Automobile front floor molding equipment and process

Abstract

The present invention provides a front floor molding device and a front floor molding process for an automobile. The front floor molding device for an automobile includes a drawing die and a repairing die. The drawing die is used to draw and shape the sheet material and pre-trim to form a front floor process part; the repairing die is used to trim and flanging the front floor process part; wherein the drawing die includes a piercing knife assembly, a drawing upper die and a drawing lower die, the piercing knife assembly includes an upper piercing knife and a lower piercing knife, the upper piercing knife is connected to the drawing upper die to pre-trim to form the corner of the front floor process part, and the lower piercing knife is connected to the drawing lower die to avoid the upper piercing knife during piercing pre-trim. The front floor molding device for an automobile divides the flanging process into two parts, which are respectively arranged in the drawing process and the trimming process, thereby eliminating the independent flanging process and achieving the purpose of reducing the order.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts production line, and in particular to automobile front floor molding equipment and process. Background Art

[0002] As an important component of the lower body, the front floor is widely used in the development of the lower body structure. It has many structural features, is large in size, has flanges on both sides, and is made of very thin material. It is a relatively high-cost part in the development of body sheet metal.

[0003] The existing front floor molding process requires three stamping processes, including stretching, trimming and punching, and flanging. The main defects of this process are: it is necessary to develop three sets of molds corresponding to the processes, which is costly; it needs to be stamped three times, which is not efficient, and increases labor costs and equipment costs; the increased energy consumption of mold development and production indirectly increases carbon emissions, which is not conducive to energy conservation and emission reduction. Summary of the invention

[0004] The purpose of the present invention is to provide a car front floor molding device, which divides the flanging process into two parts, which are respectively arranged in a drawing process and a trimming process, cancels the independent flanging process, and achieves the purpose of reducing the order.

[0005] The invention also provides a process for forming a front floor of an automobile.

[0006] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, a front floor molding device for an automobile is provided. The front floor molding device for an automobile includes a drawing die and a repairing die. The drawing die is used to draw and shape the sheet material and pre-trim to form the front floor process parts; the repairing die is used to trim and flanging the front floor process parts; wherein, the drawing die includes a piercing knife assembly, an upper drawing die and a lower drawing die, the piercing knife assembly includes an upper piercing knife and a lower piercing knife, the upper piercing knife is connected to the upper drawing die to pre-trim to form the corner of the front floor process parts, and the lower piercing knife is connected to the lower drawing die to avoid the upper piercing knife during piercing and pre-trim.

[0008] According to one embodiment of the present invention, the upper drawing die includes an upper drawing die base and a drawing die connected to the upper drawing die base, the drawing die and the lower drawing die are combined to form the lower surface of the front floor process part, and the upper piercing knife is connected to the drawing die.

[0009] According to one embodiment of the present invention, the upper piercing knife includes an upper knife seat, a cutting edge and a boss, the cutting edge is connected to the edge of the upper knife seat, the boss extends obliquely from the cutting edge to the upper knife seat, and the upper knife seat is connected to the drawing die.

[0010] According to one embodiment of the present invention, the width of the cutting edge is 4 mm, the height of the cutting edge is 2 mm, and the width of the boss is 9 mm.

[0011] According to one embodiment of the present invention, the drawing lower die includes a drawing lower die base, and a drawing punch and a pressure ring respectively connected to the drawing lower die base, the drawing punch and the drawing die are combined to form the upper surface of the front floor process part, the lower piercing knife is connected to the drawing punch, and the number of the pressure rings is equal to the number of the lower piercing knives, so as to fix the excess part of the sheet material for drawing.

[0012] According to an embodiment of the present invention, the lower piercing knife includes a lower knife seat connected to the drawing punch, and the lower knife seat is provided with an avoidance groove at a position corresponding to the cutting edge.

