CN112935093B - Spring is embraced and is carried mould that upgrades - Google Patents

Abstract

The invention discloses a spring carrying progressive die, which is used for shearing connecting excess materials at the middle parts and connecting excess materials at the two sides of two workpieces in a belt material through a blanking hole after the two workpieces are sheared by sequentially passing through a first punching station, a second right excess material blanking station, a third left excess material blanking station, a fourth workpiece end bending station, a fifth workpiece primary pre-bending station, a sixth workpiece secondary pre-bending station, a seventh workpiece primary bending station, an eighth workpiece rounding station and a ninth workpiece connecting excess material cutting station.

Description

Spring is embraced and is carried mould that upgrades

Technical Field

The invention discloses a preparation method of a spring carrying progressive die, and particularly relates to a spring carrying progressive die.

Background

As shown in fig. 1, the applicant has devised a spring hanger having a mounting hole and two lightening holes, one end of the spring hanger passing through the mounting hole to form a circular hanger. At present, for the round workpiece, after the workpiece is blanked according to the expansion size of the workpiece, punching and rounding processes are performed on the blanked workpiece, and the processing mode has low forming efficiency and generates more waste. In actual production, after the material is cut into a strip shape, the strip material is fed to a progressive die through an automatic feeding machine, the strip material is punched, trimmed, and pre-bent for multiple times, a core rod is inserted into a hollow part of a pre-bent workpiece through an air cylinder to perform a rounding operation, and finally, the prepared workpiece is trimmed and then blanked (for example, the chinese patent with the application number of 2013100324595).

Therefore, the efficiency is greatly improved by adopting the mode of processing the circular workpiece by the progressive die. However, in the workpiece forming process, the core rod for rounding the workpiece needs to be fed through the two cylinders, the rounding mode is complex, only one workpiece can be formed at one time, and the efficiency needs to be improved. Meanwhile, in the feeding process, the feeding speed of the belt material is controlled only through the feeding machine, the length change after bending in each working procedure cannot be realized, the difficulty in manufacturing the die is high, and the distance and the speed of each bending station are difficult to control.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a material saving, and whole circle is simple, and the spring is embraced and is carried progressive die of machining precision accuracy.

In order to solve the technical problems, the invention adopts the following technical scheme:

a spring holding and carrying progressive die comprises an upper die base and a lower die base, wherein an upper die plate and a stripper are sequentially fixed below the upper die base, the lower die plate is fixed on the lower die base, a plurality of guide columns and guide sleeves are respectively arranged on the upper die base and the lower die base, and the upper die base and the lower die base are in sliding connection through the guide columns and the guide sleeves;

the punching male die assembly comprises two second punching male dies with the shape and the size consistent with the appearance and the size of a workpiece lightening hole and a third punching male die with the shape and the size consistent with the appearance and the size of a workpiece assembling hole; each group of rim charge blanking assemblies consists of a first blanking male die and a second blanking male die which are axially symmetrical and arranged at intervals in the length direction of more than two templates; the two end part bending male die insert blocks, the two primary pre-bending female die insert blocks, the two secondary pre-bending female die insert blocks and the two wedges are symmetrically arranged at intervals on the central axis of the template in the length direction; the workpiece preliminary rounding female die insert and the cutting male die are both positioned on the central axis of the upper die plate;

a punching die insert corresponding to the punching male die assembly, two rim charge die inserts corresponding to the two groups of rim charge blanking assemblies one by one, two end bending die inserts corresponding to the end bending male die inserts one by one, two primary pre-bending male die inserts corresponding to the primary pre-bending die inserts one by one, a secondary pre-bending male die insert matched with the two secondary pre-bending female die inserts, a core die, two sliding wedges and a cutting female die insert corresponding to the sliding wedges, wherein one end of each sliding wedge is matched with one end of each primary bending male die insert of a workpiece;

