CN115430744A - Bending forming method for aluminum alloy bumper profile for automobile - Google Patents

Abstract

The invention discloses a bending forming method of aluminum alloy bumper profiles for automobiles, and the invention relates to the technical field of forming dies. By turning the adjusting nut, the distance between the adjusting nut and the pressing piece is shortened, at this time, the distance between the pressing piece and the matching restriction part is elongated, so that there is no meshing relationship between the matching limiting part and the tooth column, and the disengagement is realized , sliding up and down to limit the inner plate, because the limiting inner plate and the waste knife seat are connected by a connecting rod, when the sliding of the limit inner plate drives the waste knife seat to move along the direction of the guide column, and then adjust the waste knife on the waste knife seat Relative to the position on the guide column, adjust the waste knife. After the position is determined, mesh the matching restricting part with the tooth column to determine the position, and lock it through the adjustment nut. The position of the waste knife is fixed to achieve The adjustment of the position of the waste knife is convenient and simple, and there is no need to reprocess and add the mould.

Description

A kind of bending forming method of aluminum alloy bumper profile for automobile

technical field

The invention relates to the technical field of forming dies, in particular to a method for bending and forming aluminum alloy bumper profiles for automobiles.

Background technique

In the assembly parts of automobiles, bumpers are needed to ensure the safety of automobiles. During the production process of bumpers, molds are needed to shape them. Since the formed parts of bumpers are large, they need to be formed on the side. The waste material is cut to ensure that the waste material on the edge of the molding is easy to slide down. There are certain defects in the traditional molding method. Due to the fixed setting of the waste knife, the cutting position is determined. If there is no redundant installation table on the machine, the mold needs to be reprocessed and added, the steps are cumbersome and the time cost is high.

Contents of the invention

The invention provides a bending forming method of an aluminum alloy bumper profile for automobiles, which solves the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a method for bending and forming aluminum alloy bumper profiles for automobiles, comprising the following steps:

Step S1: Initially assemble and debug the mold, and assemble it;

Step S2: put the mold into the press for debugging;

Step S3: According to the data after debugging, adjust the relative position of the waste knife assembly on the lower mold base, and then press the mold for production;

Step S4: Get the product piece, and unload the mold.

As a further solution of the present invention: the step S1 specifically includes: initial assembly and debugging of the corresponding parts of the upper mold and the lower mold, adjusting the mold precision of the upper mold and the lower mold to the assembly requirements, and then performing assembly.

As a further solution of the present invention: step S2 specifically includes: hoisting the upper mold and the lower mold on the mold, first positioning and assembling the lower mold on the compacted lower bed body, and then the lower bed body enters the press, The upper bed body of the press presses down, and after the upper mold is fixed on the upper bed body, assembly and debugging are carried out.

As a further solution of the present invention: wherein step S3 specifically includes: the upper die is pressed down under the action of the upper bed body, since the end and guide sleeve on the upper die are consistent with the accuracy of the end port and guide post on the lower die, Through the rough positioning of the end and the end port, through the precise positioning of the guide sleeve and the guide post, the mold production relationship between the upper mold and the lower mold can be guaranteed, and the lower molded part on the lower mold and the upper molded part on the upper mold can be guaranteed. Carry out the bending molding of the bumper profile, the holes on the bumper profile are punched through the punch in the mold, and the edge forming forms a shear force under the action of the upper mold and the lower mold through the scrap knife assembly and the scrap knife insert , to trim and shape the edges, fine-tuning by adjusting the scrap knife assembly.

As a further solution of the present invention: wherein step S4 specifically includes: blanking the formed plate, after blanking, pressing down the upper bed body, separating the upper mold from the press, and then removing the lower bed body from the press out to complete product production.

