CN109158484B - Car body beam processing equipment - Google Patents

Abstract

The invention discloses a car body cross beam processing equipment, including a blanking die, a first transfer die, a second transfer die and a third transfer die; the blanking die is correspondingly provided with a first blanking station; the first transfer die is correspondingly provided with four stations, which are respectively the second drawing station, the third trimming and punching station, the fourth flanging station and the fifth punching and trimming station in the order of processing; the second transfer die is correspondingly provided with four stations, which are respectively the sixth flanging station, the seventh forming and flanging station, the eighth flanging station and the ninth flanging station in the order of processing; the third transfer die is correspondingly provided with three stations, which are respectively the tenth flanging station, the eleventh flanging station and the twelfth punching and shaping station in the order of processing. The car body cross beam processing equipment of the invention is easy to realize high-speed automated stamping production, the quality of stamping parts is stable, and the production efficiency is greatly improved.

Description

Car body beam processing equipment

Technical Field

The invention belongs to the technical field of molds, and in particular to a car body crossbeam processing device.

Background technique

In order to improve productivity and reduce costs, many automobile covers are made by progressive stamping, but there are few reports on progressive stamping of open-shaped high-complexity body sheet metal parts. The car body cross beam is a kind of open-shaped high-complexity body sheet metal part. The difficulty of implementing progressive stamping of open-shaped high-complexity body sheet metal parts is mainly reflected in the planning of workstations, the displacement and positioning of workpieces at each workstation, and the arrangement and design of non-standard wedges.

At present, most of the open-shaped high-complexity body sheet metal parts are stamped with a single-process die, which can ensure the stamping accuracy and quality, but requires a large number of matching machine tools and has low production efficiency. With the help of a manipulator, the implementation of multi-station transfer die stamping for open-shaped high-complexity body sheet metal parts can achieve high-speed automated stamping production of open-shaped high-complexity body sheet metal parts, stable stamping quality, and greatly improve production efficiency, but the implementation of this technology is difficult. In order to solve the technical problems faced, it is very important to urgently provide a design scheme for a multi-station transfer die for the cross beam of a car body.

The patent document with publication number CN103331371A discloses an oil pan stamping die and mounting structure, and the selected technical solution relates to an oil pan stamping die and mounting structure, which uses a common die to complete the stamping of complex-shaped parts through the cooperation of an upper die seat, a lower die seat, a material pressing core and other structures, and has a good stamping effect on oil pans with simple shapes and various automotive parts. However, the die is a composite die and can only produce oil pans with relatively simple shapes. The production efficiency of oil pans with complex shapes is not high, so it is not very practical.

For example, the patent document with publication number CN105537393A discloses a multi-station transfer mold for an engine oil pan. The selected technical solution involves a set of 9-station transfer molds for the engine oil pan designed using the transfer method. The mold is a deep drawing mold with simple punching and flanging, and has little reference value for the design of transfer molds for open-shaped and highly complex body sheet metal parts.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a car body cross beam processing equipment, the purpose of which is to improve production efficiency.

In order to achieve the above object, the technical solution adopted by the present invention is: a car body cross beam processing equipment, including a blanking die, a first transfer die, a second transfer die and a third transfer die arranged in sequence according to the processing sequence;

The blanking die comprises a blanking upper die assembly and a blanking lower die assembly, and the blanking upper die assembly and the blanking lower die assembly are respectively provided with a first blanking station;

The first transfer die includes a first upper die assembly and a first lower die assembly, and the first upper die assembly and the first lower die assembly are respectively provided with four stations, which are, in order of processing, a second drawing station, a third trimming and punching station, a fourth flanging station, and a fifth punching and trimming station;

The second transfer die includes a second upper die assembly and a second lower die assembly, and the second upper die assembly and the second lower die assembly are respectively provided with four stations, which are respectively a sixth flanging station, a seventh forming and flanging station, an eighth flanging station and a ninth flanging station in order of processing;

The third transfer die includes a third upper die assembly and a third lower die assembly. The third upper die assembly and the third lower die assembly are respectively provided with three stations, which are the tenth flanging station, the eleventh flanging station and the twelfth punching and shaping station in order of processing.

Corresponding to the first blanking station, the blanking upper die assembly includes a first upper template and a first punch, a second punch, a third punch, a fourth punch, a first stripping plate, a second stripping plate and an insert arranged on the first upper template, the first punch, the second punch and the third punch are located on the same side of the fourth punch, the first punch, the second punch and the third punch pass through the first stripping plate, and the fourth punch passes through the second stripping plate, the blanking lower die assembly includes a first lower template, a first fixed plate matched with the first punch, a second fixed plate matched with the second punch, a third fixed plate matched with the third punch, a first die matched with the fourth punch and a second die matched with the insert, the first fixed plate, the second fixed plate, the third fixed plate, the first die and the second die are arranged on the first lower template, the first fixed plate, the second fixed plate and the third fixed plate are located below the first stripping plate, and the first die and the second die are located below the second stripping plate.

Corresponding to the second drawing station, the first upper mold assembly includes a second upper mold plate and two forming blocks arranged on the second upper mold plate, the first lower mold assembly includes a second lower mold plate, a unloading plate and a fixed seat arranged on the second lower mold plate, an inner forming block arranged on the fixed seat and matched with the two forming blocks of the first upper mold assembly, and two outer forming blocks arranged on the unloading plate and matched with the two forming blocks of the first upper mold assembly, and the inner forming block is located between the two outer forming blocks.

Corresponding to the third trimming and punching station, the first upper mold assembly includes a third upper mold plate, a fixed plate, a stripping plate, a positioning pin and a punch arranged on the third upper mold plate, and eight trimming knife blocks arranged on the fixed plate; the first lower mold assembly includes a third lower mold plate and an inner concave mold and two outer concave molds arranged on the third lower mold plate; the stripping plate, the positioning pin and the punch of the first upper mold assembly cooperate with the inner concave mold; the eight trimming knife blocks of the first upper mold assembly cooperate with the two outer concave molds; and the inner concave mold is located between the two outer concave molds.

Corresponding to the fourth flanging station, the first upper mold assembly includes a fourth upper mold plate, a stripping plate and two outer forming blocks arranged on the fourth upper mold plate, and an inner forming block arranged on the stripping plate, and the inner forming block is located between the two outer forming blocks. The first lower mold assembly includes a fourth lower mold plate, a forming block and two positioning pins arranged on the fourth lower mold plate, and the inner forming block and the two outer forming blocks of the first upper mold assembly cooperate with the forming block.

Corresponding to the fifth punching and trimming station, the first upper mold assembly includes a fifth upper mold plate, a stripping plate arranged on the fifth upper mold plate and a forming block arranged on the stripping plate, the first lower mold assembly includes a fifth lower mold plate and a die arranged on the fifth lower mold plate, the forming block arranged on the stripping plate cooperates with the die arranged on the fifth lower mold plate, the first transfer mold also includes a first punching device, a second punching device, a first blanking device and a second blanking device, the first punching device, the second punching device, the first blanking device and the second blanking device are connected to the first upper mold assembly and the first lower mold assembly, the first punching device and the second punching device are arranged relative to each other, the first blanking device and the second blanking device are arranged relative to each other, the die arranged on the fifth upper mold plate is located between the first punching device and the second punching device, and the die arranged on the fifth upper mold plate is also located between the first blanking device and the second blanking device.

Corresponding to the sixth flanging station, the second upper mold assembly includes a sixth upper mold plate and two forming blocks arranged on the sixth upper mold plate, the second lower mold assembly includes a sixth lower mold plate, a unloading plate arranged on the sixth lower mold plate, a forming block arranged on the unloading plate and a forming block arranged on the sixth lower mold plate, and the two forming blocks of the second upper mold assembly cooperate with the two forming blocks of the second lower mold assembly.

Corresponding to the seventh forming and flanging station, the second upper mold assembly includes a seventh upper mold plate, a stripping plate arranged on the seventh upper mold plate, two punches, a front forming block and two side forming blocks, and a pressure plate arranged on the stripping plate, the second lower mold assembly includes a seventh lower mold plate and a front forming block and a rear forming block arranged on the seventh lower mold plate, the front forming block of the second lower mold assembly is located below the front forming block of the second upper mold assembly and the two front forming blocks cooperate with each other, the rear forming block is located below the pressure plate and the two side forming blocks and the rear forming block cooperates with the pressure plate and the two side forming blocks.

Corresponding to the eighth flanging station, the second upper mold assembly includes an eighth upper mold plate, a unloading plate arranged on the eighth upper mold plate, and a pressing plate arranged on the unloading plate, the second lower mold assembly includes an eighth lower mold plate and a forming block arranged on the eighth lower mold plate and matched with the pressing plate, the second transfer mold also includes a first flanging device and a second flanging device, the first flanging device and the second flanging device are connected to the second upper mold assembly and the second lower mold assembly, and the first flanging device and the second flanging device are arranged relatively, and the forming block is located between the first flanging device and the second flanging device.

Corresponding to the ninth flanging station, the second upper mold assembly includes a ninth upper mold plate and a forming block arranged on the ninth upper mold plate, the second lower mold assembly includes a ninth lower mold plate, a unloading plate arranged on the ninth lower mold plate, a rear forming block arranged on the unloading plate, and a front forming block arranged on the ninth lower mold plate, and the forming block of the second upper mold assembly cooperates with the rear forming block and the front forming block of the second lower mold assembly.

Corresponding to the tenth flanging station, the third upper mold assembly includes the tenth upper mold plate, a pressure plate and a rear forming block arranged on the tenth upper mold plate, and two front forming blocks arranged on the pressure plate. The third lower mold assembly includes the tenth lower mold plate and a forming block arranged on the tenth lower mold plate, and the forming block cooperates with the rear forming block and the two front forming blocks.

Corresponding to the eleventh flanging station, the third upper mold assembly includes an eleventh upper mold plate and a pressure plate arranged on the eleventh upper mold plate, the third lower mold assembly includes an eleventh lower mold plate and a forming block arranged on the eleventh lower mold plate, and the third transfer mold also includes a third flanging device, the third flanging device is connected to the third upper mold assembly and the third lower mold assembly, and the forming block cooperates with the third flanging device and the pressure plate.

Corresponding to the twelfth punching and shaping station, the third upper die assembly includes the twelfth upper die plate, a stripping plate arranged on the twelfth upper die plate, two forming blocks and a punch, and a window plate arranged on the stripping plate; the third lower die assembly includes the twelfth lower die plate, a fixed seat arranged on the twelfth lower die plate, two forming blocks, and a die arranged on the fixed seat; the two forming blocks of the third lower die assembly cooperate with the two forming blocks of the third upper die assembly, the punch cooperates with the die, and the fixed seat is located between the two forming blocks.