the punching female die insert is provided with two triangular punching holes matched with the second punching male dies one by one and a rectangular punching hole matched with the third punching male die; each slide wedge can slide towards the core mould direction under the extrusion of the corresponding slide wedge and extrude a workpiece, and the inner side of each slide wedge is provided with an extrusion cambered surface corresponding to the side surface of the core mould; the middle part of the cutting female die is provided with a female die hole matched with the cutting male die;

the mounting positions of the primary pre-bending male die insert, the secondary pre-bending male die insert and the core die of the lower die plate are respectively provided with a abdicating groove for bending and deforming a workpiece; the lower die holder is provided with a plurality of blanking holes for dropping punching excess materials, cutting edge excess materials and cutting off and connecting workpieces after the excess materials are cut off. Therefore, when the cutting die is used, the metal strip is placed on the lower template and is continuously fed towards the cutting die by the automatic feeding mechanism. The metal strip is sequentially subjected to punching, edge cutting, end bending, primary pre-bending, secondary pre-bending, primary rounding and rounding, then a workpiece is processed into a spring carrying with two sides connected with the metal strip, finally the connecting parts at two sides of the workpiece are cut through the cooperation of a cutting female die and a cutting male die, and then the workpiece enters a blanking hole along with the spring carrying and is blanked outside a progressive die. The workpiece rounding is formed by primary rounding and rounding, when in primary rounding, the female die insert block which is subjected to the primary rounding of the workpiece is punched downwards, the workpiece is held at one end of the core die and penetrates through the assembly hole to form irregular circular holding, when in rounding, the slide wedges are extruded by the inclined wedges, the two slide wedges are extruded oppositely to form irregular circular holding, the two slide wedges are completely attached to the end part of the core die after being extruded to form regular circular holding, when in rounding, the material is automatically bent and held tightly on the core die through the deformation after being pressed, the structural design of extruding and shaping by the inclined wedges is simple when in rounding, the extruding power is from the press to synchronously move in cooperation with the inclined wedges, and faults are not easy to occur.

Furthermore, two guide punching male dies of which the lower ends penetrate through the stripper plate are arranged between the punching male die assembly of the upper die plate and the rim charge blanking assembly, and a guide female die insert matched with the guide punching male dies is arranged on the lower die plate; the two guide punching male dies are cylindrical and can move along with the upper template and punch the metal strip between the stripper plate and the lower template; two rows of pilot pins are arranged on the stripper plate at intervals in the advancing direction of the metal strip, and a plurality of pilot holes which correspond to the pilot pins one by one are arranged on the lower template; two rows of guide pins correspond to each other one by one, the distance between every two adjacent guide pins in each row is consistent, the two rows of guide pins respectively correspond to one of the guide punching male dies, and the two rows of guide pins and the circle centers of the guide punching male dies corresponding to the two rows of guide pins are positioned on the same straight line. Like this, with the equidistant back of punching a hole of metal strip, control the position of each station through the interval between two adjacent holes, again with leading on the strip hole with upgrade in the mould lead the positive round pin cooperation back, can guarantee to lead positive round pin and lead the positive pore pair at the continuous antedisplacement in-process of metal strip, and then ensure the displacement distance of each metal strip to guarantee that each processing station corresponds correctly with the strip position, promote work piece machining precision. The strip is continuously punched with two pilot holes in the advancing process and then corresponds to the pilot pins arranged on the stripper plate in the advancing process, so that the processing positions of the punch inserts and the die inserts after the strip advances are ensured to be accurate.

Furthermore, four small guide pillars are further arranged on the upper template, are distributed in a rectangular shape and are respectively positioned at four corners of the upper template; four upper guide sleeves which are in one-to-one correspondence with the small guide pillars are arranged on the stripper plate, four lower guide sleeves which are in one-to-one correspondence with the upper guide sleeves are arranged on the lower template, and the lower ends of the small guide pillars are matched with the lower guide sleeves after penetrating through the upper guide sleeves. Therefore, the small guide columns and the guide sleeves can ensure that the relative positions of the upper template, the stripper plate and the lower template are consistent in the stamping process, so that the stress stability of each small male die in the stamping process is protected (when the stripper plate is deflected, the deflection force is borne by the small guide columns, so that the small male dies are protected), and the service life of the die is prolonged.

