CN218049946U - Flanging die for exhaust tail pipe decoration cover - Google Patents

Abstract

The utility model discloses a tail pipe decorates cover turn-ups mould, including die, terrace die, the top of terrace die includes annular shaping piece, the bottom of die includes annular shaping groove, annular shaping piece's outline with form the die cavity between annular shaping groove's the interior outline, annular shaping piece's lateral surface is the curved surface, annular shaping groove's medial surface is the curved surface. The utility model has the advantages that: the flanging width range of the product is greatly widened, materials needing to participate in shaping deformation during shaping are reduced, the wrinkling risk is greatly reduced, the surface quality of the decorative cover is improved, and the surface treatment cost is reduced.

Description

Flanging die for exhaust tail pipe decoration cover

Technical Field

The utility model relates to an automobile parts processing especially relates to a tail pipe device cover turn-ups mould.

Background

The flanging is a stamping method for turning the outer edge or the hole edge of the blank or the semi-finished product into a vertical edge along a certain curve under the action of a die, and the flanging method can be used for processing a three-dimensional part with a complex shape and good rigidity. According to the difference of the edge state, stress and strain state of the blank, the blank can be conveniently divided into an inner hole flanging and an outer edge flanging.

At present, the flanging process adopted by the tail pipe decorative cover adopts vertical flanging, so that the flanging width and the flanging R angle of a product have relatively strict requirements, and once the flanging width and the flanging R angle exceed the specified range, the vertical flanging process cannot meet the product forming requirement, so that the product has quality defects of wrinkling, deformation and the like. Moreover, the prior art decoration cover flanging process can only be used for flanging a product into a straight surface, if the product is a conical surface, the product needs to be shaped into the conical surface by a shaping process, so that the product is wrinkled and deformed due to excessive materials participating in shaping, and the repairing and polishing cost is increased.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms part of the prior art that is already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the problems that at present, products with conical surfaces need to be shaped after flanging, wrinkling and deformation of the products are caused, and repairing and polishing costs are increased are solved.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

the utility model provides a tail pipe decorates cover turn-ups mould, includes die, terrace die, the top of terrace die includes annular shaping piece, the bottom of die includes annular shaping groove, the outline of annular shaping piece with form the die cavity between the interior outline of annular shaping groove, the lateral surface of annular shaping piece is the curved surface, the medial surface in annular shaping groove is the curved surface.

The utility model is suitable for a top is the work piece of the conical surface, and the work piece can be itself and for the conical surface on the top, also can be the straight face and prefabricate into the conical surface, arranges the outside of terrace die in with the work piece of the conical surface in top, through a lot of with terrace die and work piece in proper order to the die process, the terrace die constantly is drawn into the work piece top with the die, finally accomplishes the shaping of product. The utility model discloses a take turn-ups mould of curved surface to carry out the conical surface turn-ups at the turn-ups in-process, because the conical surface has been done before the work piece turn-ups and has handled, the scope of product turn-ups width has been widened greatly, need participate in the material that the plastic warp when the plastic reduces, greatly reduced the risk of corrugating, improved the surface quality who decorates the cover, reduced surface treatment's cost.

Preferably, the cross section of the curved surface is any one of an inclined surface, a parabolic surface and an arc surface.

Preferably, the bottom dimension of the curved surface of the annular forming block is larger than the top dimension, and the top dimension of the curved surface of the annular forming groove is larger than the bottom dimension.

Preferably, the clearance between the female die and the male die is 108% -110% of the thickness of the product material.

Preferably, the angle R between the female die and the male die is smaller than R5.

Preferably, the device also comprises an upper template, a lower template and a male die cushion block which can move up and down, the male die cushion block penetrates out along the middle part of the lower template, the bottom of a male die is connected with the male die cushion block, and a female die is connected with the bottom of the upper template.

Preferably, the device further comprises a sheath which is sleeved outside the male die, and the bottom of the sheath is connected with the lower die plate.

The sheath can protect other parts of the workpiece in the flanging process, and prevent other positions from deforming.

Preferably, the die further comprises a backing plate, and the backing plate is connected with the top surface of the lower die plate.

