CN113441595B

CN113441595B - Terminal punching machine

Info

Publication number: CN113441595B
Application number: CN202111017444.2A
Authority: CN
Inventors: 刘君
Original assignee: Xuzhou Lingjun Automation Equipment Co ltd
Current assignee: Xuzhou Lingjun Automation Equipment Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2021-11-02
Anticipated expiration: 2041-09-01
Also published as: CN113441595A

Abstract

The invention relates to the technical field of terminal processing, in particular to a terminal punching machine, which comprises a punching execution device for executing punching and a terminal punching die assembled on the punching execution device; the terminal stamping die consists of a lower die mechanism and an upper die mechanism which are matched with each other; the punching die device specially used for producing the wiring terminal products with the specific structures is designed in the punching machine, the material belt can be directly conveyed for continuous punching forming, the rapid and batch processing and forming functions can be realized, the production efficiency is greatly improved, and the production cost is saved.

Description

Terminal punching machine

Technical Field

The invention relates to the technical field of terminal processing, and particularly provides a terminal punching machine.

Background

The wiring terminal is an accessory product for realizing electrical connection, and is industrially divided into the category of connectors; with higher and higher industrial automation degree and stricter and more precise industrial control requirements, the use amount of the wiring terminal gradually rises; with the development of the electronic industry, the use range of the connecting terminal is wider and wider, and the types of the connecting terminal are more and more.

The connecting terminal is mainly used as a metal sheet sealed in an insulating material, the connecting terminal has various types and structures, as shown in fig. 11, the connecting terminal is a grounding terminal, also called a grounding bar, and is one type of the connecting terminal, as shown in the figure, the connecting terminal is a bridge-shaped structure with two bent ends, the existing processing mode is generally formed and processed manually in a step-by-step processing and forming mode, the processing efficiency is low, and manpower is consumed, so that how to realize the technical problems of rapidity, batch production and automatic production of the grounding terminal of the structure are needed to be solved.

Disclosure of Invention

In order to solve the above problems, the present invention provides a terminal punch for solving the problems mentioned in the above background art.

In order to achieve the above purpose, the invention is specifically realized by adopting the following technical scheme: a terminal punching machine includes a punch actuator for performing punching and a terminal punching die fitted to the punch actuator; the terminal stamping die is composed of a lower die mechanism and an upper die mechanism which are matched with each other.

The lower die mechanism comprises a lower die base plate, and a first concave module, two trimming concave dies, a positioning block, two second concave modules, a third concave module, a lower bending block and a slitting concave die are sequentially and fixedly arranged on the upper end surface of the lower die base plate along the front-back direction; the first female die block comprises a first female die seat fixedly arranged on the lower die seat plate and three first female dies embedded and fixed on the first female die seat, the three first female dies are uniformly distributed along the left-right direction, and the left-right direction is vertical to the front-back direction; the first female die block is arranged in the middle relative to the two trimming female dies, the two second female die blocks are arranged in a mirror symmetry mode, the two second female die blocks are arranged in the left-right direction at equal intervals relative to the first female die block, and each second female die block comprises a second female die holder fixedly arranged on the lower die base plate and a second female die embedded and fixed on the second female die holder; the die hole of the first female die and the die hole of the second female die are both circular; the third female die block comprises a third female die seat fixedly arranged on the lower die seat plate and two third female dies embedded and fixed on the third female die seat, the third female die is in a rounded rectangular shape, the two third female dies in the left-right direction are distributed on two sides of the two second female dies, and the two third female dies and the adjacent second female dies are arranged at equal intervals; the lower bending block comprises a flattening part positioned in the center and bending parts which are symmetrically distributed on two sides of the flattening part in a mirror image mode, and the distribution directions of the two bending parts are positioned in the left-right direction; the cutting female die is arranged in the middle relative to the two trimming female dies in the left-right direction, and the female die holes of the cutting female die and the female die holes of the trimming female dies are both in a long rectangular shape and are equal in width; three circular positioning grooves are formed in the upper end face of the positioning block, the upper end face of the third concave die holder and the upper end face of the flattening part, the three positioning grooves and the three first concave dies are arranged in a one-to-one opposite mode in the front-to-back direction, and the diameters of the positioning grooves are equal to those of the first concave dies; the lower die mechanism further comprises two limiting guide assemblies fixed on the upper end face of the lower die base plate, and the two limiting guide assemblies are arranged in a mirror symmetry mode in the left-right direction.