Furthermore, two rows of floating top pins with the upper ends penetrating through the lower template and the tops arranged in the stripper plate are arranged on the lower die holder, an annular clamping groove is arranged at the position, corresponding to the position where the metal strip to be processed is arranged, of each floating top pin, and each annular clamping groove of the two rows of floating top pins forms a strip advancing positioning space for clamping the metal strip to be processed; a return spring is arranged at the lower end of each floating ejector pin in the lower die base, and when the stripper plate moves upwards after being pressed down along with the upper die plate, the floating ejector pins lift the metal strip for a certain distance under the lifting action of the return springs, so that the lower end face of the metal strip is separated from the upper end face of the lower die plate. Therefore, after the stripper plate and the upper die plate press the metal strip along with the press machine, the metal strip is pressed down by the stripper plate and is tightly attached to the upper end face of the upper die plate, meanwhile, the metal strip and the floating top pin are pressed to move downwards, and the return spring is in a compressed state. After the machining of each station is completed, the press machine drives the stripper plate and the upper die plate to move upwards, the lower pressure is not applied to the upper part of the metal strip, and then each floating ejector pin returns to the initial height after rebounding of the return spring, so that a certain gap is formed between the lower end face of the metal strip and the upper end face of the lower die plate, and the automatic feeding mechanism is convenient to drive the metal strip to continuously move towards the next station. The mode of this kind of adoption top floating pin jacking metal strip sets up simply, can ensure to have certain clearance between metal strip and the lower bolster to the removal of the metal strip of being convenient for. Meanwhile, the two rows of floating ejector pins are arranged, the metal belt materials can be effectively limited in the displacement direction after being clamped in the annular clamping grooves of the two rows of floating ejector pins, the metal belt materials are guaranteed to transversely move, and the metal belt materials correspond to the machining dies of the stations after moving. After the two rows of floating jacking pins are correspondingly arranged, the balance of the jacking force of the metal strip can be ensured.

Further, an upper backing plate is arranged between the upper die plate and the upper die base, an unloading backing plate is arranged between the upper die plate and the unloading plate, and through holes for the punching male die assembly, the rim charge blanking assembly, the two end part bending male die inserts, the two preliminary pre-bending female die inserts, the two secondary pre-bending female die inserts, the workpiece preliminary bending round female die insert, the two wedges and the cutting male die to pass through are formed in the unloading plate and the unloading backing plate; a lower backing plate is arranged between the lower template and the lower die base, and a plurality of through holes corresponding to the blanking holes one by one are arranged on the lower backing plate. Therefore, the lower cushion plate can avoid the damage of the lower die holder, can share the pressure generated after the upper die is pressed down, and avoids the overlarge pressure intensity of the lower die holder. The upper backing plate can provide a position for the installation of the small guide sleeve and protect the upper template. The discharging base plate can prevent the spring from wearing the discharging plate, and is used for assembling the guide sleeve for guiding. Through holes arranged on the discharging plate and the discharging base plate can be used for the modules of all stations to pass through, and conditions are provided for the matching of all the inserts on the lower template.

Furthermore, the lower end of the core mould is provided with a mounting seat parallel to the core mould, the mounting seat is connected with the core mould through a stand column, a plurality of spring holes are arranged at intervals at the lower end of the mounting seat, and a spring with the lower end penetrating into the lower die seat is arranged in each spring hole. Thus, the lower end of the core die is provided with a spring, and after the spring is additionally arranged, the spring can work together with the spring arranged below the floating top pin when the upper die has no pressure, so that the metal strip and the workpiece are supported and separated from the surface of the concave die.

Furthermore, two rows of mounting holes which correspond to one another are formed in the upper template and the upper base plate at intervals, and a discharging spring is arranged in each mounting hole. Like this, the spring of unloading that sets up in upper padding plate and the cope match-plate pattern can provide a jacking force for the stripper, and supplementary stripper is unloaded.

