CN112659485A

CN112659485A - Convex block type submarine gate of plastic pipe fitting mold

Info

Publication number: CN112659485A
Application number: CN202011465063.6A
Authority: CN
Inventors: 张欢庆
Original assignee: Taizhou Huangyan Weida Plastic Machinery Co Ltd
Current assignee: Taizhou Huangyan Weida Plastic Machinery Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-04-16

Abstract

The plastic pipe fitting mold convex block type submarine gate comprises a mold cavity insert and a core insert, wherein a runner hole is formed in the mold cavity insert, and the plastic pipe fitting mold convex block type submarine gate is characterized in that a convex block is arranged on a parting line of the mold cavity insert close to the runner hole, a mold cavity runner is arranged between the convex block and the runner hole, a submarine gate is arranged in the convex block, a mold core runner and a groove are arranged on the corresponding mold core insert, the convex block is matched with the groove, the mold cavity runner is matched with the mold core runner, and the submarine gate is communicated with the mold cavity runner (6) and the. The main characteristics of this scheme are that set up the lug on the parting line that the die cavity was inserted, set up the runner of hiding in the lug, its advantage: when the glue inlet sprue is positioned on the parting line of the mould, molten plastic raw materials uniformly flow to two sides (a cavity side and a core side) after entering, and finally are converged together, the fusion of the convergence part is uniform, the fusion marks are few, the appearance of the pipe fitting is attractive, and the product quality and the grade are improved.

Description

Convex block type submarine gate of plastic pipe fitting mold

Technical Field

The invention relates to a convex block type submarine gate of a plastic pipe fitting mold, and belongs to the field of injection molds.

Background

Adopt injection mold production plastics pipe fitting, according to product structure and appearance analysis, the parting line of plastics pipe fitting mould all sets up the intermediate position at the plastics pipe fitting, and it advances gluey runner and all sets up the below at the parting line. However, in actual production, because it is in the parting line below to advance gluey runner, the back is injected into from the runner to the molten plastic raw materials, and the flow that flows into the die cavity from both sides is inequality, leads to two strands of plastic raw materials can not reach intersection position simultaneously, produces certain difference in temperature, produces the weld mark easily when the butt fusion, influences product appearance.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a convex block type submarine gate of a plastic pipe fitting mold, which adopts a convex block borrowing mode to enable a gate position to be positioned on a parting line, is favorable for uniform welding, reduces welding marks and improves the product quality.

The technical scheme of the lug type submarine gate of the plastic pipe fitting mold is as follows: the core insert is characterized in that a parting line of the cavity insert close to the runner hole is provided with a convex block, a cavity runner is arranged between the convex block and the runner hole, a submarine gate is arranged in the convex block, a core runner and a groove are arranged on the corresponding core insert, the convex block is matched with the groove, the cavity runner is matched with the core runner, and the submarine gate is communicated with the cavity runner (6) and the core runner.

The invention relates to a convex block type submarine gate of a plastic pipe fitting mold, which is mainly characterized in that a convex block is arranged on a parting line of a cavity insert, and a submarine gate is arranged in the convex block, and the submarine gate has the advantages that: when the glue inlet sprue is positioned on the parting line of the mould, molten plastic raw materials uniformly flow to two sides (a cavity side and a core side) after entering, and finally are converged together, the fusion of the convergence part is uniform, the fusion marks are few, the appearance of the pipe fitting is attractive, and the product quality and the grade are improved.

According to the lug type submarine gate of the plastic pipe fitting mold, the lug and the cavity insert are integrally arranged or separately welded, and the lug needs to be quenched during processing. The flow passage holes are oblique flow passage holes, and the oblique flow passage holes enable the molten plastic raw materials to flow into the submarine gate more easily.

Drawings

FIG. 1 is a schematic view of a plastic pipe die cavity insert of the present invention;

FIG. 2 is a schematic view of the plastic pipe die core insert of the present invention;

fig. 3 is a schematic structural view of a convex block type submarine gate of the plastic pipe mould.

Detailed Description

The invention relates to a convex block type submarine gate of a plastic pipe fitting mold, which comprises a mold cavity insert 1 and a core insert 2, wherein a runner hole 3 is formed in the mold cavity insert 1, a convex block 5 is arranged on a parting line 4 of the mold cavity insert close to the runner hole 3, a mold cavity runner 6 is arranged between the convex block 5 and the runner hole 3, a submarine gate 7 is arranged in the convex block, a core runner 8 and a groove 9 are arranged on the corresponding core insert 2, the convex block 5 is matched with the groove 9, the mold cavity runner 6 is matched with the core runner 8, and the submarine gate 7 is communicated with the mold cavity runner 6 and the core runner 8. The main characteristics of this scheme are that set up lug 5 on the parting line 4 that the die cavity was inserted, set up runner 7 of hiding in the lug, its advantage: when the glue inlet sprue is positioned on the parting line of the mould, molten plastic raw materials uniformly flow to two sides (a cavity side and a core side) after entering, and finally are converged together, the fusion of the convergence part is uniform, the fusion marks are few, the appearance of the pipe fitting is attractive, and the product quality and the grade are improved. The convex block 5 and the cavity insert 1 are integrally or separately welded, and the convex block needs to be quenched during processing. The runner hole 3 is an inclined runner hole, and the inclined runner hole enables the molten plastic raw material to flow into the submarine gate more easily.

Claims

1. Plastic pipe fitting mould convex block formula runner of hiding, including mould cavity insert (1) and core insert (2), system has runner hole (3) in the cavity insert (1), set up lug (5) on parting line (4) of the cavity insert of its characterized in that near runner hole (3), set up cavity runner (6) between lug (5) and runner hole (3), set up runner (7) of hiding in the lug, set up core runner (8) and recess (9) on the core insert (2) that corresponds, lug (5) cooperate with recess (9), cavity runner (6) cooperate with core runner (8), runner (7) of hiding communicate with cavity runner (6) and core runner (8).

2. The plastic pipe mold boss type submarine gate according to claim 1, wherein the boss (5) and the cavity block (1) are integrally or separately welded.

3. The male submarine gate according to claim 1, wherein the runner hole (3) is a diagonal runner hole.