Ear hanging liquid silicone mold structure

Abstract

This utility model relates to the technical field of ear hook liquid silicone mold structure, which pertains to headphone accessory processing devices. It includes a lower mold and a movable insert detachably connected to the lower mold. The movable insert has multiple pre-embedded components, and the lower mold has molding grooves. Multiple ear hook plastic materials are pre-assembled onto the pre-embedded components of the movable insert. Then, the movable insert, into which the ear hook plastic materials are embedded, is embedded into the lower mold. Finally, the upper and lower molds are closed, and liquid silicone molding is performed within the mold. Using the movable insert method, multiple ear hook plastic materials can be pre-assembled simultaneously on the movable insert. Once the movable insert is fully embedded in the lower mold, multiple ear hook plastic materials can be simultaneously liquid silicone molded in a single mold closing operation. This reduces the cumulative time for embedding and molding individual materials, significantly shortening the entire molding cycle, improving production efficiency, reducing the possibility of inaccurate material embedding due to operational errors, and ensuring smooth production.

Description

Technical Field

[0001] This utility model relates to the technical field of headphone accessory processing devices, specifically to the structure of liquid silicone molds for ear hooks. Background Technology

[0002] With the continuous development of technology, the design and manufacturing technology of headphones is also constantly improving. Ear-hook headphones are loved by consumers for their advantages such as comfortable wearing and good stability. In order to improve the comfort and fit of ear hooks, liquid silicone material has been widely used in ear hook manufacturing. Liquid silicone has the characteristics of being soft, elastic and skin-friendly, which can effectively reduce discomfort when wearing.

[0003] In the process of liquid silicone molding of ear hooks, the design and structure of the mold play a crucial role. Existing ear hook molding molds usually use the method of embedding a single ear hook plastic material into the mold for liquid silicone molding. This traditional mold structure and molding method has many drawbacks.

[0004] From the perspective of the molding cycle, since only one ear loop plastic material can be embedded into the mold at a time, after completing one liquid silicone molding, the next material needs to be embedded again. This makes the entire molding process too long. In the case of large-scale production, the excessively long molding cycle seriously affects production efficiency, increases production costs, and reduces the company's market competitiveness.

[0005] From the perspective of operational error risk, employees need to perform precise operations when embedding individual ear loop plastic materials into the mold. However, due to long hours of repetitive work, employees are prone to fatigue and lack of concentration, which can lead to errors when embedding the materials. If the material is not embedded in the correct position or other errors occur, there is a high risk of mold crushing when the mold is closed for liquid silicone molding. Mold crushing not only damages the mold and increases mold maintenance costs, but also affects the continuity of production and further reduces production efficiency.

[0006] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0007] Regarding the existing ear hook molding molds mentioned above, employees typically need to embed individual ear hook plastic materials into the mold. This results in an excessively long cycle for the liquid silicone molding of each embedded ear hook plastic material within the mold. Furthermore, employees are prone to making mistakes when embedding individual ear hook plastic materials into the mold, leading to technical problems such as mold pressing risks.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] The ear hook liquid silicone mold structure includes a lower mold and a movable insert detachably connected to the lower mold. The movable insert is provided with multiple pre-embedded components that can be pre-assembled with corresponding ear hook plastic materials. The lower mold is provided with molding grooves corresponding to the pre-embedded components.

[0010] As described above, in the liquid silicone mold structure for ear loops, multiple pre-embedded components are arranged in a circumferential array around the center of the movable insert.

[0011] As described above, in the liquid silicone mold structure for ear hooks, each of the pre-embedded components includes a first connecting block and a second connecting block that are respectively connected to both ends of the ear hook plastic material.

[0012] As described above, in the liquid silicone mold structure for ear hooks, each of the pre-embedded components further includes a plug-in block, each of the plug-in blocks being able to be inserted into the plug-in hole of the corresponding ear hook plastic material, the plug-in hole being located on one side of the end of the ear hook plastic material connected to the first connecting block.

[0013] As described above, the ear hook liquid silicone mold structure includes two spaced positioning protrusions on the lower mold, forming a first positioning groove between them. The movable insert is installed in the first positioning groove, and the molding groove is provided on the positioning protrusions, with each protrusion corresponding to the other. The side wall of each positioning protrusion is also provided with a second positioning groove corresponding to the second connecting block, and the top of each positioning protrusion is provided with a third positioning groove corresponding to the first connecting block.

[0014] As described above, in the liquid silicone ear hook mold structure, the first connecting block includes a positioning block and a snap-fit ​​block connected thereto. The positioning block can be connected to the third positioning groove, and the snap-fit ​​block can be connected to one end of the ear hook plastic material. When the movable insert is installed in the first positioning groove, the snap-fit ​​block with the ear hook plastic material is located in the corresponding molding groove.

[0015] As described above, in the liquid silicone mold structure for ear hooks, a first positioning component is further provided between the first positioning groove and the movable insert. The first positioning component includes a first positioning hole and a first positioning post.

