Forming die for front axle wing plate of mine truck

Abstract

The utility model discloses a forming die for a front axle wing plate of a mine truck. The forming die consists of an upper die and a lower die, the die is characterized in that the upper die is composed of an upper die base and a male die insert set; the lower die is composed of a lower die base, a female die insert set, a positioning device, a guiding device and an ejection device. The female die insert group and the male die insert group are mounted on the die holder to press a wing plate blank into a required shape; the positioning device is installed on the female die insert set to achieve plate positioning. The guide device is mounted on the lower die holder to ensure the position precision when the upper die moves downwards; the ejection device is installed on the lower die base to achieve feeding and discharging of workpieces. Different concave-convex inserts are matched with other assemblies to achieve wing plate forming, and the forming precision is improved; the die structure of the insert can be flexibly replaced and controlled, the upper die and the lower die are driven by a hydraulic machine to press and form the wing plate blank at a time, efficiency is high, the automation degree is high, product consistency is good, product size precision is high, and the die service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile axle manufacturing, in particular to a forming die for a front axle wing plate of a mining vehicle. Background Art

[0002] The front axle foundation support frame of the front axle of the mining truck is welded and connected by two wing panels and two side panels. The wing panel is a bent part with a total of 4 bends, and the thickness is ≥18mm, the forming fillet is ≥R100, the forming angle is ≥130°, and the forming pressure is above 600 tons. The general bending machine does not meet the pressure requirements. At present, more than 800 tons of punch presses are used for bending. The mold uses a single-angle mold. It takes 4 bends to press a wing panel. The weight of the wing panel is generally more than 80 kilograms. The operator needs to flip it many times, which increases the labor intensity and the overall work. The time is long, and it is impossible to achieve mass production and automation; the position accuracy of the upper die stop point of each bend of the ordinary hydraulic punch is low, and the consistency of each bend cannot be guaranteed; the punching speed is fast, the sheet is in a free state during bending, and the upper die moves down quickly, and the two ends of the sheet under force will quickly rise, posing a safety hazard; the length of the wing plate is generally ≥2200mm, and the width is 190mm-210mm. Long and narrow materials will bend and deform to a certain extent after cutting. The single-angle mold does not have a leveling function and cannot guarantee the flatness of the wing plate. In short, the traditional single-angle mold has low efficiency in pressing wing plates, high labor intensity, safety hazards, poor consistency in wing plate size, and the problem of wing plate deformation cannot be solved. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a molding die for the front axle wing plate of a mining vehicle.

[0004] The technical solution provided by the utility model is: a forming die for the front axle wing plate of a mining vehicle, which is composed of an upper and lower die; the special feature is that the upper die is composed of an upper die seat and a male die insert group; the lower die is composed of a lower die seat, a female die insert group, a positioning device, a guiding device, and an ejection device;

[0005] The punch insert group consists of a first punch insert, a second punch insert, a third punch insert, and a fourth punch insert. The first punch insert, the second punch insert, the third punch insert, and the fourth punch insert are two in number. The first punch insert and the fourth punch insert are fixed on the upper die seat, and the second punch insert and the third punch insert are fixed in a groove reserved on the fourth punch insert.

[0006] The die insert group is composed of a first die insert, a second die insert, a third die insert, and a fourth die insert. The first die insert, the second die insert, the third die insert, and the fourth die insert are two in number. The first die insert and the fourth die insert are fixed on the lower die base, and the second die insert and the third die insert are fixed in a groove reserved on the first die insert.

[0007] The positioning device is composed of a positioning pin and an end positioning device; there are two positioning pins, which are respectively installed in the pin holes reserved on the two first concave mold inserts; the end positioning device is fixed to the side surface of any one of the first concave mold inserts;

[0008] The guide device is composed of at least four guide columns, and the guide columns are fixed on both sides of the lower die base;

[0009] The ejection device is composed of a supporting plate and at least three ejection rods. The supporting plate is arranged in the middle position of the lower die base, and the three ejection rods are installed in the holes reserved in the lower die base.

[0010] Furthermore, the distance between the outer end surfaces of the two first punch inserts is 180 mm shorter than the total length of the wing plate; the second punch insert is fixed at the straight section of the inclined surface of the fourth punch insert; and the third punch insert is fixed at the rounded corner position of the fourth punch insert.

[0011] Furthermore, the second die insert is fixed at the rounded corner position of the first die insert; and the third die insert is fixed at the straight section of the inclined surface of the first die insert.

[0012] Furthermore, the installation height of the guide column is 2 mm lower than the upper height of the support plate when the mold is in the ejection state.

