CN216828232U

CN216828232U - Floor longitudinal beam opening drawing die

Info

Publication number: CN216828232U
Application number: CN202122857807.5U
Authority: CN
Inventors: 吴转萍; 白宇; 彭坤龙; 尹康; 张伟
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-06-28
Anticipated expiration: 2031-11-22

Abstract

The utility model provides a floor longitudinal beam opening drawing die which comprises an upper female die, a lower male die and a blank holder, wherein the upper female die is provided with a die cavity; the upper female die, the lower male die and the blank holder are all spliced by adopting inserts to form an insert type structure, the splicing seams of the upper female die insert and the lower male die insert are arranged in a staggered mode, and the normal direction of the bottom surface of the upper female die and the lower male die is the direction of a splitting surface in a splitting principle; the lower punch insert is spliced in the lower fixed seat and is positioned in a mode of matching keys on the bottom surface; the upper concave die insert is embedded in the cavity of the upper die holder and is positioned by adopting a blocking key; the blank holder inserts are spliced and fixed in the blank holder body, and are matched in a mode that a key is matched on the bottom surface. According to the opening drawing die provided by the utility model, by changing the stamping direction, a blank is pressed by the upper female die and the blank holder in the product forming process, the female die and the male die are gradually formed, the parting line of the blank holder is moved outwards, the flange surface of the product is used as a part of the male die, the stability of the beam forming process is ensured, and the distortion rebound and the side wall curling rebound are reduced.

Description

Floor longitudinal beam opening drawing die

Technical Field

The utility model belongs to the technical field of floor longitudinal beam drawing, and particularly relates to a floor longitudinal beam opening drawing die.

Background

The existing floor beam part has the main characteristics that: the height difference is large, the long and narrow opening is a beam-shaped member, the opening of the product is only 60mm wide, the length is 2m, and the thickness of the material is 2 mm. Product height difference

And (4) forming transition. The direct press forming with the upward opening is adopted, the forming size depends on the nature of materials, no adjustment means is provided on site, the product has distortion, irregular crossing or necking rebound, the size precision is poor, and the change of the opening size has direct influence on the welding quality; meanwhile, the flange edge of the Z-shaped transition area generates serious wrinkling; the product quality requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the direct press forming of the floor longitudinal beam, the gradual shape conforming of the material is realized by changing the stamping direction and the material flowing mode, the defects of instability, wrinkling, distortion, springback and the like in the material forming process are eliminated, reference is provided for the forming of long and narrow beam parts, and therefore the floor longitudinal beam opening drawing die suitable for the gradual die forming process with the controlled material forming is provided.

Specifically, the utility model provides a floor longitudinal beam opening drawing die which comprises an upper female die, a lower male die and a blank holder; the upper female die, the lower male die and the blank holder are all of an inlaid structure formed by splicing inserts, the joints of the upper female die insert and the lower male die insert are arranged in a staggered mode, and the blocking principle of the upper female die and the lower male die is that the normal direction of the bottom surface is the direction of a blocking surface.

As a further illustration of the utility model, of said upper female die and said lower male dieFormed at both ends in the length direction

The cross section is shaped.

As a further explanation of the utility model, the lower punch insert is spliced in the lower fixed seat and positioned in a mode of matching keys on the bottom surface; the upper die insert is embedded in the cavity of the upper die base and is positioned by adopting a mode of inserting a stop key.

As a further explanation of the utility model, the blank holder insert is spliced and fixed in the blank holder body, is matched in a bottom surface matching key mode and is fixed by adopting a downward pressing type bolt, and the bolt is positioned outside a material forming area.

As a further illustration of the utility model, the drawing die employs a bottom-marking structure normal to the product profile.

As a further explanation of the utility model, the parting line of the blank holder adopts an outward moving design.

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

according to the opening drawing die, the blank is pressed by the upper female die and the blank holder in the product forming process by changing the stamping direction and changing the material flowing mode, the female die and the male die are gradually formed step by step, the blank holder parting line is moved outwards according to the process, the flange face of the product is used as a part of the male die, the stability of the beam forming process is ensured, the distortion rebound and the side wall curling rebound are reduced, the product shaping is effectively controlled, and reference is provided for the forming of long and narrow beam parts.

Drawings

FIG. 1 is a product form view of a floor stringer;

FIG. 2 is a drawing process supplemental profile after adjustment of the direction of the punch;

FIG. 3 is a front cross-sectional view of a floor stringer split draw die provided by the present invention;

FIG. 4 is a side cross-sectional view of a floor stringer open drawing die provided by the present invention;

FIG. 5 is an upper die view of a floor stringer draw-out die provided in accordance with the present invention;

FIG. 6 is a lower die view of a floor stringer split draw die provided in accordance with the present invention;

FIG. 7 is a perspective view of a floor stringer split draw die provided in accordance with the present invention;

FIG. 8 is a block diagram of an upper die insert provided by the present invention;

FIG. 9 is a drawing of an underbump insert block according to the present invention;

FIG. 10 is a block diagram of a binder insert provided by the present invention.