[0016] As described above, in the liquid silicone ear hook mold structure, the movable insert includes an assembly section and positioning sections at both ends of the assembly section. The assembly section is correspondingly arranged with the first positioning groove. A second positioning component is provided between the lower mold and the positioning section. The second positioning component includes a second positioning hole and a second positioning post.

[0017] As described above, the liquid silicone ear hook mold structure has four pre-embedded components. Two pre-embedded components are provided on each side of the movable insert. Two injection channels are provided on the lower mold. The two ends of each injection channel are connected to the molding grooves located on both sides of it.

[0018] As described above, the ear hook liquid silicone mold structure also includes a lifting handle on the top of the movable insert.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model relates to the technical field of ear hook liquid silicone mold structure, which pertains to headphone accessory processing devices. It includes a lower mold and a movable insert detachably connected to the lower mold. The movable insert has multiple pre-embedded components, and the lower mold has molding grooves. Multiple ear hook plastic materials are pre-assembled onto the pre-embedded components of the movable insert. Then, the movable insert, into which the ear hook plastic materials are embedded, is embedded into the lower mold. Finally, the upper and lower molds are closed, and liquid silicone molding is performed within the mold. Using the movable insert method, multiple ear hook plastic materials can be pre-assembled simultaneously on the movable insert. Once the movable insert is fully embedded in the lower mold, multiple ear hook plastic materials can be simultaneously liquid silicone molded in a single mold closing operation. This reduces the cumulative time for embedding and molding individual materials, significantly shortening the entire molding cycle, improving production efficiency, reducing the possibility of inaccurate material embedding due to operational errors, and ensuring smooth production.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 A schematic diagram of the ear hook liquid silicone mold structure of this utility model, which is equipped with ear hook plastic material;

[0023] Figure 2 An exploded view of the ear hook liquid silicone mold structure of this utility model, which is equipped with ear hook plastic material;

[0024] Figure 3 An exploded view of the movable insert of this utility model equipped with ear-hook plastic material;

[0025] Figure 4 This is a schematic diagram of the structure of the movable insert of this utility model, which is equipped with ear-hook plastic material. Detailed Implementation

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1 to 4As shown, the liquid silicone ear hook mold structure of this embodiment includes a lower mold 1 and a movable insert 2 detachably connected to the lower mold 1. The movable insert 2 is provided with a plurality of pre-embedded components 4 that can be pre-assembled with corresponding ear hook plastic materials 3. The lower mold 1 is provided with molding grooves 11 corresponding to the pre-embedded components 4. By pre-assembling a plurality of ear hook plastic materials 3 onto the pre-embedded components 4 of the movable insert 2, then embedding the movable insert 4 into the lower mold 1, and then closing the upper mold (not shown in the figure) with the lower mold 1, liquid silicone molding is performed in the mold.

[0028] Specifically, by setting multiple pre-embedded components on the movable insert, these pre-embedded components can be used to pre-assemble the corresponding ear loop plastic materials. Operators can assemble multiple ear loop plastic materials onto each pre-embedded component of the movable insert in sequence at a suitable work station outside the mold. This process can be carried out relatively easily and is not limited by the time constraints of operations such as mold closing.

[0029] After all the pre-embedded components on the movable insert are assembled with ear loop plastic materials, the movable insert, which already has multiple ear loop plastic materials embedded in it, is completely embedded into the lower mold. At this time, the pre-embedded components on the movable insert correspond to the molding grooves on the lower mold, and the ear loop plastic materials are accurately positioned in the appropriate positions of the molding grooves.

[0030] The upper and lower molds are closed to form a complete mold cavity. Liquid silicone is then injected into the mold cavity (usually, an injection hole is set in the upper mold, and an injection channel 14 connected to the injection hole and the molding groove 11 is set in the lower mold 1 to allow the liquid silicone to pass through). The liquid silicone completes the molding process in the mold under certain process conditions (such as heating and curing) and combines with the ear loop plastic material to form the final ear loop product.

[0031] After molding is complete, open the mold, take out the molded ear loop product, and then remove the movable insert from the lower mold. Then, pre-assemble the new ear loop plastic material on the movable insert and repeat the above steps for the next round of production.

[0032] By using movable inserts, multiple ear loop plastic materials can be pre-assembled on the movable inserts simultaneously. This process can be carried out in parallel with other mold preparation work. After the movable inserts are embedded into the lower mold, multiple ear loop plastic materials can be simultaneously molded with liquid silicone in one mold closing, which greatly reduces the cumulative time for embedding and molding a single material, thereby significantly shortening the entire molding cycle and improving production efficiency.

[0033] When employees embed individual ear loop plastic materials into the mold, the limited internal space and narrow operating space of the mold, coupled with the requirement to complete the operation within a specified mold opening and closing time, make it easy for errors to occur. However, when the ear loop plastic materials are pre-assembled on the movable insert, the operating space is more open, allowing employees to perform the assembly operation more calmly and accurately. This reduces the possibility of inaccurate material embedding due to operational errors, thus avoiding the risk of mold compression caused by material embedding errors and ensuring smooth production.

