CN115106442B

CN115106442B - Stamping die and welding and riveting process method

Info

Publication number: CN115106442B
Application number: CN202210746113.0A
Authority: CN
Inventors: 赵洪林; 董月厚; 王建春; 杨清华
Original assignee: TIANJIN BOSHI FENGTONG TECHNOLOGY CO LTD
Current assignee: Tianjin Xiangshuo Body Technology Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-05-23
Anticipated expiration: 2042-06-28
Also published as: CN115106442A

Abstract

The invention discloses a stamping die and a welding and riveting process method, which belong to the technical field of stamping forming process equipment. If the drawing is arranged on the material discharging base vertically, a spring guide column is movably sleeved on the spring guide column, an integrated assembly is movably sleeved on the spring guide column, and a spring is sleeved on the spring guide column and used for supporting the upper template, so that the template is propped against the punching machine, and the punching machine drives the template to move together. When the automatic feeding device is used, the feeding assembly performs a blanking process on the material belt, the bending assembly performs a bending process on the material belt, the rear side of the integrated forming assembly is provided with a forming blanking assembly, the integrated forming assembly can achieve the effect of automatic feeding, fixation between the nut and the material belt is completed, and the forming blanking assembly is used for finally cutting formed hardware. The invention has reasonable design and compact structure, and solves the problem that the connection strength between the nut and the hardware is difficult to ensure in the prior art.

Description

Stamping die and welding and riveting process method

Technical Field

The invention relates to the technical field of punch forming process equipment, in particular to a punch die and a welding and riveting process method.

Background

The small hardware of the riveting small nut is generally used as a connecting piece and the like, and the production process of the connecting piece and the like is generally finished by adopting two independent systems at present. Firstly, stamping a material belt into a single stamping part, then placing the hardware stamping part manufactured in the first step on a lower die plate, placing nuts at corresponding positions, and then riveting by riveting the stamping parts. The discontinuous twice production method for manufacturing the small stamping part by using the die firstly and then riveting the small stamping part and the nut by using the riveting jig has at least three defects: firstly, manual operation is performed, labor and time are wasted, production efficiency is low, and labor cost is high; secondly, the quality of the product is difficult to ensure, and particularly the connection strength between the nut and the hardware is difficult to ensure; thirdly, manual operation is performed, so that the attention of operators is difficult to keep high concentration at all times, and safety accidents are easy to induce.

Disclosure of Invention

Therefore, the invention provides a stamping die and a welding and riveting process method, which realize automatic nut supply through a single die, and improve the product quality by combining resistance pressure welding and riveting processes so as to solve the problem that the connection strength between the nut and hardware is difficult to ensure in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

according to a first aspect of the present invention,

the invention provides a stamping die which comprises a discharging base, a forming and blanking assembly, an integrated forming assembly, a bending assembly, a feeding assembly and spring guide posts, wherein four spring guide posts are vertically arranged on the discharging base, the four spring guide posts are movably sleeved with the integrated forming assembly, the bending assembly and the feeding assembly are sequentially arranged on the front side of the integrated forming assembly, and the forming and blanking assembly is arranged on the rear side of the integrated forming assembly.

Further, integrated into one piece subassembly includes push rod, material loading passageway, feed channel, connecting rod, welds and rivets forming mechanism and cope match-plate pattern, shaping blanking subassembly sets up and welds and rivet forming mechanism rear side, weld and rivet forming mechanism and feed channel intercommunication, the interpolation of feed channel is equipped with the push rod, the push rod is articulated with the one end of connecting rod, the other end of connecting rod is articulated with the cope match-plate pattern, material loading passageway side and feed channel intercommunication.

Further, weld and rivet forming mechanism includes cooling cylinder, electrically conductive piston rod, reset switch, riveting post and the electrically conductive seat of cooling, be provided with the cooling cylinder on the cope match-plate pattern, be provided with electrically conductive piston rod in the cooling cylinder, electrically conductive piston rod aligns with the riveting post, the riveting post sets up in the electrically conductive seat of cooling, be provided with reset switch between electrically conductive seat of cooling and the electrically conductive piston rod, all be provided with the water-cooling passageway in cooling cylinder and the electrically conductive seat of cooling.

