CN211866355U - Progressive stamping die for clamping piece of multifunctional electric power instrument - Google Patents

Abstract

The utility model relates to a modulus of continuity field, specifically relate to a gradual stamping die of fastener of multi-functional electric power instrument, including die carrier and the last mould of slidable mounting in die carrier inside, the bed die, go up the mould, the equal parallel arrangement of bed die is and arrange along stamping direction order, it is provided with the first blanking station of arranging along material direction of feed order in proper order to go up between mould and the bed die, the second blanking station, first turn-ups station, second turn-ups station, third blanking station, it runs through the mould respectively to install a plurality of work ends on mould and the bed die respectively, the bed die is and extend to the flanging device between mould and the bed die, six stamping processes can once be accomplished to this mould, thereby make the complex fastener of structure can punch out a finished product at every turn, high production efficiency.

Description

Progressive stamping die for clamping piece of multifunctional electric power instrument

Technical Field

The utility model relates to a modulus of continuity field specifically is a progressive stamping die of fastener of multi-functional electric power instrument.

Background

The three-phase multifunctional electric power instrument is one kind of multifunctional intelligent instrument with programmable measurement, display, digital communication, electric energy pulse transmission and output functions. For example, chinese patent CN201820922528.8 discloses a three-phase multifunctional power instrument, which comprises an outer shell, still include the direction and install the checkpost on the shell lateral surface, be provided with shell guide structure on the shell lateral surface, the checkpost includes the checkpost body, be provided with on the checkpost body with the direction cooperation of shell guide structure checkpost guide structure of installing, be provided with the fixed knot structure that the checkpost was fixed in on the shell after the checkpost removed between shell and the checkpost, be provided with the step on the shell, still be equipped with elastic construction on the checkpost body and be used for with the step face of step with this three-phase multifunctional power instrument centre gripping together. The checkpost passes through guide structure to be installed on the shell, and the checkpost passes through elastic construction and the step face of step together with this multi-functional electric power instrument centre gripping of three-phase to be fixed in the frame or be fixed in mounting structure on with electric power instrument by fixed knot structure, remove from and use the screw, thereby solve among the prior art electric power instrument and adopt the screw installation to lead to the problem that the dismouting is inefficient, the screw loses easily.

The structure of the disclosed clip is complex, an integrated injection molding is generally used, the speed of the integrated injection molding is low, the production efficiency is low, the price under the same strength is almost the same as that of a metal stamping part, a plurality of processes are needed when the clip is produced by using metal stamping, and the production efficiency is also low.

The progressive die is a cold stamping die which adopts a strip-shaped stamping raw material in a stamping stroke of a press machine and simultaneously completes a plurality of stamping processes on a pair of dies by using a plurality of different stations, and the material strip moves once at a fixed distance every time the dies complete stamping until the product is completed. The continuous die is used for producing the clips, so that one clip finished product can be produced at a time, and the efficiency is high. At present, there is no continuous mold for producing the clip.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a multi-functional electric power instrument's fastener progressive stamping die is provided, six stamping processes can once be accomplished to this mould to make the fastener that the structure is complicated can a finished product of punching press play at every turn, production efficiency is high.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a gradual stamping die of fastener of multi-functional electric power instrument, be applied to processing fastener, including die carrier and the last mould of slidable mounting in the die carrier inside, the bed die, go up the mould, the equal parallel arrangement of bed die is and arrange along stamping direction order, it is provided with the first blanking station of arranging along material direction of feed order in proper order to go up between mould and the bed die, second blanking station, first turn-ups station, second turn-ups station, third blanking station, it runs through the mould respectively to install a plurality of work ends on mould and the bed die respectively, the bed die is and extend to the flanging device between mould and the bed die.

Preferably, the bottom surface of the upper die is provided with a first male die, a second male die and a third male die which are sequentially arranged along the material feeding direction, and the lower die is provided with a first female die, a second female die and a third female die which are in one-to-one correspondence with the first male die, the second male die and the third male die.