The car body cross beam processing equipment of the present invention has the following advantages:

1. For the opening side forming of highly complex car body beams, the sheet boundary for the opening side forming is first punched out, and then the punching forming of the opening side of the car body beam is completed by one drawing, which avoids the disadvantageous situation of using rectangular sheets for drawing and then using multiple sets of inclined wedge mechanisms to punch out the complex layout of the opening side of the car body beam in blocks;

2. The application of multi-station transfer die stamping processing can easily realize high-speed automated stamping production, and the quality of stamping parts is stable, which greatly improves production efficiency;

3. Under the condition of reducing the arrangement of workstations as much as possible, the reasonable positioning, reasonable part flipping and reasonable arrangement of the wedge mechanism of each workstation of the multi-station transfer mold for the car beam structure reduce the difficulty of the later sheet metal forming numerical simulation and the workload of mold debugging, and complete the stamping processing of the highly complex car body beam efficiently and accurately.

BRIEF DESCRIPTION OF THE DRAWINGS

This manual includes the following drawings, which show the following contents:

FIG1 is a schematic diagram of the structure of a car body cross beam;

FIG2 is a schematic structural diagram of a car body cross beam from another angle;

Fig. 3 is a layout process design diagram;

FIG4 is a schematic structural diagram of a blanking die;

FIG5 is a schematic structural diagram of a blanking upper die assembly;

FIG6 is a top view of the blanking upper die assembly;

FIG7 is a schematic structural diagram of a blanking lower die assembly;

FIG8 is a top view of the blanking lower die assembly;

FIG9 is a schematic structural diagram of a first transfer mold;

FIG10 is a schematic structural diagram of a first upper mold assembly;

FIG11 is a schematic structural diagram of a first lower mold assembly;

FIG12 is a schematic diagram of the partial structure of the fifth punching and trimming station;

FIG13 is a schematic structural diagram of a first punching device;

FIG14 is a schematic structural diagram of a second punching device;

15 is a schematic structural diagram of a first punching device;

16 is a schematic structural diagram of a second blanking device;

FIG17 is a schematic structural diagram of a second transfer mold;

FIG18 is a schematic structural diagram of a second upper mold assembly;

FIG19 is a schematic structural diagram of a second lower mold assembly;

FIG20 is a schematic diagram of the partial structure of the eighth flanging station;

FIG21 is a schematic structural diagram of a third transfer mold;

FIG22 is a schematic structural diagram of a third upper mold assembly;

FIG23 is a schematic structural diagram of a third lower mold assembly;

FIG24 is a schematic diagram of the partial structure of the eleventh flanging station;

FIG25 is a schematic diagram of the structure of a sheet formed at the first blanking station;

FIG26 is a schematic diagram of the bottom structure of a car body cross beam;

The markings in the figure are: 1. blanking upper die assembly; 101. upper die plate; 102. first punch; 103. second punch; 104. third punch; 105. fourth punch; 106. first unloading plate; 107. second unloading plate; 108. guide pin; 109. insert; 2. blanking lower die assembly; 201. lower die plate; 202. first fixed plate; 203. second fixed plate; 204. third fixed plate; 205. first concave die; 206. second concave die; 207. guide block; 208. guide ruler; 3. cutting punch; 4. mounting plate; 5. third concave die; 6. window plate; 7. first upper die assembly; 701. forming block; 702. forming block; 703. fixed plate; 704. trimming knife block; 705. trimming knife block; 706. trimming knife block; 707. trimming knife block; 708, trimming knife block; 709, trimming knife block; 710, trimming knife block; 711, trimming knife block; 712, positioning pin; 713, punch; 714, stripper plate; 715, inner forming block; 716, outer forming block; 717, stripper plate; 718, forming block; 719, stripper plate; 720, second upper mold plate; 721, third upper mold plate; 722, fourth upper mold plate; 723, fifth upper mold plate; 8, first lower mold assembly; 801, stripper plate; 802, fixed seat; 803, inner forming block; 804, outer forming block; 805, inner concave mold; 806, outer concave mold; 807, forming block; 808, positioning pin; 809, concave mold; 810, second lower mold plate; 811, third lower mold plate; 812, fourth lower mold plate; 813, fifth lower mold plate; 9, second upper mold assembly; 901, forming block; 902, forming block; 903, stripper plate; 904, punch; 905, front forming block; 906, side forming block; 907, press plate; 908, stripper plate; 909, press plate; 910, forming block; 911, sixth upper mold plate; 912, seventh upper mold plate; 91 3. Eighth upper template; 914. Ninth upper template; 10. Second lower template assembly; 1001. Unloading plate; 1002. Forming block; 1003. Forming block; 1004. Front forming block; 1005. Rear forming block; 1006. Forming block; 1007. Unloading plate; 1008. Rear forming block; 1009. Front forming block; 1010. Sixth lower template; 1011. Seventh lower template; 1012. Eighth lower template; 1013. The ninth lower mold plate; 11. The third upper mold assembly; 1101. The pressing plate; 1102. The rear forming block; 1103. The front forming block; 1104. The pressing plate; 1105. The unloading plate; 1106. The forming block; 1107. The punch; 1108. The tenth upper mold plate; 1109. The eleventh upper mold plate; 1110. The twelfth upper mold plate; 12. The third lower mold assembly; 1201. The forming block; 1202. The forming block; 1203. The fixing seat; 1 204, forming block; 1205, concave die; 1207, tenth lower template; 1208, eleventh lower template; 1209, twelfth lower template; 13, first punching device; 1301, first punching drive block; 1302, first punching slide block; 1303, first punch; 14, second punching device; 1401, second punching drive block; 1402, second punching slide block; 1403, second punch; 15, first blanking device; 1501, first punching drive block; 1502, first punching slider; 1503, first trimming knife block; 16, second punching device; 1601, second punching drive block; 1602, second punching slider; 1603, second trimming knife block; 17, first flanging drive block; 18, first flanging slider; 19, first flanging punch; 20, second flanging drive block; 21, second flanging slider; 22, second flanging punch; 23, third flanging drive block; 24, third flanging slider; 25, flanging punch; 26, crossbeam main body; 27, first side plate; 28, second side plate; 29, first side flanging; 30, second side flanging; 31, third side flanging; 32, first end flanging; 33, second end flanging; 34, weight reduction hole; 35, first upper die seat; 36. The first lower die seat; 37. The second upper die seat; 38. The second lower die seat; 39. The third upper die seat; 40. The third lower die seat; a. The first blanking station; b. The second drawing station; c. The third trimming and punching station; d. The fourth flanging station; e. The fifth punching and trimming station; f. The sixth flanging station; g. The seventh forming and flanging station; h. The eighth flanging station; i. The ninth flanging station; j. The tenth flanging station; k. The eleventh flanging station; l. The twelfth punching and shaping station.

Detailed ways

The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

As shown in FIG. 1 to FIG. 24 , the present invention provides a car body cross beam processing device, comprising a blanking die, a first transfer die, a second transfer die and a third transfer die arranged in sequence according to a processing order.

The structure of the car body crossbeam is shown in Figures 1, 2 and 25. The car body crossbeam includes a crossbeam main body, a first side panel connected to one side edge of the crossbeam main body, a second side panel connected to the other side edge of the crossbeam main body, a first side flange connected to the first side panel, a second side flange connected to the second side panel, a third side flange connected to the second side flange, a first end flange connected to one end edge of the crossbeam main body and a second end flange connected to the other end edge of the crossbeam main body. The first side panel and the second side panel are arranged opposite to each other and extend toward the same side of the crossbeam main body. The first side panel and the second side panel are parallel to each other. The first side panel and the second side panel extend along the length direction of the crossbeam main body from one end of the crossbeam main body in the length direction to the other end of the crossbeam main body in the length direction. The angle between the first side panel and the second side panel and the crossbeam main body is approximately 90 degrees. The first end flange is fixedly connected to one end of the cross beam main body in the length direction, and the second end flange is fixedly connected to the other end of the cross beam main body in the length direction. The first end flange and the second end flange are arranged relative to each other, and the first end flange and the second end flange extend toward the same side of the cross beam main body as the first side plate and the second side plate. The first end flange is fixedly connected to one end of the first side plate in the length direction, and the second end flange is fixedly connected to the other end of the first side plate in the length direction. The first side flange is arranged relative to the cross beam main body, the first side flange is fixedly connected to one side edge of the first side plate, the cross beam main body is fixedly connected to the other side edge of the first side plate, and the first side flange extends from one end of the first side plate in the length direction to the other end of the first side plate in the length direction. The second side flange is fixedly connected to one side edge of the second side plate, the cross beam main body is fixedly connected to the other side edge of the second side plate, and the second side flange extends from one end of the second side plate in the length direction to the other end of the second side plate in the length direction. The third side flange is fixedly connected to one side edge of the second side flange, the second side plate is fixedly connected to the other side edge of the second side flange, the third side flange extends from one end of the second side flange in the length direction to the other end of the second side flange in the length direction of the second side flange, and the second side flange and the third side flange are located on the same side of the second side plate. Two weight-reducing holes are provided on the main body of the crossbeam, the weight-reducing holes are rectangular holes, and the weight-reducing holes are through holes set on the main body of the crossbeam along the plate thickness direction. Two first through holes are provided on the first side plate, the first through holes are circular holes, and the first through holes are through holes set on the first side plate along the plate thickness direction. Two second through holes are provided on the second side plate, the second through holes are circular holes, and the second through holes are through holes set on the second side plate along the plate thickness direction.

When processing a car body beam, the blank is first processed by a blanking die at the first blanking station to form a blank, and then the blank is processed by the first transfer die, the second transfer die and the third transfer die in sequence to finally form a car body beam. The blanking station is independently equipped with a blanking die, which does not interfere with the work of subsequent stations during grinding, has the advantages of simple structure and high processing accuracy, and helps to improve processing accuracy and processing efficiency.

As shown in Figures 3 to 8, the blanking die includes a blanking upper die assembly 1 and a blanking lower die assembly 2. The blanking upper die assembly 1 can perform reciprocating linear motion in the vertical direction relative to the blanking lower die assembly 2 to achieve a stamping action. The blanking upper die assembly 1 and the blanking lower die assembly 2 are correspondingly provided with a first blanking station. The blanking upper die assembly 1 includes a first upper die plate 101 and a first punch 102, a second punch 103, a third punch 104, a fourth punch 105, a first stripper plate 106, a second stripper plate 107 and an insert 109 arranged on the first upper die plate 101. The first punch 102, the second punch 103 The first punch 102, the second punch 103 and the third punch 104 are located on the same side of the fourth punch 105, the first punch 102, the second punch 103 and the third punch 104 pass through the first stripper plate 106, and the fourth punch 105 passes through the second stripper plate 107. The blanking lower die assembly 2 includes a first lower template 201, a first fixed plate 202 matched with the first punch 102, a second fixed plate 203 matched with the second punch 103, a third fixed plate 204 matched with the third punch 104, a first die 205 matched with the fourth punch 105, and a second die 206 matched with the insert 109. The first fixed plate 202, the second fixed plate 203, the third fixed plate 204, the first die 205 and the second die 206 are arranged on the first lower template 201, the first fixed plate 202, the second fixed plate 203 and the third fixed plate 204 are located below the first stripper plate 106, and the first die 205 and the second die 206 are located on the second stripper plate Below 107.

