Stamping and blanking die for left and right parts of automobile longitudinal beam raw material

Abstract

The invention discloses a stamping and blanking die for automobile longitudinal beam raw material left and right parts, which is characterized in that a first thrusting cutter block is arranged at the position, corresponding to the outer side of a triangular tip of a workpiece left part raw material plate finished product, on a first station on an upper die holder of the die, and a first thrusting die button matched with the first thrusting cutter block is arranged on a lower die holder; due to the fact that the first thrusting die button is provided with the ribbing groove in the side, close to the left workpiece, of the thrusting notch, a ribbing process is added in a waste area of a product, cracking of a triangular area due to large extension amount can be avoided during follow-up forming, and the yield of the product is improved. And after forming, the convex rib part can be cut off, so that the problem of cracking of a left workpiece product is solved, and the yield is improved. And the die structure can reduce the blanking gap between the left workpiece and the right workpiece to the minimum without worrying about cracks on the workpieces, so that the utilization rate of plates is greatly improved.

Description

Technical Field

[0001] The invention relates to a stamping die, in particular to a stamping die for left and right parts of a raw material of an automobile longitudinal beam. Background Art

[0002] The left and right parts of the automobile longitudinal beam structure are as follows Figure 1 , 2 As shown, the triangular part on the left part of the workpiece needs to be punched into a more complex profile. Since this part is deformed greatly, any tiny crack on the raw material sheet will cause the finished product to crack. The existing blanking die is a one-time trimming for the entire circumference. When punching the workpiece, the triangular part on the left part of the workpiece cannot avoid cracks due to its sharp shape. As a result, when the left part of the workpiece is produced in the subsequent process, the product cracks frequently in the triangular part, affecting product quality and increasing manufacturing costs. In addition, since the problem of cracks cannot be avoided when blanking the left part of the workpiece, the distance between the left part of the workpiece and the right part of the workpiece needs to be set larger to avoid affecting the material plate of the right part of the workpiece, thereby making the blanking rate of the sheet lower and causing waste of raw materials. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a stamping die for automobile longitudinal beam raw materials which can improve the raw material utilization rate and the yield rate.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a stamping die for left and right parts of automobile longitudinal beam raw materials, including an upper die base and a lower die base, the upper die base is provided with a mounting groove, and the mounting groove is provided with six stations, wherein the first station, the third station, the fourth station, and the sixth station are working stations;

[0005] A first punching knife block is provided on the upper die seat at a position corresponding to the outer side of the triangular tip of the finished raw material plate of the left workpiece at the first station, and a first punching die button matched with the first punching knife block is provided on the lower die seat, and a rib groove is provided on the first punching die button at the side of the punching notch close to the left workpiece; a pair of left-part positioning punches for punching the middle positioning hole of the left workpiece are provided on the upper die seat at the first station; a first floating support plate is mounted on the lower die seat at the first station and the second station, and an avoidance hole for avoiding the first punching knife block is provided on the first floating support plate; a pair of left-part positioning die buttons matched with the left-part positioning punches are provided on the lower die seat at the first station;

[0006] A second mounting seat is provided on the third station of the upper die seat, and a left upper cutting knife block group is provided on the second mounting seat for punching and cutting the outer periphery of the left part of the workpiece except the triangular part; a first blanking trough is provided on the third station of the lower die seat, and a left lower cutting knife block group is provided around the outer periphery of the notch of the first blanking trough except the position corresponding to the first punching notch to cooperate with the left upper cutting knife block group;

[0007] A pair of right-piece positioning punches for punching the middle positioning hole of the right piece of the workpiece are provided on the upper die seat at the fourth station; a pair of right-piece positioning die buttons matching with the right-piece positioning punches are provided on the lower die seat at the fourth station; a second floating support plate is provided on the lower die seat at the fifth station through a plurality of nitrogen springs; a right-piece upper punching knife block for punching the right piece of the workpiece is provided on the upper die seat at the sixth station; a second blanking trough is provided on the lower die seat at the sixth station, and a right-piece lower punching knife block matching with the right-piece upper punching knife block is provided around the notch of the second blanking trough;

[0008] A floating press plate is provided on the upper die seat through a number of nitrogen springs; a first avoidance hole is provided on the floating press plate for avoiding the first cutting knife block, a rib protrusion matching the rib groove is provided on the side of the first avoidance hole close to the left part of the workpiece on the floating press plate, a second avoidance hole is provided on the floating press plate for avoiding the cutting knife block group on the left part, a third avoidance hole is provided on the floating press plate for avoiding the cutting knife block group on the right part, and avoidance holes are also provided on the floating press plate for avoiding each side positioning punch, the left part positioning punch, and the right part positioning punch.

