A dual-color ribbon earplug and its production process and forming die structure

Abstract

The present invention discloses a bicolor ribbon earplug and its production process and molding die structure, including: an earplug head part made of hard rubber material and an earplug sleeve made of soft rubber material nested on the earplug head part; the earplug head part includes: an earplug head body with an annular structure and a mesh cloth formed on the central ring hole of the earplug head body; the earplug head body and the mesh cloth are integrally injection molded. Compared with the traditional nylon mesh cloth that is secondarily formed with the earplug head body through a hot melt process, the integrally injection molded earplug head part has stronger structural integrity, effectively reduces the processing steps, thereby effectively reducing the processing energy consumption and labor force brought by processing production, effectively reducing the processing cost, and realizing fully automatic earplug processing production. Compared with the traditional processing process, it requires fewer shift manpower, the production capacity is increased by at least more than 3 times, and the yield is increased by at least about 30%.

Description

Technical Field

[0001] The present invention belongs to the technical field of earphone earplugs, and relates to a two-color netted earplug, its production process, and the structure of a forming mold. Background Art

[0002] Most of the traditional earplug structures on the market at present are composed of three structures: a soft rubber earplug sleeve, a plastic earplug head, and a nylon mesh. During the processing and production process, it is necessary to first perform injection molding on the plastic earplug head, then combine the plastic earplug head and the nylon mesh into one through a hot melt process, and then perform secondary injection molding to combine the plastic earplug head and the soft rubber earplug sleeve. This structure not only requires a large amount of manpower and has low efficiency in the production process, but also has a very low production yield due to the relatively large number of production steps. Summary of the Invention

[0003] In order to achieve the above object, the present invention adopts the following technical solutions:

[0004] A two-color netted earplug includes: an earplug head part made of hard rubber and an earplug sleeve made of soft rubber nested on the earplug head part; the earplug head part includes: an earplug head body with an annular structure and a mesh formed on the central annular hole of the earplug head body; the earplug head body and the mesh are integrally injection molded.

[0005] A forming mold structure for a two-color netted earplug includes: a matching upper mold base and a lower mold base; a cavity is respectively formed on the upper mold base and the lower mold base;

[0006] On both sides of the cavity of the upper mold base, an upper fixed mold for forming the earplug head part and an upper fixed mold for forming the earplug sleeve are respectively installed;

[0007] On both sides of the cavity of the lower mold base, a lower fixed mold for forming the earplug head part and a lower fixed mold for forming the earplug sleeve are respectively installed;

[0008] In the middle of the cavity of the lower mold base, a movable mold for forming the earplug head part is installed; forming surfaces for forming the earplug head part are arranged on both sides of the movable mold for forming the earplug head part; a rotating shaft part extending outward through the lower mold base is installed at the lower end of the movable mold for forming the earplug head part;

[0009] When the upper mold base and the lower mold base are clamped, the upper fixed mold for the earplug head part and the lower fixed mold for the earplug head part are buckled to form a fixed mold for the earplug head part with the forming surface facing the movable mold for forming the earplug head part; the upper fixed mold for the earplug sleeve and the lower fixed mold for the earplug sleeve are buckled to form a fixed mold for the earplug sleeve with the forming surface facing the movable mold for forming the earplug head part.

[0010] As a further solution of the present invention: The movable mold for forming the earplug head part includes: a movable mold base, on which there is a movable mold installation groove penetrating the movable mold base from the side. Inside the movable mold installation groove, two movable mold cores are installed. On the movable mold cores, there are earplug head part forming inserts, and the earplug head part forming inserts on the movable mold cores form the forming surface of the movable mold for forming the earplug head part.

[0011] As a further solution of the present invention: On both the upper fixed mold and the lower fixed mold of the earplug head part, there are several semi-enclosed earplug head part forming grooves. When the upper fixed mold and the lower fixed mold of the earplug head part are buckled together, the corresponding earplug head part forming grooves are buckled together to form an earplug head part forming cavity; each forming cavity cooperates to form the forming surface of the fixed mold of the earplug head part.

