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CN-121988673-A - Continuous stamping die for metal stamping

CN121988673ACN 121988673 ACN121988673 ACN 121988673ACN-121988673-A

Abstract

The invention relates to the technical field of metal processing, and discloses a continuous stamping die for metal stamping, which comprises a shell, a metal die and a metal die, wherein the shell is provided with a die body; the device comprises a base plate, an annular frame, a stamping mechanism, a guide disc, a rotating assembly and a rotating assembly, wherein the guide disc is arranged on the base plate through a fixing rod, a guide groove is formed in the guide disc, and the stamping mechanism moves along the guide groove to realize stamping action. According to the invention, the annular frame, the driving piece, the guide rail and the sliding plate are arranged, the plurality of groups of mounting rings and the stamping mechanisms are arranged on the annular frame, and the intermittent rotation of the annular frame can be realized by matching the feeding hole, the discharging hole and the feeding mechanism, so that the plurality of groups of stamping mechanisms are driven to sequentially pass through the feeding hole to finish feeding, the metal pipe is continuously stamped in the rotation process, and finally, the metal pipe is automatically discharged at the discharging hole. The structural design realizes continuous production of the protective net ring, avoids complicated operations of frequent loading and unloading and multi-station transfer in the traditional process, and greatly improves the production efficiency.

Inventors

  • YIN CHAO

Assignees

  • 宁波康耐特汽配有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (8)

  1. 1. Continuous stamping die for metal stamping, comprising a base (3), characterized in that it further comprises: The feeding device comprises a shell (4), wherein the shell (4) is arranged on a base (3), a substrate (41) is arranged at one end of the shell (4), a feeding hole (42) and a discharging hole (43) are respectively formed in the side face and the bottom of the shell (4), a feeding mechanism (2) is arranged on the shell (4), and an external feeding mechanism (1) is arranged between the feeding mechanism (2) and the feeding hole (42); The annular frame (5), be equipped with a plurality of slide (52) on annular frame (5), be equipped with guide rail (44) on base plate (41), a plurality of slide (52) are located in guide rail (44) and follow guide rail (44) and remove, annular frame (5) are connected with go-between (53) through a plurality of diagonal bars, install on base plate (41) with go-between (53) transmission connection's driving piece (46); the stamping mechanism (6), a plurality of mounting rings (51) are arranged on the annular frame (5), the stamping mechanism (6) is arranged in the mounting rings (51), the stamping mechanism (6) stamps the metal tube, and the mounting rings (51) drive the plurality of stamping mechanisms (6) to rotate so as to realize continuous stamping; The guide plate (7) is arranged on the base plate (41) through a fixed rod (45), a guide groove (71) is formed in the guide plate (7), and the stamping mechanism (6) moves along the guide groove (71) to realize stamping action; the rotating assembly (9) is arranged in the shell (4), and the rotating assembly (9) is in transmission connection with the stamping mechanism (6).
  2. 2. The continuous stamping die for metal stamping according to claim 1, wherein the stamping mechanism (6) comprises a plurality of bulging petals (61) and a stamping rod (62), the bulging petals (61) are arranged in the mounting ring (51) and are in an annular array, a step (512) is arranged in the mounting ring (51), two extending parts (613) which are distributed at intervals are arranged on the bulging petals (61), the two extending parts (613) are sleeved outside the step (512) and move along the plane of the step (512), a guide cylinder (511) is arranged on the mounting ring (51), the stamping rod (62) is movably sleeved in the guide cylinder (511), a plurality of wedge seats (621) are arranged on the periphery of the stamping rod (62), inclined strips (622) are arranged on the wedge seats (621), inclined surfaces of the wedge blocks (611) are attached to inclined surfaces of the wedge seats (621), inclined grooves (612) are formed in the inclined grooves (622), and the inclined strips (612) are attached to the inclined grooves (612) which are located in the positions (612).
  3. 3. Continuous stamping die for metal stamping according to claim 2, characterized in that one end of the stamping rod (62) is rotatably provided with a connecting rod (63), the other end of the connecting rod (63) is provided with a guide roller (64), the guide roller (64) is positioned in the guide groove (71) and moves along the guide groove (71), the guide groove (71) is provided with two groups, the two groups of guide grooves (71) are symmetrical in the guide disc (7), and two ends of the guide roller (64) are respectively attached to the groove surfaces of the two groups of guide grooves (71).
  4. 4. A continuous stamping die for metal stamping according to claim 3, characterized in that the guide groove (71) is irregularly annular, the radius of the area of the guide groove (71) near the feed opening (42) is the smallest, the radius of the other area is gradually increased, the radius of the area of the guide groove (71) near the discharge opening (43) is gradually decreased and the radius is restored to the radius near the feed opening (42).
  5. 5. The continuous stamping die for metal stamping according to claim 4, wherein the rotating assembly (9) comprises two groups of conical racks (91) and a plurality of groups of bevel gears (92), the bevel gears (92) are coaxially arranged on the periphery of the stamping rod (62), the two groups of conical racks (91) are fixed on the base plate (41) through support plates and are positioned on the periphery of the guide disc (7), one group of conical racks (91) is positioned on one side opposite to the feed port (42), and the other group of conical racks (91) is positioned on one side opposite to the discharge port (43).
  6. 6. The continuous stamping die for metal stamping according to claim 2, wherein the mounting ring (51) is provided with a plurality of groups of clamping mechanisms (8), each clamping mechanism (8) comprises an air cylinder (81), a push rod (82) and a clamping block (83), the air cylinders (81) are fixed on the side face of the mounting ring (51) and are located on the outer side of the annular frame (5), the push rods (82) are movably sleeved in the air cylinders (81), a fixing ring (811) is arranged in the air cylinders (81), an elastic piece (812) is connected between each push rod (82) and the fixing ring (811), the other end of each push rod (82) is provided with the clamping block (83), each clamping block (83) faces the corresponding bulging valve (61), a plurality of air cavities (514) are formed in the mounting ring (51), each air cavity (514) is communicated with the air cylinders (81) and stores air, a piston rod (515) is movably mounted in each air cavity (514), the other end of each piston rod (515) is provided with a push plate (516), each push plate (516) is attached to the surface of the corresponding bulging valve (61), and the step (512) is provided with an annular groove (513) for moving.
  7. 7. The continuous stamping die for metal stamping according to claim 6, wherein the first roller (84) and the second roller (85) are rotatably mounted on two sides of the clamping block (83), and anti-slip materials are arranged on the surfaces of the clamping block (83) facing the bulging valve (61) and the outer surfaces of the first roller (84) and the second roller (85).
  8. 8. The continuous stamping die for metal stamping according to claim 7, wherein an arc-shaped box (86) is arranged on one surface of the clamping block (83) close to the mounting ring (51), one ends of shafts of the first roller (84) and the second roller (85) are rotatably arranged in the arc-shaped box (86), a first gear (841) and a second gear (851) are arranged on the peripheries of the shafts of the first roller (84) and the second roller (85) respectively, an arc-shaped rack I (87) and an arc-shaped rack III (88) are slidably arranged in the arc-shaped box (86), the arc-shaped rack I (87) and the arc-shaped rack III (88) are meshed with the first gear (841) and the second gear (851) respectively, the arc-shaped rack I (87) and the arc-shaped rack III (88) are respectively provided with an arc-shaped rack II (871) and an arc-shaped rack IV (881), the arc-shaped rack III (89) is elastically rotatably arranged in the arc-shaped box (86), the arc-shaped rack II (871) and the arc-shaped rack IV (881) are symmetrical along a central line of the gear III (89), and the arc-shaped rack II (881) is meshed with the arc-shaped rack III (881).

