A stamping die

Abstract

The present invention relates to the field of mold technology, and specifically to a stamping mold. The stamping mold includes: an upper mold group and a lower mold group; a stripping plate; and a floating mechanism suitable for applying an upward lifting force to a plate. In the stamping mold provided by the present invention, in the closed mold state, at least a portion of the lower surface of the stripping plate maintains a first clearance M with the upper surface of the lower mold group, and the clearance M satisfies M>L; ​​wherein L is the thickness of the plate, thereby preventing material chips from causing crushing and scratching the plate in the mold; in the open mold state, the floating mechanism is suitable for lifting the plate to a preset height, and maintaining a second clearance P between the plate and the upper surface of the lower mold group, and maintaining a third clearance Q between the lower surface of the stripping plate and the upper surface of the lower mold group, wherein Q>P+L. This causes the plate to be out of contact with the upper and lower mold groups, and effectively avoids scratches caused by friction with the upper and lower templates when the aluminum plate material is fed forward.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and in particular to a stamping mold. Background Art

[0002] Stamping is a production technology that uses the power of conventional or specialized stamping equipment to subject sheet metal to direct deformation forces within a die, resulting in a product part with a specific shape, size, and performance. Stamping dies are specialized equipment used to process sheet metal into parts during the stamping process and are crucial to the stamping process.

[0003] The material chips generated during the stamping process are easy to adhere to the mold and the plate, which can easily cause damage to the plate when the upper and lower molds are closed; the burrs on the shears that have not fallen off can easily cause scratches on the plate after contacting the upper and lower mold surfaces or floating material inserts during the forward movement of the material strip. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the plate is easily crushed and scratched by material chips during stamping, thereby providing a stamping die that can prevent the material chips from causing crushing and scratching of the plate.

[0005] In order to solve the above technical problems, the present invention provides a stamping die, comprising:

[0006] Upper die set and lower die set;

[0007] a stripping plate movably connected to the lower die assembly, wherein a plate is suitable for being placed between the lower surface of the stripping plate and the upper surface of the lower die assembly;

[0008] a floating material mechanism movably connected to the lower die assembly, the floating material mechanism being adapted to exert an upward lifting force on the plate;

[0009] In the mold-closed state, at least a portion of the lower surface of the stripper plate maintains a first clearance M with the upper surface of the lower mold assembly, and the clearance M satisfies M>L; wherein L is the thickness of the plate;

[0010] In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height and maintaining a second clearance P between the plate and the upper surface of the lower mold group, and a third clearance Q between the lower surface of the stripping plate and the upper surface of the lower mold group, where Q>P+L.

[0011] Optionally, the floating material mechanism includes a floating material block assembly and a floating material needle assembly; the floating material block assembly and the floating material needle assembly are arranged on the lower mold assembly.

[0012] Optionally, the stamping die further includes a pushing mechanism, and the pushing mechanism includes an upper push rod assembly and a lower push rod assembly;

[0013] The upper ejector assembly is provided on the upper die set; during the process of switching the mold from the open state to the closed state, the upper ejector assembly is suitable for pushing the stripping plate toward the upper surface of the lower die set in the mold closing direction;

[0014] The lower ejector assembly is arranged on the lower die set; during the process of switching the mold from the closed state to the open state, the lower ejector assembly is suitable for pushing the stripping plate away from the upper surface of the lower die set along the mold opening direction.

[0015] Optionally, the stamping die further includes a height limiting column, which is arranged between the upper and lower die groups; when the die is in a closed state, the height limiting column is suitable for maintaining the first clearance M between at least a portion of the lower surface of the stripping plate and the upper surface of the lower die group.

[0016] Optionally, the stamping die further includes a hook pin, which is arranged on the lower die assembly; when the die is in an open state, the hook pin is suitable for limiting the plate to a preset height and maintaining the second clearance P between the plate and the upper surface of the lower die assembly.

