Outdoor charging pile sheet metal stamping die

Abstract

The application provides an outdoor charging pile sheet metal stamping die, which comprises a lower die plate, a support platform of a punch press is fixedly connected with the lower die plate; an upper die plate, a hydraulic shaft of the punch press is fixedly connected with the upper die plate, and a pressure cavity one is formed in the upper die plate; and a concave die part, which is arranged on the top of the lower die plate and is used for accommodating a blank. The application belongs to the technical field of stamping dies. In the demolding process after the stamping of the blank is completed, the convex die is actively separated from the shell by changing the diameter of the convex die, so that the shell is prevented from being tightly wrapped on the convex die and affecting the demolding efficiency, and damage caused by the friction between the shell and the convex die during demolding is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of stamping dies, and particularly relates to a sheet metal stamping die for an outdoor charging pile. BACKGROUND

[0002] An outdoor charging pile is a technology-intensive product, and its development is evolving towards the direction of high power (super charging), intelligence, high reliability and user experience optimization. The pile body of a charging pile is usually made of high-strength steel or flame-retardant engineering plastic, and is structurally solid and has a certain impact resistance. At the same time, it must also reach IP54 (dustproof and splash-proof) or above, and the mainstream fast charging pile usually requires IP55 or IP65 (dustproof and splash-proof) to ensure safe operation in rainy and snowy weather.

[0003] In the prior art, in order to improve the protection performance of the pile body shell and reduce the splicing gap on the surface of the pile body shell, the shell of the pile body is usually produced by stamping and integrally forming. However, since the charging pile is usually columnar, after the male die stamps the shell, the shell will be tightly wrapped around the surface of the male die, which affects the subsequent demolding, and forcibly demolding will also cause damage to the shell, affecting the quality of the shell. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a sheet metal stamping die for an outdoor charging pile, which can actively separate the male die from the shell by changing the diameter of the male die in the demolding process after the blank stamping is completed, thereby avoiding the shell being tightly wrapped around the male die to affect the demolding efficiency, and also effectively avoiding damage caused by friction between the shell and the male die during demolding.

[0005] To solve the above problems, the present application provides a sheet metal stamping die for an outdoor charging pile, comprising:

[0006] a lower die plate fixedly connected with a support platform of a punch press;

[0007] an upper die plate fixedly connected with a hydraulic shaft of the punch press, and a pressure cavity one is formed in the upper die plate;

[0008] a female die member arranged at the top of the lower die plate and used for accommodating a blank;

[0009] a male die member connected at the bottom of the upper die plate and used for stamping the blank, the male die member comprising a connecting table, a male die plate and a circular table, the connecting table is fixedly connected with the upper die plate, a gas hole in communication with the pressure cavity one is formed at the bottom of the circular table, a plurality of male die plates are slidably connected at the bottom of the connecting table outside the gas hole, the plurality of male die plates are sequentially spliced to form an annular die column, and a circular table for adjusting the shape of the die column is slidably connected at the bottom of the male die plate;

[0010] A guide assembly is arranged between the upper die plate and the lower die plate to assist in die closing, the guide assembly comprising a sleeve, a piston and a connecting rod, the sleeve being fixedly connected to the lower die plate, the piston being slidingly connected in the sleeve, the top of the piston being fixedly connected to the upper die plate through the connecting rod, the connecting rod being provided with an air passage one in communication with the pressure cavity one, and the bottom of the outer wall of the connecting rod being provided with an air inlet groove in communication with the air passage one.

[0011] Further, the male die plate is mainly composed of a plurality of driving die plates and a plurality of driven die plates, the driving die plates and the driven die plates are staggered, the bottom of the driving die plate is slidingly connected to the circular table, and the outer walls on both sides of the driving die plate are gradually raised from outside to inside to form a guide surface one, and the side wall of the driven die plate is processed with a slope one matched with the guide surface one.

[0012] Further, the diameter of the circular table gradually decreases from bottom to top, so that the side wall of the circular table forms a guide surface two, and the bottom of the male die plate is processed with a slope two matched with the guide surface two.

