CN219213965U

CN219213965U - Exhaust structure and mould with same

Info

Publication number: CN219213965U
Application number: CN202320437774.5U
Authority: CN
Inventors: 胡晓峰; 李小亮; 欧阳玉林; 钟杨能
Original assignee: Shenzhen Eva Mould Manufacturing Ltd
Current assignee: Shenzhen Eva Mould Manufacturing Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-20
Anticipated expiration: 2033-02-28

Abstract

The utility model relates to an exhaust structure and a die with the same, comprising an insert, wherein a plurality of exhaust sheets are arranged on the insert in parallel; this exhaust structure and have exhaust structure's mould structural design ingenious, through set up a plurality of exhaust pieces in the mold insert, one side surface of exhaust piece is equipped with the exhaust and leads to the groove, and when the product of moulding plastics, make the mold insert glue the gas on the face in time along the exhaust and lead to the groove outwards discharge, the length that a plurality of exhaust pieces formed can be according to the weld mark length adjustment of the product of moulding plastics to gas on the face of gluing can be derived from the mold insert smoothly, improves the weld mark, thereby reinforcing the intensity of the product of moulding plastics.

Description

Exhaust structure and mould with same

Technical Field

The utility model relates to the technical field of injection molds, in particular to an exhaust structure and a mold with the same.

Background

In injection molding, a corresponding mold cavity is formed according to molding conditions or the shape of a resin molded article, and then a molten material is injected into the cavity to mold, but various molding depressions may be generated in this case. The weld mark is one of the two, namely a three-dimensional area with completely different morphological structure and mechanical property formed when two molten materials are contacted; when two or more gates are adopted in common weld marks in injection molding parts, the meeting position of melt fronts entering the cavity from different gates is formed because internal gas cannot be discharged in time, the bonding degree of the weld marks is low, the molding strength is weak, if the weld marks are subjected to larger external force, cracks can be generated, and therefore the product is damaged.

Disclosure of Invention

The present utility model has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide an exhaust structure capable of improving weld marks and a mold having the exhaust structure.

The technical scheme adopted for solving the technical problems is as follows: an exhaust structure comprising an insert; the upper surface of the insert is a rubber surface of an injection molding product; the welding mark is formed on the glue position surface; the bottom of the insert is also provided with a cavity which is concave inwards; the rubber position surface is provided with a first mounting groove which is communicated with the cavity; a plurality of exhaust sheets arranged side by side are fixedly arranged in the first mounting groove; an exhaust through groove which is communicated with the first mounting groove is formed in one side surface of the exhaust piece and is used for guiding the gas on the rubber position surface to be discharged outwards from the bottom of the insert; the exhaust through groove comprises a first groove and a second groove which are sequentially arranged from top to bottom; the first groove is communicated with the second groove; the width of the first groove is smaller than that of the second groove, and the depth of the first groove is smaller than that of the second groove;

the exhaust structure comprises a first mounting groove, a second mounting groove and a connecting piece, wherein the first mounting groove extends along the length direction of a welding mark, and the length of the first mounting groove is larger than that of the welding mark;

the exhaust structure comprises an exhaust sheet, wherein one end or two ends of the exhaust sheet are respectively provided with a connecting part extending outwards; a limiting strip for preventing the plurality of exhaust sheets from being separated from the first mounting groove is arranged in the insert; when assembled in place; the limit strip is in clamping connection with the connecting part;

the exhaust structure comprises a first groove, a second groove and a third groove, wherein the depth of the first groove is 0.03-0.04 mm; the depth of the second groove is 0.5+/-0.02 mm;

the utility model also discloses a die with the exhaust structure, which comprises a die core body, wherein the upper surface of the die core body is an injection molding surface of an injection molding product; the injection molding surface is provided with a second mounting groove at the welding mark; the exhaust structure is fixedly arranged in the second mounting groove; at least one glue inlet position is symmetrically arranged on two sides of the exhaust structure on the injection molding surface;

the die disclosed by the utility model is characterized in that the second mounting groove is formed along the length direction of the weld mark;

the die disclosed by the utility model is characterized in that a positioning block protruding upwards is arranged in the second mounting groove; when the exhaust structure and the die core body are assembled in place, the positioning block is inserted into a die cavity of the exhaust structure;

the mold disclosed by the utility model is characterized in that one or more ventilation flow passages which are in through connection with the second mounting groove are arranged on the mold core body and are used for guiding the gas of the second mounting groove to flow out of the mold core body;

the mold of the utility model, wherein the side of the insert facing the inner side wall of the second mounting groove is also provided with the exhaust through groove for exhausting the air around the insert.