[0034] More products can be produced per unit time, directly improving production efficiency. At the same time, by reducing operational errors and the probability of problems such as mold pressing, the molding quality of products is more stable, reducing the production of defective products and thus improving the product yield.

[0035] It avoids risks such as mold pressing and reduces the possibility of mold damage due to abnormal stress. When the mold operates under normal and stable working conditions, its wear and damage will be greatly reduced, thereby extending the service life of the mold and reducing the replacement and maintenance costs of the mold.

[0036] like Figures 1 to 4 As shown, in this embodiment, the multiple pre-embedded components 4 are arranged in a circular array around the center of the movable insert 2.

[0037] Preferably, when the ear loop liquid silicone molding mold is working, the movable insert is a key component in the mold, and its center can be regarded as the reference point for the entire operation. Multiple pre-embedded components are arranged in a circumferential array around the center of the movable insert. Before performing liquid silicone molding, the operator or automated equipment can place the ear loop plastic material into each pre-embedded component in sequence around the center of the movable insert according to the distribution pattern of the circumferential array.

[0038] During the liquid silicone injection molding process after mold closing, the distribution of the circumferential array makes the relative positions of each embedded component fixed and uniform. The liquid silicone can flow to the ear loop plastic material in each embedded component in a relatively even manner, ensuring that each ear loop plastic material can be evenly coated with liquid silicone to complete the molding process.

[0039] With multiple pre-embedded components working simultaneously, it is equivalent to performing liquid silicone molding operations on multiple ear loop plastic materials in one molding cycle, which greatly shortens the overall molding time compared to the traditional method of embedding materials one by one.

[0040] Since the pre-embedded components are arranged in a circular array around the center of the movable insert, the environment and conditions of each pre-embedded component are basically the same during the liquid silicone injection process. The flow path and pressure distribution of the liquid silicone are relatively uniform, which makes the liquid silicone coating of each ear hook plastic material similar during the molding process, thus ensuring that the molded ear hook products have high consistency in terms of size, shape and performance.

[0041] The circular array layout makes the distribution of embedded components more regular. During the daily maintenance and inspection of the mold, the staff can more easily observe and maintain each embedded component. If a problem occurs with a certain embedded component, its position is regular, so it can be quickly located and repaired or replaced, reducing the time and cost of mold maintenance.

[0042] like Figures 1 to 4 As shown, each of the pre-embedded components 4 in this embodiment includes a first connecting block 41 and a second connecting block 42 that are respectively connected to both ends of the ear loop plastic material 3.

[0043] Preferably, during the molding process of liquid silicone ear loops, when the mold is closed and liquid silicone begins to be injected, the first connecting block and the second connecting block are respectively connected to both ends of the ear loop plastic material. From the perspective of sealing, the first connecting block and the second connecting block are tightly fitted to both ends of the ear loop plastic material, forming a relatively closed space. When the liquid silicone flows in the mold cavity, it cannot flow into the interior of the ear loop plastic material due to the obstruction of the first connecting block and the second connecting block, and can only be coated and molded on the outside of the ear loop plastic material.

[0044] From the perspective of positioning and assembly, the connection method between the first connecting block and the second connecting block and the two ends of the ear loop plastic material is pre-designed. They have precise matching dimensions and structure. When the ear loop plastic material is placed into the pre-embedded component, the first connecting block and the second connecting block can accurately guide the ear loop plastic material to the predetermined position, ensuring that the ear loop plastic material is in the correct posture and position in the mold, so that the liquid silicone can evenly cover its exterior and achieve precise molding.

[0045] This design prevents liquid silicone from flowing into the ear hook plastic material, avoiding problems such as damage to the internal structure and deterioration of performance caused by the silicone entering the interior. For example, if liquid silicone flows into the ear hook plastic material, it may affect the acoustic performance and wearing comfort of the ear hook. This design ensures that the various performance characteristics of the ear hook product meet the requirements.

[0046] Since liquid silicone can only be molded on the outside of the ear hook plastic material, it can ensure that the ear hook product has a clean and smooth appearance, and will not have defects such as uneven surface or air bubbles caused by the presence of internal silicone material, thus improving the overall aesthetics of the product.

[0047] By sealing and positioning the assembly, the product defect rate is reduced due to liquid silicone flowing into the interior or inaccurate positioning of the ear loop plastic material. This reduces the production of defective products, meaning that there is no need to rework or scrap a large number of defective products, saving production time and costs and improving production efficiency.

[0048] When the ear loop plastic material is accurately positioned in the pre-embedded component, the impact force and pressure on the mold are more evenly distributed during the mold closing and liquid silicone injection process, reducing the risk of excessive local stress and damage to the mold caused by inaccurate material positioning.

[0049] like Figures 1 to 4 As shown, each of the pre-embedded components 4 in this embodiment also includes a plug-in block 43, each plug-in block 43 being able to be inserted into the plug-in hole 31 of the corresponding ear loop plastic material 3, the plug-in hole 31 being located on one side of the end of the ear loop plastic material 3 connected to the first connecting block 41.