[0017] Optionally, the stamping die further includes a material belt, which is suitable for driving the plate to move along the discharge direction; when the mold switches from a closed state to an open state, the floating mechanism supports the material belt upward so that it is out of contact with the upper surface of the lower die group.

[0018] Optionally, the stamping die further includes a pressure plate roller assembly, which is arranged at the discharge end of the die and is suitable for clamping the plate on the material strip and pushing it to the external structure.

[0019] Optionally, the pressure plate roller assembly includes an upper pressure plate roller and a corresponding lower pressure plate roller; the upper pressure plate roller is arranged on the stripping plate; and the lower pressure plate roller is arranged on the lower die set.

[0020] Optionally, a bearing is provided on the floating block assembly.

[0021] Optionally, the stamping die further includes:

[0022] A punch is provided on the upper die assembly; a chamfer is provided on the cutting edge of the punch; an air inlet and a transverse air channel are provided on the cutting edge of the punch; a smooth arc transition is provided on the punch at a preset distance A from the cutting edge surface;

[0023] The insert is arranged in the lower die assembly; the cutting edge is matched with the punching clearance of the insert.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The stamping die provided by the present invention is provided with a floating mechanism. When the die is closed, at least a portion of the lower surface of the stripper plate maintains a first clearance M with the upper surface of the lower die assembly, where M>L; where L is the thickness of the plate. This allows the plate to be separated from the lower die assembly, thereby preventing residual material chips in the die from imprinting the plate.

[0026] In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height, and maintaining a second clearance P between the plate and the upper surface of the lower mold group, and maintaining a third clearance Q between the lower surface of the stripping plate and the upper surface of the lower mold group, wherein Q>P+L; so that the plate is out of contact with both the upper and lower mold groups, thereby avoiding scratches caused by friction between the plate and the upper and lower mold groups when feeding forward in the next stroke.

[0027] 2. The stamping die provided by the present invention is provided with a push mechanism. When the die is in the closed state, the upper push rod assembly presses down the stripper plate so that at least a portion of the lower surface of the stripper plate maintains a first clearance M with the upper surface of the lower die assembly, thereby separating the sheet material from the lower die assembly and preventing residual material chips in the die from causing damage to the sheet material.

[0028] When the mold is in the open state, the upper ejector assembly is in a separated state from the upper surface of the stripping plate. At this time, the lower ejector assembly pushes the stripping plate so that the lower surface of the stripping plate and the upper surface of the lower mold assembly maintain a third clearance Q, thereby preventing the stripping plate and the lower mold assembly from scratching the plate.

[0029] 3. The stamping die provided by the present invention is provided with a height-limiting column. When the die is in a closed state, the height-limiting column is suitable for maintaining a first clearance M between at least a portion of the lower surface of the stripping plate and the upper surface of the lower die assembly. The gap M satisfies M>L, where L is the thickness of the plate. This can effectively prevent residual material chips from crushing the plate in the die. At the same time, the height-limiting column can also form a support platform to prevent the die from being deformed due to excessive force.

[0030] 4. The stamping die provided by the present invention is provided with a hook pin. During the process of switching the die from a closed state to an open state, the floating mechanism pushes the material belt to make the plate move upward; when the plate moves upward to a preset height, the hook pin is suitable for limiting the plate at the preset height and maintaining the second clearance P between the plate and the upper surface of the lower die group to avoid scratches on the plate by the chips in the lower die group and the die.

[0031] 5. The stamping die provided by the present invention is provided with a pressure plate roller assembly. When cutting and discharging, the upper die group moves to the upper dead center, the stripping plate floats to the third clearance gap Q and then stops. The material strip is lifted by the floating mechanism and is in a suspended position and is out of contact with the upper die group and the lower die group. The upper pressure plate roller installed on the stripping plate is driven by the elastic force of the fifth spring to press the material strip downward, and together with the corresponding lower pressure plate roller, clamps the cut sheet material to a stable height.

