CN219703195U - Forming processing die device of feed piece - Google Patents

Abstract

The utility model discloses a forming and processing die device of a feed piece, which comprises a stamping upper die assembly, a stamping lower die assembly positioned right below the stamping upper die assembly, and an inner guide post movably arranged between the stamping upper die assembly and the stamping lower die assembly, wherein the stamping upper die assembly comprises an upper die seat, an upper base plate, an upper clamping plate, a stop plate and an upper stripper plate which are sequentially arranged from top to bottom; the stamping lower die assembly comprises a lower pad foot, a lower die holder, a lower backing plate and a lower die plate which are sequentially arranged from bottom to top. Through mold insert and ram etc. set up on the last take off board and the lower bolster of mould, go up the lower bolster and use the interior guide pillar as the benchmark and punch to guarantee that the tolerance in the punching press processing is within + -0.005 mm, the side cut is for cutting the blanking shaping to the feed piece, reaches the whole technical requirement of feed piece bending process, has still possessed the production of many types of feed piece products simultaneously, and effectual energy and the cost of having practiced thrift has promoted the output and the product qualification rate of product simultaneously.

Description

Forming processing die device of feed piece

Technical Field

The utility model relates to the technical field of processing equipment for carrying out stamping forming processing on a feed sheet, in particular to a forming processing die device for the feed sheet.

Background

At present, the feeding sheet 49 applied to communication equipment, mobile communication base stations, base station antennas and the like needs to be subjected to certain processes such as material cutting, forming, chamfering, punching, surface pressing, bending, stamping and the like; the feeding sheet is formed by punching, trimming, bending and the like by performing corresponding processes on a flat plate, and the product of the feeding sheet after being processed and formed is shown in fig. 24. The traditional feed piece processing mode is that a laser cutting machine is required to be used for cutting, then another set of stamping die is adopted for stamping forming, chamfering processing and the like, and sometimes a third set of bending die is required to be adopted for bending processing; the feeding sheet is processed through 2-3 sets of processing dies, so that the following problems are caused: (1) The processing efficiency is low, the processing speed is low, and the labor intensity is high; (2) The processing precision control is poor due to the fact that each working procedure can not be continuously produced, and the processes of feeding, positioning and the like are carried out again; (3) In the bending process, direct bending and forming are not performed, and the risk of large deviation of the size of a product after bending and forming is caused without re-shaping, re-pressing, bending and the like, so that the reject ratio is too high, and the material loss and the energy loss are increased; (4) Each procedure of the feeding sheet cannot be completed once, different equipment and procedures are required to be separated and carried out independently, one-time completion of the processes of cutting, forming, chamfering and the like of one set of equipment cannot be achieved, and production cost is high.

Therefore, there is a need for a certain improvement in the technology of processing equipment such as punching and bending of the feeding sheet in the prior art.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a forming and processing die device for a feed sheet, which can combine at least two sets of die equipment in the prior art into one to realize one-time completion of processes such as feeding, forming, chamfering, bending and the like of the feed sheet, thereby simplifying production procedures, improving production efficiency, reducing labor intensity, greatly improving product yield and reducing material and energy loss.

The technical scheme adopted for solving the technical problems is as follows: the forming processing die device for the feed piece comprises a stamping upper die assembly, a stamping lower die assembly positioned right below the stamping upper die assembly, and an inner guide post movably arranged between the stamping upper die assembly and the stamping lower die assembly, wherein the stamping upper die assembly comprises an upper die seat, an upper base plate, an upper clamping plate, a stop plate and an upper stripper plate which are sequentially arranged from top to bottom; the stamping lower die assembly comprises a lower pad foot, a lower die holder, a lower base plate and a lower die plate which are sequentially arranged from bottom to top.

The upper clamping plate is provided with an A-shaped punch penetrating through the stop plate and protruding downwards, and the upper clamping plate is also provided with a 45-degree bending punch, a 90-degree bending punch, a negative 45-degree bending forming punch and a negative 45-degree bending shaping punch penetrating through the stop plate and the upper stripper plate and protruding downwards.

The lower die holder is provided with a dual-purpose pin which penetrates through the lower base plate and the lower die plate and protrudes upwards, and the lower die plate is internally provided with a chamfer C-shaped punch; the lower die plate is internally provided with a 45-degree bending insert corresponding to the 45-degree bending punch, a 90-degree bending insert corresponding to the 90-degree bending punch, a lower die sideslip forming insert corresponding to the negative 45-degree bending forming punch and a lower die sideslip forming insert corresponding to the negative 45-degree bending forming punch.