Preferably, the top surface of the lower die is provided with a termination baffle which vertically extends upwards and is located at the front end of the third blanking station, one surface of the termination baffle facing the third blanking station is matched with the front end of the clamping piece, and the bottom surface of the upper die is provided with a first avoidance opening for avoiding the termination baffle.

Preferably, the die carrier is including the upper die base, the die holder, the guide pillar, the upper die base, the push pedal, go up the mould, the bed die, the equal parallel arrangement of die holder and arrange along stamping direction order, through guide pillar fixed connection between upper die base and the die holder, still be provided with the push pedal between die holder and the guide pillar, the push pedal, go up the mould, the bed die all with guide pillar sliding connection, a plurality of flanging device install respectively in die holder and push pedal, push pedal and last mould elastic connection, bed die and die holder elastic connection.

Preferably, install the elastic connection push pedal between push pedal and the last mould, go up the elastic connection device of mould, also install the same structure between bed die and the die holder, elastic connection device is including first elastic component, first locating part, the second locating part, first elastic component suit is on the guide pillar, the both ends of first elastic component respectively with the push pedal, it supports to lean on to go up the mould, first locating part, the one end of second locating part all with push pedal fixed connection, the other end of first locating part is located between push pedal and the last mould, the other end of second locating part runs through the last mould and extends to the bottom surface below of mould, the one end that the second locating part is close to the last mould is provided with and supports the first retainer who leans on last mould bottom surface.

Preferably, the flanging device comprises an inclined sliding block, a roller, a wheel groove and a folding line top block, wherein the inclined sliding block is respectively installed in an upper die and a lower die in a tilting sliding manner, the folding line top block is respectively and fixedly installed on one surface of the upper die, which faces the upper die, of the push plate and one surface of the lower die, which faces the lower die, of the lower die seat, the folding line top block is located at the end point of the stroke of the inclined sliding block, the roller is installed at the position, which is far away from the upper die, of the inclined sliding block, one end between the lower dies, the circumferential surface of the roller is located on the outer side of the inclined sliding block, the wheel groove is fixedly installed on the push plate or.

Preferably, the material pressing and demoulding device comprises an ejector pin, a second stop piece, a third stop piece and a second elastic piece, the ejector pin vertically penetrates through the push plate and the upper mould, the second stop piece is arranged at the top end and the middle end of the ejector pin, the third stop piece is positioned on one side, away from the upper mould, of the push plate, the second elastic piece is positioned on one side, close to the push plate, of the upper mould, the second elastic piece is sleeved on the ejector pin, and two ends of the second elastic piece abut against the push plate and the third stop piece respectively.

Compared with the prior art, the utility model beneficial effect who has is:

the clamping piece needs to be subjected to six working procedures in a stamping die, the stamping die processes the material belt through the six working procedures, and the die can stamp seven gradually-formed clamping pieces on the material belt at the same time; the first blanking station is used for blanking the front end outer edge of the first clamping piece, the rear end outer edge of the second clamping piece and the pre-flanging opening of the sliding block; the second blanking station is used for blanking the inner edge of the front end of the second clamping piece and the pre-flanging opening of the springback piece of the third clamping piece; the first flanging station is used for turning over a first flanging of the sliding block of the third clamping piece and a first flanging of the rebound piece of the fourth clamping piece; the second flanging station is used for turning over a second flanging of the sliding block of the fifth clamping piece and a second flanging of the rebound piece; the third flanging station is used for turning over a third flanging of the resilient piece of the sixth clamping piece; the third blanking station is used for cutting a blanking portion between the sixth clamping piece and the seventh clamping piece, and separating the sixth clamping piece from the seventh clamping piece, so that the seventh clamping piece becomes a finished product which can be taken out of the production line, and then the worker takes out the seventh clamping piece and moves a subsequent clamping piece forward at the same time.

The die can complete six stamping processes at one time, so that a finished product can be stamped out of the clamping piece with a complex structure at each time, and the production efficiency is high.