[0012] As a further solution of the present invention: On both the upper fixed mold and the lower fixed mold of the earplug sleeve, there are several semi-enclosed earplug sleeve forming grooves; when the upper fixed mold and the lower fixed mold of the earplug sleeve are buckled together, the corresponding earplug sleeve forming grooves are buckled together to form an earplug sleeve forming cavity; the earplug sleeve forming cavity is a two-stage structure, which are a pre-set section and a forming section respectively;

[0013] On the upper fixed mold and the lower fixed mold of the earplug sleeve, there are also fixed mold installation grooves. Inside the fixed mold installation grooves, there are forming slides, and on the forming slides, there are several earplug sleeve forming inserts; the earplug sleeve forming inserts and the earplug sleeve forming cavity cooperate to form the forming surface of the fixed mold of the earplug sleeve.

[0014] A production process for a two-color earplug with a net includes the following steps:

[0015] Step 1: Install the mold in a two-color injection molding device; the upper mold base and the lower mold base are closed, and the two-color injection molding device starts the injection molding work. The cooperation between the earplug head part forming insert on one side and the earplug head part forming groove will carry out the integral injection molding of the earplug head body and the net cloth, and the formed earplug head part remains on the earplug head part forming insert on this side;

[0016] Step 2: The upper mold base and the lower mold base are opened. Then, the two-color injection molding device jacks up the movable mold for forming the earplug head part through a rotating shaft part to leave the cavity of the lower mold base, and drives it to rotate 180°. Then, it is returned to the cavity of the lower mold base; the upper mold base and the lower mold base are closed, so that the earplug head part forming insert with the earplug head part enters the pre-set section of the earplug sleeve forming cavity; then the two-color injection molding device starts the injection molding work again, and through the cooperation of the earplug sleeve forming cavity and the earplug sleeve forming insert, the injection molding of the earplug sleeve is carried out, and the formed earplug sleeve is nested on the earplug head part; the processing and forming of the earplug are completed.

[0017] Advantages of the present invention: Compared with the traditional structure in which a nylon mesh is secondarily formed with an earplug body through a hot-melt process, the integrally injection-molded earplug part has stronger structural integrity, effectively reduces the processing steps, thus effectively reducing the processing energy consumption and labor force brought by processing production, effectively reducing the processing cost, and realizing fully automatic earplug processing production. Compared with the traditional processing technology, it requires fewer shift personnel, the production capacity is increased by at least more than 3 times, and the yield is increased by at least about 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the earplug structure in the present invention.

[0019] Figure 2 is a schematic diagram of the mold structure in the present invention.

[0020] Figure 3 is a schematic diagram of the structure of the upper mold base in the present invention.

[0021] Figure 4 is Figure 3 an enlarged schematic diagram of the structure at A in

[0022] Figure 5 is a schematic diagram of the structure of the lower mold base in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be understood that the present application is not limited by the exemplary embodiments disclosed herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention provides, please refer to Figure 1 , in the embodiments of the present invention, a two-color mesh earplug, comprising: an earplug head member 2 made of hard rubber and an earplug sleeve 1 made of soft rubber formed on the earplug head member 2 by secondary nesting with a two-color mold; the earplug head member 2 includes: an earplug head body 21 in an annular structure and a mesh 22 formed on the central circular hole of the earplug head body 21; the earplug head body 21 and the mesh 22 are integrally injection molded.

[0028] Please refer to Figures 2 - 5 , according to the above-described two-color mesh earplug, the present application also provides a molding die structure for a two-color mesh earplug for processing and manufacturing it, which includes: a matching upper die base 4 and a lower die base 3; a cavity 5 is respectively formed on the upper die base 4 and the lower die base 3;

[0029] On both sides of the cavity 5 of the upper die base 4, an upper fixed die 7 for forming the earplug head member 2 and an upper fixed die 10 for forming the earplug sleeve 1 are respectively installed;

[0030] On both sides of the cavity 5 of the lower die base 3, a lower fixed die 14 for forming the earplug head member 2 and a lower fixed die 20 for forming the earplug sleeve 1 are respectively installed;

