CN114273505A - a stamping die - Google Patents

Abstract

The invention relates to the technical field of molds, in particular to a stamping mold. The stamping die includes: an upper die set and a lower die set; a stripping plate; a floating material mechanism, which is suitable for applying an upward lifting force to the plate; the stamping die provided by the present invention, in a closed die state, the stripping plate At least a partial area of the lower surface of the lower die and the upper surface of the lower die set maintain a first vacant gap M, and the gap M satisfies M>L; wherein, L is the thickness of the plate, thereby preventing the chips from pressing the plate in the die. scratches; in the mold opening state, the floating material mechanism is suitable for lifting the sheet to a preset height, and keeps the sheet and the upper surface of the lower die set a second clearance gap P, and The lower surface of the stripper plate and the upper surface of the lower die set maintain a third clearance gap Q, wherein Q>P+L. As a result, the plate is out of contact with the upper and lower die sets, and the aluminum plate material effectively avoids scratches caused by friction with the upper and lower die plates when the material is fed forward.

Description

a stamping die

technical field

The invention relates to the technical field of molds, in particular to a stamping mold.

Background technique

Stamping is the production technology of product parts with a certain shape, size and performance by means of the power of conventional or special stamping equipment, so that the plate is directly subjected to deformation force in the mold and deformed. Stamping die is a special process equipment for processing sheet metal into parts in stamping process, which is very important for stamping process.

The scraps generated during the stamping process are easy to adhere to the die and the plate, and it is easy to cause pressure damage to the plate when the upper and lower dies are clamped; the burrs that are not dropped on the notch will contact the upper and lower die surfaces or floating materials during the advancement of the material belt. It is easy to scratch the board after the inserts are in contact.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the sheet is easily crushed and scratched by the scraps during stamping, thereby providing a stamping die that can avoid the scraps causing the sheet to be crushed and scratched.

For solving the above-mentioned technical problems, the stamping die provided by the present invention includes:

Upper module and lower module;

a stripping plate, which is movably connected with the lower module, and a plate is suitable for placing a plate between the lower surface of the stripping plate and the upper surface of the lower module;

a floating material mechanism, which is movably connected with the lower module, and the floating material mechanism is suitable for exerting an upward lifting force on the plate;

In the closed mold state, at least a partial area of the lower surface of the stripping plate and the upper surface of the lower die set maintain a first clearance gap M, and the gap M satisfies M>L; wherein, L is the thickness of the plate;

In the mold-opening state, the floating mechanism is adapted to lift the sheet to a preset height, and keep the sheet and the upper surface of the lower die set a second clearance P, and the stripping The lower surface of the plate and the upper surface of the lower die set maintain a third clearance gap Q, where Q>P+L.

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 in the lower module.

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

The upper ejector assembly is arranged on the upper die set; in the process of switching the mold from the mold-opening state to the closed-die state, the upper ejector assembly is suitable for pushing the stripping plate close to the lower die set along the mold-closing direction. upper surface;

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

Optionally, the stamping die further includes a height-limiting column, and the height-limiting column is arranged between the upper and lower die sets; when the die is in a closed state, the height-limiting column is suitable for making the lower surface of the stripping plate have a lower surface. The first clearance gap M is maintained between at least a part of the area and the upper surface of the lower die set.

Optionally, the stamping die further includes a hook pin, and the hook pin is arranged on the lower module; when the mold is in the mold-opening state, the hook pin is suitable for restricting the plate to a preset height, The second clearance gap P is maintained between the plate and the upper surface of the lower die set.

Optionally, the stamping die further includes a material belt, and the material belt is suitable for driving the plate to move in the discharging direction; when the mold is switched from a closed mold state to an open mold state, the floating material mechanism supports the The strips keep it out of contact with the upper surface of the lower die.

Optionally, the stamping die further includes a platen roller assembly, the platen roller assembly is disposed at the discharge end of the die, and is suitable for clamping the plate on the material belt and pushing it to the external structure.

Optionally, the platen roller assembly includes an upper platen roller and a corresponding lower platen roller; the upper platen roller is arranged on the stripping plate; the lower platen roller is arranged on the lower module.

Optionally, a bearing is provided on the float block assembly.

Optionally, the stamping die also includes:

Punch, the punch is arranged on the upper module; the cutting edge of the punch is provided with a rounded corner; the cutting edge of the punch is provided with an air inlet and a transverse air passage; the upper distance of the punch is A smooth arc transition is set at the preset distance A of the cutting edge surface;

The insert is arranged on the lower die set; the cutting edge is in clearance fit with the punching hole of the insert.

