CN105013942A - Stamping die for automobile fender - Google Patents

Abstract

The invention discloses an automobile fender stamping die which comprises an upper die base, a lower die base, two upper die forming blocks and two lower die forming blocks, wherein the two upper die forming blocks are arranged on the upper die base, the positions, opposite to the upper die forming blocks, of the lower die forming blocks are respectively arranged on the lower die base, the two upper die forming blocks are in 180-degree rotational symmetry with each other on the upper die base, a plurality of upper die trimming cutter blocks which are arranged in an S shape are arranged between the two upper die forming blocks on the upper die base, and the lower die trimming cutter block matched with the upper die trimming cutter blocks is arranged between the two lower die forming blocks on the lower die base. According to the automobile fender stamping die, the two upper die forming blocks are arranged on the upper die base, and the two lower die forming blocks are correspondingly arranged on the lower die base, so that two workpieces can be stamped at one time, and the production efficiency is high; the two upper die forming blocks are arranged on the upper die base in a rotational symmetry manner, so that the die is compact in overall structure and small in occupied space.

Description

Stamping die for automobile fender

technical field

The invention belongs to the technical field of moulds, and in particular, the invention relates to a stamping die for an automobile fender.

Background technique

With the rapid development of the car industry, especially the expansion of the domestic small car market and the urgent need for cost reduction, major OEMs require to save product manufacturing costs and improve production efficiency.

The fenders on the car are made by stamping on the stamping die. Since the current stamping die can only stamp one fender at a time, the production efficiency is low, and the production capacity cannot meet the requirements. If the production capacity is to be increased, it is necessary to increase hardware investment, and the hardware cost occupies a large proportion of the product production cost. This will result in an increase in product manufacturing costs.

Contents of the invention

The invention provides a stamping die for an automobile fender, aiming at improving the production efficiency of the fender.

In order to achieve the above object, the technical solution adopted by the present invention is: a stamping die for an automobile fender, comprising an upper mold base, a lower mold base, an upper mold forming block arranged on the upper mold base and a lower mold base arranged on the lower mold base Molding blocks, the upper mold forming blocks are provided with two on the upper mold base, and the lower mold forming blocks are respectively provided with one on the position of each upper mold forming block on the lower mold base, two The upper mold forming blocks are 180-degree rotational symmetry on the upper mold base, and the upper mold base is located between the two upper mold forming blocks. There are a plurality of upper mold edge trimming knives arranged in an S shape, and the lower mold base is located on the upper mold base. A lower mold edge trimming knife block cooperating with the upper mold edge trimming knife block is arranged between the two lower mold forming blocks.

The arc-shaped sides of the two upper mold forming blocks are opposite, the rotation axis of the two upper mold forming blocks is located between the two arc-shaped sides, and the two ends of each upper mold forming block are respectively located on the rotation axis on both sides.

The upper die edge trimming knife block is provided with four pieces in total, and the four upper die edge trimming knife blocks are arranged between the two upper die forming blocks and arranged sequentially from one end of the upper die forming block along an S shape toward the other end, And two by two groups are mutually 180 degree rotational symmetry on described upper mold base.

The upper die forming block is slidingly connected with the upper die base through a discharge screw, and a nitrogen gas spring is also arranged between the upper die base and the upper die forming block.

The forming block of the upper die is provided with a punch for punching a workpiece, and the forming block of the lower die is provided with a through hole aligned with the position of the punch on the forming block of the upper die.

The punch on the forming block of the upper mold is a circular punch for punching round holes.

The upper die base is provided with a circle of trimming cutter blocks surrounding the two upper die forming blocks on the outer sides of the two upper die forming blocks.

There are three edge trimmer blocks of the lower die, one of which is located in the middle of the S-shape, and the other two edge trimmer blocks are located at both ends of the S-shape.

A plurality of scrap cutters are dispersedly arranged on the lower mold base around the outer sides of the two lower mold forming blocks.

The upper mold base is provided with a side pin embedded in a long groove provided on the side of the upper mold forming block.