Further, the conductive piston rod comprises a spring air blowing pipe, a conductive piston pipe and a needle valve, the conductive piston pipe is movably inserted into the cooling cylinder, the spring air blowing pipe is arranged in the conductive piston pipe, and the needle valve is arranged at the end part of the spring air blowing pipe.

Further, the material discharging base comprises a limit column, a lower template, a supporting base, a finished product slideway and a blanking slideway, wherein the upper template is propped against the limit column, the limit column is vertically arranged on the lower template, the end part of the lower template is provided with the finished product slideway, the bottom of the lower template is provided with the supporting base, and the blanking slideway is arranged on the supporting base.

Further, the pan feeding subassembly includes mounting panel, goes up the card, feed inlet, lower card and mounting panel down, the mounting panel is installed to the cope match-plate pattern, the fixed upper card that is provided with in bottom of going up the mounting panel, upward be provided with the blanking sword on the card, it is provided with down the card to go up the card lower extreme, the card is installed down on the mounting panel down, upward be provided with the feed inlet between card and the card down.

Further, the bending assembly comprises a female die, a male die, an inserting plate and an insert plate, wherein the female die is arranged on the upper die plate and matched with the male die, the male die is inserted into the inserting plate, the inserting plate is arranged on the insert plate, and the insert plate is fixedly connected with the male die in a threaded manner.

Further, the shaping blanking subassembly includes locating piece, locating plate, drift, blanking piece and counter, the cope match-plate pattern is fixed with the locating piece spiro union, locating piece offsets with the drift, the drift is inserted and is established in the locating plate, the drift aligns with the blanking piece, blanking piece tip is provided with the counter.

Further, the blanking block comprises a separating groove, a blanking groove and a block body, the punch is aligned with the separating groove, the separating groove is arranged at the center of the block body, and the blanking grooves are arranged on two sides of the block body.

According to a second aspect of the present invention,

the invention relates to a welding and riveting process method, which adopts the stamping die provided by the invention and comprises the following steps of;

s1, repeatedly opening and closing the upper die plate and the lower die plate to make reciprocating motion, wherein the cooling air cylinder is always started before the upper die plate, so that the conductive piston rod extends first;

s2, the conductive piston rod is electrically connected with the cooling conductive seat through a reset switch after extending out, so that current passes through the nut and the material belt;

s3, the upper die plate moves downwards to drive the cooling air cylinder to press the conductive piston rod downwards, so that the nut is riveted on the material belt, then the needle valve penetrates through the nut to prop against the material belt, meanwhile, the material belt props against the riveting column, the spring air blowing pipe ejects the punched part of the material belt out of the riveting column, and meanwhile, the needle valve is ejected to release strong air flow to the riveting column.

The invention has the following advantages:

according to the technical scheme, riveting and resistance welding processes are combined in the method, when the method is specifically implemented, firstly, current passes through the nut and the material belt, a large amount of heat is generated between the nut and the material belt due to the fact that the current passes through the nut and the material belt, so that the material belt is softened or even melted, at the moment, a certain force is applied to the nut by using the stamping die to enable the nut to be tightly combined with the material belt, meanwhile, the technical scheme utilizes the upper template to move, and drives the push rod to stretch and retract in the feeding channel through the connecting rod, so that the effect of automatically feeding the nut is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.

Fig. 1 is a perspective view of a stamping die provided by the invention;

fig. 2 is a perspective view of a forming blanking assembly of the stamping die provided by the invention;

FIG. 3 is a cross-sectional view of a conductive piston rod of a stamping die provided by the invention;

FIG. 4 is a perspective view of a weld riveting forming mechanism of a stamping die provided by the invention;

FIG. 5 is a perspective view of an integrally formed component of a stamping die provided by the invention;

fig. 6 is a perspective view of a blanking block of the stamping die provided by the invention;

fig. 7 is a perspective view of a bending assembly of a stamping die provided by the invention;

fig. 8 is a perspective view of a feeding assembly of a stamping die provided by the invention;

fig. 9 is a perspective view of a discharge base of a stamping die provided by the invention;

fig. 10 is a perspective view of a material belt forming of a stamping die provided by the invention;