As shown in Fig. 4 to Fig. 8, the first punch 102, the second punch 103 and the third punch 104 are on the same straight line parallel to the first direction, the first stripper plate 106 and the second stripper plate 107 are on the same straight line parallel to the second direction, the first direction and the second direction are both horizontal directions and the first direction and the second direction are perpendicular, and during processing, the blank moves along the second direction on the blanking die. The first punch 102, the second punch 103 and the third punch 104 are all circular punches, and the first punch 102, the second punch 103 and the third punch 104 are vertically arranged on the first upper template 101, and the upper ends of the first punch 102, the second punch 103 and the third punch 104 are fixedly connected to the first upper template 101, two second punches 103 are arranged, and the two second punches 103 are located between the first punch 102 and the third punch 104, and one first punch 102 and one third punch 104 are arranged respectively. The first punch 102 and the third punch 104 are used to punch out a guide hole on the blank respectively, so that two guide holes are formed on the blank, and the two guide holes are circular holes. The second punch 103 is used to punch out the blank, and the two second punches 103 punch out two circular through holes on the blank.

As shown in Fig. 4 to Fig. 6, the first stripper plate 106 and the second stripper plate 107 are connected to the first upper template 101, the first stripper plate 106 and the second stripper plate 107 are rectangular flat plates, the first stripper plate 106 and the second stripper plate 107 are arranged horizontally, the length direction of the first stripper plate 106 is parallel to the length direction of the first stripper plate 106, the width direction of the first stripper plate 106 is parallel to the width direction of the second stripper plate 107, the first stripper plate 106 and the second stripper plate 107 are located below the first upper template 101 and the first stripper plate 106 and the second stripper plate 107 are at the same height, and the first stripper plate 106 and the second stripper plate 107 are parallel to the first upper template 101. The first stripper plate 106 has four through holes, and the four through holes are used to allow the first punch 102, the two second punches 103 and the third punch 104 to pass through respectively. The fourth punch 105 is a special-shaped punch, and the shape of the fourth punch 105 matches the shape of the sheet. The fourth punch 105 is fixedly connected to the first upper template 101, and the second unloading plate 107 is sleeved on the fourth punch 105. The second unloading plate 107 has an avoidance hole for allowing the fourth punch 105 to pass through. The avoidance hole is a through hole that penetrates the second unloading plate 107 along the thickness direction of the plate. The shape of the avoidance hole matches the shape of the fourth punch 105. The fourth punch 105 cooperates with the first die 205 to punch out the blank to obtain a sheet with a shape that meets the requirements. The shape of the sheet is shown in Figure 25.

As shown in Fig. 4, Fig. 7 and Fig. 8, the first fixing plate 202, the second fixing plate 203 and the third fixing plate 204 are fixedly arranged on the top surface of the first lower template 201, and the first fixing plate 202, the second fixing plate 203 and the third fixing plate 204 are arranged in sequence along the first direction, and the first fixing plate 202, the second fixing plate 203 and the third fixing plate 204 are used to cooperate with the first unloading plate 106 to clamp the blank to be punched. The first fixing plate 202 has a circular hole for the first punch 102 to be inserted, and the circular hole is a through hole that is vertically penetrated on the first fixing plate 202. The second fixing plate 203 has two circular holes for the second punch 103 to be inserted, and the circular holes are through holes that are vertically penetrated on the second fixing plate 203. The third fixing plate 204 has a circular hole for the third punch 104 to be inserted, and the circular hole is a through hole that is vertically penetrated on the third fixing plate 204. The first lower template 201 has a blanking hole that is connected to the circular holes on the first fixed plate 202, the second fixed plate 203 and the third fixed plate 204 and is used to allow the waste generated by punching to pass through. The blanking hole is a through hole that is vertically penetrated on the first lower template 201. The first die 205 is fixedly set on the top surface of the first lower template 201. The first fixed plate 202, the second fixed plate 203 and the third fixed plate 204 are located on the same side of the first die 205. The first die 205 is used to cooperate with the second stripper plate 107 to clamp the blank to be punched. The first die 205 is also used to cooperate with the fourth punch 105 to achieve blanking of the blank. The center of the first die 205 has a forming hole for the fourth punch 105 to be inserted. The shape of the forming hole matches the shape of the fourth punch 105. The forming hole is not a through hole vertically penetrated on the first die 205. The first lower template 201 has a blanking hole which is connected to the forming hole on the first concave die 205 and is used to allow blanking produced by punching to pass through. The blanking hole is a through hole which is vertically penetrated on the first lower template 201 .

As shown in Fig. 4 to Fig. 8, the second die 206 is fixedly arranged on the top surface of the first lower mold plate 201, two second dies 206 are provided and the two second dies 206 are on the same straight line parallel to the first direction, the second die 206 is located on the inner side of the first die 205, and the first die 205 is provided with a groove for accommodating the second die 206. Correspondingly, two inserts 109 are also provided, the two inserts 109 are on the same straight line parallel to the first direction, the two inserts 109 are matched with one second die 206 respectively, the upper end of the insert 109 is fixedly connected to the first upper mold plate 101, and the fourth punch 105 has a groove for the insert 109 to accommodate the insert 109. The two inserts 109 cooperate with the two second dies 206 to punch the blank on both sides of the blank, and cooperate with the fourth punch 105 and the first die 205 to form a sheet, and the sheet is separated from the part where the guide hole on the blank is located.

As shown in Fig. 4 to Fig. 8, the lower die assembly 2 further includes a guide block 207 disposed on the first lower die plate 201 and used to guide the blank. Two guide blocks 207 are provided and the two guide blocks 207 are located on the same straight line parallel to the first direction. In the second direction, the first fixed plate 202 is located between the first die 205 and one of the guide blocks 207, and the third fixed plate 204 is located between the first die 205 and the other guide block 207. The guide block 207 is horizontally disposed and has a certain length. The length direction of the guide block 207 is parallel to the second direction. The guide block 207 extends toward the outside of the first lower die plate 201. One end of the guide block 207 in the length direction is fixedly connected to the first lower die plate 201. The two guide blocks 207 cooperate to guide the blank to move toward the punch along the second direction, and the blank is inserted between the two guide blocks 207. The guide block 207 has a first guide groove for embedding the blank. The first guide groove is a rectangular groove extending along the length direction of the guide block 207. The first guide groove forms an opening on the side plane of the guide block 207 which is perpendicular to the first direction. The openings on the two guide blocks 207 are opposite to each other. The two side edges of the blank are respectively embedded in a first guide groove on a guide block 207 to ensure stable operation of the blank.

As shown in FIGS. 4 to 8 , the lower die assembly 2 further includes a guide ruler 208 disposed on the first die 205 and used to guide the blank. Two guide rulers 208 are provided and the two guide rulers 208 are located on the same straight line parallel to the first direction. The two guide rulers 208 are fixedly disposed on the top of the first die 205 and extend toward the top of the first die 205. Each guide ruler 208 is located on the same straight line parallel to the second direction with a guide block 207. In the second direction, one guide ruler 208 is located between the first fixed plate 202 and one second die 206, and the other guide ruler 208 is located between the third fixed plate 204 and another second die 206. The two guide rulers 208 cooperate to guide the blank to move along the second direction, and the blank is inserted between the two guide rulers 208. The guide ruler 208 has a second guide groove for the blank to be embedded. The second guide groove is a rectangular groove extending along the length direction of the guide ruler 208. The second guide groove forms an opening on the side plane of the guide ruler 208 which is perpendicular to the first direction. The openings on the two guide rulers 208 are opposite to each other. The two side edges of the blank are respectively embedded in the second guide groove on the guide ruler 208 to ensure stable operation of the blank.

As shown in FIGS. 4 to 8 , the upper die assembly 1 further includes a guide pin 108 disposed on the first upper die plate 101. The guide pin 108 is disposed vertically and the upper end of the guide pin 108 is fixedly connected to the first upper die plate 101. The guide pin 108 is used to be inserted into the guide hole formed on the blank to play a positioning role, and cooperates with the guide ruler 208 and the guide block 207 to achieve the precise positioning and spacing of the blank, which helps to improve the processing accuracy. The guide pin 108 is a cylinder, two guide pins 108 are provided and the two guide pins 108 are on the same straight line parallel to the second direction, and the second concave die 206 has a circular hole for the guide pin 108 to be inserted.

As shown in Fig. 4 to Fig. 8, the blanking die for automobile body sheet metal of the present invention further includes a cutting device for cutting the blank, and the cutting device includes a mounting plate 4 arranged on the first upper template 101, a cutting punch 3 arranged on the mounting plate 4, a third die 5 arranged on the first lower template 201 and matched with the cutting punch 3, and a window plate 6 arranged on the second stripper plate 107 and located above the third die 5. The mounting plate 4 is vertically arranged, the upper end of the mounting plate 4 is fixedly connected to the first upper template 101, the cutting punch 3 is fixedly arranged at the lower end of the mounting plate 4, the cutting punch 3 is located on the outside of the second stripper plate 107, and in the second direction, the second stripper plate 107 is located between the cutting punch 3 and the first stripper plate 106. The third die 5 is fixedly arranged on the top surface of the first lower mold plate 201, and the top surface of the third die 5 is flush with the top of the first die 205. The third die 5 is located on one side of the first die 205, and the first fixed plate 202, the second fixed plate 203 and the third fixed plate 204 are located on the other side of the first die 205. The window plate 6 is located directly above the third die 5, and the window plate 6 is used to cooperate with the third die 5 to clamp the blank. The third die 5 cooperates with the cutting punch 3 to cut the blank.

As shown in Figures 4 to 8, two cutting devices are provided and the two cutting devices are located on the same straight line parallel to the first direction. There is a certain distance between the two cutting devices. One of the cutting devices and the first fixed plate 202 are located on the same straight line parallel to the second direction, and the other cutting device and the third fixed plate 204 are located on the same straight line parallel to the second direction. The two cutting devices cooperate to cut the blank together.

As shown in FIG. 25 , the sheet is a sheet-like structure having two positioning holes. The positioning holes are circular holes and are through holes that penetrate the sheet along the thickness direction of the sheet. The two positioning holes are used for positioning during subsequent processing.

As shown in Figures 9 to 11, the first transfer mold includes a first upper mold assembly and a first lower mold assembly. The first upper mold assembly can perform reciprocating linear motion in the vertical direction relative to the first lower mold assembly to realize the stamping action. The first upper mold assembly and the first lower mold assembly are respectively provided with four stations, which are the second drawing station, the third trimming and punching station, the fourth flanging station and the fifth punching and trimming station in the order of processing. After the sheet is obtained at the first blanking station, the sheet is transferred to the first transfer mold for processing. On the first transfer mold, the sheet is processed in the second drawing station, the third trimming and punching station, the fourth flanging station and the fifth punching and trimming station in sequence. The second drawing station, the third trimming and punching station, the fourth flanging station and the fifth punching and trimming station are arranged in sequence along the second direction on the first transfer mold. The blanking mold is not connected to the first transfer mold. The two are two independent sets of molds. The sheet can be manually transferred to the first transfer mold.