In the automobile fender stamping die of the present invention, two upper die forming blocks are arranged on the upper die base, and two lower die forming blocks are correspondingly arranged on the lower die base, so that two workpieces can be stamped at one time, and the production efficiency is high; The two forming blocks of the upper mold are arranged rotationally symmetrically on the upper mold base, which makes the overall structure of the mold compact and takes up less space; Conducive to workpiece forming and retrieving.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is a structural schematic diagram of an automobile fender stamping die;

Fig. 2 is the mold structure schematic diagram after removing upper die holder;

Fig. 3 is the top view of the mold after removing the upper die holder;

Fig. 4 is a schematic diagram of the mold structure after removing the upper mold base, the nitrogen spring, the discharge screw, an upper mold forming block and a part trimming knife block;

Fig. 5 is the bottom view of the mold after removing the lower mold base on the basis of Fig. 4;

Fig. 6 is the bottom view of the mold after removing the lower molding block on the basis of Fig. 5;

Fig. 7 is a schematic view of the structure of the through hole on the molding block of the lower mold;

Fig. 8 is the bottom view of upper mold base;

Fig. 9 is a schematic diagram of the cooperation between the upper mold forming block and the lower mold forming block;

Fig. 10 is the assembly drawing of lower mold forming block and lower mold base;

Fig. 11 is the front view of stamping die;

Labeled in the figure:

1. Upper mold base; 2. Lower mold base; 3. Upper mold forming block; 4. Lower mold forming block; 5. Trimming knife block; 6. Side pin; 7. Long groove; 8. Scrap cutter; 9 , nitrogen spring; 10, unloading screw; 11, unloading surface; 12, punch; 13, clapboard; Side knife block; 17, the third upper die edge trimming knife block; 18, the fourth upper die edge trimming knife block; 19, the first lower die edge trimming knife block; 20, the second lower die edge trimming knife block; 21, 22. Bushing; 23. Pin; 24. Inner base; 25. Unloading channel; 26. Lower base; 27. Centerline of rotation.

Detailed ways

The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

As shown in Fig. 1 to Fig. 11, a kind of automobile fender stamping die of the present invention comprises upper mold base 1, lower mold base 2, upper mold forming block 3 arranged on upper mold base 1 and lower mold base 2 The upper and lower die forming blocks 4, the upper die forming block 3 and the lower die forming block 4 cooperate to stamp the workpiece, the shape of the forming surface on the upper die forming block 3 and the lower die forming block 4 is consistent with the shape of the automobile fender match. In this fender stamping die, the upper mold forming block 3 is provided with two on the upper mold base 1, and the lower mold forming block 4 is respectively provided with one on the lower mold base 2 facing each upper mold forming block 3, and two The upper die forming blocks 3 are 180-degree rotational symmetry on the upper die base 1, and the corresponding two lower die forming blocks 4 are also 180-degree rotational symmetry on the lower die base 2, so that two identical The automobile fender of the car obviously improves the production efficiency; and the two upper mold forming blocks 3 and the two lower mold forming blocks 4 are arranged in rotational symmetry on the upper mold base 1 and the lower mold base 2 respectively, so that the overall structure of the mold is compact , takes up little space. In addition, on the upper die base 1, between the two upper die forming blocks 3, there are a plurality of upper die trimming cutter blocks arranged in an S shape; on the lower die base 2, between the two lower die forming blocks 4, a The edge trimming knife block of the upper mold is matched with the edge trimming knife block of the lower mold. The upper mold edge trimming knife block and the lower mold edge trimming knife block can be used to cut off the two connected fenders during stamping, which is beneficial to the formation of the fenders. And the material after punching, and there is no need to use other tools for subsequent separation operations, thereby further improving production efficiency.

