CN-121988684-A - Foot cutting device for miniature electronic transformer production

CN121988684ACN 121988684 ACN121988684 ACN 121988684ACN-121988684-A

Abstract

The invention relates to the technical field of electronic element production equipment, in particular to a foot shearing device for miniature electronic transformer production, which comprises a handle, a frame, a supporting frame, two shearing sliding seats, cutter holders and ladder cutters, wherein the frame is fixedly connected to the right side of the handle to form a supporting frame of the foot shearing device, the two shearing sliding seats are vertically and slidably connected in the frame and can move relatively or oppositely, the cutter holders are slidably connected in the shearing sliding seats, the cutting edges of the two ladder cutters are arranged face to face in a clamping manner in the cutter holders. The device adopts the step cutters with the step cutting edge design, and the edge faces of each row of steps are sequentially contacted with the pins in the shearing process, so that the pins are stressed in stages, the impact load generated by synchronous shearing of the traditional cutters is avoided, the risk of cutting edge breakage is reduced, the quality problems of shearing burrs, pin wire drawing and the like are eliminated, and the flatness and consistency of pin cutting are ensured.

Inventors

Xiao Jingzhi
XIA SHAOHUA
LI CANBING
XIAO JINGFENG
DAI HONGLIANG
YANG HUI

Assignees

湖南省金莱特科技有限公司
沅江市金莫特电子有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (8)

1. Foot device is cut with cutting in miniature electronic transformer production, its characterized in that includes: a handle (101); a frame (102) fixedly connected to the right side of the handle (101) to form a supporting frame of the foot shearing device; the two shearing slide bases (103) are vertically and slidably connected in the frame (102), and are symmetrically arranged up and down, and the two shearing slide bases (103) can move relatively or oppositely; a knife holder (105) connected in a sliding manner in each shearing slide seat (103); the step cutters (109) are clamped in the cutter holders (105), and the cutting edges of the two step cutters (109) are arranged face to face; The bearing table (1021) is arranged on the frame (102) at a position close to the cutting edge of each step cutter (109) and is used for placing pins of the miniature electronic transformer; The wear uniform distribution driving assemblies are arranged in each shearing slide seat (103) and are used for driving the tool apron (105) and the stepped cutter (109) to move slightly along the longitudinal direction; The reciprocating shearing driving assembly is arranged in the handle (101) and is used for driving the two shearing sliding seats (103) to move reciprocally opposite or opposite; the overload protection clutch assembly is used for cutting off power transmission when the shearing resistance exceeds a preset value; the magnetic force resetting component is used for resetting the overload protection clutch component after overload protection; and the rack transmission assembly is arranged on the frame (102) and used for driving the wear uniform distribution driving assembly to operate.
2. The foot shearing device for production of the miniature electronic transformer is characterized in that the cutting edges of the step cutters (109) are distributed in a step mode, four step cutting edges are longitudinally arranged on the bottom cutting edge of the step cutter (109) at the upper side, a first row, a second row, a third row and a fourth row are sequentially arranged from front to back, the cutting edges of the first row are at the lowest position, the cutting edges of the fourth row are at the highest position, the cutting edges of the top cutting edge of the step cutter (109) at the lower side are also provided with four step cutting edges, the distribution direction of the four step cutting edges is opposite to that of the upper side, the cutting edges of the first row are at the highest position, and the cutting edges of the fourth row are at the lowest position.
3. The foot cutting device for miniature electronic transformer production of claim 1, wherein said wear uniform drive assembly comprises: the two synchronizing wheels (107) are longitudinally and rotatably connected to the right wall of each shearing slide seat (103), and each shearing slide seat (103) is provided with two synchronizing wheels (107); The synchronous belt (108) is wound between two adjacent synchronous wheels (107) on the same shearing slide seat (103); The connecting sliding block (106) is vertically and slidably connected to one side, far away from each other, of the tool apron (105) and fixedly connected with the adjacent synchronous belt (108).
4. The leg cutting device for manufacturing a miniature electronic transformer of claim 1, wherein said reciprocating shear drive assembly comprises: a drive motor (301) mounted in the handle (101); A transmission sleeve (303) fixedly connected to an output shaft of the driving motor (301) through a coupling; the cam rotating shaft (304) is rotationally connected to the middle part of the right wall of the handle (101), and a toggle pin which is vertically symmetrical is arranged on the cam rotating shaft (304); the clamping grooves are formed in one sides, close to each other, of the shearing sliding seats (103), the clamping grooves extend longitudinally, and the poking pins are inserted into the corresponding clamping grooves.
5. The leg cutting device for manufacturing a miniature electronic transformer as set forth in claim 4, wherein said overload protection clutch assembly comprises: Five clutch ejector pins (306) are uniformly and slidably connected in the transmission sleeve (303) along the circumferential direction and are horizontally arranged; The reset springs (307) are arranged between the clutch ejector pins (306) and the transmission sleeve (303), and the reset springs (307) are wound on the adjacent clutch ejector pins (306); The blind pin holes are formed in the right side of the cam rotating shaft (304), five blind pin holes are formed in the circumferential direction and correspond to the clutch ejector pins (306) one by one, and the right ends of the clutch ejector pins (306) are inserted into the corresponding blind pin holes under the action of the reset springs (307).
6. The leg cutting device for manufacturing a miniature electronic transformer of claim 5, wherein said magnetic force resetting assembly comprises: the magnetic suction seat (302) is fixedly connected in the handle (101); the magnetic slip ring (305) is fixedly connected between the left ends of the five clutch ejector pins (306); the output shaft of the driving motor (301) sequentially passes through the magnetic attraction seat (302) and the magnetic slip ring (305), and the magnetic attraction seat (302) is in magnetic attraction fit with the magnetic slip ring (305).
7. A pin shearing apparatus for miniature electronic transformer production as recited in claim 3, wherein said rack gear assembly comprises: the fixed seat (201) is vertically and symmetrically fixedly connected to the right side in the frame (102); A unidirectional gear (202) fixedly connected to the right ends of two synchronous wheels (107) on the upper front side of each shearing slide seat (103); And the connecting teeth (203) are arranged on one side of the inner wall of each fixing seat (201) close to the unidirectional gear (202) and meshed with the adjacent unidirectional gears (202).
8. A pin shearing device for miniature electronic transformer production as claimed in claim 1, characterized in that each shearing slide (103) is provided with a longitudinally extending guide slot (104), and each knife holder (105) is slidably connected to an adjacent guide slot (104).