[0050] In the liquid silicone molding process, when producing earphone ear hooks, the pre-embedded component's insertion block is precisely inserted into the insertion hole of the ear hook plastic material. From a sealing perspective, the insertion block and the insertion hole fit tightly together to form a sealed structure. When the liquid silicone is injected into the mold cavity and begins to flow, this sealed structure can effectively prevent the liquid silicone from flowing into the ear hook plastic material from the side with the insertion hole. It acts like a plug, blocking the channels that might allow the liquid silicone to enter, ensuring that the liquid silicone can only be coated and molded on the outside of the ear hook plastic material according to a predetermined path and range.

[0051] From the perspective of fixing and positioning, after the plug-in block is inserted into the plug-in hole, it further enhances the connection stability between the ear hook plastic material and the pre-embedded component. It restricts the movement and shaking of the ear hook plastic material in the mold cavity, so that the ear hook plastic material can maintain an accurate position and posture throughout the molding process. In this way, during the liquid silicone injection and molding process, the ear hook plastic material will not be displaced due to external forces, ensuring that the liquid silicone can evenly cover its exterior and achieve normal molding of the earphone ear hook.

[0052] By improving the sealing performance, liquid silicone is prevented from flowing into the ear hook plastic material, thus ensuring the cleanliness and integrity of the internal structure of the ear hook.

[0053] The positioning function of the plug-in block makes the position of the ear hook plastic material more precise within the mold, and the liquid silicone can evenly coat the surface of the material, making the shape and size of the ear hook more in line with the design requirements.

[0054] For ear hook plastic materials with holes on the side, using only the first connecting block 41 may not meet the sealing requirements. The design of adding a plug block to insert into the plug hole is specifically designed for this special ear hook material, which solves the problem of liquid silicone flowing in that may be caused by the side holes. This allows ear hooks with this special structure to be successfully molded, expanding the applicable scope of the production process.

[0055] After the plug is inserted into the plug hole, the connection strength between the ear hook plastic material and the pre-embedded component is increased. During the liquid silicone molding process and in the use after molding, the connection between the ear hook plastic material and the pre-embedded component is more secure and less prone to loosening or separation. This helps to improve the overall stability and durability of the ear hook and reduce product damage or failure caused by weak connection.

[0056] like Figures 1 to 4 As shown, the lower mold 1 in this embodiment is further provided with two spaced positioning protrusions 12, forming a first positioning groove 13 between them. The movable insert 2 is installed in the first positioning groove 13, and the forming groove 11 is provided on the positioning protrusions 12, and the two are arranged in a one-to-one correspondence. The side wall of each positioning protrusion 12 is also provided with a second positioning groove 121 corresponding to the second connecting block 42, and the top of each positioning protrusion 12 is provided with a third positioning groove 122 corresponding to the first connecting block 41.

[0057] Preferably, the design of the positioning protrusions and related positioning grooves is to ensure that the movable inserts and embedded components can be accurately installed on the lower mold.

[0058] During mold assembly, the movable insert is placed in the first positioning groove formed between the two positioning protrusions. The first positioning groove acts as a lateral limit for the movable insert, restricting its movement in the horizontal direction and ensuring that it can only be placed on the lower mold in a specific direction and position, thus guaranteeing the accurate position of the movable insert in the mold.

[0059] For the pre-embedded component, its second connecting block is placed in the second positioning groove on the side wall of the positioning protrusion, and the third positioning groove is used to place the first connecting block. These positioning grooves correspond one-to-one with the connecting blocks of the pre-embedded component. Through the tight fit between the groove and the block, the pre-embedded component is accurately positioned in the horizontal and vertical directions. In this way, during the molding process of liquid silicone injection into the mold, the movable insert and the pre-embedded component can maintain a stable position and will not be displaced due to factors such as the flow pressure of liquid silicone, thus ensuring the smooth progress of the molding process.

[0060] The first positioning groove precisely defines the position of the movable insert, making the positional deviation of the movable insert in the mold extremely small. When liquid silicone is injected into the mold, the movable insert can accurately participate in the molding process, ensuring the local shape and dimensional accuracy of the earphone hook. For example, if the position of the movable insert is inaccurate, it may cause uneven thickness or shape in some parts of the earphone hook that does not meet the design requirements.

[0061] The second and third positioning grooves ensure the precise positioning of the pre-embedded components within the mold, allowing the liquid silicone to evenly coat the ear hook plastic material. This guarantees the overall shape and dimensional accuracy of the ear hook, improving product consistency and quality.

[0062] The first positioning groove firmly fixes the movable insert to the lower mold. During the injection and molding process of liquid silicone, the movable insert will not shake or shift due to the impact of the liquid silicone. This helps to maintain the overall stability of the mold and reduce mold damage or molding defects caused by the movement of the movable insert.