The upper die mechanism comprises an upper die base plate, and three first male dies, two trimming male dies, two second male dies, two third male dies, a slitting male die and two upper bending blocks are fixedly arranged on the lower end face of the upper die base plate; the three first male dies and the three first female dies are arranged in a one-to-one matched mode, the two trimming male dies and the two trimming female dies are arranged in a one-to-one matched mode, the two second male dies and the two second female dies are arranged in a one-to-one matched mode, the two third male dies and the two third female dies are arranged in a one-to-one matched mode, the two upper bending blocks and the two bending parts are arranged in a one-to-one matched mode, and the cutting male dies and the cutting female dies are arranged in a corresponding matched mode; and the upper die base plate is also provided with a material pressing mechanism for pressing the material belt.

Preferably, the material pressing mechanism comprises a material pressing plate located below the upper die base plate, two columns of guide pillars are arranged on the top end face of the material pressing plate, each column of guide pillars comprises a plurality of guide pillars two which are uniformly distributed along the front and back direction, the guide pillars two are vertically and slidably mounted on the upper die base plate, a pressure spring is sleeved on each guide pillar two, two ends of each pressure spring are fixedly connected to the bottom end face of the upper die base plate and the top end face of the material pressing plate, and the male die, the trimming male die, the male die two, the male die three, the upper bending block and the slitting male die can penetrate out of the material pressing plate.

Preferably, spacing direction subassembly includes fixed mounting and is in bed hedgehopping piece on the lower mould bedplate up end, blend stop and stopper are installed on the top of bed hedgehopping piece, the blend stop include the fixed part and with fixed part integrated into one piece's the side fender portion that is used for restricting the material area, be provided with two waist type holes on the fixed part, the fixed part is two waist type hole department pass through the screw with bed hedgehopping piece fixed connection, fixed mounting has No. two stoppers on the up end of fixed part, the up end of No. two stoppers with the up end of stopper flushes.

Preferably, the lower end surface of the pressure plate comprises a convex end positioned in the middle and concave ends distributed on two sides of the convex end, three groups of positioning protrusions which are arranged in one-to-one correspondence with the three groups of positioning grooves in the lower die mechanism are arranged on the convex end, and the front end of each positioning protrusion is hemispherical; the concave surface end is matched with the first limiting block and the second limiting block.

Preferably, the side blocking part is provided with a first notch for avoiding the trimming convex die and a second notch for avoiding the third convex die.

Preferably, four first guide pillars are fixedly mounted on the upper end face of the lower die base plate, the four first guide pillars are distributed on the rectangular top point, and four guide sleeves which are in one-to-one corresponding sliding fit with the four first guide pillars are arranged on the upper die base plate.

Preferably, blanking holes corresponding to the first female die, the trimming female die, the second female die, the third female die and the slitting female die are formed in the lower die seat plate; and a slope groove is arranged on the upper end surface of the lower die seat plate and close to the side edge of the slitting concave die.

Compared with the prior art, the technical scheme has the following advantages or beneficial effects: 1. the invention provides a terminal punching machine, which is designed with a punching die device special for producing a wiring terminal product with a specific structure, can directly convey a material belt to perform continuous punching forming, can realize the rapid and batch processing and forming functions, greatly improves the production efficiency and saves the production cost.

2. The invention provides a terminal punching machine, wherein two groups of limiting guide assemblies are arranged in a lower die mechanism, so that on one hand, conveying guide can be provided for material belt conveying, and on the other hand, the limiting function of a material pressing plate in an upper die mechanism can be realized.

3. The invention provides a terminal punching machine, wherein a set of positioning grooves are respectively arranged on a positioning block, a third concave die holder and a lower bending block, and three sets of positioning bulges are correspondingly arranged on the convex surface end of a material pressing plate one by one, so that the positioning and automatic deviation rectifying functions of a material belt can be realized by inserting the positioning bulges into the positioning grooves at corresponding positions in the punching forming process, and in addition, the situation of dislocation of the material belt can be effectively avoided by pre-pressing the convex surface end to the material belt.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings; the drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of a terminal punch according to the present invention from a single perspective.