Preferably, the device further comprises an inner limiting block, and the inner limiting block is connected with the middle part of the top end of the male die.

Preferably, the device also comprises a workpiece with a pre-made conical top end, and the workpiece is arranged outside the punch.

The utility model has the advantages of:

(1) The utility model is suitable for a work piece that the top is the conical surface, the work piece can be itself for the top be the conical surface, also can be the straight face and prefabricate into the conical surface, arranges the outside of terrace die in with the work piece of the conical surface in top, through a lot of with terrace die and work piece in proper order to the die process, the terrace die constantly is drawn into on work piece top with the die, finally accomplishes the shaping of product. The utility model discloses a take the turn-ups mould of curved surface to carry out the conical surface turn-ups in the turn-ups process, because work piece has done conical surface treatment before the turn-ups, widened the scope of product turn-ups width greatly, the material that needs to participate in the plastic deformation reduces when the plastic, greatly reduced the risk of corrugating, improved the surface quality of decorating the cover, reduced the cost of surface treatment;

(2) The sheath can protect other parts of the workpiece in the flanging process, and prevent other positions from deforming.

Drawings

FIG. 1 is a schematic structural diagram of a product according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 4 is a schematic structural view of a flanging die for a decorative cover of an exhaust tailpipe;

FIG. 5 is a side view of a tail pipe trim cover flanging die;

FIG. 6 isbase:Sub>A cross-sectional view taken at A-A of FIG. 4;

FIG. 7 is an enlarged view taken at I in FIG. 6;

reference numbers in the figures:

1. a female die; 11. a first curved surface; 2. a male die; 21. a second curved surface; 3. mounting a template; 4. a lower template; 5. a male die cushion block; 6. a base plate; 7. a sheath; 8. an inner limiting block;

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 7, a flanging die for a decorative cover of a tail pipe comprises a female die 1 and a male die 2, as shown in fig. 5, the top of the male die 2 comprises an annular forming block, the bottom of the female die 1 comprises an annular forming groove, a forming cavity is formed between the outer contour of the annular forming block and the inner contour of the annular forming groove, the outer side surface of the annular forming block is a first curved surface 11, and the inner side surface of the annular forming groove is a second curved surface 21.

In this embodiment, as shown in fig. 7, the first curved surface 11 and the second curved surface 21 are both conical surfaces, and the angle range of the conical surfaces may be 3 to 8 °. And the bottom size of the first curved surface 11 of the annular forming block is larger than the top size, and the top size of the second curved surface 21 of the annular forming groove is larger than the bottom size. So that the first curved surface 11 is upwardly and inwardly contracted and the second curved surface 21 is downwardly and outwardly expanded.

The clearance between the female die 1 and the male die 2 is 108-110% of the thickness of the product material.

And the R angle between the female die 1 and the male die 2 is smaller than R5.

In this embodiment, as shown in fig. 4 to 7, the flanging die for the decorative cover of the tail pipe further includes an upper die plate 3, a lower die plate 4 and a punch pad 5, the punch pad 5 penetrates through the middle of the lower die plate 4 and is connected to the bottom of the punch 2, and the female die 1 is connected to the bottom of the upper die plate 3.

The lifting motion of the upper template 3 can be realized by a cylinder, a hydraulic cylinder, an electric push rod and the like, and the lifting motion of the upper template 3 can drive the female die 1 to move downwards to realize die assembly with the male die 2.

The top surface of lower bolster 4 passes through a backing plate 6 of bolted connection, the elevating movement of lower bolster 4 can be by the cylinder, the pneumatic cylinder, electric putter etc. realize, during the turn-ups, the work piece is located the outside of terrace die 2, the bottom of work piece supports on backing plate 6, cope match-plate pattern 3 drives backing plate 6 and rises a plurality of strokes, terrace die cushion 5 drives terrace die 2 and rises a plurality of strokes, with the stroke cooperation that the work piece rises, can realize the top of work piece inwards to roll up many times gradually, the inside turn-ups in final stroke work piece top is the appearance of annular shaping piece cross-section.