[0013] According to one embodiment of the present invention, the repair mold includes a repair knife assembly, a repair upper mold and a repair lower mold, the repair knife assembly includes an upper repair knife, a lower trimming knife and a lower flanging knife, the upper repair knife is connected to the repair upper mold, the lower trimming knife and the lower flanging knife are respectively connected to the repair lower mold, a flanging gap is arranged between the lower trimming knife and the lower flanging knife, the upper repair knife is arranged in the flanging gap to form a flanging after trimming the front floor process parts.

[0014] According to one embodiment of the present invention, the repair upper die includes a repair upper die base and a pressure plate connected to the repair upper die base, the pressure plate is molded with the repair lower die to limit the front floor process parts, and the upper repair knife ring is arranged on the circumference of the pressure plate and connected to the repair upper die base.

[0015] According to one embodiment of the present invention, the repair lower die includes a repair lower die base and a repair punch connected to the repair lower die base, the repair punch is molded with the pressure plate to fix the front floor process parts, the lower trimming knife ring is arranged on the circumference of the repair punch and is connected to the repair lower die base, and the lower flanging knife is connected to the edge of the repair punch to form the flanging gap between the lower trimming knife and the repair punch.

[0016] According to another aspect of the present invention, a process for forming a front floor of an automobile is provided. The method comprises: placing a sheet material into a drawing die, and moving the upper drawing die toward the lower drawing die to close the die; when the sheet material is drawn to 1 mm before the bottom, the upper piercing knife performs pre-piercing at the corner of the front floor process part to form the front floor process part; placing the front floor process part into a repair and flipping die, and moving the upper repair and flipping die toward the lower repair and flipping die to close the die, and the upper repair and flipping knife and the lower trimming knife cooperate to trim and flanging the front floor process part to form the front floor.

[0017] An embodiment of the present invention has the following advantages or beneficial effects:

[0018] The automobile front floor forming equipment of the present invention comprises a drawing die and a repairing die. The upper puncturing knife and the lower puncturing knife of the drawing die cooperate to pre-trim the sheet material before drawing and forming to the bottom, so as to form a part of flange less than 16 mm on the front floor process part. At the same time, the part required to be cut of the front floor process part is cut into six pieces by six groups of puncturing knife assemblies, so as to create conditions for subsequent trimming and flanging in the same sequence. The upper repairing knife of the repairing die cooperates with the lower trimming knife to trim the front floor process part first, and then cooperates with the lower flanging knife to perform a part of flange greater than or equal to 16 mm on the front floor process part, so as to complete the trimming process and flanging process in the prior art in the same sequence, and then divide the flanging process in the stamping process of the prior art into two parts, which are respectively arranged in the drawing process and the repairing process of the present invention, and the independent flanging process in the prior art is cancelled, so as to achieve the purpose of sequence reduction, reduce the number of mold sets, reduce the manufacturing production cost, improve the stamping efficiency and equipment utilization rate, indirectly reduce carbon emissions, and achieve a certain energy-saving and emission reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0020] Figure 1 The figure is a schematic diagram showing a drawing and repairing die of a front floor molding device for an automobile according to an exemplary embodiment.

[0021] Figure 2 The figure is an exploded view of a drawing upper die of an automobile front floor molding device according to an exemplary embodiment.

[0022] Figure 3 The figure is a schematic diagram showing a piercing knife assembly of a front floor molding device for an automobile according to an exemplary embodiment.

[0023] Figure 4 is a perspective view showing an upper puncturing knife of a front floor molding device for an automobile according to an exemplary embodiment.

[0024] Figure 5The present invention is a perspective view showing a lower puncturing knife of a front floor molding device for an automobile according to an exemplary embodiment.

[0025] Figure 6 The figure is a schematic diagram showing a repair mold of a front floor molding device for an automobile according to an exemplary embodiment.

[0026] Figure 7 The figure is an exploded view of a repair upper mold of a front floor molding device for an automobile according to an exemplary embodiment.

[0027] Figure 8 The present invention is an exploded view of a repair lower mold of a front floor molding device for an automobile according to an exemplary embodiment.