Specifically, one side of the automobile fender in the length direction generally has an arc section for accommodating automobile wheels, and the edges of the molding surfaces of the upper molding block 3 and the lower molding block 4 have a section of arc correspondingly. Correspondingly, one side of the upper mold forming block 3 and the lower mold forming block 4 is an arc surface, and the arc surface on the upper mold forming block 3 extends from one end of the upper mold forming block 3 to the other end, and the lower mold forming block The arc surface on the 4 also extends from one end of the lower molding block 4 to the other end. In this fender stamping die, the shapes of the upper die base 1 and the lower die base 2 are also rectangular, and the upper die base 3 and the lower die base 4 are concentrated in the length direction of the upper die base 1 and the lower die base 2 respectively. on the middle position setting. As shown in FIG. 11 , a straight line passing through the center points of the upper mold base 1 and the lower mold base 2 is taken as the rotation centerline 27 , and the rotation centerline 27 is perpendicular to the top surface of the upper mold base 1 . The two upper mold forming blocks 3 on the upper mold base 1 are arranged with the rotation center line 27 as the axis of rotation, and are arranged in a manner of mutual 180-degree rotational symmetry (that is, one of the upper mold forming blocks 3 takes the rotation center line 27 as the axis The position after the 180-degree rotation is the installation position of another upper mold block 3), in addition, the arc-shaped sides of the two upper mold blocks 3 are opposite, and the rotation axes of the two upper mold blocks 3 are also located at two Between the two arc-shaped sides, the two ends of each upper molding block 3 are respectively located on both sides of the axis of rotation. Through these settings, the two upper mold blocks 3 on the upper mold base 1 are staggered, as shown in Figure 3 . Correspondingly, the two lower mold forming blocks 4 on the lower mold base 2 are also arranged in the same manner as the upper mold forming blocks 3, and the two lower mold forming blocks 4 on the lower mold base 2 are based on the center line of rotation 27. The rotation axes are arranged in a manner of 180-degree rotational symmetry to each other. In addition, the arc-shaped sides of the two lower mold forming blocks 4 are opposite, and the rotation axes of the two lower mold forming blocks 4 are also located between the two arc-shaped sides. Between, the two ends of each lower molding block 4 are respectively located on both sides of the rotation axis. Through these settings, the two lower mold forming blocks 4 on the lower mold base 2 are also staggered, as shown in Figure 5 .

Between the two upper mold forming blocks 3 of the upper die base 1 there is a space for accommodating the upper die trimming cutter block, as shown in Figure 8, the upper die base 1 is provided with grooves for accommodating the two upper die forming blocks 3 , the two upper die forming blocks 3 are slidingly connected with the upper die base 1 through a plurality of unloading screws 10, and a plurality of nitrogen springs 9 are also arranged between the upper die base 1 and each upper die forming block 3. As shown in Figure 3, the nitrogen springs 9 are arranged along the edge of the upper die forming block 3. In this embodiment, there are seven nitrogen springs 9 on each upper die forming block. Three unloading screws 10 are provided, and the three unloading screws 10 are respectively located near the two ends of each upper mold block 3 and near the middle. Since the opposite sides on the two upper mold forming blocks 3 are arc surfaces, and the two upper mold forming blocks 3 are arranged in a staggered manner, the space between the two upper mold forming blocks 3 is in an S shape, and the upper mold forming blocks 3 in an S shape are arranged in an S shape. There are four edge trimming knife blocks in total, and the four upper mold edge trimming knife blocks are arranged between the two upper mold forming blocks 3 and arranged in sequence from one end of the upper mold forming block 3 along the S shape toward the other end, followed by the first One upper mold edge trimming knife block 15, the second upper mold edge trimming knife block 16, the third upper mold edge trimming knife block 17 and the fourth upper mold edge trimming knife block 18, and four edge trimming knife blocks are in pairs On the upper mold base 1, it is 180 degrees rotationally symmetrical to each other, that is, the first upper mold edge trimming knife block 15 and the second upper mold edge trimming knife block 16 form a group, and the third upper mold edge trimming knife block 17 and the third upper mold edge trimming knife block 17 Die trimming knife block 17 is another group, and the shape of the first patrix trimming knife block 15 is identical with the shape of the 4th patrix trimming knife block 18, and the second patrix trimming knife block 16 is the same as the 3rd patrix trimming knife block. The edge-cutting knife blocks 17 have the same shape, and the two groups of edge-cutting knife blocks also use the rotation center line 27 as the axis of rotation. Four patrix trimming cutter blocks are fixedly installed on the inner base 24 protruding downwards on the inner top surface of the groove of the patrix base 1, and the two patrix molding blocks 3 are positioned at the both sides of the interior base 24, the inner The base 24 is also S-shaped, and its outer edge is roughly the same shape as the outer edge of the overall structure formed by the four edge trimmer blocks to ensure that the four edge trimmer blocks can be reliably fixed, so that the edge trimmer blocks can be placed on the top. Arrangement on mold base 1. Because when the fender is stamped, a whole large plate is used to punch out two fenders on the mold, so it is necessary to cut off the plate during stamping so that the two fenders can be separated Open, the edge trimming knife block between two upper mold forming blocks 3 can move along with the upper mold base 1, and two upper mold forming blocks 3, two lower mold forming blocks 4 and the lower mold edge trimming knife block Cooperate to cut off the plate.

