Punching and trimming die for bottom guard plate of automobile battery box body

Abstract

The utility model discloses a punching and trimming die for a bottom guard plate of an automobile battery box body, which comprises a lower punching die, an upper punching die, a punching mechanism and a trimming mechanism, wherein the upper punching die, the punching mechanism and the trimming mechanism are oppositely arranged above the lower punching die; the punching mechanism comprises a receding assembly and a punching assembly, wherein the receding assembly is arranged on the lower punching die and corresponds to one side of the upper punching die, and the punching assembly is arranged on the upper punching die and matched with the receding assembly for punching. The trimming mechanism comprises a lower trimming cutter set and an upper trimming cutter set, wherein the lower trimming cutter set is arranged on the lower stamping die and corresponds to one side of the upper stamping die, and the upper trimming cutter set is arranged on the upper stamping die and is matched with the lower trimming cutter set for trimming. The upper trimming cutter set and the lower trimming cutter set are arranged in a staggered and parallel mode so as to achieve synchronous trimming of the bottom protection plate in a matched mode. Compared with the prior art, the punching mechanism and the trimming mechanism are integrated in one set of die to synchronously punch and trim, so that the forming efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of battery sheet metal stamping, in particular to a punching and trimming die for a bottom guard plate of an automobile battery box. Background Art

[0002] With the popularity of new energy vehicles, the secondary batteries that match them have developed rapidly. As an important component of secondary batteries, the battery box determines the service life and quality of secondary batteries. Secondary batteries are usually installed on the bottom of the vehicle body through a frame structure and exposed in the chassis area of ​​the vehicle body. Then, an underbody guard is installed at the bottom of the secondary battery. The underbody guard is fixed to the frame structure and / or the battery box of the secondary battery by bolts to protect the secondary battery. In order to ensure the stable connection between the underbody guard and the secondary battery and the frame structure, a main installation area that can be connected to the battery box and an edge installation area that is connected to the frame structure are usually set on the underbody guard.

[0003] At present, bottom guard plates are usually formed by stamping dies. When existing bottom guard plates are formed, punching and trimming are the last steps of the bottom guard plate forming. Usually, two sets of molds are used for trimming and punching respectively. On the one hand, there are more forming steps, resulting in low production efficiency. On the other hand, the mold opening fee is increased, resulting in high production costs. Moreover, during the forming process, the bottom guard plate needs to be transferred between the two sets of molds, which will also lead to the accumulation of forming errors between each process, thereby reducing the forming accuracy of the bottom guard plate. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a punching and trimming die for the bottom guard plate of an automobile battery box, so as to solve the problems of low bottom guard plate forming efficiency, high production cost and low forming precision in the prior art.

[0005] To achieve the above-mentioned objectives, the utility model provides a punching and trimming die for a bottom guard plate of a car battery box, comprising a stamping lower die and a stamping upper die relatively arranged above the stamping lower die, as well as a punching mechanism and a trimming mechanism, the punching mechanism comprising a giving way component arranged on the stamping lower die and corresponding to one side of the stamping upper die, and a punching component arranged on the stamping upper die and cooperating with the giving way component for punching, the trimming mechanism comprising a lower trimming knife group arranged on the stamping lower die and corresponding to one side of the stamping upper die, and an upper trimming knife group arranged on the stamping upper die and cooperating with the lower trimming knife group for trimming, one end of the punching assembly corresponding to the stamping lower die can extend downward or retract to the corresponding surface of the stamping upper die to cooperate with the giving way component to punch the mounting hole of the bottom guard plate, and the upper trimming knife group is staggered and arranged in parallel with the lower trimming knife group to cooperate in realizing synchronous trimming of the bottom guard plate.

[0006] Furthermore, the stamping lower die includes a lower die base, a forming base arranged on the lower die base, a lower template floatingly arranged on the forming base, and a positioning assembly arranged on the forming base, a floating groove is recessed on a side of the forming base corresponding to the stamping upper die, the lower template is floatingly supported in the floating groove and the outer circumferential surface of the lower template is spaced apart from the inner circumferential surface of the floating groove, a positioning groove located outside the floating groove is arranged on the forming base, the positioning assembly is installed in the positioning groove, the giving way assembly is arranged in the floating groove and passes through the lower template in a direction close to the stamping upper die to be opposite to the punching assembly and / or is arranged in the positioning groove and is flush with the corresponding surface of the positioning assembly to be opposite to the punching assembly.

[0007] Furthermore, the stamping lower die also includes a guide wheel assembly arranged on the lower template, and the guide wheel assembly includes a guide wheel bracket upright on the lower template and a plurality of rollers rotatably arranged on the guide wheel bracket, the rotating axis of the roller is perpendicular to the introduction direction of the bottom guard plate, and the bottom guard plate is introduced into the lower template along the tangent direction of the roller.

[0008] Furthermore, the stamping upper die includes an upper die seat, a mounting seat arranged in a ring on the upper die seat and corresponding to one side of the lower die seat, an upper template arranged on the mounting seat, and a holding assembly arranged on the edge of the upper template and corresponding to the positioning assembly, the holding assembly cooperates with the positioning assembly to position the bottom guard plate, a mounting groove is formed on the inner periphery of the mounting seat, the upper template is installed in the mounting groove, the punching assembly is arranged in the mounting groove and passes through the upper template in a direction close to the stamping lower die to be opposite to the making way assembly and / or is arranged in the mounting seat and passes through the holding assembly in a direction close to the stamping lower die to be opposite to the making way assembly.

[0009] Furthermore, a plurality of support columns are arranged on the side of the lower template corresponding to the upper template, and a plurality of support blocks are arranged on the side of the upper template corresponding to the lower template. Each support block is arranged corresponding to at least one support column. When the stamping lower die and the stamping upper die are closed, the bottom guard plate is supported and pressed between the support columns and the support blocks.

