Earplug oil injection jig and feeding device using the same

Abstract

The utility model is suitable for earplug mould technical field provides an earplug oil injection jig, including fixedly arranged lower mould base on vibration subassembly and with lower mould base can be opposite movable upper mould base, a plurality of mould cavities are equipped with on lower mould base, be equipped with the positioning column for setting up opposite on the mould cavity when closing die on upper mould base. The utility model discloses through setting up the mould cavity on lower mould base, fall into the mould cavity when the product vibration is convenient, and set up the positioning column for setting up opposite on the mould cavity when closing die on upper mould base, the setting of this positioning column is convenient to take out the product in the mould cavity, is convenient for subsequent oil injection operation's while improving work efficiency, and avoids the phenomenon that the product is blown down by air pressure when oil injection and leads to uneven oil injection or surface flower, thereby improving the product pass rate. The utility model discloses still discloses a kind of feeding device of using earplug oil injection jig.

Description

Technical Field

[0001] This utility model belongs to the field of earplug mold technology, and in particular relates to an earplug oil spraying fixture and a feeding device using the fixture. Background Technology

[0002] Silicone spray painting technology is widely used in the field of consumer electronics accessories, especially earphones. Its main purpose is to give the product a delicate and soft surface texture, so that consumers can have a better skin-friendly experience when using it, and improve the product's comfort and market competitiveness.

[0003] However, the current earbud spraying process mostly uses a traditional method, where the products are directly placed on a mesh tray for spraying. Because earbuds are small and lightweight, the ink is automatically sprayed onto the surface using air pressure, and this strong air pressure can easily blow the earbuds over. This not only leads to uneven spraying and surface defects such as mottling, affecting the product's appearance, but also results in low production efficiency, requiring a large amount of manual labor for product placement, adjustment, and handling of defective products, thus increasing labor costs. Utility Model Content

[0004] This invention provides an earplug oil spraying fixture and a feeding device using the fixture, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] An earplug oil spraying fixture includes a lower mold base fixedly mounted on a vibration assembly and an upper mold base movable relative to the lower mold base; the lower mold base is provided with an array of multiple mold cavities, and the upper mold base is provided with positioning pins that are positioned opposite to the mold cavities when the mold is closed.

[0007] As a further improvement, the upper mold base is provided with multiple clearance holes.

[0008] As a further improvement, the positioning post and the upper mold base are integrally injection molded structures.

[0009] As a further improvement, the mold cavity has a trapezoidal hole structure.

[0010] As a further improvement, a baffle is provided on the side of the lower mold base in a ring shape.

[0011] As a further improvement, the upper mold base is also provided with guide holes and handles at both ends.

[0012] As a further improvement, the lower mold base is provided with guide posts adapted to the guide holes and bolt holes for fixing to the vibration assembly.

[0013] As a further improvement, the upper mold base is made of aluminum plate.

[0014] A feeding device using an earplug oil spraying fixture includes a vibration mechanism and an earplug oil spraying fixture, wherein the earplug oil spraying fixture is disposed above the vibration mechanism.

[0015] The beneficial effects of this utility model are as follows: By setting a mold cavity on the lower mold base, the product can easily fall into the mold cavity when vibrating; and by setting a positioning post on the upper mold base that is positioned opposite to the mold cavity when the mold is closed, the product in the mold cavity can be easily removed, which facilitates subsequent oil spraying operations and improves work efficiency; and avoids uneven oil spraying or surface defects caused by air pressure blowing the product over during oil spraying, thereby improving the product qualification rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the upper mold base provided in an embodiment of the present invention;

[0018] Figure 2 This is a top view of the upper mold base provided in this embodiment of the utility model;

[0019] Figure 3 This is a front view of the upper mold base provided in this embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lower mold base provided in this embodiment of the utility model;

[0021] Figure 5 This is a rear view of the lower mold base provided in an embodiment of this utility model.

