CN212577317U

CN212577317U - Automobile part stamping die

Info

Publication number: CN212577317U
Application number: CN202020473481.9U
Authority: CN
Inventors: 洪政平
Original assignee: Tianjin Nuoruixin Precision Electronic Co ltd
Current assignee: Tianjin Nuoruixin Precision Electronic Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-02-23
Anticipated expiration: 2030-04-03

Abstract

The utility model provides an automobile part stamping die, including last mould piece, bed die base, terrace die, spacing ejector pin, stopper, one-level slider, second grade slider, one-level pneumatic cylinder, second grade pneumatic cylinder, crimp pneumatic cylinder, correcting rod and top pneumatic cylinder group one-level slider, it is provided with the terrace die to go up mould piece bottom, it is provided with spacing ejector pin to go up mould piece bottom left and right sides, the bed die piece is installed to bed die base top, be provided with first pneumatic cylinder in the middle of the bed die base is inside, the one-level pneumatic cylinder left and right sides is provided with the second grade pneumatic cylinder, be provided with the die in the middle of the bed die piece top, the die bottom is provided with the one-level slider, the one-level slider left and right sides is provided with the crimp pneumatic cylinder, install the correcting rod in, the plate can be effectively subjected to multistage buffering and pressurization correction bending through the first-stage sliding block, the second-stage sliding block and the female die.

Description

Automobile part stamping die

Technical Field

The utility model relates to a stamping die field especially relates to an auto parts stamping die.

Background

The stamping die is a special process equipment for processing materials into parts or semi-finished products in cold stamping processing, and is called as a cold stamping die. Stamping is a press working method in which a die mounted on a press is used to apply pressure to a material at room temperature to cause separation or plastic deformation of the material, thereby obtaining a desired part.

Stamping die is mostly needed in the forming of the sheet metal part of an automobile body, the stamping of a common stamping die is likely to be simple in structure, but automobile parts are often complex in structure and have more inclined planes and bending planes, a workpiece with the bending plane can be subjected to bending resilience after stamping, when the workpiece is stamped, a plate generates plastic deformation and elastic deformation, after external load is removed, the plastic deformation is reserved, the elastic deformation recovers the original shape, the size of the workpiece is inconsistent with the size of the die, and the phenomenon is called bending resilience.

The existing bending resilience coping methods are very many, a common bending correction method is used for processing workpieces, the bending correction force concentrates the punching force in a bending deformation area, metal of an inner metal layer is forced to be extruded, and after the plate is corrected, fibers of the inner layer and the outer layer are stretched and are shortened after being unloaded. Because the rebound tendency of the inner layer and the outer layer is opposite, the rebound amount is reduced, thereby achieving the purpose of overcoming or reducing the rebound.

But current stamping die who has the correction bending function is applicable to the simple mould that has single curved surface basically, does not have the stamping die who is applicable to the more complicated part of curved surface, and current auto parts stamping die panel can shorten length in the stamping process to the edge can the perk, if do not have stop device can lead to the shape after the panel punching press not to accord with the regulation size, the crooked resilience phenomenon at the edge of panel is more obvious after current auto parts stamping die punching press, and current mould can't solve this type of problem.

Disclosure of Invention

According to the technical problems, the utility model provides an automobile part stamping die, which is characterized by comprising an upper die block, a lower die base, a convex die, a concave die, a limiting ejector rod, a limiting block, a first-level slider, a second-level slider, a first-level hydraulic cylinder, a second-level hydraulic cylinder, a bending hydraulic cylinder, a correcting rod and a top hydraulic cylinder, wherein the bottom of the upper die block is provided with the convex die, the left side and the right side of the bottom of the upper die block are respectively provided with the limiting ejector rod, the left side and the right side of the inside of the upper die block are respectively provided with the top hydraulic cylinder, the limiting ejector rod passes through the upper die block and is installed in the top hydraulic cylinder, the left side and the right side of the bottom of the upper die block are respectively provided with a limiting hole, the, the middle of the top of the lower die block is provided with a female die, the middle of the bottom of the female die is provided with a primary slide block, the left side and the right side of the primary slide block are respectively provided with a secondary slide block, the primary slide block is connected with a primary hydraulic cylinder through a hydraulic rod, the secondary slide block is connected with a secondary hydraulic cylinder through a hydraulic rod, the left side and the right side of the top of the lower die block are respectively provided with a limiting block, the left side and the right side of the female die are provided with a flanging hydraulic cylinder;