[0010] Further, the bottom guard plate includes a main mounting area and an edge mounting area integrally formed on the periphery of the main mounting area, the main mounting area is provided with a plurality of first mounting holes, and the edge mounting area is provided with a plurality of second mounting holes;

[0011] The yielding assembly includes a plurality of main yielding structures arranged in the floating groove and / or a plurality of edge yielding structures embedded in the positioning assembly, and the plurality of edge yielding structures are arranged in the positioning assembly along the circumferential direction; the main yielding structure includes a first punching station arranged in the floating groove and penetrating out of the floating groove in a direction close to the upper template, and at least one first yielding hole formed in the first punching station, and the first yielding hole is arranged corresponding to the first mounting hole; the edge yielding structure includes a second punching station embedded in the positioning assembly and a second yielding hole formed in the second punching station, and the second yielding hole is arranged corresponding to the second mounting hole;

[0012] The punching assembly includes a main punching knife group arranged in the mounting groove and corresponding to the main yield structure one by one and / or an edge punching knife group embedded in the mounting seat and corresponding to the edge yield structure one by one, the main punching knife group includes a first fixed seat arranged in the mounting groove, a first punching cylinder built in the first fixed seat, and a first punching needle fixed on the output shaft of the first punching cylinder and capable of extending out of the upper template, the edge punching knife group includes a second punching cylinder built in the mounting seat and a second punching needle fixed on the output shaft of the second punching cylinder and capable of extending out of the holding assembly, when the stamping lower die and the stamping upper die are closed, the first punching needle should extend into the first yield hole and / or the second punching needle should extend into the second yield hole.

[0013] Furthermore, the lower trimming knife group includes a first shearing surface formed on the positioning assembly and facing the direction of the upper trimming knife group, and a second shearing surface formed on the periphery of the positioning assembly;

[0014] The upper trimming tool group includes a trimming punch arranged on the upper die seat and corresponding to the periphery of the mounting seat and / or the holding assembly, a third shearing surface formed on the trimming punch and facing the first shearing surface, and a fourth shearing surface formed on the inner periphery of the trimming punch, the third shearing surface extends beyond the corresponding surface of the holding assembly toward the lower trimming tool group, and the projections of the third shearing surface and the first shearing surface on the horizontal plane are offset. When the stamping lower die and the stamping upper die are closed, the edge of the bottom guard plate is supported on the first shearing surface, and the fourth shearing surface is attached to the bottom of the second shearing surface so that the third shearing surface cooperates with the first shearing surface for trimming.

[0015] Furthermore, it also includes a lower waste cutter group arranged on the periphery of the lower trimming cutter group and an upper waste cutter group arranged on the periphery of the upper trimming cutter group and corresponding to the lower waste cutter group;

[0016] The lower waste knife group includes a plurality of lower cutters distributed circumferentially around the lower trimming knife group, and the upper waste knife group includes upper cutters circumferentially arranged around the upper trimming knife group and corresponding one to one with the lower cutters, and the blades of the lower cutters and the upper cutters are staggered and arranged in parallel to cooperate in cutting off the trimming waste around the bottom guard plate.

[0017] Furthermore, it also includes a waste guide assembly, which includes a first waste guide plate arranged on the stamping lower die and corresponding to the position of the lower trimming knife group, and a second waste guide plate arranged in the stamping lower die and corresponding to the position of the make way assembly.

[0018] Furthermore, it also includes a guiding mechanism arranged between the stamping lower die and the stamping upper die, and the guiding mechanism includes a guide sleeve arranged on the stamping lower die and a guide column arranged on the stamping upper die and correspondingly cooperating with the guide sleeve for guidance.

[0019] The utility model integrates the punching process and the trimming process of the bottom guard plate into the same set of molds by setting a punching mechanism and a trimming mechanism, which can effectively save the stamping process to improve the molding efficiency, and can also save the mold opening cost and mold opening efficiency; at the same time, by setting a lower waste knife group and an upper waste knife group to cooperate in cutting the edge pressing waste after punching, the edge pressing waste can be cut into small pieces, which is convenient for waste recycling and processing. In addition, the utility model also sets a guide wheel assembly on the lower template, and the guide wheel assembly is used to support and lubricate the bottom guard plate when loading, which can effectively reduce the friction between the bottom guard plate and the lower template, and ensure the surface of the bottom guard plate is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the bottom guard plate.

[0021] Figure 2 It is a schematic diagram of the structure of the stretching die.

[0022] Figure 3 It is a structural schematic diagram of the punching and trimming die for the bottom guard plate of the automobile battery box of the utility model.

[0023] Figure 4 This is an internal cross-sectional view of the stamping upper die and the stamping lower die after the stamping die is closed.

[0024] Figure 5 It is a schematic diagram of the structure of the stamping lower die.

[0025] Figure 6 This is the assembly drawing of the forming seat and the lower template.

[0026] Figure 7 for Figure 6 Internal cross-sectional view of .

[0027] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0028] Fig. 9 It is a schematic diagram of the structure of the stamping upper die.

[0029] Fig.10 This is an internal cross-sectional view of the stamping die.

[0030] Fig.11 for Fig.10 Enlarged view of point B in the middle.

[0031] The accompanying drawings in the specification are numeraled as follows:

[0032] Bottom guard plate 100, main mounting area 110, first mounting portion 111, first mounting hole 111a, edge mounting area 120, second mounting portion 121, second mounting hole 121a, positioning portion 122;

[0033] A stretching die 200, a stretching upper die 210, and a stretching lower die 220;

[0034] Stamping lower die 300, lower die seat 310, forming seat 320, floating groove 321, positioning groove 322, lower template 330, support column 331, positioning assembly 340, positioning insert 341, guide wheel assembly 350, guide wheel bracket 351, roller 352;

[0035] Stamping upper die 400, upper die base 410, mounting base 420, mounting groove 421, upper die plate 430, support block 431, pressing assembly 440, pressing insert 441;

[0036] Punching mechanism 500, yielding assembly 510, main yielding structure 511, first punching station 5111, first yielding hole 5112, edge yielding structure 512, second punching station 5121, second yielding hole 5122, punching assembly 520, main punching knife group 521, first fixing seat 5211, first punching cylinder 5212, first punching needle 5213, edge punching knife group 522, second punching cylinder 5221, second punching needle 5222;

[0037] The trimming mechanism 600, the lower trimming knife group 610, the first shearing surface 611, the second shearing surface 612, the upper trimming knife group 620, the trimming punch 621, the third shearing surface 622, and the fourth shearing surface 623;

[0038] Lower waste knife set 710, lower cutting knife 711, upper waste knife set 720, upper cutting knife 721;

[0039] A first waste guide plate 810 and a second waste guide plate 820;

[0040] Guide sleeve 910 , guide groove 911 , guide post 920 . DETAILED DESCRIPTION

[0041] The following is further described in detail through specific implementation methods:

[0042] Example

[0043] Please refer to Figure 1 The utility model is based on Figure 1 The bottom guard plate 100 shown is used as an embodiment of the utility model to illustrate the punching and trimming die of the bottom guard plate of the automobile battery box. The bottom guard plate 100 is a plate-shaped structure as a whole, having a first surface and a second surface arranged oppositely. The bottom guard plate 100 includes a main installation area 110 and an edge installation area 120 integrally formed on the periphery of the main installation area 110. The main installation area 110 is used to connect with the battery box, and the edge installation area 120 is used to connect with the frame structure. A plurality of first installation portions 111 are formed in the main installation area 110, which are recessed from the first surface to the second surface (when observed on the second surface, the first installation portion 111 is protruding from the first surface to the second surface), so as to realize the rapid positioning of the bottom guard plate 100 and the battery box; the first installation portion 111 is penetrated by a first installation hole 111a, so as to connect the bottom guard plate 100 with the battery box by bolts. The edge installation area 120 is obtained by sinking the edge of the self-installation area 110 from the first surface to the second surface, so that the cross-sectional profile of the bottom guard plate 100 is a "convex" structure. A plurality of second installation parts 121 are arranged in the circumferential direction in the edge installation area 120, and a positioning part 122 protruding from the second surface to the first surface is formed between two adjacent second installation parts 121 (when observed on the second surface, the positioning part 122 is recessed from the second surface to the first surface) to achieve rapid positioning of the bottom guard plate 100 and the frame structure; the second installation part 121 is penetrated by a second installation hole 121a to connect the bottom guard plate 100 to the frame structure by bolts.

[0044] It should be noted that Figure 1 The bottom guard plate 100 structure shown is only used as an example to illustrate the utility model. In specific implementation, the structure of the bottom guard plate 100 can be adjusted according to the actual battery box and frame structure, and the number of the first mounting hole 111a and the second mounting hole 121a etc. can also be adaptively adjusted according to the battery box and frame structure, which is not limited in this embodiment.

[0045] The punching and trimming die for the bottom guard plate of the automobile battery box of the utility model can synchronously punch and trim the bottom guard plate 100 after being stretched and formed in the previous process, and the first mounting part 111 and the positioning part 122 and the second mounting part 121 are stretched and formed on the bottom guard plate 100 by the stretching die 200 in the previous process, and then the punching and trimming die of this embodiment is used to synchronously punch holes on the first mounting part 111 and the second mounting part 121 and synchronously cut off the outer periphery of the bottom guard plate 100 to fix the bottom guard plate 100 in the previous process and prevent the bottom guard plate 100 from wrinkling, cracking, etc. during the stamping process. The pressing edge (not shown in the figure, the pressing edge does not belong to the structure of the finished product), in this way, the molding process of the entire bottom guard plate 100 is integrated into two sets of molds, that is, the stretching mold 200 performs the stretching and molding process on the bottom guard plate 100, and the punching and trimming mold of the utility model performs the punching and trimming process on the bottom guard plate 100. Compared with the traditional molding method of one process and one set of molds, fewer molding molds are used, which is conducive to saving production costs and improving production efficiency, and reduces the number of times the bottom guard plate 100 is transferred between molds, effectively reducing the error accumulation during the transfer process, and the molding accuracy is high. Below, the punching and trimming mold for the bottom guard plate of the automobile battery box of the utility model will be described in combination with the specific structure.

[0046] Please refer to Figure 2 The stretching die 200 includes a stretching lower die 220 and a stretching upper die 210 relatively arranged above the stretching lower die 220. The stretching upper die 210 is arranged above the stretching lower die 220 along the mold closing direction, and can drive at least one of the stretching upper die 210 and the stretching lower die 220 to move closer to or away from each other along the mold closing direction through a punch press to achieve stretching of the plate. The stretching upper die 210 is formed with a first molding surface on the side facing the stretching lower die 220, and the stretching lower die 220 is provided with a second molding surface opposite to the first molding surface on the side facing the first molding surface. Preferably, the first molding surface is contoured to the first surface of the bottom guard plate 100, and the second molding surface is contoured to the second surface of the bottom guard plate 100. During molding, the plate to be formed is loaded and positioned at a position corresponding to the second molding surface on the stretching lower die 220. When the punch press drives the stretching upper die 210 and the stretching lower die 220 to close the mold, the first molding surface and the second molding surface are spaced relative to each other to form a stretching cavity, and the first molding surface is in contact with the first surface of the bottom guard plate 100, and the second molding surface is in contact with the second surface of the bottom guard plate 100. The bottom guard plate 100 is stretch-molded by the cooperation of the first molding surface and the second molding surface.

[0047] Please refer to Figure 3 and Figure 4 The punching and trimming die for the bottom guard plate of the automobile battery box provided by the utility model comprises a punching lower die 300, a punching upper die 400 relatively arranged above the punching lower die 300, a punching mechanism 500 and a trimming mechanism 600. When it is specifically implemented, Figure 3 In the viewing direction shown, the stamping upper die 400 is arranged above the stamping lower die 300 along the Z-axis direction (that is, the closing direction of the stamping upper die 400 and the stamping lower die 300), and can drive at least one of the stamping lower die 300 and the stamping upper die 400 to approach or move away from each other along the Z-axis direction through a punch press (not shown) to achieve punching and trimming of the bottom guard plate 100; this embodiment is explained by taking the example that the stamping lower die 300 is fixed and the punch press drives the stamping upper die 400 to approach the stamping lower die 300 along the Z-axis direction to close the two. When the robot loads the bottom guard plate 100 after stretching and forming onto the stamping lower die 300, the punch press drives the stamping upper die 400 to close the stamping lower die 300, and the stamping lower die 300 cooperates with the stamping upper die 400 to press the bottom guard plate 100, and uses the punching mechanism 500 to synchronously punch out the first mounting portion 111 of the main mounting area 110 of the bottom guard plate 100 and the second mounting portion 121 of the edge mounting area 120 to form the first mounting hole 111a and the second mounting hole 121a, and uses the trimming mechanism 600 to synchronously trim the edge of the bottom guard plate 100.

[0048] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The stamping lower die 300 includes a lower die base 310, a forming base 320 disposed on the lower die base 310, a lower die plate 330 floatingly disposed on the forming base 320, and a positioning assembly 340 disposed on the forming base 320. During stamping, the bottom guard plate 100 is loaded and supported on the lower die plate 330. When the bottom guard plate 100 is loaded, the positioning assembly 340 is used to position the bottom guard plate 100 in the X-axis direction and the Y-axis direction to ensure the forming accuracy.