[0031] In the middle of the cavity 5 of the lower die base 3, a movable die 23 for forming the earplug head member is installed; forming surfaces for forming the earplug head member 2 are provided on both sides of the movable die 23 for forming the earplug head member; a rotating shaft member 24 extending outward through the lower die base 3 is installed at the lower end of the movable die 23 for forming the earplug head member, for connecting with the rotating mechanism of the two-color mold injection device;

[0032] When the upper mold base 4 and the lower mold base 3 are closed, the fixed mold 7 on the earplug head part and the lower fixed mold 14 on the earplug head part are buckled together to form an earplug head part fixed mold with the forming surface facing the movable mold 23 for forming the earplug head part; the upper fixed mold 10 on the earplug sleeve and the lower fixed mold 20 on the earplug sleeve are buckled together to form an earplug sleeve fixed mold with the forming surface facing the movable mold 23 for forming the earplug head part.

[0033] Specifically, the movable mold 23 for forming the earplug head part includes: a movable mold base, a movable mold installation groove 9 penetrating the movable mold base from the side is formed on the movable mold base, two movable mold cores 16 are installed inside the movable mold installation groove 9, an earplug head part forming insert 15 is installed on the movable mold core 16, and the earplug head part forming inserts 15 on the movable mold cores 16 form the forming surface of the movable mold 23 for forming the earplug head part.

[0034] Specifically, a number of semi-circular earplug head part forming grooves 6 are formed on both the upper fixed mold 7 and the lower fixed mold 14 of the earplug head part. When the upper fixed mold 7 and the lower fixed mold 14 of the earplug head part are buckled, the corresponding earplug head part forming grooves 6 are buckled together to form an earplug head part forming cavity (not shown in the figure). When the upper mold base 4 and the lower mold base 3 are closed, the earplug head part forming insert 15 is placed in the earplug head part forming cavity; each forming cavity 5 cooperates to form the forming surface of the earplug head part fixed mold.

[0035] Specifically, a number of semi-circular earplug sleeve forming grooves 11 are formed on both the upper fixed mold 10 and the lower fixed mold 20 of the earplug sleeve; when the upper fixed mold 10 and the lower fixed mold 20 of the earplug sleeve are buckled, the corresponding earplug sleeve forming grooves 11 are buckled together to form an earplug sleeve forming cavity (not shown in the figure); the earplug sleeve forming cavity is a two-stage structure, and the section close to the movable mold 23 for forming the earplug head part is a pre-set section 13 for placing the earplug head part forming insert 15 and a forming section 12 for forming the earplug sleeve 1;

[0036] Fixed mold installation grooves (not shown in the figure) are also formed on the upper fixed mold 10 and the lower fixed mold 20 of the earplug sleeve. A forming slide 19 is installed in the installation groove, and a number of earplug sleeve forming inserts 17 are installed on the forming slide 19. When the upper mold base 4 and the lower mold base 3 are closed, the earplug sleeve forming inserts 17 are placed in the forming section 12; the earplug sleeve forming inserts 17 and the earplug sleeve forming cavity cooperate to form the forming surface of the earplug sleeve fixed mold.

[0037] According to the above-described forming mold structure of a two-color earplug with a mesh, the present application also provides a production process for a two-color earplug with a mesh used for processing and producing a two-color earplug with a mesh, which includes the following steps:

[0038] Step 1: Install the mold in the two-color injection molding equipment; the upper mold base 4 and the lower mold base 3 are closed, and the two-color injection molding equipment starts the injection molding work. The cooperation between the earplug head forming insert 15 on one side and the earplug head forming groove 6 will carry out the integral injection molding of the earplug head body 21 and the mesh 22. The formed earplug head part 2 remains on the earplug head forming insert 15 on this side;

[0039] Step 2: The upper mold base 4 and the lower mold base 3 are opened. Then, the two-color injection molding equipment jacks up the earplug head forming moving mold 23 through the rotating shaft part 24 to leave the cavity 5 of the lower mold base 3, and drives it to rotate 180°. Then, it is returned to the cavity 5 of the lower mold base 3; the upper mold base 4 and the lower mold base 3 are closed, so that the earplug head forming insert 15 with the earplug head part 2 enters the preset section 13 of the earplug sleeve forming cavity; then the two-color injection molding equipment starts the injection molding work again, and the earplug sleeve is injection molded through the cooperation of the earplug sleeve forming cavity and the earplug sleeve forming insert 17. The formed earplug sleeve is nested on the earplug head part 2; then the upper mold base 4 and the lower mold base 3 are opened, and the earplug is demolded, thus completing the processing and forming of the earplug.