Drawings

FIG. 1 is a perspective view of a latch;

FIG. 2 is a perspective view of the fastener tape;

FIG. 3 is a perspective view showing the mold opened state of the present invention;

FIG. 4 is a perspective view of the upper mold of the present invention;

fig. 5 is a perspective view of a lower mold of the present invention;

FIG. 6 is a front view of the mold opening state of the present invention;

FIG. 7 is a sectional view taken along line A-A of FIG. 6;

FIG. 8 is a top view of the mold opening state of the present invention;

FIG. 9 is a sectional view taken along line B-B of FIG. 8;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 8;

fig. 11 is a front view of the mold clamping state of the present invention;

FIG. 12 is a cross-sectional view taken along line D-D of FIG. 11;

FIG. 13 is an enlarged view of a portion of FIG. 12 at E;

fig. 14 is a plan view of the mold clamping state of the present invention;

FIG. 15 is a sectional view taken in the direction F-F of FIG. 14;

FIG. 16 is an enlarged view of a portion of FIG. 15 at G;

the reference numbers in the figures are:

1-a snap-fit; 1 a-front end outer edge; 1 b-rear end outer edge; 1 c-pre-flanging opening of the sliding block; 1 d-front inner edge; 1 e-pre-flanging opening of the resilient member; 1 f-a first flanging of the slide block; 1 g-a first flanging of the resilient member; 1 h-second flanging of the sliding block; 1 i-a second flanging of the resilient member; 1 j-a third flanging of the rebound piece; 1 k-a blanking part;

2-a mould frame; 2 a-an upper die holder; 2 b-a lower die holder; 2 c-guide posts;

3-pushing the plate;

4-elastic connection means; 4 a-a first elastic member; 4 b-a first limit stop; 4 c-a second stop; 4c1 — first stop;

6, mounting a mold; 6 a-a first male die; 6 b-a second male die; 6 c-a third male die; 6 d-a first avoidance opening;

7-lower mould; 7 a-a first female die; 7 b-a second female die; 7 c-a third female die; 7 d-stop baffle;

8-a flanging device; 8 a-a slanted slider; 8 b-a roller; 8 c-wheel groove; 8 d-folding line top block;

9-pressing and demoulding device; 9 a-a thimble; 9 b-a second stop; 9 c-a third stop; 9 d-second elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The progressive stamping die for the clamping piece of the multifunctional electric instrument shown in fig. 1 to 16 is applied to processing the clamping piece 1, and comprises a die frame 2, an upper die 6 and a lower die 7 which are slidably mounted inside the die frame 2, wherein the upper die 6 and the lower die 7 are arranged in parallel and are sequentially arranged along a stamping direction, a first blanking station, a second blanking station, a first flanging station, a second flanging station, a third flanging station and a third blanking station which are sequentially arranged along a material feeding direction are arranged between the upper die 6 and the lower die 7, and a plurality of working ends respectively penetrate through the upper die 6 and the lower die 7 and extend to a flanging device 8 between the upper die 6 and the lower die 7.

As shown in fig. 1 and 2, fig. 1 shows a finished state of the engaging element 1, fig. 2 shows a gradually molded state of the engaging element 1, the engaging element 1 needs to go through six steps in a stamping die, the stamping die processes the material strip through the six steps, and the die can stamp seven gradually molded engaging elements 1 on the material strip at the same time;

the first blanking station is used for blanking a front end outer edge 1a of the first clamping piece, a rear end outer edge 1b of the second clamping piece and a slide block pre-flanging opening 1 c;

the second blanking station is used for blanking the inner edge 1d at the front end of the second clamping piece and the pre-flanging opening 1e of the springback piece of the third clamping piece;

the first flanging station is used for turning over a first flanging 1f of the sliding block of the third clamping piece and a first flanging 1g of the rebound piece of the fourth clamping piece;

the second flanging station is used for turning over a second flanging 1h of the slide block of the fifth clamping piece and a second flanging 1i of the rebound piece;

the third flanging station is used for turning over a third flanging 1j of the resilient piece of the sixth clamping piece;

the third blanking station is used for cutting the blanking part 1k between the sixth clamping piece and the seventh clamping piece, separating the sixth clamping piece from the seventh clamping piece, enabling the seventh clamping piece to become a finished product which can be taken out of the production line, and then taking out the seventh clamping piece by a worker and simultaneously moving the subsequent clamping pieces forward by one station;