the bottom of the limiting ejector rod is provided with a pressing pulley, the pressing pulley is installed at the bottom of the limiting ejector rod through a rotating shaft, the bottom of the male die is a first bending surface, the oblique upper parts of the left side and the right side of the first bending surface are first inclined surfaces, the oblique upper part of the outer side of the first inclined surface is a second bending surface, the outer side of the second bending surface is a first plane, the outer side of the first plane is a third bending surface, a vertical surface is arranged above the third bending surface, a first heating block is arranged in the male die at the position of the first bending surface, a second heating block is arranged in the male die at the position of the second bending surface, and a third heating block is arranged in the male die at the position of the third bending;

the top of the first-stage sliding block is a concave surface matched with the first bending surface, the inner side of the second-stage sliding block is a second inclined surface matched with the first inclined surface, the top of the second-stage sliding block is a second plane matched with the first plane, a fourth bending surface matched with the second bending surface is arranged between the second inclined surface and the second plane, a fifth bending surface matched with the third bending surface is arranged at a female die at the outer side of the second-stage sliding block, and a third inclined surface is arranged obliquely above the fifth bending surface;

the hydraulic control system is characterized in that the first-stage hydraulic cylinder, the second-stage hydraulic cylinder, the flanging hydraulic cylinder and the top hydraulic cylinder are connected with an external hydraulic oil tank, the first-stage hydraulic cylinder, the second-stage hydraulic cylinder, the flanging hydraulic cylinder and the top hydraulic cylinder are connected with an external power supply, and the first-stage hydraulic cylinder, the second-stage hydraulic cylinder, the flanging hydraulic cylinder and the top hydraulic cylinder are connected with an external numerical control system.

The utility model has the advantages that:

1. the utility model is suitable for a punching press of the more complicated part of crooked face can effectively carry out multistage buffering and pressurization correction bending to panel through one-level slider, second grade slider and die.

2. The utility model discloses a stopper can control spacingly to panel, the utility model discloses a spacing ejector pin can carry out top one-level edge spacing to panel, in stamping process, panel can contract to the centre and lead to about both ends length shorten, the pulley that compresses tightly of spacing ejector pin bottom can be in spacing when compressing tightly panel, let panel remove, prevent the perk of panel edge simultaneously, at the in-process that pushes down of last mould piece, outside numerical control system control top pneumatic cylinder makes the shrink of spacing ejector pin, the distance of shrink is the same with the distance that last mould piece pushed down all the time, can not cause the damage of great dynamics to panel when guaranteeing that spacing ejector pin compresses tightly panel.

3. The utility model discloses finishing at the panel punching press back, the crimp pneumatic cylinder drives the vertical face of the tight roof of panel promotion top to the terrace die of edge, then drives the correcting lever and withdraws, marginal panel kick-backs to laminating with the fifth curved surface, and excessive bending can take place for marginal panel like this, and is bigger than original bending degree, and the angle that the curved surface of panel edge warp is greater than the deformation angle of demand, and the crooked resilience angle of marginal panel after kick-backing like this is littleer, accords with the numerical value of theoretical requirement more.

4. The utility model discloses the crooked face department of terrace die all is provided with the heating block, can make the panel temperature of flexure department rise like this when crooked panel, has increaseed the mobility and the extensibility of panel, and the panel resilience volume after making the punching press crooked is littleer.

Drawings

Fig. 1 is a sectional view of a front view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

fig. 4 is a schematic view of the present invention in a ready state;

fig. 5 is a schematic view of the present invention in a first depressed state;

fig. 6 is a schematic view of the present invention in a second depressed state;

fig. 7 is a schematic view of the present invention in a third depressed state;

fig. 8 is a schematic view of the present invention in an edge bending state;

fig. 9 is a structural diagram of the punched plate of the present invention.

As shown in the figure: 1-an upper die block, 2-a lower die block, 3-a lower die base, 4-a male die, 5-a female die, 6-a limiting ejector rod, 7-a limiting block, 8-a primary slide block, 9-a secondary slide block, 10-a primary hydraulic cylinder, 11-a secondary hydraulic cylinder, 12-a crimping hydraulic cylinder, 13-a correcting rod, 14-a top hydraulic cylinder, 15-a limiting hole, 16-a first bending surface, 17-a first inclined surface, 18-a second bending surface, 19-a first plane, 20-a third bending surface, 21-a vertical surface, 22-a first heating block, 23-a second heating block, 24-a third heating block, 25-a concave surface, 26-a second inclined surface, 27-a second plane, 28-a fourth bending surface, 29-a fifth bending surface, 30-third inclined surface, 31-pressing pulley and 32-plate.