Further, one side of the bottom of the 45-degree bending punch is a first downward inclined surface with a 45-degree notch formed from outside to inside, and the other side of the bottom of the 45-degree bending punch is a plane connected with the bottom of the first downward inclined surface.

Further, a first square groove position which forms a right angle with the side surface is recessed inwards at the position where one side surface of the 90-degree bending punch is connected with the bottom.

Further, a second square groove position which forms a right angle with the side surface is recessed inwards at the position where one side surface of the negative 45-degree bending forming punch is connected with the bottom, and a round angle is arranged between the second square groove position and the side surface and the bottom of the negative 45-degree bending forming punch.

Furthermore, one side of the bottom of the negative 45-degree bending shaping punch is a second downward inclined surface with a 45-degree notch formed from outside to inside, and the other side of the bottom of the negative 45-degree bending shaping punch is a plane connected with the bottom of the second downward inclined surface.

Further, one side of the top of the 45-degree bending insert is a first upward inclined surface which is provided with a 45-degree notch from outside to inside and corresponds to the first downward inclined surface, and the other side of the top of the 45-degree bending insert is a plane connected with the top of the first upward inclined surface.

Further, the 90-degree bending insert is of a square upright post structure, a punching gap is formed between a first square groove position when the 90-degree bending punch is pressed down and one side face of the 90-degree bending insert, and the width of the punching gap is equal to the thickness of the feed piece.

Further, the lower die sideslip forming insert comprises a first square column base and a first forming piece arranged on the first square column base.

The upper part of the first forming piece is a first trapezoid body, the lower part of the first trapezoid body is a first square body, one side of the first trapezoid body is a third downward inclined surface which is provided with a negative 45-degree notch from outside to inside and is inclined downwards, and the bottom of the third downward inclined surface is connected with the top of the first square body; and a gap is formed between the second square groove position and the top of the third downward inclined surface when the negative 45-degree bending forming punch is pressed down, and a fillet of the negative 45-degree bending forming punch presses a punched part of the feed piece, which is punched by 90 degrees, to the third downward inclined surface to form negative 45-degree bending forming.

The first square column base is provided with a first movable locking nut which is movably locked with the lower die holder.

Further, the lower die sideslip shaping insert comprises a second square upright post base, a second shaping piece arranged on the second square upright post base, a shaping base positioned on the right side of the second square upright post base, a shaping push block movably arranged on the shaping base and capable of sliding left and right, a shaping press block connected with the top of the shaping push block, a limiting block positioned on the left side of the shaping base and limiting the shaping push block to slide in place, and a reset spring connected between the shaping push block and the shaping base.

The upper part of the second forming piece is a second trapezoid body, the lower part of the second trapezoid body is a second square body, one side of the second trapezoid body is a fourth downward inclined surface which is provided with a negative 45-degree notch from outside to inside and is inclined downwards, and the bottom of the fourth downward inclined surface is connected with the top of the second square body.

The shaping base is a special-shaped piece, and a mirror image L-shaped notch which forms a mirror image with L is arranged at the top of the shaping base.

The shaping pushing block is characterized in that symmetrical 45-degree notches are respectively formed in two sides of the top of the shaping pushing block, and the 45-degree notch on the right side is arranged corresponding to the second downward inclined surface.

The left side of the shaping pressing block is a fifth downward inclined surface which is arranged corresponding to the fourth downward inclined surface, and the right side of the shaping pressing block is a mirror image L-shaped buckle which is movably installed in a matched mode with the mirror image L-shaped notch.

The limiting block is square and blocky.

The second square upright post base is provided with a second movable locking nut which is movably locked with the lower die holder.

In summary, the forming and processing die device for the feeding sheet can combine at least two sets of die equipment in the prior art into one to realize one-time completion of processes such as feeding, forming, chamfering, bending and the like, thereby simplifying production procedures, improving production efficiency, reducing labor intensity, greatly improving product yield and reducing material and energy consumption. The processing technology of the forming processing die device of the feed piece comprises a punching technology, a trimming technology for the feed piece, a surface pressing technology, a bending stamping forming technology and the like; through each mold insert and punch etc. set up on the upper stripper plate and the lower bolster of mould, go up the lower bolster and regard inner guide pillar as the benchmark and carry out the punching press to guarantee that the tolerance in the punching press processing is within + -0.005 mm, the side cut is for cutting the blanking shaping to the feed piece, reaches the whole technical requirement of feed piece bending process, has still possessed the production of many types of feed piece products simultaneously, the effectual energy and the cost of having practiced thrift, has promoted the output and the product qualification rate of product simultaneously.