As a further solution of the present invention: the assembly and debugging in step S2 specifically includes:

Step Y1: After turning the end pieces up, turn over the limiting column to flip and slide, so that the turning limiting column turns and slides along the direction of the turning guide plate and then gets stuck inside the limiting hole;

Step Y2: After clamping the two rotation limiting columns inside the limiting hole, the positions of the two rotation limiting columns are restricted by a limiting plate, and then the limiting plate is clamped by a clamping block.

As a further solution of the present invention: wherein the specific way of adjusting the fine-tuning of the scrap knife assembly in step S3 includes the following steps:

Step X1: Turn the adjusting nut to shorten the distance between the adjusting nut and the pressing piece, and at this time, the distance between the pressing piece and the matching restricting part is elongated, so that there is no meshing relationship between the matching restricting part and the tooth column. achieve separation;

Step X2: Slide the limit inner plate up and down, because the limit inner plate and the waste knife seat are connected by connecting rods, when the limit inner plate slides, the waste knife seat moves along the direction of the guide column, and then adjusts the waste knife seat. The waste knife is adjusted relative to the position on the guide column;

Step X3: After the position is determined, mesh the matching restricting part with the tooth column, determine the position, and lock the limit through the adjusting nut, and the position of the scrap knife is fixed.

The upper mold is set above the lower mold, and the basic structure of the mold is formed between the two. The molding of the mold product is realized through the upper mold and the lower mold. The lower mold includes the lower mold base, which is the basic body of the mold. The lower mold The two ends of the seat are provided with port ports, which realize the coarse positioning of the ports on the upper die, and guide posts are set at the inner middle of each port port for fine positioning, and the lower die seat There are connecting plates on both ends of the surface, through which the upper mold and the lower mold can be limited during transfer to prevent the position between the upper mold and the lower mold from being separated, and the four corners of the upper surface of the lower mold base are set There is a buffer rubber ring, which acts as a buffer, allowing the upper mold and the lower mold to buffer during the press, reducing the hard contact between the molds and improving the service life of the mold. The upper surface of the lower mold base The upper part is fixed with the lower forming part, which is the key part of the profile forming, and the waste sliding plate is arranged on the surface of the lower mold seat around the lower forming part, and the waste material cut by the waste knife assembly is allowed to slide down through the waste sliding plate. The scrap knife assembly is slidably disposed on the surface of the lower die holder.

The upper mold includes an upper mold base. Ends are fixedly arranged on the surface of both ends of the upper mold base. A guide sleeve is arranged inside each end. The upper end of the upper mold base is fixedly provided with an upper molding. A waste knife insert is arranged, and a shearing force is formed between the waste knife insert and the waste knife assembly.

Wherein, the scrap knife assembly includes a tooth column, and the tooth column is arranged on the lower mold base, and a guide column is fixedly arranged on the lower mold base, a waste knife seat is slidably arranged on the guide column, and a waste knife seat is fixedly arranged on the upper surface of the waste knife seat. There is a scrap knife, the bottom of the scrap knife seat is rotated with a connecting rod, and the other end of the connecting rod is connected to the limiting inner plate by rotating the connecting block. One end of the limiting inner plate is provided with a matching limiting part, and the other end of the limiting inner plate A threaded column is arranged through, one end of the threaded column is fixedly provided with a pressure piece, and the other end of the threaded column is provided with an adjusting nut threaded on the surface to limit the sliding sleeve of the inner plate on the toothed column.

The invention provides a bending forming method of aluminum alloy bumper profiles for automobiles. Compared with the prior art, it has the following beneficial effects:

1. By turning the adjusting nut, the distance between the adjusting nut and the pressing piece is shortened. At this time, the distance between the pressing piece and the matching restricting part is elongated, so that there is no meshing relationship between the matching restricting part and the tooth column. Realize detachment, slide up and down to limit the inner plate, because the limit inner plate and the waste knife seat are connected by connecting rods, when the sliding of the limit inner plate drives the waste knife seat to move along the direction of the guide column, and then adjust the waste knife seat. Adjust the scrap knife relative to the position on the guide column. After the position is determined, mesh the matching restricting part with the tooth column to determine the position, and lock it by adjusting the nut, and the position of the scrap knife is fixed. , to realize the adjustment of the position of the scrap knife, which is convenient and simple, and does not need to be reprocessed and added to the mold.

