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CN-121988715-A - Continuous die casting device and method for precise parts

CN121988715ACN 121988715 ACN121988715 ACN 121988715ACN-121988715-A

Abstract

The invention relates to the technical field of die casting, and discloses a continuous die casting device for precise parts, which comprises a die casting machine body, a hydraulic upper die mounting seat and a liquid injection gun, wherein an upper die is rotatably arranged at the lower end of the hydraulic upper die mounting seat, a rectangular lower die is rotatably arranged on a working table surface of the die casting machine body, die grooves matched with the upper die are formed on the periphery of the rectangular lower die, and the rectangular lower die is driven to rotate step by a motor.

Inventors

  • XIONG XUEHUI
  • Sheng Shuanghong

Assignees

  • 苏州愽瑞孚精密科技有限公司

Dates

Publication Date
20260508
Application Date
20260312

Claims (9)

  1. 1. The utility model provides a continuous die casting device of accurate spare part, includes die casting machine body (1), hydraulic pressure upper die mount pad (2) and annotates liquid rifle (12), its characterized in that, upper die (3) are installed in the rotation of hydraulic pressure upper die mount pad (2) lower extreme, rotate on the table surface of die casting machine body (1) and install rectangle bed die (4), mould groove (35) with upper die (3) matching are all offered to rectangle bed die (4) all around side, are provided with the bed die in mould groove (35), and the bed die includes annular plate (14) and round plate (15) of being connected with mould groove (35) sliding connection, and is used for forming with annular plate (14) of die casting machine body (1) fixed mounting in motor (6), and cylinder (8) and rectangle bed die (4) one end rigid coupling have been fixed in motor (6) work end, set up circular chamber (18) in rectangle bed die (4), be provided with the impeller that control annular plate (14) goes up and down in circular chamber (18), impeller includes lift piece and annular plate (14) of being connected with rectangular bed die (4) sliding connection and guide plate (14) and lifting guide piece, annular plate (14) for the shaping of die casting machine body, the die casting machine is characterized in that a liquid inlet (13) connected with the liquid injection gun (12) is formed in one side of the die groove (35) in a penetrating mode, a rotating piece for controlling the circular plate (15) to rotate is further arranged in the circular cavity (18), an electric push rod (11) for controlling the pushing piece and the liquid injection gun (12) to move is fixedly installed in the die casting machine body (1), and a connecting piece is arranged between the upper die (3) and the circular plate (15) and used for controlling the separation of a formed workpiece and the upper die (3).
  2. 2. The continuous die casting device of precise parts according to claim 1, wherein the pushing member comprises a U-shaped rod (16) located in the circular cavity (18), two side plates of the U-shaped rod (16) are fixedly connected with the annular plate (14) through the die groove (35), and one side of the U-shaped rod (16) located in the circular cavity (18) is fixedly connected with an L-shaped sliding rod (27).
  3. 3. The continuous die casting device of precise parts according to claim 2, wherein the guide piece comprises a connecting cylinder fixedly connected with the die casting machine body (1), the connecting cylinder is located in the circular cavity (18), the connecting cylinder is composed of a semicircular plate (10) and an arc-shaped plate (9) which are connected with each other, a sliding groove (26) is formed in one side of the connecting cylinder, the L-shaped sliding rod (27) is slidably connected with the sliding groove (26), the sliding groove (26) is composed of a semicircular groove and an arc-shaped wave groove which are connected with each other, the semicircular groove is located on one side of the semicircular plate (10), and the arc-shaped wave groove is located on one side of the arc-shaped plate (9).
  4. 4. The continuous die casting device of the precise parts according to claim 3, wherein the rotating piece comprises a fixed rod (7) which is in sliding connection with the rectangular lower die (4), a sliding opening (22) is formed in the outer side of the cylinder (8), a connecting plate (21) is connected in a sliding manner in the sliding opening (22), the fixed rod (7) is in rotating connection with the connecting plate (21), a U-shaped clamping plate (20) is fixedly arranged at the working end of the electric push rod (11), the U-shaped clamping plate (20) is fixedly connected with the liquid injection gun (12), the connecting plate (21) is in sliding connection with the lower end of the U-shaped clamping plate (20), and a rotating assembly for controlling the rotation of the circular plate (15) is fixedly connected with one end of the fixed rod (7) in the circular cavity (18).
  5. 5. The continuous die casting device for precise parts according to claim 4, wherein the rotating assembly comprises a sawtooth block (29) fixedly connected to one end of a fixed rod (7), a rotating shaft (17) is fixedly connected to one side of the circular plate (15) located in the die groove (35), the rotating shaft (17) is rotatably connected with the rectangular lower die (4), and a gear (28) meshed with the sawtooth block (29) is fixedly connected to one end of the rotating shaft (17) located in the circular cavity (18).