As preferably, the inner base 24 and the upper die base 1 can be integrally formed, which is not only convenient for processing and manufacturing, but also the upper die base 1 is a cast integral structure. When punching, the upper die base 1 drives four trimming blades simultaneously Pressing down can ensure that two fenders are cut off at one time, with high efficiency and good product consistency.

The upper die forming block 3 is provided with a punch 12 for punching a workpiece, and the corresponding lower die forming block 4 is provided with a through hole aligned with the punch 12 on the upper die forming block 3 . Since the fender is provided with a circular mounting hole for connecting with the vehicle body, in order to process these mounting holes, as shown in Figure 3, a punching hole is provided at the middle of the wide end of the upper mold block 3. Head 12, and the punch 12 is a circular punch 12 for punching round holes. The setting of this punch 12 meets the requirement of punching the automobile fender, correspondingly, a through hole is provided on the lower mold forming block 4 corresponding to the punch 12, which is used for blanking, and the waste after punching is passed through The hole falls below the lower molding block 4 .

As a modification, the bottom of the punch 12 on the upper mold block 3 is also provided with a concave hole, which is a hole formed by indenting from the bottom surface of the punch 12 in the axial direction toward the inside of the punch 12. The concave hole can make the punch The punching force bearing surface of the head 12 is greatly reduced, prolonging the service life of the punch 12 . In addition, an arc-shaped edge is provided at the bottom edge of each punch 12, so that the punch 12 and the stamped metal sheet are in flexible contact, and sharp edges are avoided at the mounting holes of the automobile fender.

As shown in Figure 7, an annular bushing 22 is also provided in the through hole aligned with the punch 12 on the lower die forming block 4, and the bushing 22 is embedded in the through hole. In order to ensure that the bushing 22 is reliably fixed, the bushing A pin 23 is also inlaid between the sleeve 22 and the inner wall of the through hole. The pin 23 makes the bushing 22 tightly fit with the through hole, preventing the bushing 22 from slipping.

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the bottom surface of the upper die base 1 is provided with a circle of trimming cutter blocks 5 surrounding the two upper die forming blocks 3 on the outer sides of the two upper die forming blocks 3 , Trimming cutter block 5 cooperates with the edge of lower mold forming block 4, and workpiece is trimmed when stamping.

As shown in Figure 10, two lower bases 26 are formed on the top surface of the lower mold base 2, and the two lower bases 26 are respectively used to install a lower mold forming block 4, and the outer edge shape of the lower base 26 is consistent with the lower mold forming block 4. The shape of the bottom edge of the bottom is the same to ensure that the lower molding block 4 is reliably fixed. In the lower mold base 2, there are also two discharge passages 25 that are between the two lower bases 26 and are concave downwards. The two discharge passages 25 also use the rotation center line 27 as the axis of rotation, according to the mutual relationship. Arranged in a 180-degree rotationally symmetrical manner, there is a partition between the opposite ends of the two discharge passages 25, and the partition is used to install a lower mold trimming knife block. The two unloading passages 25 are arc-shaped passages extending from the partition plate along the arc-shaped edges of the lower base 26 above each towards the opposite sides of the lower mold base 2, correspondingly on the opposite sides of the lower mold base 2 An opening is formed respectively, and the bottom discharge surface 11 of each discharge channel 25 is a slope that gradually slopes downward. During the stamping process, the scraps cut by the edge trimming blades of the upper die will fall into the two discharge channels 25 below, and the wastes will gradually slide down through the bottom discharge surface 11 of the discharge channel 25 until it passes through the lower die base 2 The side openings drop down.

The discharge channel 25 of the above-mentioned structure is set between the two lower mold forming blocks 4 on the lower mold base 2. This discharge channel 25 has a large space and can accommodate relatively large volumes of waste materials, and can ensure that the waste materials can slide down automatically. The lower mold base 2 flows out from inside to outside.

As shown in Fig. 5, Fig. 6 and Fig. 10, there are three edge trimming cutter blocks in the lower die, which are respectively the first lower die edge trimmer block 19, the second lower die edge trimmer block 20 and the third lower die trimmer block. Side cutter block 21, wherein the second lower die trimmer cutter block 20 is positioned at the middle position of S shape, promptly is installed on the dividing plate between two unloading channels 25, the first lower die trimmer cutter block 19 and the second The lower mold trimming knife block 20 is respectively positioned at the two ends of the S shape, and is installed on the overlapping blocks stretched out from the small ends of each lower base 26 respectively. The arc-shaped side extends and is fixed on the opposite lower base 26 . Partition boards and overlapping blocks are arranged on the lower mold base 2 to facilitate the setting of the edge trimming knife block of the lower die, to ensure that the edge trimming knife block of the lower mold can be reliably fixed, and each overlapping block is respectively located at two discharge channels 25 Above, it will not hinder the discharge channel 25, ensuring that the discharge channel 25 is unimpeded.