FIG. 11 is a front view of an integrally formed assembly of a stamping die provided by the present invention;

in the figure: 1, a discharging base; 11 limit posts; 12 lower templates; 13 supporting a base; 14 finished product slideway; 15, a blanking slideway; 2, forming a blanking assembly; a 21 positioning block; 22 positioning plates; 23 punches; 24 blanking blocks; 241 separation grooves; 242 chute; 243 blocks; a 25 counter; 3, integrally forming the assembly; 31 push rod; 32 feeding channels; 33 feed channels; 34 connecting rods; 35 welding and riveting forming mechanism; 351 cooling the cylinder; 352 conductive piston rod; 3251 spring air blowing pipe; 3252 conductive piston tube; 3253 needle valve; 353 reset switch; 354 staking the post; 355 cooling the conductive mount; 36, upper template; 4, bending the assembly; 41 female die; a 42 male die; 43 plugboards; a 44 insert plate; 5 feeding components; 51 an upper mounting plate; 52 upper plug-in board; 53 feed inlet; 54 lower plug-in boards; a lower mounting plate 55; and 6, spring guide posts.

Detailed Description

Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

The invention discloses a stamping die which comprises a discharging base 1, a forming and blanking assembly 2, an integrated forming assembly 3, a bending assembly 4, a feeding assembly 5 and a spring guide column 6. As shown in fig. 1, four spring guide posts 6 are vertically arranged on the discharging base 1, an integrated component 3 is movably sleeved on the four spring guide posts 6, the spring guide posts 6 mainly play a guiding role, and meanwhile springs are sleeved on the spring guide posts 6 to support an upper die plate 36, and the upper die plate 36 is abutted against a punching machine, so that the upper die plate 36 always moves along with the punching machine. The front side of the integrated forming assembly 3 is provided with a bending assembly 4 and a feeding assembly 5 in sequence, the feeding assembly 5 can perform a blanking process on the material belt, the shape after punching and blanking is shown in fig. 10, and the bending assembly 4 performs a bending process on the material belt, and the shape after bending is shown in fig. 10. The integrated into one piece subassembly 3 rear side is provided with shaping blanking subassembly 2, the effect of automatic feeding can be realized to integrated into one piece subassembly 3 to accomplish the fixation between nut and the material area. The forming blanking component 2 is used for finally cutting the cut hardware.

According to one embodiment of the present disclosure, the integrally formed assembly 3 includes a pushrod 31, a feed channel 32, a feed channel 33, a connecting rod 34, a weld rivet forming mechanism 35, and an upper die plate 36. The forming blanking component 2 is arranged at the rear side of the welding and riveting forming mechanism 35, the welding and riveting forming mechanism 35 is communicated with the feeding channel 33, as shown in fig. 5 and 11, a push rod 31 is inserted in the feeding channel 33, the push rod 31 is hinged with one end of a connecting rod 34, the other end of the connecting rod 34 is hinged with an upper template 36, when the upper template 36 moves, the push rod 31 can be driven to do telescopic motion in the feeding channel 33 through the connecting rod 34, the side surface of the feeding channel 32 is communicated with the feeding channel 33, the feeding channel 33 is connected with a vibration feeding machine, and batch nuts are fed into the feeding channel 33 one by one through the feeding channel 32 by the vibration feeding machine, and then are fed into the welding and riveting forming mechanism 35 through the rod 31.