Drawings

FIG. 1 is a schematic diagram showing the structure of a feeder sheet molding die apparatus according to example 1 of the present utility model when the die apparatus is closed;

FIG. 2 is a schematic diagram showing the structure of a feeder sheet forming die apparatus according to example 1 of the present utility model when the die is opened;

FIG. 3 is a top view of the upper die base;

FIG. 4 is a top view of the upper plate;

FIG. 5 is a top view of the upper clamp plate;

FIG. 6 is a top view of the stopper plate;

FIG. 7 is a top view of the upper stripper plate;

FIG. 8 is a top view of the lower die holder;

FIG. 9 is a top view of the lower plate;

FIG. 10 is a top view of the lower die plate;

FIG. 11 is a schematic view of a 45 degree bend punch;

FIG. 12 is a schematic view of a 90 degree bend punch;

FIG. 13 is a schematic view of the structure of a negative 45 degree bend forming punch;

FIG. 14 is a schematic structural view of a negative 45 degree bend shaping punch;

FIG. 15 is a schematic view of a 45 degree bend insert;

FIG. 16 is a schematic view of a 90 degree bend insert;

FIG. 17 is a schematic view of the structure of a lower die side slip forming insert;

FIG. 18 is an exploded view of a lower die side slip forming insert;

FIG. 19 is a schematic view of the structure of a lower mold slip shaping insert;

FIG. 20 is a schematic view of the construction of a second square column base and second molding installation;

FIG. 21 is an exploded view of a second square column mount and second molding installation;

FIG. 22 is a schematic structural view of the mounting of the shaping base, the shaping push block, the shaping press block and the limiting block;

FIG. 23 is an exploded view of the mounting of the shaping base, shaping push block, shaping press block, and stop block;

FIG. 24 is a schematic view of the structure of a feed tab after being formed;

the names of the various numbers in the drawings are as follows: 1, stamping an upper die assembly; 2, stamping the lower die assembly; 3, an inner guide post; 4, an upper die holder; 5, an upper backing plate; 6, upper clamping plate; 7, a stop plate; 8, upper stripper plate; 9, foot pad; 10, a lower die holder; 11, a lower backing plate; 12, lower template; 13, an A-shaped punch; 14 45-degree bending punch; 15 90-degree bending punch; 16, a negative 45-degree bending forming punch; 17, a negative 45-degree bending shaping punch; 18, a dual-purpose pin; 19, chamfering a C-shaped punch; 20 45-degree bending insert; 21 90-degree bending of the insert; 22, the lower die sideslip forming insert; 23, a lower die sideslip shaping insert; 24, a first downward sloping surface; 25, a first square groove position; 26, a second square groove position; 27, fillets; 28, a second downwardly inclined surface; 29, a first upwardly inclined surface; 31, a first square column base; 32, a first shaped member; 33, a first trapezoid body; 34, a first body; 35, a first movable lock nut; 36, a second square column base; 37, a second forming member; 38, shaping the base; 39, shaping the pushing block; 40, shaping and briquetting; 41, limiting blocks; 42, a second trapezoid body; 43, a second square; 44, a fourth downward sloping surface; 45, mirroring the L-shaped notch; 46, mirror image L-shaped clasp; 47, a second movable lock nut; 48, a third downward sloping surface; 49, feeding piece; 50, a fifth downward sloping surface.