Description

Continuous stamping die for metal stamping Technical Field The invention relates to the technical field of metal processing, in particular to a continuous stamping die for metal stamping. Background The flexible joint of the automobile exhaust pipe is used as a key component for connecting the engine and the exhaust system, mainly plays roles of shock absorption and vibration reduction, can effectively improve riding comfort, improves the working environment of a purification device in the exhaust system, and prolongs the service lives of the air purifier and the engine. The existing automobile exhaust pipe flexible joint generally comprises a corrugated pipe, a winding pipe is sleeved inside the corrugated pipe, an outer net sleeve is sleeved outside the corrugated pipe, and the end part of the outer net sleeve is fixed through a protective net ring. In the existing production process, the protective net ring is usually manufactured by cutting a metal pipe into short pipe sections and then punching and bulging. The specific stamping process usually depends on a plurality of groups of bulging petals which are arrayed in a circumferential ring shape, and the bulging petals are driven to synchronously expand radially outwards, so that pressure is applied to the inner wall of the metal pipe section to enable the metal pipe section to be plastically deformed, and finally the required shape of the protective net ring is formed. However, the existing stamping bulging process has the following technical problems: Firstly, in order to ensure stamping quality, avoid the metal pipe to be broken caused by one-step forming, and ensure the roundness of the protective net ring so as to be beneficial to subsequent assembly, the metal pipe section is often required to be stamped step by step for multiple times in actual production. In the prior art, after a metal pipe section is punched on one set of dies, the metal pipe section needs to be detached from the dies and then transferred to another set of dies with slightly larger bulging size for next punching. The production mode of repeated loading and unloading and multi-station transfer is complex in procedure, continuous stamping cannot be realized, and production efficiency is severely restricted. Second, during the bulging process, since the bulging petals are of a split type structure, when they are simultaneously expanded outwardly, the circumferential gap between adjacent bulging petals is increased. This results in the areas of the inner wall of the metal pipe section corresponding to these gaps not being directly squeezed by the bulging flaps, so that the inner wall of the formed protection net ring is recessed or irregularly flat at these positions, and the overall roundness is poor. In order to ensure the roundness of the final product, operators often need to rotate the metal pipe section by a certain angle after one stamping, and then put the metal pipe section into another set of dies for pressure compensation. The method is complex in operation, the angle is difficult to control accurately, new errors are introduced due to roundness differences of different dies, and finally unstable product quality and low yield of the protective net ring are caused. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a continuous stamping die for metal stamping, so as to achieve the purposes of realizing continuous stamping, improving the roundness of the inner wall of a protective net ring and ensuring the assembly precision. The aim of the invention can be achieved by the following technical scheme: A continuous stamping die for metal stamping, comprising a base, further comprising: The shell is arranged on the base, one end of the shell is provided with a substrate, the side surface and the bottom of the shell are respectively provided with a feed inlet and a discharge outlet, the shell is provided with a feeding mechanism, and an external feeding mechanism is positioned between the feeding mechanism and the feed inlet; The annular frame is provided with a plurality of sliding plates, the base plate is provided with a guide rail, the sliding plates are positioned in the guide rail and move along the guide rail, the annular frame is connected with a connecting ring through a plurality of inclined rods, and the base plate is provided with a driving piece in transmission connection with the connecting ring; the stamping mechanism is arranged on the annular frame, a plurality of mounting rings are arranged in the mounting rings, the stamping mechanism is used for stamping the metal tube, and the mounting rings drive the plurality of stamping mechanisms to rotate so as to realize continuous stamping; The guide plate is arranged on the base plate through a fixed rod, a guide groove is formed in the guide plate, and the stamping mechanism moves along the guide groove to realize stamping action; The rotating assembly is installed in t