[0013] Further, the female die assembly comprises a female die plate, a sliding block and an adjusting unit, the female die plate is provided with a plurality of female die plates, and the plurality of female die plates are sequentially spliced to form a cavity for stamping a blank, the bottom of the female die plate is fixedly connected with a sliding block, the top of the lower die plate is provided with a sliding groove for sliding of the sliding block, and the sliding block is connected with the sliding groove through the adjusting unit.

[0014] Further, the adjusting unit comprises a guide shaft and a positioning shaft, the side wall of the sliding groove is provided with a guide groove, the guide shaft is slidingly connected in the guide groove, one end of the guide shaft extending out of the guide groove is fixedly connected with the sliding block, a positioning groove is downwardly formed in the middle of the guide groove, the positioning shaft is slidingly connected in the positioning groove, and the bottom of the guide shaft is provided with a insertion hole for insertion of the positioning shaft.

[0015] Further, the lower die plate is provided with a pressure cavity two in communication with the guide groove and the positioning groove, the bottom of the pressure cavity two is connected with a solenoid valve for pressure balance, and the bottom of the sleeve is provided with an air passage two in communication with the pressure cavity two.

[0016] Further, the bottom of the lower die plate is fixedly connected with an expansion table, the top of the expansion table is provided with a receiving groove, and the receiving groove is connected with a support table for supporting the blank through a support spring.

[0017] Further, the bottom of the upper die plate is slidingly connected with a plurality of connecting shafts outside the connecting table, the top of the connecting shaft is penetrating through the upper die plate and fixedly connected with an anti-drop block, the bottom of the connecting shaft is fixedly connected with a pressing ring, and the bottom of the pressing ring is processed with a slope three for positioning the blank.

[0018] In summary, the present application has at least one of the following beneficial technical effects:

[0019] 1. The outdoor charging pile sheet metal stamping die, through the setting of the guide assembly and the male die piece, multiple male die pieces can be combined into a complete die column when the circular table and the blank body are in contact, the stamping effect of the charging pile shell after die closing is guaranteed, and finally when the upper die plate and the male die piece reset, the piston in the guide assembly will press air into the die column to make the circular table move down, so that the multiple male die pieces retract, the die column actively separates from the shell, completely eliminates damage during demolding, and improves the stamping forming quality of the charging pile shell.

[0020] 2. The outdoor charging pile sheet metal stamping die, through the setting of the female die piece, can actively disassemble during demolding, so that the female die piece and the outer wall of the shell are separated, at this time the outer wall of the shell is not damaged by friction during demolding, and the stamping quality of the charging pile shell is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a structural schematic diagram of an outdoor charging pile sheet metal stamping die of the present application.

[0023] Figure 2 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application when placing a blank.

[0024] Figure 3 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application when positioning a blank.

[0025] Figure 4 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application before stamping a blank.

[0026] Figure 5 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application when stamping a blank.

[0027] Figure 6 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application after blank stamping is completed.

[0028] Figure 7 is a state schematic diagram of the outdoor charging pile sheet metal stamping die of the present application when the upper die plate resets.

[0029] Figure 8It is a state diagram of the upper die plate of the outdoor charging pile sheet metal stamping die after resetting of the application.

[0030] Figure 9 It is a structure diagram of the upper die plate and the male die of the outdoor charging pile sheet metal stamping die of the application.

[0031] Figure 10 It is a structure diagram of the pressure cavity two in the lower die plate of the outdoor charging pile sheet metal stamping die of the application.

[0032] Figure 11 It is a structure diagram of the lower die plate and the female die of the outdoor charging pile sheet metal stamping die of the application.

[0033] Figure 12 It is an exploded view of the male die of the outdoor charging pile sheet metal stamping die of the application.

[0034] Figure 13 It is a state diagram of the outdoor charging pile sheet metal stamping die when the die column is changed in diameter.

