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CN-114749547-B - Spring piece cutting die

CN114749547BCN 114749547 BCN114749547 BCN 114749547BCN-114749547-B

Abstract

The invention discloses a spring piece cutting die which comprises a mounting plate, wherein a supporting plate and a deck are sequentially arranged below the mounting plate, the supporting plate and the deck can move up and down relative to the mounting plate, an upper knife edge is arranged in the middle of the mounting plate, a knife holder extending upwards is arranged in the middle of the supporting plate, a punching knife extending upwards is arranged in the middle of the deck, the width of the top surface of the knife holder is larger than that of the upper knife edge, a channel extending up and down is arranged in the knife holder, the top end of the punching knife is inserted into the channel upwards, the width of the top surface of the punching knife is smaller than that of the upper knife edge, and a plurality of steps which are sequentially lifted from left to right are arranged on the top surface of the punching knife. The invention has reasonable structural design, and the top surface of the punching cutter is provided with a plurality of steps which are sequentially lifted from left to right, so that the handle control capability of the cutting quantity of the elastic sheets is greatly improved, and the waste of the elastic sheets is reduced.

Inventors

  • LIU YONGLIN
  • MA JIANHE
  • GONG JIANTAO
  • LIU ZHIQI
  • Wen Fuzhao

Assignees

  • 惠州市秦汉科技有限公司

Dates

Publication Date
20260505
Application Date
20220302

Claims (8)

  1. 1. A spring piece cutting die comprises a mounting plate (1) and is characterized in that a supporting plate (2) and a deck (3) are sequentially arranged below the mounting plate (1), the supporting plate (2) and the deck (3) can move up and down relative to the mounting plate (1), an upper knife edge (401) is arranged in the middle of the mounting plate (1), a knife holder (5) extending upwards is arranged in the middle of the supporting plate (2), a punch knife (6) extending upwards is arranged in the middle of the deck (3), the width of the top surface of the knife holder (5) is larger than the width of the upper knife edge (401), a channel (501) extending up and down is formed in the knife holder (5), the top end of the punch knife (6) is inserted into the channel (501) upwards, the width of the top surface of the punch knife (6) is smaller than the width of the upper knife edge (401), and a plurality of steps (601) which are sequentially lifted from left to right are arranged on the top surface of the punch knife (6); A lifting floating plate (7) is arranged between the mounting plate (1) and the supporting plate (2), the lifting floating plate (7) can move up and down relative to the mounting plate (1), a through hole (701) extending up and down is arranged in the middle of the lifting floating plate (7), the top end of the tool apron (5) upwards passes through the through hole (701), a precutting groove (101) extending back and forth is arranged on the bottom surface of the mounting plate (1), and the precutting groove (101) is arranged below the upper tool edge (401); The lifting device is characterized in that a first limiting column extending downwards is arranged at the bottom edge of the mounting plate (1), first limiting holes are respectively formed in the edges of the lifting plate (7) and the supporting plate (2), the bottom ends of the first limiting columns penetrate through the lifting plate (7) downwards in sequence, the bottom ends of the supporting plate (2) are connected with a first limiting ring after passing through the first limiting holes of the supporting plate, the straight outer diameter of the first limiting ring is larger than the diameter of the first limiting holes, a second limiting column (11) extending downwards is arranged at the bottom edge of the supporting plate (2), a second limiting hole is formed in the edge of the deck (3), the second limiting column (11) penetrates through the second limiting holes downwards and then is connected with a second limiting ring (12), and the outer diameter of the second limiting ring (12) is larger than the inner diameter of the second limiting holes.
  2. 2. The elastic sheet cutting die is characterized in that a plurality of guide posts (8) extending upwards are arranged on the edge of the deck (3), a plurality of guide holes (9) are respectively formed in the edges of the supporting plate (2), the lifting plate (7) and the mounting plate (1), the top ends of the guide posts (8) sequentially penetrate through the supporting plate (2), the lifting plate (7) and the guide holes (9) of the mounting plate (1) upwards, a plurality of height limiting rings (10) are respectively formed in the edges of the top surfaces of the deck (3) and the supporting plate (2), and the top ends of the guide posts (8) sequentially penetrate through the deck (3) and the height limiting rings (10) of the supporting plate (2) upwards.
  3. 3. The elastic sheet cutting die is characterized in that a plurality of movable cavities (103) are arranged in the mounting plate (1), the plurality of movable cavities (103) are respectively arranged on two sides of the upper knife edge (401), bottom holes (104) are formed in the bottoms of the movable cavities (103), third springs are arranged on the tops of the movable cavities (103), floating pins (20) are arranged in the movable cavities (103), the heads of the floating pins (20) are larger than the bottom holes (104), the rod parts of the floating pins (20) penetrate downwards through the bottom holes (104) to be connected with the lifting floating plates (7), the heads of the floating pins (20) are connected with the third springs, annular grooves (2001) are formed in the side faces of the rod parts of the floating pins (20), and the annular grooves (2001) are used for placing material strips (18).
  4. 4. A sheet metal cutting die according to any one of claims 1 to 3, characterized in that a first spring (13) is arranged between the lifting plate (7) and the pallet (2), a second spring (14) is arranged between the pallet (2) and the deck (3), and the maximum elastic force which can be generated between the lifting plate (7) and the pallet (2) is smaller than the maximum elastic force which can be generated between the pallet (2) and the deck (3).
  5. 5. A spring cutting die as set forth in any one of claims 1 to 3, wherein a plurality of positioning pins (15) protrude from the edge of the top surface of the tool apron (5), a plurality of positioning holes (402) are provided on the edge of the upper knife edge (401), and the positioning pins (15) are in positioning fit with the positioning holes (402).
  6. 6. The elastic sheet cutting die as set forth in claim 5, wherein a first mounting hole extending downwards is formed in the middle of the top surface of the supporting plate (2), a second mounting hole extending upwards is formed in the middle of the bottom surface of the supporting plate (2), the first mounting hole is formed in the top end of the second mounting hole, the bottom end of the tool apron (5) is mounted in the second mounting hole, the top end of the tool apron (5) is mounted in the first mounting hole, the width of the bottom surface of the tool apron (5) is larger than that of the first mounting hole, and an anti-falling plate (16) is detachably mounted at the bottom of the supporting plate (2).
  7. 7. The elastic sheet cutting die as set forth in claim 6, wherein a plurality of third mounting holes extending downwards are formed in the top surface edge of the tool apron (5), a plurality of fourth mounting holes extending upwards are formed in the bottom edge of the tool apron (5), the third mounting holes are formed in the top ends of the fourth mounting holes, the bottom ends of the positioning pins (15) are mounted in the fourth mounting holes, the top ends of the positioning pins (15) are mounted in the third mounting holes, and the bottom surface width of the positioning pins (15) is larger than the width of the third mounting holes.
  8. 8. A spring cutting die as set forth in any one of claims 1 to 3 and 6 to 7, wherein a first opening (102) is formed in the middle of the mounting plate (1), an upper cutter (4) is arranged in the first opening (102), the upper cutter (401) is arranged on the upper cutter (4), a limiting table (17) is arranged above the upper cutter (401), a second opening is formed in the middle of the limiting table (17), the width of the second opening is larger than that of the upper cutter (401) and smaller than that of the first opening (102), and the width of the top surface of the punching cutter (6) is smaller than that of the second opening.

