CN219926792U - Semi-hot runner injection mold of sealing ring - Google Patents

Abstract

The utility model discloses a half hot runner injection mold of a sealing ring, which comprises a mold main body and a glue feeding system, wherein the glue feeding system comprises a hot runner main sprue, one end of the hot runner main sprue is provided with a feed inlet, a main runner is further arranged in the hot runner main sprue, the main runner is communicated with a glue feeding channel of the mold main body, a cold runner sub-runner is further arranged between the main runner and the glue feeding channel, and the tail end of the cold runner sub-runner is connected with a cold material well. According to the utility model, a section of cold runner sub-runner with a cold material well is added between the hot runner and the glue feeding line between the hot runner and the product, so that the cold material can be ensured to be reserved in the cold runner, and is prevented from entering the cavity of the product.

Description

Semi-hot runner injection mold of sealing ring

Technical Field

The utility model belongs to the technical field of injection molds, and particularly relates to a semi-hot runner injection mold of a sealing ring.

Background

The sealing ring is used as a sealing element for sealing a battery and is a pressure relief safety valve of the battery, along with the development of energy conservation and waste reduction of an injection molding process technology, the battery sealing ring industry mostly adopts a full hot runner mode for injection molding, and the glue inlet tip of the sealing ring is of an open structure, but in the production process, cold material residues can be generated due to the process reasons such as lower temperature of molten materials, lower mold temperature and lower injection pressure, and the residual cold material easily generates welding defects between the product cavity and normal materials after entering the product cavity, namely, the performance of the sealing ring is damaged, and then after the battery is assembled, the leakage and the leakage resistance of the battery are affected.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a semi-hot runner injection mold of a sealing ring, wherein a section of cold runner sub-runner with a cold material well is additionally arranged between a hot runner and a glue feeding line between products, so that cold material can be ensured to be reserved in the cold runner, and prevented from entering a product cavity.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a half hot runner injection mold of sealing washer, includes the mould main part and advances gluey system, advance gluey system and include that the hot runner is main to be chewed, the one end that the hot runner is main to be chewed is provided with the feed inlet, and the sprue has still been seted up to its inside, the sprue with the passageway intercommunication is glued to the advance of mould main part, the sprue with advance still be provided with cold runner subchannel between the gluey passageway, the end-to-end connection of cold runner subchannel has the cold charge well.

In one embodiment, the bottom of the cold runner is provided with a plurality of injection ports communicated with the cavity of the die body, and the injection ports are communicated with the cavity through gates.

In one embodiment, the mold body comprises a front mold and a rear mold which are sequentially overlapped up and down, a gate stripping plate is further arranged above the front mold, and the gate is arranged in the gate stripping plate.

In one embodiment, the nozzle stripper plate further has a fixing insert for fixing the gate.

In one embodiment, the glue inlet at one side of the pouring gate close to the cavity is an annular glue inlet.

In one embodiment, the mold body further comprises a movable mold core and a push block sleeved on the movable mold core, and the push block is arranged in the front mold of the mold body.

In one embodiment, a push tube is further arranged in the movable mold core, the top of the push tube is in contact with the annular glue inlet, a central needle attached to the inner wall of the push tube is further arranged in the push tube, and one end of the central needle protrudes out of the push tube.

In one embodiment, the moving mold core is further embedded with a cooling assembly.

The utility model has the beneficial effects that:

a section of cold runner sub-runner with a cold material well is added between a hot runner and a product feeding line, so that cold material can be kept in the cold runner, the cold material is prevented from entering a product cavity, a set annular glue feeding port is convenient for glue to enter the cavity, the glue is prevented from remaining at the glue feeding port, meanwhile, a cooling water way can shorten a cooling period which is prolonged due to the addition of the cold runner sub-runner, the same production efficiency as that of a full hot runner is maintained, namely, the cold material is prevented from entering the cavity under the production advantages of full hot runner energy conservation and low waste, and the performance of a sealing ring is ensured.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

Wherein:

FIG. 1 shows a schematic structural diagram of one embodiment of the present utility model;