Drawings

FIG. 1 is a perspective view of the prepared spring anchor ear;

FIG. 2 is a processing layout of the metal strip in the embodiment;

FIG. 3 is an exploded view of an embodiment of a progressive die;

FIG. 4 is a schematic view of the mounting structure of each machining insert on the upper template in the embodiment;

FIG. 5 is a schematic view of the mounting structure of each machining insert on the lower template in the embodiment;

FIG. 6 is a top view of an embodiment progressive die;

FIG. 7 is a schematic sectional view of a progressive die in an embodiment;

FIG. 8 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 6;

FIG. 9 is a schematic cross-sectional view taken along line B-B in FIG. 6;

FIG. 10 is a schematic cross-sectional view of C-C of FIG. 6;

FIG. 11 is a schematic cross-sectional view of D-D in FIG. 6;

FIG. 12 is a schematic cross-sectional view taken along line E-E in FIG. 6;

fig. 13 is a schematic cross-sectional view of E-E in fig. 6.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example (b):

as shown in fig. 2 to 13, the spring-supported carrying progressive die provided in this embodiment includes an upper die holder and a lower die holder, an upper template 3 and a stripper 5 are sequentially fixed below the upper die holder 1, a lower template 6 is fixed on the lower die holder 8, a plurality of guide pillars 10 and guide sleeves 9 are respectively disposed on the upper die holder 1 and the lower die holder 8, and the upper die holder 1 and the lower die holder 8 are slidably connected through the guide pillars 10 and the guide sleeves 9; a group of punching male die assemblies with the lower ends penetrating through the stripper plate 5, two groups of leftwards and rightwards symmetrically arranged rim charge blanking assemblies, two end part bending male die inserts 20, two primary pre-bending female die inserts 22, two secondary pre-bending female die inserts 24, a workpiece primary bending round female die insert 26, two wedges 28 and a cutting male die 32 are sequentially arranged on the upper die plate 3 at intervals in the direction from the feeding end to the discharging end;

the punching male die assembly comprises two second punching male dies 12 and a third punching male die 13, wherein the shapes and the sizes of the second punching male dies are consistent with those of the workpiece lightening holes; each group of rim charge blanking assemblies consists of a first blanking male die 17 and a second blanking male die 18 which are axially symmetrical and arranged at intervals in the length direction of more than two templates; the two end part bending punch insert blocks 20, the two preliminary pre-bending die insert blocks 22, the two secondary pre-bending die insert blocks 24 and the two wedges 28 are symmetrically arranged at intervals on the central axis of the upper template in the length direction; the workpiece preliminary rounding die insert 26 and the cutting male die 32 are both positioned on the central axis of the upper die plate;

a punching die insert 14 corresponding to the punching punch assembly, two rim charge die inserts 19 corresponding to two groups of rim charge blanking assemblies one by one, two end bending die inserts 21 corresponding to the end bending die inserts 20 one by one, two primary pre-bending die inserts 23 corresponding to the primary pre-bending die inserts 22 one by one, a secondary pre-bending die insert 25 matched with the secondary pre-bending die insert 24, a core die 27 of which one end is matched with a workpiece primary bending die insert 26, two slide wedges 29 arranged on two sides of the other end of the core die 27, and a cutting die insert 33 corresponding to the cutting die 32, wherein the outer ends of the slide wedges are respectively matched with corresponding inclined wedges 28;

the punching female die insert 14 is provided with two triangular punching holes matched with the second punching male dies one by one and a rectangular punching hole matched with the third punching male die; each slide wedge 29 can slide toward the direction of the core mold 27 under the extrusion of the corresponding slide wedge 28 and extrude the workpiece, and the inner side of each slide wedge 29 is provided with an extrusion arc surface corresponding to the side surface of the core mold 27; a female die hole matched with the cutting male die 32 is formed in the middle of the cutting female die insert 33;

the mounting positions of the primary pre-bending punch insert 23, the secondary pre-bending punch insert 25 and the core mold 27 of the lower template 6 are respectively provided with a abdicating groove for bending and deforming a workpiece; and a plurality of blanking holes for dropping punching excess materials, cutting edge excess materials and cutting off and connecting workpieces after the excess materials are cut off are formed in the lower die base.