Detailed Description

Example 1

The utility model provides an automobile part stamping die, which is characterized by comprising an upper die block 1, a lower die block 2, a lower die base 3, a convex die 4, a concave die 5, a limiting ejector rod 6, a limiting block 7, a first-stage slider 8, a second-stage slider 9, a first-stage hydraulic cylinder 10, a second-stage hydraulic cylinder 11, a crimping hydraulic cylinder 12, a correcting rod 13 and a top hydraulic cylinder 14, wherein the convex die 4 is arranged at the bottom of the upper die block 1, the limiting ejector rods 6 are respectively arranged at the left side and the right side of the bottom of the upper die block 1, the top hydraulic cylinders 14 are respectively arranged at the left side and the right side of the inner part of the upper die block 1, the limiting ejector rods 6 are arranged in the top hydraulic cylinders 14 after passing through the upper die block 1, the limiting holes 15 are respectively arranged at the left side and the right side of the bottom of the upper die block, the middle of the top of the lower die block 2 is provided with a female die 5, the middle of the bottom of the female die 5 is provided with a primary slide block 8, the left side and the right side of the primary slide block 8 are respectively provided with a secondary slide block 9, the primary slide block 8 is connected with a primary hydraulic cylinder 10 through a hydraulic rod, the secondary slide block 9 is connected with a secondary hydraulic cylinder 11 through a hydraulic rod, the left side and the right side of the top of the lower die block 2 are respectively provided with a limiting block 7, the left side and the right side of the female die 5 are provided with;

the bottom of the limiting ejector rod 6 is provided with a pressing pulley 31, the pressing pulley 31 is installed at the bottom of the limiting ejector rod 6 through a rotating shaft, the bottom of the male die 4 is a first bending surface 16, the oblique upper parts of the left side and the right side of the first bending surface 16 are first inclined surfaces 17, the oblique upper parts of the outer sides of the first inclined surfaces 17 are second bending surfaces 18, the second bending outer sides are first planes 19, the outer sides of the first planes 19 are third bending surfaces 20, vertical surfaces 21 are arranged above the third bending surfaces 20, the male die 4 at the first bending surface 16 is internally provided with a first heating block 22, the male die 4 at the second bending surface 18 is internally provided with a second heating block 23, and the male die 4 at the third bending surface 20 is internally provided with a third heating block 24;

the top of the first-stage sliding block 8 is a concave surface 25 matched with the first bending surface 16, the inner side of the second-stage sliding block 9 is a second inclined surface 26 matched with the first inclined surface 17, the top of the second-stage sliding block 9 is a second plane 27 matched with the first plane 19, a fourth bending surface 28 matched with the second bending surface 18 is arranged between the second inclined surface 26 and the second plane 27, a fifth bending surface 29 matched with the third bending surface 20 is arranged at the position of the female die 5 at the outer side of the second-stage sliding block 9, and a third inclined surface 30 is arranged obliquely above the fifth bending surface 29;

the primary hydraulic cylinder 10, the secondary hydraulic cylinder 11, the crimping hydraulic cylinder 12 and the top hydraulic cylinder 14 are connected with an external hydraulic oil tank, the primary hydraulic cylinder 10, the secondary hydraulic cylinder 11, the crimping hydraulic cylinder 12 and the top hydraulic cylinder 14 are connected with an external power supply, and the primary hydraulic cylinder 10, the secondary hydraulic cylinder 11, the crimping hydraulic cylinder 12 and the top hydraulic cylinder 14 are connected with an external numerical control system.

Example 2

When the utility model is used, a plate 32 is placed between the left and right limiting blocks 7 above the female die 5, the primary hydraulic cylinder 10 and the secondary hydraulic cylinder 11 push the primary slider 8 and the secondary slider 9 to rise to the preparation state position shown in figure 4, then the external hydraulic rod pushes the upper die block 1 to press down and drives the male die 4 to press down to the first pressing state shown in figure 5, the pressing pulley 31 at the bottom of the limiting ejector rod 6 presses the plate 32 tightly, then the primary hydraulic cylinder 10 keeps the primary slider 8 still and the upper die block 1 continues to press down, under the action of the first heating block 22, the first bending surface 16 at the bottom of the male die 4 presses down the plate 32 and tightly adheres to the concave surface 25 at the top of the primary slider 8 to form a bending surface, then the upper die block 1 continues to press down the plate 32, the primary slider 8 moves down to the second pressing state shown in figure 6 under the action of the primary hydraulic cylinder 10, then the first-stage hydraulic cylinder 10 and the second-stage hydraulic cylinder 11 keep the first-stage slide block 8 and the second-stage slide block 9 still and the upper die block 1 continues to press downwards, at this time, the first inclined surface 17 of the male die 4 presses downwards to enable the plate 32 to be attached to the second inclined surface 26 of the second-stage slide block 9, under the action of the second heating block 23, the second bending surface 18 of the male die 4 presses downwards to enable the plate 32 to be attached to the fourth bending surface 28 of the second-stage slide block 9 to form a bending surface, the upper die block 1 continues to press downwards, the first-stage slide block 8 and the second-stage slide block 9 move downwards under the action of the first-stage hydraulic cylinder 10 and the second-stage hydraulic cylinder 11 to a third pressing state shown in fig. 7, the limiting block 7 is inserted into the limiting hole 15, under the action of the third heating block 24, the third bending surface 20 of the male die 4 presses downwards to enable the plate 32 to be attached to the fifth bending surface 29 to form a bending surface, then the bending hydraulic cylinder 12 drives the correcting rod 13 to retract, the edge of the plate 32 rebounds to be attached to the third inclined surface 30, finally the external hydraulic rod drives the upper die block 1 to ascend, and the first-stage hydraulic rod and the second-stage hydraulic rod drive the first-stage sliding block 8 and the second-stage sliding block 9 to ascend to eject a formed workpiece, so that punching is completed.