[0022] Figure label:

[0023] 1-Lower mold base; 2-Upper mold base; 3-Mold cavity; 4-Positioning pin; 5-Void hole; 6-Guide hole; 7-Handle; 8-Bolt hole; 9-Strip through hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Reference Figure 1-5 As shown, an earplug spraying fixture includes a lower mold base 1 fixedly mounted on a vibration assembly and an upper mold base 2 movable relative to the lower mold base 1. The lower mold base 1 has multiple mold cavities 3 arranged in an array, and the upper mold base 2 has positioning pins 4 positioned opposite to the mold cavities 3 during mold closing. In this embodiment, the multiple mold cavities 3 arranged in an array on the lower mold base 1 facilitate the placement of multiple products into the mold cavities 3 during vibration feeding by the vibration assembly. Then, when the upper and lower molds are assembled, the positioning pins 4, positioned on the upper mold base 2 and corresponding to the mold cavities 3, are inserted into the inner holes of the products, allowing the products to fit onto the positioning pins 4, thereby achieving rapid removal of the products from the mold cavities 3 and improving material handling efficiency. The positioning pins 4 effectively fix the products, preventing them from being blown over by air pressure issues during spraying, which could lead to uneven spraying, surface defects, or dirt. Furthermore, the upper mold base 2 fixes the products, resulting in more uniform spraying, a more perfect appearance, and a smoother feel. In addition, the length of the positioning post 4 is greater than the length of the earpiece to be sprayed with oil, which facilitates more comprehensive oil spraying in the future.

[0027] This invention features a mold cavity 3 on the lower mold base 1, facilitating the product's entry into the cavity during vibration. A positioning post 4, positioned opposite the mold cavity 3 during mold closing, is located on the upper mold base 2. This positioning post 4 facilitates the removal of the product from the mold cavity 3, improving efficiency during subsequent painting operations. It also prevents uneven painting or surface defects caused by air pressure blowing the product over during painting, thus increasing the product qualification rate. Furthermore, setting the length of the positioning post 4 to be significantly greater than the product's hole depth enhances the all-around painting effect, further improving the product qualification rate.

[0028] Furthermore, the upper mold base 2 is provided with a plurality of clearance holes 5 arranged in an array. In this embodiment, the clearance holes 5 are configured as tapered holes to facilitate the rapid discharge of oil through the clearance holes 5 during oil spraying, thus preventing oil accumulation.

[0029] Furthermore, the positioning post 4 and the upper mold base 2 are integrally injection molded structures. In this embodiment, setting the positioning post 4 and the upper mold base 2 as an integrally molded structure improves the overall structural stability of the upper mold base 2.

[0030] Furthermore, the mold cavity 3 has a trapezoidal hole structure. In this embodiment, the mold cavity 3 is configured as a trapezoidal groove structure, that is, the mold cavity 3 consists of a first through hole located on the upper surface of the lower mold base 1 and a second through hole located below the first through hole and communicating with the first through hole. The diameter of the first through hole is larger than the diameter of the second through hole and the diameter of the product to be sprayed with oil, and the diameter of the product is larger than the diameter of the second through hole. This structure makes it easier for the earplug to fall into the mold cavity 3, avoiding the phenomenon of the earplug being embedded in the straight cylindrical through hole, and also makes it easier for the positioning post 4 of the upper mold base 2 to be better inserted into the product and removed.

[0031] Furthermore, a baffle is provided on the side of the lower mold base 1 in a ring shape. In this embodiment, the baffle is not shown in the figure, but is provided on the outer side of the lower mold base 1 in a ring shape to prevent the product from falling off during vibration feeding; preferably, the height of the baffle is set to a, and 5cm≤a≤15cm.

[0032] Furthermore, the upper mold base 2 is also provided with guide holes 6 and handles 7 at both ends. In this embodiment, a strip-shaped through hole 9 is provided in the middle of both ends of the upper mold base 2, thereby forming a handle 7, which makes it easier for the user to grip the upper mold base 2; preferably, the strip-shaped through hole 9 is an arc-shaped through hole, which facilitates the user's grip. Guide holes 6 are provided on both sides of the handle 7 to facilitate the guiding function when the upper mold base 2 and the lower mold base 1 are closed.