The utility model has the beneficial effects that: this exhaust structure and have exhaust structure's mould structural design ingenious, through set up a plurality of exhaust pieces in the mold insert, one side surface of exhaust piece is equipped with the exhaust and leads to the groove, and when the product of moulding plastics, make the mold insert glue the gas on the face in time along the exhaust and lead to the groove outwards discharge, the length that a plurality of exhaust pieces formed can be according to the weld mark length adjustment of the product of moulding plastics to gas on the face of gluing can be derived from the mold insert smoothly, improves the weld mark, thereby reinforcing the intensity of the product of moulding plastics.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained by those skilled in the art without inventive effort:

FIG. 1 is a schematic view of an exhaust structure according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of an exhaust sheet according to the preferred embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an exhaust structure according to a preferred embodiment of the present utility model;

FIG. 4 is a schematic view of a mold with a venting structure according to another preferred embodiment of the present utility model;

FIG. 5 is a schematic diagram showing a mold with a venting structure according to another preferred embodiment of the present utility model;

fig. 6 is a cross-sectional view of A-A in fig. 5.

Detailed Description

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

"plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Moreover, the terms "upper, lower, front, rear, left, right, upper end, lower end, longitudinal" and the like that represent orientations are referred to with reference to the attitude position of the apparatus or device described in this scheme when in normal use.

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Example 1:

an exhaust structure 100 according to a preferred embodiment of the present utility model, as shown in fig. 1-3, includes an insert 101; the upper surface of the insert 101 is a rubber surface 109 of the injection product; a weld mark (not shown) is formed on the glue site surface 109; the bottom of the insert 101 is also formed with an inwardly recessed cavity 102; the glue position surface 109 is provided with a first mounting groove 103 communicated with the cavity 102; a plurality of exhaust sheets 104 arranged side by side are fixedly arranged in the first mounting groove 103; an exhaust through groove which is communicated with the first mounting groove 103 is arranged on one side surface of the exhaust piece 104 and is used for guiding the gas on the rubber surface 109 to be discharged outwards from the bottom of the insert 101; the exhaust through groove comprises a first groove 105 and a second groove 106 which are sequentially arranged from top to bottom; the first groove 105 is communicated with the second groove 106; the width of the first groove 105 is smaller than the width of the second groove 106, and the depth of the first groove 105 is smaller than the depth of the second groove 106; preferably, the depth of the first groove 105 is 0.03 to 0.04mm; the depth of the second groove 106 is 0.5±0.02mm; further, the thickness of the exhaust sheet is 5mm, and under the size, glue leakage is avoided in the injection molding process, and the exhaust effect can be achieved.

This exhaust structural design is ingenious, through set up a plurality of exhaust pieces in the mold insert, and one side surface of exhaust piece is equipped with the exhaust and leads to the groove, and when the product of moulding plastics, make the gas on the mold insert glue position face in time along the exhaust lead to the outside exhaust of groove, the length that a plurality of exhaust pieces formed can be adjusted according to the weld mark length of the product of moulding plastics to gas on the glue position face can be derived from the mold insert smoothly, improves the weld mark, thereby strengthen the intensity of the product of moulding plastics.

Preferably, the first mounting groove 103 extends along a length direction of a weld mark (not shown), and the length of the first mounting groove 103 is greater than that of the weld mark, so that the weld mark is improved in time.

Preferably, one or both ends of the exhaust sheet 104 are provided with a connecting portion 107 extending outwards; a limiting bar 108 for preventing the plurality of exhaust sheets 104 from being separated from the first mounting groove 103 is arranged in the insert 101; when assembled in place; the limit bar 108 is connected with the connecting part 107 in a clamping way, so that the structure is stable, and the connection between the exhaust piece and the insert can be enhanced.