[0049] The side of the lower die base 310 facing away from the stamping upper die 400 is fixedly supported on the punch press, and the forming base 320 is fixed on the side of the lower die base 310 facing the stamping upper die 400. Preferably, the forming base 320 is installed on the upper surface of the lower die base 310 (i.e., the surface facing the stamping upper die 400) by means of a copper sleeve, a contour sleeve and / or a T-shaped positioning key.

[0050] A floating groove 321 is recessed in one side of the forming seat 320 corresponding to the stamping upper die 400, and the lower template 330 is floatingly supported in the floating groove 321; in specific implementation, the lower template 330 is installed in the floating groove 321 through a structure such as an equal height sleeve, so that a floating space is formed between the lower template 330 and the groove bottom of the floating groove 321, thereby enabling the lower template 330 to float or move in the Z-axis direction. Preferably, a cylinder is installed in the floating space, and the lower template 330 is floatingly supported in the floating groove 321 through the cylinder. On the one hand, after the stamping of the bottom guard plate 100 is completed, the bottom guard plate 100 can be pushed upward away from the positioning assembly 340 to facilitate the unloading of the robot. On the other hand, the bottom guard plate 100 of different thicknesses can be adapted to the stamping of the bottom guard plates 100 by moving up and down through the lower template 330; the lower template 330 is contoured with the floating groove 321, and the outer circumference of the lower template 330 is spaced from the inner circumference of the floating groove 321 to avoid interference or friction between the lower template 330 and the inner circumference of the floating groove 321 when floating or moving, thereby ensuring the smooth floating or movement of the lower template 330. The molding seat 320 is provided with a positioning groove 322 located at the periphery of the floating groove 321, and the positioning assembly 340 is installed in the positioning groove 322; preferably, the positioning groove 322 is recessed on the upper surface of the molding seat 320 and surrounds the molding seat 320, and the positioning assembly 340 is fixed in the positioning groove 322 through a copper sleeve, a height-equalizing sleeve and / or a T-shaped positioning key.

[0051] A plurality of support columns 331 are arranged on the side of the lower template 330 corresponding to the upper template 430. The plurality of support columns 331 are arranged to protrude toward the side of the upper template 430 to support the bottom guard plate 100 after the bottom guard plate 100 is loaded into place, and cooperate with the upper molding mold to hold the bottom guard plate 100, so as to provide support for the bottom guard plate 100 when the punching mechanism 500 punches downward and limit the bottom guard plate 100 in the Z-axis direction, so as to ensure that the punching mechanism 500 punches accurately.

[0052] The upper surface of the positioning assembly 340 facing the stamping upper die 400 (i.e., the first shear surface 611 described below) is contoured with the second surface of the edge installation area 120 of the bottom guard plate 100. When the bottom guard plate 100 is loaded, the edge installation area 120 of the bottom guard plate 100 can be contoured and supported on the positioning assembly 340 to achieve the positioning of the bottom guard plate 100 in the X-axis direction and the Y-axis direction to ensure the molding accuracy. In this embodiment, in order to facilitate the installation and maintenance of the positioning assembly 340, the positioning assembly 340 includes a plurality of positioning inserts 341, each of which is connected end to end and embedded in the positioning groove 322 to enclose the positioning assembly 340 to achieve the positioning of the bottom guard plate 100.

[0053] In this embodiment, the stamping lower die 300 also includes a guide wheel assembly 350 arranged on the lower template 330, which is used to introduce the bottom guard plate 100 into the lower template 330, so that the bottom guard plate 100 is supported on the lower template 330 and positioned by the positioning assembly 340, and the bottom guard plate 100 is introduced into the lower template 330 along the X-axis direction. Specifically, the guide wheel assembly 350 includes a guide wheel bracket 351 erected on the lower template 330 and a plurality of rollers 352 rotatably arranged on the guide wheel bracket 351. The rollers 352 are preferably rotatably arranged on the guide wheel bracket 351 in a non-powered manner. The rotating axis of the roller 352 is perpendicular to the introduction direction of the bottom guard plate 100, and the bottom guard plate 100 is introduced into the lower template 330 along the tangential direction of the roller 352, that is, the rotating axis of the roller 352 is parallel to the Y-axis direction. In this way, during the introduction process of the bottom guard plate 100, the lower surface of the bottom guard plate 100 contacts and is tangent to the roller 352. Through the rotation of the roller 352, the bottom guard plate 100 can be smoothly introduced into place and the friction between the bottom guard plate 100 and the lower template 330 during the introduction process can be reduced to prevent the surface wear of the bottom guard plate 100.

[0054] Please refer to Fig. 9 , Fig.10 and Fig.11 The stamping upper die 400 includes an upper die seat 410, a mounting seat 420 arranged around the upper die seat 410 and corresponding to one side of the lower die seat 310, an upper die plate 430 arranged on the mounting seat 420, and a holding assembly 440 arranged at the edge of the upper die plate 430 and corresponding to the positioning assembly 340. During stamping, the punch press drives the stamping upper die 400 downward to approach the stamping lower die 300, so that the upper die plate 430 moves downward to approach the bottom guard plate 100 positioned on the lower die plate 330 and the positioning assembly 340, and after the stamping upper die 400 and the stamping lower die 300 are closed, the edge mounting area 120 of the bottom guard plate 100 is held by the holding assembly 440, and then the bottom guard plate 100 is positioned in cooperation with the positioning assembly 340 and pressed between the upper die plate 430 and the lower die plate 330 to prevent the bottom guard plate 100 from shifting during the forming process.

[0055] The side of the upper die base 410 facing away from the stamping lower die 300 is fixed at the corresponding position of the punch press, and the mounting base 420 is fixed on the side of the upper die base 410 facing the stamping lower die 300. Preferably, the mounting base 420 is installed on the lower surface of the upper die base 410 (i.e., the surface facing the stamping lower die 300) by means of a copper sleeve, a contour sleeve and / or a T-shaped positioning key.

