CN115351166A

CN115351166A - Stamping and bending equipment for automobile connecting piece

Info

Publication number: CN115351166A
Application number: CN202211131279.8A
Authority: CN
Inventors: 应伟标
Original assignee: Ninghai Maoxiang Hardware Stamping Co ltd
Current assignee: Ninghai Maoxiang Hardware Stamping Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-11-18

Abstract

The invention relates to the technical field of automobile part processing, in particular to stamping and bending equipment for an automobile connecting piece, and solves the problem that in the prior art, a forming and processing device for an automobile non-standard metal connecting piece needs to be improved. The utility model provides an automobile connector's punching press equipment of bending, includes base and footstock of connecting through the support column to and install the hydraulic cylinder on the footstock, still include: the stamping and bending mechanism comprises an upper die and a lower die, wherein the upper die is installed at the bottom end of the hydraulic cylinder, and the lower die is installed on the base. According to the punching and bending device, the punching hole and the conduction hole are preset, so that the accuracy of bending and punching processing of the non-standard metal plate is guaranteed, the punching waste and the metal connecting piece are convenient to collect independently by arranging the guide-out mechanism, the complex operation work of screening the punching waste and the metal connecting piece is avoided, the accurate bending and punching of the non-standard metal plate can be realized, and the waste and the bending forming material are convenient to recycle respectively.

Description

Stamping and bending equipment for automobile connecting piece

Technical Field

The invention relates to the technical field of automobile part processing, in particular to stamping and bending equipment for an automobile connecting piece.

Background

Automobile parts includes standard and non-standard spare, and wherein the automobile connecting spare is mostly non-standard spare, and the non-standard metal part of car adopts cold stamping bending machine-shaping now, and the raw materials of connecting piece generally are the steel sheet, and the automobile metal spare adopts cold stamping forming, can bring better safety for the vehicle.

The non-standard connecting piece of the automobile needs to be punched after being bent, so that the bolt is matched and screwed at the punched position when the connecting piece is used. The existing non-standard metal connecting piece for the automobile with the V-shaped structure has the advantages that the included angle of the V-shaped structure is different according to different use requirements, however, the part is not convenient and fast to punch after being bent, due to the uncertainty of the punching angle, multiple punching dies need to be designed, the punching dies need to be matched with punching waste to discharge, the machining process of the non-standard connecting piece is complex, and machining cost is high.

Therefore, the stamping and bending equipment for the automobile connecting piece is provided, and the stamping and bending equipment integrating bending, punching and punching waste guiding three mechanisms is arranged, so that the forming and processing of the non-standard connecting piece are more efficient and convenient.

Disclosure of Invention

The invention aims to provide stamping and bending equipment for an automobile connecting piece, and solves the problem that in the prior art, a forming and processing device for an automobile non-standard metal connecting piece needs to be improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automobile connecting piece's punching press equipment of bending, includes base and footstock of connecting through the support column to and install the hydraulic cylinder on the footstock, still include:

the stamping and bending mechanism comprises an upper die and a lower die, the upper die is arranged at the bottom end of the hydraulic cylinder, the lower die is arranged on the base, and a forming cavity in a V-shaped structure is formed between the upper die and the lower die when in a stamping matching state;

the punching mechanism comprises two groups of driving columns, two groups of punching columns, two groups of guide seats and a punching driving piece, wherein the punching driving piece controls the two groups of driving columns to vertically limit and move on the base;

the leading-out mechanism comprises an air charging and discharging pump, an air guide pipe, a guide hole formed on a forming inclined plane of the upper die, a discharge hole formed in the upper die, a sliding cavity formed in the upper die and a piston rod matched with the sliding cavity; the conducting hole axial lead and the punching hole collineation, conducting hole, bin outlet and sliding chamber communicate each other, the bin outlet, conducting hole and sliding chamber are provided with two sets ofly respectively, the bin outlet runs through the side end face of supreme mould, and the sliding chamber runs through the opposite side terminal surface of supreme mould, fill and discharge the pump and communicate with two sets of sliding chambers through air duct and respectively.

Preferably, the punching machine further comprises an electric control mechanism for driving the hydraulic oil cylinder, the inflation and deflation pump and the punching driving piece to start or stop.

