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CN-224210399-U - Injection mechanism of injection molding machine

CN224210399UCN 224210399 UCN224210399 UCN 224210399UCN-224210399-U

Abstract

The utility model discloses an injection mechanism of an injection molding machine, which relates to the technical field of injection molding machines and comprises a charging barrel, wherein the front end of the charging barrel is fixedly connected with an injection molding pipe, the front end of the injection molding pipe is movably connected with a connecting pipe, the front end of the connecting pipe is provided with the injection pipe, the inner side of the connecting pipe is movably connected with the outer side of the injection pipe, the outer side of the injection molding pipe is provided with a cutting assembly, a group of symmetrical connecting rods are fixedly connected on the cutting assembly, the connecting rods are fixedly connected with the outer side of the injection pipe, the cutting assembly comprises cutters, and the cutters are symmetrically arranged. The cutting assembly is arranged, so that the two cutters are close to each other while the connecting pipe is far away from the injection pipe, and the cooled raw material cylinder exposed between the connecting pipe and the injection pipe is conveniently cut off, thereby being beneficial to better demolding and separation of a molded part in a mold and avoiding damage to the molded part caused by the fact that the part positioned in the injection pipe is involved in the demolding process of the molded part.

Inventors

  • XUE BO

Assignees

  • 宁波海洲机械有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (7)

  1. 1. The injection mechanism of the injection molding machine comprises a charging barrel (1) and is characterized in that the front end of the charging barrel (1) is fixedly connected with an injection molding pipe (2), the front end of the injection molding pipe (2) is movably connected with a connecting pipe (3), the front end of the connecting pipe (3) is provided with an injection pipe (4), the inner side of the connecting pipe (3) is movably connected with the outer side of the injection pipe (4), the outer side of the injection molding pipe (2) is provided with a cutting assembly (5), a group of symmetrical connecting rods (6) are fixedly connected to the cutting assembly (5), the connecting rods (6) are fixedly connected with the outer side of the injection pipe (4), the cutting assembly (5) comprises cutters (501), the cutters (501) are symmetrically arranged, the connecting pipe (3) are located between the cutters (501), one end of the cutting assembly (5) is connected with the outer side of the connecting pipe (3), the inner side of the charging barrel (1) is movably connected with a pushing screw (7), and the middle section of the charging barrel (1) is provided with a stirring assembly (8).
  2. 2. The injection mechanism of claim 1, wherein the cutting assembly (5) further comprises a supporting frame (502), a sliding block (503), a supporting rod (504) and a connecting rod (505), the supporting frame (502), the sliding block (503), the supporting rod (504) and the connecting rod (505) are symmetrically arranged, the sliding block (503) is respectively and slidably connected to the inner side of the supporting frame (502), the supporting rod (504) is respectively and fixedly connected with one side of the sliding block (503), one end of the connecting rod (505) is respectively and movably connected with the other side of the sliding block (503) through a rotating shaft, the other end of the connecting rod (505) is movably connected with the outer side of the connecting pipe (3) through the rotating shaft, and the supporting rod (504) is respectively and fixedly connected with the cutter (501).
  3. 3. The injection mechanism of an injection molding machine according to claim 2, wherein guide rods (9) are fixedly connected to the inner side of the supporting frame (502), the guide rods (9) penetrate through the sliding blocks (503), the guide rods (9) are movably connected with the sliding blocks (503), return springs (10) are sleeved on the outer sides of the guide rods (9), one ends of the return springs (10) are fixedly connected with the inner side of the supporting frame (502), and the other ends of the return springs (10) are fixedly connected with the outer sides of the sliding blocks (503).
  4. 4. The injection mechanism of claim 3, wherein the supporting frames (502) are fixedly connected to the outer sides of the injection pipes (2), a group of symmetrical through holes (11) are formed in the outer sides of the connecting pipes (3), one ends of the supporting frames (502) are respectively connected with the through holes (11) in a sliding mode, a group of symmetrical hydraulic rods (12) are fixedly connected to the outer sides of the injection pipes (2), and telescopic ends of the hydraulic rods (12) are fixedly connected with the end portions of the connecting pipes (3).
  5. 5. The injection mechanism of an injection molding machine according to claim 1, wherein a plurality of groups of stirring rods I (13) are fixedly connected to the middle section of the pushing screw (7), and each group of stirring rods I (13) is distributed in a circular array.
  6. 6. The injection mechanism of an injection molding machine according to claim 5, wherein the stirring assembly (8) comprises a connecting cylinder (801), a stirring rod II (802), a toothed ring (803), a gear (804) and a containing box (805), the toothed ring (803) is fixedly connected to the outer side of the connecting cylinder (801), the gear (804) is movably connected to the inside of the containing box (805) through a rotating shaft, the gear (804) is meshed with the toothed ring (803), the stirring rod II (802) is arranged in a plurality of groups, and each group of stirring rod II (802) is distributed in a circular array.
  7. 7. The injection mechanism of claim 6, wherein the connecting cylinder (801) and the toothed ring (803) are movably connected to the inside of the charging cylinder (1), the accommodating box (805) is fixedly connected to the outer side of the charging cylinder (1), the stirring rods I (13) and II (802) are distributed in a staggered manner, the outer side of the charging cylinder (1) is fixedly connected with a servo motor (14), and the output end of the servo motor (14) is fixedly connected with a rotating shaft of the gear (804).

