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CN-121973385-A - Injection molding device for automobile parts

CN121973385ACN 121973385 ACN121973385 ACN 121973385ACN-121973385-A

Abstract

The invention belongs to the technical field of injection molding, in particular to an injection molding device for automobile parts, which comprises a workbench, an injection molding assembly, a molding assembly and an air extraction assembly, wherein the injection molding assembly and the molding assembly are respectively arranged on two sides of the top of the workbench, the injection molding assembly comprises an injection molding device, an injection molding pipe is fixed on the output end of the injection molding device, the molding assembly comprises a molding die, an injection molding hole matched with the injection molding pipe is arranged on the side wall of the molding die, the injection molding hole is communicated with a cavity in the molding die, the air extraction assembly is arranged on the side edge of the molding die and is used for extracting air in the cavity.

Inventors

  • SUN QIANG
  • JI JIANXIN
  • SUN HANLIANG

Assignees

  • 苏州万安电子科技有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (9)

  1. 1. The injection molding device for the automobile parts is characterized by comprising a workbench (1), an injection molding assembly, a molding assembly and an air exhaust assembly, wherein the injection molding assembly and the molding assembly are respectively arranged at two sides of the top of the workbench (1); The injection molding assembly comprises an injection molding device (3), and an injection molding pipe (23) is fixed on the output end of the injection molding device (3); The molding assembly comprises a molding die (9), an injection hole (14) matched with an injection pipe (23) is formed in the side wall of the molding die (9), and the injection hole (14) is communicated with a cavity (11) in the molding die (9); The workbench (1) is provided with a moving assembly, the injection molding assembly is arranged on the moving assembly, and the moving assembly drives the injection molding assembly to horizontally reciprocate so as to control the connection or disconnection of the injection molding pipe (23) and the injection molding hole (14); The air extraction component is arranged on the side edge of the forming die (9) and is used for extracting air in the cavity (11).
  2. 2. The injection molding device for automobile parts according to claim 1, further comprising a mounting assembly for mounting and supporting the injection molding assembly, wherein the mounting assembly comprises a base (4) fixed on the top of the workbench (1), a double-disc coaxial frame (5) is rotatably mounted above the base (4), the double-disc coaxial frame (5) is fixedly formed by a pair of turntables and a central shaft, a motor (13) for driving the double-disc coaxial frame (5) to rotate is fixed on the base (4), hydraulic telescopic rods (10) are respectively fixed on opposite side walls of two turntables on two sides of the double-disc coaxial frame (5), two half dies of a molding die (9) are driven to fold or separate through the two hydraulic telescopic rods (10), and the injection molding assembly is provided with a plurality of groups and is uniformly mounted in the middle of the double-disc coaxial frame (5) through the hydraulic telescopic rods (10).
  3. 3. The injection molding device for automobile parts according to claim 2, wherein the air extraction assembly comprises an annular groove (6) fixed on the outer wall of a turntable of the double-disc coaxial frame (5), a rotating cover (7) is installed on the side wall of the annular groove (6) in a sealing and rotating mode, a connecting pipe (8) is fixed on the rotating cover (7), the connecting pipe (8) is connected with an external negative pressure device, a hose (12) is fixed on the side wall of the turntable of the double-disc coaxial frame (5), one end of the hose (12) is communicated with the annular groove (6), and the other end of the hose (12) is communicated with a cavity (11) of the molding die (9).
  4. 4. An injection molding device for automobile parts according to claim 3, wherein the moving assembly comprises an electric guide rail (2) fixedly arranged on the workbench (1), the injection molding assembly is fixedly arranged above the electric guide rail (2), and the injection molding assembly is driven to be in butt joint with or separated from an injection mold through the electric guide rail (2).
  5. 5. The injection molding device for automobile parts according to claim 4, wherein a movable cavity (22) is arranged in the inner wall of the connecting position of the molding die (9) and the hose (12), one end of the movable cavity (22) is communicated with the hose (12), an air hole (20) communicated with the cavity (11) is formed in the other end of the movable cavity (22), a blocking head (19) is arranged at the air hole (20), the blocking head (19) is in sealing sliding insertion connection with the inside of the air hole (20), a limiting plate (27) is fixed at one end, facing the movable cavity (22), of the blocking head (19), a baffle ring (26) is fixed inside the movable cavity (22), a second spring (21) is fixed between the baffle ring (26) and the limiting plate (27), and one end, far away from the movable cavity (22), of the blocking head (19) is matched with the contour of the inner wall of the cavity (11).
  6. 6. The injection molding device for automobile parts according to claim 5, wherein the injection molding hole (14) is formed by combining corresponding grooves on two half molds, movable plates (17) are respectively arranged on the inner walls of the grooves on two sides in a sliding mode, the movable plates (17) are arranged in movable grooves (15) formed in the inner parts of the half molds in a sliding mode, and springs (16) for enabling the movable plates (17) to reset are arranged in the movable grooves (15).
  7. 7. An injection molding apparatus for automobile parts according to claim 6, wherein triangular plates (18) are vertically fixed to the middle positions of the movable plates (17) on both sides, respectively.
  8. 8. An injection molding apparatus for automotive parts according to claim 1, characterized in that the outer part of the injection tube (23) is sheathed with a heating jacket (25).
  9. 9. An injection molding apparatus for an automobile part according to claim 8, wherein the heating jacket (25) is slidably fitted over the injection pipe (23), and a spring three (24) for returning the heating jacket (25) is mounted on a side wall of the heating jacket.