2. The upper mold and the lower mold are buffered during the working process of the press to reduce the hard contact between the molds and improve the service life of the mold. The upper mold and the lower mold are used to limit the position during transfer through the connecting plate.

3. By connecting the connection module of the end piece, the end piece can be replaced, and through the two turning limit columns at the bottom, the turning limit column can provide a certain force support for the setting of the end piece, so that the end piece The head piece ensures the accuracy of the guide without affecting the service life of the mold.

Description of drawings

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural representation of the upper mold of the present invention;

Fig. 3 is the structure schematic diagram of lower mold of the present invention;

Fig. 4 is a schematic structural view of the waste knife assembly of the present invention;

Fig. 5 is a schematic diagram of the structure of the terminal of the present invention;

Fig. 6 is a schematic diagram of the structure of the underside of the end of the present invention;

Fig. 7 is a schematic diagram of the structure of the inversion limiting column of the present invention;

Fig. 8 is a structural schematic diagram of the flipping guide plate of the present invention.

In the figure: 1, upper mold; 11, upper mold base; 12, end; 121, end piece; 122, folding plate; 123, turning guide plate; 124, turning limiting column; 1241, turning limiting column main body; 1242, opening guide groove; 125, limiting plate; 126, clamping block; 127, limiting hole; 13, guide sleeve; 14, upper forming part; 15, scrap knife insert; 22. Connecting plate; 23. Buffer rubber ring; 24. End port; 25. Lower molding; 26. Waste slide plate; 27. Waste knife assembly; 271. Waste knife; 272. Waste knife seat; 273. Guide column; 274, tooth column; 275, connecting rod; 276, adjusting nut; 277, limit inner plate; 278, threaded column; 279, pressing piece;

detailed description

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to Figure 1-8, a method for bending and forming aluminum alloy bumper profiles for automobiles, including the following steps:

Step S1: Initially assemble and debug the mold, and assemble it;

Step S2: put the mold into the press for debugging;

Step S3: Adjust the relative position of the waste knife assembly 27 on the lower mold base 21 according to the data after debugging, and then press and form the mold for production;

Step S4: Get the product piece, and unload the mold.

The step S1 specifically includes: initial assembly and debugging of the corresponding parts of the upper mold 1 and the lower mold 2, adjusting the mold precision of the upper mold 1 and the lower mold 2 to the assembly requirements, and then performing assembly.

The step S2 specifically includes: hoisting the upper mold 1 and the lower mold 2 on the mold, first positioning and assembling the lower mold 2 on the compacted lower bed body, then the lower bed body enters the press, and the upper bed of the press Press down the body, fix the upper mold 1 on the upper bed body, and carry out assembly and debugging.

The assembly debugging in step S2 specifically includes:

Step Y1: After turning the end piece 121 up, the turning limiting column 124 is turned and slid, so that the turning limiting column 124 is turned and slid along the direction of the turning guide plate 123 and then stuck inside the limiting hole 127;

Step Y2: After the two turning limiting columns 124 are locked in the limiting hole 127, the positions of the two turning limiting columns 124 are limited by the limiting plate 125, and then the limiting plate 125 is locked by the locking block 126.

Wherein step S3 specifically includes: the upper die 1 is pressed down under the action of the upper bed body, since the end 12 and the guide sleeve 13 on the upper die 1 are consistent with the accuracy of the end port 24 and the guide post 28 on the lower die 2, Through the rough positioning of the end 12 and the end port 24, through the precise positioning of the guide sleeve 13 and the guide post 28, the mold production relationship between the upper mold 1 and the lower mold 2 is guaranteed, and the lower molded part 25 on the lower mold 2 Carry out the bending molding of the bumper profile with the upper forming part 14 on the upper mold 1, the holes on the bumper profile are punched correspondingly by the punch in the mold, and the edge forming is passed through the scrap knife assembly 27 and the scrap knife insert 15. Under the action of the upper mold 1 and the lower mold 2, a shearing force is formed, and the edge is trimmed and shaped, and fine-tuned by adjusting the scrap knife assembly 27.

