A core-pulling and position-retreating injection mold for a two-color injection molding machine

Abstract

The utility model discloses a kind of core-pulling displacement injection mould for double-color injection molding machine, comprising: core-pulling transmission sliding block seat, core-pulling transmission guide slot, core-pulling transmission inclined wedge, rear mould kernel, forming cavity, forming sliding slot, core-pulling sliding block, transmission guide inclined plane, forming insert. By the above mode, the utility model a kind of core-pulling displacement injection mould for double-color injection molding machine, adopts the structure of core-pulling sliding block displacement, reset injection, solves the problem of mould thin steel insertion, so that the structure of product is more stable, effectively improve the yield of product, improve the safety of production.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a core-pulling and ejection injection mold for a two-color injection molding machine. Background Technology

[0002] When molding two-color injection parts using a two-color injection molding machine, the mold is a fixed structure. Therefore, when molding one color, the thin steel of the mold can easily penetrate the sealant, which seriously affects the quality of the injection molding and reduces the yield of the products. Therefore, improvements are needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0004] A core-pulling and ejection injection mold for a two-color injection molding machine is provided. Installed within the machine, it moves between a single-color molding station and a two-color molding station under the drive of the rear mold base. The mold includes: a core-pulling drive slide block seat, a core-pulling drive guide groove, a core-pulling drive wedge, a rear mold core, a molding cavity, a molding groove, a core-pulling slide block, a drive guide slope, and a molding insert.

[0005] The outer end of the core-pulling drive slider seat located on the rear mold base is provided with the core-pulling drive guide groove. The core-pulling drive guide groove is provided with an exit drive inclined guide surface and an extension drive inclined guide surface, which are respectively movably connected to the single-color front mold shovel or the two-color front mold shovel in a two-color injection molding machine to drive the core-pulling drive slider seat to extend or retract. The inner end of the core-pulling drive slider seat is provided with the core-pulling drive inclined wedge.

[0006] The rear mold core is mounted on the rear mold base. The molding cavity and the molding groove are disposed on the rear mold core. The molding groove is connected to the lower part of the molding cavity. The upper part of the core-pulling slider is movably disposed in the molding groove. The top of the core-pulling slider is connected to the molding insert so that injection molding can be performed through the cooperation of the molding insert and the molding cavity. The bottom of the core-pulling slider is provided with the transmission guide slope so as to be movably connected with the core-pulling transmission wedge, so that the core-pulling slider and the molding insert move up and down in the molding groove under the push of the core-pulling transmission wedge.

[0007] In a preferred embodiment of this utility model, the rear mold base is provided with a sliding guide mechanism that is movably connected to the core-pulling transmission slider base.

[0008] In a preferred embodiment of this utility model, the exit drive inclined guide surface and the insertion drive inclined guide surface are symmetrically arranged in the core pulling transmission guide groove, so that the core pulling transmission guide groove forms a funnel-shaped structure; wherein, the exit drive inclined guide surface contacts the single-color front mold shovel for exit, and the insertion drive inclined guide surface contacts the double-color front mold shovel for insertion.

[0009] In a preferred embodiment of this utility model, the core-pulling transmission wedge is detachably mounted on the inclined surface of the core-pulling transmission slider seat by screws.

[0010] In a preferred embodiment of this utility model, the molded insert is fixedly connected to the top of the core-pulling slider by screws.

[0011] In a preferred embodiment of the present invention, the core-pulling slider protrudes and is provided with a stop portion that is movably connected to the rear mold core.

[0012] The beneficial effects of this utility model are: by adopting the structure of core-pulling slider retraction and reset injection molding, the problem of thin steel insertion in the mold is solved, making the product structure more stable, effectively improving the product yield and improving production safety. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0014] Figure 1 This is a schematic diagram of a preferred embodiment of a core-pulling and retraction injection mold for a two-color injection molding machine according to the present invention;

[0015] Figure 2 This is a schematic diagram of the exit state of a core-pulling and retracting injection mold for a two-color injection molding machine according to this utility model;

[0016] Figure 3 This is a schematic diagram of the extended state of a core-pulling and retracting injection mold for a two-color injection molding machine according to this utility model. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Please see Figure 1-3 The embodiments of this utility model include:

[0019] A core-pulling and ejection injection mold for a two-color injection molding machine is installed inside the two-color injection molding machine 20 and moves between the molding station for one color and the molding station for two colors under the drive of the rear mold base 30 in the two-color injection molding machine. Its structure includes: core-pulling transmission slider seat 1, core-pulling transmission guide groove 2, core-pulling transmission wedge 3, rear mold core 4, molding cavity 5, molding slide 6, core-pulling slider 7, transmission guide slope, and molding insert 8.

[0020] Two-color injection molding machines are existing technology; this application involves improvements to the mold, not improvements to the injection molding machine.

[0021] The core-pulling drive slider seat is movably mounted on the rear mold base of the two-color injection molding machine. A core-pulling drive guide groove is provided on the outer end of the core-pulling drive slider seat. A retraction drive inclined guide surface 10 and an insertion drive inclined guide surface 11 are symmetrically arranged in the core-pulling drive guide groove, so as to be movably connected to the single-color front mold shovel 40 or the two-color front mold shovel 50 in the two-color injection molding machine, so that the core-pulling drive slider seat extends or retracts under the action of the core-pulling drive guide groove and the single-color front mold shovel or the two-color front mold shovel. A core-pulling drive inclined wedge is provided on the inner end of the core-pulling drive slider seat.

[0022] In some embodiments of this application, the rear mold base is provided with a sliding guide mechanism, such as a slide rail or guide rod, which is movably connected to the core-pulling transmission slider base.