the slide block comprises a front end outer edge 1a, a rear end outer edge 1b and a front end inner edge 1d which form a pincerlike end part of a clamping piece 1 and are used for clamping a specific part, a slide block pre-flanging opening 1c, a slide block first flanging 1f and a slide block second flanging 1h form an L-shaped slide block with a working end below the clamping piece 1, the slide block is used for installing the clamping piece 1 in an L-shaped or T-shaped slide rail in a sliding mode, a resilience piece pre-flanging opening 1e, a resilience piece first flanging 1g, a resilience piece second flanging 1i and a resilience piece third flanging 1j form a resilience piece with a working end below the bottom surface of the slide block, the resilience piece is used for abutting against the top surface of the slide rail and forming resilience force for driving the clamping piece 1 to be vertically separated from the slide rail, the slide block installed inside the slide rail is abutted against the inner wall of the slide rail, and the.

The bottom surface of the upper die 6 is provided with a first male die 6a, a second male die 6b and a third male die 6c which are sequentially arranged along the material feeding direction, and the lower die 7 is provided with a first female die 7a, a second female die 7b and a third female die 7c which are in one-to-one correspondence with the first male die 6a, the second male die 6b and the third male die 6 c.

As shown in fig. 4 and 5, the first male die 6a and the first female die 7a are used for punching a front end outer edge 1a, a rear end outer edge 1b and a slider pre-flanging opening 1c, the second male die 6b and the second female die 7b are used for punching a front end inner edge 1d and a rebound member pre-flanging opening 1e, and the third male die 6c and the third female die 7c are used for punching a blanking portion 1 k.

The top surface of the lower die 7 is provided with a stop baffle 7d which vertically extends upwards and is positioned at the front end of the third blanking station, one surface of the stop baffle 7d facing the third blanking station is matched with the front end of the clamping piece 1, and the bottom surface of the upper die 6 is provided with a first avoidance opening 6d for avoiding the stop baffle 7 d.

As shown in fig. 4 and 5, the terminating flap 7d is used to block the foremost end of the material tape, that is, the front outer edge 1a of the seventh engaging member, and the worker aligns and fits the front outer edge 1a of the seventh engaging member with the terminating flap 7d, so that the material tape can be placed at the correct position, and during the punching operation, the terminating flap 7d is submerged into the first avoiding opening 6d, which has no influence on the punching operation.

Die carrier 2 is including upper die base 2a, die holder 2b, guide pillar 2c, upper die base 2a, push pedal 3, go up mould 6, bed die 7, equal parallel arrangement of die holder 2b and arrange along stamping direction order, through guide pillar 2c fixed connection between upper die base 2a and the die holder 2b, still be provided with push pedal 3 between die holder 2b and the guide pillar 2c, push pedal 3, go up mould 6, bed die 7 all with guide pillar 2c sliding connection, install respectively on die holder 2b and push pedal 3 a plurality of flanging device 8, push pedal 3 and 6 elastic connection of last mould, bed die 7 and die holder 2b elastic connection.

As shown in fig. 3 and 10, the upper die base 2a, the lower die base 2b, the die carrier 2 is composed of guide pillars 2c, and is used for installing an upper die 6 and a lower die 7, in operation, the driving device drives the push plate 3 to move towards the direction of the lower die 7, the push plate 3 drives the upper die 6 to move towards the lower die 7 together, the upper die 6 is attached to the lower die 7 and drives the lower die 7 to move towards the lower die base 2b together, blanking work is completed between the upper die 6 and the lower die 7, the flanging device 8 installed on the lower die base 2b passes through the lower die 7 to perform flanging work, the flanging device 8 installed on the push plate 3 simultaneously passes through the upper die 6 to perform flanging work, after stamping is completed, the driving device drives the push plate 3 to reset, and the upper die 6 and the lower die 7 automatically reset.