The technical scheme of the present invention has the following advantages:

1. The stamping die provided by the present invention, by setting the floating material mechanism, in the closed die state, at least part of the area of the lower surface of the stripping plate and the upper surface of the lower die set maintain a first vacant gap M, The gap M satisfies M>L; wherein, L is the thickness of the plate; so that the plate is out of contact with the lower die set, so as to prevent the residual chips in the die from imprinting the plate;

In the mold-opening state, the floating mechanism is adapted to lift the sheet to a preset height, and keep the sheet and the upper surface of the lower die set a second clearance P, and the stripping The lower surface of the plate and the upper surface of the lower die set maintain a third clearance gap Q, where Q>P+L; so that the board and the upper and lower die sets are out of contact, so that when the feeding advances in the next stroke , to avoid scratches caused by friction between the plate and the upper and lower modules.

2. In the stamping die provided by the present invention, by setting a pushing mechanism, when the die is in a closed state, the upper ejector pin presses the stripping plate so that at least part of the lower surface of the stripping plate The upper surface of the lower die set maintains a first clearance gap M, so that the plate is out of contact with the lower die set, so as to prevent the residual scrap in the die from pressing the plate;

When the mold is in the mold-opening state, the upper ejector pin assembly and the upper surface of the stripping plate are in a separated state. At this time, the lower ejector pin assembly pushes the stripping plate so that the lower part of the stripping plate is pushed up. The surface and the upper surface of the lower die set maintain a third clearance gap Q, so as to avoid scratches on the board by the stripping plate and the lower die set.

3. In the stamping die provided by the present invention, by setting a height-limiting column, when the die is in a closed state, the height-limiting column is suitable for making at least a partial area of the lower surface of the stripping plate and the upper surface of the lower die set. Keep the first clearance M, and the clearance M satisfies M>L, where L is the thickness of the plate, which can effectively prevent the residual chips from pressing the plate in the mold; at the same time, the height-limiting column can also form a support platform, Prevent the mold from being deformed by excessive force.

4. In the stamping die provided by the present invention, by setting the hook pin, in the process of switching the die from the closed die state to the open die state, the floating material mechanism pushes the material belt to make the plate go up; when the plate goes up To a preset height, the hook pin is adapted to limit the board at the preset height, and keep the board and the upper surface of the lower die set the second clearance gap P to avoid The lower die set and the scraps in the die scratch the plate.

5. In the stamping die provided by the present invention, by setting the platen roller assembly, when cutting and discharging the material, the upper die set moves to the upper dead center, and the stripping plate floats to the third clearance gap Q and stops, so the The material belt is held up by the floating material mechanism in a suspended position and is out of contact with the upper die set and the lower die set. The top force drives and presses down the material belt, and together with the corresponding lower pressing plate rollers clamps the cut plate to keep it at a stable height;

When the upper die set reaches the top dead center, it starts to move downward, and when it reaches the feeding point, the feeder drives the material belt to push the cut sheet through the upper platen roller and the lower platen roller to the conveyor belt; The pressing plate roller assemblies are arranged on the upper and lower sides of the material belt, which not only solves the problem of sheet material discharge, but also avoids scratches caused by the contact between the sheet material and the mold parts.

Description of drawings

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 accompanying drawings required in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the closed-die structure schematic diagram of the stamping die of the present invention;

Fig. 2 is the mold opening structure schematic diagram of the stamping die of the present invention;

Fig. 3 is the sheet discharge drawing of the stamping die of the present invention;

Fig. 4 is the structural representation of the punch and insert of the stamping die of the present invention;

Fig. 5 is the structural representation of the upper and lower die cutting edges of the stamping die of the present invention;

Figure 6 is a schematic diagram of the structure of the plate.

Description of reference numbers:

101, upper formwork; 102, upper splint; 103, upper backing plate; 104, upper die base; 201, lower formwork; 202, lower backing plate; 2021, height limit column; 203, lower die base; 3, stripping plate 41, float block assembly; 411, float block; 412, first spring; 413, first screw plug; 4101, bearing; 42, float needle assembly; 421, float pin; 422, second spring; 423, the second screw plug; 51, the upper ejector rod assembly; 511, the upper rod; 512, the third spring; 513, the third screw plug; 52, the lower ejector rod assembly; 521, the lower ejector rod; 522, the fourth Spring; 523, fourth screw plug; 6, hook pin; 71, material belt; 721, upper platen roller; 722, lower platen roller; 81, punch; 8101, cutting edge; 82, insert; 8201, punch Holes; 9. Conveyor belts.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed in a specific orientation. and operation, 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 to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

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.