[0013] Beneficial effects of the utility model:

[0014] 1. Four bends can be formed at one time, and the working hours are reduced to 1 / 4 of the original, which can meet the needs of mass production;

[0015] 2. With accurate positioning device, no manual marking is required during use, thus improving product dimensional accuracy;

[0016] 3. It can realize automatic loading and unloading, save transportation, avoid the safety hazards of manual handling and flipping, and reduce labor intensity;

[0017] 4. Use hydraulic press to press and form, with four bends at the same time, and improve product consistency by controlling the holding time and the pressure of the hydraulic press;

[0018] 5. With flexible and detachable rounded corner inserts and bevel inserts, the wing plate forming size can be controlled by adding or removing gaskets, which can be applied to steel plates with different rebounds;

[0019] 6. During the molding process, the support plate moves with the wing plate, which can correct the wing plate to a certain extent and improve the molding quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the mold structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the wing plate structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the wing plate blank structure of the utility model.

[0023] In the figure: 1, upper die base, 2, first punch insert, 3, second punch insert, 4, third punch insert, 5, fourth punch insert, 6, first die insert, 7, second die insert, 8, third die insert, 9, fourth die insert, 10, guide plate, 11, ejector rod, 12, support plate, 13, lower die base, 14, wing plate, 15, end positioning device, 16, positioning pin, 17, wing plate blank, 18, first bending angle, 19, second bending angle. DETAILED DESCRIPTION

[0024] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 , 2 , 3; a forming die for a front axle wing plate of a mining vehicle, comprising an upper and lower die; the upper die comprises an upper die seat 1 and a male die insert group, and the lower die comprises a lower die seat 13, a female die insert group, a positioning device, a guiding device, and an ejection device; the upper die seat 1 and the lower die seat 13 have mounting holes on their surfaces for mounting and fixing components;

[0026] The punch insert group consists of a first punch insert 2, a second punch insert 3, a third punch insert 4, and a fourth punch insert 5. The first punch insert 2, the second punch insert 3, the third punch insert 4, and the fourth punch insert 5 are each two in number, and have threaded holes on their surfaces; the split insert is used to facilitate insert replacement and improve the life of the mold; the first punch insert 2 and the fourth punch insert 5 are fixed to the upper die base 1 by bolts, and the second punch insert 3 and the third punch insert 4 are fixed to the grooves reserved on the fourth punch insert 5 by bolts; after the two first punch inserts 2 are installed on the upper die base 1, the two The outer section distance of the first punch insert 2 is 180mm shorter than the total length of the wing plate 14 after forming, and its function is to prevent the two ends of the wing plate 14 from bending other than the first bending angle 18 and the second bending angle 19 during the bending process of the sheet metal, and to ensure the parallelism between the two end planes of the wing plate 14 and the middle plane; the second punch insert 3 is fixed at the straight section position of the inclined surface of the fourth punch insert 5, and its function is to control the angle of the wing plate 14 after forming by adding or reducing the thin pad; the third punch insert 4 is fixed at the rounded corner position of the fourth punch insert 5, and its function is to control the rounded corner of the wing plate 14 after forming by adding or reducing the thin pad;

[0027] The die insert group is composed of a first die insert 6, a second die insert 7, a third die insert 8, and a fourth die insert 9. The first die insert 6, the second die insert 7, the third die insert 8, and the fourth die insert 9 are each composed of two pieces, and have threaded holes on their surfaces. The split insert is used to facilitate insert replacement and improve the life of the mold. The first die insert 6 and the fourth die insert 9 are fixed to the lower die base 13 by bolts, and the second die insert 7 and the third die insert 8 are fixed to the first die base 13 by bolts. The second die insert 7 is fixed at the rounded corner position of the first die insert 6, and its function is to control the rounded corner of the wing plate 14 after forming by adding or removing thin pads; the third die insert 8 is fixed at the straight section of the inclined surface of the first die insert 6, and its function is to control the angle of the wing plate 14 after forming by adding or removing thin pads; the second die insert 7 is made of more wear-resistant material than the other inserts, which reduces the mold scratches caused by drawing materials at both ends during the forming process of the wing plate 14, and improves the mold life;

[0028] The positioning device is composed of a positioning pin 16 and an end positioning device 15; there are two positioning pins 16 respectively installed in the pin holes reserved on the same side of the two first concave die inserts 6, and each first concave die insert 6 is installed with a positioning pin 16, which is used to control the left and right positioning to ensure that the front wing blank 17 is located in the middle of the mold in the left and right direction during the molding process; there is one end positioning device 15, which is fixed to the side surface of any first concave die insert 6 by bolts, and its function is to control the front and rear positioning to ensure that the front wing blank 17 is located in the middle of the mold in the front and rear direction during the molding process;

[0029] The guide device is composed of at least four guide columns 10, which have mounting holes on their surfaces. The guide columns 10 are fixed to both sides of the lower die seat 13 by bolts, and their function is to ensure that the upper die seat 1 and the support plate 12 do not deviate during the downward movement, and the mold is completely closed; the middle distance between the guide columns 10 on both sides of the lower die seat 13 is 4mm larger than the width of the forming part of the upper die seat 1, and the installation height of the guide columns 10 is 2mm lower than the height above the support plate 12 when the mold is in the ejection state, and their function is to facilitate loading and unloading of parts;

[0030] The ejection device consists of a support plate 12 and at least three ejector rods 11. The support plate 12 is installed in the middle position of the lower die base 13, and the three ejector rods 11 are installed in the reserved holes of the lower die base 13. Before loading, the mold is in an ejection state, and the upper surface of the support plate 12 is highly consistent with the upper surface of the first die insert 6. During the downward process of the upper die, the support plate 12 moves downward with the wing plate blank 17 and always maintains a lifting state. Its function is to ensure that the wing plate blank 17 does not deform during the forming process.