An elastic connection push plate 3 and an elastic connection device 4 of an upper die 6 are installed between the push plate 3 and the upper die 6, the same structure is also installed between the lower die 7 and the lower die base 2b, the elastic connection device 4 comprises a first elastic part 4a, a first limiting part 4b and a second limiting part 4c, the first elastic part 4a is sleeved on the guide post 2c, two ends of the first elastic part 4a are respectively abutted to the push plate 3 and the upper die 6, one ends of the first limiting part 4b and the second limiting part 4c are fixedly connected with the push plate 3, the other end of the first limiting part 4b is located between the push plate 3 and the upper die 6, the other end of the second limiting part 4c penetrates through the upper die 6 and extends to the lower part of the bottom surface of the upper die 6, and one end of the second limiting part 4c, which is close to the upper die 6, is provided with a first stop part 4c1 abutted to.

As shown in fig. 10, the first elastic member 4a is a spring, the first limiting member 4b is a sleeve, a top rod or a top block, the second limiting member 4c is an inner hexagonal bolt, a nut of the inner hexagonal bolt is a first stopping member 4c1, the upper die 6 is provided with a through hole through which a rod portion of the inner hexagonal bolt can pass but a nut portion of the inner hexagonal bolt cannot pass, and the first elastic member 4a is used for driving the push plate 3 and the upper die 6 to move away from each other; when the push plate 3 and the upper die 6 are close to each other, the top surface of the upper die 6 abuts against one end, away from the push plate 3, of the first limiting piece 4b to stop moving, the first limiting piece 4b is used for limiting the minimum distance between the push plate 3 and the upper die 6, when the push plate 3 and the upper die 6 are far from each other, the bottom surface of the upper die 6 abuts against one end, close to the upper die 6, of the second limiting piece 4c to stop moving, and the second limiting piece 4c is used for limiting the maximum distance between the push plate 3 and the upper die 6; similarly, the same mechanism is also installed between the lower die 7 and the lower die holder 2b, so that the lower die 7 and the lower die holder 2b can be close to and away from each other in a certain stroke, and the maximum distance is kept under the action of no external force, so that the flanging device 8 is immersed in the upper die 6 or the lower die 7 under the action of no external force; during stamping, the push plate 3, the upper die 6, the lower die 7 and the lower die holder 2b are close to each other by overcoming the resilience force of the first elastic piece 4a, and the flanging device 8 passes through the upper die 6 or the lower die 7 and abuts against the clamping piece 1 to complete flanging; after the punching is finished, the flanging device 8 is immersed into the upper die 6 or the lower die 7 again under the action of the resilience force of the first elastic piece 4 a.

The flanging device 8 comprises an inclined slide block 8a, a roller 8b, a wheel groove 8c and a folding line top block 8d, wherein the inclined slide block 8a is respectively installed in the upper die 6 and the lower die 7 in a tilting sliding mode, the folding line top block 8d is respectively and fixedly installed on one surface, facing the upper die 6, of the push plate 3 and one surface, facing the lower die 7, of the lower die seat 2b, the folding line top block 8d is located at the end point of the stroke of the inclined slide block 8a, the roller 8b is installed at one end, far away from the upper die 6 and between the lower die 7, of the inclined slide block 8a, the circumferential surface of the roller 8b is located on the outer side of the inclined slide block 8a, the wheel groove 8c is fixedly installed on the push plate 3 or the lower die seat 2b, the working direction of the wheel groove 8c is perpendicular to.

As shown in fig. 7, 9, 12, 15 and 16, a plurality of flanging devices 8 installed on the upper die 6 and the lower die 7 have the same structure, and only slightly differ in the orientation, inclination angle and size of the working end, inclined chutes for sliding inclined sliding blocks 8a are provided on the upper die 6 and the lower die 7, when the push plate 3 and the upper die 6 approach each other, the wheel groove 8c presses the roller 8b so that the roller 8b moves in position inside the wheel groove 8c, the roller 8b moves the oblique slider 8a in position, so that the plurality of inclined slide blocks 8a are respectively inclined to be close to the slide block first flanging 1f, the rebound piece first flanging 1g, the slide block second flanging 1h, the rebound piece second flanging 1i and the rebound piece third flanging 1j, therefore, a plurality of flanging processes are completed, and the folding line ejecting block 8d is used for abutting against the folding lines, so that the plurality of flanging on the clamping piece 1 can be folded at the positions where the folding lines are located.