As shown in Figures 9 to 11, on the first transfer mold, the blank is first processed at the second drawing station, the purpose is to draw out the curved surface shape of the workpiece, the shape of the workpiece formed after the drawing process is shown in Figure 3, and the cross beam main plate body and the second side plate are initially formed on the workpiece. Corresponding to the second drawing station, the first upper mold assembly includes a second upper mold plate 720 and two forming blocks 701 and 702 arranged on the second upper mold plate 720, the first lower mold assembly includes a second lower mold plate 810, a stripper plate 801 and a fixed seat 802 arranged on the second lower mold plate 810, an inner forming block 803 arranged on the fixed seat 802 and matched with the two forming blocks 701 and 702 of the first upper mold assembly, and two outer forming blocks 804 arranged on the stripper plate 801 and matched with the two forming blocks 701 and 702 of the first upper mold assembly, and the inner forming block 803 is located between the two outer forming blocks 804. The second upper template 720 is horizontally arranged, the two forming blocks 701, 702 are fixedly connected to the second upper template 720 and the two forming blocks 701, 702 are located below the second upper template 720, the forming blocks 701 and 702 are arranged side by side and the forming blocks 701 and 702 are on the same straight line parallel to the first direction. The second lower template 810 is horizontally arranged, the unloading plate 801 is horizontally arranged, the unloading plate 801 is located above the second lower template 810, the unloading plate 801 is installed on the second lower template 810 through a nitrogen spring, the unloading plate 801 can move in the vertical direction relative to the second lower template 810, the fixed seat 802 is fixedly connected to the second lower template 810 and the fixed seat 802 is located above the second lower template 810, the unloading plate 801 is sleeved on the fixed seat 802, and a through hole is provided at the center of the unloading plate 801 for the fixed seat 802 to pass through, the inner forming block 803 is fixedly installed on the top surface of the fixed seat 802, the top surface of the inner forming block 803 is the forming surface, the inner forming block 803 is located directly below the forming block 701 and the forming block 702, and the bottom surfaces of the forming block 701 and the forming block 702 are the forming surfaces. Two outer forming blocks 804 are fixedly mounted on the unloading plate 801. The two outer forming blocks 804 and the inner forming block 803 are on the same straight line parallel to the second direction. The two outer forming blocks 804 are respectively located on one side of the inner forming block 803. The two outer forming blocks 804 are located directly below the forming blocks 701 and 702. The top surface of the outer forming blocks 804 is a forming surface. The height of the top surface of the two outer forming blocks 804 is less than the height of the top surface of the inner forming block 803. The forming blocks 701 and 702 cooperate with the two outer forming blocks 804 and one inner forming block 803 to perform a drawing process on the sheet, and the formed product is a boxed structure.

As shown in Figures 9 to 11, on the first transfer die, the sheet is first processed at the second drawing station, and then the workpiece is blanked and punched at the third trimming and punching station to shear off the excess part at the lower edge of the workpiece and preliminarily form weight-reducing holes on the workpiece. Corresponding to the third trimming and punching station, the first upper mold assembly includes a third upper mold plate 721, a fixed plate 703 arranged on the third upper mold plate 721, a stripping plate 719, a positioning pin 712 and a punch 713, and eight trimming knife blocks 704, 705, 706, 707, 708, 709, 710, 711 arranged on the fixed plate 703, the first lower mold assembly includes a third lower mold plate 811 and an inner concave mold 805 and two outer concave molds 806 arranged on the third lower mold plate 811, the stripping plate 719, the positioning pin 712 and the punch 713 of the first upper mold assembly cooperate with the inner concave mold 805, the eight trimming knife blocks 704, 705, 706, 707, 708, 709, 710, 711 of the first upper mold assembly cooperate with the two outer concave molds 806, and the inner concave mold 805 is located between the two outer concave molds 806. The third upper template 721 is horizontally arranged, and the third upper template 721 is at the same height as the second upper template 720. The fixed plate 703 is fixedly connected to the third upper template 721 and the fixed plate 703 is located below the third upper template 721. The unloading plate 719 is connected to the third upper template 721 through a nitrogen spring, and the unloading plate 719 is located below the third upper template 721. The fixed plate 703 is sleeved on the unloading plate 719, and the fixed plate 703 has a through hole for the unloading plate 719 to pass through. The unloading plate 719 can move in the vertical direction relative to the third upper template 721. Two punches 713 are provided and the two punches 713 are arranged vertically. The stripper plate 719 has a through hole for the two punches 713 to pass through. The two punches 713 are on the same straight line parallel to the first direction. The punch 713 is located below the third upper template 721. The upper end of the punch 713 is fixedly connected to the third upper template 721. The punch 713 is used to punch out two rectangular holes on the top surface of the workpiece to form two weight-reducing holes. Two locating pins 712 are provided and the two locating pins 712 are arranged vertically. The stripper plate 719 has a through hole for the two locating pins 712 to pass through. The locating pins 712 are on the same straight line parallel to the first direction. The two punches 713 are located between the two locating pins 712. The upper end of the locating pin 712 is fixedly connected to the third upper template 721. The two locating pins 712 are respectively inserted into a locating hole on the workpiece, thereby positioning the workpiece and ensuring processing accuracy. The eight trimming blade blocks 704, 705, 706, 707, 708, 709, 710, 711 are fixedly connected to the fixing plate 703. 709, 710, and 711 are located below the fixed plate 703, and the eight trimming knife blocks 704, 705, 706, 707, 708, 709, 710, and 711 are arranged in two rows, wherein the trimming knife block 704, the trimming knife block 705, the trimming knife block 706, and the trimming knife block 707 are on the same straight line parallel to the first direction, the trimming knife block 708, the trimming knife block 709, the trimming knife block 710, and the trimming knife block 711 are on another straight line parallel to the first direction, the trimming knife block 704, the trimming knife block 705, the trimming knife block 706, and the trimming knife block 707 are located on one side of the unloading plate 719, and the trimming knife block 708, the trimming knife block 709, the trimming knife block 710, and the trimming knife block 711 are located on the other side of the unloading plate 719. The third lower template 811 is horizontally arranged, the inner concave die 805 and the two outer concave dies 806 are fixedly installed on the third lower template 811 and the inner concave die 805 and the two outer concave dies 806 are located above the third lower template 811, the inner concave die 805 and the two outer concave dies 806 are on the same straight line parallel to the second direction, the inner concave die 805 is located directly below the unloading plate 719 and the shape of the inner concave die 805 matches the shape of the unloading plate 719, the inner concave die 805 and the unloading plate 719 cooperate to clamp the workpiece, and the workpiece is sleeved on the inner concave die 805. The two outer concave dies 806 are respectively located on one side of the inner concave die 805, one of the outer concave dies 806 is located below the trimming knife block 708, the trimming knife block 709, the trimming knife block 710 and the trimming knife block 711, and the outer concave die 806 cooperates with the trimming knife block 704, the trimming knife block 705, the trimming knife block 706 and the trimming knife block 707 to punch out the edge of one side of the workpiece; the other outer concave die 806 is located below the trimming knife block 704, the trimming knife block 705, the trimming knife block 706 and the trimming knife block 707, and the outer concave die 806 cooperates with the trimming knife block 704, the trimming knife block 705, the trimming knife block 706 and the trimming knife block 707 to punch out the edge of the other side of the workpiece, and finally shear off the excess parts at the edges of the opposite sides of the workpiece.

As shown in Figures 9 to 11, on the first transfer die, the blank is first processed at the second drawing station, then the workpiece is blanked and punched at the third trimming and punching station, and then the workpiece is flanging formed at the fourth flanging station. Corresponding to the fourth flanging station, the first upper die assembly includes a fourth upper die plate 722, a stripper plate 714 and two outer forming blocks 716 disposed on the fourth upper die plate 722, and an inner forming block 715 disposed on the stripper plate 714, the inner forming block 714 is located between the two outer forming blocks 716, the first lower die assembly includes a fourth lower die 812, a forming block 807 and two positioning pins 808 disposed on the fourth lower die 812, and the inner forming block 715 and two outer forming blocks 716 of the first upper die assembly cooperate with the forming block 807. The fourth upper template 722 is horizontally arranged, and the fourth upper template 722 is at the same height as the second upper template 720. The unloading plate 714 is connected to the fourth upper template 722 through a nitrogen spring, and the unloading plate 714 is located below the fourth upper template 722. The unloading plate 714 can move in the vertical direction relative to the fourth upper template 722. The inner forming block 715 is fixedly installed on the bottom surface of the fourth upper template 722, and the bottom surface of the inner forming block 715 is a forming surface. The inner forming block 715 is located directly above the forming block 807. Two outer forming blocks 716 are fixedly installed on the bottom surface of the fourth upper template 722, and the bottom surface of the outer forming block 716 is a forming surface. The two outer forming blocks 716 and the inner forming block 715 are on the same straight line parallel to the second direction, and the two outer forming blocks 716 are respectively located on one side of the inner forming block 715, and the two outer forming blocks 716 are located directly above the forming block 807. The fourth lower mold 812 is horizontally arranged, and the fourth lower mold 812 is at the same height as the second lower mold 810 and the third lower mold 811. The forming block 807 is fixedly mounted on the fourth lower mold 812 and is located above the fourth lower mold 812. The top surface of the forming block 807 is the forming surface. The inner forming block 715 cooperates with the forming block 807 below to clamp the workpiece, and the two outer forming blocks 716 cooperate with the forming block 807 below to perform flanging forming on the workpiece, so that the lower edge of one side of the workpiece is bent downward by 90 degrees, so as to preliminarily form a first side plate and a second side flanging on the workpiece.

As shown in Figures 9 to 11, on the first transfer die, the blank is first processed at the second drawing station, then the workpiece is blanked and punched at the third trimming and punching station, then the workpiece is flanging formed at the fourth flanging station, and finally the blanking and punching are performed at the fifth punching and trimming station. Corresponding to the fifth punching and trimming station, the first upper die assembly includes a fifth upper die plate 723, a stripper plate 717 disposed on the fifth upper die plate 723, and a forming block 718 disposed on the stripper plate 717, and the first lower die assembly includes a fifth lower die plate 813 and a concave die 809 disposed on the fifth lower die plate 813, and the forming block 718 disposed on the stripper plate 717 cooperates with the concave die 809 disposed on the fifth lower die plate 813.