  6. 6. The continuous die casting device for precision parts according to claim 5, wherein a conveying steel belt is arranged in the die casting machine body (1) in a penetrating manner, and the conveying steel belt is arranged below the rectangular lower die (4).
  7. 7. The continuous die casting device of the precise parts according to claim 6, wherein the connecting piece comprises a circular shell (31) fixedly installed on the upper wall of the cavity of the upper die (3), a push block (5) is slidably arranged in the circular shell (31), a part of the push block (5) located in the circular shell (31) is in a conical shape, one end of the push block (5) penetrates through the circular shell (31) and is in sliding connection with the push block, a connecting spring (32) is fixedly arranged between the push block (5) and the circular shell (31), a telescopic piece is slidably arranged on the periphery of the push block (5), the outer end of the telescopic piece penetrates through the circular shell (31), a circular groove (23) is formed in the upper end of the circular plate (15), an annular groove (25) is formed in the periphery of the circular groove (23), and a plurality of stoppers (30) are fixedly installed in the annular groove (25).
  8. 8. Continuous die casting device for precision parts according to claim 7, characterized in that the telescopic member comprises a fixed cylinder (24) slidingly connected to the outside of the push block (5), a push rod (19) is slidingly arranged in the fixed cylinder (24), and an extrusion spring (34) is fixedly arranged between the push rod (19) and the fixed cylinder (24).
  9. 9. A continuous die casting method for precision parts according to claim 8, comprising the steps of: a. and (3) die assembly: Starting the hydraulic upper die mounting seat (2) to drive the upper die (3) to descend and accurately close the lower die in the die groove (35) at the top station, in the process, the round shell (31) in the upper die (3) slides into the round groove (23) of the round plate (15), the push block (5) is extruded by the groove bottom, the push rod (19) extends outwards and into the annular groove (25), part of the push rod (19) abuts against the stop block (30), and the extrusion spring (34) is extruded; b. and (3) liquid injection: The electric push rod (11) drives the U-shaped clamping plate (20) to drive the liquid injection gun (12) to move forwards, the liquid injection gun is attached to the liquid inlet hole (13), the U-shaped clamping plate (20) moves forwards to drive the connecting plate (21) to move, the connecting plate (21) drives the fixed rod (7) and the sawtooth block (29) to move, the driving gear (28) rotates, the gear (28) drives the rotating shaft (17) to rotate, the rotating shaft (17) drives the circular plate (15) to rotate, and then the liquid injection gun (12) injects quantitative molten metal into the closed die groove (35) to be rapidly filled and molded under the high pressure; c. And (5) die sinking: After the pressure maintaining and cooling are carried out for a specified time, the electric push rod (11) drives the liquid injection gun (12) to be separated from the liquid inlet hole (13), the hydraulic upper die mounting seat (2) drives the upper die (3) to ascend, and before ascending, the push rod (19) stretches into the annular groove (25) during die assembly, the electric push rod (11) drives the fixed rod (7) and the saw tooth block (29) to move through the U-shaped clamping plate (20) and the connecting plate (21), the driving gear (28) rotates, the circular plate (15) is driven to rotate for a certain angle through the rotating shaft (17), and the stop block (30) in the annular groove (25) drives the push rod (19) to drive the upper die (3) to synchronously rotate; d. switching stations for the first time: the motor (6) drives the rectangular lower die (4) to rotate ninety degrees in a stepping way through the cylinder (8), the top tool after die casting is moved to one side for further cooling, in the rotating process, the L-shaped slide rod (27) slides in the semicircular groove, and the next die groove (35) to be operated is transferred to the top station for preparing the next wheel die casting operation; e. switching stations for the second time: The motor (6) drives the rectangular lower die (4) to rotate ninety degrees again, a fully cooled workpiece is rotated to a bottom station along with the die groove (35), in the rotating process, the L-shaped slide bar (27) slides into the arc-shaped wave groove from the semicircular groove, the L-shaped slide bar (27) generates periodic fluctuation displacement in the wave track along with the rotation of the rectangular lower die (4), the annular plate (14) is driven to repeatedly lift by the U-shaped rod (16), the workpiece is firstly preliminarily jacked and loosened from the die groove (35), and then the workpiece naturally drops to the lower part under the action of gravity through continuous small-amplitude shaking to be output by conveying steel belts; f. third switching station: The motor (6) continuously drives the rectangular lower die (4) to rotate ninety degrees, the empty die groove (35) is rotated to a side station, the die groove (35) is positioned in a lateral open space, and operators can conveniently clean the flash and the release agent remained in the die groove; g. Fourth switching station: The motor (6) drives the rectangular lower die (4) to rotate ninety degrees for the last time, the die groove (35) which is cleaned is turned back to the top station, and the die-closing and die-casting preparation state is re-entered.