As shown in Figure 2 and Figure 5, a plurality of scrap cutters 8 are scattered around the outer sides of the two lower molding blocks 4 on the lower mold base 2, and each scrap cutter 8 is located under a trimming knife block 5 respectively , respectively cooperate with the trimming knife block 5 at the corresponding position. In this embodiment, there are eight scrap cutters 8 in total. These scrap cutters 8 are provided to ensure fast and effective removal of scrap on the workpiece.

As shown in Figure 2, four side pins 6 embedded in the long slots 7 provided on the side of the upper mold block 3 are also provided on the upper mold base 1, and the four side pins 6 are arranged in pairs on the upper mold base 1. On the top, the center line of rotation 27 is used as the axis of rotation, and they are arranged in a 180-degree rotational symmetry with each other. Two long grooves 7 are respectively provided on the same outer surface of each upper mold block 3, and the long grooves 7 are along the direction parallel to the center line of rotation 27. Make an extension. The side pin 6 protrudes toward the fast direction of the lower mold forming along the direction perpendicular to the rotation center line 27, one end of the side pin 6 is fixed on the upper mold base 1, and the other end is inserted into the long groove 7 on the side of the lower mold forming block 4 , but not in contact with the upper mold forming block 3, these four side pins 6 are safety side pins 6, and when the discharge bolt drives the upper mold forming block 3 to move upward, the side pins 6 can play a role of safety protection.

The present invention has been exemplarily described above with reference to the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as various insubstantial improvements are made using the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all within the protection scope of the present invention within.

Claims (10)

1. a fender diel, comprise upper bolster, die shoe, the counterdie forming blocks being located at the upper die forming block on upper bolster and being located on die shoe, it is characterized in that: described upper die forming block is provided with two on described upper bolster, described counterdie forming blocks is just respectively equipped with one to the position of each upper die forming block on described die shoe, two upper die forming blocks phase 180 degree of Rotational Symmetries each other on upper bolster, upper bolster is provided with between two upper die forming blocks multiple patrix cutting edge cutter blocks of S-shaped layout, die shoe is provided with between two counterdie forming blocks the counterdie cutting edge cutter block coordinated with patrix cutting edge cutter block.

2. fender diel according to claim 1, it is characterized in that: the arcuate flanks of described two upper die forming blocks is relative, the position of rotation between two arcuate flanks of two upper die forming blocks, and the both ends of each upper die forming block lay respectively at the both sides of rotation.

3. fender diel according to claim 2, it is characterized in that: described patrix cutting edge cutter block is provided with four pieces altogether, four pieces of patrix cutting edge cutter blocks are between described two upper die forming blocks and arrange successively along S shape towards the other end from upper die forming block one end, and one group of 180 degree of Rotational Symmetry each other mutually on described upper bolster between two.

4. the fender diel according to Claims 2 or 3, is characterized in that: described upper die forming block is slidably connected by unloading bolt and described upper bolster, between upper bolster and upper die forming block, be also provided with nitrogen spring.

5. fender diel according to claim 4, is characterized in that: described upper die forming block is provided with for the drift to workpiece punching, and corresponding described counterdie forming blocks is provided with the through hole alignd with the forcer position on upper die forming block.

6. fender diel according to claim 5, is characterized in that: the drift on described upper die forming block be one for rushing the round punch of circular hole.

7. fender diel according to claim 6, is characterized in that: described upper bolster is provided with the circle edge iron block in the outside of two described upper die forming blocks around two upper die forming blocks.

8. automobile B-pillar inner plate diel according to claim 7, it is characterized in that: described counterdie cutting edge cutter block is provided with three pieces altogether, wherein one piece of counterdie cutting edge cutter block is positioned at the centre position of S shape, and other two pieces of counterdie cutting edge cutter blocks lay respectively at the end positions of S shape.

9. fender diel according to claim 8, is characterized in that: around the multiple scrap cutter of outside scattering device of two described counterdie forming blocks on described die shoe.

10. fender diel according to claim 9, is characterized in that: described upper bolster is provided with the side pin in the elongated slot of the side setting embedding described upper die forming block.