Description of the reference numerals

1. A flange face; 2. pressing noodles; 3. an upper die holder; 4, mounting a female die; 5. a blank holder; 6. a lower male die; 7. a lower fixed seat; 8. a lower die holder; 9. a key is arranged on the bottom surface; 10. a catch key; 11. the end mark.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

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 or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the 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. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention will be explained with reference to specific embodiments.

FIG. 1 is a diagram of the shape of a floor longitudinal beam product, and as can be seen from FIG. 1, in order to reduce the molding height of a die and simultaneously ensure the balance of initial contact points in the molding process, when the die structure is designed, the stamping direction of the floor longitudinal beam product is adjusted to be downward, the bottom surface reversely rotates by 6 degrees around a coordinate Y axis, and the normal direction of the position is taken as the stamping direction;

The utility model is arranged atWhen the mold structure is calculated, the following process analysis is based: FIG. 2 is a drawing process complementary surface design drawing after adjusting the punching direction, and the process mode of adopting the opening drawing, namely, two ends in the length direction

The shape sections are all open; arranging the drawing process supplement surfaces of the flange lowering table only in the front and back directions of a floor longitudinal beam product, wherein the maximum height of a product opening is 115mm, the middle height is 80mm, and the minimum height is 60mm, performing platform lowering treatment, designing the flange surface with the height of 80mm and the flange surface with the height of 115mm as the same plane, and gradually transiting to be smoothly connected with the surface with the height of 60mm and the height of 5mm to form a drawing material pressing surface; in the process supplement, the outer edge of the product extends for 12-15mm, the extended edge is used as a process supplement die drawing surface, and the process supplement part is formed by chamfering after the process supplement die drawing surface is intersected with the pressing surface. The position of the center of the drawing rib groove 15mm away from the process supplement outer parting line is designed, and the gradual molding of the material pressing in the drawing process is ensured.

As shown in fig. 3-10, in combination with the above drawing process requirements, the present invention proposes the following specific floor stringer draw-out die: comprises an upper female die 4, a lower female die 6 and a blank holder 5; the upper female die 4, the lower male die 6 and the blank holder 5 are all formed into an inlaid structure by adopting insert splicing, the joints of the upper female die insert and the lower male die insert are arranged in a staggered mode, and the upper female die 4 and the lower male die 6 are divided into blocks in the direction of a block surface in the normal direction of the bottom surface. The upper female die 4 and the lower male die 6 are formed at both ends in the length direction

The cross section is shaped. The drawing die adopts a structure of a bottom mark 11 in the normal direction of a product molded surface.

As shown in fig. 3-9, the lower punch insert is spliced in the lower fixing seat 7 and is positioned in a mode of matching a key 9 on the bottom surface; the upper die insert is embedded in the cavity of the upper die base 3 and is positioned by adopting a mode of inserting the stop key 10.

As shown in fig. 10, the blank holder insert is fixed in the blank holder body in a splicing manner, is fitted in a bottom surface key fitting manner, and is fixed by a downward-pressing bolt, and the bolt is positioned outside the material forming area.

The blank is pressed by the upper female die 4 and the blank holder 5 in the product forming process, the female die and the male die are gradually formed step by step, the parting line of the blank holder 5 is moved outwards according to the process, the flange face 1 of the product is used as one part of the male die, the stability of the beam forming process is ensured, the distortion rebound and the side wall curling rebound are reduced, and the product shaping is effectively controlled.

The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the utility model by a person skilled in the art belong to the protection scope of the utility model.

Claims

1. A floor longitudinal beam opening drawing die is characterized by comprising an upper female die, a lower male die and a blank holder; the upper female die, the lower male die and the blank holder are all of an inlaid structure formed by splicing inserts, the joints of the upper female die insert and the lower male die insert are arranged in a staggered mode, and the blocking principle of the upper female die and the lower male die is that the normal direction of the bottom surface is the direction of a blocking surface.

2. The floor longitudinal beam opening drawing die of claim 1, wherein the lower punch insert is spliced in the lower fixing seat and positioned in a bottom surface key matching mode; the upper die insert is embedded in the cavity of the upper die base and is positioned by adopting a mode of inserting a stop key.

3. The floor stringer draw bench of claim 1 wherein the binder inserts are secured in a splice in the binder body and are keyed on the underside and secured with hold-down bolts located outside the material forming area.

4. The floor stringer draw die of claim 1, wherein the draw die employs a bottom-marking structure normal to the product profile.

5. The floor stringer open drawing die of claim 1, wherein a draw line of said blankholder is of an outwardly moving design.