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CN-224210431-U - Injection mold for injection molding

CN224210431UCN 224210431 UCN224210431 UCN 224210431UCN-224210431-U

Abstract

The utility model relates to the technical field of injection molding production, in particular to an injection mold for injection molding, which comprises a fixed mold, wherein two injection cavities are formed in the outer wall of the fixed mold, a mold core is fixedly connected in the injection cavities, a movable mold is arranged at the front end of the fixed mold in a fitting manner, injection cavities with the same structure are formed in the movable mold, an installation cavity is formed in the inner wall of the fixed mold, a cutting mechanism is arranged in the inner wall of the installation cavity, the cutting mechanism comprises an injection channel formed in the outer wall of the fixed mold, the injection channel is communicated with the injection cavity, a cutter is connected in the injection channel in a sliding manner, a pushing piece is arranged at the rear end of the cutter, a material returning piece is further arranged in the installation cavity, and an injection port is communicated in the injection channel. This device accessible cuts the setting of mechanism, can cut the rim charge of moulding plastics voluntarily when moving back the mould, separates the pipe fitting that will produce, reduces staff's operating strength.

Inventors

  • LIU YUEBO

Assignees

  • 长春奥瑞嘉汽车零部件有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (8)

  1. 1. The injection mold for the injection molding piece comprises a fixed mold (1), wherein two injection cavities (2) for producing plastic pipe fittings are formed in the outer wall of the fixed mold (1), a core (3) is fixedly connected in the injection cavities (2), a movable mold (4) is arranged at the front end of the fixed mold (1) in a fitting mode, and the movable mold (4) is provided with the injection cavities (2) with the same structure, and the injection mold is characterized in that an installation cavity (5) is formed in the inner wall of the fixed mold (1), and a cutting mechanism (6) for cutting flash edges is arranged in the inner wall of the installation cavity (5); The cutting mechanism (6) comprises an injection channel which is arranged on the outer wall of the fixed die (1) and is communicated with the injection cavity (2), a cutting knife (61) is connected in the injection channel in a sliding manner, and a pushing piece (62) is arranged at the rear end of the cutting knife (61); A material returning piece (63) for returning materials is also arranged in the mounting cavity (5); An injection port (64) for injecting molten plastic is communicated with the injection channel.
  2. 2. The injection mold for injection molding of claim 1, wherein the pushing member (62) comprises an arc plate (621) slidably connected to the inside of the fixed mold (1), and the rear end of the arc plate (621) is connected to the inner wall of the fixed mold (1) by a return spring so that the arc plate (621) always keeps a tendency of moving outwards; The top fixedly connected with connecting rod (622) of arc (621), and connecting rod (622) are L shape structure, one side fixedly connected with impact rod (623) of connecting rod (622), impact rod (623) are used for striking cut-off knife (61) and will pour into the waste material in the passageway into and decide.
  3. 3. An injection mold for injection molding according to claim 2, wherein the pushing member (62) further comprises a guide rod (624) fixed at the rear end of the cutter (61), the outer wall of the guide rod (624) is slidably connected with the inner wall of the impact rod (623), and the guide rod (624) is used for guiding the impact rod (623) to slide horizontally; Fixedly connected with bump (625) on the outer wall of shock rod (623), rotate on the outer wall of shock rod (623) and be connected with column spinner (626), the outer wall of column spinner (626) and the inner wall sliding connection of installation cavity (5), column spinner (626) are used for restricting the reset of shock rod (623), avoid influencing the operation of moulding plastics, arc wall (627) have been seted up in the inner wall of column spinner (626), arc wall (627) and bump (625) sliding connection.
  4. 4. An injection mold for injection molding according to claim 3, wherein an impact plate (628) is fixedly connected to the outer wall of the guide rod (624), a rubber layer is fixedly connected to the outer wall of the impact plate (628) for buffering impact force, and the impact plate (628) and the impact rod (623) are coaxially and horizontally arranged for bearing impact to push the cutter (61) to cut.
  5. 5. The injection mold for injection molding according to claim 3, wherein a moving plate (629) is slidably connected in the inner wall of the installation cavity (5), a moving groove (6210) with an L-shaped structure is formed in the top end of the moving plate (629), a limit post (6211) is slidably connected in the moving groove (6210), a spring telescopic rod (6212) is fixedly connected to the top end of the limit post (6211), the top end of the spring telescopic rod (6212) is of a wedge-shaped structure, and the spring telescopic rod (6212) is used for limiting the rotation of the rotary post (626); The bottom end of the rotary column (626) is fixedly connected with a limiting rod (6213), and the limiting rod (6213) and the spring telescopic rod (6212) are used for realizing unidirectional rotation of the rotary column (626).
  6. 6. The injection mold for injection molding according to claim 5, wherein two symmetrically arranged limiting holes (6214) are formed in the inner wall of the mounting cavity (5), the depths of the two limiting holes (6214) are shallow and deep, and the two limiting holes (6214) are communicated through a chute so as to realize up-and-down movement of the limiting column (6211) and release or limit the rotation state of the rotating column (626).
  7. 7. The injection mold for injection molding of claim 5, wherein the material returning member (63) comprises a hydraulic rod (631) fixed in the inner wall of the installation cavity (5), the front end of the hydraulic rod (631) is fixedly connected with a connecting plate (632), the upper end and the lower end of the connecting plate (632) are fixedly connected with pushing discs (633), and the two pushing discs (633) are in one-to-one correspondence with the two injection cavities (2); The outer walls of the two pushing discs (633) are fixedly connected with material returning rods (634) in annular arrays, and the two groups of material returning rods (634) penetrate into the injection cavity (2) respectively and are used for returning materials of plastic pipe fittings; The side wall of the pushing disc (633) is fixedly connected with the moving sheet (629).
  8. 8. The injection mold for injection molding of claim 7, wherein a material returning member (63) having the same structure as that of the fixed mold (1) is arranged on the inner wall of the movable mold (4), an L-shaped rod (635) is fixedly connected to the outer wall of a connecting plate (632) in the movable mold (4), a push plate (636) is horizontally arranged at the front end of the L-shaped rod (635), the push plate (636) extends into the inner wall of the injection passage, and the push plate (636) is used for pushing out waste materials in the injection passage; The rear end of the push plate (636) is symmetrically and fixedly connected with a spring rod (637), and the other end of the spring rod (637) is fixedly connected with the inner wall of the movable die (4).