[0063] The second and third positioning grooves fix the embedded components, keeping them stable within the mold. During the molding process, the embedded components will not change position due to the flow of liquid silicone, avoiding product quality problems caused by displacement of the embedded components. At the same time, it also reduces the additional impact force on the mold and extends the service life of the mold.

[0064] The design of the positioning protrusions and positioning grooves provides clear positioning marks for mold assembly. When assembling the mold, operators can quickly and accurately place the movable inserts and pre-embedded components in the corresponding positions, improving the efficiency of mold assembly.

[0065] Due to its high positioning accuracy, after the mold is assembled, there is no need to spend a lot of time debugging to ensure the accurate position of the moving inserts and embedded components. This allows the mold to be put into production more quickly and improves production efficiency.

[0066] like Figures 1 to 4 As shown, the first connecting block 41 in this embodiment includes a positioning block 411 and a snap-fit ​​block 412 connected thereto. The positioning block 411 can be connected to the third positioning groove 122, and the snap-fit ​​block 412 can be connected to one end of the ear hook plastic material 3. When the movable insert 2 is installed in the first positioning groove 13, the snap-fit ​​block 412 with the ear hook plastic material 3 is located in the corresponding molding groove 11. With this design, it can be ensured that the part of the ear hook plastic material 3 that needs to be molded with liquid silicone is installed in the molding groove 11, ensuring the normal molding of the ear hook.

[0067] Preferably, the positioning block 411 in the first connecting block 41 is connected to the third positioning groove 122 on the top of the positioning protrusion 12 on the lower mold 1. This connection process plays a preliminary positioning role for the first connecting block 41, fixing it in a specific position on the mold.

[0068] The snap-fit ​​block 412 is connected to one end of the ear loop plastic material 3. Through this connection method, the ear loop plastic material 3 is associated with the first connecting block 41, thereby establishing a connection with the entire mold system.

[0069] When the movable insert 2 is installed into the first positioning groove 13, since the first connecting block 41 has been positioned by the positioning block 411, the snap-fit ​​block 412 with the ear loop plastic material 3 will naturally be in the corresponding molding groove 11.

[0070] After all components are installed in place, liquid silicone is injected into the mold. Since the part of the ear hook plastic material 3 that needs to be molded by liquid silicone is already accurately located in the molding groove 11, the liquid silicone will fill the space of the molding groove 11, covering the corresponding part of the ear hook plastic material 3. After curing and other processes, the ear hook that meets the design requirements is finally formed.

[0071] By cooperating with the positioning block 411 and the third positioning groove 122, and by connecting the snap-fit ​​block 412 with the ear hook plastic material 3, the ear hook plastic material 3 can be accurately placed in the molding groove 11. This ensures that the liquid silicone can evenly cover the part of the ear hook plastic material 3 that needs to be molded during the molding process, avoiding problems such as inconsistent molding thickness and irregular shape caused by position deviation, thereby improving the molding accuracy and quality of the earphone ear hook.

[0072] This design integrates the positioning and installation process of the ear loop plastic material 3 into the installation process of the first connecting block 41. The operator only needs to accurately install the first connecting block 41 into the third positioning groove 122 to simultaneously complete the positioning of the ear loop plastic material 3, reducing the steps of positioning and adjusting the ear loop plastic material 3 separately and improving the efficiency of mold assembly.

[0073] Because of the high precision of the fit between the components, it is not necessary to spend a lot of time adjusting the position of the ear loop plastic material 3 during the production process, which reduces the number of defective and scrap products caused by improper adjustment and lowers the adjustment cost and time cost in the production process.

[0074] The connection between the snap-fit ​​block 412 and the ear hook plastic material 3 provides a relatively stable fixing effect. During the liquid silicone injection and molding process, the ear hook plastic material 3 will not easily shift or shake. This helps to ensure the bonding quality between the liquid silicone and the ear hook plastic material 3, and enhances the structural stability and durability of the earphone ear hook.

[0075] like Figures 1 to 4 As shown, in this embodiment, a first positioning component is also provided between the first positioning groove 13 and the movable insert 2. The first positioning component includes a first positioning hole 5 and a first positioning post 6. Preferably, in order for the movable insert 2 to be able to be placed flat on the plane, the first positioning hole 5 is usually provided on the movable insert 2, and the first positioning post 6 is provided in the first positioning groove 13.

[0076] Preferably, when it is necessary to assemble the movable insert 2 into the first positioning groove 13 of the lower mold 1, the operator will align the movable insert 2 with the position of the first positioning groove 13. Since the first positioning hole 5 is located on the movable insert 2 and the first positioning post 6 is located in the first positioning groove 13, as the movable insert 2 gradually approaches the first positioning groove 13, the first positioning post 6 will naturally align with the first positioning hole 5. As the movable insert 2 moves further downward, the first positioning post 6 will be inserted into the first positioning hole 5.

[0077] After the first positioning pin 6 is inserted into the first positioning hole 5, a mating relationship is formed between the two. This mating restricts the movement and rotation freedom of the movable insert 2 in the horizontal direction, so that the movable insert 2 can be accurately installed in the predetermined position in the first positioning groove 13. In the subsequent liquid silicone molding process, the movable insert 2 can maintain a stable position, ensuring the smooth progress of the molding process.