The fifth upper template 723 is horizontally arranged, and the fifth upper template 723 is at the same height as the second upper template 720. The stripper plate 717 is connected to the fifth upper template 723 through a nitrogen spring, and the stripper plate 717 is located below the fifth upper template 723. The stripper plate 717 can move in the vertical direction relative to the fifth upper template 723. The forming block 718 is fixedly installed on the bottom surface of the stripper plate 717, and the bottom surface of the forming block 718 is the forming surface. The forming block 718 is located directly above the concave mold 809. The fifth lower template 813 is horizontally arranged, and the fifth lower template 813 is at the same height as the second lower template 810 and the third lower template 811. The concave mold 809 is fixedly installed on the fifth lower template 813 and the concave mold 809 is located above the fifth lower template 813. The top surface of the concave mold 809 is the forming surface. The forming block 718 cooperates with the concave mold 809 below to clamp the workpiece. The first transfer die also includes a first punching device 13, a second punching device 14, a first punching device 15, and a second punching device 16. The first punching device 13, the second punching device 14, the first punching device 15, and the second punching device 16 are connected to the first upper die assembly and the first lower die assembly. The first punching device 13 and the second punching device 14 are arranged relative to each other, and the first punching device 15 and the second punching device 16 are arranged relative to each other. The concave die 809 arranged on the fifth upper die plate 723 is located between the first punching device 13 and the second punching device 14, and the concave die 809 arranged on the fifth upper die plate 723 is also located between the first punching device 15 and the second punching device 16. The first punching device 13, the concave die 809, and the second punching device 14 are located on the same straight line parallel to the second direction, and the first punching device 15, the concave die 809, and the second punching device 16 are located on the same straight line parallel to the first direction. The first punching device 15 and the second punching device 16 punch the edges of the workpiece at both ends in the length direction, and cut off the excess parts at the edges of the opposite ends of the workpiece. The first punching device 13 and the second punching device 14 are used to punch the workpiece. The first punching device 13 processes two second through holes on the second side plate of the workpiece, and the second punching device 14 processes two first through holes on the first side plate of the workpiece.

As shown in Fig. 12 and Fig. 13, the first punching device 13 comprises a first punching slider 1302 movably arranged on the fifth lower template 813, a first punching driving block 1301 fixedly arranged on the fifth upper template 723 and used to drive the first punching slider 1302, and a first punch 1303 fixedly arranged on the first punching slider 1302, the first punch 1303 cooperates with the concave die 809, the concave die 809 has a circular hole for the first punch 1303 to be inserted, and the first punch 1303 is a circular punch. The first punching slider 1302 is slidably connected to the fifth lower template 813, the moving direction of the first punching slider 1302 is parallel to the second direction, the first punching driving block 1301 and the first punching slider 1302 form an inclined wedge mechanism, the first punching driving block 1301 contacts the first punching slider 1302, and the axis of the first punch 1303 is parallel to the second direction. Two first punching punches 1303 are arranged in parallel, and the two first punching punches 1303 are arranged side by side and at the same height, and the two first punching punches 1303 are on the same straight line parallel to the first direction. When punching, the fifth upper template 723 drives the first punching drive block 1301 to make a linear motion in the vertical direction. Under the action of the first punching drive block 1301, the first punching slider 1302 drives the two first punching punches 1303 to make a linear motion in the horizontal direction toward the die 809, and finally the two first punching punches 1303 punch holes on the workpiece, punching out two circular second through holes.

As shown in Fig. 12 and Fig. 14, the second punching device 14 comprises a second punching slider 1402 movably arranged on the fifth lower template 813, a second punching driving block 1401 fixedly arranged on the fifth upper template 723 and used to drive the second punching slider 1402, and a second punch 1403 fixedly arranged on the second punching slider 1402, the second punch 1403 cooperates with the concave die 809, and the concave die 809 has a hole for inserting the second punch 1403. The second punching slider 1402 is slidably connected to the fifth lower template 813, the moving direction of the second punching slider 1402 is parallel to the second direction and the moving direction of the second punching slider 1402 is opposite to the moving direction of the first punching slider 1302, the second punching driving block 1401 and the second punching slider 1402 form an inclined wedge mechanism, the second punching driving block 1401 contacts the second punching slider 1402, and the axis of the second punch 1403 is parallel to the second direction. Two second punching punches 1403 are arranged in parallel, and the two second punching punches 1403 are arranged side by side and at the same height, and the two second punching punches 1403 are on the same straight line parallel to the first direction. When punching, the fifth upper template 723 drives the second punching drive block 1401 to make a linear motion in the vertical direction. Under the action of the second punching drive block 1401, the second punching slider 1402 drives the two second punching punches 1403 to make a linear motion in the horizontal direction toward the die 809, and finally the two second punching punches 1403 punch holes on the workpiece to punch out two first through holes.

As shown in Fig. 12 and Fig. 15, the first punching device 15 comprises a first punching slider 1502 movably arranged on the fifth lower template 813, a first punching driving block 1501 fixedly arranged on the fifth upper template 723 and used to drive the first punching slider 1502, and a first trimming knife block 1503 fixedly arranged on the first punching slider 1502, and the first trimming knife block 1503 cooperates with the die 809. The first punching slider 1502 is slidably connected to the fifth lower template 813, the moving direction of the first punching slider 1502 is horizontal, the first punching driving block 1501 and the first punching slider 1502 form an inclined wedge mechanism, and the first punching driving block 1501 contacts the first punching slider 1502. During the punching process, the fifth upper template 723 drives the first punching drive block 1501 to make a linear motion in the vertical direction. Under the action of the first punching drive block 1501, the first punching slider 1502 drives the first trimming knife block 1503 to make a linear motion in the horizontal direction toward the die 809. Finally, the first trimming knife block 1503 cooperates with the die 809 to punch the lower edge of the end of the workpiece and cut off the excess part at the lower edge of the end of the workpiece.

As shown in Fig. 12 and Fig. 16, the second punching device 16 comprises a second punching slider 1602 movably arranged on the fifth lower template 813, a second punching driving block 1601 fixedly arranged on the fifth upper template 723 and used to drive the second punching slider 1602, and a second trimming knife block 1603 fixedly arranged on the second punching slider 1602, and the second trimming knife block 1603 cooperates with the die 809. The second punching slider 1602 is slidably connected to the fifth lower template 813, the moving direction of the second punching slider 1602 is horizontal, the second punching driving block 1601 and the second punching slider 1602 form an inclined wedge mechanism, and the second punching driving block 1601 contacts the second punching slider 1602. During the punching process, the fifth upper template 723 drives the second punching drive block 1601 to make a linear motion in the vertical direction. Under the action of the second punching drive block 1601, the second punching slider 1602 drives the second trimming knife block 1603 to make a linear motion in the horizontal direction toward the die 809. Finally, the second trimming knife block 1603 cooperates with the die 809 to punch the lower edge of the end of the workpiece and cut off the excess part at the lower edge of the end of the workpiece.

As shown in FIG9 , the first transfer mold further includes a first upper mold base 35 and a first lower mold base 36. The first upper mold base 35 and the first lower mold base 36 have a certain length and width. The length direction of the first upper mold base 35 and the first lower mold base 36 is parallel to the second direction. The width direction of the first upper mold base 35 and the first lower mold base 36 is parallel to the first direction. The second upper mold plate 720, the third upper mold plate 721, the fourth upper mold plate 722 and the fifth upper mold plate 723 are arranged in sequence along the length direction of the first upper mold base 35. The second upper mold plate 720, the third upper mold plate 721, the fourth upper mold plate 722 and the fifth upper mold plate 723 are arranged in sequence along the length direction of the first upper mold base 35. and the fifth upper template 723 are fixedly connected to the first upper mold base 35, the second upper template 720, the third upper template 721, the fourth upper template 722 and the fifth upper template 723 are located below the first upper mold base 35, and the first upper mold base 35 drives the second upper template 720, the third upper template 721, the fourth upper template 722 and the fifth upper template 723 to move synchronously in the vertical direction, the second lower template 810, the third lower template 811, the fourth lower template 812 and the fifth lower template 813 are arranged in sequence along the length direction of the first lower mold base 36, and the second lower template 810, the third lower template 811, the fourth lower template 812 and the fifth lower template 813 are fixedly connected to the first lower mold base 36, and the second lower template 810, the third lower template 811, the fourth lower template 812 and the fifth lower template 813 are located above the first lower mold base 36.

As shown in Figures 17 to 19, the second transfer mold includes a second upper mold assembly and a second lower mold assembly. The second upper mold assembly can perform reciprocating linear motion in the vertical direction relative to the second lower mold assembly to achieve stamping action. The second upper mold assembly and the second lower mold assembly are respectively provided with four stations, which are the sixth flanging station, the seventh forming and flanging station, the eighth flanging station and the ninth flanging station in the order of processing. After the workpiece is processed on the first transfer mold, the workpiece is transferred to the second transfer mold for further processing. On the second transfer mold, the workpiece is processed in the sixth flanging station, the seventh forming and flanging station, the eighth flanging station and the ninth flanging station in sequence. The sixth flanging station, the seventh forming and flanging station, the eighth flanging station and the ninth flanging station are arranged in sequence along the second direction on the second transfer mold. The second transfer mold is not connected to the first transfer mold. The two are two independent sets of molds. The workpiece can be manually transferred to the second transfer mold.

As shown in Figures 17 to 19, on the second transfer mold, the workpiece is first flanged at the sixth flange station. Corresponding to the sixth flange station, the second upper mold assembly includes a sixth upper mold plate 911 and two forming blocks 901 and 902 disposed on the sixth upper mold plate 911, and the second lower mold assembly includes a sixth lower mold plate 1010, a stripper plate 1001 disposed on the sixth lower mold plate 1010, a forming block 1002 disposed on the stripper plate 1001, and a forming block 1003 disposed on the sixth lower mold plate 1010. The two forming blocks 901 and 902 of the second upper mold assembly cooperate with the two forming blocks 1002 and 1003 of the second lower mold assembly to perform flange forming on the workpiece. The sixth upper template 911 is horizontally arranged, and the forming blocks 901 and 902 are fixedly mounted on the bottom surface of the sixth upper template 911. The bottom surfaces of the forming blocks 901 and 902 are forming surfaces. The forming blocks 901 and 902 are located on the same straight line parallel to the second direction. The forming blocks 901 and 902 have a certain length, and the length direction of the forming blocks 901 and 902 is parallel to the first direction. The sixth lower template 1010 is horizontally arranged, and the unloading plate 1001 is connected to the sixth lower template 1010 through a nitrogen spring. The unloading plate 1001 is located above the sixth lower template 1010, and the unloading plate 1001 can move in the vertical direction relative to the sixth lower template 1010. The forming block 1002 is fixedly mounted on the top surface of the unloading plate 1001, and the forming block 1003 is fixedly mounted on the top surface of the sixth lower template 1010. The top surfaces of the forming blocks 1002 and 1003 are forming surfaces. The forming blocks 1002 and 1003 are on the same straight line parallel to the second direction. The forming blocks 1002 and 1003 have a certain length and the length direction of the forming blocks 1002 and 1003 is parallel to the first direction. In the second direction, the forming block 1002 is located between the forming block 1003 and the seventh forming and flanging station. The forming block 1002 is located directly below the forming blocks 901 and 902, and the forming block 1003 is located below the side of the forming block 902. The forming block 1002 cooperates with the forming block 901 to clamp the workpiece, and the forming block 1003 cooperates with the forming block 902 to perform flanging forming on the workpiece, so as to preliminarily form a third side flanging on the workpiece.