Description

Injection mechanism of injection molding machine Technical Field The utility model relates to the technical field of injection molding machines, in particular to an injection mechanism of an injection molding machine. Background The injection molding machine is a plastic processing device widely used in modern industrial production, and is mainly used for injecting plastic raw materials in a molten state into a mold through an injection mechanism, cooling and solidifying to obtain a required plastic product, wherein the injection mechanism is used as a core part of the injection molding machine, and the performance of the injection mechanism directly influences the molding quality and the production efficiency of the product. However, the existing injection molding machine injection mechanism has a certain defect in the process of injecting raw materials into a mold, after the raw materials are injected into the mold, the raw materials are prevented from excessively accumulating in the mold, the molding effect is affected, meanwhile, when molded parts in the mold are prevented from being separated, the cooled raw materials positioned in the injection mechanism are connected with the molded parts to cause the damage of the molded parts, and the raw materials are generally fully mixed in a melting section when being positioned in a charging barrel, the mixing section of the middle section of a common charging barrel is smaller, and the mixing of large-particle raw materials is easy to be uneven. Disclosure of utility model The application aims to solve the technical problems that the formed part is prevented from being damaged in the drawing process in the part of the injection pipe in the demoulding process of the formed part by the arranged cutting assembly, and the raw materials can be continuously and frequently mixed in the range of one end of the charging barrel by the arranged stirring assembly, so that the molten raw materials are uniformly mixed. In order to solve the technical problems, the embodiment of the application provides an injection mechanism of an injection molding machine, which comprises a charging barrel, wherein the front end of the charging barrel is fixedly connected with an injection molding pipe, the front end of the injection molding pipe is movably connected with a connecting pipe, the front end of the connecting pipe is provided with an injection pipe, the inner side of the connecting pipe is movably connected with the outer side of the injection pipe, the outer side of the injection molding pipe is provided with a cutting assembly, a group of symmetrical connecting rods are fixedly connected on the cutting assembly, the connecting rods are fixedly connected with the outer side of the injection pipe, the cutting assembly comprises cutters, the cutters are symmetrically arranged, the connecting pipe is positioned between the cutters, one end of the cutting assembly is connected with the outer side of the connecting pipe, the inner side of the charging barrel is movably connected with a pushing screw, and the middle section of the charging barrel is provided with a stirring assembly. The cutting assembly is further arranged, the cutting assembly further comprises a supporting frame, a sliding block, a supporting rod and a connecting rod, the supporting frame, the sliding block, the supporting rod and the connecting rod are symmetrically arranged, the sliding block is respectively and slidably connected to the inner side of the supporting frame, the supporting rod is respectively and fixedly connected with one side of the sliding block, one end of the connecting rod is respectively and movably connected with the other side of the sliding block through a rotating shaft, the other end of the connecting rod is respectively and movably connected with the outer side of the connecting pipe through the rotating shaft, and the supporting rod is respectively and fixedly connected with the cutter. The utility model is further arranged that the inner sides of the supporting frames are fixedly connected with guide rods, the guide rods penetrate through the sliding blocks and are movably connected with the sliding blocks, the outer sides of the guide rods are sleeved with reset springs, one ends of the reset springs are fixedly connected with the inner sides of the supporting frames, and the other ends of the reset springs are fixedly connected with the outer sides of the sliding blocks. The utility model is further arranged that the supporting frames are fixedly connected to the outer side of the injection molding pipe, a group of symmetrical through holes are formed in the outer side of the connecting pipe, one end of each supporting frame is respectively and slidably connected with the through holes, a group of symmetrical hydraulic rods are fixedly connected to the outer side of the injection molding pipe, and the telescopic ends of the hydraulic rods are fixedly connected with the end part