[0035] The reference signs are shown as follows:

[0036] 1, lower die plate; 2, upper die plate; 3, female die; 31, female die plate; 32, sliding block; 33, adjusting unit; 331, guide shaft; 332, positioning shaft; 4, male die; 41, connecting table; 42, male die plate; 421, driving die plate; 422, driven die plate; 43, circular table; 5, guide assembly; 51, sleeve; 52, piston; 53, connecting rod; 6, pressure cavity one; 7, air hole; 8, air channel one; 9, air inlet groove; 10, guide surface one; 11, inclined surface one; 12, guide surface two; 13, inclined surface two; 14, sliding groove; 15, guide groove; 16, positioning groove; 17, insertion hole; 18, pressure cavity two; 19, electromagnetic valve; 20, air channel two; 21, expansion table; 22, containing groove; 23, supporting spring; 24, supporting table; 25, connecting shaft; 26, anti-dropping block; 27, pressing ring; 28, inclined surface three. DETAILED DESCRIPTION

[0037] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0038] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply a relative importance or an ordering between the indicated technical features. Thus, a feature defined with "first", "second", etc. can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0041] In conjunction with Figure 1 - Figure 13 As shown, according to the embodiment of the present application, an outdoor charging pile sheet metal stamping die is provided, comprising:

[0042] A lower die plate 1 is fixedly connected with the support platform of the punch;

[0043] An upper die plate 2 is fixedly connected with the hydraulic shaft of the punch, and a pressure cavity one 6 is formed in the upper die plate 2;

[0044] A concave die 3 is arranged on the top of the lower die plate 1 and used for accommodating a blank;

[0045] A convex die 4 is connected to the bottom of the upper die plate 2 and used for stamping the blank, the convex die 4 comprises a connecting table 41, a convex die plate 42 and a circular table 43, the connecting table 41 is fixedly connected with the upper die plate 2, the bottom of the circular table 43 is provided with a gas hole 7 in communication with the pressure cavity one 6, and a plurality of convex die plates 42 are slidably connected to the outside of the gas hole 7 at the bottom of the connecting table 41, the plurality of convex die plates 42 are sequentially spliced to form an annular die column, and the bottom of the convex die plate 42 is slidably connected with the circular table 43 for adjusting the shape of the die column;

[0046] A guide assembly 5 is arranged between the upper die plate 2 and the lower die plate 1 and used for assisting the die closing, the guide assembly 5 comprises a sleeve 51, a piston 52 and a connecting rod 53, the sleeve 51 is fixedly connected with the lower die plate 1, the piston 52 is slidably connected in the sleeve 51, the top of the piston 52 is fixedly connected with the upper die plate 2 through the connecting rod 53, the connecting rod 53 is provided with an air channel 8 which is in communication with the pressure cavity 1, and the bottom of the outer wall of the connecting rod 53 is provided with an air inlet groove 9 which is in communication with the air channel 8.

[0047] In the embodiment, it is observed that Figure 1 It can be found that by arranging the lower die plate 1 which is connected with the support platform of the punch press, the upper die plate 2 which is fixedly connected with the hydraulic shaft of the punch press, the top of the lower die plate 1 is connected with the concave die 3 for accommodating the blank, and the bottom of the upper die plate 2 is connected with the convex die 4 for stamping the blank, the upper die plate 2 can be lowered with the convex die 4 to close the concave die 3 when the hydraulic shaft of the punch press is lowered, so that the blank is stamped into the shape of the pile shell.

[0048] However, after the convex die stamps the shell, the shell will be tightly wrapped around the surface of the convex die, which will affect the subsequent demolding, and forcibly demolding will also cause damage to the shell, affecting the quality of the shell.

[0049] Therefore, in the Figure 1 It can also be seen that the guide assembly 5 is arranged between the upper die plate 2 and the lower die plate 1 and used for assisting the die closing, and Figure 9 and Figure 10 It can be seen that the guide assembly 5 comprises the sleeve 51, the piston 52 and the connecting rod 53, the sleeve 51 is fixedly connected with the lower die plate 1, the piston 52 is slidably connected in the sleeve 51, the top of the piston 52 is fixedly connected with the upper die plate 2 through the connecting rod 53, the connecting rod 53 is provided with the air channel 8 which is in communication with the pressure cavity 1, and the bottom of the outer wall of the connecting rod 53 is provided with the air inlet groove 9 which is in communication with the air channel 8.