[0028] Fig. 9 The figure is a schematic diagram showing a trimming knife assembly of a front floor molding device for an automobile according to an exemplary embodiment.

[0029] Fig.10 The present invention is a perspective view showing an upper trimming blade of a front floor molding device for an automobile according to an exemplary embodiment.

[0030] Fig.11 The present invention is a perspective view showing a lower trimming knife of a front floor molding device for an automobile according to an exemplary embodiment.

[0031] Fig.12 The present invention is a perspective view showing a lower flanging knife of a front floor molding device for an automobile according to an exemplary embodiment.

[0032] Fig.13 It is a schematic diagram showing a repair process of a front floor molding process of an automobile according to an exemplary embodiment.

[0033] Fig.14 The figure is a front floor product molding process diagram showing a front floor molding process for an automobile according to an exemplary embodiment.

[0034] The reference numerals are described as follows:

[0035] 1. Drawing die; 11. Piercing knife assembly; 111. Upper piercing knife; 1111. Upper knife seat; 1112. Cutting edge; 1113. Boss; 112. Lower piercing knife; 1121. Lower knife seat; 11211. Avoidance groove; 12. Drawing upper die; 121. Drawing upper die seat; 122. Drawing concave die; 13. Drawing lower die; 131. Drawing lower die seat; 132. Drawing punch; 133. Pressure ring; 2. Repair and turn over mold; 21. Repair and turn over knife assembly; 211. Upper repair and turn over knife; 212. Lower trimming knife; 213. Lower flanging knife; 22. Repair and turn over upper mold; 221. Repair and turn over upper mold seat; 222. Pressing plate; 23. Repair and turn over lower mold; 231. Repair and turn over lower mold seat; 232. Repair and turn over punch; 24. Flanging gap; 5. Sheet material; 6. Front floor process parts; 7. Front floor. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0037] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0038] like Figures 1 to 14 As shown, Figure 1 A schematic diagram of a drawing and repairing die 1 of a front floor molding device for an automobile provided by the present invention is shown. Figure 2 The exploded view of the upper drawing die 12 of the automobile front floor molding equipment provided by the present invention is shown. Figure 3 A schematic diagram of a piercing knife assembly 11 of an automobile front floor molding device provided by the present invention is shown. Figure 4 A three-dimensional view of an upper piercing knife 111 of an automobile front floor molding device provided by the present invention is shown. Figure 5 A three-dimensional view of a lower piercing knife 112 of an automobile front floor molding device provided by the present invention is shown. Figure 6 A schematic diagram of a repair mold 2 of a front floor molding device for an automobile provided by the present invention is shown. Figure 7 The exploded view of the repair upper mold 22 of the automobile front floor molding equipment provided by the present invention is shown. Figure 8 The exploded view of the lower mold 23 of the automobile front floor molding equipment provided by the present invention is shown. Fig. 9A schematic diagram of a trimming knife assembly 21 of an automobile front floor molding device provided by the present invention is shown. Fig.10 A three-dimensional diagram of an upper trimming blade 211 of an automobile front floor molding device provided by the present invention is shown. Fig.11 A three-dimensional view of a lower trimming knife 212 of an automobile front floor molding device provided by the present invention is shown. Fig.12 A stereoscopic view of a lower flanging knife 213 of an automobile front floor molding device provided by the present invention is shown. Fig.13 A schematic diagram of a repair process of a front floor molding process of an automobile provided by the present invention is shown. Fig.14 A front floor 7 product molding process of a front floor of an automobile provided by the present invention is shown.

[0039] The automobile front floor molding equipment of the embodiment of the present invention comprises a drawing and repairing die 1 and a repairing and flanging die 2. The drawing and repairing die 1 is used for drawing and forming the sheet material 5 and pre-trim forming the front floor process part 6; the flanging and flanging die 2 is used for trimming and flanging the front floor process part 6; wherein, the drawing and repairing die 1 comprises a piercing knife assembly 11, a drawing and repairing upper die 12 and a drawing and repairing lower die 13, the piercing knife assembly 11 comprises an upper piercing knife 111 and a lower piercing knife 112, the upper piercing knife 111 is connected to the drawing and repairing upper die 12 to pre-trim the corner of the front floor process part 6, and the lower piercing knife 112 is connected to the drawing and repairing lower die 13 to avoid the upper piercing knife 111 during piercing and pre-trim.