[0056] The mounting seat 420 is annular in structure as a whole, so that a mounting groove 421 is formed on the inner periphery of the mounting seat 420, and the mounting groove 421 is contoured with the upper template 430 so that the upper template 430 can be installed in the mounting groove 421. Preferably, the mounting groove 421 is installed in the mounting groove 421 by means of a structure such as an equal height sleeve, so that an installation space is formed between the upper template 430 and the bottom of the mounting groove 421 (that is, the lower surface of the upper mold seat 410). Preferably, a plurality of nitrogen springs are installed in the installation space to absorb and offset the impact force of the stamping upper mold 400 and the stamping lower mold 300 when the mold is closed, thereby reducing the impact force on the molding process of the mold and the bottom guard plate 100, thereby increasing the mold life and improving the molding accuracy of the bottom guard plate 100.

[0057] A plurality of support blocks 431 are disposed on the upper mold plate 430 on one side corresponding to the lower mold plate 330, and the plurality of support blocks 431 are disposed protruding toward one side of the lower mold plate 330 to press downward or support the bottom guard plate 100 after the stamping upper mold 400 and the stamping lower mold 300 are molded together. Preferably, each support block 431 is disposed corresponding to at least one support column 331 to balance the force of the support column 331 and the support block 431 acting on the bottom guard plate 100 in the Z-axis direction, so that the bottom guard plate 100 can be supported and pressed between the support column 331 and the support block 431 after the mold is molded together, and the deformation of the bottom guard plate 100 caused by the support of the support block 431 or the support column 331 alone is prevented.

[0058] The holding component 440 is installed on the lower surface of the mounting seat 420 (i.e., the surface facing the stamping lower die 300) through a height sleeve, a copper sleeve and / or a T-shaped positioning key, and the inner circumference of the holding component 440 extends inward to the bottom of the upper die plate 430, so that the edge of the upper die plate 430 can be supported on the holding component 440 to further restrict the upper die plate 430 and prevent the upper die plate 430 from falling off. The lower surface of the holding component 440 facing the positioning component 340 is contoured with the first surface of the edge mounting area 120 of the bottom guard plate 100. After the mold is closed, the lower surface of the holding component 440 can be contoured and pressed at the corresponding position of the bottom guard plate 100 to cooperate with the positioning component 340 to position and fix the bottom guard plate 100, thereby achieving the purpose of positioning and fixing the bottom guard plate 100 in the X-axis direction and the Y-axis direction, ensuring the molding accuracy. In this embodiment, to facilitate installation and maintenance of the pressing assembly 440, the pressing assembly 440 includes a plurality of pressing inserts 441, each of which is connected end to end in the circumferential direction and is installed circumferentially on the lower surface of the mounting seat 420 to enclose the pressing assembly 440.

[0059] Please refer to Figure 8 and Fig.11The punching mechanism 500 includes a clearance component 510 arranged on the stamping lower die 300 and corresponding to one side of the stamping upper die 400, and a punching component 520 arranged on the stamping upper die 400 and cooperating with the clearance component 510 for punching. The end of the punching component 520 corresponding to the stamping lower die 300 can extend downward or retract into the corresponding surface of the stamping upper die 400 to cooperate with the clearance component 510 to punch the mounting hole of the bottom guard plate 100. When the bottom guard plate 100 is loaded onto the lower template 330, the first mounting portion 111 and the second mounting portion 121 that have been stretched and formed are supported at the corresponding positions of the making way component 510, and the stamping upper die 400 is closed under the drive of the punch press, so that the punching component 520 is corresponding to the corresponding positions of the first mounting portion 111 and the second mounting portion 121, and the punching component 520 is controlled to punch downward to form a first mounting hole 111a on the first mounting portion 111 and a second mounting hole 121a on the second mounting portion 121.

[0060] The giving way component 510 is arranged in the floating groove 321 and passes through the lower mold plate 330 in the direction close to the stamping upper mold 400 to be opposite to the punching component 520 and / or is arranged in the positioning groove 322 and is flush with the corresponding surface of the positioning component 340 to be opposite to the punching component 520. When the giving way component 510 is arranged in the floating groove 321, the giving way component 510 corresponds to the main installation area 110 of the bottom guard plate 100 to cooperate with the corresponding punching component 520 to punch out the first installation hole 111a at the position of the first installation portion 111, and when the giving way component 510 is arranged in the positioning groove 322, the giving way component 510 corresponds to the edge installation area 120 of the bottom guard plate 100 to cooperate with the corresponding punching component 520 to punch out the second installation hole 121a at the position of the second installation portion 121.

[0061] The yielding assembly 510 includes a plurality of main yielding structures 511 disposed in the floating groove 321 and / or a plurality of edge yielding structures 512 embedded in the positioning assembly 340. The main yielding structures 511 are disposed corresponding to the main mounting area 110, and one main yielding structure 511 may correspond to one or more first mounting portions 111, so that the first mounting portions 111 are supported on the main yielding structures 511, and the edge yielding structures 512 are disposed corresponding to the edge mounting area 120, and a plurality of edge yielding structures 512 are disposed in the positioning assembly 340 along the circumferential direction, and one edge yielding structure 512 corresponds to one second mounting portion 121, so that the second mounting portion 121 is supported on the corresponding edge yielding structure 512. In the present embodiment, since mounting holes need to be punched in both the main mounting area 110 and the edge mounting area 120 of the bottom guard plate 100, in the specific implementation of the present embodiment, both the main yielding structure and the edge yielding structure 512 are provided to synchronously punch the first mounting hole 111a and the second mounting hole 121a; it is understandable that in some other embodiments, according to the stamping requirements of the mounting holes, only the main yielding structure 511 or only the edge yielding structure 512 may be provided to realize the stamping of the corresponding mounting holes.

[0062] The main clearance structure 511 includes a first punching station 5111 arranged in the floating groove 321 and penetrating the floating groove 321 toward the upper template 430, and at least one first clearance hole 5112 formed in the first punching station 5111; when the bottom guard plate 100 is loaded and formed, the first mounting portion 111 is supported on the first punching station 5111 to support the main mounting area 110 of the bottom guard plate 100 during the punching process to prevent the bottom guard plate 100 from being deformed by excessive force during the punching process; the first clearance hole 5112 is arranged corresponding to the first mounting hole 111a to make way for the punching assembly 520 to ensure that the first mounting hole 111a is punched out at the corresponding position of the bottom guard plate 100. The edge clearance structure 512 includes a second punching station 5121 embedded in the positioning assembly 340 and a second clearance hole 5122 formed in the second punching station 5121; when the bottom guard plate 100 is loaded and formed, the second mounting portion 121 is supported on the second punching station 5121 to support the edge mounting area 120 of the bottom guard plate 100 during the punching process to prevent the bottom guard plate 100 from being deformed due to excessive force during the punching process; the second clearance hole 5122 is arranged corresponding to the second mounting hole 121a to make way for the punching assembly 520 to ensure that the second mounting hole 121a is punched out at the corresponding position of the bottom guard plate 100.

