 3, the lower die reference die 4 always presses the stamped part through the standard die chamfer 6; specifically, press insert chamfer 5 and the punching press part chamfer (R angle) on the material core insert 2 to coincide, press the material core insert 2 to install on material core 1, press material core insert 2 along with pressing material core 1 back to end, can guarantee that the part includes R angle and lower mould reference die 4 and laminates completely, then plastic sword piece 3 begins work, after the shaping, 3 return strokes in-process of plastic sword piece, press the material core insert 2 and press material core 1 to push down the R angle of punching press part all the time, until 3 return strokes of plastic sword piece to leaving the part, press material core insert 2 and press material core 1 just to begin the return stroke.

Preferably, in combination with the above solution, as shown in fig. 1 to 2, the swaging core insert 2 is embedded in the punching surface of the bottom surface of the swaging core 1 and can be detached; further, the bottom of the swage core insert 2 can be provided with a shim for machining to form the insert chamfer 5, so that it is mainly considered: after long-time production wear or abnormal conditions damage, the gasket can be added at the bottom of the material pressing core insert, and the material pressing core insert is re-processed and directly ground, so that the maintenance working time is reduced, and the production, maintenance and maintenance cost is reduced.

Preferably, in combination with the above solutions, as shown in fig. 1 to 2, the press part is sandwiched between the insert chamfer 5 and the quasi-die chamfer 6 during the forming process, and the insert chamfer 5 and the quasi-die chamfer 6 are respectively attached in contact with the chamfer of the press part, and the insert chamfer 5 and the quasi-die chamfer 6 are respectively attached to the press part through surface to surface.

Preferably, in combination with the above scheme, as shown in fig. 1 to 2, the insert chamfer 5 and the quasi die chamfer 6 are arc-shaped corners capable of being attached to each other, so as to realize attachment.

Preferably, combine above-mentioned scheme, as shown in fig. 1 to fig. 2, the utility model provides a cold stamping forming die structure is car cold stamping forming die structure, specifically, car cold stamping forming die structure is used for solving the module and turns over the problem that whole technology A face oilstone is not wired; specifically, the utility model provides a cold stamping forming die structure solves the problem of the whole technology A face oilstone of turning over line not, can guarantee before the part shaping back, and the punching press part includes that R angle is laminated with lower mould benchmark mould all the time, and the R angle of punching press part can not warp, and A face oilstone can the line, and the punching press part can not produce the deformation, can not form appearance defect after the paint yet, has promoted customer perception quality; the material pressing part adopts an insert type structure and is detachably connected with the material pressing core 1.

The utility model provides a cold stamping forming die structure has following technological effect:

firstly, the utility model provides a cold stamping forming die structure can guarantee that the R angle of punching press part is laminated with lower mould benchmark mould all the time before the punching press part is formed, makes the R angle of punching press part can not warp in the course of working, and A face whetstone can be the line, and punching press part can not produce the deformation, can not form appearance defect after the paint yet, has promoted customer perception quality;

second, the utility model provides a cold stamping forming mould structure presses the material position to adopt the formula structure of inserting, after long-time production wearing and tearing, perhaps abnormal conditions damages the back, can directly grind and close through inserting the bottom at pressing the material core and increasing the gasket, reprocess, reduce and maintain maintenance man-hour, reduce production maintenance cost.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims (7)

1. A cold stamping forming die structure is characterized in that the die structure comprises a material pressing core (1), a material pressing core insert (2) and a lower die reference die (4); the material pressing core insert (2) is arranged on the stamping surface of the material pressing core (1), the lower die reference die (4) is arranged right below the material pressing core (1), and the material pressing core insert (2) can move towards the lower die reference die (4) along with the material pressing core (1); an insert chamfer (5) consistent with the chamfer of the stamping part is arranged on the stamping surface of the material pressing core insert (2), and a standard die chamfer (6) consistent with the chamfer of the stamping part is arranged on the forming surface of the lower die standard die (4); the material pressing core insert (2) is pressed down along with the material pressing core (1) to punch parts before and after the parts are formed, and the insert chamfer (5) and the standard die chamfer (6) are always attached.

2. A cold stamping and forming die structure according to claim 1, wherein the die structure further comprises a shaping cutter block (3), the shaping cutter block (3) is movably arranged at the side edges of the material pressing core (1) and the lower die reference die (4), and the shaping cutter block (3) is used for flanging or shaping a stamped part; in the process of flanging or shaping the stamped part by the shaping cutter block (3), the stamped part is always pressed by the material pressing core insert (2) through the insert chamfer (5).

3. A cold press forming die structure according to claim 2, wherein the material pressing core insert (2) is arranged on the side of the material pressing core (1) close to the shaping cutter block (3), and the quasi-die chamfer (6) is arranged on the side of the lower die reference die (4) close to the shaping cutter block (3); and in the process of flanging or shaping the stamped part by the shaping cutter block (3), the lower die reference die (4) always presses the stamped part through the reference die chamfer (6).

4. A cold press forming die structure according to claim 1, wherein the die core insert (2) is embedded in a press face of a bottom face of the die core (1) and is detachable; the bottom of the material pressing core insert (2) can be provided with a gasket, and the gasket is used for processing and forming the insert chamfer (5).

5. A cold press forming die structure according to claim 1, wherein the press part is sandwiched between the insert chamfer (5) and the quasi die chamfer (6) during forming, and the insert chamfer (5) and the quasi die chamfer (6) are respectively in contact fit with the chamfer of the press part.

6. A cold press forming die structure according to claim 1, wherein the insert chamfer (5) and the quasi die chamfer (6) are mutually conformable arc-shaped angles.

7. The cold stamping forming die structure according to any one of claims 1 to 6, wherein the cold stamping forming die structure is an automobile cold stamping forming die structure, and the automobile cold stamping forming die structure is used for solving the problem of A-surface oilstone disconnection in the module overturning process.

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