[0040] like Figures 1 to 3 As shown, there is at least one piercing knife assembly 11. Since the product of the present invention is the front floor 7 of the automobile, it is a bilaterally symmetrical structure, and corners are respectively arranged at the front, middle and rear of the front floor 7, and the flange height of the corner is less than 16 mm, it is impossible to perform trimming in the subsequent repair process, and the piercing knife assembly 11 can be used to pierce and pre-repair the corners. There are a total of six corners, and the present invention adopts six piercing knife assemblies 11, and one piercing knife assembly 11 is respectively arranged for each corner, and the upper piercing knife 111 is fixed to the upper drawing die 12 by bolts, and the lower piercing knife 112 is fixed to the lower drawing die 13 by bolts, and the upper drawing die 12 is moved to the upper drawing die 13. The die 12 moves to draw the sheet 5, and when the upper drawing die 12 is 1 mm away from the complete mold closing to the lower drawing die 13, the upper piercing knife 111 and the lower piercing knife 112 begin to cooperate until the upper drawing die 12 and the lower drawing die 13 are completely closed, and the upper piercing knife 111 is completely inserted into the lower piercing knife 112, and the sheet 5 can be pierced in advance when drawing, and the part that needs to be cut around the sheet 5 is divided into six pieces, creating conditions for the subsequent repair process, and then the repair die 2 is used in the subsequent repair process to trim and flanging the flanged part with a height greater than 16 mm, thereby eliminating the flanging process in the prior art and achieving the purpose of reducing the order.

[0041] In a preferred embodiment of the present invention, the upper drawing die 12 includes an upper drawing die base 121 and a drawing die 122 connected to the upper drawing die base 121. The drawing die 122 is combined with the lower drawing die 13 to form the lower surface of the front floor process part 6. The upper piercing knife 111 is connected to the drawing die 122.

[0042] like Figures 1 to 3 As shown, the drawing die 122 is fixed to the drawing upper die seat 121 by bolts. The present invention preferably has the drawing die 122 and the drawing upper die seat 121 as an integrally formed structure, and the upper surface of the drawing die 122 is provided with a front floor 7 profile. When the drawing die 122 is molded with the drawing lower die 13, the side of the drawing die 122 that is in contact with the plate forms the upper surface of the front floor process part 6 during the drawing process, wherein the lower surface of the front floor process part 6 is the side surface of the front floor 7 facing the ground during use. Six upper puncturing knives 111 are fixed to the circumference of the drawing die 122 by bolts at intervals, corresponding to the six corners of the front floor 7 of the automobile, and the sheet material 5 is punctured and pre-repaired during the molding of the drawing die 122 and the drawing lower die 13.

[0043] In a preferred embodiment of the present invention, the upper piercing knife 111 includes an upper knife seat 1111, a cutting edge 1112 and a boss 1113, the cutting edge 1112 is connected to the edge of the upper knife seat 1111, the boss 1113 extends obliquely from the cutting edge 1112 to the upper knife seat 1111, and the upper knife seat 1111 is connected to the drawing die 122.

[0044] like Figure 4 As shown, the upper knife seat 1111 is usually set to a regular shape such as a cuboid or a cube, and the cutting edge 1112 is determined by the shape that needs to be punctured and cut on the sheet material 5. The cutting edge 1112 of the present invention has a wavy structure, and the boss 1113 extends obliquely from one side of the cutting edge 1112 to the upper knife seat 1111, so that the blade part of the upper puncturing knife 111 forms a structure that is narrow at the bottom and wide at the top, so that the upper puncturing knife 111 is sharper when inserted into the plate.