[0063] The punching assembly 520 is arranged in the installation groove 421 and passes through the upper mold plate 430 in the direction close to the stamping lower mold 300, and is opposite to the giving way assembly 510 and / or is arranged in the installation seat 420 and passes through the pressing assembly 440 in the direction close to the stamping lower mold 300, and is opposite to the giving way assembly 510. When the punching assembly 520 is arranged in the installation groove 421, the punching assembly 520 corresponds to the main installation area 110 of the bottom guard plate 100, so as to cooperate with the giving way assembly 510 at this position to punch out the first installation hole 111a at the position of the first installation portion 111, and when the punching assembly 520 is arranged in the positioning groove 322, the punching assembly 520 corresponds to the edge installation area 120 of the bottom guard plate 100, so as to cooperate with the giving way assembly 510 at this position to punch out the second installation hole 121a at the position of the second installation portion 121.

[0064] The punching assembly 520 includes a main punching knife group 521 arranged in the installation groove 421 and corresponding to the main yielding structure 511 and / or an edge punching knife group 522 embedded in the installation seat 420 and corresponding to the edge yielding structure 512. When the stamping upper die 400 and the stamping lower die 300 are molded, the main punching knife group 521 is pressed against the main yielding structure 511 (specifically the first punching platform 5111) through the bottom guard plate 100 to cooperate with the first yielding hole 5112 to punch the first installation hole 111a; at the same time, the edge punching knife group 522 is pressed against the edge yielding structure 512 (i.e., the second punching platform 5121) at the corresponding position through the bottom guard plate 100 to cooperate with the second yielding hole 5122 to punch the second installation hole 121a.

[0065] The main punching knife group 521 includes a first fixed seat 5211 disposed in the mounting groove 421, a first punching cylinder 5212 built in the first fixed seat 5211, and a first punching needle 5213 fixed on the output shaft of the first punching cylinder 5212 and capable of extending out of the upper template 430. When punching the first mounting hole 111a, the first punching needle 5213 abuts against the bottom guard plate 100 at a position corresponding to the first clearance hole 5112, and is driven to extend by the first punching cylinder 5212 to penetrate the bottom guard plate 100 downward and extend into the first clearance hole 5112, thereby forming the first mounting hole 111a on the bottom guard plate 100. The edge punching knife group 522 includes a second punching cylinder 5221 built in the mounting seat 420, and a second punching needle 5222 fixed on the output shaft of the second punching cylinder 5221 and capable of extending out of the pressing assembly 440. When punching the second mounting hole 121a, the second punch needle 5222 abuts against the bottom guard plate 100 at a position corresponding to the second clearance hole 5122, and the second punch needle 5222 is driven to extend through the second punching cylinder 5221 to penetrate downward through the bottom guard plate 100 and extend into the second clearance hole 5122, thereby forming the second mounting hole 121a on the bottom guard plate 100.

[0066] The trimming mechanism 600 includes a lower trimming knife group 610 disposed on the stamping lower die 300 and corresponding to one side of the stamping upper die 400, and an upper trimming knife group 620 disposed on the stamping upper die 400 and cooperating with the lower trimming knife group 610 for trimming. When the bottom guard plate 100 is loaded and positioned on the positioning assembly 340, the edge of the bottom guard plate 100 is supported on the lower trimming knife group 610 and the edge of the bottom guard plate 100 is outwardly beyond the lower trimming knife group 610, the upper trimming knife group 620 is correspondingly located above the edge, and the upper trimming knife group 620 is staggered and arranged in parallel with the lower trimming knife group 610. When the upper trimming knife group 620 moves downward with the stamping upper die 400 to close the mold, the upper trimming knife group 620 contacts the edge and applies force downward, and then cooperates with the lower trimming knife group 610 to cut off the edge, thereby achieving synchronous trimming of the bottom guard plate 100.

[0067] The lower trimming knife group 610 includes a first shearing surface 611 formed on the positioning component 340 and facing the upper trimming knife group 620, and a second shearing surface 612 formed on the periphery of the positioning component 340. The first shearing surface 611 is also the upper surface of the positioning component 340. Integrating the first shearing surface 611 and the second shearing surface 612 on the positioning component 340 can eliminate the need for an additional lower trimming knife group 610, thereby simplifying the overall structure of the mold and saving the installation time of the mold. The upper trimming tool group 620 includes a trimming punch 621 arranged on the upper mold base 410 and corresponding to the periphery of the mounting base 420 and / or the holding assembly 440, a third shearing surface 622 formed on the trimming punch 621 and facing the first shearing surface 611, and a fourth shearing surface 623 formed on the inner periphery of the trimming punch 621. The trimming punch 621 and the projection of the lower trimming tool group 610 (or the positioning assembly 340) on the XY plane are offset, so that the third shearing surface 622 and the projection of the first shearing surface 611 on the horizontal plane are offset. At the same time, the third shearing surface 622 exceeds the corresponding surface of the holding assembly 440 toward the direction of the lower trimming tool group 610 to form the fourth shearing surface 623 on the inner periphery of the trimming punch 621. When the stamping lower die 300 and the stamping upper die 400 are closed, the edge of the bottom guard plate 100 is supported on the first shear surface 611, and the fourth shear surface 623 is attached to the second shear surface 612 so that the third shear surface 622 presses the edge of the bottom guard plate 100 downward to cooperate with the first shear surface 611 to cut off the edge and realize the trimming of the bottom guard plate 100.