[0032] The upper die set starts to move downward after reaching the top dead center. When it reaches the feeding position, the feeder drives the material belt to push the cut sheet material onto the conveyor belt through the upper and lower pressure plate rollers. By arranging pressure plate roller assemblies on the upper and lower sides of the material belt, the problem of sheet material discharge is solved and scratches caused by contact between the sheet material and mold parts are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 Schematic diagram of the closed mold structure of the stamping mold of the present invention;

[0035] Figure 2 Schematic diagram of the die opening structure of the stamping die of the present invention;

[0036] Figure 3 This is a sheet material discharge diagram of the stamping die of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the punch and insert of the stamping die of the present invention;

[0038] Figure 5 Schematic diagram of the structure of the upper and lower die cutting edges of the stamping die of the present invention;

[0039] Figure 6 Schematic diagram of the plate structure.

[0040] Description of reference numerals:

[0041] 101, upper template; 102, upper clamping plate; 103, upper pad; 104, upper die base; 201, lower template; 202, lower pad; 2021, height limit column; 203, lower die base; 3, stripping plate; 41, floating block assembly; 411, floating block; 412, first spring; 413, first plug screw; 4101, bearing; 42, floating needle assembly; 421, floating pin; 422, second spring; 42 3. Second plug screw; 51. Upper ejector rod assembly; 511. Upper driving rod; 512. Third spring; 513. Third plug screw; 52. Lower ejector rod assembly; 521. Lower driving rod; 522. Fourth spring; 523. Fourth plug screw; 6. Hook pin; 71. Material strip; 721. Upper pressure plate roller; 722. Lower pressure plate roller; 81. Punch; 8101. Cutting edge; 82. Insert; 8201. Punching; 9. Conveyor belt. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] The stamping die provided in this embodiment includes:

[0047] Upper die set and lower die set;

[0048] The stripping plate 3 is movably connected to the lower die assembly, and the lower surface of the stripping plate 3 and the upper surface of the lower die assembly are suitable for placing the plate;

[0049] a floating material mechanism movably connected to the lower die assembly, the floating material mechanism being adapted to exert an upward lifting force on the plate;

[0050] In the mold-closed state, at least a portion of the lower surface of the stripper plate 3 maintains a first clearance M with the upper surface of the lower mold assembly, and the clearance M satisfies M>L; wherein L is the thickness of the plate;

[0051] In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height and maintaining a second clearance P between the plate and the upper surface of the lower mold group, and a third clearance Q between the lower surface of the stripping plate 3 and the upper surface of the lower mold group, where Q>P+L.

[0052] It should be noted that, in the mold-closed state, at least part of the lower surface of the stripping plate 3 maintains a first clearance M with the upper surface of the lower mold assembly, and the other areas are in contact with the plate. Figure 6 The two ends of the stripping plate 3 are in a fitting relationship with the plate to press the plate downward, and the stripping plate 3 is spaced apart from the plate in the middle area along the length direction of the plate, so as to facilitate the formation of a gap and prevent the residual material chips in the mold from imprinting the plate.

[0053] Combine Figure 1 、 Figure 2 As shown, in this embodiment, the upper die set includes an upper die plate 101, an upper clamping plate 102, an upper pad 103 and an upper die base 104; the upper die plate 101 is arranged at the bottom of the upper die set and is suitable for fixing the punch; the upper clamping plate 102 is suitable for fixing the upper die plate 101 and clamping and positioning the punch; the upper pad 103 is arranged between the upper clamping plate 102 and the upper die base 104, and is suitable for fixing the punch and bearing the force of the punch to prevent the upper die base 104 from being pressed into a pit; the upper die base 104 is suitable for bearing the punching force and for installing the die core and the outer guide sleeve (column);

[0054] The lower die assembly includes a lower die plate 201, a lower pad 202 and a lower die base 203; the lower die plate 201 is suitable for fixing the lower die insert; the lower pad 202 is arranged between the lower die plate 201 and the lower die base 203, and is suitable for bearing the punching pressure and bearing and fixing the lower die insert; the lower die base 203 is suitable for bearing the punching pressure and for the installation of the outer guide column (sleeve).