The pressing and demolding device comprises a pressing and demolding device 9, the pressing and demolding device 9 comprises an ejector pin 9a, a second stop piece 9b, a third stop piece 9c and a second elastic piece 9d, the ejector pin 9a vertically penetrates through the push plate 3 and the upper die 6, the second stop piece 9b is arranged at the top end and the middle end of the ejector pin 9a, the third stop piece 9c is located on one side, away from the upper die 6, of the push plate 3, the second elastic piece 9d is located on one side, close to the push plate 3, of the upper die 6, the second elastic piece 9d is sleeved on the ejector pin 9a, and two ends of the second elastic piece 9d abut against the push plate 3 and the third stop piece 9c respectively.

As shown in fig. 12 and 13, the second elastic element 9d is a spring, the second elastic element 9d is used for driving the thimble 9a to pass through the upper die 6 and approach towards the lower die 7, the second stop 9b is used for limiting the maximum travel of the thimble 9a moving towards the lower die 7, the third stop 9c is used for moving along with the thimble 9a and compressing the second elastic element 9d or being driven by the second elastic element 9d, when the upper die 6 approaches the lower die 7, the thimble 9a abuts against the strip first, the thimble 9a is pressed against the strip by the resilience of the second elastic element 9d to prevent the strip from moving during the punching process, and after the punching process is completed, the resilience of the second elastic element 9d causes the thimble 9a to extend downward below the bottom surface of the upper die 6, so as to drive the strip embedded in the bottom surface of the upper die 6 to eject.

The utility model discloses a theory of operation:

the clamping piece 1 needs to go through six procedures in a stamping die, the stamping die processes the material belt through the six procedures, and the die can stamp seven gradually-formed clamping pieces 1 on the material belt at the same time; the first blanking station is used for blanking a front end outer edge 1a of the first clamping piece, a rear end outer edge 1b of the second clamping piece and a slide block pre-flanging opening 1 c; the second blanking station is used for blanking the inner edge 1d at the front end of the second clamping piece and the pre-flanging opening 1e of the springback piece of the third clamping piece; the first flanging station is used for turning over a first flanging 1f of the sliding block of the third clamping piece and a first flanging 1g of the rebound piece of the fourth clamping piece; the second flanging station is used for turning over a second flanging 1h of the slide block of the fifth clamping piece and a second flanging 1i of the rebound piece; the third flanging station is used for turning over a third flanging 1j of the resilient piece of the sixth clamping piece; the third blanking station is used for cutting the blanking part 1k between the sixth clamping piece and the seventh clamping piece, and separating the sixth clamping piece from the seventh clamping piece, so that the seventh clamping piece becomes a finished product which can be taken out of the production line, and then the worker takes out the seventh clamping piece and moves a subsequent clamping piece forward at the same time.

Claims (7)

1. The utility model provides a gradual stamping die of fastener of multi-functional electric power instrument, be applied to processing fastener (1), a serial communication port, including die carrier (2) and slidable mounting at inside last mould (6) of die carrier (2), bed die (7), go up mould (6), equal parallel arrangement of bed die (7) and arrange along stamping direction order, it is provided with the first blanking station of arranging along material direction of feed in proper order to go up between mould (6) and bed die (7), the second blanking station, first turn-ups station, second turn-ups station, third blanking station, it runs through mould (6) respectively to install a plurality of work ends on mould (6) and bed die (7) respectively, bed die (7) and extend to flanging device (8) between mould (6) and bed die (7).

2. The progressive stamping die for the clamping piece of the multifunctional electric instrument is characterized in that a first male die (6a), a second male die (6b) and a third male die (6c) which are sequentially arranged along the material feeding direction are arranged on the bottom surface of the upper die (6), and a first female die (7a), a second female die (7b) and a third female die (7c) which correspond to the first male die (6a), the second male die (6b) and the third male die (6c) one by one are arranged on the lower die (7).