The step S4 specifically includes: blanking the formed plate, after blanking, press down the upper bed body, separate the upper mold 1 from the press, and then release the lower bed body from the press to complete the product production.

In this embodiment, the upper mold 1 is arranged above the lower mold 2, the basic structure of the mold is formed between the two, and the molding of the mold product is realized by the upper mold 1 and the lower mold 2, wherein the lower mold 2 includes a lower mold base 21 , the lower mold base 21 is the basic body of the mould, and the two ends of the lower mold base 21 are provided with port openings 24, the end openings 24 realize rough positioning of the end heads 12 on the upper die 1, and each end port 24 A guide post 28 is provided at the middle position of the inner part of the guide post 28 for fine positioning, and connecting plates 22 are provided on both ends of the lower die base 21, through which the upper die 1 and the lower die 2 are limited during transfer. The role of the position prevents the position between the upper mold 1 and the lower mold 2 from being separated, and the four corners of the upper surface of the lower mold base 21 are provided with buffer rubber rings 23, and the buffer rubber rings 23 play the role of buffering, so that the upper mold 1 and the lower mold The lower mold 2 is buffered during the working process of the press to reduce the hard contact between the molds and improve the service life of the mold. The upper surface of the lower mold base 21 is fixed with a lower molded part 25. The lower molded part 25 is a profile molding The key parts, and the surrounding of the lower molding 25 is located on the surface of the lower mold base 21, and a waste slide plate 26 is arranged, and the waste material cut by the waste knife assembly 27 is allowed to slide through the waste slide plate 26, and the waste knife assembly 27 is slidably arranged on the lower mold base 21 on the surface.

The upper mold 1 includes an upper mold base 11, the two ends of the upper mold base 11 are provided with movable ends 12, each end 12 is provided with a guide sleeve 13 inside, and the upper end of the upper mold base 11 is fixedly provided with an upper molding 14. A waste knife insert 15 is arranged on both sides of the upper molding 14, and a shearing force is formed between the waste knife insert 15 and the waste knife assembly 27.

Wherein, the scrap knife assembly 27 comprises a tooth column 274, and the tooth column 274 is arranged on the lower mold base 21, and the lower mold base 21 is fixedly provided with a guide column 273, and the guide column 273 is slidably provided with a waste knife holder 272, and the waste knife The upper surface of the seat 272 is fixedly provided with a waste knife 271, and the bottom of the waste knife seat 272 is rotatably provided with a connecting rod 275, and the other end of the connecting rod 275 is rotatably connected between the rotating connecting block 2711 and the limiting inner plate 277, and the rotating connecting block 2711 is fixed on the limiting inner plate 277, one end of the limiting inner plate 277 is provided with a matching limiting part 2710, the other end of the limiting inner plate 277 is provided with a threaded column 278, and one end of the threaded column 278 is fixedly provided with a pressing piece 279, the threaded column An adjusting nut 276 is threaded on the surface of the other end of 278 to limit the sliding sleeve of the inner plate 277 on the tooth column 274 .