[0055] Optionally, the stripping plate 3 is movably connected to the lower mold assembly, and a plate is suitable for being placed between the lower surface of the stripping plate 3 and the upper surface of the lower mold plate 201 .

[0056] In the mold-closed state, a first clearance M is maintained between at least a portion of the lower surface of the stripper plate 3 and the upper surface of the lower mold plate 201, where the clearance M satisfies M>L, where L is the thickness of the plate, so that the plate is out of contact with the lower mold plate 201, thereby preventing residual material chips in the mold from imprinting the plate.

[0057] In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height, and maintaining a second clearance P between the plate and the upper surface of the lower template 201, and maintaining a third clearance Q between the lower surface of the stripping plate 3 and the upper surface of the lower template 201, wherein Q>P+L; so that the plate is out of contact with both the upper template 101 and the lower template 201, thereby effectively avoiding scratches caused by friction between the plate and the upper template 101 and the lower template 201 when feeding forward in the next stroke.

[0058] Optionally, when the thickness of the plate is L=0.6 mm, in the mold closed state, at least a portion of the lower surface of the stripper plate 3 maintains a first clearance M=0.7 mm with the upper surface of the lower mold plate 201, and the clearance M satisfies M>L;

[0059] In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height, and maintaining a second clearance P = 5.0 mm between the plate and the upper surface of the lower template 201, and a third clearance Q = 11.2 mm between the lower surface of the stripping plate 3 and the upper surface of the lower template 201, where Q > P + L.

[0060] Optionally, since the stripping plate 3 is arranged on the lower die group, the upper die punch detaches from the stripping plate 3 after moving upward with the upper die group, which is convenient for regularly adding lubricating oil during production to prevent the generation of material chips during punching and cutting; at the same time, the material chips adhering to the punch are cleaned in time.

[0061] Specifically, the floating mechanism includes a floating block assembly 41 and a floating needle assembly 42 ; the floating block assembly 41 and the floating needle assembly 42 are arranged on the lower die assembly.

[0062] Optionally, the floating block assembly 41 includes a floating block 411, a first spring 412 and a first plug screw 413; the upper end of the floating block 411 abuts against the material strip, and the lower end is located in a preset hole of the lower mold assembly and supported by the first spring 412; the other end of the first spring 412 is provided with a corresponding first plug screw 413; the first plug screw 413 is suitable for allowing the first spring 412 to be compressed when subjected to force, and the first plug screw 413 is used to adjust the pre-pressure of the first spring 412.

[0063] Optionally, the floating needle assembly 42 includes a floating pin 421, a second spring 422 and a second plug screw 423; the upper end of the floating pin 421 abuts against the material strip, and the lower end is located in the preset hole of the lower mold group and supported by the second spring 422; the other end of the second spring 422 is provided with a corresponding second plug screw 423; the second plug screw 423 is suitable for allowing the second spring 422 to be compressed when subjected to force, and the second plug screw 423 is used to adjust the pre-pressure of the second spring 422.

[0064] Specifically, the stamping die further includes a pushing mechanism, which includes an upper push rod assembly 51 and a lower push rod assembly 52;

[0065] The upper ejector assembly 51 is provided on the upper die set; during the process of switching the mold from the open state to the closed state, the upper ejector assembly 51 is adapted to push the stripping plate 3 toward the upper surface of the lower die set in the mold closing direction;

[0066] The lower ejector assembly 52 is provided on the lower die set; during the process of switching the mold from the closed state to the open state, the lower ejector assembly 52 is suitable for pushing the stripping plate 3 away from the upper surface of the lower die set along the mold opening direction.