3. The progressive stamping die for the snap-on part of the multifunctional electric instrument as recited in claim 1, wherein the top surface of the lower die (7) is provided with a stop baffle (7d) extending vertically upward and located at the front end of the third blanking station, one surface of the stop baffle (7d) facing the third blanking station is matched with the front end of the snap-on part (1), and the bottom surface of the upper die (6) is provided with a first avoiding opening (6d) for avoiding the stop baffle (7 d).

4. The progressive stamping die for the clamping piece of the multifunctional electric instrument as claimed in claim 1, wherein the die carrier (2) comprises an upper die holder (2a), a lower die holder (2b), a guide post (2c), the upper die holder (2a), a push plate (3), an upper die (6), a lower die (7) and the lower die holder (2b) which are all arranged in parallel and arranged in sequence along the stamping direction, the upper die holder (2a) and the lower die holder (2b) are fixedly connected through the guide post (2c), the push plate (3) is further arranged between the lower die holder (2b) and the guide post (2c), the push plate (3), the upper die (6) and the lower die (7) are all connected with the guide post (2c) in a sliding manner, a plurality of flanging devices (8) are respectively installed on the lower die holder (2b) and the push plate (3), and the push plate (3) is elastically connected with the upper die (6), the lower die (7) is elastically connected with the lower die holder (2 b).

5. The progressive stamping die for the fastener of the multifunctional electric instrument as claimed in claim 4, wherein an elastic connecting device (4) elastically connecting the push plate (3) and the upper die (6) is installed between the push plate (3) and the upper die (6), the same structure is also installed between the lower die (7) and the lower die holder (2b), the elastic connecting device (4) comprises a first elastic member (4a), a first limiting member (4b) and a second limiting member (4c), the first elastic member (4a) is sleeved on the guide post (2c), two ends of the first elastic member (4a) are respectively abutted against the push plate (3) and the upper die (6), one ends of the first limiting member (4b) and the second limiting member (4c) are both fixedly connected with the push plate (3), the other end of the first limiting member (4b) is located between the push plate (3) and the upper die (6), the other end of the second limiting piece (4c) penetrates through the upper die (6) and extends to the position below the bottom surface of the upper die (6), and a first stop piece (4c1) abutting against the bottom surface of the upper die (6) is arranged at one end, close to the upper die (6), of the second limiting piece (4 c).

6. The progressive stamping die for the clamping piece of the multifunctional electric instrument is characterized in that the flanging device (8) comprises an inclined slide block (8a), a roller (8b), a wheel groove (8c) and a flanging line top block (8d), the inclined slide block (8a) is respectively and obliquely and slidably arranged in the upper die (6) and the lower die (7), the flanging line top block (8d) is respectively and fixedly arranged on one surface of the push plate (3) facing the upper die (6) and one surface of the lower die holder (2b) facing the lower die (7), the flanging line top block (8d) is positioned at the end point of the stroke of the inclined slide block (8a), the roller (8b) is arranged at one end of the inclined slide block (8a) far away from the upper die (6) and the lower die (7), the circumferential surface of the roller (8b) is positioned on the outer side of the inclined slide block (8a), the wheel groove (8c) is fixedly arranged on the push plate (3) or the lower die holder (2b), the working direction of the wheel groove (8c) is vertical to the stamping direction, and the roller (8b) can be arranged in the wheel groove (8c) in a rolling way.

7. The multi-functional electric power meter's snap fastener progressive stamping die of claim 4, the die pressing and demolding device is characterized by further comprising a pressing and demolding device (9), wherein the pressing and demolding device (9) comprises an ejector pin (9a), a second stop piece (9b), a third stop piece (9c) and a second elastic piece (9d), the ejector pin (9a) vertically penetrates through the ejector plate (3) and the upper die (6), the second stop piece (9b) is arranged at the top end and the middle end of the ejector pin (9a), the third stop piece (9c) is located on one side, far away from the upper die (6), of the ejector plate (3), the second elastic piece (9d) is located on one side, close to the ejector plate (3), of the upper die (6), the second elastic piece (9d) is sleeved on the ejector pin (9a), and two ends of the second elastic piece (9d) abut against the ejector plate (3) and the third stop piece (9c) respectively.

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