The stamping die provided by this embodiment includes:

Upper module and lower module;

The stripping plate 3 is movably connected with the lower module, and a plate is suitable for placing between the lower surface of the stripping plate 3 and the upper surface of the lower module;

a floating material mechanism, which is movably connected with the lower module, and the floating material mechanism is suitable for exerting an upward lifting force on the plate;

In the closed mold state, at least a partial area of the lower surface of the stripping plate 3 and the upper surface of the lower die set maintain a first clearance gap M, and the gap M satisfies M>L; wherein, L is the thickness of the plate ;

In the mold-opening state, the floating mechanism is adapted to lift the sheet to a preset height, and keep the sheet and the upper surface of the lower die set a second clearance P, and the stripping The lower surface of the plate 3 and the upper surface of the lower die set maintain a third clearance gap Q, wherein Q>P+L.

It should be noted that, in the closed mold state, at least part of the lower surface of the stripping plate 3 maintains the first clearance gap M with the upper surface of the lower die set, and other regions are attached to the plate. In this embodiment, the two ends of the stripping plate 3 along the length direction of the plate (as shown in FIG. 6 ) form a bonding relationship with the plate, so as to press down the plate, and the stripping plate 3 The middle area along the length direction of the plate is spaced apart from the plate, so as to facilitate the formation of a gap and prevent the residual chips in the mold from imprinting the plate.

1 and 2, in this embodiment, the upper die set includes an upper die plate 101, an upper clamping plate 102, an upper backing plate 103 and an upper die seat 104; the upper die plate 101 is arranged on the upper die set The bottom of the plate is suitable for fixing punches; the upper clamping plate 102 is suitable for fixing the upper template 101 and clamping and positioning punches; the upper backing plate 103 is arranged between the upper clamping plate 102 and the upper die base 104 , suitable for fixing the punch and bearing the force of the punch, preventing the upper die seat 104 from being pressed out of the pit; the upper die seat 104 is suitable for bearing the punching force and for the die core and the outer guide sleeve (column) installation;

The lower die set includes a lower die plate 201, a lower backing plate 202 and a lower die seat 203; the lower die plate 201 is suitable for fixing lower die inserts; the lower backing plate 202 is arranged on the lower die plate 201 and the lower die seat Between 203, it is suitable for bearing the punching force and for bearing and fixing the lower die insert; the lower die seat 203 is suitable for bearing the punching force and for the installation of the outer guide column (sleeve).

Optionally, the stripping plate 3 is movably connected to the lower module, and a plate is suitable for placing between the lower surface of the stripping plate 3 and the upper surface of the lower template 201 .

In the closed mold state, at least a partial area of the lower surface of the stripper plate 3 and the upper surface of the lower template 201 maintain a first clearance gap M, and the gap M satisfies M>L, where L is the thickness of the plate ; To make the plate out of contact with the lower template 201, thereby preventing the residual material in the mold from imprinting the plate;

In the mold-opening state, the floating material mechanism is adapted to lift the plate to a preset height, and keep the plate and the upper surface of the lower template 201 at a second clearance gap P, and the stripping The lower surface of the plate 3 and the upper surface of the lower template 201 maintain a third clearance gap Q, where Q>P+L; so that the plate is out of contact with the upper template 101 and the lower template 201, Therefore, when the material is fed forward in the next stroke, scratches caused by friction between the plate and the upper template 101 and the lower template 201 are effectively avoided.

Optionally, when the thickness of the plate is L=0.6 mm, in the closed mold state, at least part of the lower surface of the stripping plate 3 and the upper surface of the lower template 201 maintain a first clearance gap M= 0.7mm, the gap M satisfies M>L;

In the mold-opening state, the floating material mechanism is adapted to lift the board to a preset height, and keep the board and the upper surface of the lower template 201 a second clearance gap P=5.0mm, and all the The lower surface of the stripping plate 3 and the upper surface of the lower template 201 maintain a third clearance gap Q=11.2 mm, where Q>P+L.