Example 2:

the utility model also provides a mold with an exhaust structure, as shown in fig. 4-6, comprising a mold core body 200, wherein the upper surface of the mold core body 200 is an injection molding surface 201 of an injection molding product; the injection molding surface 201 is provided with a second mounting groove 202 at a welding mark (not shown in the figure); the second mounting groove 202 is fixedly provided with an exhaust structure as described in embodiment 1, and at least one glue inlet position (not shown) is symmetrically arranged on two sides of the injection molding surface 201 located on the exhaust structure 100; after the plastic injection molding machine is installed in place, the plastic position surface and the injection molding surface are positioned on the same horizontal plane.

In the injection molding process, glue is injected into the injection molding surface from two glue injection positions on the injection molding surface through two glue injection devices respectively, multiple glue strands are converged and injected, after the mold is closed, gas is timely discharged through an exhaust structure on the mold core body, so that the degree of fusion between the glue on two sides of a weld mark can be enhanced, the problems of weld mark, sink mark and the like on an injection molding product can be improved to a great extent, and the structural strength of the injection molding product is improved.

Preferably, the second mounting groove 202 is disposed along the length of a weld (not shown).

Preferably, the second mounting groove 202 is provided with an upward protruding positioning block 203; when assembled in place, the positioning block 203 is inserted into the cavity 102 of the vent structure 100, and can prevent the vent piece and insert from moving in the second mounting groove.

In the injection molding process, in order to enable the gas in the mold to be discharged more quickly, one or more ventilation channels 204 are arranged on the mold core body 200 and are in through connection with the second mounting groove 202, so as to guide the gas in the second mounting groove 202 to flow out of the mold core body 200. The side of the insert 101 facing the inner side wall of the second mounting groove 202 is also provided with an exhaust air through groove for exhausting air around the insert 101, and the exhaust air through groove adopts the same structure as the exhaust air through groove on the exhaust sheet in embodiment 1, so that more sufficient and timely exhaust can be achieved.

It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.

Claims

1. An exhaust structure, comprising an insert; the upper surface of the insert is a rubber surface of an injection molding product; the welding mark is formed on the glue position surface; the bottom of the insert is also provided with a cavity which is concave inwards; the rubber position surface is provided with a first mounting groove which is communicated with the cavity; a plurality of exhaust sheets arranged side by side are fixedly arranged in the first mounting groove; an exhaust through groove which is communicated with the first mounting groove is formed in one side surface of the exhaust piece and is used for guiding the gas on the rubber position surface to be discharged outwards from the bottom of the insert; the exhaust through groove comprises a first groove and a second groove which are sequentially arranged from top to bottom; the first groove is communicated with the second groove; the width of the first groove is smaller than that of the second groove, and the depth of the first groove is smaller than that of the second groove.

2. The exhaust structure according to claim 1, wherein the first mounting groove extends in a length direction of the weld mark, and a length of the first mounting groove is greater than a length of the weld mark.

3. The exhaust structure according to claim 2, wherein one or both ends of the exhaust sheet are provided with a connecting portion extending outward; a limiting strip for preventing the plurality of exhaust sheets from being separated from the first mounting groove is arranged in the insert; when assembled in place; the limit strip is connected with the connecting part in a clamping way.

4. The exhaust structure according to claim 1, wherein the depth of the first groove is 0.03 to 0.04mm; the depth of the second groove is 0.5+/-0.02 mm.

5. The die with the exhaust structure comprises a die core body, and is characterized in that the upper surface of the die core body is an injection molding surface of an injection molding product; the injection molding surface is provided with a second mounting groove at the welding mark; the exhaust structure as claimed in any one of claims 1 to 4 is fixedly installed in the second installation groove; the injection molding surface is positioned on two sides of the exhaust structure and is symmetrically provided with at least one glue inlet position.

6. The mold with a vent structure according to claim 5, wherein the second mounting groove is provided along a length direction of the weld mark.

7. The mold with the exhaust structure according to claim 6, wherein the second mounting groove is provided with a positioning block protruding upwards; when the exhaust structure and the die core body are assembled in place, the positioning block is inserted into the die cavity of the exhaust structure.

8. The mold with the exhaust structure according to claim 5, wherein the mold core body is provided with one or more ventilation channels connected with the second installation groove in a penetrating manner, and the ventilation channels are used for guiding the gas of the second installation groove to flow out of the mold core body.

9. The mold with a vent structure according to claim 8, wherein a side of the insert facing the second mounting groove inner side wall is also provided with the vent through groove that vents air around the insert.