Preferably, material cutting plates are installed on two sides of the upper die, when the upper die is in a bending forming state, the end faces of the inner sides of the material cutting plates are in sliding fit with the end faces of the outer sides of the lower die, and material discharging plates which incline downwards are connected to two sides of the lower die respectively.

Preferably, the molding surface of the upper mold and the molding surface of the lower mold are respectively of a V-shaped structure, and the axial leads of the two groups of stamping holes are respectively vertical to two inclined end surfaces of the V-shaped structure.

Preferably, the two sides of the lower die are respectively provided with a positioning cylinder, the two sides of the upper die are respectively provided with a positioning pin, and the positioning pins are matched and inserted with the positioning cylinders in a bending state.

Preferably, the width of relief hole is greater than the thickness of the slag charge that punches a hole, the piston rod is T type structure, and the horizontal end of T type structure point is close to the air duct, the internal diameter of slip chamber is the same with the external diameter of the T type horizontal end of piston rod, the slip chamber is provided with the stopper with the intercommunication end inboard of relief hole, the outer wall laminating of stopper and piston rod.

Preferably, a sliding seat with a T-shaped cross section is installed at the bottom end of the stamping column, a sliding groove with a T-shaped cross section is formed in the guide seat, two ends of the sliding groove do not penetrate through the guide seat respectively, the sliding seat is limited to slide in the sliding groove, and the inclined directions of the corresponding forming inclined end surfaces of the lower die in the sliding direction are parallel.

Preferably, the under casing is installed to the below of base, the driving piece that punches a hole is installed in the under casing, install the mount pad on the base, the bed die is connected with the mount pad, the vertical slip of drive column runs through mount pad and base, to in the under casing.

Preferably, the punching driving part is two groups of cylinders, the two groups of cylinders are respectively installed in the bottom box, and the top ends of the driving parts of the two groups of cylinders are respectively and fixedly installed with the corresponding driving columns.

Preferably, the driving piece that punches a hole is the hydro-cylinder that punches a hole, the hydro-cylinder that punches a hole is installed in the central point of under casing and is put the department, the drive division top fixed mounting of the hydro-cylinder that punches a hole has the push pedal, the push pedal is nearly style of calligraphy structure, the both ends of push pedal respectively with the bottom fixed mounting of two drive posts.

The invention has at least the following beneficial effects:

1. the punching holes are formed in the bending forming end face of the lower die, the transmission holes are formed in the bending forming end face of the upper die, so that the punching mechanism avoids a concentrated stress area of the punching and bending mechanism, the punching holes and the transmission holes perpendicular to the bending forming end face are preset according to the bending forming end face, the stability of a metal punching path can be guaranteed, and the accuracy of bending and punching of the non-standard metal plate is guaranteed.

2. Through setting up the derivation mechanism, in order to utilize the relief hole and the sliding chamber counterpunch hole waste material of seting up in the mould to collect and derive, make the derivation direction of the waste material that punches a hole and the nonstandard board derivation direction of bending opposite, the waste material derivation direction that punches a hole is located the top of metal import side, the waste material that realizes punching a hole and the separately ejection of compact of metallic interconnect after bending, be convenient for punch a hole waste material and metallic interconnect's independent collection, avoid causing the complicated operation work of waste material and metallic interconnect screening of punching a hole, realized can realizing accurately bending and punching a hole to nonstandard metallic interconnect, and be convenient for the waste material and bend the punching press equipment of bending that the molding material retrieved respectively.

3. Carry out lifting control to the drive column through setting up two sets of cylinders or a set of hydro-cylinder that punches a hole, can design guide holder and slide complex inclination according to the inclination of non-standard metal connecting piece, realize the vertical drive of drive column, the effect that the slope of control punching press post punched a hole for equipment later stage design cost is low, and equipment usage is more nimble.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic front view of a stamping and bending apparatus;

FIG. 2 is a rear view of the stamping and bending apparatus;

FIG. 3 is a schematic view of a lower mold mounting structure;

FIG. 4 is a schematic view of the disassembled structure of the lower mold, the punching column, the driving column and the cylinder;

FIG. 5 is a schematic view of the punch post and guide seat in a disassembled configuration;

FIG. 6 is a schematic view of an upper mold mounting structure;

FIG. 7 is a cross-sectional view of the upper mold;

FIG. 8 is a schematic view showing the mating state of the upper mold and the lower mold;

FIG. 9 is a schematic view of the structure of the driving column and the punching cylinder.