Fig. 2 is a schematic perspective view of a terminal punch according to another aspect of the present invention.

Fig. 3 is a schematic perspective view of the terminal press mold in a mold clamping state.

Fig. 4 is a front view of the terminal press mold in a mold clamped state.

Fig. 5 is a schematic perspective view of the lower mold mechanism.

Fig. 6 is a perspective view of the lower mold base plate.

Fig. 7 is a plan view of the lower die mechanism.

Fig. 8 is a schematic perspective view of the upper die mechanism.

Fig. 9 is a bottom view of the upper die mechanism.

Fig. 10 is a schematic perspective view of an upper die mechanism without the swaging mechanism assembled.

Fig. 11 is a schematic structural view of a terminal product stamped and formed by the terminal stamping machine provided by the invention.

In the figure: 1. a press execution device; 11. a frame; 111. a stamping platform; 112. a top plate; 12. sliding the guide post; 13. punching an oil cylinder; 14. a stroke plate; 2. a terminal stamping die; 3. a lower die mechanism; 31. a lower die base plate; 311. a first guide post; 312. a blanking hole; 313. a ramp groove; 314. a lower foot pad; 32. a first female die block; 321. a first concave die holder; 322. a first female die; 33. trimming the female die; 34. positioning blocks; 35. a second female module; 351. a second concave die holder; 352. a second female die; 36. a third female module; 361. a third concave die holder; 362. a third female die; 37. a lower bending block; 371. a flattening section; 372. a bending part; 38. cutting the female die; 39. a positioning groove; 4. a limiting guide component; 41. a block for raising; 42. blocking strips; 421. a fixed part; 4211. a kidney-shaped hole; 422. a side stop portion; 4221. a first notch; 4222. a second gap; 43. a first limiting block; 44. a second limiting block; 5. an upper die mechanism; 51. an upper die base plate; 511. a guide sleeve; 512. a foot pad is arranged; 52. a first male die; 53. trimming the male die; 54. a second male die; 55. a third male die; 56. an upper bending block; 57. slitting a male die; 581. a material pressing plate; 5811. a convex end; 5812. a concave end; 5813. positioning the projection; 582. a second guide pillar; 583. and (5) pressing a spring.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

As shown in fig. 1 and 2, a terminal press machine includes a press actuator 1 for performing a press and a terminal press die 2 fitted to the press actuator 1; the terminal press die 2 is composed of a lower die mechanism 3 and an upper die mechanism 5 which are fitted to each other.

As shown in fig. 3, 4, 5 and 7, the lower die mechanism 3 includes a lower die base plate 31, four first guide pillars 311 are fixedly mounted on the upper end surface of the lower die base plate 31, the four first guide pillars 311 are distributed in a rectangular vertex, and a first die block 32, two trimming die blocks 33, a positioning block 34, two second die blocks 35, a third die block 36, a lower bending block 37 and a splitting die 38 are sequentially distributed and fixedly mounted on the upper end surface of the lower die base plate 31 along the front-rear direction; the first female die block 32 comprises a first female die holder 321 fixedly mounted on the lower die holder plate 31 through screws and three first female dies 322 embedded and fixed on the first female die holder 321, the end surfaces of the first female dies 322 are flush with the end surfaces of the first female die holder 321, the three first female dies 322 are uniformly distributed along the left-right direction, and the left-right direction is vertical to the front-back direction; the first female die block 32 is arranged in the center relative to the two trimming female dies 33, the two second female die blocks 35 are arranged in a mirror symmetry mode, the two second female die blocks 35 are arranged in the left-right direction at equal intervals relative to the first female die block 32, each second female die block 35 comprises a second female die holder 351 fixedly installed on the lower die holder plate 31 through screws and a second female die 352 embedded and fixed on the second female die holder 351, and the end face of the second female die 352 is flush with the end face of the second female die holder 351; the die hole of the first female die 322 and the die hole of the second female die 352 are both circular; the third female die block 36 includes a third female die holder 361 fixedly mounted on the lower die holder plate 31 by screws and two third female dies 362 embedded and fixed on the third female die holder 361, the third female dies 362 are in a rounded rectangular shape, the two third female dies 362 located in the left-right direction are distributed on two sides of the two second female dies 352, and the two third female dies 362 and the adjacent second female dies 352 are arranged at equal intervals; the lower bending block 37 comprises a flattening part 371 positioned in the center and bending parts 372 distributed on two sides of the flattening part 371 in a mirror symmetry manner, and the distribution directions of the two bending parts 372 are positioned in the left-right direction; in the left-right direction, the cutting female die 38 is arranged in the center of the two trimming female dies 33, and the female die holes of the cutting female die 38 and the female die holes of the trimming female dies 33 are both rectangular and equal in width; three circular positioning grooves 39 are formed in the upper end face of the positioning block 34, the upper end face of the third die holder 361 and the upper end face of the flattening portion 371, the three positioning grooves 39 and the three first dies 322 are arranged in a one-to-one mode in the front-back direction, the diameters of the positioning grooves 39 are equal to the diameter of the first dies 322, and after punching forming of small round holes is completed at the positions of the first dies 322, material belt positioning is conducted by means of the small round holes.