[0067] Optionally, the upper push rod assembly 51 includes an upper hitting rod 511, a third spring 512 and a third screw plug 513; during the process of switching the mold from an open mold state to a closed mold state, the lower end of the upper hitting rod 511 is suitable for pushing the stripping plate 3 along the closing mold direction close to the upper surface of the lower mold group; the upper end of the upper hitting rod 511 is located in the preset hole of the upper mold group and is supported by the third spring 512; the other end of the third spring 512 is provided with a corresponding third screw plug 513; the third screw plug 513 is suitable for allowing the third spring 512 to be compressed when subjected to force, and the third screw plug 513 is used to adjust the pre-pressure of the third spring 512.

[0068] Optionally, the lower push rod assembly 52 includes a lower driving rod 521, a fourth spring 522 and a fourth screw plug 523; during the process of switching the mold from a closed state to an open state, the upper end of the lower driving rod 521 is suitable for pushing the stripping plate 3 away from the upper surface of the lower mold group along the mold opening direction; the lower end of the lower driving rod 521 is located in the preset hole of the lower mold group and is supported by the fourth spring 522; the other end of the fourth spring 522 is provided with a corresponding fourth screw plug 523; the fourth screw plug 523 is suitable for allowing the fourth spring 522 to be compressed when subjected to force, and the fourth screw plug 523 is used to adjust the pre-pressure of the fourth spring 522.

[0069] Optionally, when the mold is in a closed state, the spring force of the upper driving rod 511 is greater than the spring force of the lower driving rod 521, and the upper driving rod 511 presses down the stripping plate 3 so that at least a portion of the lower surface of the stripping plate 3 maintains a first clearance M with the upper surface of the lower die assembly, so that the plate is out of contact with the lower die assembly, thereby preventing residual chips in the mold from causing damage to the plate;

[0070] When the mold is in the open state, the upper hitting rod 511 is separated from the upper surface of the stripping plate 3. At this time, the lower hitting rod 521 pushes the stripping plate 3 so that the lower surface of the stripping plate 3 and the upper surface of the lower mold group maintain a third clearance Q, thereby preventing the lower mold group from scratching the plate.

[0071] Specifically, the stamping die also includes a height limiting column 2021, which is arranged between the upper and lower die groups; when the die is in a closed state, the height limiting column 2021 is suitable for maintaining the first clearance M between the lower surface of the stripping plate 3 and the upper surface of the lower die group.

[0072] In this embodiment, the height limiting column 2021 is arranged on the lower mold group and is suitable for controlling the mold closing position; when the mold is in the closed state, the height limiting column 2021 is suitable for maintaining the first clearance M between at least a part of the lower surface of the stripping plate 3 and the upper surface of the lower mold group, and the gap M satisfies M>L; ​​wherein L is the thickness of the plate, which can effectively prevent residual material chips from crushing the plate in the mold; at the same time, the height limiting column 2021 can also form a support platform to prevent the mold from being deformed due to excessive force.

[0073] As a variation, it can also be set as a first height limiting column and a second height limiting column, the upper end of the first height limiting column is set on the upper mold group, and the lower end of the second height limiting column is set on the lower mold group. When the mold is in a closed mold state, the lower end of the first height limiting column and the upper end of the second height limiting column are abutted against each other to maintain the first clearance M between the lower surface of the stripping plate 3 and the upper surface of the lower mold group; at the same time, a support platform is formed to protect the mold and internal inserts.

[0074] Specifically, the stamping die also includes a hook pin 6, which is arranged on the lower die group; when the die is in the open state, the hook pin 6 is suitable for limiting the plate to a preset height and maintaining the second clearance P between the plate and the upper surface of the lower die group.

[0075] Optionally, the hook pin 6 is arranged on the lower mold group; when the mold is switched from a closed state to an open state, the floating material mechanism pushes the material belt to make the plate move upward; when the plate moves upward to a preset height, the hook pin 6 is suitable for limiting the plate to the preset height, and making the plate and the upper surface of the lower mold group maintain the second clearance P to avoid scratches on the plate by the lower mold group and the material chips in the mold.

[0076] Specifically, the stamping die also includes a material belt 71, which is suitable for driving the plate to move along the discharge direction; when the mold switches from a closed state to an open state, the floating mechanism supports the material belt 71 upward to make it out of contact with the upper surface of the lower die assembly.