As shown in fig. 2, the spring cradle in this embodiment is machined in nine stations, and the first station punches three holes in the workpiece through the cooperation of the punch assembly and the punch die insert, and simultaneously punches the pilot hole. The second station is used for cutting the excess material on the right side of the workpiece, the third station is used for cutting the excess material on the left side of the workpiece, the fourth station is used for bending the ends of the two ends of the workpiece downwards, the fifth station is used for preliminarily bending the workpiece, the sixth station is used for preliminarily bending the workpiece for the second time, the seventh station is used for preliminarily bending the workpiece, the eighth station is used for rounding the workpiece, and the ninth station is used for enabling the sheared workpiece to leak through a blanking hole after the excess material is connected with the two sides of the workpiece in the belt material and sheared. When the device is specifically implemented, the upper end of the upper die base 1 is connected with a press machine, and the press machine drives the upper die base 1, the upper die plate 3 and the stripper 5 to press downwards or move upwards together. When the metal strip is processed, the metal strip is placed between the stripper plate 5 and the lower template 6, and the metal strip is continuously fed by the automatic feeding mechanism. When the upper template 3 is pressed down along with the press each time, each station processes the metal strip material at the corresponding position.

Because the male die and the female die of the progressive die in the application are installed in an insert mode, therefore, installation holes formed in the die are more, in order to improve the strength of the die, the male die insert and the female die insert are arranged after the first station to the seventh station are separated by one station interval, and the corresponding insert is arranged after the eighth station and the ninth station are separated by two station intervals. Corresponding workpiece accommodating grooves are formed in the positions, corresponding to the positions between the fifth station and the ninth station, of the lower die plate 6, so that the bent workpieces can be accommodated conveniently.

Two pilot punching male dies 15 with the lower ends penetrating through the stripper plate are arranged between the punching male die assembly and the rim charge blanking assembly of the upper die plate 3, and a pilot female die insert 16 matched with the pilot punching male dies 15 is arranged on the lower die plate 6; the two guide punching male dies 15 are cylindrical and can move along with the upper template 3 and punch the metal strip between the stripper plate 5 and the lower template 6; two rows of guide pins 37 are arranged on the discharging plate 5 at intervals in the forward direction of the metal strip, and a plurality of guide holes corresponding to the guide pins 37 one by one are arranged on the lower template 6; the two rows of the guide pins 37 correspond to each other one by one, the distance between every two adjacent guide pins 37 in each row is consistent, the two rows of the guide pins 37 correspond to one of the guide punching male dies 15 respectively, and the centers of the guide punching male dies 15 corresponding to the guide pins are positioned on the same straight line.

Four small guide posts 34 are also arranged on the upper template 3, and the four small guide posts 34 are distributed in a rectangular shape and are respectively positioned at four corners of the upper template; four upper guide sleeves 35 corresponding to the small guide posts 34 one by one are arranged on the stripper plate 5, four lower guide sleeves 36 corresponding to the upper guide sleeves 35 one by one are arranged on the lower template 6, and the lower ends of the small guide posts 34 are matched with the lower guide sleeves 36 after penetrating through the upper guide sleeves 35.

Two rows of floating top pins 38 with the upper ends penetrating through the lower template 6 and the tops arranged in the stripper plate 5 are arranged on the lower die holder 8, an annular clamping groove is arranged at the position corresponding to the position where each floating top pin 38 is arranged on the metal strip to be processed, and each annular clamping groove of the two rows of floating top pins 38 forms a strip advancing positioning space for clamping the metal strip to be processed; a return spring is arranged in the lower die holder and at the lower end of each floating ejector pin 38, and when the stripper plate moves upwards after being pressed down along with the upper die plate, the floating ejector pins lift the metal strip for a certain distance under the lifting action of the return springs, so that the lower end face of the metal strip is separated from the upper end face of the lower die plate.