Detailed Description

Example 1

The device for forming and processing the feeding sheet described in this embodiment 1, as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, includes a punching upper die assembly 1, a punching lower die assembly 2 located right below the punching upper die assembly, and an inner guide post 3 movably mounted between the punching upper die assembly and the punching lower die assembly, where the punching upper die assembly includes an upper die holder 4, an upper pad 5, an upper clamping plate 6, a stop plate 7 and an upper stripper plate 8 sequentially arranged from top to bottom; the stamping lower die assembly comprises a lower pad foot 9, a lower die holder 10, a lower base plate 11 and a lower die plate 12 which are sequentially arranged from bottom to top. The punching upper die assembly of the feed piece forming and processing die device is downwards pressed with the punching lower die seat to realize punching die assembly under the action of driving force such as an air cylinder and the like through the guiding of the inner guide pillar, and upwards reset is carried out to realize demoulding with the punching lower die seat; namely, when the feeding sheet is conveyed to the top of the punching lower die assembly, the feeding sheet can be subjected to various working procedures of punching forming processing through the functions of pressing, punching, and the like of the punching upper die assembly; and the upper base plate, the upper clamping plate, the stop plate and the upper stripper plate can move along with the pressing, stamping, resetting and the like.

The upper clamping plate is provided with an A-shaped punch 13 which penetrates through the stop plate and protrudes downwards, and the upper clamping plate is also provided with a 45-degree bending punch 14, a 90-degree bending punch 15, a negative 45-degree bending forming punch 16 and a negative 45-degree bending forming punch 17 which penetrate through the stop plate and the upper stripping plate and protrude downwards. The A-shaped punch is used for punching technology and the like in the processing process of the feed piece, the 45-degree bending punch is used for punching and bending a part of the feed piece, which needs to be bent, to form downward bending to form 45 degrees, the 90-degree bending punch is used for continuously punching and bending a bent part, which is bent to form downward punching and bending to form 90 degrees, the negative 45-degree bending forming punch is used for continuously punching and bending a bent part, which is bent to form backward punching and bending to form negative 45 degrees (namely, a punching and bending effect of negative 45 degrees is formed with the central axis of the feed piece), and the negative 45-degree bending and shaping punch is used for shaping and trimming the bent part, which is bent to form negative 45 degrees, so that the requirement of product quality is met.

The lower die holder is provided with a dual-purpose pin 18 which penetrates through the lower base plate and the lower die plate and protrudes upwards, and the lower die plate is internally provided with a chamfer C-shaped punch 19; the lower die plate is internally provided with a 45-degree bending insert 20 corresponding to the 45-degree bending punch, a 90-degree bending insert 21 corresponding to the 90-degree bending punch, a lower die sideslip forming insert 22 corresponding to the negative 45-degree bending forming punch and a lower die sideslip forming insert 23 corresponding to the negative 45-degree bending forming punch. In the punching and bending process, the inverted C-shaped angle punch is used for chamfering the feed piece; the 45-degree bending insert is used for being matched with the 45-degree bending punch to realize 45-degree bending of the bending part of the feed piece; the 90-degree bending insert is used for being matched with the 90-degree bending punch to realize the 90-degree bending process of the bending part of the feeding sheet; the lower die sideslip forming insert is used for being matched with a negative 45-degree bending forming punch to realize a negative 45-degree bending process of a bending part of the feed piece; the lower die sideslip shaping insert is used for being matched with a negative 45-degree bending shaping punch to realize a negative 45-degree bending shaping procedure of a bending part of the feed piece.

In this embodiment 1, as shown in fig. 11, one side of the bottom of the 45-degree bending punch is a first downward inclined surface 24 with a 45-degree notch formed from outside to inside, and the other side is a plane connected to the bottom of the first downward inclined surface. In this embodiment 1, as shown in fig. 15, one side of the top of the 45 ° bending insert is a first upward inclined surface 29 formed with a 45 ° notch from outside to inside and disposed corresponding to the first downward inclined surface, and the other side is a plane connected to the top of the first upward inclined surface. When the feeding sheet is pressed down by the 45-degree bending punch, the first downward inclined surface and the first upward inclined surface are both arranged at 45 degrees, and the first downward inclined surface can punch and bend the bending part to the first upward inclined surface, namely, the first downward inclined surface and the first upward inclined surface are matched to form 45-degree bending punching on the bending part of the feeding sheet.