Optionally, since the stripping plate 3 is arranged in the lower die set, the upper die punch moves upward with the upper die set and then separates from the stripping plate 3, which is convenient for regularly adding lubricating oil during production to prevent the occurrence of punching during punching. At the same time, clean up the scraps adhering to the punch in time.

Specifically, the floating material mechanism includes 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 in the lower module.

Optionally, the floating block assembly 41 includes a floating block 411, a first spring 412 and a first screw plug 413; the upper end of the floating block 411 abuts against the material belt, and the lower end is located in the preset hole of the lower module inside and supported by the first spring 412; the other end of the first spring 412 is provided with a corresponding first plug 413; the first plug 413 is suitable for making the first spring 412 in the force The first screw plug 413 is used to adjust the pre-pressure of the first spring 412 .

Optionally, the floating needle assembly 42 includes a lifting pin 421, a second spring 422 and a second screw plug 423; the upper end of the lifting pin 421 abuts against the material tape, and the lower end is located in the preset hole of the lower module and supported by the second spring 422; the other end of the second spring 422 is provided with a corresponding second plug 423; the second plug 423 is suitable for making the second spring 422 in the force The second plug 423 is used to adjust the pre-pressure of the second spring 422 .

Specifically, the stamping die further includes a push mechanism, and the push mechanism includes an upper ejector assembly 51 and a lower ejector assembly 52;

The upper ejector pin assembly 51 is arranged on the upper module; in the process of switching the mold from the mold-opening state to the mold-closing state, the upper ejector pin assembly 51 is suitable for pushing the stripping plate 3 toward the lower part along the mold-closing direction. the upper surface of the module;

The lower ejector pin assembly 52 is arranged in the lower die set; in the process of switching the mold from the closed mold state to the open mold state, the lower ejector pin assembly 52 is suitable for pushing the stripping plate 3 away from the lower part along the mold opening direction. upper surface of the module.

Optionally, the upper ejector rod assembly 51 includes an upper beat rod 511, a third spring 512 and a third screw plug 513; in the process of switching the mold from the mold-open state to the mold-closed state, the lower end of the upper beat rod 511 It is suitable for pushing the stripping plate 3 close to the upper surface of the lower module along the mold closing direction; the upper end of the upper punching rod 511 is located in the preset hole of the upper module and is supported by the third spring 512; The other end of the third spring 512 is provided with a corresponding third plug 513; the third plug 513 is suitable for enabling the third spring 512 to be compressed under force, and the third plug 513 513 is used to adjust the preload of the third spring 512 .

Optionally, the lower ejector rod assembly 52 includes a lower beat rod 521, a fourth spring 522 and a fourth screw plug 523; in the process of switching the mold from the closed mold state to the open mold state, the upper end of the lower beat rod 521 It is suitable for pushing the stripping plate 3 away from the upper surface of the lower module along the mold opening direction; the lower end of the lower rod 521 is located in the preset hole of the lower module 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 enabling the fourth spring 522 to be compressed under force, and the fourth screw plug 523 is used to adjust the preload of the fourth spring 522 .

Optionally, when the mold is in the closed state, the ejection force of the upper beat rod 511 is greater than that of the lower beat rod 521, and the upper beat rod 511 presses down the stripping plate 3 so that the stripping At least part of the area of the lower surface of the material plate 3 and the upper surface of the lower die set maintain a first clearance gap M, so that the board is out of contact with the lower die set, so as to prevent the residual chips in the die The plate is crushed;

When the mold is in the mold-opening state, the upper rod 511 and the upper surface of the stripping plate 3 are in a separated state. At this time, the lower rod 521 pushes the stripping plate 3 to make the stripping plate 3 The lower surface of 3 and the upper surface of the lower die set maintain a third clearance gap Q, so as to prevent the lower die set from scratching the plate.

Specifically, the stamping die further includes a height-limiting column 2021, and the height-limiting column 2021 is disposed between the upper and lower die sets; when the die is in a closed state, the height-limiting column 2021 is suitable for the stripping plate The first clearance gap M is maintained between the lower surface of 3 and the upper surface of the lower die set.

In this embodiment, the height-limiting column 2021 is arranged on the lower die set and is suitable for controlling the clamping position; when the mold is in the closed state, the height-limiting column 2021 is suitable for making the lower surface of the stripping plate 3 The first clearance gap M is maintained between at least part of the area and the upper surface of the lower die set, and the gap M satisfies M>L; wherein, L is the thickness of the plate, which can effectively prevent residual scraps from forming in the mold. The plate is crushed; 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.