[0009] As a preferred solution, the first floating support plate is provided with a plurality of positioning guide keys near the third workstation, and the lower cutting knife block of the left piece is provided with guide grooves matching with the positioning guide keys.

[0010] As a preferred solution, a plurality of positioning guide keys are provided on both sides of the second floating support plate, and guide grooves matching with the positioning guide keys are provided on the left cutting knife block group and the right lower cutting knife block.

[0011] As a preferred solution, the upper die base is provided with two pairs of side positioning punches for punching side positioning holes in the raw material plate on the edge of the first workstation; the lower die base is provided with side positioning mold buttons respectively matching with each side positioning punch at the first workstation; and the upper die base is provided with two pairs of workpiece positioning pins matching with the positions of the side positioning punches at the third workstation and the sixth workstation respectively.

[0012] As a preferred solution, a pair of inclined discharge slide rails are respectively provided on the lower die base at the bottom of the first blanking chute and the bottom of the second blanking chute.

[0013] The beneficial effects of the present invention are:

[0014] Since the upper die seat is provided with a first punching knife block at the position corresponding to the outer side of the triangular tip of the finished product of the left raw material sheet of the workpiece at the first station, and the lower die seat is provided with a first punching die button matched with the first punching knife block, the peripheral stress of the left workpiece is reduced during subsequent blanking, thereby avoiding the appearance of fine cracks at the triangular tip, and since the first punching die button is provided with a rib groove on the side of the punching notch close to the left workpiece, a rib pressing process is added to the waste area of ​​the product, and the triangular area can be prevented from cracking due to large extension during subsequent molding, and the rib part can be cut off after molding, thereby solving the problem of cracking of the left workpiece product and improving the yield rate. In addition, the mold structure can minimize the blanking gap between the left workpiece and the right workpiece without worrying about cracks on the workpiece, greatly improving the utilization rate of the sheet material and reducing the production cost.

[0015] Since the first floating support plate is provided with a plurality of positioning guide keys near the third workstation, the lower cutting knife block of the left piece is provided with guide grooves matching with the positioning guide keys, and the two sides of the second floating support plate are provided with a plurality of positioning guide keys, the left cutting knife block group and the lower cutting knife block of the right piece are provided with guide grooves matching with the positioning guide keys, so that the transmission of the workpiece is smoother.

[0016] Because the upper die base is provided with two pairs of side positioning punches on the edge of the first workstation for punching side positioning holes in the raw material plate; the lower die base is provided with side positioning mold buttons which respectively match the side positioning punches at the first workstation; and the upper die base is provided with two pairs of workpiece positioning pins which match the positions of the side positioning punches at the third workstation and the sixth workstation respectively.

[0017] Since the lower die seat is provided with a pair of inclined discharging slide rails at the bottom of the first blanking trough and the bottom of the second blanking trough, the punched materials can be delivered more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the finished product structure of the left workpiece.

[0019] Figure 2 Schematic diagram of the upper die structure.

[0020] Figure 3 It is a schematic diagram of the lower mold structure.

[0021] Figure 4 This is a schematic diagram of the processing contents of each process of this mold.