In the figure: 1. a base; 2. a bottom box; 3. a mounting seat; 4. a lower die; 5. a discharge plate; 6. an upper die; 7. a positioning cylinder; 8. positioning pins; 9. an air charging and discharging pump; 10. an air duct; 11. a hydraulic cylinder; 12. a top seat; 13. a drive column; 14. a guide seat; 15. punching the column; 16. a discharge hole; 17. punching a hole; 18. a cylinder; 19. a slide base; 20. a chute; 21. a material cutting plate; 22. a conductive hole; 23. punching an oil cylinder; 24. a sliding cavity; 25. a piston rod; 26. a molding cavity; 27. a push plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

Referring to fig. 1-9, a stamping and bending device for automobile connectors comprises a base 1 and a top seat 12 connected through a support column, and a hydraulic oil cylinder 11 installed on the top seat 12, and further comprises:

the stamping and bending mechanism comprises an upper die 6 and a lower die 4, wherein the upper die 6 is installed at the bottom end of the hydraulic oil cylinder 11, the lower die 4 is installed on the base 1, and a forming cavity 26 in a V-shaped structure is formed between the upper die 6 and the lower die 4 in a stamping matching state;

the punching mechanism comprises two groups of driving columns 13, two groups of punching columns 15, two groups of guide seats 14 and a punching driving piece, wherein the punching driving piece controls the two groups of driving columns 13 to vertically limit and move on the base 1, the two groups of guide seats 14 are respectively installed at the top ends of the two groups of driving columns 13, the bottom ends of the two groups of punching columns 15 are respectively limited in the corresponding guide seats 14 to obliquely slide, the axial lead of each punching column 15 is perpendicular to the forming inclined plane of the lower die 4, and a punching hole 17 for the punching column 15 to penetrate through is formed in the lower die 4;

the leading-out mechanism comprises a charging and discharging pump 9, an air duct 10, a guide hole 22 formed on the forming inclined plane of the upper die 6, a discharge hole 16 formed in the upper die 6, a sliding cavity 24 formed in the upper die 6 and a piston rod 25 matched with the sliding cavity 24; the axial lead of the guide hole 22 is collinear with the stamping hole 17, the guide hole 22, the discharge hole 16 and the sliding cavity 24 are communicated with each other, two groups of the discharge hole 16, the guide hole 22 and the sliding cavity 24 are respectively arranged, the discharge hole 16 penetrates through the side end face of the upper die 6, the sliding cavity 24 penetrates through the other side end face of the upper die 6, and the inflation and deflation pump 9 is respectively communicated with the two groups of the sliding cavities 24 through the air duct 10;

the punching and inflating device also comprises an electric control mechanism for driving the hydraulic oil cylinder 11, the inflating and deflating pump 9 and the punching driving piece to start or stop;

further, material cutting plates 21 are mounted on two sides of the upper die 6, when the upper die is in a bending forming state, end faces of the inner sides of the material cutting plates 21 are in sliding fit with end faces of the outer sides of the lower die 4, two sides of the lower die 4 are respectively connected with material discharging plates 5 which incline downwards, specifically, when the upper die 6 is driven by the hydraulic oil cylinder 11 to punch towards the lower die 4, the material cutting plates 21 are bent, redundant material on two sides is retained outside the lower die 4, and the material cutting plates 21 are used for cutting redundant material on two sides;

further, the forming surface of the upper die 6 and the forming surface of the lower die 4 are respectively in a V-shaped structure, the axial leads of the two groups of stamping holes 17 are respectively vertical to two inclined end surfaces of the V-shaped structure, and particularly, after the stamping column 15 moves in the stamping hole 17, the effect of vertically punching the formed metal plate by the stamping column 15 can be ensured;

furthermore, two sides of the lower die 4 are respectively provided with a positioning cylinder 7, two sides of the upper die 6 are respectively provided with a positioning pin 8, the positioning pins 8 are matched and inserted with the positioning cylinders 7 in a bending state, and specifically, in a stamping state of the upper die 6 and the lower die 4, the positioning pins 8 are inserted with the positioning cylinders 7;