As shown in Figures 17 to 19, on the second transfer mold, the workpiece is firstly flanged at the sixth flanging station, and then flanged at the seventh forming and flanging station. Corresponding to the seventh forming and flanging station, the second upper mold assembly includes the seventh upper mold plate 912, a stripper plate 903 arranged on the seventh upper mold plate 912, two punches 904, a front forming block 905 and two side forming blocks 906, and a press plate 907 arranged on the stripper plate 903, and the second lower mold assembly includes the seventh lower mold plate 1011 and the front forming block 1004 and the rear forming block 1005 arranged on the seventh lower mold plate 1011. The seventh upper mold plate 912 is arranged horizontally, and the seventh upper mold plate 912 is at the same height as the sixth upper mold plate 911. The stripper plate 903 is connected to the seventh upper mold plate 912 through a nitrogen spring, and the stripper plate 903 is located below the seventh upper mold plate 912. The stripper plate 914 can move in the vertical direction relative to the seventh upper mold plate 912. The pressing plate 907 is fixedly mounted on the bottom surface of the unloading plate 714, the pressing plate 907 is located below the unloading plate 714, and the bottom surface of the pressing plate 907 is a molding surface for fitting with the top surface of the main body of the cross beam of the workpiece. The front forming block 905 is fixedly mounted on the top surface of the seventh lower template 1011, the front forming block 905 is located below the seventh lower template 1011, and the bottom surface of the front forming block 905 is a molding surface for fitting with the third side flange and the second side flange of the workpiece. The two side forming blocks 906 are fixedly mounted on the top surface of the seventh lower template 1011, the two side forming blocks 906 are located below the seventh lower template 1011, and the bottom surfaces of the two side forming blocks 906 are molding surfaces for fitting with the end surface of the workpiece. The two side forming blocks 906 and the pressing plate 907 are on the same straight line parallel to the first direction, and the pressing plate 907 is located between the two side forming blocks 906. The seventh lower template 1011 is horizontally arranged, and the seventh lower template 1011 is at the same height as the sixth lower template 1010. The front forming block 1004 and the rear forming block 1005 are fixedly installed on the seventh lower template 1011 and are located above the seventh lower template 1011. The top surfaces of the front forming block 1004 and the rear forming block 1005 are forming surfaces. The front forming block 1004 and the rear forming block 1005 are located on the same straight line parallel to the second direction. The front forming block 1004 and the rear forming block 1005 have a certain length and the length direction of the front forming block 1004 and the rear forming block 1005 is parallel to the first direction. In the second direction, the front forming block 1004 is located between the rear forming block 1005 and the sixth flanging station. The front forming block 1004 of the second lower die assembly is located below the front forming block 905 of the second upper die assembly and the two front forming blocks 905 and 1004 cooperate to clamp the workpiece. The rear forming block 1005 is located below the pressure plate 907 and the two side forming blocks 906 and the rear forming block 1005 cooperates with the pressure plate 907 to clamp the workpiece. The rear forming block 1005 cooperates with the two side forming blocks 906 to perform flanging molding on both ends of the workpiece to preliminarily form a first end flanging and a second end flanging on the workpiece. The two punches 904 are fixedly mounted on the bottom surface of the seventh upper die plate 912, the two punches 904 are vertically arranged, the upper ends of the two punches 904 are fixedly connected to the seventh upper die plate 912, the two punches 904 are on the same straight line parallel to the first direction, and the pressure plate 907 and the discharge plate 714 have two through holes for the two punches 904 to pass through. The two punches 904 are respectively used to be inserted into a lightening hole on the workpiece, to perform flanging on the edge of the lightening hole, and to form an inner flanging on the edge of the lightening hole.

As shown in Figures 17 to 19, on the second transfer mold, the workpiece is firstly flanged at the sixth flanging station, then flanged at the seventh forming and flanging station, and then flanged again at the eighth flanging station. Corresponding to the eighth flanging station, the second upper mold assembly includes an eighth upper mold plate 913, a stripper plate 908 disposed on the eighth upper mold plate 913, and a press plate 909 disposed on the stripper plate 908, and the second lower mold assembly includes an eighth lower mold plate 1012 and a forming block 1006 disposed on the eighth lower mold plate 1012 and matched with the press plate 909. The eighth upper mold plate 913 is horizontally arranged, the eighth upper mold plate 913 and the seventh upper mold plate 912 are at the same height, the stripper plate 908 is horizontally arranged and is located below the eighth upper mold plate 913, the stripper plate 908 is connected to the eighth upper mold plate 913 through a nitrogen spring, and the stripper plate 908 can move in the vertical direction relative to the eighth upper mold plate 913. The pressing plate 909 is fixedly mounted on the bottom surface of the unloading plate 908, and the pressing plate 909 is located below the unloading plate 908. The bottom surface of the pressing plate 909 is a molding surface for fitting with the top surface of the cross beam main body of the workpiece. The eighth lower template 1012 is horizontally arranged, and the eighth lower template 1012 is at the same height as the seventh lower template 1011. The forming block 1006 is fixedly mounted on the eighth lower template 1012 and the forming block 1006 is located above the eighth lower template 1012, and the top surface of the forming block 1006 is a molding surface. When the workpiece is flanging, the pressing plate 909 cooperates with the forming block 1006 below to clamp the workpiece. The second transfer mold also includes a first flanging device and a second flanging device, which are connected to the second upper mold assembly and the second lower mold assembly and are arranged relatively to each other, and the forming block 1006 is located between the first flanging device and the second flanging device, and the forming block 1006 and the first flanging device and the second flanging device are on the same straight line parallel to the second direction, and in the vertical direction, the first flanging device and the second flanging device are located on the eighth upper mold plate 913 and the eighth lower mold plate 1012.

As shown in FIG. 20 , the first flanging device includes a first flanging slider 18 movably disposed on the eighth lower template 1012, a first flanging driving block 17 fixedly disposed on the eighth upper template 913 and used to drive the first flanging slider 18, and a first flanging punch 19 fixedly disposed on the first flanging slider 18. The first flanging punch 19 cooperates with the forming block 1006. The forming block 1006 has a round hole for inserting the first flanging punch 19. The first flanging punch 19 is a round punch. The first flanging slider 18 is slidably connected to the eighth lower template 1012. The moving direction of the first flanging slider 18 is parallel to the second direction. The first flanging driving block 17 and the first flanging slider 18 form an inclined wedge mechanism. The first flanging driving block 17 contacts the first flanging slider 18. The axis of the first flanging punch 19 is parallel to the second direction. Two first flanging punches 19 are arranged in parallel, the two first flanging punches 19 are arranged side by side and the two first flanging punches 19 are at the same height, and the two first flanging punches 19 are on the same straight line parallel to the first direction. The two first flanging punches 19 are respectively used to be inserted into a second through hole on the workpiece, and the edge of the second through hole is flanging-formed, and an inner flanging is formed at the edge of the second through hole. During processing, the eighth upper template 913 drives the first flanging driving block 17 to move linearly in the vertical direction. Under the action of the first flanging driving block 17, the first flanging slider 18 drives the two first flanging punches 19 to move linearly in the horizontal direction toward the forming block 1006, and finally the two first flanging punches 19 form inner flangings at the edges of the two second through holes of the workpiece, and finally form the second side plate.

As shown in FIG20 , the second flanging device includes a second flanging slider 21 movably arranged on the eighth lower template 1012, a second flanging driving block 20 fixedly arranged on the eighth upper template 913 and used to drive the second flanging slider 21, and a second flanging punch 22 fixedly arranged on the second flanging slider 21. The second flanging punch 22 cooperates with the forming block 1006. The forming block 1006 has a round hole for inserting the second flanging punch 22. The second flanging punch 22 is a round punch. The second flanging slider 21 is slidably connected to the eighth lower template 1012. The moving direction of the second flanging slider 21 is parallel to the second direction. The second flanging driving block 20 and the second flanging slider 21 form an inclined wedge mechanism. The second flanging driving block 20 contacts the second flanging slider 21. The axis of the second flanging punch 22 is parallel to the second direction. Two second flanging punches 22 are arranged in parallel, the two second flanging punches 22 are arranged side by side and the two second flanging punches 22 are at the same height, and the two second flanging punches 22 are on the same straight line parallel to the first direction. The two second flanging punches 22 are respectively used to be inserted into a second through hole on the workpiece, and the edges of the second through holes are flanging-formed, and an inner flanging is formed at the edge of the second through hole. During processing, the eighth upper template 913 drives the second flanging driving block 20 to move linearly in the vertical direction. Under the action of the second flanging driving block 20, the second flanging slider 21 drives the two second flanging punches 22 to move linearly in the horizontal direction toward the forming block 1006, and finally the two second flanging punches 22 form inner flangings at the edges of the two first through holes of the workpiece, and finally form the first side plate.

As shown in Figures 17 to 19, on the second transfer mold, the workpiece is firstly flanged at the sixth flange station, then flanged at the seventh forming and flanging station, then flanged again at the eighth flanging station, and finally flanged at the ninth flanging station. Corresponding to the ninth flanging station, the second upper mold assembly includes a ninth upper mold plate 914 and a forming block 910 disposed on the ninth upper mold plate 914, and the second lower mold assembly includes a ninth lower mold plate 1013, a stripper plate 1007 disposed on the ninth lower mold plate 1013, a rear forming block 1008 disposed on the stripper plate 1007, and a front forming block 1009 disposed on the ninth lower mold plate 1013. The ninth upper template 914 is horizontally arranged, and the ninth upper template 914 is at the same height as the eighth upper template 913. The forming block 910 is fixedly mounted on the bottom surface of the ninth upper template 914, and the forming block 910 is located below the ninth upper template 914. The bottom surface of the forming block 910 is a forming surface for bonding with the workpiece. The ninth lower template 1013 is horizontally arranged, and the stripper plate 1007 is horizontally arranged and is located above the ninth lower template 1013. The stripper plate 1007 is connected to the ninth lower template 1013 through a nitrogen spring, and the stripper plate 1007 can move in the vertical direction relative to the ninth lower template 1013. The rear forming block 1008 is fixedly mounted on the top surface of the stripper plate 1007, and the rear forming block 1008 is located above the stripper plate 1007. The top surface of the rear forming block 1008 is a forming surface for bonding with the inner wall surface of the workpiece, and the workpiece is sleeved on the rear forming block 1008. The front forming block 1009 is fixedly mounted on the top surface of the ninth lower mold plate 1013, and the front forming block 1009 is located above the ninth lower mold plate 1013. The front forming block 1009 has a forming surface for fitting with the surface of the workpiece. The front forming block 1009 and the rear forming block 1008 are located on the same straight line parallel to the second direction. The front forming block 1009 and the rear forming block 1008 have a certain length, and the length direction of the front forming block 1009 and the rear forming block 1008 is parallel to the first direction. In the second direction, the front forming block 1009 is located between the rear forming block 1008 and the eighth flanging station. The forming block 910 of the second upper mold assembly cooperates with the rear forming block 1008 and the front forming block 1009 of the second lower mold assembly to clamp the workpiece and perform flanging molding on the workpiece to form a complete third side flanging on the workpiece.