In this embodiment 1, as shown in fig. 12, a first square groove 25 forming a right angle with the side surface is recessed inward at a position where one side surface of the 90-degree bending punch is connected to the bottom. In this embodiment 1, as shown in fig. 16, the 90-degree bending insert has a square column structure, and a punching gap is formed between a first square groove position when the 90-degree bending punch is pressed down and one side surface of the 90-degree bending insert, and the width of the punching gap is equal to the thickness of the feeding piece. When the 90-degree bending head is pressed down, as the first square groove is a concave part, when the 45-degree bending part is pressed down by the bottom plane of the 90-degree bending punch, the bending part is inlaid in the first square groove, and a punching gap formed between the first square groove and the side surface of the 90-degree bending insert can finish inlaying the side bending part in the first square groove to form a non-clamping position and the like; during punching, the 90-degree bending insert is located on the left side, the 90-degree bending punch is located on the right side, the 90-degree bending punch presses down the 45-degree punched bending part onto the corresponding vertical side surface of the 90-degree bending insert, the 90-degree bent part can be embedded into the first square groove to form a 90-degree bending forming effect, the invagination depth of the first square groove is basically consistent with the thickness of the feeding sheet, and reliability of bending forming is guaranteed.

In this embodiment 1, as shown in fig. 13, a second square groove position 26 forming a right angle with the side surface is recessed inward at a position where one side surface of the negative 45-degree bending forming punch is connected with the bottom, and a rounded corner 27 is provided between the second square groove position and the side surface and the bottom of the negative 45-degree bending forming punch. In embodiment 1, as shown in fig. 17 and 18, the lower die side slip forming insert includes a first square pillar base 31, and a first forming member 32 mounted on the first square pillar base. The upper part of the first forming piece is a first trapezoid body 33, the lower part of the first trapezoid body is a first square body 34, one side of the first trapezoid body is a third downward inclined surface 48 which is provided with a negative 45-degree notch from outside to inside and is inclined downwards, and the bottom of the third downward inclined surface is connected with the top of the first square body; and a gap is formed between the second square groove position and the top of the third downward inclined surface when the negative 45-degree bending forming punch is pressed down, and a fillet of the negative 45-degree bending forming punch presses a punched part of the feed piece, which is punched by 90 degrees, to the third downward inclined surface to form negative 45-degree bending forming. The first square column base is provided with a first movable locking nut 35 which is movably locked with the lower die holder. During stamping, a negative 45-degree bending forming punch is positioned on the right side, and a lower die sideslip forming insert is positioned on the left side; when the negative 45-degree bending forming punch is pressed down, the second square groove is tightly attached to the outer side of the bent 90-degree bending part, the round angle gradually presses the top of the 90-degree bending part, and in the continuous pressing process of the negative 45-degree bending forming punch, the top of the 90-degree bending part is continuously pressed by the round angle and turned inwards to enable the inner side surface of the 90-degree bending part to be attached to the third downward inclined surface, so that a negative 45-degree bending effect is formed; the whole lower die sideslip forming insert can achieve the adjustment displacement effect of the first square upright post base through the first movable locking nut, and can be adjusted according to feeding sheets with different thicknesses or different sizes, shapes and the like, so that the lower die sideslip forming insert is flexible and convenient.

In this embodiment 1, as shown in fig. 14, one side of the bottom of the negative 45-degree bending shaping punch is a second downward inclined surface 28 with a 45-degree notch formed from outside to inside, and the other side is a plane connected to the bottom of the second downward inclined surface. In this embodiment 1, as shown in fig. 19, the lower die sideslip shaping insert includes a second square column base 36, a second shaping member 37 mounted on the second square column base, a shaping base 38 located on the right side of the second square column base, a shaping pushing block 39 movably mounted on the shaping base and capable of sliding left and right, a shaping pressing block 40 mounted on top of the shaping pushing block, a limiting block 41 located on the left side of the shaping base and limiting the shaping pushing block to slide in place, and a return spring (not shown in the figure) connected between the shaping pushing block and the shaping base. During stamping, a negative 45-degree bending shaping punch is positioned on the right side, and a lower die sideslip shaping insert is positioned on the left side; when the negative 45-degree bending shaping punch is pressed downwards, the second downward inclined surface of the negative 45-degree bending shaping punch can press the shaping pushing block to slide leftwards and drive the shaping pressing block to move leftwards, and the shaping pressing block can press the bent part of the bent negative 45 on the side surface of the second forming piece to form the shaping effect of bending stamping; after shaping, the negative 45-degree bending shaping punch is reset upwards, the shaping push block and the shaping pressing block are reset under the action of the reset spring, and the limiting block is used for limiting left sliding of the shaping push block in the stamping shaping process, so that the shaping push block is prevented from sliding too much.