[0050] The convex die 4 mainly comprises the connecting table 41, the convex die plate 42 and the circular table 43, the connecting table 41 is fixedly connected with the upper die plate 2, the bottom of the circular table 43 is provided with the air hole 7 which is in communication with the pressure cavity 1, and the bottom of the connecting table 41 is slidably connected with a plurality of convex die plates 42 which are located outside the air hole 7, the plurality of convex die plates 42 are sequentially spliced to form an annular die column, and the bottom of the convex die plate 42 is slidably connected with the circular table 43 which is used for adjusting the shape of the die column.

[0051] When the charging pile shell needs to be stamped, the blank is first placed above the concave die 3 through the mechanical arm as shown in Figure 2 Subsequently, the upper die plate 2 is controlled to be lowered, the upper die plate 2 is lowered in the sleeve 51 through the connecting rod 53 with the piston 52, so that the convex die 4 can be stably inserted into the blank.

[0052] When the upper die plate 2 moves down, the circular table 43 at the bottom of the male die 4 will be in contact with the blank as shown in the state Figure 3 Figure 4 Subsequently, the contacted circular table 43 will move up relative to the plurality of male die plates 42, so that the plurality of male die plates 42 are extruded by the circular table 43.

[0053] At this time, in combination with Figure 12 It can be seen that the diameter of the circular table 43 gradually decreases from bottom to top, so that the side wall of the circular table 43 is formed with a guide surface two 12, and the bottom of the male die plate 42 is processed with a slope two 13 which is attached to the guide surface two 12. Therefore, when the circular table 43 extrudes the male die plate 42, the guide surface two 12 and the slope two 13 cooperate to convert the upward pressure into a horizontal pressure which drives the male die plate 42 to move horizontally, so that the plurality of male die plates 42 will expand outward at the same time. The guide surface two 12 is provided with a sliding table, and the slope two 13 at the bottom of the male die plate 42 is provided with a track groove for the sliding of the sliding table. Therefore, it can be ensured that the slope two 13 of the male die plate 42 is always attached to the guide surface two 12 when the circular table 43 moves up or down, so that the diameter of the die column can be stably adjusted.

[0054] However, when the plurality of male die plates 42 expand or contract, the distance between the adjacent two male die plates 42 will change, which will cause the die column to be unable to form a complete circular surface, affecting the punching forming effect of the charging pile shell.

[0055] Therefore, in combination with Figure 13 It can be seen that the male die plate 42 is mainly composed of a driving die plate 421 and a driven die plate 422. The driving die plate 421 and the driven die plate 422 are both provided with a plurality of driving die plates 421 and a plurality of driven die plates 422. The plurality of driving die plates 421 and the plurality of driven die plates 422 are staggered. The bottom of the driving die plate 421 is slidably connected to the circular table 43. The two side walls of the driving die plate 421 are gradually raised from outside to inside to form a guide surface one 10. The side wall of the driven die plate 422 is processed with a slope one 11 which is attached to the guide surface one 10. Meanwhile, in Figure 12 It can be seen that the side wall of the driving die plate 421 is connected with a guide rail, and the side wall of the driven die plate 422 is provided with a guide rail groove which cooperates with the guide rail. At this time, when the circular table 43 moves up, it will push the driving die plate 421 to expand. When the driving die plate 421 expands, the driven die plate 422 will expand at the same time, so that the surface of the die column is a complete circular surface after the die column is completely expanded, which improves the punching forming effect of the charging pile shell.