The flanging die for the exhaust tail pipe decorative cover further comprises a sheath 7 and an inner limiting block 8, wherein the sheath 7 is sleeved outside the male die 2, and the bottom of the sheath 7 is connected with the base plate 6. The sheath 7 can protect other parts of the workpiece in the flanging process and prevent other parts from deforming.

The inner limiting block 8 is connected with the middle part of the top end of the convex die 2. The positioning device is used for positioning the position which is flanged and can also be used for positioning the position of the female die 1.

The embodiment is suitable for workpieces with conical surfaces at the top ends, and the workpieces can be workpieces with conical surfaces at the top ends or workpieces with the conical surfaces prefabricated by straight surfaces.

When the device works, a workpiece is preformed to form a conical surface, the angle of the conical surface is 3-7 degrees, then the workpiece is placed outside the male die 2, then the workpiece is rolled into a cavity (in an annular forming block) of the male die 2 on a specific flanging device in 24 steps along the female die 1, and after the primary forming of a product is completed, the product is shaped to the final size through a shaping die. The male die 2 and the workpiece are moved towards the female die 1 for multiple times, the male die 2 and the female die 1 continuously roll the top end of the workpiece, and finally the product is formed, and as shown in figures 1 and 3, the decorative cover with the conical surface of 6.2 degrees is finally formed.

In the embodiment, the flanging die with the curved surface is used for performing conical surface flanging in the flanging process, because conical surface treatment is performed before workpiece flanging, the flanging width range of a product is greatly widened, the flanging width refers to the distance from an outer straight edge of the product to an inner straight edge of the flanging, only 10mm can be achieved before taper flanging, 15mm can be achieved after taper flanging, materials needing to participate in shaping deformation during shaping are reduced, the wrinkling risk is greatly reduced, the surface quality of a decorative cover is improved, and the surface treatment cost is reduced.

The second embodiment:

the difference between this embodiment and the first embodiment is: the cross sections of the first curved surface 11 and the second curved surface 21 are parabolic surfaces or arc surfaces.

Can be suitable for the flanging of other curved surfaces which are not straight surfaces.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a tail pipe decorates cover turn-ups mould, its characterized in that, includes die, terrace die, the top of terrace die includes annular shaping piece, the bottom of die includes annular shaping groove, the outline of annular shaping piece with form the die cavity between the interior outline of annular shaping groove, the lateral surface of annular shaping piece is the curved surface, the medial surface in annular shaping groove is the curved surface.

2. The flanging die for the decorative cover of the tail pipe according to claim 1, wherein the section of the curved surface is any one of an inclined surface and a cambered surface.

3. The flanging die for the decorative cover of the tail pipe as claimed in claim 1, wherein the bottom dimension of the curved surface of the annular forming block is larger than the top dimension, and the top dimension of the curved surface of the annular forming groove is larger than the bottom dimension.

4. The flanging die for the decorative cover of the exhaust tail pipe according to claim 1, wherein the gap between the female die and the male die is 108% -110% of the thickness of the product material.

5. The flanging die for the decorative cover of the tail pipe according to claim 1, wherein the R angle between the female die and the male die is smaller than R5.

6. The flanging die for the decorative cover of the tail pipe according to claim 1, further comprising an upper die plate, a lower die plate and a male die cushion block, wherein the upper die plate, the lower die plate and the male die cushion block can move up and down, the male die cushion block penetrates out along the middle of the lower die plate, the bottom of the male die is connected with the male die cushion block, and the female die is connected with the bottom of the upper die plate.

7. The flanging die for the decorative cover of the tail pipe according to claim 6, further comprising a sheath, wherein the sheath is sleeved outside the male die, and the bottom of the sheath is connected with the lower die plate.

8. The flanging die for the decorative cover of the tail pipe according to claim 6, further comprising a backing plate, wherein the backing plate is connected with the top surface of the lower template.

9. The flanging die for the decorative cover of the tail pipe according to claim 1, further comprising an inner limiting block, wherein the inner limiting block is connected with the middle part of the top end of the male die.

10. The flanging die for the decorative cover of the tail pipe according to claim 1, further comprising a workpiece with a pre-made conical top end, wherein the workpiece is arranged outside the male die.

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