In the process of pressing down the upper die block 1, the top hydraulic cylinder 14 is controlled by the external numerical control system to enable the limiting ejector rod 6 to shrink, the shrinking distance is the same as the pressing-down distance of the upper die block 1 all the time, and the limiting ejector rod 6 is guaranteed not to damage the plate 32 due to large force while pressing the plate 32.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A stamping die for automobile parts is characterized by comprising an upper die block, a lower die base, a male die, a female die, limiting ejector rods, limiting blocks, a primary sliding block, a secondary sliding block, a primary hydraulic cylinder, a secondary hydraulic cylinder, a flanging hydraulic cylinder, a correcting rod and a top hydraulic cylinder, wherein the male die is arranged at the bottom of the upper die block, the limiting ejector rods are respectively arranged at the left side and the right side of the bottom of the upper die block, the top hydraulic cylinders are respectively arranged at the left side and the right side of the inner part of the upper die block, the limiting ejector rods penetrate through the upper die block and are installed in the top hydraulic cylinders, the lower die block is installed above the lower die base, a first hydraulic cylinder is arranged in the middle of the inner part of the lower die base, the secondary hydraulic cylinders are respectively arranged, the left side and the right side of the first-stage sliding block are respectively provided with a second-stage sliding block, the first-stage sliding block is connected with a first-stage hydraulic cylinder through a hydraulic rod, the left side and the right side of the female die are provided with a bending hydraulic cylinder, and a correcting rod is arranged in the bending hydraulic cylinder;

the bottom of the male die is a first bending surface, the oblique upper parts of the left side and the right side of the first bending surface are first inclined surfaces, the oblique upper part of the outer side of the first inclined surface is a second bending surface, the outer side of the second bending surface is a first plane, the outer side of the first plane is a third bending surface, a vertical surface is arranged above the third bending surface, a first heating block is arranged in the male die at the first bending surface, a second heating block is arranged in the male die at the second bending surface, and a third heating block is arranged in the male die at the third bending surface;

the first-stage sliding block top is a concave surface matched with the first bending surface, the inner side of the second-stage sliding block is a second inclined surface matched with the first inclined surface, the top of the second-stage sliding block is a second plane matched with the first plane, a fourth bending surface matched with the second bending surface is arranged between the second inclined surface and the second plane, a fifth bending surface matched with the third bending surface is arranged at the position of a female die on the outer side of the second-stage sliding block, and the third inclined surface is arranged above the fifth bending surface.

2. The automobile part stamping die according to claim 1, wherein the left and right sides of the bottom of the upper die block are respectively provided with a limiting hole, the secondary slide block is connected with the secondary hydraulic cylinder through a hydraulic rod, and the left and right sides of the top of the lower die block are respectively provided with a limiting block.

3. The automobile part stamping die according to claim 1, wherein the bottom of the limiting ejector rod is provided with a pressing pulley, and the pressing pulley is mounted at the bottom of the limiting ejector rod through a rotating shaft.

4. The automobile part stamping die according to claim 1, wherein the primary hydraulic cylinder, the secondary hydraulic cylinder, the crimping hydraulic cylinder and the top hydraulic cylinder are connected with an external hydraulic oil tank, the primary hydraulic cylinder, the secondary hydraulic cylinder, the crimping hydraulic cylinder and the top hydraulic cylinder are connected with an external power supply, and the primary hydraulic cylinder, the secondary hydraulic cylinder, the crimping hydraulic cylinder and the top hydraulic cylinder are connected with an external numerical control system.