Front mold core-pulling structure based on three-plate mold

Abstract

The utility model discloses a front mold core-pulling structure based on a three-plate mold, which comprises a panel, a water gap plate arranged at the lower end of the panel, a convex water gap plate insert arranged on the lower end face of the water gap plate, a plate A arranged at the lower end of the water gap plate, and a front mold core arranged on the lower end face of the plate A, a runner plate correspondingly matched with the stripper plate insert is arranged on the upper end face of the front mold core, a core-pulling insert which is vertically arranged and penetrates through the front mold core is arranged at the upper end of the runner plate, the core-pulling insert is arranged at the upper end of the runner plate through an insert pressing block, and a plurality of core-pulling springs which are vertically arranged are arranged between the runner plate and the front mold core. The utility model has the advantages of novel design, simple structure, low cost, easy control of segment difference and cloak running phenomenon, stability and high efficiency, and effective prevention of strain and height.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a front mold core-pulling structure based on a three-plate mold. Background Technology

[0002] Due to the product's unique structure, with a deep internal through-hole and no draft angle, the front and rear molds need to be sealed with adhesive through the hole. The conventional approach is to eject the ejector sleeve while keeping the internal pin stationary. The drawback of this structure is its high cost.

[0003] The sleeve structure has the following disadvantages:

[0004] 1. The ejector sleeve and the inner needle of the ejector sleeve need to be customized, which results in high processing costs and long lead times;

[0005] 2: The needle inside the ejector sleeve is prone to phenomena such as slippage and step difference;

[0006] 3: The needle inside the sleeve being punctured requires high skill from the fitter in mold making;

[0007] 4. Difficult to replace molds during production and time-consuming to re-fit molds;

[0008] 5: When the ejector sleeve pushes out the product, the product separated from the needle inside the ejector sleeve is prone to tearing and pulling up. Utility Model Content

[0009] The purpose of this utility model is to provide a front mold core-pulling structure based on a three-plate mold to address the shortcomings of the existing technology. This front mold core-pulling structure based on a three-plate mold has a novel design, simple structure, low cost, easy control of step difference and taut running phenomenon, stable and efficient, and effectively prevents the occurrence of tearing and pulling phenomenon.

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0011] A front mold core-pulling structure based on a three-plate mold includes a panel, a sprue plate installed at the lower end of the panel, and a sprue plate insert arranged in a convex shape installed on the lower end face of the sprue plate. An A plate is installed at the lower end of the sprue plate, and a front mold core is installed on the lower end face of the A plate. A runner plate corresponding to and matching the sprue plate insert is installed on the upper end face of the front mold core. A core-pulling insert arranged vertically and penetrating the front mold core is installed on the upper end of the runner plate. The core-pulling insert is installed on the upper end of the runner plate through an insert clamping block. Several core-pulling springs arranged vertically are installed between the runner plate and the front mold core.

[0012] Among them, a number of vertically arranged inner tie rods are installed between the panel and the A plate.

[0013] The upper surface of plate A is provided with a receiving groove that corresponds to and matches the sprue plate insert and the flow channel plate.

[0014] The flow channel plate and the front mold core are provided with vertically arranged guide pins.

[0015] The beneficial effects of this utility model are as follows: The front mold core-pulling structure based on a three-plate mold described in this utility model includes a panel, a sprue plate installed at the lower end of the panel, and a sprue plate insert arranged in a convex shape installed on the lower end face of the sprue plate. An A plate is installed at the lower end of the sprue plate, and a front mold core is installed on the lower end face of the A plate. A runner plate corresponding to and matching the sprue plate insert is installed on the upper end face of the front mold core. A core-pulling insert arranged vertically and penetrating the front mold core is installed on the upper end of the runner plate. The core-pulling insert is installed on the upper end of the runner plate through an insert pressure block. Several core-pulling springs arranged vertically are installed between the runner plate and the front mold core. This invention features a runner plate that matches the sprue plate insert on the upper surface of the front mold core. A vertically arranged core-pulling insert, penetrating the front mold core, is mounted on the upper surface of the runner plate. The core-pulling insert is secured to the upper surface of the runner plate by an insert clamping block. Several vertically arranged core-pulling springs are installed between the runner plate and the front mold core. When the mold opens, the panel opens upwards, and the sprue plate and sprue plate insert move upwards first. As the sprue plate insert moves upwards, it separates from the runner plate. Under the action of the core-pulling springs, the core-pulling insert pulls upwards first, and then, under the action of the inner tie rod, the A-plate opens again. This achieves core pulling of the front mold, resulting in low cost, easy control of step differences and runout phenomena, stability, high efficiency, and effective prevention of tearing and stretching. Therefore, this invention has the advantages of novel design, simple structure, low cost, easy control of step differences and runout phenomena, stability, high efficiency, and effective prevention of tearing and stretching. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the present invention.