[0045] In a preferred embodiment of the present invention, the width of the cutting edge 1112 is 4 mm, the height of the cutting edge 1112 is 2 mm, and the width of the boss 1113 is 9 mm.

[0046] Among them, the width of the cutting edge 1112 is 4mm, and the width of the boss 1113 is 9mm, which can ensure the strength of the upper piercing knife 111. The height of the cutting edge 1112 is 2mm, and it protrudes from the middle drawing punch 1321mm, which is convenient for controlling the upper piercing knife 111 to start piercing and pre-repair 1mm before the drawing upper die 12 and the drawing lower die 13 are fully closed.

[0047] In a preferred embodiment of the present invention, the drawing lower die 13 includes a drawing lower die base 131, and a drawing punch 132 and a pressure ring 133 respectively connected to the drawing lower die base 131. The drawing punch 132 is molded with the drawing die 122 to form the upper surface of the front floor process part 6. The lower piercing knife 112 is connected to the drawing punch 132. The number of pressure rings 133 is equal to the number of lower piercing knives 112, so as to fix the excess part of the sheet material 5 for drawing.

[0048] like Figures 1 to 3 As shown, the drawing punch 132 is fixed to the drawing lower die seat 131 by bolts. When the drawing upper die seat 121 moves toward the drawing lower die seat 131 for mold closing, the drawing punch 132 and the drawing die 122 squeeze the sheet 5 to form the front floor process part 6. The surface shape of the side where the drawing punch 132 is in contact with the sheet 5 determines the upper surface of the front floor process part 6, and the surface shape of the side where the drawing die 122 is in contact with the sheet 5 determines the lower surface of the front floor process part 6. The upper surface of the front floor process part 6 is the side surface of the automobile front floor 7 close to the ground during use, and the lower surface of the front floor process part 6 is the side surface of the automobile front floor 7 facing away from the ground during use. The lower piercing knife 112 is arranged at the corresponding position of the upper piercing knife 111 and is fixed to the drawing punch 132 by bolts, so that the upper piercing knife 111 can be avoided in the drawing pre-repair process. Six pressure rings 133 are arranged at corresponding positions of the corners. When the upper drawing die 12 and the lower drawing die 13 are closed, the pressure rings 133 abut against the waste part of the sheet 5, which can fix the waste part of the sheet 5 during puncture pre-trim, thereby preventing errors from occurring during puncture pre-trim. Preferably, drawing ribs are provided on the pressure rings 133 to control the inflow of the sheet 5 during drawing.

[0049] In a preferred embodiment of the present invention, the lower piercing knife 112 includes a lower knife seat 1121 connected to the drawing punch 132 , and the lower knife seat 1121 is provided with an avoidance groove 11211 at a position corresponding to the cutting edge 1112 .

[0050] like Figure 5 As shown, the lower knife seat 1121 is fixed to the drawing punch 132 by bolts, and an avoidance groove 11211 is provided on the side surface of the lower knife seat 1121 facing the upper piercing knife 111, and the shape of the avoidance groove 11211 is determined by the shape of the cutting edge 1112, so that when the sheet material 5 is pre-pierced, that is, when the drawing punch 132 and the drawing die 122 are close to being completely closed, the side of the cutting edge 1112 close to the lower knife seat 1121 is completely accommodated in the avoidance groove 11211, thereby completely piercing the sheet material 5.

[0051] In a preferred embodiment of the present invention, the repair mold 2 includes a repair knife assembly 21, a repair upper mold 22 and a repair lower mold 23. The repair knife assembly 21 includes an upper repair knife 211, a lower trimming knife 212 and a lower flanging knife 213. The upper repair knife 211 is connected to the repair upper mold 22, the lower trimming knife 212 and the lower flanging knife 213 are respectively connected to the repair lower mold 23, and a flanging gap 24 is arranged between the lower trimming knife 212 and the lower flanging knife 213. The upper repair knife 211 is arranged in the flanging gap 24 to form a flanging after trimming the front floor process part 6.