FIG. 2 shows an enlarged partial schematic view at A in FIG. 1;

in the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

a main sprue of a 1-hot runner, a 2-main runner, a 3-cold runner sub-runner, a 4-pouring gate, a 5-fixed insert and a 6-annular glue inlet, 7-movable mould cores, 8-push blocks, 9-push pipes, 10-central needles, 11-front moulds, 12-rear moulds and 13-water gap stripper plates.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The utility model provides a half hot runner injection mold of a sealing ring, as shown in fig. 1, comprising a mold main body and a glue feeding system, wherein the glue feeding system comprises a hot runner main sprue 1, one end of the hot runner main sprue 1 is provided with a feed inlet, a main runner 2 is also arranged in the hot runner main sprue 1, the main runner 2 is communicated with a glue feeding channel of the mold main body, a cold runner sub-runner 3 is also arranged between the main runner 2 and the glue feeding channel, and the tail end of the cold runner sub-runner 3 is connected with a cold material well;

specifically, the bottom of the cold runner sprue channel 3 is provided with a plurality of injection molding openings communicated with the cavity of the mold main body, and the injection molding openings are communicated with the cavity through a sprue 4;

it should be noted that a section of cold runner sub-runner 3 with a cold material well is added between the hot runner and the glue feeding line between the products, so that the cold material can be ensured to be reserved in the cold runner and prevented from entering the product cavity;

in one embodiment, as shown in fig. 1 and 2, the mold main body comprises a front mold 11 and a rear mold 12 which are sequentially overlapped up and down, a gate stripping plate 13 is further arranged above the front mold 11, a gate 4 is arranged in the gate stripping plate 13, a glue inlet on one side of the gate 4, which is close to a cavity, is an annular glue inlet 6, namely, two-plate molds of a full hot runner are changed into three-plate molds with a hot runner system, and meanwhile, the annular glue inlet 6 is arranged, namely, the structure of the annular small gate 4 is adopted, so that glue is convenient to enter the cavity and is prevented from remaining in the glue inlet;

specifically, as shown in fig. 2, the gate stripper plate 13 further has a fixing insert 5 for fixing the gate 4, keeping the gate 4 stable in position;

in one embodiment, as shown in fig. 1, the mold main body further comprises a movable mold core 7 and a push block 8 sleeved on the movable mold core 7, wherein the push block 8 is arranged in a front mold 11 of the mold main body, the arranged movable mold core 7 forms an injection cavity, and the push block 8 is used for opening the mold;

specifically, a push tube 9 is further arranged in the movable model core 7, the top of the push tube 9 is in contact with the annular glue inlet 6, a central needle 10 attached to the inner wall of the push tube 9 is further arranged in the push tube 9, and one end of the central needle 10 protrudes out of the push tube 9;

the three-plate mold structure consisting of the front mold 11, the rear mold 12 and the water gap stripper plate 13 can also automatically tear off the sizing material during mold opening;

in one embodiment, the cooling assembly is further embedded in the movable mold core 7, the cooling water path can shorten the cooling period which is prolonged by adding the cold runner sub-runner 3, the same production efficiency as that of the full hot runner is maintained, namely, the performance of the sealing ring is ensured by avoiding cold materials from entering the cavity under the production advantages of saving energy and reducing waste of the full hot runner.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (8)

1. The utility model provides a half hot runner injection mold of sealing washer, its characterized in that, includes mould main part and advances gluey system, advance gluey system and include that the hot runner is main to be chewed, the one end that the hot runner was chewed is provided with the feed inlet to the main purt, and the sprue has still been seted up to its inside, the sprue with the passageway intercommunication is glued to the advance of mould main part, the sprue with advance still be provided with cold runner branch runner between the gluey passageway, the end-to-end connection of cold runner branch runner has the cold charge well.

2. The semi-hot runner injection mold of claim 1 wherein said cold runner manifold bottom has a plurality of injection ports in communication with said mold cavity of said mold body, said injection ports in communication with said mold cavity through gates.

3. The semi-hot runner injection mold of claim 2, wherein the mold body comprises a front mold and a rear mold which are sequentially overlapped up and down, a gate stripper plate is further arranged above the front mold, and the gate is arranged in the gate stripper plate.

4. A semi-hot runner injection mold for a seal as claimed in claim 3 wherein said nozzle stripper plate further has a retaining insert for retaining said gate.

5. The semi-hot runner injection mold of claim 4, wherein the gate is an annular gate on a side of the cavity.

6. The semi-hot runner injection mold of claim 5, wherein the mold body further comprises a movable mold core and a push block sleeved on the movable mold core, the push block being disposed in a front mold of the mold body.

7. The semi-hot runner injection mold of claim 6, wherein a push tube is further arranged in the moving mold core, the top of the push tube is in contact with the annular glue inlet, a center needle attached to the inner wall of the push tube is further arranged in the push tube, and one end of the center needle protrudes out of the push tube.

8. The semi-hot runner injection mold of claim 6 wherein said moving mold core further comprises a cooling assembly embedded therein.