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CN-122007253-A - High-precision machining progressive die for silicon steel sheet

CN122007253ACN 122007253 ACN122007253 ACN 122007253ACN-122007253-A

Abstract

The invention discloses a high-precision machining progressive die for a silicon steel sheet, which relates to the technical field of progressive dies and comprises a top plate and a base, wherein an upper die is fixedly arranged at the bottom of the top plate, a lower die is fixedly arranged at the top of the base, a cooling structure is arranged at the top of the upper die, the cooling structure comprises an air chamber fixedly arranged at the top of the upper die, two groups of air pipes are fixedly connected to one side of the air chamber, one ends of the two groups of air pipes are fixedly connected with air injection rods, air injection units are arranged outside the two air injection rods, and a plurality of nozzles are arranged on the outer wall of each air injection unit. According to the high-precision machining progressive die for the silicon steel sheet, circular heat dissipation of the cutter head is achieved through the vortex-shaped air flow, heat dissipation uniformity is guaranteed through the collocation of the pressure stabilizing structure, overheating of the cutter head is effectively relieved, burr fluctuation is reduced, meanwhile machining efficiency reduction caused by pure dependence on a control system is avoided, the problem of uneven heat distribution is solved from the structural aspect, and machining precision of products is remarkably improved.

Inventors

  • CHEN JIE
  • QIN ZHENBIN

Assignees

  • 无锡金汇精工机械制造有限公司

Dates

Publication Date
20260512
Application Date
20260311

Claims (10)

  1. 1. The high-precision machining progressive die for the silicon steel sheets comprises a top plate (1) and a base (2) and is characterized in that an upper die (11) is fixedly arranged at the bottom of the top plate (1), a lower die (21) is fixedly arranged at the top of the base (2), a cooling structure (5) is arranged at the top of the upper die (11), the cooling structure (5) comprises an air chamber (51) fixedly arranged at the top of the upper die (11), two groups of air pipes (52) are fixedly connected to one side of the air chamber (51), one ends of the two groups of air pipes (52) are fixedly connected with air injection rods (54), air injection units (55) are respectively arranged outside the two air injection rods (54), a plurality of nozzles (56) are arranged on the outer wall of each air injection unit (55), the included angles between the nozzles (56) and the air injection rods (54) are gradually reduced, and air flows ejected by the air injection units (55) on two sides of the upper die (11) and two sides of the lower die (21) can respectively form air flow in the shape of a vortex-shaped cutter head of the upper die (11) and the lower die (21).
  2. 2. The high-precision machining progressive die for the silicon steel sheets, as set forth in claim 1, is characterized in that a following assembly (57) is mounted on the top of the air chamber (51), the following assembly (57) comprises a mounting plate (571) mounted at the bottom end of the top plate (1), a sliding rod is fixedly connected to the bottom end of the mounting plate (571), a piston plate (511) is slidably connected to the inside of the air chamber (51), the top end of the piston plate (511) is fixedly connected with the bottom end of the sliding rod, a gear box (572) is mounted at the bottom end of the mounting plate (571), a transmission gear (574) is arranged at the input end of the gear box (572), the outer wall of the transmission gear (574) is in meshed connection with a rack (573), the output end of the gear box (572) is fixedly connected with one end of an air injection rod (54) located above, and a feeding table (3) and a discharging table (4) are fixedly connected to the two ends of the base (2).
  3. 3. The high-precision machining progressive die for the silicon steel sheet, as set forth in claim 1, characterized in that a limiting frame (512) is fixedly connected to one side, far away from the lower die (21), of the air chamber (51), and a pressure stabilizing air bag (513) communicated with the top of the air chamber (51) is arranged inside the limiting frame (512).
  4. 4. The high-precision machining progressive die for the silicon steel sheet, as set forth in claim 1, characterized in that a sealing assembly (58) is arranged inside the air injection rod (54), the sealing assembly (58) comprises a plurality of elastic telescopic rods (581) arranged inside the air injection rod (54), the output ends of the elastic telescopic rods (581) are fixedly connected with rubber sealing blocks (582), and the outer walls of the rubber sealing blocks (582) are inserted into air outlet holes of the air injection rod (54).
  5. 5. The high-precision machining progressive die for the silicon steel sheet, as set forth in claim 4, characterized in that an air-vent block (583) is fixedly connected to the inside of the air-vent unit (55), one end of the air-vent block (583) is abutted against one end of the rubber sealing block (582), and an air-vent channel for communicating the inside of the air-vent rod (54) with the inside of the air-vent unit (55) is formed in the outer wall of the air-vent block (583).
  6. 6. The high-precision machining progressive die for the silicon steel sheet, as set forth in claim 1, characterized in that an auxiliary assembly (59) is arranged on the surface of the upper die (11), the auxiliary assembly (59) comprises a slag discharging channel (591) arranged on the surface of the lower die (21), a wedge-shaped plate (592) is fixedly connected to the top of the slag discharging channel (591), and the wedge-shaped plate (592) is located between the air chamber (51) and the opposite surface of the lower die (21).
  7. 7. The high-precision machining progressive die for silicon steel sheets according to claim 6, wherein the auxiliary assembly (59) further comprises an air injection box (594) fixedly connected to the interior of the slag discharge channel (591), the bottom of the air chamber (51) is fixedly connected with a circular tube communicated with the air chamber (51), and the bottom end of the circular tube is communicated with the interior of the air injection box (594).
  8. 8. The high-precision machining progressive die for silicon steel sheets according to claim 7, wherein the air outlet port of the air jet box (594) is provided with a filter screen (595).
  9. 9. The high-precision machining progressive die for the silicon steel sheet as set forth in claim 7, wherein an electromagnetic valve (593) is installed outside the round tube, the electromagnetic valve (593) is kept smooth when the air injection box (594) sucks air, and the electromagnetic valve is intermittently opened when the air injection box (594) discharges air to form pulse jet air flow.
  10. 10. The high-precision machining progressive die for the silicon steel sheet according to claim 1, further comprising a system control module (6), wherein the system control module (6) is in communication connection with a control system of the silicon steel sheet machining equipment and is used for automatically regulating and controlling the opening and closing of the electromagnetic valve (593) according to the running state of the upper die (11); The system control module (6) comprises an air pressure monitoring unit (61), an operation linkage unit (62) and a pulse control unit (63), wherein the air pressure monitoring unit (61) is integrated inside the air chamber (51) and is used for collecting air pressure data in the air chamber (51) in real time; The operation linkage unit (62) receives an operation signal of the upper die (11) sent by a control system of the silicon steel sheet processing equipment, wherein the operation signal comprises a downlink processing signal and an uplink return signal of the upper die (11); The pulse control unit (63) is respectively and electrically connected with the air pressure monitoring unit (61), the operation linkage unit (62) and the electromagnetic valve (593), when the air pressure monitoring unit (61) detects that the air pressure in the air chamber (51) reaches a preset threshold value, and the operation linkage unit (62) receives a downlink processing signal of the upper die (11), the pulse control unit (63) triggers the electromagnetic valve (593) to open for a preset time and then automatically close, so that the air injection box (594) generates circulated pulse air flow; The preset threshold value and the opening time of the electromagnetic valve (593) can be subjected to parameter configuration through a control system of silicon steel sheet processing equipment, so that the adjustable and controllable pulse air flow intensity is realized.