[0052] like Figures 6 to 9 As shown, the upper trimming knife 211 is fixed to the trimming upper mold 22 by bolts, the lower trimming knife 212 and the lower flanging knife 213 are respectively fixed to the trimming lower mold 23 by bolts, and the lower flanging knife 213 is arranged on the inner side of the lower trimming knife 212, and the blade of the upper trimming knife 211 is in contact with the lower trimming knife 212. When the trimming upper mold 22 drives the upper trimming knife 211 to close the trimming lower mold 23, the blade of the upper trimming knife 211 cooperates with the lower trimming knife 212 to trim the front floor process part 6. After trimming, the upper trimming knife 211 continues to be pressed down and inserted into the flanging gap 24. The upper trimming knife 211 cooperates with the lower flanging knife 213 to fold the edge part of the corresponding position of the front floor process part 6 to the side of the lower flanging knife 213 to complete the flanging.

[0053] In a preferred embodiment of the present invention, the repair upper mold 22 includes a repair upper mold base 221 and a pressure plate 222 connected to the repair upper mold base 221. The pressure plate 222 is molded with the repair lower mold 23 to limit the front floor process part 6. The upper repair knife 211 is arranged on the circumference of the pressure plate 222 and is connected to the repair upper mold base 221.

[0054] like Figure 6 and Figure 7 As shown, the pressing plate 222 is fixed to the repair upper die seat 221 by bolts. When the repair upper die seat 221 drives the pressing plate 222 to close the repair lower die 23, the pressing plate 222 and the repair lower die 23 clamp the front floor process part 6 between the two to fix the front floor process part 6 during the repair. The upper repair knife 211 is also fixed to the repair upper die seat 221 by bolts like the pressing plate 222. The front floor process part 6 can be trimmed by the upper repair knife 211 and the lower trimming knife 212 while the pressing plate 222 and the repair lower die 23 clamp the front floor process part 6.

[0055] In a preferred embodiment of the present invention, the repair lower die 23 includes a repair lower die base 231 and a repair punch 232 connected to the repair lower die base 231, the repair punch 232 is molded with a pressure plate 222 to fix the front floor process part 6, the lower trimming knife 212 is arranged on the circumference of the repairing punch 232 and is connected to the repair lower die base 231, and the lower flanging knife 213 is connected to the edge of the repairing punch 232 to form a flanging gap 24 between the lower trimming knife 212.

[0056] like Figures 6 to 8 As shown, the repair punch 232 is fixed to the repair lower die seat 231 by bolts, and the side surface of the repair punch 232 close to the pressure plate 222 is provided with the same shape as the lower surface of the front floor process part 6. When the pressure plate 222 and the repair punch 232 clamp the front floor process part 6, the front floor process part 6 can be further limited. The lower flanging knife 213 is fixed to the edge of the repair punch 232 by bolts. The lower trimming knife 212 is fixed to the repair lower die seat 231 by bolts and is separated from the repair punch 232 by a certain distance, so that the flanging gap 24 between the lower trimming knife 212 and the lower flanging knife 213 is greater than or equal to 16mm. When the upper repair knife 211 is pressed down, it first cooperates with the lower trimming knife 212 to trim the front floor process part 6, and then cooperates with the lower flanging knife 213 to flanging the front floor process part 6, integrating the trimming process and flanging process in the prior art into one repair process. Preferably, the lower flanging knife 213 and the trimming punch 232 are an integrally formed structure.