Description

Foot cutting device for miniature electronic transformer production Technical Field The invention relates to the technical field of electronic element production equipment, in particular to a foot shearing device for miniature electronic transformer production. Background In the process of automatic assembly of electronic components, pin cutting (pin cutting) is usually required for pin-attached components such as miniature electronic transformers, so that the pin-attached components meet the installation requirements of a PCB. At present, a fixed double-blade knife structure is adopted in a foot shearing device widely applied in the industry, and all pins are cut off simultaneously through one-time pressing action. However, as the miniature electronic transformer has a large number of pins and dense arrangement, and the pins are made of tin-plated copper wires with certain hardness, the cutter bears extremely large impact load in the moment of shearing, so that the cutting edge is easily broken and damaged, the abrasion is aggravated, and further the quality problems of shearing burrs, pin wire drawing and the like occur. When serious, the blade needs to be frequently stopped and replaced, so that the production efficiency is affected, and the consistency of products is difficult to ensure. To alleviate the tool wear problems described above, some existing devices attempt to extend the blade life by increasing the hardness of the tool material or by adding lubrication measures. In addition, the reciprocating structure is adopted, so that the blade generates tiny displacement after each shearing, however, the improvement mainly focuses on the improvement of the whole service life of the cutter, and the fundamental problem of initial impact concentration is not really solved, namely, at the moment of initial shearing, all pins are stressed simultaneously, so that local stress peaks are too high, early fatigue failure is easy to occur in the cutter point area, and meanwhile, severe vibration and unbalanced load caused by synchronous shearing of multiple pins are difficult to effectively inhibit. Therefore, when the existing pin shearing device is used for processing a high-density multi-pin miniature electronic transformer, technical bottlenecks such as limited service life of a cutter, unstable shearing quality and the like still exist, and reasonable dispersion of shearing load and effective reduction of impact stress are needed to be realized through structural innovation. Disclosure of Invention The invention provides a pin shearing device for miniature electronic transformer production, which aims to overcome the defects that when the existing pin shearing device is used for shearing, all pins are synchronously stressed, so that initial impact load is concentrated, tool tipping abrasion is easy to cause, and shearing quality is unstable. A foot shearing device for miniature electronic transformer production comprises a handle, a frame fixedly connected to the right side of the handle to form a supporting frame of the foot shearing device, two shearing sliding seats vertically and symmetrically arranged in the frame, two shearing sliding seats capable of moving relatively or relatively, a cutter seat slidably connected in each shearing sliding seat, a stepped cutter clamped in each cutter seat, a bearing table arranged on the frame and close to the cutting edge of each stepped cutter and used for placing pins of the miniature electronic transformer, a wear uniform driving assembly arranged in each shearing sliding seat and used for driving the cutter seat and the stepped cutter to move longitudinally in a small amplitude, a reciprocating shearing driving assembly arranged in the handle and used for driving the two shearing sliding seats to reciprocate relatively or relatively, an overload protection clutch assembly used for cutting off power transmission when shearing resistance exceeds a preset value, a magnetic force reset assembly used for resetting the overload protection clutch assembly after overload protection, a rack transmission assembly arranged on the frame and used for driving the wear uniform driving assembly to operate. The cutting edges of the step cutters are distributed in a step mode, four step cutting edges are longitudinally arranged on the bottom cutting edge of the step cutter on the upper side, a first row, a second row, a third row and a fourth row are sequentially arranged from front to back, the first row of cutting edges are at the lowest position, the fourth row of cutting edges are at the highest position, four step cutting edges are also arranged on the top cutting edge of the step cutter on the lower side, the distribution direction of the four step cutting edges is opposite to that of the upper side, the first row of cutting edges are at the highest position, and the fourth row of cutting edges are at the lowest position. The abrasion uniform distribution driving assembly c