[0056] Returning to the above process, after the male die 4 is in contact with the blank to form a complete die column, with the continuous downward movement of the upper die plate 2, the die column will punch the blank into the female die 3 as shown in the state Figure 5 Figure 6 and

[0057] ​​Finally, when the shell stamping is completed, the upper die plate 2 is moved upward to reset, so that the connecting rod 53 pulls the piston 52 to move upward to reset in the sleeve 51. When the piston 52 moves upward, the air above the sleeve 51 is squeezed, so that the air above the sleeve 51 enters the air duct one 8 through the air inlet groove 9, and then enters the mold column formed by the plurality of punch plates 42 through the pressure cavity one 6 and the air hole 7. At this time, the air pressure in the mold column is increased, and the air pushes the circular table 43 to move downward, so that the driving die plate 421 and the driven die plate 422 are retracted as shown in the state, and the mold column is separated from the inner wall of the shell. At this time, the shell demolding does not contact the punch assembly 4, so that the shell can be demolded without damage. Figure 13

[0058] When the shell is demolded, the space between the bottom of the shell and the bottom of the punch assembly 4 is increased, so that the air enters the bottom of the shell through the gap between the inner wall of the shell and the surface of the mold column. During the period of air entering, the air damping between the shell and the punch assembly 4 is generated, so that the shell is prevented from falling naturally to avoid damage caused by knocking, and the stamping quality of the shell of the charging pile is further improved.

[0059] It should be noted that, in order to improve the retraction demolding efficiency of the punch assembly 3 when resetting, a reset spring (not shown in the figure) can be arranged at the bottom of the circular table 43 or between the punch plates 42 to ensure reliable retraction.

[0060] In a further preferred embodiment of the present application, during the demolding process, not only the inner wall of the shell will contact and rub with the punch assembly 4, but also the outer wall of the shell will contact and rub with the inner wall of the concave die assembly 3, which will also cause damage to the surface of the shell and increase the difficulty of demolding the shell. Therefore, it can be found that Figure 11 It can be found that the concave die assembly 3 comprises a plurality of concave die plates 31, a sliding block 32 and an adjusting unit 33. The plurality of concave die plates 31 are sequentially connected to form a cavity for stamping the blank. The bottom of the concave die plate 31 is fixedly connected with the sliding block 32. The top of the lower die plate 1 is provided with a sliding groove 14 for sliding of the sliding block 32. The sliding groove 14 is connected with the sliding block 32 through the adjusting unit 33. The position of the sliding block 32 in the sliding groove 14 can be controlled through the adjusting unit 33, so that the plurality of concave die plates 31 are connected or separated with each other.

[0061] When the blank needs to be stamped, the plurality of concave die plates 31 will be combined and connected as shown in the state, so that a cavity for stamping the blank is formed between the plurality of concave die plates 31. Figures 1 to 6 When the stamping of the blank is completed, the adjusting unit 33 controls the concave die plate 31 to reset. At this time, the concave die plate 31 is separated from the blank, so that the blank will not contact the concave die assembly 3 when moving upward, thereby ensuring that the surface of the blank will not be damaged by friction and improving the quality of the shell.

[0062] In order to make the adjusting unit 33 automatically cooperate with the blank stamping process during use, it can be found that Figure 10 Figure 11 ​​It can be found that the adjusting unit 33 is mainly composed of a guide shaft 331 and a positioning shaft 332, a guide groove 15 is formed in the side wall of the sliding groove 14, the guide shaft 331 is slidably connected in the guide groove 15, one end of the guide shaft 331 extending out of the guide groove 15 is fixedly connected with the sliding block 32, a positioning groove 16 is formed in the middle of the guide groove 15 downward, the positioning shaft 332 is slidably connected in the positioning groove 16, a plug hole 17 for inserting the positioning shaft 332 is formed in the bottom of the guide shaft 331, a pressure cavity two 18 in communication with the guide groove 15 and the positioning groove 16 is formed in the lower die plate 1, the bottom of the pressure cavity two 18 is connected with an electromagnetic valve 19 for balancing pressure, and an air channel two 20 in communication with the pressure cavity two 18 is formed in the bottom of the sleeve 51.

[0063] At this time, when the upper die plate 2 moves downward, the piston 52 moves downward in the sleeve 51, so that the air at the bottom of the sleeve 51 is extruded into the pressure cavity two 18 through the air channel two 20, and then the air pressure in the pressure cavity two 18 pushes the guide shaft 331 to extend out of the guide groove 15, so as to push the sliding block 32 to move in the sliding groove 14, so that the plurality of die plates 31 are close to each other and spliced.