As shown in FIG17 , the second transfer mold further includes a second upper mold base 37 and a second lower mold base 38. The second upper mold base 37 and the second lower mold base 38 have a certain length and width. The length direction of the second upper mold base 37 and the second lower mold base 38 is parallel to the second direction. The width direction of the second upper mold base 37 and the second lower mold base 38 is parallel to the first direction. The sixth upper mold plate 911, the seventh upper mold plate 912, the eighth upper mold plate 913 and the ninth upper mold plate 914 are arranged in sequence along the length direction of the second upper mold base 37. and the ninth upper template 914 are fixedly connected to the second upper mold base 37, the sixth upper template 911, the seventh upper template 912, the eighth upper template 913 and the ninth upper template 914 are located below the second upper mold base 37, and the second upper mold base 37 drives the sixth upper template 911, the seventh upper template 912, the eighth upper template 913 and the ninth upper template 914 to move synchronously in the vertical direction, the sixth lower template 1010, the seventh lower template 1011, the eighth lower template 1012 and the ninth lower template 1013 are arranged in sequence along the length direction of the second lower mold base 38 and the sixth lower template 1010, the seventh lower template 1011, the eighth lower template 1012 and the ninth lower template 1013 are fixedly connected to the second lower mold base 38, and the sixth lower template 1010, the seventh lower template 1011, the eighth lower template 1012 and the ninth lower template 1013 are located above the second lower mold base 38.

As shown in Figures 21 to 23, the third transfer mold includes a third upper mold assembly and a third lower mold assembly. The third upper mold assembly can perform reciprocating linear motion in the vertical direction relative to the third lower mold assembly to achieve a stamping action. The third upper mold assembly and the third lower mold assembly are respectively provided with three stations, which are the tenth flanging station, the eleventh flanging station, and the twelfth punching and shaping station in the order of processing. After the workpiece is processed on the second transfer mold, the workpiece is transferred to the third transfer mold for further processing. On the third transfer mold, the workpiece is processed at the tenth flanging station, the eleventh flanging station, and the twelfth punching and shaping station in sequence. The tenth flanging station, the eleventh flanging station, and the twelfth punching and shaping station are arranged in sequence along the second direction on the third transfer mold. The third transfer mold is not connected to the second transfer mold. The two are two independent sets of molds. The workpiece can be manually transferred to the third transfer mold.

As shown in Figures 21 to 23, on the third transfer mold, the workpiece is firstly flanging-formed at the tenth flanging station. Corresponding to the tenth flanging station, the third upper mold assembly includes the tenth upper mold plate 1108, the pressing plate 1101 and the rear forming block 1102 arranged on the tenth upper mold plate 1108, and two front forming blocks 1103 arranged on the pressing plate 1101, and the third lower mold assembly includes the tenth lower mold plate 1207 and the forming block 1201 arranged on the tenth lower mold plate 1207. The tenth upper template 1108 is horizontally arranged, and the pressing plate 1101 is connected to the tenth upper template 1108 through a nitrogen spring. The pressing plate 1101 is located below the tenth upper template 1108, and the pressing plate 1101 can move in the vertical direction relative to the tenth upper template 1108. The bottom surface of the pressing plate 1101 is a molding surface for fitting with the top surface of the first side plate of the workpiece (when the workpiece is transferred from the second transfer mold to the third transfer mold, the workpiece needs to be rotated 90 degrees so that the first side plate of the workpiece is located at the top, and the workpiece is placed at the tenth flanging station with the first side plate in a horizontal state). Two front forming blocks 1103 are fixedly mounted on the bottom surface of the pressing plate 1101, and the two front forming blocks 1103 are located below the pressing plate 1101. The bottom surfaces of the two front forming blocks 1103 are forming surfaces for fitting with the two end flanges of the workpiece. The two front forming blocks 1103 and the forming surfaces of the pressing plate 1101 are on the same straight line parallel to the first direction, and the forming surface of the pressing plate 1101 is located between the two front forming blocks 1103. The rear forming block 1102 is fixedly mounted on the bottom surface of the tenth upper template 1108, and the rear forming block 1102 is located below the tenth upper template 1108. In the second direction, the rear forming block 1102 is located between the eleventh flange station and the two front forming blocks 1103. The tenth lower template 1207 is horizontally arranged, and the forming block 1201 is fixedly installed on the top surface of the tenth lower template 1207. The top surface of the forming block 1201 is a forming surface that fits the inner wall surface of the workpiece, and the workpiece is sleeved on the forming block 1201. The forming block 1201 is located below the pressing plate 1101, the rear forming block 1102 and the two front forming blocks 1103. The forming block 1201 cooperates with the rear forming block 1102 to bend the edge of the first side plate away from the main body of the crossbeam downward by 90 degrees. The forming block 1201 cooperates with the two front forming blocks 1103 to form a complete first end flange and a second end flange at both ends of the workpiece.

As shown in FIGS. 21 to 23 , on the third transfer mold, the workpiece is firstly flanged at the tenth flange station, and then flanged again at the eleventh flange station. Corresponding to the eleventh flange station, the third upper mold assembly includes an eleventh upper mold plate 1109 and a pressing plate 1104 disposed on the eleventh upper mold plate 1109, and the third lower mold assembly includes an eleventh lower mold plate 1208 and a forming block 1202 disposed on the eleventh lower mold plate 1208. The eleventh upper template 1109 is horizontally arranged, the eleventh upper template 1109 and the tenth upper template 1108 are at the same height, the pressing plate 1104 is connected to the eleventh upper template 1109 through a nitrogen spring, the pressing plate 1104 is located below the eleventh upper template 1109, the pressing plate 1104 can move in the vertical direction relative to the eleventh upper template 1109, and the bottom surface of the pressing plate 1104 is a molding surface for fitting with the top surface of the first side plate of the workpiece (in the tenth flanging station and the eleventh flanging station, the workpiece is placed in the same posture). The eleventh lower template 1208 is horizontally arranged, the forming block 1202 is fixedly installed on the top surface of the eleventh lower template 1208, the top surface of the forming block 1202 is a molding surface fitting with the inner wall surface of the workpiece, and the workpiece is sleeved on the forming block 1202. The forming block 1202 is located below the pressing plate 1104, and the forming block 1202 cooperates with the pressing plate 1104 to clamp the workpiece. The third transfer mold also includes a third flanging device, which is connected to the third upper mold assembly and the third lower mold assembly. The forming block 1202 cooperates with the third flanging device to form a complete first side flanging on the workpiece. The forming block 1202 and the third flanging device are on the same straight line parallel to the second direction, and the third flanging device is located between the forming block 1202 and the twelfth punching and shaping station workpiece. In the vertical direction, the third flanging device is located between the eighth upper mold plate 913 and the eighth lower mold plate 1012 workpiece.

As shown in Fig. 24, the third flanging device includes a third flanging slider 24 movably arranged on the eleventh lower mold plate 1208, a third flanging driving block 23 fixedly arranged on the eleventh upper mold plate 1109 and used to drive the third flanging slider 24, and a flanging convex mold 25 fixedly arranged on the third flanging slider 24, and the flanging convex mold 25 cooperates with the forming block 1202. The third flanging slider 24 is slidably connected to the eleventh lower mold plate 1208, the moving direction of the third flanging slider 24 is parallel to the second direction, the third flanging driving block 23 and the third flanging slider 24 form an inclined wedge mechanism, and the third flanging driving block 23 contacts the third flanging slider 24. During processing, the eleventh upper template 1109 drives the third flanging driving block 23 to make a linear motion in the vertical direction. Under the action of the third flanging driving block 23, the third flanging slider 24 drives the flanging punch 25 to make a linear motion in the horizontal direction toward the forming block 1202, so that the lower end edge of the bent portion connected to the first side panel on the workpiece is bent inward by 90 degrees to form an inner flanging, thereby forming a first side flanging.

As shown in Figures 21 to 23, on the third transfer mold, the workpiece is firstly flanged at the tenth flanging station, then flanged again at the eleventh flanging station, and finally punched and shaped at the twelfth punching and shaping station. Corresponding to the twelfth punching and shaping station, the third upper mold assembly includes a twelfth upper mold plate 1110, a stripper plate 1105 disposed on the twelfth upper mold plate 1110, two forming blocks 1106 and a punch 1107, and a window plate disposed on the stripper plate 1105, and the third lower mold assembly includes a twelfth lower mold plate 1209, a fixing seat 1203 disposed on the twelfth lower mold plate 1209, two forming blocks 1204, and a concave mold 1205 disposed on the fixing seat 1203. The twelfth upper template 1110 is horizontally arranged, and the unloading plate 1105 is connected to the twelfth upper template 1110 through a nitrogen spring. The unloading plate 1105 is located below the twelfth upper template 1110, and the unloading plate 1105 can move in the vertical direction relative to the twelfth upper template 1110. Two forming blocks 1106 are fixedly installed on the bottom surface of the twelfth upper template 1110. The two forming blocks 1106 are located below the twelfth upper template 1110. The two forming blocks 1106 The bottom surface is a forming surface for fitting with the top surfaces at the two ends of the crossbeam main body of the workpiece (when the workpiece is moved from the eleventh flanging station to the twelfth punching and shaping station, the workpiece needs to be rotated 90 degrees so that the crossbeam main body of the workpiece is located at the top, and the workpiece is placed at the twelfth punching and shaping station with the crossbeam main body in a horizontal state, that is, at the twelfth punching and shaping station, the second drawing station, the third trimming and punching station, the fourth flanging station, the fifth punching and trimming station, the sixth flanging station, the seventh forming and flanging station, the eighth flanging station and the ninth flanging station, the workpiece is placed in the same posture), the two forming blocks 1106 and the unloading plate 1105 are on the same straight line parallel to the first direction, and the unloading plate 1105 is located between the two forming blocks 1106. The window plate is fixedly mounted on the bottom surface of the unloading plate 1105, and the bottom surface of the window plate is a molding surface for fitting with the top surface of the cross beam main body of the workpiece. The twelfth lower template 1209 is horizontally arranged, and the fixing seat 1203 is fixedly mounted on the top surface of the twelfth lower template 1209 and the fixing seat 1203 is located above the twelfth lower template 1209. The top surface of the fixing seat 1203 is a molding surface for fitting with the inner wall surface of the workpiece, and the workpiece is sleeved on the fixing seat 1203. The two forming blocks 1204 are fixedly mounted on the top surface of the twelfth lower template 1209 and are located above the twelfth lower template 1209. The two forming blocks 1204 and the fixing seat 1203 are located on the same straight line parallel to the first direction. The fixing seat 1203 is located between the two forming blocks 1204. The top surface of the forming block 1204 is a forming surface for fitting with the workpiece. The two forming blocks 1106 are respectively matched with one forming block 1204 and each forming block 1204 is respectively located below one forming block 1106. The fixing seat 1203 is located directly below the window plate, and the window plate and the fixing seat 1203 are matched to clamp the workpiece. The punch 1107 is vertically arranged, and the upper end of the punch 1107 is fixedly connected to the twelfth upper template 1110 and the punch 1107 extends toward the bottom of the twelfth upper template 1110. The window plate and the stripper plate 1105 have through holes for the punch 1107 to pass through. The die 1205 is fixedly mounted on the fixing seat 1203. The fixing seat 1203 has a groove for accommodating the die 1205. The die 1205 has a hole for inserting the lower end of the punch 1107. The die 1205 is located below the second side flange of the workpiece. The punch 1107 cooperates with the die 1205 to punch a through hole on the second side flange of the workpiece. The two forming blocks 1204 of the third lower die assembly cooperate with the two forming blocks 1106 of the third upper die assembly to shape the two ends of the cross beam main body of the workpiece to form the final body cross beam.