Description

Continuous die casting device and method for precise parts Technical Field The invention relates to the technical field of die casting, in particular to a continuous die casting device and method for precise parts. Background The die casting is a near net forming technology for forming castings after rapid solidification by filling molten metal into a precise die cavity at a high speed under the action of high pressure, is widely applied to manufacturing of parts such as flanges due to the characteristics of high production efficiency, good dimensional accuracy, excellent surface quality and the like, and is generally used for manufacturing flange parts at present, a flange die casting forming machine disclosed by an authorized bulletin No. CN210280609U comprises four guide rods, each guide rod is fixed with a cylinder at the lower end, the top end of a push rod of each cylinder is connected with a gas pipe, the top end of the gas pipe is provided with a gas nozzle, the gas pipe is provided with a gas valve, a sliding seat is connected onto the guide rod in a sliding manner, a pressing die is fixed in the middle of the bottom of the sliding seat through screws, the processing of the die casting structure is greatly reduced, and the subsequent processing efficiency is improved. The traditional flange die casting production process is still intermittent circulation operation, and the standard process flow comprises the steps of die closing, injecting quantitative molten metal into a die cavity, holding pressure and maintaining pressure until a casting is completely solidified, opening the die, waiting for cooling a workpiece, ejecting the casting, cleaning impurities such as flash, release agent and the like remained in the die cavity, and entering the manufacturing circulation of the next flange workpiece, similar to the prior art, but the traditional flange die casting still has the following problems that each flange die casting is completed, the device is required to be subjected to longer cooling and cleaning waiting periods, during the period, the device is in an idle state, the manufacturing of other flanges cannot be carried out in parallel, the device utilization rate is low, the requirement of mass continuous production is difficult to meet, and more importantly, when the die groove cleaning operation is carried out, the die cavity is positioned under an upper die, the operation space is extremely limited, the cleaning tool is difficult to flexibly stretch in, the operation difficulty and the labor intensity are increased, and the forming quality of the subsequent casting is easy to be influenced due to incomplete cleaning. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a continuous die casting device and method for precise parts, and aims to solve the problems of long waiting time, limited cleaning space, low equipment utilization rate and the like in the traditional intermittent die casting process. The continuous die casting device for the precise parts comprises a die casting machine body, a hydraulic upper die mounting seat and a liquid injection gun, wherein an upper die is rotatably arranged at the lower end of the hydraulic upper die mounting seat, a rectangular lower die is rotatably arranged on a working table of the die casting machine body, die grooves matched with the upper die are formed in the periphery of the rectangular lower die, a lower die is arranged in the die grooves, the lower die comprises an annular plate in sliding connection with the die grooves and a circular plate in rotating connection with the die grooves, a motor is fixedly arranged in the die casting machine body, a cylinder is fixedly arranged at the working end of the motor, the cylinder is fixedly connected with one end of the rectangular lower die, a circular cavity is formed in the rectangular lower die, a pushing piece for controlling the lifting of the annular plate is arranged in the circular cavity, the pushing piece comprises a lifting piece in sliding connection with the rectangular lower die and a guide piece fixedly connected with the die casting machine body, the lifting piece is used for controlling the lifting of the annular plate to be separated from a forming workpiece, one side of the die grooves is fixedly provided with a circular plate, a circular plate is fixedly connected with the liquid injection gun is arranged in the circular cavity, and the circular plate is fixedly connected with the liquid injection gun is rotatably arranged in the circular cavity, and the circular plate is fixedly connected with the liquid injection gun. Preferably, the pushing piece comprises a U-shaped rod positioned in the circular cavity, two side plates of the U-shaped rod penetrate through the die groove and are fixedly connected with the annular plate, and one side of the U-shaped rod positioned in the circular cavity is fixedly connected with an L-shaped sliding rod. Prefe