in this embodiment: the metal plate is placed at the top of a lower die 4, a hydraulic oil cylinder 11 controls an upper die 6 to move downwards so as to perform stamping bending on the metal plate, and a material cutting plate 21 cuts off excess materials on two sides of the metal plate so as to complete the metal plate stamping bending task in the first step; when the punching column 15 is in a stop state, the extending end of the punching column 15 is positioned in the transmission hole 22 to complete the punching task after the non-standard metal plate is bent in the second step; when the punching of the second step is finished, the punching column 15 pushes the punching waste through the guide hole 22 to the discharge hole 16, the piston rod 25 is driven to slide in the sliding cavity 24 by inflating and deflating pump 9, the piston rod 25 pushes the punching waste out of the discharge hole 16, the inflating and deflating pump 9 controls the piston rod 25 to reset, the punching waste exporting task of the third step is completed, and the efficient and accurate bending and punching processing of the non-standard metal connecting piece of the automobile is realized;

in the embodiment, the punching holes 17 are formed in the bending forming end face of the lower die 4, the transmission holes 22 are formed in the bending forming end face of the upper die 6, so that the punching mechanism avoids a concentrated stress area of the punching and bending mechanism, and the punching holes 17 and the transmission holes 22 which are perpendicular to the bending forming end face are preset according to the bending forming end face, so that the stability of a metal punching path can be ensured, and the accuracy of metal punching is ensured; through setting up the derivation mechanism, in order to utilize the bin outlet 16 and the 24 counterpunching hole waste materials that slide chamber seted up in the upper mould 6 to collect and derive, make the derivation direction of the waste material that punches a hole and the nonstandard board derivation opposite direction that bends, the waste material derivation direction that punches a hole is located the top of metal import side, the realization waste material that punches a hole and the metal connecting piece after bending separately the ejection of compact, be convenient for punch a hole waste material and metal connecting piece's independent collection, avoid causing the complicated operation work of waste material and the metal connecting piece screening of punching a hole, realized can realizing accurately bending and punching a hole to nonstandard metal sheet, and be convenient for the waste material and bend the equipment of bending that the molding material retrieved respectively.

Example two

Referring to fig. 1-9, a stamping and bending device for automobile connectors comprises a base 1 and a top seat 12 connected through a support pillar, and a hydraulic oil cylinder 11 installed on the top seat 12, and further comprises:

the punching machine also comprises an electric control mechanism for driving the hydraulic oil cylinder 11, the air charging and discharging pump 9 and the punching driving piece to start or stop;

the two sides of the upper die 6 are provided with material cutting plates 21, when the upper die is in a bending forming state, the end surfaces of the inner sides of the material cutting plates 21 are in sliding fit with the end surfaces of the outer sides of the lower die 4, and the two sides of the lower die 4 are respectively connected with material discharging plates 5 which incline downwards; the forming surface of the upper die 6 and the forming surface of the lower die 4 are respectively in a V-shaped structure, and the axial leads of the two groups of stamping holes 17 are respectively and correspondingly vertical to two inclined end surfaces of the V-shaped structure; two sides of the lower die 4 are respectively provided with a positioning cylinder 7, two sides of the upper die 6 are respectively provided with a positioning pin 8, and the positioning pins 8 are matched and spliced with the positioning cylinders 7 in a bending state;

the width of the discharge hole 16 is larger than the thickness of the punched slag, the piston rod 25 is of a T-shaped structure, the horizontal end of a T-shaped structure point is close to the air guide pipe 10, the inner diameter of the sliding cavity 24 is the same as the outer diameter of the T-shaped horizontal end of the piston rod 25, a limiting block is arranged on the inner side of the communicating end of the sliding cavity 24 and the discharge hole 16, and the limiting block is attached to the outer wall of the piston rod 25;

in this embodiment: the depth of the conducting hole 22 is less than one-half of the thickness of the bent metal plate, the thickness of the discharge hole 16 is not more than three-half of the thickness of the bent metal plate, the length of the sliding cavity 24 is equal to the length of the discharge hole 16, and the initial state of the extending end of the piston rod 25 is positioned in the discharge hole 16 and is not in the extending area of the conducting hole 22; by setting the above-mentioned restriction, it is possible to realize smooth entry of the punching waste into the discharge hole 16 and smooth exit of the discharge hole 16 under the push of the piston rod 25.