As shown in FIG. 21 , the third transfer mold further includes a third upper mold base 39 and a third lower mold base 40, the third upper mold base 39 and the third lower mold base 40 have a certain length and width, the length direction of the third upper mold base 39 and the third lower mold base 40 is parallel to the second direction, the width direction of the third upper mold base 39 and the third lower mold base 40 is parallel to the first direction, the tenth upper mold plate 1108, the eleventh upper mold plate 1109 and the twelfth upper mold plate 1110 are arranged in sequence along the length direction of the third upper mold base 39, and the tenth upper mold plate 1108, the eleventh upper mold plate 1109 and the twelfth upper mold plate 1110 are fixedly connected to the third upper mold base 39, and the tenth upper mold plate 1108, the eleventh upper mold plate 1109 and the twelfth upper mold plate 1110 are located at the third upper mold base 39. Below the third upper die base 39, the tenth upper die plate 1108, the eleventh upper die plate 1109 and the twelfth upper die plate 1110 move synchronously in the vertical direction, the tenth lower die plate 1207, the eleventh lower die plate 1208 and the twelfth lower die plate 1209 are arranged in sequence along the length direction of the third lower die base 40 and the tenth lower die plate 1207, the eleventh lower die plate 1208 and the twelfth lower die plate 1209 are fixedly connected to the third lower die base 40, and the tenth lower die plate 1207, the eleventh lower die plate 1208 and the twelfth lower die plate 1209 are located above the third lower die base 40.

The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims (3)

1. The processing equipment for the car body cross beam is characterized by comprising a blanking die, a first transfer die, a second transfer die and a third transfer die which are sequentially arranged according to the processing sequence;

the blanking die comprises a blanking upper die assembly and a blanking lower die assembly, and the blanking upper die assembly and the blanking lower die assembly are correspondingly provided with a first blanking station;

the first transfer die comprises a first upper die assembly and a first lower die assembly, wherein the first upper die assembly and the first lower die assembly are correspondingly provided with four stations, namely a second drawing station, a third trimming and punching station, a fourth flanging station and a fifth punching and trimming station according to the processing sequence;

the second transfer die comprises a second upper die assembly and a second lower die assembly, and the second upper die assembly and the second lower die assembly are correspondingly provided with four stations, namely a sixth flanging station, a seventh forming and flanging station, an eighth flanging station and a ninth flanging station according to the processing sequence;

The third transfer die comprises a third upper die assembly and a third lower die assembly, and the third upper die assembly and the third lower die assembly are correspondingly provided with three stations, namely a tenth flanging station, an eleventh flanging station and a twelfth punching and shaping station according to the processing sequence;

the blanking upper die assembly comprises a first upper die plate, a first punch, a second punch, a third punch, a fourth punch, a first stripper plate, a second stripper plate and an insert, wherein the first punch, the second punch and the third punch are arranged on the first upper die plate;

Corresponding to the second drawing station, the first upper die assembly comprises a second upper die plate, a first forming block (701) and a second forming block (702) which are arranged on the second upper die plate, the first lower die assembly comprises a second lower die plate, a third stripper plate (801) and a first fixing seat (802) which are arranged on the second lower die plate, an inner forming block (803) which is arranged on the first fixing seat (802) and matched with the first forming block (701) and the second forming block (702) of the first upper die assembly, and two first outer forming blocks (804) which are arranged on the third stripper plate (801) and matched with the first forming block (701) and the second forming block (702) of the first upper die assembly, and the inner forming block (803) is positioned between the two first outer forming blocks (804);

corresponding to the third trimming and punching station, the first upper die assembly comprises a third upper die plate, a fixed plate (703) arranged on the third upper die plate, a fourth stripper plate (719), a first positioning pin (712) and a fifth punch (713) and eight trimming cutter blocks (704, 705, 706, 707, 708, 709, 710, 711) arranged on the fixed plate (703), the first lower die assembly comprises a third lower die plate, an inner die (805) and two outer dies (806) arranged on the third lower die plate, the fourth stripper plate (719), the first positioning pin (712) and the fifth punch (713) of the first upper die assembly are matched with the inner die (805), and the eight trimming cutter blocks (704, 705, 706, 707, 708, 710, 711) of the first upper die assembly are matched with the two outer dies (806), and the inner die (805) is positioned between the two outer dies (806);

Corresponding to the fourth flanging station, the first upper die assembly comprises a fourth upper die plate, a fifth stripper plate (714) and two second outer forming blocks (716) which are arranged on the fourth upper die plate, and an inner forming block (715) which is arranged on the fifth stripper plate (714), wherein the inner forming block (714) is positioned between the two second outer forming blocks (716), the first lower die assembly comprises a fourth lower die plate, a third forming block (807) and two second positioning pins (808) which are arranged on the fourth lower die plate, and the inner forming block and the two second outer forming blocks (716) of the first upper die assembly are matched with the third forming block (807);

corresponding to the fifth punching and trimming station, the first upper die assembly comprises a fifth upper die plate, a sixth stripper plate (717) arranged on the fifth upper die plate and a fourth forming block (718) arranged on the sixth stripper plate (717), the first lower die assembly comprises a fifth lower die plate and a third female die (809) arranged on the fifth lower die plate, the fourth forming block (718) arranged on the sixth stripper plate (717) is matched with the third female die (809) arranged on the fifth lower die plate, the first transfer die further comprises a first punching device, a second punching device, a first punching device and a second punching device, the first punching device, the second punching device and the second punching device are connected with the first upper die assembly and the first lower die assembly, the first punching device and the second punching device are arranged oppositely, the third female die (809) arranged on the fifth upper die plate is positioned between the first punching device and the second punching device and the fifth punching device is positioned between the first female die (809) and the fifth punching device and the third punching device is positioned between the first punching device and the fifth punching device and the third punching device is positioned between the third punching device and the fifth punching device is positioned between the third punching device and the fifth punching device;

Corresponding to the sixth flanging station, the second upper die assembly comprises a sixth upper die plate, a fifth forming block (901) and a sixth forming block (902) which are arranged on the sixth upper die plate, the second lower die assembly comprises a sixth lower die plate, a seventh stripper plate (1001) which is arranged on the sixth lower die plate, a seventh forming block (1002) which is arranged on the seventh stripper plate (1001) and an eighth forming block (1003) which is arranged on the sixth lower die plate, and the fifth forming block (901) and the sixth forming block (902) of the second upper die assembly are matched with the seventh forming block (1002) and the eighth forming block (1003) of the second lower die assembly;

corresponding to the seventh forming and flanging station, the second upper die assembly comprises a seventh upper die plate, an eighth stripper plate (903) arranged on the seventh upper die plate, two sixth punches (904), a first front forming block (905) and two side forming blocks (906) and a first material pressing plate (907) arranged on the eighth stripper plate (903), the second lower die assembly comprises a seventh lower die plate and a second front forming block (1004) and a rear forming block (1005) arranged on the seventh lower die plate, the second front forming block (1004) of the second lower die assembly is positioned below the first front forming block (905) of the second upper die assembly and is matched with the first front forming block (905) and the second front forming block (1004), and the rear forming block (1005) is positioned below the first material pressing plate (907) and the two side forming blocks (906) and is matched with the first material pressing plate (1005);

Corresponding to the eighth flanging station, the second upper die assembly comprises an eighth upper die plate, a ninth stripper plate (908) arranged on the eighth upper die plate and a second pressing plate (909) arranged on the ninth stripper plate (908), the second lower die assembly comprises an eighth lower die plate and a ninth forming block (1006) arranged on the eighth lower die plate and matched with the second pressing plate (909), the second transfer die further comprises a first flanging device and a second flanging device, the first flanging device and the second flanging device are connected with the second upper die assembly and the second lower die assembly and are oppositely arranged, and the ninth forming block (1006) is positioned between the first flanging device and the second flanging device;

corresponding to the ninth flanging station, the second upper die assembly comprises a ninth upper die plate and a tenth forming block (910) arranged on the ninth upper die plate, the second lower die assembly comprises a ninth lower die plate, a tenth stripper plate (1007) arranged on the ninth lower die plate, a rear forming block (1008) arranged on the tenth stripper plate (1007) and a third front forming block (1009) arranged on the ninth lower die plate, and the tenth forming block (910) of the second upper die assembly is matched with the rear forming block (1008) and the third front forming block (1009) of the second lower die assembly;

Corresponding to the tenth flanging station, the third upper die assembly comprises a tenth upper die plate, a third material pressing plate (1101) and a rear forming block (1102) which are arranged on the tenth upper die plate, and two fourth front forming blocks (1103) which are arranged on the third material pressing plate (1101), the third lower die assembly comprises a tenth lower die plate and an eleventh forming block (1201) which is arranged on the tenth lower die plate, and the eleventh forming block (1201) is matched with the rear forming block (1102) and the two fourth front forming blocks (1103);

corresponding to the eleventh flanging station, the third upper die assembly comprises an eleventh upper die plate and a fourth pressing plate (1104) arranged on the eleventh upper die plate, the third lower die assembly comprises an eleventh lower die plate and a twelfth forming block (1202) arranged on the eleventh lower die plate, the third transfer die further comprises a third flanging device, the third flanging device is connected with the third upper die assembly and the third lower die assembly, and the twelfth forming block (1202) is matched with the third flanging device and the fourth pressing plate (1104);

corresponding to the twelfth punching and shaping station, the third upper die assembly comprises a twelfth upper die plate, an eleventh stripper plate (1105) arranged on the twelfth upper die plate, two thirteenth forming blocks (1106) and a seventh punch (1107) and a window plate arranged on the eleventh stripper plate (1105), the third lower die assembly comprises a twelfth lower die plate, a second fixing seat (1203) and two fourteenth forming blocks (1204) arranged on the twelfth lower die plate and a fourth female die (1205) arranged on the second fixing seat (1203), the two fourteenth forming blocks (1204) of the third lower die assembly are matched with the two thirteenth forming blocks (1106) of the third upper die assembly, the seventh punch (1107) is matched with the fourth female die (1205), and the second fixing seat (1203) is located between the two fourteenth forming blocks (1204).

2. The sedan body cross beam processing apparatus of claim 1, wherein the first punch, the second punch, and the third punch are on a same straight line parallel to a first direction, the first stripper plate and the second stripper plate are on a same straight line parallel to a second direction, the first direction and the second direction are both horizontal directions and the first direction and the second direction are perpendicular, and the blank is moved in the second direction on the blanking die during processing.

3. The sedan body cross beam processing apparatus of claim 1, wherein the first punch, the second punch, and the third punch are all round punches, the first punch, the second punch, and the third punch are vertically disposed on the first upper die plate, the second punch is disposed in two, the two second punches are disposed between the first punch and the third punch, and the first punch and the third punch are disposed in one respectively.