[0057] The automobile front floor forming equipment of the present invention comprises a drawing and repairing die 1 and a repairing and flipping die 2. The upper piercing knife 111 and the lower piercing knife 112 of the drawing and repairing die 1 cooperate to pierce and pre-repair the sheet material 5 before the drawing and forming to the bottom, so as to form a part of the flanging less than 16 mm on the front floor process part 6. At the same time, the six groups of piercing knife assemblies 11 cut the part of the front floor process part 6 to be cut into six pieces, so as to create conditions for the subsequent trimming and flanging in the same order. The upper repairing and flipping knife 211 of the flipping die 2 cooperates with the lower trimming knife 212 to trim the front floor process part 6. After trimming, it cooperates with the lower flanging knife 213 to flanging a portion of the front floor process part 6 that is greater than or equal to 16 mm, and the trimming process and flanging process in the prior art are completed in the same sequence, and then the flanging process in the stamping process of the prior art is divided into two parts, which are respectively carried out in the drawing process and the repairing process of the present invention, and the independent flanging process in the prior art is cancelled, thereby achieving the purpose of reducing the sequence, reducing the number of mold sets, reducing the manufacturing production cost, improving the stamping efficiency and equipment utilization rate, indirectly reducing carbon emissions, and achieving a certain energy-saving and emission reduction effect.

[0058] A front floor molding process for an automobile according to an embodiment of the present invention. The method comprises: a sheet material 5 is placed in a drawing die 1, and an upper drawing die 12 moves toward a lower drawing die 13 to close the die; when the sheet material 5 is drawn to 1 mm before the bottom, an upper piercing knife 111 pierces and pre-trim the corner of a front floor process part 6 to form a front floor process part 6; the front floor process part 6 is placed in a repair and flipping die 2, and an upper repair and flipping die 22 moves toward a lower repair and flipping die 23 to close the die, and an upper repair and flipping knife 211 and a lower trimming knife 212 cooperate to trim and flanging the front floor process part 6 to form a front floor 7.

[0059] like Fig.13 and Fig.14 As shown, after the sheet material 5 is placed in the drawing die 1, a drawing pre-repair process is performed, and the drawing upper die seat 121 drives the upper piercing knife 111 to move toward the drawing lower die seat 131. When the drawing upper die seat 121 is 1 mm before the bottom, the cutting edge 1112 of the upper piercing knife 111 abuts against the sheet material 5, and the corner of the sheet material 5 is pierced for pre-repair. At the same time, the edge of the sheet material 5 that needs to be cut is divided into six pieces, creating conditions for the subsequent trimming and flanging in the same sequence. When the drawing upper die seat 121 moves to the bottom, the cutting edge 1112 of the upper piercing knife 111 is inserted into the avoidance groove 11211, completely piercing the sheet material 5 to form the front floor process part 6; then the front floor process part 6 is taken out of the drawing die 1 and placed in the repair die 2 to perform the trimming and flanging process, and the repair and flanging upper die is turned over. The seat 221 drives the trimming knife and the pressure plate 222 to move toward the trimming lower die seat 231 for mold closing. The pressure plate 222 first abuts against the front floor process part 6 and then aligns with the trimming punch 232 for clamping and limiting, ensuring that the front floor process part 6 will not shift during the trimming process. The upper trimming knife 211 abuts against the front floor process part 6 and then continues to press down. The front floor process part 6 is trimmed by the cooperation of the upper trimming knife 211 and the lower trimming knife 212. After the trimming is completed, the upper trimming knife 211 continues to move downward and inserts into the flanging gap 24. The front floor process part 6 is flanging by the cooperation of the upper trimming knife 211 and the lower flanging knife 213. After the trimming upper die seat 221 moves to the bottom, the trimming process and the flanging process can be completed simultaneously in the trimming process.

[0060] The automobile front floor forming process of the present invention eliminates the independent flanging process in the prior art through the above steps, completes a part of the flanging in the drawing pre-trim process, and completes the remaining flanging in the trimming and flanging process, thereby reducing the three steps of the stamping process to two steps, reducing the number of mold sets, reducing manufacturing production costs, improving stamping efficiency and equipment utilization rate, indirectly reducing carbon emissions, and achieving a certain energy-saving and emission reduction effect.