[0078] The cooperation between the first positioning post 6 and the first positioning hole 5 enables high-precision positioning. The first positioning component can accurately position the movable insert 2 to within millimeters or even smaller error ranges. This is crucial for products like earphone ear hooks that require high molding precision, ensuring that the liquid silicone accurately fills the required area during molding, thereby improving the molding quality and dimensional accuracy of the product.

[0079] During mass production, each active insert 2 is positioned by the same first positioning component, ensuring that the forming position and size of each product are highly consistent. This helps to improve the overall quality of the product, reduce product differences caused by inaccurate positioning, and improve the product qualification rate and market competitiveness.

[0080] After the first positioning pin 6 is inserted into the first positioning hole 5, it provides additional fixation and support for the movable insert 2. During the process of injecting liquid silicone into the mold, a certain amount of pressure and impact force will be generated. If the movable insert 2 is not effectively fixed, it may shift or shake, thereby affecting the molding quality of the product. The first positioning component can effectively resist these external forces, ensuring that the movable insert 2 remains stable during the molding process, and reducing the number of defective and scrap products caused by the displacement of the movable insert.

[0081] Because the movable insert 2 is more stable during assembly and use, it reduces friction and collision with other parts of the mold, reduces the wear of the mold, which helps to extend the service life of the mold, reduce the replacement cost and maintenance frequency of the mold, and improve production efficiency and economic benefits.

[0082] The design of the first positioning component makes the assembly process of the movable insert 2 simpler and more intuitive. The operator only needs to align the movable insert 2 with the first positioning groove 13 and insert the first positioning post 6 into the first positioning hole 5 to complete the assembly. There is no need to perform complicated adjustment and positioning operations. This reduces the skill requirements of the operator, improves the assembly efficiency, and reduces the assembly time and labor costs.

[0083] When the mold needs to be cleaned, repaired, or parts replaced, the first positioning component also facilitates the disassembly of the movable insert 2. The operator only needs to lift the movable insert 2 upwards so that the first positioning pin 6 can be pulled out of the first positioning hole 5, and the movable insert 2 can be easily removed from the first positioning groove 13. This makes the mold maintenance and upkeep work more convenient and faster, reduces downtime, and improves the continuity of production.

[0084] like Figures 1 to 4 As shown, the movable insert 2 in this embodiment includes an assembly section 21 and positioning sections 22 located at both ends of the assembly section 21. The assembly section 21 is correspondingly arranged with the first positioning groove 13. A second positioning component is provided between the lower mold 1 and the positioning section 22. The second positioning component includes a second positioning hole 7 and a second positioning post 8. Preferably, in order for the movable insert 2 to be able to be placed flat on the plane, the second positioning hole 7 is usually located on the positioning section 22, and the second positioning post 8 is located on the lower mold 1.

[0085] Preferably, when assembling the movable insert 2 into the lower mold 1, the operator first moves the movable insert 2 as a whole towards the first positioning groove 13 and the corresponding position of the lower mold 1. When the movable insert 2 approaches the lower mold 1, the second positioning hole 7 located on the positioning section 22 will gradually approach the second positioning post 8 on the lower mold 1. As the movable insert 2 continues to move downward, the second positioning post 8 will be inserted into the second positioning hole 7. At the same time, the assembly section 21 will also gradually enter the first positioning groove 13. In this process, the second positioning component and the first positioning component work together to complete the positioning and assembly of the movable insert 2.

[0086] After the second positioning pin 8 is inserted into the second positioning hole 7, it further restricts the displacement and rotation of the movable insert 2 in the horizontal direction. Combined with the positioning of the main body of the movable insert 2 by the first positioning component, the movable insert 2 can be accurately fixed in the predetermined position in all directions. During the liquid silicone molding process, even if subjected to the pressure and impact force when the liquid silicone is injected, the movable insert 2 can remain stable, ensuring the molding accuracy and quality.

[0087] The first positioning component mainly positions the assembly section 21 of the movable insert 2, while the second positioning component positions the positioning sections 22 at both ends of the movable insert 2. This multi-dimensional positioning method can accurately control the movable insert 2 from multiple directions, greatly improving the positioning accuracy of the movable insert 2 in the mold. For products such as earphone ear hooks with complex structures and extremely high molding accuracy requirements, it can ensure that liquid silicone can be accurately molded in various parts, thereby improving the dimensional accuracy and appearance quality of the product.

[0088] Relying solely on the first positioning component may result in certain positioning errors, especially when the movable insert 2 is long or has a complex structure. The second positioning component can effectively eliminate these potential errors, making the installation position of the movable insert 2 more accurate. In mass production, the molding position and size of each product can be highly consistent, improving product consistency and stability.