[0064] After the die plates 31 are spliced, the plug hole 17 at the bottom of the guide shaft 331 coincides with the positioning shaft 332, and at this time the positioning shaft 332 which is also pushed by the air pressure is inserted into the plug hole 17, so as to lock the die plates 31 to avoid back-off under pressure during stamping, so as to ensure that the stamping process can be stably carried out.

[0065] Finally, when the stamping process is completed, the electromagnetic valve 19 is opened, and at this time the air in the pressure cavity two 18 is discharged, so that the positioning shaft 332 loses support and resets, so as to unlock the guide shaft 331, and then when the piston 52 moves upward in the sleeve 51 to reset, the air at the bottom of the sleeve 51 is pulled up, so that negative pressure is generated in the pressure cavity two 18, and under the pulling of the negative pressure, the guide shaft 331 is sucked into the guide groove 15, so that the die plates 31 reset, realizing automatic cooperation of the adjusting unit 33 and improving the efficiency of stamping of the blank to demolding.

[0066] Note that after the upper die plate 2 is completely reset, the electromagnetic valve 19 needs to be opened again to restore the air pressure in the pressure cavity two 18, so as to ensure that the adjusting unit 33 can stably run during continuous stamping.

[0067] In a further preferred embodiment of the present application, as shown in Figure 11 the bottom of the lower die plate 1 is fixedly connected with an expansion table 21, the top of the expansion table 21 is provided with a containing groove 22, and the containing groove 22 is connected with a support table 24 for supporting the blank through a support spring 23.

[0068] In this embodiment, by supporting the blank body with the supporting spring 23 in the initial state, the interference of the blank body during the splicing of the concave die plate 31 can be reduced, thereby avoiding the deviation of the blank body, and ensuring the uniform thickness of the blank body during the stamping forming of each part of the blank body when the male die 4 moves downward to combine with the female die 3, and improving the forming effect of the blank body.

[0069] In the Figure 3 It can also be seen from the above that the bottom of the upper die plate 2 is connected with a plurality of connecting shafts 25 outside the connecting table 41 through sliding connection, the top of the connecting shaft 25 penetrates through the upper die plate 2 and is fixedly connected with an anti-coming-off block 26, the bottom of the connecting shaft 25 is fixedly connected with a pressing ring 27, and the bottom of the pressing ring 27 is processed with a bevel three 28 for positioning the blank body. At this time, when the upper die plate 2 moves downward, the bevel three 28 at the bottom of the pressing ring 27 will first contact the top edge of the blank body, so that the blank body moves after being pressed, and finally is coaxially arranged with the male die 4 under the traction of the bevel three 28, which can further ensure the stamping forming precision of the blank body.

[0070] The implementation principle of the above embodiment is that the blank body is placed on the top of the female die 3 through the mechanical arm, then the driving hydraulic shaft of the punch brings the upper die plate 2 to move downward, the male die 4 is brought into contact with the blank body, and the blank body is punched into the female die 3, thereby completing the stamping forming work of the charging pile shell.

[0071] After the shell is formed, the upper die plate 2 and the male die 4 move upward to reset, so that the connecting rod 53 pulls the piston 52 to move upward to reset in the sleeve 51. When the piston 52 moves upward, the air above the sleeve 51 is extruded, so that the air above the sleeve 51 enters the air duct one 8 through the air inlet groove 9, enters the die column composed of a plurality of male die plates 42 through the pressure cavity one 6 and the air hole 7, at this time, the air pressure in the die column increases, and the air pushes the circular table 43 to move downward, thereby making the driving die plate 421 and the driven die plate 422 retract as shown in the state Figure 13 At this time, the die column is separated from the inner wall of the shell, and the shell demolding will not be in contact with the male die 4, so that the shell can be demolded without damage.