Description

Injection molding device for automobile parts Technical Field The invention belongs to the technical field of injection molding, and particularly relates to an injection molding device for automobile parts. Background Injection molding is also called injection molding, is a molding processing method integrating injection and molding, and is widely applied to the field of processing parts with complex shapes and mass production by virtue of the advantages of high molding efficiency, strong adaptability, controllable product precision and the like. In the automobile production manufacturing link, a large number of interior, exterior and functional plastic parts, such as instrument panels, lamp covers, buckles, shells and the like, are required to be processed through an injection molding process, and an injection molding device is core equipment for producing the automobile plastic parts, and the running stability and the molding quality of the injection molding device directly determine the quality of finished products of the automobile plastic parts. Among the prior art, patent CN211165159U discloses an injection molding device for automobile plastic parts production, and the device mainly includes device main part, first motor, first pivot, push roll, feed cylinder, mould main part, first mould and structure such as support arm. Wherein, first motor is installed on one side of device main part top, and the material section of thick bamboo is fixed in the device main part top of corresponding side, and first motor output passes through the first pivot of shaft coupling connection, and the push roll links to each other with first pivot and extends to the material section of thick bamboo inside, and the mould main part is fixed in device main part one side outer wall, and first mould is installed in the mould main part inner wall, and the support arm is fixed inside the mould main part. The existing device aims at reducing the labor intensity of workers, improving the molding quality and the production efficiency of products, and has certain applicability in conventional injection molding production. However, the technology has the defects that after the die assembly and the butt joint of the injection mold are completed, air in the mold cavity cannot be timely and smoothly discharged, and a series of molding quality problems are easily caused. On one hand, the unsmooth exhaust of the cavity can lead to the blocking of filling of the plastic melt, the problems of insufficient injection quantity and incomplete filling of the cavity occur, defective products such as part shortage, profile defect and the like are directly caused, on the other hand, the unsmooth exhaust can lead to the formation of high pressure by residual gas in the cavity, the high pressure gas is continuously compressed in the melt injection process and then permeates into the plastic melt, finally, the formed automobile plastic part has the quality defects such as hollows, air holes, loose tissues, silver lines and the like, the structural strength, the appearance integrity and the service performance of the part are seriously influenced, and the use requirements of high precision and high stability of the automobile part are difficult to meet. To this end, the invention provides an injection molding device for automotive parts. Disclosure of Invention In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The invention solves the technical problems by adopting the technical scheme that the injection molding device for the automobile parts comprises a workbench, an injection molding assembly, a molding assembly and an air exhaust assembly, wherein the injection molding assembly and the molding assembly are respectively arranged at two sides of the top of the workbench; The injection molding assembly comprises an injection molding device, and an injection molding pipe is fixed on the output end of the injection molding device; the molding assembly comprises a molding die, an injection hole matched with the injection pipe is formed in the side wall of the molding die, and the injection hole is communicated with a cavity in the molding die; The workbench is provided with a moving assembly, the injection molding assembly is arranged on the moving assembly, and the moving assembly drives the injection molding assembly to horizontally reciprocate so as to control the connection or disconnection of the injection molding pipe and the injection molding hole; the air extraction component is arranged on the side edge of the forming die and is used for extracting air in the cavity. Preferably, the injection molding machine further comprises a mounting assembly, wherein the mounting assembly is used for mounting and supporting the injection molding assembly, the mounting assembly comprises a base fixed at the top of the workbench, a double-disc coaxial frame is rotatably mounted a