Description

Injection mold for injection molding Technical Field The utility model relates to the technical field of injection molding production, in particular to an injection mold for injection molding. Background The injection molding is the most widely used molding process in the existing plastic pipe processing, the structure of the injection mold directly determines the molding quality, production efficiency and cost of the injection molding, and when the injection molding is affected by factors such as mold fit clearance, injection pressure, melt fluidity and the like in the conventional injection molding process, burrs and other excessive material edges exist at the pouring opening position of the injection molding. The utility model discloses an injection mold for producing plastic pipe fittings, which comprises a mounting plate, wherein one side of the bottom of the mounting plate is fixedly connected with a movable mold, two split molds are assembled at the bottom of the movable mold and matched with each other, connecting plates are arranged at the bottoms of the two split molds together, long rods are fixedly connected to two sides of the outer surface of the movable mold, linkage components are commonly installed between the two long rods and the two split molds, fixing plates are mounted on two sides of the outer surface of the connecting plates, and ejection components are commonly installed between the two fixing plates and the adjacent split molds. Disclosure of utility model The utility model aims to provide an injection mold for injection molding, which solves the problems in the prior art. In order to achieve the purpose, the injection mold for the injection molding part comprises a fixed mold, wherein two injection cavities for producing plastic pipe fittings are formed in the outer wall of the fixed mold, a core is fixedly connected in each injection cavity, a movable mold is arranged at the front end of the fixed mold in a fitting mode, injection cavities with the same structure are formed in the movable mold, an installation cavity is formed in the inner wall of the fixed mold, and a cutting mechanism for cutting flash edges is arranged in the inner wall of the installation cavity; The cutting mechanism comprises an injection channel arranged on the outer wall of the fixed die, the injection channel is communicated with the injection cavity, a cutting knife is connected in the injection channel in a sliding manner, and a pushing piece is arranged at the rear end of the cutting knife; The mounting cavity is also provided with a material returning piece for returning materials; an injection port is communicated in the injection channel. Preferably, the pushing piece comprises an arc plate which is connected in the fixed die in a sliding way, and the rear end of the arc plate is connected with the inner wall of the fixed die through a reset spring; the top fixedly connected with connecting rod of arc, and the connecting rod is L shape structure, one side fixedly connected with impact bar of connecting rod, through the setting of arc, can trigger the cut-off knife when the mould subsides, carry out the cutting off of abandonment rim charge when waiting to divide the mould. Preferably, the pushing piece further comprises a guide rod fixed at the rear end of the cutter, and the outer wall of the guide rod is in sliding connection with the inner wall of the impact rod; Fixedly connected with bump on the outer wall of impact bar, rotate on the outer wall of impact bar and be connected with the column spinner, the outer wall of column spinner and the inner wall sliding connection of installation chamber, the arc wall has been seted up in the inner wall of column spinner, arc wall and bump sliding connection, when the impact bar slides on the guide arm, the bump on the impact bar can slide in the arc wall, promotes the column spinner and rotates, through the rotation of restriction column spinner, restricts the motion of impact bar. Preferably, the outer wall of the guide rod is fixedly connected with an impact disc, the outer wall of the impact disc is fixedly connected with a rubber layer, the impact disc and the impact rod are coaxially and horizontally arranged, the impact disc is arranged, the impact disc can be impacted rapidly when the impact rod is reset and moved, the cutter is ejected, and the rim charge in front of the cutter is cut. Preferably, a moving plate is slidably connected in the inner wall of the mounting cavity, a moving groove with an L-shaped structure is formed in the top end of the moving plate, a limit column is slidably connected in the moving groove, a spring telescopic rod is fixedly connected to the top end of the limit column, and the top end of the spring telescopic rod is of a wedge-shaped structure; the bottom fixedly connected with gag lever post of column, through wedge structure's spring telescopic link, can shelter from the gag lever post for the column is restricte