As a variant, a first height-limiting column and a second height-limiting column can also be provided, the upper end of the first height-limiting column is arranged on the upper module, and the lower end of the second height-limiting column is arranged on the lower Module, when the mold is in the closed state, the lower end of the first height-limiting column is in contact with the upper end of the second height-limiting column, so that the lower surface of the stripping plate 3 is in contact with the lower mold. The first clearance gap M is maintained between the upper surfaces of the group; at the same time, a support platform is formed to protect the mold and the internal inserts.

Specifically, the stamping die further includes a hook pin 6, and the hook pin 6 is arranged in the lower module; when the mold is in the mold-opening state, the hook pin 6 is suitable for restricting the plate to a preset height, and keep the second clearance gap P between the plate and the upper surface of the lower die set.

Optionally, the hooking pin 6 is arranged on the lower module; in the process of switching the mold from the closed mold state to the open mold state, the floating material mechanism pushes the material belt to make the plate go up; when the plate is Going up to a preset height, the hook pin 6 is adapted to limit the board at the preset height, and keep the board and the upper surface of the lower die set at the second clearance gap P, In order to prevent the lower die set and the scraps in the die from scratching the plate.

Specifically, the stamping die also includes a material belt 71, and the material belt 71 is suitable for driving the plate to move in the discharge direction; when the mold is switched from the closed mold state to the open mold state, the floating material mechanism supports the upper The material strip 71 is removed from contact with the upper surface of the lower die set.

As shown in FIG. 3, the material belt 71 is arranged between the upper and lower modules, and is suitable for supporting the movement of the plate along the discharging direction; when the mold is switched from the closed mold state to the open mold state, the spring of the floating material mechanism Extend, and support the material strip 71 upward to make it out of contact with the upper surface of the lower die set.

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

Specifically, the platen roller assembly includes an upper platen roller 721 and a corresponding lower platen roller 722; the upper platen roller 721 is arranged on the stripping plate 3; the lower platen roller 722 is arranged in the lower module.

1 , 2 and 3 , in this embodiment, the platen roller assembly includes an upper platen roller 721 and a corresponding lower platen roller 722 ; the upper platen roller 721 is disposed on the stripping plate 3 , and the upper platen roller 721 and the stripping plate 3 are elastically connected; the lower platen roller 722 is arranged on the lower module, and the lower platen roller 722 is elastically connected with the lower module.

Optionally, the upper platen roller 721 and the stripping plate 3 are elastically connected by a fifth spring (not shown in the figure); the lower platen roller 722 and the lower module are connected through the The first spring 412 is elastically connected.

When cutting and discharging the material, the upper die set moves to the top dead center, the stripping plate 3 floats up to the third clearance gap Q and stops, and the material belt 71 is held in the air by the floating material mechanism. position and disengage from the upper template 101 and the lower template 201, the upper platen roller 721 installed on the stripping plate 3 is driven by the ejection force of the fifth spring to press down the material belt 71, and together with the corresponding lower platen roller 722 to clamp the cut plate to make it at a stable height;

After the upper die set reaches the top dead center, it starts to move downward. When it reaches the feeding point, the feeder drives the material belt 71 to push the cut plate to the conveyor belt through the upper platen roller 721 and the lower platen roller 722. 9; by arranging the platen roller assemblies on the upper and lower sides of the material belt 71, the problem of discharging the plate is solved, and scratches caused by the contact between the plate and the mold parts are avoided.

Specifically, the float block assembly 41 is provided with a bearing 4101 .

Optionally, the lifting block 411 of the floating material block assembly 41 is provided with a bearing 4101; the pushing end of the lifting pin 421 of the floating material needle assembly 42 is set to a round head shape, which effectively reduces the contact with the plate. The friction force can avoid the scratching phenomenon of the plate when feeding forward.

Optionally, the selection of the bearing 4101 includes, but is not limited to, a resin bearing.

Specifically, the stamping die also includes:

Punch 81, the punch 81 is arranged on the upper module; 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 passage; The punch 81 is provided with a smooth arc transition at the preset distance A from the cutting edge surface;

The insert 82 is arranged on the lower die set; the cutting edge is in clearance fit with the punching hole of the insert 82 .