[0077] Combine Figure 3 As shown, the material belt 71 is arranged between the upper and lower mold groups, and is suitable for supporting the plate to move along the discharge direction; when the mold switches from the closed state to the open state, the spring of the floating mechanism stretches and supports the material belt 71 upward to make it out of contact with the upper surface of the lower mold group.

[0078] Specifically, the stamping die further includes a pressure plate roller assembly, which is disposed at the discharge end of the die and is suitable for clamping the plate on the material belt 71 and pushing it to the external structure.

[0079] Specifically, the pressure plate roller assembly includes an upper pressure plate roller 721 and a corresponding lower pressure plate roller 722 ; the upper pressure plate roller 721 is arranged on the stripping plate 3 ; the lower pressure plate roller 722 is arranged on the lower die set.

[0080] Combine Figure 1 、 Figure 2 、 Figure 3 As shown, in this embodiment, the pressure plate roller assembly includes an upper pressure plate roller 721 and a corresponding lower pressure plate roller 722; the upper pressure plate roller 721 is arranged on the stripping plate 3, and the upper pressure plate roller 721 is elastically connected to the stripping plate 3; the lower pressure plate roller 722 is arranged on the lower mold group, and the lower pressure plate roller 722 is elastically connected to the lower mold group.

[0081] Optionally, the upper pressure plate roller 721 is elastically connected to the stripping plate 3 via a fifth spring (not shown in the figure); the lower pressure plate roller 722 is elastically connected to the lower die assembly via the first spring 412 .

[0082] When cutting and discharging, the upper die set moves to the upper dead center, the stripping plate 3 floats up to the third clearance Q and then stops, the material strip 71 is lifted by the floating mechanism and is in a suspended position and is out of contact with the upper template 101 and the lower template 201, the upper pressure plate roller 721 installed on the stripping plate 3 is driven by the elastic force of the fifth spring to press the material strip 71 downward, and together with the corresponding lower pressure plate roller 722, clamps the cut sheet to a stable height;

[0083] After reaching the top dead center, the upper die starts to move downward. When it reaches the feeding position, the feeder drives the material belt 71 to push the cut sheet material onto the conveyor belt 9 through the upper pressure plate roller 721 and the lower pressure plate roller 722. By arranging the pressure plate roller assemblies on the upper and lower sides of the material belt 71, the problem of sheet material discharge is solved and scratches caused by contact between the sheet material and the mold parts are avoided.

[0084] Specifically, a bearing 4101 is provided on the floating block assembly 41 .

[0085] Optionally, a bearing 4101 is provided on the floating block 411 of the floating block assembly 41; the pushing end of the floating pin 421 of the floating needle assembly 42 is set to a round head shape, which effectively reduces the friction when in contact with the plate and avoids scratching of the plate when feeding forward.

[0086] Optionally, the bearing 4101 may be selected from, but is not limited to, a resin bearing.

[0087] Specifically, the stamping die further includes:

[0088] Punch 81, the punch 81 is set in the upper die set; the cutting edge of the punch 81 is provided with a rounded corner; the cutting edge of the punch 81 is provided with an air inlet and a transverse air channel; a smooth arc transition is provided on the punch 81 at a preset distance A from the cutting edge surface;

[0089] The insert 82 is arranged on the lower die assembly; the cutting edge is matched with the punching clearance of the insert 82.

[0090] Combine Figure 4 、 Figure 5As shown, in this embodiment, the punch 81 is arranged on the upper mold group, and the insert 82 is arranged on the lower mold group; the cutting edge 8101 of the punch 81 is provided with a chamfer R; the cutting edge 8101 of the punch 81 is provided with an air inlet and a transverse air duct; a smooth arc transition is provided on the punch 81 at a preset distance A from the cutting edge surface; the cutting edge 8101 is clearance-matched with the punching hole 8201 of the insert 82 to prevent the punch 81 from rubbing back and forth with the hole wall of the punching hole 8201 when punching through the plate and pulling back to generate material chips and adhering to the cutting edge.