[0023] In some embodiments of this application, the core-pulling drive guide groove has a funnel-shaped structure, and the exit drive inclined guide surface is located outside the insertion drive inclined guide surface, which helps the single-color front mold shovel or the two-color front mold shovel to extend and retract, so as to ensure the accuracy of the drive.

[0024] In some embodiments of this application, the core-pulling drive wedge is detachably mounted on the inclined surface of the core-pulling drive slider seat by screws.

[0025] The rear mold core is installed on the rear mold base. The molding cavity and molding groove are set on the rear mold core. The molding groove is located below the molding cavity, and the top of the molding groove is connected to the molding cavity. The upper part of the core-pulling slider is movably set in the molding groove, and the top of the core-pulling slider is connected to a molding insert so that injection molding can be performed through the cooperation of the molding insert and the molding cavity. The bottom of the core-pulling slider is provided with a transmission guide slope, which is movably connected to the core-pulling transmission wedge, so that the core-pulling slider and the molding insert move up and down in the molding groove under the push of the core-pulling transmission wedge.

[0026] In some embodiments of this application, the molding insert is fixedly connected to the top of the core-pulling slider by screws. The screws are those with only a slotted notch on the top surface to reduce the impact on the product injection molding process and prevent dents.

[0027] In some embodiments of this application, the core-pulling slider protrudes and is provided with a stop portion that is movably connected to the rear mold core to limit the maximum upward displacement distance of the core-pulling slider.

[0028] The working principle of core-pulling and ejection injection molds includes:

[0029] During the injection molding of a single color, as the mold closes, the single-color front mold shovel mounted on the front mold base 60 gradually inserts into the core-pulling transmission guide groove of the core-pulling transmission slider seat and contacts the exit drive inclined guide surface, causing the core-pulling transmission slider seat and the core-pulling transmission inclined wedge to exit outward. This causes the core-pulling insert and the core-pulling slider to move downward and retract, thus creating a retraction clearance and making room for the thin steel position of the front mold core, allowing the front mold core to have more space to reinforce the steel material (the steel material of the front mold core of the two-color mold is different).

[0030] After the first color injection is completed, the rear mold base drives the entire core-pulling and retracting injection mold to rotate 180° to the second color injection station.

[0031] During two-color injection molding, as the mold closes, the two-color front mold shovel mounted on the front mold base gradually inserts into the core-pulling transmission guide groove of the core-pulling transmission slider seat and contacts the extended drive inclined guide surface. This causes the core-pulling transmission slider seat and the core-pulling transmission inclined wedge to extend inward, allowing the core-pulling insert and the core-pulling slide to move upward and reset. This ensures that the core-pulling slider insert fits and maintains consistency with the two-color product and participates in sealing (since the front mold core steel material of the two-color mold is inconsistent), forming a reset sealing to complete the two-color injection molding.

[0032] The beneficial effects of this utility model of a core-pulling and retraction injection mold for a two-color injection molding machine are: when the product cannot be optimized, the structure of core-pulling slider retraction and resetting injection solves the problem of thin steel penetration in the mold, making the product structure more stable, effectively improving the product yield and production safety.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A core-pulling and ejection injection mold for a two-color injection molding machine, installed inside the two-color injection molding machine, and moving and switching between a one-color molding station and a two-color molding station under the drive of the rear mold base, characterized in that, include: Core-pulling drive slider seat, core-pulling drive guide groove, core-pulling drive wedge, rear mold core, molding cavity, molding slide, core-pulling slider, drive guide slope, molding insert. The outer end of the core-pulling drive slider seat located on the rear mold base is provided with the core-pulling drive guide groove. The core-pulling drive guide groove is provided with an exit drive inclined guide surface and an extension drive inclined guide surface, which are respectively movably connected to the single-color front mold shovel or the two-color front mold shovel in a two-color injection molding machine to drive the core-pulling drive slider seat to extend or retract. The inner end of the core-pulling drive slider seat is provided with the core-pulling drive inclined wedge. The rear mold core is mounted on the rear mold base. The molding cavity and the molding groove are disposed on the rear mold core. The molding groove is connected to the lower part of the molding cavity. The upper part of the core-pulling slider is movably disposed in the molding groove. The top of the core-pulling slider is connected to the molding insert so that injection molding can be performed through the cooperation of the molding insert and the molding cavity. The bottom of the core-pulling slider is provided with the transmission guide slope so as to be movably connected with the core-pulling transmission wedge, so that the core-pulling slider and the molding insert move up and down in the molding groove under the push of the core-pulling transmission wedge.

2. The core-pulling and ejection injection mold for a two-color injection molding machine according to claim 1, characterized in that, The rear mold base is provided with a sliding guide mechanism that is movably connected to the core-pulling transmission slider base.

3. The core-drawing and position-withdrawing injection mold for a two-color injection molding machine according to claim 1, wherein The exit drive inclined guide surface and the insertion drive inclined guide surface are symmetrically arranged in the core pulling transmission guide groove, so that the core pulling transmission guide groove forms a funnel-shaped structure; wherein, the exit drive inclined guide surface contacts the single-color front mold shovel for exit, and the insertion drive inclined guide surface contacts the double-color front mold shovel for insertion.

4. The core-drawing and position-withdrawing injection mold for a two-color injection molding machine according to claim 1, wherein The core-pulling drive wedge is detachably mounted on the inclined surface of the core-pulling drive slider seat by screws.

5. The core-drawing displacement injection mold for a two-color injection molding machine according to claim 1, wherein The molded insert is fixedly connected to the top of the core-pulling slider by screws.

6. The core-drawing displacement injection mold for a two-color injection molding machine according to claim 1, wherein The core-pulling slider has a stop portion that is movably connected to the rear mold core.

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