As shown in fig. 5 and 7, the lower die mechanism 3 further includes two limiting guide assemblies 4 fixed on the upper end surface of the lower die base plate 31, and the two limiting guide assemblies 4 are arranged in mirror symmetry along the left-right direction; the limiting and guiding assembly 4 comprises a heightening block 41 fixedly mounted on the upper end face of the lower die seat plate 31 through screws, a barrier strip 42 and a first limiting block 43 are mounted at the top end of the heightening block 41, the barrier strip 42 comprises a fixing portion 421 and a side barrier portion 422 which is integrally formed with the fixing portion 421 and used for limiting a material belt, two waist-shaped holes 4211 are formed in the fixing portion 421, the fixing portion 421 is fixedly connected with the heightening block 41 through screws at the two waist-shaped holes 4211, a second limiting block 44 is welded on the upper end face of the fixing portion 421, and the upper end face of the second limiting block 44 is flush with the upper end face of the first limiting block 43; the side stop 422 is provided with a first notch 4221 for avoiding the trimming punch 53 and a second notch 4222 for avoiding the third punch 55.

The limiting and guiding component 4 has two functions, namely, one function is that a right-angle notch for feeding and positioning is arranged on one side, close to the lower die seat plate 31, of the side blocking part 422, the right-angle notch is visible in the attached drawing but not marked, in the process of stamping forming, a material belt is limited between the right-angle notches of the two side blocking parts 422 to conduct guiding and feeding, in order to ensure the guiding effectiveness, and in order that the material belt cannot be clamped by the sides to ensure the feeding smoothness, the screws can be loosened, and the blocking strips 42 are finely adjusted by means of the arranged waist-shaped holes 4211, so that the material belt can be guided and fed in the middle when passing through the two blocking strips 42; effect two, can carry on spacingly to pressing flitch 581 when the punching press through the stopper 43 that sets up and No. two stoppers 44 for pressing flitch 581 when the downward punching press of upper die mechanism 5, final concave surface end 5812 will contact with stopper 43 and No. two stoppers 44, and be located when this state, the clearance between the up end of convex surface end 5811 and a die holder 321 is just the thickness of material area, and during the actual punching press, convex surface end 5811 will the concora crush on the material area promptly.

As shown in fig. 8, 9 and 10, the upper die mechanism 5 includes an upper die base plate 51, and the upper die base plate 51 is provided with four guide sleeves 511 in one-to-one sliding fit with four first guide posts 311; the lower end face of the upper die base plate 51 is fixedly provided with three first male dies 52, two trimming male dies 53, two second male dies 54, two third male dies 55, a slitting male die 57 and two upper bending blocks 56 through screw locking; the three first male dies 52 are matched with the three first female dies 322 in a one-to-one correspondence manner, the two trimming male dies 53 are matched with the two trimming female dies 33 in a one-to-one correspondence manner, the two second male dies 54 are matched with the two second female dies 352 in a one-to-one correspondence manner, the two third male dies 55 are matched with the two third female dies 362 in a one-to-one correspondence manner, the two upper bending blocks 56 are matched with the two bending parts 372 in a one-to-one correspondence manner, and the slitting male dies 57 are matched with the slitting female dies 38 in a corresponding manner.