An upper backing plate 2 is further arranged between the upper template 3 and the upper die base 1, an unloading backing plate 4 is arranged between the upper template 3 and the unloading plate 5, and through holes for the punching male die assembly, the rim charge blanking assembly, two end part bending male die inserts, two primary pre-bending female die inserts, two secondary pre-bending female die inserts, a workpiece primary bending round female die insert, two wedges and a cutting male die to pass through are formed in the unloading plate 5 and the unloading backing plate 4; a lower backing plate 7 is arranged between the lower template 6 and the lower die base 8, and a plurality of through holes corresponding to the blanking holes are arranged on the lower backing plate 7.

The lower end of the core mould 27 is provided with a mounting seat parallel to the core mould, the mounting seat is connected with the core mould through a stand column, a plurality of spring holes are arranged at intervals at the lower end of the mounting seat, and a spring 40 with the lower end extending into the lower die holder is arranged in each spring hole.

Two rows of mounting holes which correspond to each other one by one are arranged on the upper template 3 and the upper backing plate 2 at intervals, and a discharging spring 41 is arranged in each mounting hole.

It should be noted that, although the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, the applicant has described the technical solutions of the present invention in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the technical solutions are covered by the claims of the present invention.

Claims (7)

1. A spring holding and carrying progressive die comprises an upper die holder and a lower die holder, wherein an upper die plate (3) and a stripper plate (5) are sequentially fixed below the upper die holder (1), a lower die plate (6) is fixed on the lower die holder (8), a plurality of guide pillars (10) and guide sleeves (9) are respectively arranged on the upper die holder (1) and the lower die holder (8), and the upper die holder (1) and the lower die holder (8) are in sliding connection through the guide pillars (10) and the guide sleeves (9), and the spring holding and carrying progressive die is characterized in that a group of punching male die assemblies, two groups of rim charge blanking assemblies, two end bending male die inserts (20), two primary pre-bending female die inserts (22), two secondary pre-bending female die inserts (24), a workpiece primary bending round female die wedge insert (26), two inclined male die inserts (28) and a cutting-off die (32) are sequentially arranged on the upper die plate (3) at intervals from the feed end to the discharge end;

the punching male die assembly comprises two second punching male dies (12) and a third punching male die (13), the shapes and the sizes of the second punching male dies are consistent with those of the workpiece lightening holes, and the sizes of the third punching male dies are consistent with those of the workpiece assembling holes; each group of rim charge blanking assemblies consists of a first blanking male die (17) and a second blanking male die (18) which are axially symmetrical in the length direction of more than two templates and are arranged at intervals; the two end part bending male die inserts (20), the two primary pre-bending female die inserts (22), the two secondary pre-bending female die inserts (24) and the two wedges (28) are symmetrically arranged at intervals on the central axis of the template in the length direction; the workpiece primary rounding die insert (26) and the cutting male die (32) are both positioned on the central axis of the upper die plate;

a punching die insert (14) corresponding to the punching punch assembly, two rim charge die inserts (19) corresponding to two groups of rim charge blanking assemblies one by one, two end part bending die inserts (21) corresponding to the end part bending die inserts (20) one by one, two primary pre-bending punch inserts (23) corresponding to the primary pre-bending die inserts (22) one by one, a secondary pre-bending punch insert (25) matched with the secondary pre-bending die insert (24), a core die (27) of which one end is matched with the workpiece primary bending die insert (26), two slide wedges (29) arranged on two sides of the other end of the core die (27) and of which the outer ends are respectively matched with corresponding inclined wedges (28) and a cutting die insert (33) corresponding to the cutting punch (32) are sequentially arranged on the lower template (6) from the feeding end to the discharging end at intervals;

the punching female die insert (14) is provided with two triangular punching holes matched with the second punching male dies one by one and a rectangular punching hole matched with the third punching male die; each slide wedge (29) can slide towards the core mould (27) under the extrusion of the corresponding slide wedge (28) and extrude a workpiece, and the inner side of each slide wedge (29) is provided with an extrusion arc surface corresponding to the side surface of the core mould (27); a female die hole matched with the cutting male die (32) is formed in the middle of the cutting female die insert (33);

the mounting positions of the primary pre-bending punch insert (23), the secondary pre-bending punch insert (25) and the core mold (27) of the lower template (6) are respectively provided with a relief groove for bending deformation of a workpiece; and a plurality of blanking holes for dropping punching excess materials, cutting edge excess materials and cutting off and connecting workpieces after the excess materials are cut off are formed in the lower die base.