[0033] Furthermore, the lower mold base 1 is provided with guide posts adapted to the guide holes 6 and bolt holes 8 for fixing to the vibration assembly. In this embodiment, the guide posts adapted to the guide holes 6 are provided on the lower mold base 1 to facilitate the precise insertion of the product in the mold cavity 3 into the positioning posts 4. The bolt holes 8 facilitate the fixed installation of the lower mold base 1 on the vibration assembly, so that when the product vibrates, the lower mold will not become loose and cause problems with precise fit.

[0034] Furthermore, the upper mold base 2 is made of aluminum plate. In this embodiment, the upper mold base 2 is made of aluminum plate, which has better rust prevention and strong corrosion resistance, thereby improving the service life of the fixture.

[0035] A feeding device using an earplug spraying fixture includes a vibration mechanism and an earplug spraying fixture, wherein the earplug spraying fixture is disposed above the vibration mechanism. In this embodiment, the lower mold base 1 of the earplug spraying fixture is assembled with a vibration component (not shown in the diagram) of the vibration mechanism, which can automatically deliver the product to the mold cavity 3 of the lower mold base 1. Then, an upper mold base 2 is placed on the lower mold base 1 with the product loaded, transferring the product from the lower mold base 1. This solves the spraying problem and greatly improves the feeding efficiency.

[0036] The specific working principle of the earplug oil spraying fixture and the feeding device using the fixture is as follows: Before feeding, check whether the vibration mechanism and fixture are in good condition. Only after confirming that the fixture and vibration mechanism are normal can the mold be installed for formal production. First, install the upper mold base 2 on the vibration component with bolts through the bolt holes 8. After installation, check whether the fixture is firm. After confirming that it is firm, place the batch of products on the lower mold base 1, start the vibration mechanism, and let the products slide into the mold cavity 3 of the lower mold base 1 with the vibration of the mechanism. After the products slide into the mold cavity 3 of the lower mold base 1, press down with the positioning pin 4 of the upper mold base 2 aligned with the mold cavity 3 of the lower mold base 1, and then squeeze with a little force to remove the upper mold base 2. At this time, the products are already fitted on the positioning pin 4 of the upper mold base 2. Place the products fitted on the positioning pin 4 of the upper mold base 2 on the shelf to wait for oil spraying, and then repeat the above actions. After the upper mold base 2 is fully fitted, spray oil at the same time. After spraying oil, take out the products and repeat the above actions. Preferably, in order to improve efficiency, two sets of fixtures can be installed on both sides of the vibration mechanism at the same time. When the vibration mechanism is working, the product can vibrate and slide into the mold cavity 3 of the lower mold base 1 at the same time, which will be more efficient.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An earplug oil spraying fixture, characterized in that: It includes a lower mold base (1) fixedly mounted on the vibration assembly and an upper mold base (2) movable relative to the lower mold base (1); the lower mold base (1) is provided with a plurality of mold cavities (3) arranged in an array, and the upper mold base (2) is provided with positioning pins (4) arranged relative to the mold cavities (3) when the mold is closed.

2. The earplug oil spraying fixture according to claim 1, characterized in that, The upper mold base (2) is provided with multiple clearance holes (5).

3. The earplug oil spraying fixture according to claim 1, characterized in that, The positioning post (4) and the upper mold base (2) are integral injection molded structures.

4. The earplug oil spraying fixture according to claim 1, characterized in that, The mold cavity (3) has a trapezoidal hole structure.

5. The earplug oil spraying fixture according to claim 1, characterized in that, The lower mold base (1) has a baffle plate on its side ring.

6. The earplug oil spraying fixture according to claim 1, characterized in that, The upper mold base (2) is also provided with guide holes (6) and handles (7) at both ends.

7. The earplug oil spraying fixture according to claim 6, characterized in that, The lower mold base (1) is provided with guide posts adapted to the guide hole (6) and bolt holes (8) for fixing to the vibration assembly.

8. The earplug oil spraying fixture according to claim 6, characterized in that, The upper mold base (2) is made of aluminum plate.

9. A feeding device using an earplug oil spraying fixture, characterized in that, It includes a vibration mechanism and an earplug oil spraying fixture as described in any one of claims 1-8, wherein the earplug oil spraying fixture is disposed above the vibration mechanism.

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