The terminal stamping die 2 is a continuous stamping die for producing a terminal product shown in fig. 11, intermittent feeding is carried out through a material belt feeding machine in the stamping process, a first concave die block 32, a trimming concave die 33, a second concave die block 35, a third concave die block 36, a lower bending block 37 and a slitting concave die 38 in a lower die mechanism 3 are sequentially arranged according to a continuous stamping processing process and an intermittent feeding stroke, wherein the intermittent feeding stroke is equal to the distance between a group of positioning grooves 39 on the third concave die 362 and a group of positioning grooves 39 on the lower bending block 37, the material belt can be intermittently fed through an external feeding machine in the stamping processing process, the first concave die 322 and a first convex die 52 are matched for stamping to form three small round holes in the middle of the terminal product, and the slitting concave die 38 and the slitting convex die 57 are matched for stamping to form two gaps between two adjacent terminal products in the material belt, the formation of the slitting notch is to bend in the follow-up punching press, the cooperation of No. two die 352 and No. two terrace die 54 is used for two big round holes in the punching press formation terminal product, the cooperation of No. three die 362 and No. three terrace die 55 is used for two fillet rectangular holes in the punching press formation terminal product, the cooperation of the portion of bending 372 and the last piece of bending 56 is used for the punching press to form the position of bending in the terminal product, the cooperation of slitting die 38 and slitting terrace die 57 is used for the blanking separation of the terminal product after the completion of stamping forming in the material area.

As shown in fig. 3, 4, 8 and 9, the upper die plate 51 is further provided with a pressing mechanism for pressing the tape. The material pressing mechanism comprises a material pressing plate 581 positioned below the upper die base plate 51, two rows of second guide posts 582 are arranged on the top end surface of the material pressing plate 581, each row of second guide posts 582 comprises five second guide posts 582 uniformly distributed in the front-back direction, the second guide posts 582 are vertically and slidably mounted on the upper die base plate 51, a pressure spring 583 is sleeved on each second guide post 582, two ends of each pressure spring 583 are welded on the bottom end surface of the upper die base plate 51 and the top end surface of the material pressing plate 581, and the first male die 52, the trimming male die 53, the second male die 54, the third male die 55, the upper bending block 56 and the slitting male die 57 can penetrate out of the material pressing plate 581; the lower end surface of the pressure plate 581 comprises a convex end 5811 positioned in the middle and concave ends 5812 distributed on two sides of the convex end 5811, three sets of positioning protrusions 5813 which are arranged in one-to-one correspondence with the three sets of positioning grooves 39 in the lower die mechanism 3 are arranged on the convex end 5811, and the front end of each positioning protrusion 5813 is hemispherical; concave end 5812 is disposed in cooperation with first stopper 43 and second stopper 44.

During actual punching process, under the drive of punching press hydro-cylinder 13, whole upper die mechanism 5 will punch downwards, during the punching press downwards, pressure flitch 581 will compress tightly in advance on the material area, and three group location archs 5813 will insert three group positioning groove 39 with the one-to-one, after at least a set of stamping forming's small circle hole location arch 5813 passed in the material area, location arch 5813 played the effect of location to the material area, and convex surface end 5811 compressed tightly the material area and played the effect that the material area compressed tightly the location equally, thereby can avoid the situation that the material area punching press misplaced.

As shown in fig. 1 and 2, the punching execution device 1 includes a frame 11, a punching platform 111 and a top plate 112 are respectively arranged at the middle part and the top end of the frame 11, four sliding guide pillars 12 are vertically arranged between the punching platform 111 and the top plate 112, a punching oil cylinder 13 is vertically and fixedly mounted at the top end of the top plate 112 through screws, a stroke plate 14 is fixedly connected to an output end of the punching oil cylinder 13, and the stroke plate 14 is vertically and slidably mounted on the four sliding guide pillars 12; the bottom end face of the lower die base plate 31 is provided with a plurality of lower pads 314, the lower die mechanism 3 is horizontally and fixedly installed on the upper end face of the stamping platform 111 through the plurality of lower pads 314, the top end face of the upper die base plate 51 is provided with a plurality of upper pads 512, and the upper die mechanism 5 is horizontally and fixedly installed on the bottom end face of the stroke plate 14 through the plurality of upper pads 512.