EXAMPLE III

a sliding seat 19 with a T-shaped cross section is installed at the bottom end of the punching column 15, a sliding groove 20 with a T-shaped cross section is formed in the guide seat 14, two ends of the sliding groove 20 do not penetrate through the guide seat 14 respectively, the sliding seat 19 is limited in the sliding groove 20 to slide, and the inclined directions of the corresponding forming inclined end surfaces of the lower die 4 in the sliding direction are parallel; a bottom box 2 is arranged below the base 1, the punching driving piece is arranged in the bottom box 2, a mounting seat 3 is arranged on the base 1, the lower die 4 is connected with the mounting seat 3, and the driving column 13 vertically penetrates through the mounting seat 3 and the base 1 in a sliding manner to the bottom box 2; the punching driving piece is composed of two groups of cylinders 18, the two groups of cylinders 18 are respectively arranged in the bottom box 2, and the top ends of the driving parts of the two groups of cylinders 18 are respectively fixedly arranged with the corresponding driving columns 13;

in this embodiment: by using two sets of cylinders 18 to respectively control the lifting of the driving column 13, smooth completion of punching can be ensured.

Example four

the punching mechanism comprises two groups of driving columns 13, two groups of punching columns 15, two groups of guide seats 14 and a punching driving piece, wherein the punching driving piece controls the two groups of driving columns 13 to vertically limit and move on the base 1, the two groups of guide seats 14 are respectively installed at the top ends of the two groups of driving columns 13, the bottom ends of the two groups of punching columns 15 are respectively limited in the corresponding guide seats 14 to obliquely slide, the axial lead of the punching column 15 is vertical to the forming inclined plane of the lower die 4, and a punching hole 17 for the punching column 15 to penetrate through is formed in the lower die 4;

a sliding seat 19 with a T-shaped cross section is installed at the bottom end of the punching column 15, a sliding groove 20 with a T-shaped cross section is formed in the guide seat 14, two ends of the sliding groove 20 do not penetrate through the guide seat 14 respectively, the sliding seat 19 is limited in the sliding groove 20 to slide, and the inclined directions of the corresponding forming inclined end surfaces of the lower die 4 in the sliding direction are parallel; a bottom box 2 is arranged below the base 1, the punching driving piece is arranged in the bottom box 2, an installation seat 3 is arranged on the base 1, the lower die 4 is connected with the installation seat 3, and the driving column 13 vertically penetrates through the installation seat 3 and the base 1 in a sliding mode and reaches the bottom box 2; the punching driving piece is a punching oil cylinder 23, the punching oil cylinder 23 is arranged at the central position of the bottom case 2, a push plate 27 is fixedly arranged at the top end of a driving part of the punching oil cylinder 23, the push plate 27 is in a structure like a Chinese character 'ji', and two ends of the push plate 27 are respectively fixedly arranged with the bottom ends of the two driving columns 13;

in this embodiment: through set up a punching oil jar 23 in under casing 2, can realize punching oil jar 23 drive push pedal 27 upward movement, push pedal 27 promotes two sets of drive posts 13 upward movement simultaneously, compares in embodiment three, and equipment processing cost is low, and equipment use cost is low.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automobile connecting piece's punching press equipment of bending, includes base (1) and footstock (12) of connecting through the support column to and install hydraulic cylinder (11) on footstock (12), its characterized in that still includes:

the stamping and bending mechanism comprises an upper die (6) and a lower die (4), wherein the upper die (6) is arranged at the bottom end of the hydraulic oil cylinder (11), the lower die (4) is arranged on the base (1), and a forming cavity (26) in a V-shaped structure is formed between the upper die (6) and the lower die (4) in a stamping matching state;

the punching mechanism comprises two groups of driving columns (13), two groups of punching columns (15), two groups of guide seats (14) and a punching driving piece, wherein the punching driving piece controls the two groups of driving columns (13) to vertically limit and move on the base (1), the two groups of guide seats (14) are respectively installed at the top ends of the two groups of driving columns (13), the bottom ends of the two groups of punching columns (15) are respectively limited in the corresponding guide seats (14) to obliquely slide, the axial lead of each punching column (15) is vertical to the forming inclined plane of the lower die (4), and a punching hole (17) for the punching column (15) to penetrate through is formed in the lower die (4);