4 and 5, in this embodiment, the punch 81 is arranged on the upper die set, and the insert 82 is arranged on the lower die set; the cutting edge 8101 of the punch 81 is provided with a rounding Angle R; the cutting edge 8101 of the punch 81 is provided with an air inlet and a transverse air passage; the punch 81 is provided with a smooth arc transition at a preset distance A from the cutting edge surface; the cutting edge 8101 and The punching holes 8201 of the inserts 82 are in clearance fit to prevent the punches 81 from rubbing back and forth with the hole wall of the punching holes 8201 when the punches 81 punch through the plate and pull back and generate chips and stick to the cutting edge.

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

Optionally, the cutting edge 8101 of the punch 81 is polished and rounded to 0.05mm.

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

Optionally, the cutting edge 8101 of the punch 81 is provided with an air passage and a transverse air passage to blow the waste out to prevent chip jumping and mold sticking.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A stamping die, comprising:

an upper module and a lower module;

the stripper plate (3) is movably connected with the lower die set, and a plate is suitable to be placed between the lower surface of the stripper plate (3) and the upper surface of the lower die set;

the floating mechanism is movably connected with the lower module and is suitable for applying an upward jacking force to the plate;

in a mold closing state, a first abdicating gap M is kept between at least part of the lower surface of the stripper plate (3) and the upper surface of the lower die set, and the gap M meets the condition that M is larger than L; wherein L is the thickness of the plate;

under the die sinking state, the float mechanism is suitable for jack-up panel to preset height, and makes panel with the upper surface of lower module keeps second clearance of stepping down P, just the lower surface of stripper plate (3) with the upper surface of lower module keeps third clearance of stepping down Q, wherein Q > P + L.

2. The stamping die of claim 1, wherein the float mechanism includes a float block assembly (41) and a float needle assembly (42); the floating material block assembly (41) and the floating material needle assembly (42) are arranged on the lower die set.

3. The stamping die of claim 1, further comprising an ejector mechanism including an upper ram assembly (51) and a lower ram assembly (52);

the upper ejector rod component (51) is arranged on the upper die set; in the process of switching the mould from the mould opening state to the mould closing state, the upper ejector rod component (51) is suitable for ejecting the stripper plate (3) to be close to the upper surface of the lower mould set along the mould closing direction;

the lower ejector rod assembly (52) is arranged on the lower die set; in the process of switching the mould from the mould closing state to the mould opening state, the lower ejector rod assembly (52) is suitable for pushing the stripper plate (3) to be far away from the upper surface of the lower mould set along the mould opening direction.

4. The stamping die of claim 1, further comprising a height limiting column (2021), wherein the height limiting column (2021) is disposed between the upper die set and the lower die set; when the mould is in a mould closing state, the height limiting column (2021) is suitable for keeping the first abdicating gap M between at least partial area of the lower surface of the stripper plate (3) and the upper surface of the lower mould set.

5. The stamping die according to claim 1, further comprising a hook pin (6), wherein the hook pin (6) is arranged on the lower die set; when the die is in a die opening state, the material hooking pin (6) is suitable for limiting the plate to a preset height, and the plate and the upper surface of the lower die set keep the second abdicating gap P.

6. The stamping die of claim 2, further comprising a strip of material (71), the strip of material (71) adapted to move the sheet material in a discharge direction; when the mould is switched from a mould closing state to a mould opening state, the floating mechanism upwards supports the material belt (71) to be separated from and contacted with the upper surface of the lower mould set.

7. The stamping die of claim 6, further comprising a platen roller assembly (72), the platen roller assembly (72) being disposed at a discharge end of the die and adapted to grip and push the sheet material on the strip of material (71) to an external structure.

8. The press die of claim 7, wherein the platen roller assembly (72) includes an upper platen roller (721) and a corresponding lower platen roller (722); the upper pressure plate roller (721) is arranged on the stripping plate (3); the lower pressing plate roller (722) is arranged on the lower module.

9. Stamping die according to claim 2, wherein a bearing (4101) is provided on the float block assembly (41).

10. The stamping die of claim 1, further comprising:

the punch (81), the punch (81) is arranged on the upper die set; a fillet is arranged at the cutting edge of the punch (81); an air inlet channel and a transverse air channel are formed in the cutting edge of the punch (81); a smooth arc transition is arranged on the punch (81) at a preset distance A from the cutting edge surface;

the insert (82) is arranged on the lower die set; the cutting edge is in clearance fit with the punching hole of the insert (82).

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