[0031] The utility model discloses a molding die for the front axle wing plate of a mining vehicle. When in use, the upper die is mounted on a hydraulic press slide, the lower die is mounted on a hydraulic press platform, and the hydraulic press is adjusted to lift the support plate 12 to the same height of the upper surfaces of the two first concave die inserts through three ejector rods 11. Figure 3 The wing plate blanks 17 shown are stacked next to the mold. The robot grabs the wing plate blanks 17 and places them on the plane formed by the two first die inserts 6 and the support plate 12; the wing plate blanks 17 are lightly tapped to make them close to the two positioning pins 16 in the left and right directions, and one end of the wing plate blank 17 is close to the end positioning device 15 in the front and back directions; after the operation is completed, the slider of the hydraulic press moves downward, and the slider drives the upper mold and the lower mold to close the mold, and the wing plate blanks 17 are pressed into wing plates 14. After maintaining the pressure for a period of time, the slider of the hydraulic press is operated to move upward, and the slider drives the upper mold away from the lower mold. At the same time, the hydraulic press is operated through three The root push rod 11 lifts the support plate 12 and the wing plate 14 to the maximum height, and the robot takes the wing plate 14 out of the mold and stacks it; checks the molding size of the wing plate 14, and flexibly chooses to add or reduce gaskets of different thicknesses on the back of the second punch insert 3, the third punch insert 4, the second die insert 7, and the third die insert 8 according to the inspection results to adjust the bending angle and the radius of the wing plate 14. After the adjustment is completed, the wing plate 14 pressed last time is put back into the mold through the robot, and pressed again until it passes the inspection. After passing the inspection, the subsequent wing plate 14 is pressed.

[0032] It should be understood that the technical features not elaborated in this specification belong to the prior art. Although the implementation methods of the utility model patent are described above in conjunction with the drawings, the utility model is not limited to the above specific implementation methods, which are only illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the utility model without departing from the scope of protection of the purpose of the utility model and the claims, which are all within the protection scope of the utility model.

Claims

1. A forming die for the front axle wing plate of a mining vehicle, consisting of an upper and lower die; characterized in that: The upper die is composed of an upper die base (1) and a male die insert group; the lower die is composed of a lower die base (13), a female die insert group, a positioning device, a guiding device, and an ejection device; The punch insert group is composed of a first punch insert (2), a second punch insert (3), a third punch insert (4), and a fourth punch insert (5); the first punch insert (2), the second punch insert (3), the third punch insert (4), and the fourth punch insert (5) are two in number each; the first punch insert (2) and the fourth punch insert (5) are fixed on the upper die base (1); the second punch insert (3) and the third punch insert (4) are fixed in a groove reserved on the fourth punch insert (5); The die insert group consists of a first die insert (6), a second die insert (7), a third die insert (8), and a fourth die insert (9); the first die insert (6), the second die insert (7), the third die insert (8), and the fourth die insert (9) are two in number each; the first die insert (6) and the fourth die insert (9) are fixed on the lower die base (13); the second die insert (7) and the third die insert (8) are fixed in a groove reserved on the first die insert (6); The positioning device is composed of a positioning pin (16) and an end positioning device (15); the positioning pins (16) are two in number and are respectively installed in pin holes reserved on the two first die inserts (6); the end positioning device (15) is fixed to the side surface of any one of the first die inserts (6); The guide device is composed of at least four guide columns (10), and the guide columns (10) are fixed on both sides of the lower die base (13); The ejection device is composed of a support plate (12) and at least three ejection rods (11); the support plate (12) is arranged in the middle of the lower die base (13); and the three ejection rods (11) are installed in holes reserved in the lower die base (13).

2. A forming die for a front axle wing plate of a mining vehicle according to claim 1, characterized in that: The distance between the outer end surfaces of the two first punch inserts (2) is 180 mm shorter than the total length of the wing plate (14); the second punch insert (3) is fixed at the straight section of the inclined surface of the fourth punch insert (5); and the third punch insert (4) is fixed at the rounded corner of the fourth punch insert (5).

3. The forming die for the front axle wing plate of a mining vehicle according to claim 1, characterized in that: The second die insert (7) is fixed at the rounded corner of the first die insert (6); and the third die insert (8) is fixed at the straight section of the inclined surface of the first die insert (6).

4. The forming die for the front axle wing plate of a mining vehicle according to claim 1, characterized in that: The installation height of the guide column (10) is 2 mm lower than the upper height of the support plate (12) when the mold is in the ejection state.

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