During stamping forming, place the material area between two side fender portions 422, drive the material area through outside autoloading frame and realize intermittent type transport's function, stamping actuating device 1 will be in operating condition, when the material area is suspended to be carried, stamping actuating device 1 will drive the relative lower mould mechanism 3 of upper die mechanism 5 and accomplish a punching press, and punching press hydro-cylinder 13 drives upper die mechanism 5 downstream and upwards resumes to initial height and be a punching press stroke, the material area will accomplish continuous stamping forming in the punching machine, specifically, will accomplish the stamping forming of little round hole in proper order in the pay-off direction, cut the blanking of breach between adjacent terminal, the stamping forming of big round hole, the stamping forming of fillet rectangular hole, the stamping forming at the position of bending and the blanking separation after the shaping.

As shown in fig. 5 and 6, the lower die base plate 31 is provided with blanking holes 312 corresponding to the first concave die 322, the trimming concave die 33, the second concave die 352, the third concave die 362 and the splitting concave die 38; in the stamping forming process, waste materials generated after the material belt is blanked leak out of the blanking hole 312; a slope groove 313 is arranged on the upper end surface of the lower die seat plate 31 at a position close to the side edge of the slitting concave die 38, and a finished product of a terminal product after blanking and slitting is slid down along the slope groove 313.

Those skilled in the art should understand that those skilled in the art can implement the modifications in combination with the prior art and the above embodiments, and detailed descriptions thereof are omitted; such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention; it is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications, or modify equivalent embodiments, without departing from the technical solution of the invention, without affecting the essence of the invention; therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A terminal punch characterized by: the terminal stamping die comprises a stamping execution device (1) for executing stamping and a terminal stamping die (2) assembled on the stamping execution device (1); the terminal stamping die (2) is composed of a lower die mechanism (3) and an upper die mechanism (5) which are matched with each other; wherein: the lower die mechanism (3) comprises a lower die base plate (31), and a first concave module (32), two trimming female dies (33), a positioning block (34), two second concave modules (35), a third concave module (36), a lower bending block (37) and a slitting female die (38) are sequentially and fixedly arranged on the upper end surface of the lower die base plate (31) along the front-rear direction; the first concave module (32) comprises a first concave die holder (321) fixedly arranged on the lower die base plate (31) and three first concave dies (322) embedded and fixed on the first concave die holder (321), the three first concave dies (322) are uniformly distributed along the left-right direction, and the left-right direction is vertical to the front-back direction; the first concave module (32) is arranged in the center relative to the two trimming concave dies (33), the two second concave modules (35) are arranged in a mirror symmetry mode, the two second concave modules (35) are arranged in the left-right direction at equal intervals relative to the first concave module (32), and each second concave module (35) comprises a second concave die holder (351) fixedly installed on the lower die base plate (31) and a second concave die (352) embedded and fixed on the second concave die holder (351); the die hole of the first female die (322) and the die hole of the second female die (352) are both circular; the third concave module (36) comprises a third concave die holder (361) fixedly installed on the lower die seat plate (31) and two third concave dies (362) embedded and fixed on the third concave die holder (361), the third concave dies (362) are in a rounded rectangular shape, the two third concave dies (362) positioned on the left and right directions are distributed on two sides of the two second concave dies (352), and the two third concave dies (362) and the adjacent second concave dies (352) are arranged at equal intervals; the lower bending block (37) comprises a flattening part (371) positioned in the center and bending parts (372) distributed on two sides of the flattening part (371) in a mirror symmetry mode, and the distribution directions of the two bending parts (372) are positioned in the left-right direction; the cutting female die (38) is arranged in the center relative to the two trimming female dies (33) in the left-right direction, and female die holes of the cutting female die (38) and female die holes of the trimming female dies (33) are both long-rectangular and equal in width; the lower die mechanism (3) further comprises two limiting guide assemblies (4) fixed on the upper end face of the lower die base plate (31), and the two limiting guide assemblies (4) are arranged in a mirror symmetry mode along the left-right direction;