As shown in fig. 20 and 21, the second forming member has a second trapezoid 42 at the upper part and a second square 43 at the lower part, and a fourth downward inclined surface 44 with a negative 45 degree gap formed from the outside to the inside and inclined downward is formed at one side of the second trapezoid, and the bottom of the fourth downward inclined surface is connected with the top of the second square.

As shown in fig. 22 and 23, the shaping base is a special-shaped piece, and a mirror image L-shaped notch 45 which forms a mirror image with L is arranged at the top of the shaping base. The left side of the shaping pressing block is a fifth downward inclined surface 50 which is arranged corresponding to the fourth downward inclined surface, and the right side of the shaping pressing block is a mirror image L-shaped buckle 46 which is movably installed in a matched mode with the mirror image L-shaped notch. In the shaping and bending process, the inner side surface of the bent part bent by minus 45 degrees is tightly attached to the fourth downward inclined surface, and the bent part bent by minus 45 degrees is clamped between the fourth downward inclined surface and the fifth downward inclined surface under the action of the thrust pressing force of the shaping pressing block to form a clamping and shaping effect; the thickness of the clamping part of the mirror image L-shaped buckle is smaller than the width of the clamping cavity of the mirror image L-shaped notch, so that the mirror image L-shaped buckle can do certain sliding displacement relative to the mirror image L-shaped notch in the left-right direction without the mirror image L-shaped buckle falling out of the mirror image L-shaped notch; the mirror image L-shaped buckle can slide leftwards during shaping and bending, and the mirror image L-shaped buckle is clamped by the mirror image L-shaped notch after sliding, so that the excessive acting force of the shaping pressing block on the bending part pressed to minus 45 degrees is prevented, and the phenomenon that a feed sheet is left with an indentation or deformation is avoided.

The shaping pushing block is characterized in that symmetrical 45-degree notches are respectively formed in two sides of the top of the shaping pushing block, and the 45-degree notch on the right side is arranged corresponding to the second downward inclined surface.

The limiting block is square and blocky.

The second square upright post base is provided with a second movable locking nut 47 which is movably locked with the lower die holder. The whole lower die sideslip shaping insert can realize the adjustment displacement effect of the second square upright post base through the second movable locking nut, and can be adjusted according to feeding sheets with different thicknesses or different sizes, shapes and the like, so that the lower die sideslip shaping insert is flexible and convenient. The principle and effect achieved by the second movable lock nut is substantially identical to that achieved by the first movable lock nut.

The forming processing die device for the feeding sheet can combine at least two sets of die equipment in the prior art into a whole to realize one-time completion of the processes of cutting, forming, chamfering, bending and the like of the feeding sheet, thereby simplifying the production process, improving the production efficiency, reducing the labor intensity, greatly improving the product yield and reducing the material and energy loss. The processing technology of the forming processing die device of the feed piece comprises a punching technology, a trimming technology for the feed piece, a surface pressing technology, a bending stamping forming technology and the like; through each mold insert and punch etc. set up on the upper stripper plate and the lower bolster of mould, go up the lower bolster and regard inner guide pillar as the benchmark and carry out the punching press to guarantee that the tolerance in the punching press processing is within + -0.005 mm, the side cut is for cutting the blanking shaping to the feed piece, reaches the whole technical requirement of feed piece bending process, has still possessed the production of many types of feed piece products simultaneously, the effectual energy and the cost of having practiced thrift, has promoted the output and the product qualification rate of product simultaneously.

The above description is only of the preferred embodiment of the present utility model, and is not intended to limit the structure of the present utility model in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims (9)

1. The forming processing die device for the feed piece comprises a stamping upper die assembly, a stamping lower die assembly positioned right below the stamping upper die assembly, and an inner guide post movably arranged between the stamping upper die assembly and the stamping lower die assembly, and is characterized in that the stamping upper die assembly comprises an upper die seat, an upper base plate, an upper clamping plate, a stop plate and an upper stripper plate which are sequentially arranged from top to bottom; the stamping lower die assembly comprises a lower pad foot, a lower die holder, a lower backing plate and a lower die plate which are sequentially arranged from bottom to top; an A-shaped punch penetrating through the stop plate and protruding downwards is arranged on the upper clamping plate, and a 45-degree bending punch, a 90-degree bending punch, a negative 45-degree bending forming punch and a negative 45-degree bending forming punch penetrating through the stop plate and the upper stripper plate and protruding downwards are also arranged on the upper clamping plate;

the lower die holder is provided with a dual-purpose pin which penetrates through the lower base plate and the lower die plate and protrudes upwards, and the lower die plate is internally provided with a chamfer C-shaped punch; the lower die plate is internally provided with a 45-degree bending insert corresponding to the 45-degree bending punch, a 90-degree bending insert corresponding to the 90-degree bending punch, a lower die sideslip forming insert corresponding to the negative 45-degree bending forming punch and a lower die sideslip forming insert corresponding to the negative 45-degree bending forming punch.