[0068] The punching and trimming die of the present embodiment also includes a lower waste knife group 710 arranged on the periphery of the lower trimming knife group 610 and an upper waste knife group 720 arranged on the periphery of the upper trimming knife group 620 and corresponding to the lower waste knife group 710; because the lower trimming knife group 610 and the upper trimming knife group 620 cut off the pressing edge in the Z-axis direction along the circumferential direction as a whole when trimming the bottom guard plate 100, so that the cut pressing edge is a closed ring structure as a whole, which is not conducive to the recycling and treatment of waste materials. By arranging the lower waste knife group 710 and the upper waste knife group 720 to cooperate, the pressing edge can be cut off to facilitate recycling. Specifically, the lower waste knife group 710 includes a plurality of lower cutters 711 distributed circumferentially on the periphery of the lower trimming knife group 610, and the upper waste knife group 720 includes an upper cutter 721 circumferentially arranged on the periphery of the upper trimming knife group 620 and corresponding to the lower cutters 711 one by one. The blades of the lower cutter 711 and the upper cutter 721 are staggered and arranged in parallel. After mold closing, the first shearing surface 611 cooperates with the second shearing surface 612 to cut off the pressure edge. At the same time, the upper cutter 721 approaches the lower cutter 711 downward and cooperates with the lower cutter 711 to cut off the pressure edge (i.e., trimming waste), so that the broken pressure edge can fall smoothly for easy recycling.

[0069] Please refer to Figure 3 The punching and trimming die of this embodiment also includes a waste guide assembly to facilitate the collection of waste after punching and trimming. The waste guide assembly includes a first waste guide plate 810 arranged on the stamping lower die 300 and corresponding to the position of the lower trimming knife group 610, and a second waste guide plate 820 arranged in the stamping lower die 300 and corresponding to the position of the give-way assembly 510. The first guide plate is tilted below the lower waste knife group 710, so that the cut edge can fall onto the first guide plate and the waste after punching by the edge punching knife group 522 can fall onto the first guide plate through the notch formed on the periphery of the forming seat 320 and connected to the second give-way hole 5122, and slide to the end of the first waste guide plate 810 through the first guide plate, and then be cleaned and recycled uniformly; the second guide plate is arranged in the stamping lower die 300, specifically, the first give-way hole 5112 is arranged through the first punching table 5111, and a connecting hole connected with the first making way hole 5112 is formed through the position of the lower mold base 310 and the forming base 320 corresponding to the first making way hole 5112, and the second waste agent is inclinedly arranged below the connecting hole and / or horizontally supported below the connecting hole, so that the waste after punching by the main punching knife group 521 can fall onto the second waste guide plate 820 through the connecting hole, and then be uniformly cleaned and recycled after being guided out by the second waste guide plate 820.

[0070] The punching and trimming die of this embodiment also includes a guiding mechanism arranged between the stamping lower die 300 and the stamping upper die 400 to guide the stamping lower die 300 and the stamping upper die 400 when they are clamped together, ensuring that the stamping lower die 300 and the stamping upper die 400 are accurately clamped together, thereby ensuring the molding accuracy of the bottom guard plate 100. Specifically, the guiding mechanism includes a guide sleeve 910 arranged on the stamping lower die 300 and a guide column 920 arranged on the stamping upper die 400 and correspondingly cooperating with the guide sleeve 910 for guidance. The guide sleeve 910 is provided with a guide groove 911 along the Z-axis direction. The guide groove 911 is open at least at one end facing the guide column 920, and the inner diameter of the guide groove 911 is adapted to the guide column 920. When the stamping upper die 400 and the stamping lower die 300 are closed, the guide column 920 can extend into the guide groove 911 and move along the guide groove 911 to realize the guidance of the stamping lower die 300 and the stamping upper die 400.

[0071] When the present embodiment is in use, first, the stamping upper die 400 is controlled to move upward as a whole, and a loading and unloading operation space for the manipulator is reserved between the stamping upper die 400 and the stamping lower die 300; then, the manipulator is controlled to introduce the bottom guard plate 100 after stretching into the lower template 330 along the X-axis direction. After being introduced into place, the rollers 352 and the support columns 331 support the main installation area 110 of the bottom guard plate 100, and the edge installation area 120 of the bottom guard plate 100 is positioned and supported on the peripheral positioning component 340; then, the stamping upper die 400 is controlled to move downward and close the stamping upper die 400 with the cooperation of the guide columns 920 and the guide grooves 911, so that the holding component 440 cooperates with the positioning component 340 and the support columns 331. 331 cooperates with the support block 431 to press the bottom guard plate 100. During the clamping process of the stamping upper die 400 and the stamping lower die 300, the first shear surface 611 cooperates with the third shear surface 622 for trimming, and the lower cutter 711 cooperates with the upper cutter 721 to cut off the trimming waste. At the same time, the first punch needle 5213 and the second punch needle 5222 are controlled to extend out to correspondingly punch the first mounting hole 111a and the second mounting hole 121 on the first mounting part 111 and the second mounting part 121; finally, the stamping upper die 400 is controlled to move upward, and the cylinder in the through-hole floating groove 321 is synchronously used to lift the lower template 330 upward, so that the bottom guard plate 100 is separated from the positioning assembly 340, and then the robot is controlled to unload the bottom guard plate 100.

[0072] The punching and trimming die for the bottom guard plate of the automobile battery box of the utility model integrates the punching process and the trimming process of the bottom guard plate 100 into the same set of molds by setting a punching mechanism 500 and a trimming mechanism 600, which can effectively save the stamping process to improve the molding efficiency, and can also save the mold opening cost and mold opening efficiency; at the same time, by setting a lower waste knife group 710 and an upper waste knife group 720 to cooperate in cutting the edge pressing waste after punching, the edge pressing waste can be cut into small pieces, which is convenient for waste recycling and processing. In addition, the utility model also sets a guide wheel assembly 350 on the lower template 330, and the guide wheel assembly 350 is used to support and lubricate the bottom guard plate 100 when loading the material, which can effectively reduce the friction between the bottom guard plate 100 and the lower template 330, and ensure that the surface of the bottom guard plate 100 is smooth.

Claims

1. A punching and trimming die for the bottom guard plate of an automobile battery box, comprising a punching lower die and a punching upper die arranged relatively above the punching lower die, characterized in that: It also includes a punching mechanism and a trimming mechanism, the punching mechanism includes a clearance component arranged on the stamping lower die and corresponding to one side of the stamping upper die, and a punching component arranged on the stamping upper die and cooperating with the clearance component for punching, the trimming mechanism includes a lower trimming knife group arranged on the stamping lower die and corresponding to one side of the stamping upper die, and an upper trimming knife group arranged on the stamping upper die and cooperating with the lower trimming knife group for trimming, one end of the punching assembly corresponding to the stamping lower die can extend downward or retract to the corresponding surface of the stamping upper die to cooperate with the clearance component to punch the mounting hole of the bottom guard plate, and the upper trimming knife group is staggered and arranged in parallel with the lower trimming knife group to cooperate to achieve synchronous trimming of the bottom guard plate.

2. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 1, characterized in that: The stamping lower die includes a lower die base, a forming base arranged on the lower die base, a lower template floatingly arranged on the forming base, and a positioning assembly arranged on the forming base, a floating groove is recessed on one side of the forming base corresponding to the stamping upper die, the lower template is floatingly supported in the floating groove and the outer circumferential surface of the lower template is spaced apart from the inner circumferential surface of the floating groove, a positioning groove located at the periphery of the floating groove is arranged on the forming base, the positioning assembly is installed in the positioning groove, the giving way assembly is arranged in the floating groove and passes through the lower template in the direction close to the stamping upper die to be opposite to the punching assembly and / or is arranged in the positioning groove and is flush with the corresponding surface of the positioning assembly to be opposite to the punching assembly.

3. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 2, characterized in that: The stamping lower die also includes a guide wheel assembly arranged on the lower template, and the guide wheel assembly includes a guide wheel bracket upright on the lower template and a plurality of rollers rotatably arranged on the guide wheel bracket, the rotating shaft of the roller is perpendicular to the introduction direction of the bottom guard plate, and the bottom guard plate is introduced into the lower template along the tangent direction of the roller.

4. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 2, characterized in that: The stamping upper die includes an upper die seat, a mounting seat arranged in a ring on the upper die seat and corresponding to one side of the lower die seat, an upper template arranged on the mounting seat, and a holding assembly arranged on the edge of the upper template and corresponding to the positioning assembly, the holding assembly cooperates with the positioning assembly to position the bottom guard plate, a mounting groove is formed on the inner periphery of the mounting seat, the upper template is installed in the mounting groove, the punching assembly is arranged in the mounting groove and passes through the upper template in a direction close to the stamping lower die and is opposite to the making way assembly and / or is arranged in the mounting seat and passes through the holding assembly in a direction close to the stamping lower die and is opposite to the making way assembly.

5. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 4, characterized in that: A plurality of support columns are arranged on the side of the lower template corresponding to the upper template, and a plurality of support blocks are arranged on the side of the upper template corresponding to the lower template. Each support block is arranged corresponding to at least one support column. When the stamping lower die and the stamping upper die are closed, the bottom guard plate is supported and pressed between the support columns and the support blocks.

6. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 4, characterized in that: The bottom guard plate includes a main mounting area and an edge mounting area integrally formed at the periphery of the main mounting area, the main mounting area is provided with a plurality of first mounting holes, and the edge mounting area is provided with a plurality of second mounting holes; The yielding assembly includes a plurality of main yielding structures arranged in the floating groove and / or a plurality of edge yielding structures embedded in the positioning assembly, and the plurality of edge yielding structures are arranged in the positioning assembly along the circumferential direction; the main yielding structure includes a first punching station arranged in the floating groove and penetrating out of the floating groove in a direction close to the upper template, and at least one first yielding hole formed in the first punching station, and the first yielding hole is arranged corresponding to the first mounting hole; the edge yielding structure includes a second punching station embedded in the positioning assembly and a second yielding hole formed in the second punching station, and the second yielding hole is arranged corresponding to the second mounting hole; The punching assembly includes a main punching knife group arranged in the mounting groove and corresponding to the main yield structure one by one and / or an edge punching knife group embedded in the mounting seat and corresponding to the edge yield structure one by one, the main punching knife group includes a first fixed seat arranged in the mounting groove, a first punching cylinder built in the first fixed seat, and a first punching needle fixed on the output shaft of the first punching cylinder and capable of extending out of the upper template, the edge punching knife group includes a second punching cylinder built in the mounting seat and a second punching needle fixed on the output shaft of the second punching cylinder and capable of extending out of the holding assembly, when the stamping lower die and the stamping upper die are closed, the first punching needle should extend into the first yield hole and / or the second punching needle should extend into the second yield hole.

7. The punching and trimming die for the bottom guard plate of the automobile battery box according to claim 4, characterized in that: The lower trimming knife group includes a first shearing surface formed on the positioning assembly and facing the direction of the upper trimming knife group, and a second shearing surface formed on the outer periphery of the positioning assembly; The upper trimming tool group includes a trimming punch arranged on the upper die seat and corresponding to the periphery of the mounting seat and / or the holding assembly, a third shearing surface formed on the trimming punch and facing the first shearing surface, and a fourth shearing surface formed on the inner periphery of the trimming punch, the third shearing surface extends beyond the corresponding surface of the holding assembly toward the lower trimming tool group, and the projections of the third shearing surface and the first shearing surface on the horizontal plane are offset. When the stamping lower die and the stamping upper die are closed, the edge of the bottom guard plate is supported on the first shearing surface, and the fourth shearing surface is attached to the bottom of the second shearing surface so that the third shearing surface cooperates with the first shearing surface for trimming.

8. The punching and trimming die for the bottom guard plate of the automobile battery box according to any one of claims 1 to 7, characterized in that: It also includes a lower waste knife group arranged on the periphery of the lower trimming knife group and an upper waste knife group arranged on the periphery of the upper trimming knife group and corresponding to the lower waste knife group; The lower waste knife group includes a plurality of lower cutters distributed circumferentially around the lower trimming knife group, and the upper waste knife group includes upper cutters circumferentially arranged around the upper trimming knife group and corresponding one to one with the lower cutters, and the blades of the lower cutters and the upper cutters are staggered and arranged in parallel to cooperate in cutting off the trimming waste around the bottom guard plate.

9. The punching and trimming die for the bottom guard plate of the automobile battery box according to any one of claims 1 to 7, characterized in that: It also includes a waste guide assembly, which includes a first waste guide plate arranged on the stamping lower die and corresponding to the position of the lower trimming knife group, and a second waste guide plate arranged in the stamping lower die and corresponding to the position of the make way assembly.

10. The punching and trimming die for the bottom guard plate of the automobile battery box according to any one of claims 1 to 7, characterized in that: It also includes a guide mechanism arranged between the stamping lower die and the stamping upper die, and the guide mechanism includes a guide sleeve arranged on the stamping lower die and a guide column arranged on the stamping upper die and correspondingly cooperating with the guide sleeve for guidance.

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