According to one embodiment of the present disclosure, the weld-rivet forming mechanism 35 includes a cooling cylinder 351, a conductive piston rod 352, a reset switch 353, a rivet stem 354, and a cooling conductive seat 355. The upper die plate 36 is provided with a cooling air cylinder 351, a conductive piston rod 352 is arranged in the cooling air cylinder 351, the conductive piston rod 352 is aligned with the riveting column 354, the riveting column 354 is arranged in a cooling conductive seat 355, a reset switch 353 is arranged between the cooling conductive seat 355 and the conductive piston rod 352, when the cooling air cylinder 351 pushes the conductive piston rod 352 to move downwards, the conductive piston rod 352 presses a nut on a material belt through the reset switch 353, the cooling air cylinder 351 and the cooling conductive seat 355 form a conductive loop, and a large amount of heat energy is generated between the nut and the material belt due to the action of current to enable the material belt to soften. And the cooling cylinder 351 and the cooling conductive seat 355 are respectively provided with a water cooling channel, so that the temperature of the cooling conductive seat 355 and the conductive piston rod 352 is reduced, and the hardness of the cooling conductive seat and the conductive piston rod is kept. The specific process flow is that the conductive piston rod 352 firstly pushes the nut to contact the material belt and forms a current path, heat energy is generated on the material belt to raise the temperature of the material belt, then the punching machine drives the upper die plate 36 to move downwards, then the conductive piston rod 352 is driven to move downwards continuously, the cooling conductive seat 355 is matched to punch holes on the material belt and rivet the nut in the holes, and meanwhile, current is continuously introduced to heat the material belt, so that the material belt is partially melted to fix the nut on the material belt in a welding way, and compared with a purely riveted connection mode, the connection strength of the screw nut of the material belt can be remarkably improved, and the yield of hardware production is improved. When the conductive piston rod 352 moves up, the conductive piston rod 352 withdraws from the reset switch 353, at which point the electrical heating is stopped and the tape advances to the conductive piston rod 352 to prepare for the next step, as shown in fig. 4, the reset switch 353 is a contact switch with torsion spring.

According to one embodiment of the present disclosure, the conductive piston rod 352 includes a spring air blowing pipe 3251, a conductive piston pipe 3252 and a needle valve 3253, as shown in fig. 3, a conductive piston pipe 3252 is movably inserted into the cooling cylinder 351, and the conductive piston pipe 3252 is a conductor for forming a path with the cooling cylinder 351, thereby welding a nut and a material tape. The spring air blowing pipe 3251 is arranged in the conductive piston pipe 3252, the spring air blowing pipe 3251 can extend out of the conductive piston pipe 3252 and be inserted into the nut to play a role in positioning, meanwhile, the needle valve 3253 is arranged at the end part of the spring air blowing pipe 3251, when the needle valve is extruded to be opened, air flows out of the needle valve 3253, the effect of cooling a material belt is achieved, air pressure in the cooling cylinder 351 can be reduced rapidly, and the upper template 36 in the cooling cylinder 351 is prevented from being crushed.

According to one embodiment of the present disclosure, the discharging base 1 includes a limit post 11, a lower die plate 12, a support base 13, a finished product slide way 14 and a discharging slide way 15, as shown in fig. 9, an upper die plate 36 abuts against the limit post 11, and the limit post 11 is vertically arranged on the lower die plate 12 to avoid the die from being crushed by a punching machine. The end of the lower template 12 is provided with a finished product slideway 14, the bottom of the lower template 12 is provided with a supporting base 13, the supporting base 13 is provided with a blanking slideway 15, the finished product slideway 14 is used for conveying finished hardware, and the blanking slideway 15 is used for conveying blanked leftover materials.

According to one embodiment of the present disclosure, the feeding assembly 5 includes an upper mounting plate 51, an upper insert plate 52, a feeding port 53, a lower insert plate 54 and a lower mounting plate 55, as shown in fig. 8, the upper insert plate 51 is mounted on the upper die plate 36, the upper insert plate 52 is fixedly disposed at the bottom of the upper mounting plate 51, and a punching blade is disposed on the upper insert plate 52, and the upper die plate 36 can drive the punching blade to move, so that the material strip is punched and punched by the punching blade, and the shape of the material strip as shown in fig. 10 is formed. The lower end of the upper insert plate 52 is provided with a lower insert plate 54, the lower insert plate 54 is mounted on a lower mounting plate 55, and a feed port 53 is arranged between the upper insert plate 52 and the lower insert plate 54, so that the material belt can be smoothly guided into the die.

According to one embodiment of the present disclosure, the bending assembly 4 includes a female die 41, a male die 42, a plug board 43 and an insert board 44, the female die 41 is mounted on the upper die plate 36, the female die 41 is matched with the male die 42, the male die 42 is inserted into the plug board 43, the plug board 43 is disposed on the insert board 44, and the insert board 44 is screwed and fixed with the male die 42. When the lower die plate 36 moves downwards, the female die 41 merges with the male die 42 and presses the rest of the strip, causing it to deform plastically, as shown in fig. 7.