the upper die mechanism (5) comprises an upper die base plate (51), and three first male dies (52), two trimming male dies (53), two second male dies (54), two third male dies (55), a slitting male die (57) and two upper bending blocks (56) are fixedly arranged on the lower end face of the upper die base plate (51); the three first male dies (52) and the three first female dies (322) are arranged in a one-to-one corresponding matched mode, the two trimming male dies (53) and the two trimming female dies (33) are arranged in a one-to-one corresponding matched mode, the two second male dies (54) and the two second female dies (352) are arranged in a one-to-one corresponding matched mode, the two third male dies (55) and the two third female dies (362) are arranged in a one-to-one corresponding matched mode, the two upper bending blocks (56) and the two bending parts (372) are arranged in a one-to-one corresponding matched mode, and the slitting male dies (57) and the slitting female dies (38) are arranged in a corresponding matched mode; and the upper die base plate (51) is also provided with a material pressing mechanism for pressing the material belt.

2. A terminal punch according to claim 1, wherein: the material pressing mechanism comprises a material pressing plate (581) located below an upper die base plate (51), two rows of second guide pillars (582) are arranged on the top end face of the material pressing plate (581), each row of second guide pillars (582) comprises a plurality of second guide pillars (582) uniformly distributed in the front-back direction, the second guide pillars (582) are vertically and slidably mounted on the upper die base plate (51), a pressure spring (583) is sleeved on each second guide pillar (582), two ends of the pressure spring (583) are fixedly connected to the bottom end face of the upper die base plate (51) and the top end face of the material pressing plate (581), and the first male die (52), the trimming male die (53), the second male die (54), the third male die (55), the upper bending block (56) and the slitting male die (57) can penetrate out of the material pressing plate (581).

3. A terminal punch according to claim 2, wherein: spacing direction subassembly (4) are including fixed mounting lower mould bedplate (31) up end on bed hedgehopping piece (41), stop strip (42) and stopper (43) are installed on the top of bed hedgehopping piece (41), stop strip (42) including fixed part (421) and with fixed part (421) integrated into one piece be used for restricting side fender portion (422) in material area, be provided with two waist type hole (4211) on fixed part (421), fixed part (421) are two waist type hole (4211) locate through the screw with bed hedgehopping piece (41) fixed connection, fixed mounting has No. two stopper (44) on the up end of fixed part (421), the up end of No. two stopper (44) with the up end of a stopper (43) flushes.

4. A terminal punch according to claim 3, wherein: on the up end of locating piece (34), on No. three die holder (361) up end and all be provided with three circular shape positioning groove (39) on the up end of flattening portion (371), on lieing in the front and back direction, it is three positioning groove (39) and three No. one die (322) one-to-one sets up, just positioning groove (39) the diameter with the diameter of a die (322) equals.

5. The terminal punch according to claim 4, wherein: the lower end surface of the pressure plate (581) comprises a convex surface end (5811) positioned in the middle and concave surface ends (5812) distributed on two sides of the convex surface end (5811), three groups of positioning protrusions (5813) which are arranged in one-to-one correspondence with the three groups of positioning grooves (39) in the lower die mechanism (3) are arranged on the convex surface end (5811), and the front end of each positioning protrusion (5813) is hemispherical; the concave surface end (5812) is matched with the first limiting block (43) and the second limiting block (44).

6. A terminal punch according to claim 3, wherein: and a first notch (4221) used for avoiding the trimming male die (53) and a second notch (4222) used for avoiding the third male die (55) are formed in the side blocking part (422).

7. A terminal punch according to claim 1, wherein: four first guide posts (311) are fixedly mounted on the upper end face of the lower die base plate (31), the four first guide posts (311) are distributed on the rectangular top point, and four guide sleeves (511) which are in one-to-one corresponding sliding fit with the four first guide posts (311) are arranged on the upper die base plate (51).

8. A terminal punch according to claim 1, wherein: blanking holes (312) corresponding to the first concave die (322), the trimming concave die (33), the second concave die (352), the third concave die (362) and the slitting concave die (38) are formed in the lower die seat plate (31); and a slope groove (313) is arranged on the upper end surface of the lower die seat plate (31) at the side position close to the slitting concave die (38).