[0072] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0073] The above is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and should not be used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An outdoor charging pile sheet metal stamping die, characterized in that, The utility model relates to a punch die set, including: Lower die plate (1) is connected with the support platform of punch die fixedly, Upper die plate (2) is connected with the hydraulic axle of punch die fixedly, and pressure cavity one (6) is seted up in upper die plate (2), Die block (3) sets up at the top of lower die plate (1) and is used for accommodating blank, Male die (4) is connected at the bottom of upper die plate (2) and is used for stamping blank, and male die (4) includes connecting table (41), male die plate (42) and circular table (43), connecting table (41) is fixedly connected with upper die plate (2), the bottom of circular table (43) is seted up gas hole (7) with pressure cavity one (6) intercommunication, the bottom of connecting table (41) is slidably connected with a plurality of male die plate (42) at the outside of gas hole (7), a plurality of male die plate (42) are sequentially spliced to form a ring-shaped die column, the bottom of male die plate (42) is slidably connected with circular table (43) for adjusting the shape of die column, Guide assembly (5) sets up between upper die plate (2) and lower die plate (1) and is used for assisting closing die, and guide assembly (5) includes sleeve (51), piston (52) and connecting rod (53), sleeve (51) is fixedly connected with lower die plate (1), piston (52) is slidably connected in sleeve (51), the top of piston (52) is fixedly connected with upper die plate (2) through connecting rod (53), and air passage one (8) is seted up in connecting rod (53) with pressure cavity one (6) intercommunication, and the bottom of the outer wall of connecting rod (53) is seted up air inlet groove (9) with air passage one (8) intercommunication, The male die plate (42) is mainly composed of the driving die plate (421) and the driven die plate (422), the driving die plate (421) and the driven die plate (422) are provided with a plurality of driving die plates (421) and a plurality of driven die plates (422), the plurality of driving die plates (421) and the plurality of driven die plates (422) are staggered, the bottom of the driving die plate (421) is slidably connected with the circular table (43), and the outer walls on both sides of the driving die plate (421) are gradually raised from outside to inside to form a guide surface (10), and the side wall of the driven die plate (422) is processed with a slope (11) matched with the guide surface (10); The diameter of the circular table (43) gradually decreases from bottom to top, so that the side wall of the circular table (43) forms a guide surface (12), and the bottom of the male die plate (42) is processed with a slope (13) matched with the guide surface (12); The die block (3) includes a plurality of die plates (31), a sliding block (32), and an adjusting unit (33), the plurality of die plates (31) are sequentially spliced to form a cavity for stamping the blank, the bottom of each die plate (31) is fixedly connected with the sliding block (32), the top of the lower die plate (1) is provided with a sliding groove (14) for sliding of the sliding block (32), and the sliding groove (14) is connected with the sliding block (32) through the adjusting unit (33). The adjusting unit (33) comprises a guide shaft (331) and a positioning shaft (332), a side wall of the chute (14) is provided with a guide groove (15), the guide shaft (331) is slidably connected in the guide groove (15), one end of the guide shaft (331) extending out of the guide groove (15) is fixedly connected with the sliding block (32), a positioning groove (16) is downwardly formed in the middle of the guide groove (15), the positioning shaft (332) is slidably connected in the positioning groove (16), and a plug hole (17) for inserting the positioning shaft (332) is formed in the bottom of the guide shaft (331); The lower mold plate (1) is provided with a pressure cavity two (18) communicated with the guide groove (15) and the positioning groove (16), the bottom of the pressure cavity two (18) is connected with an electromagnetic valve (19) for balancing pressure, and the bottom of the sleeve (51) is provided with an air channel two (20) communicated with the pressure cavity two (18).

2. The outdoor charging pile sheet metal stamping die according to claim 1, characterized in that, The bottom of the lower mold plate (1) is fixedly connected with an expansion table (21), the top of the expansion table (21) is provided with an accommodating groove (22), and the supporting table (24) for supporting the blank is connected in the accommodating groove (22) through a supporting spring (23).

3. The outdoor charging pile sheet metal stamping die according to claim 2, characterized in that, The bottom of the upper mold plate (2) is slidably connected with a plurality of connecting shafts (25) outside the connecting table (41), the top of the connecting shaft (25) penetrates the upper mold plate (2) and is fixedly connected with an anti-dropping block (26), the bottom of the connecting shaft (25) is fixedly connected with a pressing ring (27), and the bottom of the pressing ring (27) is processed with an inclined surface three (28) for positioning the blank.

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