Description

Spring piece cutting die Technical Field The invention relates to the technical field of dies, in particular to a spring piece cutting die. Background In the process of manufacturing the micro switch, corresponding elastic sheets are often required to be put into the shell of the micro switch, so that a factory needs to manufacture a certain number of elastic sheets to meet the requirement. In order to improve the manufacturing efficiency of the elastic sheets, referring to fig. 1, a material strip (18) is usually manufactured first in a factory, a plurality of rectangular frames (19) are arranged on the material strip (18), four elastic sheets (not shown in fig. 1) are arranged in each rectangular frame (19), the four elastic sheets are sequentially and independently distributed along the width direction of the material strip (18), and two ends of each elastic sheet are respectively connected to two side edges in the rectangular frame (19), so that the required number of elastic sheets are needed to be cut off for subsequent assembly and use. However, the existing stamping die generally cuts all four elastic sheets in the rectangular frame (19) from the material belt (18) at one time, so that the cutting quantity of the elastic sheets is not well controlled, for example, when only one elastic sheet is needed, the four elastic sheets are cut at one time as a result, and the elastic sheets are wasted. Disclosure of Invention The invention aims to provide a spring piece cutting die which solves the technical problem that the cutting quantity of spring pieces is not easy to control in the prior art. In order to achieve the above purpose, the technical scheme of the invention provides a spring sheet cutting die which comprises a mounting plate, wherein a supporting plate and a deck are sequentially arranged below the mounting plate, the supporting plate and the deck can move up and down relative to the mounting plate, an upper knife edge is arranged in the middle of the mounting plate, a knife holder extending upwards is arranged in the middle of the supporting plate, a punching knife extending upwards is arranged in the middle of the deck, the width of the top surface of the knife holder is larger than that of the upper knife edge, a channel extending up and down is arranged in the knife holder, the top end of the punching knife is inserted into the channel upwards, the width of the top surface of the punching knife is smaller than that of the upper knife edge, and a plurality of steps which are sequentially lifted from left to right are arranged on the top surface of the punching knife. Further, a lifting floating plate is arranged between the mounting plate and the supporting plate and can move up and down relative to the mounting plate, a through hole extending up and down is arranged in the middle of the lifting floating plate, the top end of the tool apron upwards penetrates through the through hole, a precutting groove extending front and back is arranged on the bottom surface of the mounting plate, and the precutting groove is arranged below the upper tool edge. Further, a plurality of guide posts extending upwards are arranged on the edges of the deck, a plurality of guide holes are respectively arranged on the edges of the supporting plate, the lifting plate and the mounting plate, the top ends of the guide posts penetrate through the supporting plate, the lifting plate and the guide holes of the mounting plate in sequence, a plurality of height limiting rings are respectively arranged on the edges of the top surfaces of the deck and the supporting plate, and the top ends of the guide posts penetrate through the deck and the height limiting rings of the supporting plate in sequence. Further, a first limiting column extending downwards is arranged at the bottom edge of the mounting plate, first limiting holes are respectively formed in the edges of the lifting plate and the supporting plate, the bottom ends of the first limiting columns penetrate through the lifting plate and the first limiting holes of the supporting plate downwards in sequence and then are connected with a first limiting ring, the straight outer diameter of the first limiting ring is larger than the diameter of the first limiting holes, a second limiting column extending downwards is arranged at the bottom edge of the supporting plate, a second limiting hole is formed in the edge of the deck, the second limiting column penetrates through the second limiting holes downwards and then is connected with a second limiting ring, and the outer diameter of the second limiting ring is larger than the inner diameter of the second limiting holes. Further, a plurality of movable cavities are arranged in the mounting plate, the plurality of movable cavities are respectively arranged on two sides of the upper knife edge, a bottom hole is formed in the bottom of each movable cavity, a third spring is arranged at the top of each movable cavity, a fl