[0040] It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A molding die structure for a bicolor ribbon earplug, characterized in that, Comprising: A matching upper die base and a lower die base; a cavity is formed on each of the upper die base and the lower die base; On both sides of the cavity of the upper die base, an upper fixed die for earplug head part forming and an upper fixed die for earplug sleeve forming are respectively installed; On both sides of the cavity of the lower die base, a lower fixed die for earplug head part forming and a lower fixed die for earplug sleeve forming are respectively installed; In the middle of the cavity of the lower die base, a movable die for earplug head part forming is installed; forming surfaces for earplug head part forming are arranged on both sides of the movable die for earplug head part forming; a rotating shaft part extending outward through the lower die base is installed at the lower end of the movable die for earplug head part forming; When the upper die base and the lower die base are closed, the upper fixed die for earplug head part and the lower fixed die for earplug head part are buckled to form an earplug head part fixed die with the forming surface facing the movable die for earplug head part forming; the upper fixed die for earplug sleeve and the lower fixed die for earplug sleeve are buckled to form an earplug sleeve fixed die with the forming surface facing the movable die for earplug head part forming; The movable die for earplug head part forming includes: a movable die base, a movable die installation groove penetrating the movable die base from the side is formed on the movable die base, two movable die cores are installed inside the movable die installation groove, earplug head part forming inserts are installed on the movable die cores, and the earplug head part forming inserts on the movable die cores form the forming surface of the movable die for earplug head part forming; A number of semi-circular earplug head part forming grooves are formed on both the upper fixed die for earplug head part and the lower fixed die for earplug head part. When the upper fixed die for earplug head part and the lower fixed die for earplug head part are buckled, the corresponding earplug head part forming grooves are buckled to form an earplug head part forming cavity; each forming cavity cooperates to form the forming surface of the earplug head part fixed die; A number of semi-circular earplug sleeve forming grooves are formed on both the upper fixed die for earplug sleeve and the lower fixed die for earplug sleeve; when the upper fixed die for earplug sleeve and the lower fixed die for earplug sleeve are buckled, the corresponding earplug sleeve forming grooves are buckled to form an earplug sleeve forming cavity; the earplug sleeve forming cavity is of a two-stage structure, namely a pre-set section and a forming section; Fixed die installation grooves are also formed on both the upper fixed die for earplug sleeve and the lower fixed die for earplug sleeve, forming slides are installed in the fixed die installation grooves, and a number of earplug sleeve forming inserts are installed on the forming slides; the earplug sleeve forming inserts and the earplug sleeve forming cavity cooperate to form the forming surface of the earplug sleeve fixed die.

2. A production process for earplugs with a two - color ribbon net, according to the molding die structure of the earplugs with a two - color ribbon net described in claim 1, which is applied to the preparation and processing of earplugs with a two - color ribbon net, characterized in that, Including the following steps: Step 1: Install the mold in a two-color injection molding device; close the upper die base and the lower die base, and the two-color injection molding device starts the injection molding work. The cooperation between the earplug head part forming inserts on one side and the earplug head part forming grooves will carry out the integral injection molding of the earplug head body and the mesh cloth, and the formed earplug head part remains on the earplug head part forming inserts on this side; Step 2: Open the upper die base and the lower die base, and then the two-color injection molding device jacks up the movable die for earplug head part forming to leave the cavity of the lower die base through the rotating shaft part and drives it to rotate 180°, and then returns it to the cavity of the lower die base; close the upper die base and the lower die base to make the earplug head part forming inserts with earplug head parts enter the pre-set section of the earplug sleeve forming cavity; then the two-color injection molding device starts the injection molding work again, and through the cooperation of the earplug sleeve forming cavity and the earplug sleeve forming inserts, the injection molding of the earplug sleeve is carried out, and the formed earplug sleeve is nested on the earplug head part; the processing and forming of the earplug are completed.

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