According to one embodiment of the present disclosure, the forming and blanking assembly 2 includes a positioning block 21, a positioning plate 22, a punch 23, a blanking block 24 and a counter 25, an upper die plate 36 is screwed and fixed with the positioning block 21, the positioning block 21 abuts against the punch 23, as shown in fig. 6 and 2, the punch 23 is inserted into the positioning plate 22, the punch 23 is aligned with the blanking block 24, the punch 23 is used for blanking the material strip finally, so that the product is formed finally, and the end of the blanking block 24 is provided with the counter 25 for counting the number of the products.

According to one embodiment of the present disclosure, the blanking block 24 includes a separating groove 241, a blanking groove 242 and a block 243, the punch 23 is aligned with the separating groove 241, and the last blanked leftover material can be fed into the separating groove 241, the separating groove 241 is disposed at the center of the block 243, the blanking grooves 242 are disposed at both sides of the block 243, and the blanking grooves 242 are communicated with the finished product slideway 14 for feeding the product out of the mold.

Example 2

The invention discloses a welding and riveting process method, which is applied to a stamping die provided by the invention and is characterized by comprising the following steps of;

s1, repeatedly opening and closing the upper die plate 36 and the lower die plate 12 to make reciprocating movement, but the cooling air cylinder 351 is always started before the upper die plate 36, so that the conductive piston rod 352 stretches out first, and current passes through the conductive piston rod 352, the nut, the material belt and the cooling conductive seat 355, so that the nut and the material belt are electrically heated in advance, the material belt is softened, and the material belt is easily extruded and broken by the riveting column 354;

s2, after the conductive piston rod 352 stretches out, the conductive piston rod 352 is electrically connected with the cooling conductive seat 355 through the reset switch 353, so that current passes through the nut and the material belt;

s3, the upper template 36 moves downwards to drive the cooling cylinder 351 to press the conductive piston rod 352 downwards, so that the nut is riveted on the material belt, then the needle valve 3253 passes through the nut to be propped against the material belt, meanwhile, the material belt is propped against the riveting column 354, the spring air blowing pipe 3251 ejects the blanked part on the material belt out of the riveting column 354, and meanwhile, the needle valve 3253 is propped open to release strong air flow to the riveting column 354, thereby playing a role in cooling in the welding and riveting shaping process of the nut material belt, simultaneously, the cooling cylinder 351 can be decompressed timely, and damage to the cooling cylinder 351 is prevented.

The application process of the invention is as follows:

the invention discloses a stamping die and a welding and riveting process method, and particularly when the stamping die and the welding and riveting process method are used, firstly a material belt enters from a feed port 53, the material belt is punched and blanked through a blanking cutter, the material belt is extruded and bent through a female die and a male die, then the material belt enters into an integrated forming assembly 3, a cooling cylinder 351 is started before an upper die plate 36, a conductive piston rod 352 is led to extend out first, and accordingly current passes through the conductive piston rod 352, a nut, the material belt and a cooling conductive seat 355, the nut and the material belt are electrically heated in advance, the material belt is softened and is extruded and broken by a riveting column 354, finally a punch 23 is used for blanking the material belt, the product is finally formed, and the end part of a blanking block 24 is provided with a counter 25 for calculating the product quantity.

While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. The stamping die is characterized by comprising a discharging base (1), a forming blanking assembly (2), an integrated forming assembly (3), a bending assembly (4), a feeding assembly (5) and spring guide posts (6), wherein four spring guide posts (6) are vertically arranged on the discharging base (1), the four spring guide posts (6) are movably sleeved with the integrated forming assembly (3), the front side of the integrated forming assembly (3) is sequentially provided with the bending assembly (4) and the feeding assembly (5), and the rear side of the integrated forming assembly (3) is provided with the forming blanking assembly (2);

the integrated into one piece subassembly (3) includes push rod (31), material loading passageway (32), feed channel (33), connecting rod (34), welds and rivets forming mechanism (35) and cope match-plate pattern (36), shaping blanking subassembly (2) set up in welding and riveting forming mechanism (35) rear side, weld and rivet forming mechanism (35) and feed channel (33) intercommunication, the interpolation of feed channel (33) is equipped with push rod (31), push rod (31) are articulated with one end of connecting rod (34), the other end of connecting rod (34) is articulated with cope match-plate pattern (36), feed channel (32) side and feed channel (33) intercommunication;

the welding and riveting forming mechanism (35) comprises a cooling cylinder (351), a conductive piston rod (352), a reset switch (353), a riveting column (354) and a cooling conductive seat (355), wherein the cooling cylinder (351) is arranged on the upper die plate (36), the conductive piston rod (352) is arranged in the cooling cylinder (351), the conductive piston rod (352) is aligned with the riveting column (354), the riveting column (354) is arranged in the cooling conductive seat (355), the reset switch (353) is arranged between the cooling conductive seat (355) and the conductive piston rod (352), and water cooling channels are respectively arranged in the cooling cylinder (351) and the cooling conductive seat (355).