[0061] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0062] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0063] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A car front floor molding equipment, characterized in that: include: A drawing and repairing die (1) is used for drawing and shaping a sheet material (5) and pre-forming a front floor process part (6); as well as A trimming and flanging mold (2) is used for trimming and flanging the front floor process part (6); The drawing and repairing mold (1) comprises a piercing knife assembly (11), an upper drawing and repairing mold (12) and a lower drawing and repairing mold (13); the piercing knife assembly (11) comprises an upper piercing knife (111) and a lower piercing knife (112); the upper piercing knife (111) is connected to the upper drawing and repairing mold (12) to pre-trim the corner of the front floor process part (6); the lower piercing knife (112) is connected to the lower drawing and repairing mold (13) to avoid the upper piercing knife (111) during the piercing and pre-trim; The upper drawing die (12) comprises an upper drawing die seat (121) and a drawing die (122) connected to the upper drawing die seat (121); the drawing die (122) and the lower drawing die (13) are combined to form the lower surface of the front floor process part (6); the upper piercing knife (111) is connected to the drawing die (122); The upper piercing knife (111) comprises an upper knife seat (1111), a cutting edge (1112) and a boss (1113), wherein the cutting edge (1112) is connected to the edge of the upper knife seat (1111), the boss (1113) extends obliquely from the cutting edge (1112) to the upper knife seat (1111), and the upper knife seat (1111) is connected to the drawing die (122); The drawing lower die (13) includes a drawing lower die base (131), and a drawing punch (132) and a pressure ring (133) respectively connected to the drawing lower die base (131); the drawing punch (132) and the drawing concave die (122) are molded together to form the upper surface of the front floor process part (6); the lower piercing knife (112) is connected to the drawing punch (132); the number of the pressure rings (133) is equal to the number of the lower piercing knife (112) to fix the excess part of the sheet material (5) for drawing; The lower piercing knife (112) comprises a lower knife seat (1121) connected to the drawing punch (132), and the lower knife seat (1121) is provided with an avoidance groove (11211) at a position corresponding to the cutting edge (1112); The repair mold (2) comprises a repair knife assembly (21), a repair upper mold (22) and a repair lower mold (23); the repair knife assembly (21) comprises an upper repair knife (211), a lower trimming knife (212) and a lower flanging knife (213); the upper repair knife (211) is connected to the repair upper mold (22); the lower trimming knife (212) and the lower flanging knife (213) are respectively connected to the repair lower mold (23); a flanging gap (24) is provided between the lower trimming knife (212) and the lower flanging knife (213); the upper repair knife (211) is provided in the flanging gap (24) to form a flanging after trimming the front floor process part (6); The repair upper die (22) comprises a repair upper die seat (221) and a pressure plate (222) connected to the repair upper die seat (221); the pressure plate (222) and the repair lower die (23) are molded together to limit the position of the front floor process part (6); the upper repair knife (211) is arranged in a circumferential direction of the pressure plate (222) and is connected to the repair upper die seat (221); The repair lower die (23) comprises a repair lower die seat (231) and a repair convex die (232) connected to the repair lower die seat (231); the repair convex die (232) is molded with the pressing plate (222) to fix the front floor process part (6); the lower trimming knife (212) is arranged on the circumference of the repair convex die (232) and is connected to the repair lower die seat (231); the lower flanging knife (213) is connected to the edge of the repair convex die (232) to form the flanging gap (24) between the lower trimming knife (212) and the repair convex die (232).

2. The automobile front floor molding equipment according to claim 1, characterized in that: The width of the cutting edge (1112) is 4 mm, the height of the cutting edge (1112) is 2 mm, and the width of the boss (1113) is 9 mm.

3. A molding process of a vehicle front floor (7) molding device as claimed in any one of claims 1 or 2, characterized in that: include: The sheet material (5) is placed in a drawing die (1), and the drawing upper die (12) moves toward the drawing lower die (13) to close the die; when the sheet material (5) is drawn to 1 mm before the end, the upper piercing knife (111) pierces the corner of the front floor process part (6) to form the front floor process part (6); The front floor process part (6) is placed in the repair mold (2), the repair upper mold (22) moves toward the repair lower mold (23) to close the mold, and the upper repair knife (211) and the lower trimming knife (212) cooperate to trim and flanging the front floor process part (6) to form the front floor (7).

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