2. The spring armoring progressive die as claimed in claim 1, wherein two pilot punches (15) having lower ends passing through the stripper plate are provided between the punch assembly of the upper die plate (3) and the trim blanking assembly, and a pilot die insert (16) fitted with the pilot punches (15) is provided on the lower die plate (6); the two guide punching male dies (15) are cylindrical and can move along with the upper template (3) and punch the metal strip between the stripper plate (5) and the lower template (6); two rows of guide pins (37) are arranged on the discharging plate (5) at intervals in the advancing direction of the metal strip, and a plurality of guide holes corresponding to the guide pins (37) one by one are formed in the lower template (6); two rows of guide pins (37) are in one-to-one correspondence, the distance between every two adjacent guide pins (37) in each row is consistent, the two rows of guide pins (37) respectively correspond to one guide punching male die (15), and the centers of the guide pins and the corresponding guide punching male dies (15) are positioned on the same straight line.

3. The spring armful of progressive die of claim 1, wherein the upper die plate (3) is further provided with four small guide posts (34), and the four small guide posts (34) are distributed in a rectangular shape and are respectively positioned at four corners of the upper die plate; four upper guide sleeves (35) which are in one-to-one correspondence with the small guide posts (34) are arranged on the discharging plate (5), four lower guide sleeves (36) which are in one-to-one correspondence with the upper guide sleeves (35) are arranged on the lower template (6), and the lower ends of the small guide posts (34) are matched with the lower guide sleeves (36) after penetrating through the upper guide sleeves (35).

4. The spring carrying progressive die as claimed in claim 1, 2 or 3, wherein two rows of floating top pins (38) are provided on the lower die holder (8), the upper ends of the two rows of floating top pins penetrate through the lower die plate (6), the tops of the two rows of floating top pins are arranged in the stripper plate (5), a circular clamping groove is provided at a position of each floating top pin (38) corresponding to the position of the metal strip to be processed, and each circular clamping groove of the two rows of floating top pins (38) forms a belt material front positioning space for clamping the metal strip to be processed; a return spring is arranged in the lower die holder and at the lower end of each floating ejector pin (38), and when the stripper plate moves upwards after being pressed down along with the upper die plate, the floating ejector pins lift the metal strip for a certain distance under the lifting action of the return springs, so that the lower end face of the metal strip is separated from the upper end face of the lower die plate.

5. The spring carrying progressive die as claimed in claim 4, wherein an upper backing plate (2) is further provided between the upper die plate (3) and the upper die base (1), a discharging backing plate (4) is provided between the upper die plate (3) and the discharging plate (5), and through holes for passing a punching male die assembly, a rim charge blanking assembly, two end bending male die inserts, two preliminary pre-bending female die inserts, two secondary pre-bending female die inserts, one workpiece preliminary bending female die insert, two wedges and one cutting male die are provided on each of the discharging plate (5) and the discharging backing plate (4); a lower backing plate (7) is arranged between the lower template (6) and the lower die holder (8), and a plurality of through holes which are in one-to-one correspondence with the blanking holes are arranged on the lower backing plate (7).

6. The progressive die for spring armoring according to claim 4, wherein the lower end of the core die (27) is provided with a mounting seat parallel thereto, the mounting seat and the core die are connected by a column, a plurality of spring holes are provided at intervals at the lower end of the mounting seat, and a spring (40) having a lower end penetrating into the lower die seat is provided in each spring hole.

7. The spring carrying progressive die according to claim 4, wherein two rows of one-to-one corresponding mounting holes are provided at intervals on the upper die plate (3) and the upper backing plate (2), and a discharge spring (41) is provided in each mounting hole.

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