[0022] In the figure: 1 upper die seat, 2 lower die seat, 3 first punching knife block, 4 first punching die button, 5 rib pressing groove; 6 left piece positioning punch; 7 first floating support plate, 8 left piece positioning die button; 9 second mounting seat, 10 left piece upper cutting knife block group; 11 left piece lower cutting knife block group; 12 discharge slide rail;

[0023] 13 positioning guide key, 14 right part positioning punch; 15 right part positioning die button; 16 second floating support plate; 17 right part upper punching knife block; 18 right part lower punching knife block; 19 floating pressure plate; 20 rib protrusion, 21 side positioning punch; 22 side positioning die button; 23 workpiece positioning pin. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-4 As shown, a stamping die for left and right parts of a longitudinal beam of an automobile comprises an upper die base 1 and a lower die base 2. The upper die base 1 is provided with a mounting groove, and six stations are provided in the mounting groove, wherein the first station, the third station, the fourth station, and the sixth station are working stations;

[0026] A first punching knife block 3 is provided on the upper die base 1 at a position corresponding to the outer side of the triangular tip of the finished raw material plate of the left workpiece at the first station, and a first punching die button 4 matched with the first punching knife block 3 is provided on the lower die base 2, and a rib groove 5 is provided on the first punching die button 4 at the side of the punching notch close to the left workpiece; a pair of left-piece positioning punches 6 for punching the middle positioning hole of the left workpiece are provided on the upper die base 1 at the first station; a first floating support plate 7 is mounted on the lower die base 2 at the first station and the second station, and an avoidance hole for avoiding the first punching knife block 3 is provided on the first floating support plate 7; a pair of left-piece positioning die buttons 8 matched with the left-piece positioning punch 6 are provided on the lower die base 2 at the first station;

[0027] A second mounting seat 9 is provided on the upper die seat 1 at the third station, and a left-part upper cutting knife block group 10 is provided on the second mounting seat 9 for punching and cutting the remaining periphery of the left part of the workpiece except the triangular part; a first blanking trough is provided on the lower die seat 2 at the third station, and a left-part lower cutting knife block group 11 is provided on the outer periphery of the notch of the first blanking trough except the position corresponding to the first punching notch for cooperating with the left-part upper cutting knife block group 10; a pair of inclined discharge slide rails 12 are provided on the lower die seat 2 at the bottom of the first blanking trough.

[0028] The first floating support plate 7 is provided with a plurality of positioning guide keys 13 near the third station, and the lower cutting knife block of the left piece is provided with guide notches matching with the positioning guide keys 13 .

[0029] A pair of right-part positioning punches 14 for punching the middle positioning hole of the right part of the workpiece are provided on the upper die base 1 at the fourth station; a pair of right-part positioning mold buttons 15 cooperating with the right-part positioning punches 14 are provided on the lower die base 2 at the fourth station; a second floating support plate 16 is provided on the lower die base 2 at the fifth station through a plurality of nitrogen springs; a right-part upper punching knife block 17 for punching the right part of the workpiece is provided on the upper die base 1 at the sixth station; a second blanking trough is provided on the lower die base 2 at the sixth station, and a right-part lower punching knife block 18 cooperating with the right-part upper punching knife block 17 is provided around the notch of the second blanking trough; a pair of inclined discharge slide rails 12 are provided on the lower die base 2 at the bottom of the second blanking trough.

[0030] A plurality of positioning guide keys 13 are provided on both sides of the second floating support plate 16 , and guide notches matching with the positioning guide keys 13 are provided on the left cutting blade block assembly and the right lower cutting blade block.

[0031] A floating pressure plate 19 is provided on the upper die base 1 through a plurality of nitrogen springs; the floating pressure plate 19 is provided with a first avoidance hole for avoiding the first cutting blade block 3, the floating pressure plate 19 is provided with a rib protrusion 20 matching the rib groove 5 on the side of the first avoidance hole close to the left part of the workpiece, the floating pressure plate 19 is provided with a second avoidance hole for avoiding the cutting blade block group 10 on the left part, the floating pressure plate 19 is also provided with a third avoidance hole for avoiding the cutting blade block group on the right part, and the floating pressure plate 19 is also provided with avoidance holes for avoiding each side positioning punch 21, the left part positioning punch 6, and the right part positioning punch 14.

[0032] The upper die base 1 is provided with two pairs of side positioning punches 21 on the edge of the first station for punching side positioning holes in the raw material plate; the lower die base 2 is provided with side positioning buttons 22 respectively matched with each side positioning punch 21 at the first station; the upper die base 1 is provided with two pairs of workpiece positioning pins 23 matching with the positions of the side positioning punches 21 at the third station and the sixth station respectively.