[0089] During the process of injecting liquid silicone into the mold, the movable insert 2 is subjected to greater pressure and impact. The presence of the second positioning component makes the force on the movable insert 2 more uniform, distributing the external force to both ends of the movable insert 2 and reducing the pressure borne by the assembly section 21 alone. This helps to prevent the movable insert 2 from deforming or shifting due to uneven force, ensuring that the movable insert 2 remains stable during the molding process and improving the molding quality of the product.

[0090] After the second positioning pin 8 is inserted into the second positioning hole 7, it provides additional support and fixation for both ends of the movable insert 2, which can effectively prevent the movable insert 2 from shaking and shifting in the horizontal and vertical directions. Even if the mold is subjected to vibration or other external force interference, the movable insert 2 can remain stable, reducing the number of defective and scrap products caused by the instability of the movable insert.

[0091] The second positioning component works in conjunction with the first positioning component, making the assembly process of the movable insert 2 smoother and more efficient. When assembling, the operator only needs to align the first positioning post 6 with the first positioning hole 5 and the second positioning post 8 with the second positioning hole 7 at the same time to quickly complete the installation of the movable insert 2. This standardized assembly method reduces the skill requirements of the operator, improves the assembly efficiency, and reduces the assembly time and labor costs.

[0092] like Figures 1 to 4 As shown, preferably, the number of pre-embedded components 4 in this embodiment is four. Two pre-embedded components 4 are provided on each side of the movable insert 2. Two injection channels 14 are provided on the lower mold 1. The two ends of each injection channel 14 are connected to the molding grooves 11 located on both sides of it.

[0093] In this mold design, two pre-embedded components 4 are set on each side of the movable insert 2. During the mold preparation stage, the ear-hook plastic material 3 is installed on the pre-embedded components 4. After the movable insert 2 is assembled on the lower mold 1, the pre-embedded components are in the appropriate position of the molding groove 11, which is ready for the subsequent injection molding of liquid silicone.

[0094] During injection molding, liquid silicone enters the injection channel 14 from the injection molding equipment. Since the two ends of each injection channel 14 are connected to the molding grooves 11 located on both sides, the liquid silicone will flow from the injection channel 14 to the molding grooves 11 under pressure. In this way, the liquid silicone can simultaneously fill multiple molding grooves 11 and wrap the embedded parts on the embedded components 4 to achieve product molding.

[0095] The arrangement of four pre-embedded components 4 allows multiple pre-embedded parts to be encapsulated and molded simultaneously in a single injection molding process, significantly shortening the production cycle compared to injection molding each part individually. Simultaneously, the two injection channels 14 can simultaneously deliver liquid silicone to multiple molding grooves 11, further accelerating the molding speed and increasing product output per unit time.

[0096] Because multiple products can be molded simultaneously, the number of times the mold is opened and closed is reduced. The opening and closing of the mold requires a certain amount of time and energy. Reducing the number of opening and closing not only improves production efficiency but also reduces the energy consumption and wear of the equipment.

[0097] The simultaneous injection of liquid silicone into the molding grooves 11 by the two injection channels 14 can make the injection pressure in each molding groove 11 more uniform. The uniform pressure helps the liquid silicone to better fill the molding grooves 11 and wrap the embedded parts, avoiding product defects such as air bubbles and missing glue caused by uneven pressure, thereby ensuring the quality consistency of each product.

[0098] The pre-embedded components 4 are symmetrically arranged on both sides of the movable insert 2, which makes the product more balanced in terms of force during the molding process. This symmetrical structure helps to ensure the dimensional accuracy and shape stability of the product and improve the overall quality of the product.

[0099] The four pre-embedded components 4 are reasonably arranged on both sides of the movable insert 2, making full use of the space of the movable insert 2. At the same time, the setting of the two injection channels 14 also realizes efficient liquid silicone delivery within the limited space of the lower mold 1, making the mold structure more compact, reducing the mold's footprint, and lowering the mold manufacturing cost.

[0100] This layout makes the positions of the embedded components 4 and the injection channel 14 relatively independent and easy to operate. When maintaining the mold or replacing parts, the operator can easily inspect, repair or replace each embedded component 4, and it is also convenient to clean and unclog the injection channel 14, thus improving the maintainability of the mold.

[0101] By molding the product simultaneously through multiple molding grooves 11, the waste of liquid silicone during the injection molding process is reduced. Since the liquid silicone can fill multiple molding grooves 11 at the same time, excess silicone residue is avoided during multiple injection molding processes, thereby improving material utilization and reducing raw material costs.

[0102] like Figures 1 to 4 As shown, the top of the movable insert 2 in this embodiment is also provided with a lifting handle 23, which makes it convenient for employees to put the movable insert 2 into the lower mold 1 or remove it from the lower mold 1 by lifting the handle 23.