2. The die set for forming and processing the feeding sheet according to claim 1, wherein one side of the bottom of the 45-degree bending punch is a first downward inclined surface with a 45-degree notch formed from outside to inside, and the other side is a plane connected to the bottom of the first downward inclined surface.

3. The apparatus of claim 2, wherein the connecting portion of one side surface and the bottom of the 90-degree bending punch is recessed inward to form a first square groove at right angles to the side surface.

4. The die set for forming the feeding sheet according to claim 3, wherein a second square groove is formed in a position where one side surface of the negative 45-degree bending forming punch is connected to the bottom, the second square groove being formed in a right angle with the side surface, and rounded corners are formed between the second square groove and the side surface and the bottom of the negative 45-degree bending forming punch.

5. The die set for forming and processing the feeding sheet according to claim 4, wherein one side of the bottom of the negative 45-degree bending and shaping punch is a second downward inclined surface with a 45-degree notch formed from outside to inside, and the other side is a plane connected with the bottom of the second downward inclined surface.

6. The die set for molding a feeding sheet according to claim 5, wherein the 45-degree bent insert has a first upward inclined surface having a 45-degree notch formed therein from outside to inside on one side thereof and corresponding to the first downward inclined surface, and a flat surface connected to the top of the first upward inclined surface on the other side thereof.

7. The apparatus of claim 6, wherein the 90-degree bending insert is a square column structure, and a punching gap is formed between a first square groove position of the 90-degree bending punch and one side surface of the 90-degree bending insert when the 90-degree bending punch is pressed down, and the width of the punching gap is equal to the thickness of the feeding piece.

8. The apparatus of claim 7, wherein the lower side-slip forming insert comprises a first square column base, a first forming member mounted on the first square column base;

the upper part of the first forming piece is a first trapezoid body, the lower part of the first trapezoid body is a first square body, one side of the first trapezoid body is a third downward inclined surface which is provided with a negative 45-degree notch from outside to inside and is inclined downwards, and the bottom of the third downward inclined surface is connected with the top of the first square body; a gap is formed between the second square groove position and the top of the third downward inclined surface when the negative 45-degree bending forming punch is pressed down, and a fillet of the negative 45-degree bending forming punch presses a punched part of the feed piece, which is punched by 90 degrees, to the third downward inclined surface to form negative 45-degree bending forming; the first square upright post base is provided with a first movable locking nut which is movably locked with the lower die holder.

9. The device for forming and processing the feeding sheet according to claim 8, wherein the lower die sideslip shaping insert comprises a second square column base, a second shaping piece arranged on the second square column base, a shaping base positioned on the right side of the second square column base, a shaping pushing block movably arranged on the shaping base and capable of sliding left and right, a shaping pressing block connected with the top of the shaping pushing block, a limiting block positioned on the left side of the shaping base and limiting the shaping pushing block to slide in place, and a reset spring connected between the shaping pushing block and the shaping base;

the middle upper part of the second forming piece is a second trapezoid body, the lower part of the second trapezoid body is a second square body, one side of the second trapezoid body is a fourth downward inclined surface which is provided with a negative 45-degree notch from outside to inside and is inclined downwards, and the bottom of the fourth downward inclined surface is connected with the top of the second square body;

the shaping base is a special-shaped piece, and a mirror image L-shaped notch which forms a mirror image with the L is arranged at the top of the shaping base;

the two sides of the top of the shaping pushing block are respectively provided with symmetrical 45-degree notches, and the 45-degree notch on the right side is correspondingly arranged with the second downward inclined surface;

the left side of the shaping pressing block is a fifth downward inclined surface which is arranged corresponding to the fourth downward inclined surface, and the right side of the shaping pressing block is a mirror image L-shaped buckle which is movably arranged in a matched mode with the mirror image L-shaped notch;

the limiting block is square block-shaped;

and a second movable locking nut which is movably locked with the lower die holder is arranged on the second square upright post base.