[0033] During the punching process, the upper die seat 1 is pressed down by the equipment pressure. The floating pressure plate 19 is used to press the material plate first, and then the upper die parts move downward, and the product punching work is completed synchronously with the lower die working parts. When the equipment reaches the set parameters, it returns to complete a single punching work of the product.

[0034] The above-mentioned embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A stamping die for left and right parts of automobile longitudinal beam raw materials, comprising an upper die seat and a lower die seat, wherein the upper die seat is provided with a mounting groove, characterized in that: Six stations are arranged in the installation groove, among which the first station, the third station, the fourth station and the sixth station are working stations; a first punching knife block is arranged on the upper die seat at the position corresponding to the outer side of the triangular tip of the finished raw material plate of the left piece of the workpiece at the first station, and a first punching die button matched with the first punching knife block is arranged on the lower die seat, and a rib groove is arranged on the first punching die button on the side of the punching notch close to the left piece of the workpiece; a pair of left-piece positioning punches for punching the middle positioning hole of the left piece of the workpiece are arranged on the upper die seat at the first station; a first floating support plate is mounted on the lower die seat at the first station and the second station, and a avoidance hole is arranged on the first floating support plate for avoiding the first punching knife block; a pair of left-piece positioning die buttons matched with the left-piece positioning punches are arranged on the lower die seat at the first station; A second mounting seat is provided on the third station of the upper die seat, and a left upper cutting knife block group is provided on the second mounting seat for punching and cutting the outer periphery of the left part of the workpiece except the triangular part; a first blanking trough is provided on the third station of the lower die seat, and a left lower cutting knife block group is provided around the outer periphery of the notch of the first blanking trough except the position corresponding to the first punching notch to cooperate with the left upper cutting knife block group; A pair of right-piece positioning punches for punching the middle positioning hole of the right piece of the workpiece are provided on the upper die seat at the fourth station; a pair of right-piece positioning die buttons matching with the right-piece positioning punches are provided on the lower die seat at the fourth station; a second floating support plate is provided on the lower die seat at the fifth station through a plurality of nitrogen springs; a right-piece upper punching knife block for punching the right piece of the workpiece is provided on the upper die seat at the sixth station; a second blanking trough is provided on the lower die seat at the sixth station, and a right-piece lower punching knife block matching with the right-piece upper punching knife block is provided around the notch of the second blanking trough; A floating press plate is provided on the upper die seat through a number of nitrogen springs; a first avoidance hole is provided on the floating press plate for avoiding the first cutting knife block, a rib protrusion matching the rib groove is provided on the side of the first avoidance hole close to the left part of the workpiece on the floating press plate, a second avoidance hole is provided on the floating press plate for avoiding the cutting knife block group on the left part, a third avoidance hole is provided on the floating press plate for avoiding the cutting knife block group on the right part, and avoidance holes are also provided on the floating press plate for avoiding each side positioning punch, the left part positioning punch, and the right part positioning punch.

2. A stamping die for left and right parts of a longitudinal beam of an automobile as claimed in claim 1, characterized in that: The first floating support plate is provided with a plurality of positioning guide keys near the third station, and the lower cutting knife block of the left piece is provided with guide notches matching with the positioning guide keys.

3. The stamping die for the left and right parts of the automobile longitudinal beam raw material according to claim 1, characterized in that: A plurality of positioning guide keys are arranged on both sides of the second floating support plate, and guide notches matching with the positioning guide keys are arranged on the left cutting blade block group and the right lower cutting blade block.

4. The stamping die for the left and right parts of the automobile longitudinal beam raw material according to claim 1, characterized in that: The upper die base is provided with two pairs of side positioning punches for punching side positioning holes in the raw material plate at the edge of the first station; the lower die base is provided with side positioning mold buttons respectively matched with each side positioning punch at the first station; the upper die base is provided with two pairs of workpiece positioning pins matching with the positions of the side positioning punches at the third station and the sixth station respectively.

5. A stamping die for left and right parts of a longitudinal beam of an automobile as claimed in any one of claims 1 to 4, characterized in that: The lower die seat is provided with a pair of inclined discharging slide rails at the bottom of the first blanking chute and the bottom of the second blanking chute respectively.

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