[0019] exist Figure 1-2 This includes:

[0020] 1 - Panel 11 - Sprue Plate

[0021] 111 - Sprue plate insert 12 - Plate A

[0022] 121 - Receiving groove 13 - Front mold core

[0023] 14—Flow channel plate 141—Guide pin

[0024] 15 - Core-pulling insert; 151 - Insert pressing block

[0025] 16 - Pull-out spring; 17 - Inner pull rod. Detailed Implementation

[0026] The present invention will now be described in conjunction with specific embodiments.

[0027] like Figure 1-2 As shown, a front mold core-pulling structure based on a three-plate mold includes a panel 1, a sprue plate 11 installed at the lower end of the panel 1, and a sprue plate insert 111 arranged in a convex shape installed on the lower end face of the sprue plate 11. An A plate 12 is installed at the lower end of the sprue plate 11, and a front mold core 13 is installed on the lower end face of the A plate 12. A runner plate 14 corresponding to and matching the sprue plate insert 111 is installed on the upper end face of the front mold core 13, and a core-pulling insert 15 arranged vertically and penetrating the front mold core 13 is installed on the upper end of the runner plate 14. The core-pulling insert 15 is installed on the upper end of the runner plate 14 through an insert pressure block 151. A plurality of core-pulling springs 16 arranged vertically are installed between the runner plate 14 and the front mold core 13.

[0028] Furthermore, a plurality of vertically arranged inner tie rods 17 are installed between the panel 1 and the A plate 12.

[0029] Furthermore, the upper surface of the A plate 12 is provided with a receiving groove 121 that corresponds to and matches the sprue plate insert 111 and the flow channel plate 14.

[0030] Furthermore, a vertically arranged guide pin 141 is installed between the flow channel plate 14 and the front mold core 13.

[0031] This invention features a runner plate 14, corresponding to and matching the sprue plate insert 111, mounted on the upper surface of the front mold core 13. A vertically arranged core-pulling insert 15, penetrating the front mold core 13, is mounted on the upper end of the runner plate 14. The core-pulling insert 15 is mounted on the upper end of the runner plate 14 via an insert clamping block 151. Several vertically arranged core-pulling springs 16 are installed between the runner plate 14 and the front mold core 13. When the mold opens, the panel 1 opens upwards, and the sprue plate 11 and the sprue plate insert 111 move upwards first. Due to the upward movement of the sprue plate insert 111... The upward movement separates it from the runner plate 14. Under the action of the core-pulling spring 16, the core-pulling insert 15 pulls the core upward first, and then under the action of the inner tie rod 17, the A plate 12 opens the mold again, thus realizing the core pulling of the front mold. It has low cost, easy control of step difference and runaway phenomena, stable and efficient, and effectively prevents the occurrence of tearing and pulling. Therefore, this utility model has the advantages of novel design, simple structure, low cost, easy control of step difference and runaway phenomena, stable and efficient, and effective prevention of tearing and pulling.

[0032] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A front mold core-pulling structure based on a three-plate mold, characterized in that: The device includes a panel (1), a sprue plate (11) is installed at the lower end of the panel (1), and a sprue plate insert (111) is installed on the lower end of the sprue plate (11). An A plate (12) is installed at the lower end of the sprue plate (11), and a front mold core (13) is installed on the lower end of the A plate (12). A runner plate (14) that matches the sprue plate insert (111) is installed on the upper end of the front mold core (13). A core-pulling insert (15) that is vertically arranged and penetrates the front mold core (13) is installed on the upper end of the runner plate (14). The core-pulling insert (15) is installed on the upper end of the runner plate (14) through the insert pressure block (151). Several core-pulling springs (16) that are vertically arranged are installed between the runner plate (14) and the front mold core (13).

2. The front mold core-pulling structure based on a three-plate mold according to claim 1, characterized in that: A plurality of vertically arranged inner tie rods (17) are installed between the panel (1) and the A plate (12).

3. The front mold core-pulling structure based on a three-plate mold according to claim 1, characterized in that: The upper surface of the A plate (12) is provided with a receiving groove (121) that corresponds to and matches the sprue plate insert (111) and the flow channel plate (14).

4. The front mold core-pulling structure based on a three-plate mold according to claim 1, characterized in that: A guide pin (141) arranged vertically is installed between the flow channel plate (14) and the front mold core (13).

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