The end 12 includes a turn-over plate 122 which is rotatably arranged on the upper die base 11, and the upper end of the turn-over plate 122 is fixedly provided with a terminal part 121, and the inside of the upper die base 11 is provided with a limiting hole 127, and the upper die base 11 There are two flipping guide plates 123 arranged symmetrically on the side wall, and the flipping limiting column 124 is arranged on the side wall of the upper mold base 11 through the turning and sliding of the flipping guiding plate 123, and the turning restricting plate 125 is arranged on the side wall of the end piece 121. The length value of limiting plate 125 is greater than the distance value between two overturning limiting columns 124, and overturning limiting column 124 comprises an overturning limiting column main body 1241 and an opening guide groove 1242 provided on the overturning limiting column main body 1241, through the opening guide groove 1242 and The overturning guide plates 123 are movably arranged, and the limiting plate 125 is clamped between two overturning limiting columns 124 through the clamping block 126 fixed on the upper mold base 11 to prevent the detachment of the overturning limiting columns 124 from being blocked. The traditional end piece 121 is fixed on the upper mold base 11, so that only one mold uses the end piece, resulting in an increase in cost. By connecting the end piece 121 to the module, the end piece 121 can be replaced, through the bottom The two rotations of the flip limiting column 124 allow the flip limiting column 124 to provide a certain force support for the setting of the end piece 121, so that the end piece 121 can ensure the accuracy of the guide and will not affect the service life of the mold , through the restriction of the restriction plate 125, the two turnover restriction columns 124 are prevented from sliding down.

Wherein the specific mode of adjusting waste knife assembly 27 fine-tuning in step S3 comprises the following steps:

Step X1: Rotate the adjusting nut 276 to shorten the distance between the adjusting nut 276 and the pressing piece 279. At this time, the distance between the pressing piece 279 and the matching limiting part 2710 is elongated, so that the matching limiting part 2710 and the tooth column 274 There is no meshing relationship between them, and disengagement is realized;

Step X2: slide the limiting inner plate 277 up and down, because the limiting inner plate 277 is connected to the waste knife seat 272 through the connecting rod 275, when the sliding of the limiting inner plate 277 drives the waste knife seat 272 to move along the direction of the guide column 273, Then adjust the waste knife 271 on the waste knife seat 272 relative to the position on the guide column 273, and adjust the waste knife 271;

Step X3: After the position is determined, mesh the matching restricting part 2710 with the tooth column 274 to determine the position, and lock it by adjusting the nut 276 to fix the position of the waste knife 271 .

When the present invention is in use, the corresponding parts of the upper mold 1 and the lower mold 2 are initially assembled and debugged, the mold precision of the upper mold 1 and the lower mold 2 is adjusted to the assembly requirements, and then assembled, and the upper mold 1 and the lower mold 2 on the mold are assembled. The lower mold 2 is lifted and transported. First, the lower mold 2 is positioned and assembled on the compacted lower bed body, and then the lower bed body enters the press, and the upper bed body of the press is pressed down. After the upper mold 1 is fixed on the upper bed body, For assembly and debugging, the upper die 1 is pressed down under the action of the upper bed body. Since the accuracy of the end 12 and guide sleeve 13 on the upper die 1 is consistent with that of the end port 24 and guide post 28 on the lower die 2, through the end The rough positioning of the head 12 and the end port 24, through the precise positioning of the guide sleeve 13 and the guide post 28, ensures the mold production relationship between the upper mold 1 and the lower mold 2, and through the lower molded part 25 on the lower mold 2 and the upper mold. The upper forming part 14 on the mold 1 is used for the bending and forming of the bumper profile, and the holes on the bumper profile are punched correspondingly by the punch in the mold, and the edge is formed on the upper die through the scrap knife assembly 27 and the scrap knife insert 15 1 and the lower mold 2 to form a shearing force, trim the edge, adjust the scrap knife assembly 27 for fine-tuning, and turn the adjusting nut 276 to shorten the distance between the adjusting nut 276 and the pressing piece 279. The distance between the pressing piece 279 and the cooperating limiting part 2710 is elongated, so that there is no meshing relationship between the cooperating limiting part 2710 and the tooth column 274, so that disengagement is realized, and the inner plate 277 is limited by sliding up and down. The seats 272 are connected by a connecting rod 275. When the sliding of the inner plate 277 is restricted, the waste knife seat 272 is moved along the direction of the guide column 273, thereby adjusting the relative position of the waste knife 271 on the waste knife seat 272 relative to the guide column 273. Position, adjust the waste knife 271, after the position is determined, engage the cooperating limiting part 2710 with the tooth column 274, determine the position, and block it by adjusting the nut 276, and the position of the waste knife 271 is fixed.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art , without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but as long as it does not depart from the technical solution of the present invention, the technical content of the present invention In essence, any brief modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (7)