the guiding mechanism comprises a charging and discharging pump (9), an air duct (10), a guide hole (22) formed on a forming inclined plane of the upper die (6), a discharging hole (16) formed in the upper die (6), a sliding cavity (24) formed in the upper die (6) and a piston rod (25) matched with the sliding cavity (24); pass guide hole (22) axial lead and punching press hole (17) collineation, pass guide hole (22), relief hole (16) and slip chamber (24) and communicate each other, relief hole (16), conduction hole (22) and slip chamber (24) are provided with two sets ofly respectively, relief hole (16) run through the side end face of supreme mould (6), and the opposite side terminal surface of supreme mould (6) is run through in slip chamber (24), fill inflation pump (9) and communicate through air duct (10) and two sets of slip chambers (24) respectively.

2. The stamping and bending device for the automobile connecting piece is characterized by further comprising an electric control mechanism for driving the hydraulic oil cylinder (11), the charging and discharging pump (9) and the punching driving piece to be started or stopped.

3. The stamping and bending equipment for the automobile connecting pieces as claimed in claim 1, wherein material cutting plates (21) are mounted on two sides of the upper die (6), the inner side end faces of the material cutting plates (21) are in sliding fit with the outer side end faces of the lower die (4) in a bending forming state, and two sides of the lower die (4) are respectively connected with material discharging plates (5) which are inclined downwards.

4. The stamping and bending device for the automobile connecting piece is characterized in that the forming surface of the upper die (6) and the forming surface of the lower die (4) are respectively in a V-shaped structure, and the axial leads of the two groups of stamping holes (17) are respectively perpendicular to two inclined end surfaces of the V-shaped structure.

5. The stamping and bending device for the automobile connecting piece according to claim 1, wherein two sides of the lower die (4) are respectively provided with a positioning cylinder (7), two sides of the upper die (6) are respectively provided with a positioning pin (8), and the positioning pins (8) are matched and inserted with the positioning cylinders (7) in a bending state.

6. The stamping and bending device for the automobile connecting pieces according to claim 1, wherein the width of the discharge hole (16) is larger than the thickness of punched slag, the piston rod (25) is of a T-shaped structure, the horizontal end of a T-shaped structure point is close to the air guide pipe (10), the inner diameter of the sliding cavity (24) is the same as the outer diameter of the T-shaped horizontal end of the piston rod (25), a limiting block is arranged on the inner side of the communication end of the sliding cavity (24) and the discharge hole (16), and the limiting block is attached to the outer wall of the piston rod (25).

7. The stamping and bending equipment for the automobile connecting piece is characterized in that a sliding seat (19) with a T-shaped structure in cross section is installed at the bottom end of the stamping column (15), a sliding groove (20) with a T-shaped structure in cross section is formed in the guide seat (14), two ends of the sliding groove (20) do not penetrate through the guide seat (14), the sliding seat (19) is limited to slide in the sliding groove (20), and the inclined directions of the corresponding forming inclined end surfaces of the lower die (4) in the sliding direction are parallel.

8. The stamping and bending device for the automobile connecting pieces as claimed in claim 1, wherein a bottom box (2) is installed below the base (1), the punching driving piece is installed in the bottom box (2), a mounting seat (3) is installed on the base (1), the lower die (4) is connected with the mounting seat (3), and the driving column (13) vertically slides through the mounting seat (3) and the base (1) to the bottom box (2).

9. The stamping and bending device for the automobile connecting pieces as claimed in claim 1, wherein the punching driving pieces are two groups of air cylinders (18), the two groups of air cylinders (18) are respectively installed in the bottom box (2), and the top ends of the driving parts of the two groups of air cylinders (18) are respectively fixedly installed with the corresponding driving columns (13).

10. The stamping and bending equipment for the automobile connecting pieces according to claim 1, wherein the punching driving piece is a punching oil cylinder (23), the punching oil cylinder (23) is installed at the central position of the bottom box (2), a push plate (27) is fixedly installed at the top end of a driving part of the punching oil cylinder (23), the push plate (27) is of a structure like a Chinese character 'ji', and two ends of the push plate (27) are fixedly installed with the bottom ends of the two driving columns (13) respectively.