[0091] Optionally, the punch 81 is made of cemented carbide (SANDVIK H10F) + BALINIT TRITONSTAR coating.

[0092] Optionally, the cutting edge 8101 of the punch 81 is polished and rounded by 0.05 mm.

[0093] Optionally, a smooth arc transition is provided on the punch 81 at a preset distance of 0.5 mm from the cutting edge surface.

[0094] Optionally, an air inlet and a transverse air duct are provided at the cutting edge 8101 of the punch 81 to blow out waste materials to prevent chips from jumping and sticking to the mold.

[0095] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A stamping die, characterized in that: include: Upper die set and lower die set; A stripping plate (3) is movably connected to the lower die set, and a plate is suitable for being placed between the lower surface of the stripping plate (3) and the upper surface of the lower die set; a floating material mechanism movably connected to the lower die assembly, the floating material mechanism being adapted to exert an upward lifting force on the plate; In the mold-closed state, at least a portion of the lower surface of the stripping plate (3) maintains a first clearance gap M with the upper surface of the lower mold assembly, and the gap M satisfies M>L; wherein L is the thickness of the plate; In the mold opening state, the floating mechanism is suitable for lifting the plate to a preset height and maintaining a second clearance gap P between the plate and the upper surface of the lower mold assembly, and maintaining a third clearance gap Q between the lower surface of the stripping plate (3) and the upper surface of the lower mold assembly, wherein Q>P+L; It also includes a hook pin (6), which is arranged on the lower die assembly; When the mold is in the mold opening state, the hook pin (6) is suitable for limiting the plate to a preset height and maintaining the second clearance P between the plate and the upper surface of the lower mold assembly; It also includes a pressure plate roller assembly (72), which is arranged at the discharge end of the mold and is suitable for clamping the plate and pushing it to the external structure; the pressure plate roller assembly (72) includes an upper pressure plate roller (721) and a corresponding lower pressure plate roller (722); the upper pressure plate roller (721) is arranged on the stripping plate (3); and the lower pressure plate roller (722) is arranged on the lower mold assembly.

2. The stamping die according to claim 1, characterized in that: The floating material mechanism comprises a floating material block assembly (41) and a floating material needle assembly (42); the floating material block assembly (41) and the floating material needle assembly (42) are arranged on the lower die assembly.

3. The stamping die according to claim 1, characterized in that It also includes a pushing mechanism, which includes an upper push rod assembly (51) and a lower push rod assembly (52); The upper ejector rod assembly (51) is arranged on the upper die assembly; During the process of switching the mold from the open mold state to the closed mold state, the upper ejector assembly (51) is suitable for pushing the stripping plate (3) toward the upper surface of the lower mold assembly along the mold closing direction; The lower ejector assembly (52) is arranged on the lower die set; during the process of switching the die from the closed state to the open state, the lower ejector assembly (52) is suitable for pushing the stripping plate (3) away from the upper surface of the lower die set along the die opening direction.

4. The stamping die according to claim 1, wherein: It also includes a height-limiting column (2021), which is arranged between the upper and lower modules.

5. The stamping die according to claim 2, characterized in that: When the mold switches from a closed state to an open state, the floating mechanism supports the plate upwards to separate it from the upper surface of the lower mold assembly.

6. The stamping die according to claim 2, characterized in that: A bearing (4101) is provided on the floating material block assembly (41).

7. The stamping die according to claim 1, characterized in that: Also includes: A punch (81), the punch (81) is arranged on the upper die set; a rounded corner is arranged at the cutting edge of the punch (81); an air inlet and a transverse air channel are opened at the cutting edge of the punch (81); a smooth arc transition is arranged at a preset distance A from the cutting edge surface on the punch (81); An insert (82) is provided in the lower die assembly; the cutting edge is fitted with a punching clearance of the insert (82).

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