1. A method for bending and forming aluminum alloy bumper profiles for automobiles, characterized in that: comprising the steps: Step S1: Initially assemble and debug the mold, and assemble it; Step S2: put the mold into the press for debugging; Step S3: Adjust the relative position of the waste knife assembly (27) on the lower mold base (21) according to the data after debugging, and then press the mold for production; Step S4: Get the product piece, and unload the mold. 2. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 1, characterized in that: step S1 specifically includes: initial assembly and debugging of the corresponding parts of the upper mold (1) and the lower mold (2) , adjust the mold accuracy of the upper mold (1) and the lower mold (2) to the assembly requirements, and then perform assembly. 3. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 1, characterized in that: Step S2 specifically comprises: hoisting the upper mold (1) and the lower mold (2) on the mold, First position and assemble the lower mold (2) on the compacted lower bed body, then the lower bed body enters the press, the upper bed body of the press presses down, and after fixing the upper mold (1) on the upper bed body, proceed to assembly and debugging . 4. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 1, characterized in that: Step S3 specifically comprises: the upper die (1) is pressed down under the action of the upper bed body, and due to the upper die (1 ) on the end (12) and guide sleeve (13) and the accuracy of the end port (24) and guide post (28) on the lower die (2) are guaranteed to be consistent, through the end head (12) and end port ( 24), through the precise positioning of the guide sleeve (13) and the guide post (28), the mold production relationship between the upper mold (1) and the lower mold (2) can be guaranteed, and the lower mold (2) can The formed part (25) and the upper formed part (14) on the upper die (1) are bent into the bumper profile, the holes on the bumper profile are punched correspondingly by the punch in the mould, and the edge is formed by the scrap knife Assembly (27) and scrap knife insert (15) form shearing force under the effect of upper die (1) and lower die (2), the edge is trimmed and shaped, fine-tuned by adjusting scrap knife assembly (27). 5. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 1, characterized in that: step S4 specifically includes: blanking the formed plate, after blanking, pressing down the upper bed body, Detach the upper mold (1) from the press, and then detach the lower bed body from the press to complete product production. 6. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 3, characterized in that: the assembly and debugging in step S2 specifically includes: Step Y1: After the end piece (121) is turned up, the turning restriction column (124) is flipped and slid, and the turning restriction column (124) is stuck in the restriction hole ( 127) inside; Step Y2: After clamping the two overturning limiting columns (124) inside the limiting hole (127), restrict the positions of the two overturning limiting columns (124) through the limiting plate (125), and then lock the Restriction plate (125) stuck. 7. A method for bending and forming aluminum alloy bumper profiles for automobiles according to claim 4, characterized in that: the specific way of adjusting the fine-tuning of the scrap knife assembly (27) comprises the following steps: Step X1: Rotate the adjusting nut (276) to shorten the distance between the adjusting nut (276) and the pressure piece (279), and at this time the distance between the pressure piece (279) and the matching restricting part (2710) is elongated, Let there be no meshing relationship between the matching restricting part (2710) and the tooth column (274), so as to realize disengagement; Step X2: slide the limit inner plate (277) up and down, because the limit inner plate (277) is connected with the waste knife seat (272) through the connecting rod (275), when the sliding of the limit inner plate (277) drives the waste knife seat ( 272) move along the direction of the guide column (273), and then adjust the position of the waste knife (271) on the waste knife seat (272) relative to the position on the guide column (273), and adjust the waste knife (271); Step X3: After the position is determined, engage the cooperating limiting part (2710) with the tooth column (274), determine the position, lock it by adjusting the nut (276), and fix the position of the scrap knife (271).

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