Description

High-precision machining progressive die for silicon steel sheet Technical Field The invention relates to the technical field of progressive dies, in particular to a high-precision machining progressive die for a silicon steel sheet. Background A high-precision machining progressive die (also called a progressive die) for silicon steel sheets is a precision stamping die for mass production of electric iron core parts such as motors, transformers and the like, and is used for sequentially completing multiple working procedures such as punching, cutting, stacking riveting, leveling and shaping and the like on multiple working stations through strip-shaped silicon steel materials in a single stroke of a press, so that complex parts such as stator sheets, rotor sheets and the like are finally and efficiently produced directly. In the prior art, when a silicon steel sheet is continuously punched into a hard and brittle tungsten steel sheet roll at a high speed in the actual use process, the heat accumulation difference of different stations and different areas causes non-uniform thermal expansion, so that dynamic clearance thermal drift is caused, especially the problem that the position of a die tool bit is overheated, which possibly causes fluctuation of burrs of a product, the quality of the product is reduced, the abrasion of a cutting edge is aggravated, the service life of the die is reduced and the like, the problem that the processing efficiency is reduced due to intermittent processing control by a control system is simply relied on, and the problem of uneven heat distribution cannot be solved from the structural aspect is solved. Therefore, a high-precision machining progressive die for a silicon steel sheet is proposed to solve the above problems. Disclosure of Invention In order to make up the defects of the prior art, the problems of overheat condition and the like of a long-time processing die are solved, and the high-precision processing progressive die for the silicon steel sheet is provided. The technical scheme includes that the high-precision machining progressive die for the silicon steel sheet comprises a top plate and a base, wherein an upper die is fixedly arranged at the bottom of the top plate, a lower die is fixedly arranged at the top of the base, a cooling structure is arranged at the top of the upper die and comprises an air chamber fixedly arranged at the top of the upper die, two groups of air pipes are fixedly connected to one side of the air chamber, one ends of the two groups of air pipes are fixedly connected with air injection rods, air injection units are arranged outside the two air injection rods, a plurality of nozzles are arranged on the outer wall of each air injection unit, included angles between the nozzles and the air injection rods are gradually reduced, and air flows sprayed by the air injection units respectively positioned at two sides of the upper die and two sides of the lower die can respectively form vortex-shaped air flows around an upper die cutter head and a lower die cutter head. Preferably, the top of air chamber is installed and is followed the subassembly, follow the subassembly including installing the mounting panel in the roof bottom, the bottom fixedly connected with slide bar of mounting panel, the inside sliding connection of air chamber has the piston board, the top of piston board and the bottom fixed connection of slide bar, the bottom fixedly connected with gear of mounting panel, the gear box is installed to one side of air chamber, the input of gear box is provided with drive gear, drive gear's outer wall and rack engagement are connected, the output of gear box and the one end fixed connection of the jet-propelled pole that is located the top, the both ends of base fixedly connected with feed table and ejection of compact platform respectively. Preferably, one side of the air chamber far away from the lower die is fixedly connected with a limiting frame, and a pressure stabilizing air bag communicated with the top of the air chamber is arranged in the limiting frame. Preferably, the inside of jet-propelled pole is provided with seal assembly, seal assembly includes a plurality of elastic telescopic links of installing inside the jet-propelled pole, the output fixedly connected with rubber seal piece of elastic telescopic link, the outer wall of rubber seal piece is pegged graft with the venthole of jet-propelled pole. Preferably, the inside fixedly connected with of air injection unit ventilates the piece, the one end butt of ventilation piece and the one end of rubber seal piece, the outer wall of ventilation piece has seted up the inside passageway of ventilating that communicates air injection pole and air injection unit inside. Preferably, an auxiliary assembly is arranged on the surface of the upper die and comprises a slag discharging channel arranged on the surface of the lower die, a wedge-shaped plate is fixedly connected to the t