[0103] During the mold operation, the movable insert 2 needs to be frequently inserted into or removed from the lower mold 1. The lifting handle 23, as a component that facilitates the application of force, provides an ergonomic point for the employee. When the employee needs to insert the movable insert 2 into the lower mold 1, they hold the lifting handle 23 and lift the movable insert 2 upwards to move it to the corresponding position in the lower mold 1. Then, the movable insert 2 is accurately placed into the mounting slot of the lower mold 1. When removing the movable insert 2, the employee also holds the lifting handle 23 and applies upward pulling force to overcome the friction between the movable insert 2 and the lower mold 1, as well as any possible suction forces, and removes the movable insert 2 from the lower mold 1.

[0104] The movable insert 2 usually has a certain weight. When it is loaded or unloaded by directly grabbing the edge or other parts of the movable insert 2 with your hands, it is not only difficult to find a suitable point of force, but also easy for the movable insert 2 to slip due to unstable grip. The lifting handle 23 provides employees with an ergonomic point of force. Employees can lift and move the movable insert 2 more easily by pulling the handle 23, which greatly reduces the physical burden during operation.

[0105] Using the lifting handle 23 can prevent employees from directly contacting the sharp edges or hot surfaces of the movable insert 2, reducing the risk of injury to employees during operation and improving operational safety.

[0106] With the lifting handle 23, employees can complete the installation and removal of the movable insert 2 more quickly. Compared with the case without the lifting handle 23, employees do not need to spend time finding the appropriate force application method and position, and can quickly and accurately install the movable insert 2 onto or remove it from the lower mold 1, thereby shortening the mold replacement and maintenance time and improving production efficiency.

[0107] The lifting handle 23 helps employees to smoothly lift and place the movable insert 2. During loading and unloading, it allows for better control of the movement direction and position of the movable insert 2, preventing collisions or misalignments between the movable insert 2 and the lower mold 1. This is crucial for ensuring the fitting accuracy between the movable insert 2 and the lower mold 1, reducing mold wear and precision degradation caused by improper loading and unloading, and extending the mold's service life.

[0108] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An ear loop liquid silicone mold structure, characterized in that: It includes a lower mold (1) and a movable insert (2) detachably connected to the lower mold (1). The movable insert (2) is provided with multiple pre-embedded components (4) that can be pre-assembled with corresponding ear loop plastic materials (3). The lower mold (1) is provided with a molding groove (11) corresponding to the pre-embedded components (4).

2. The ear hook liquid silicone mold structure according to claim 1, characterized in that: Multiple of the pre-embedded components (4) are arranged in a circular array around the center of the movable insert (2).

3. The ear hook liquid silicone mold structure according to claim 1, characterized in that: Each of the pre-embedded components (4) includes a first connecting block (41) and a second connecting block (42) that are respectively connected to both ends of the ear loop plastic material (3).

4. The ear hook liquid silicone mold structure according to claim 3, characterized in that: Each of the pre-embedded components (4) further includes a plug-in block (43), each of the plug-in blocks (43) being able to be inserted into the plug-in hole (31) of the corresponding ear loop plastic material (3), the plug-in hole (31) being located on one side of the end of the ear loop plastic material (3) connected to the first connecting block (41).

5. The ear hook liquid silicone mold structure according to claim 3, characterized in that: The lower mold (1) is also provided with two spaced positioning protrusions (12), forming a first positioning groove (13) between them. The movable insert (2) is installed in the first positioning groove (13). The forming groove (11) is provided on the positioning protrusions (12), and the two are arranged in a one-to-one correspondence. The side wall of each positioning protrusion (12) is also provided with a second positioning groove (121) corresponding to the second connecting block (42). The top of each positioning protrusion (12) is provided with a third positioning groove (122) corresponding to the first connecting block (41).

6. The ear hook liquid silicone mold structure according to claim 5, characterized in that: The first connecting block (41) includes a positioning block (411) and a snap-fit ​​block (412) connected thereto. The positioning block (411) can be connected to the third positioning groove (122), and the snap-fit ​​block (412) can be connected to one end of the ear loop plastic material (3). When the movable insert (2) is installed in the first positioning groove (13), the snap-fit ​​block (412) with the ear loop plastic material (3) is located in the corresponding molding groove (11).

7. The ear loop liquid silicone mold structure according to claim 5, characterized in that: A first positioning component is provided between the first positioning groove (13) and the movable insert (2), the first positioning component including a first positioning hole (5) and a first positioning post (6).

8. The ear hook liquid silicone mold structure according to claim 5, characterized in that: The movable insert (2) includes an assembly section (21) and positioning sections (22) located at both ends of the assembly section (21). The assembly section (21) is correspondingly arranged with the first positioning groove (13). A second positioning component is provided between the lower mold (1) and the positioning section (22). The second positioning component includes a second positioning hole (7) and a second positioning post (8).

9. The ear hook liquid silicone mold structure according to claim 1, characterized in that: The number of the pre-embedded components (4) is four. Two pre-embedded components (4) are provided on each side of the movable insert (2). Two injection channels (14) are provided on the lower mold (1). The two ends of each injection channel (14) are connected to the molding grooves (11) located on both sides of it.

10. The ear hook liquid silicone mold structure according to claim 1, characterized in that: The top of the movable insert (2) is also provided with a lifting handle (23).

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