2. The stamping die according to claim 1, wherein the conductive piston rod (352) comprises a spring air blowing pipe (3251), a conductive piston pipe (3252) and a needle valve (3253), the conductive piston pipe (3252) is movably inserted into the cooling cylinder (351), the spring air blowing pipe (3251) is arranged in the conductive piston pipe (3252), and the needle valve (3253) is arranged at the end part of the spring air blowing pipe (3251).

3. A stamping die as claimed in claim 2, characterized in that the discharge base (1) comprises a limit column (11), a lower die plate (12), a support base (13), a finished product slideway (14) and a blanking slideway (15), the upper die plate (36) is propped against the limit column (11), the limit column (11) is vertically arranged on the lower die plate (12), the end part of the lower die plate (12) is provided with the finished product slideway (14), the bottom of the lower die plate (12) is provided with the support base (13), and the blanking slideway (15) is arranged on the support base (13).

4. A stamping die as claimed in claim 3, characterized in that the feed assembly (5) comprises an upper mounting plate (51), an upper insert plate (52), a feed inlet (53), a lower insert plate (54) and a lower mounting plate (55), the upper mounting plate (51) is mounted on the upper die plate (36), the upper insert plate (52) is fixedly arranged at the bottom of the upper mounting plate (51), a blanking knife is arranged on the upper insert plate (52), the lower insert plate (54) is arranged at the lower end of the upper insert plate (52), the lower insert plate (54) is mounted on the lower mounting plate (55), and the feed inlet (53) is arranged between the upper insert plate (52) and the lower insert plate (54).

5. A stamping die as claimed in claim 1, wherein the bending assembly (4) comprises a female die (41), a male die (42), a plug board (43) and an insert board (44), wherein the female die (41) is mounted on the upper die plate (36), the female die (41) is matched with the male die (42), the male die (42) is inserted into the plug board (43), the plug board (43) is arranged on the insert board (44), and the insert board (44) is fixedly connected with the male die (42) in a threaded manner.

6. A stamping die as claimed in claim 1, wherein the forming blanking assembly (2) comprises a positioning block (21), a positioning plate (22), a punch (23), a blanking block (24) and a counter (25), the upper die plate (36) is fixedly connected with the positioning block (21) in a threaded manner, the positioning block (21) abuts against the punch (23), the punch (23) is inserted into the positioning plate (22), the punch (23) is aligned with the blanking block (24), and the counter (25) is arranged at the end of the blanking block (24).

7. A stamping die as claimed in claim 6, wherein the blanking block (24) comprises a separating groove (241), a blanking groove (242) and a block (243), the punch (23) is aligned with the separating groove (241), the separating groove (241) is arranged at the center of the block (243), and the blanking grooves (242) are arranged on both sides of the block (243).

8. A method of welding and riveting a die comprising a stamping die as set forth in claim 3, comprising the steps of;

s1, repeatedly opening and closing the upper template (36) and the lower template (12) to make reciprocating movement, wherein a cooling cylinder (351) is always started before the upper template (36) so that a conductive piston rod (352) extends first;

s2, the conductive piston rod (352) is electrically connected with the cooling conductive seat (355) through the reset switch (353) after extending out, so that current passes through the nut and the material belt;

s3, the upper template (36) moves downwards to drive the cooling cylinder (351) to press the conductive piston rod (352) downwards, so that the nut is riveted on the material belt, then the needle valve (3253) passes through the nut to be abutted against the material belt, meanwhile, the material belt is abutted against the riveting column (354), the spring air blowing pipe (3251) ejects the punched part of the material belt out of the riveting column (354), and meanwhile, the needle valve (3253) is ejected to release strong air flow to the riveting column (354).