Precise stable-pressure glue injection device for loudspeaker

Abstract

The utility model discloses a loudspeaker precise pressure-stabilizing glue injection device, which comprises a glue barrel used for accommodating glue, the bottom of which is connected with a glue nozzle, and the inside of which is provided with a piston used for pushing the glue to flow out from the glue nozzle; the air cylinder is arranged above the glue barrel and is provided with a piston rod which extends into the glue barrel and is connected with the piston; the precise pressure reducing valve is connected to the air cylinder and used for providing stable and controllable air pressure for the air cylinder. The piston rod of the air cylinder directly extends into the glue barrel to push glue, and the glue injection reaction is more sensitive; in addition, the precise pressure reducing valve is used for providing stable and controllable air pressure for the air cylinder, and precise control over the glue injection amount is achieved. According to the invention, poor performance, poor appearance and the like caused by large and small amount of glue can be reduced, manual intervention debugging can be reduced, the utilization rate of production line equipment is increased, the glue injection stability is improved, and the product quality is improved.

Description

Technical Field

[0001] This application relates to the field of loudspeaker fixture technology, specifically to a loudspeaker precision voltage stabilizing glue injection device. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals. Loudspeakers can be installed in home televisions, multimedia home audio systems, outdoor audio systems, cars, karaoke venues, public address systems, computers, etc., and their function is to act as a sound-generating unit.

[0003] The manufacturing process of loudspeakers requires the use of glue dispensing machines. Currently, the commonly used glue dispensing machines in the industry typically include circular dispensing machines. Circular dispensing machines can only dispense glue in a circular path. They use ordinary pressure regulators, with a pressure accuracy typically between 0.5 MPa and 0.8 MPa. Due to significant fluctuations in pressure accuracy, coupled with insufficient air supply during production or multiple production lines operating simultaneously, the glue dispensing amount often falls short of expectations, frequently exceeding the specifications set in the process. The unstable pressure and inconsistent glue dispensing significantly impact production operations, a major challenge in the industry. Frequently, unstable pressure necessitates manual intervention to adjust the equipment, greatly reducing production efficiency. Furthermore, since products requiring adjustment are often scrapped or reworked, this increases costs. Utility Model Content

[0004] The main technical problem addressed in this application is to propose a precision voltage-stabilizing glue-filling device for loudspeakers.

[0005] This application discloses a precision pressure-stabilizing glue dispensing device for loudspeakers, comprising: a glue bucket for holding glue, with a glue nozzle connected to the bottom and a piston inside for pushing the glue to flow out from the glue nozzle; a cylinder disposed above the glue bucket, having a piston rod extending into the glue bucket and connected to the piston; and a precision pressure reducing valve connected to the cylinder for providing stable and controllable air pressure to the cylinder.

[0006] In some alternative embodiments, it further includes: a body for supporting the glue bucket and the cylinder; and a retaining ring for fixing the glue bucket to the body.

[0007] In some alternative embodiments, the piston is in a sealed sliding connection with the inner wall of the glue bucket.

[0008] In some alternative embodiments, the top of the glue bucket has an opening that allows the piston rod to extend into it.

[0009] In some alternative embodiments, the lower port diameter of the glue bucket is reduced.

[0010] In some alternative implementations, the nozzle is either tightly fitted to or threadedly connected to the glue container.

[0011] In summary, this application proposes a precision voltage-stabilizing glue-filling device for loudspeakers, achieving the following technical effects:

[0012] 1. The piston rod of the cylinder is directly inserted into the glue bucket to push the glue, resulting in a more sensitive glue injection response;

[0013] 2. A precision pressure reducing valve is used to provide stable and controllable air pressure to the cylinder, enabling precise control of the amount of adhesive injected.

[0014] The device described in this application is characterized by using a cylinder to directly push the piston inside the glue tank, and controlling the amount of glue applied through a precision pressure regulating valve. This method can achieve uniform glue dispensing with greater consistency in the amount of glue dispensed each time. In the loudspeaker manufacturing process, this is very beneficial for some important glue dispensing positions, such as the paper cone center glue and the dust cap glue. The dispensing stability of these two types of glue directly affects the high-frequency trend of the loudspeaker curve and the change in vibration quality (Mms).

[0015] This device helps solve the common problems of unstable glue dispensing pressure and inconsistent glue volume in the loudspeaker industry. It can be used in high-precision glue dispensing products or high-precision glue dispensing stations to reduce performance and appearance defects caused by excessive or insufficient glue volume. Because this device has an automatic stabilization effect, no manual intervention is required for adjustment, which greatly increases the utilization rate of production line equipment and reduces the adjustment time due to unstable air pressure. It also greatly reduces the problems of product consistency and reliability, improves glue dispensing stability, and enhances product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments and the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of the speaker precision voltage stabilizing glue injection device according to an embodiment of this application;

[0018] Figure 2 This is a side view of the speaker precision voltage stabilizing glue injection device according to an embodiment of this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0020] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] The following detailed descriptions will be provided through specific embodiments.

[0022] refer to Figure 1 and Figure 2 This application discloses a precision voltage-stabilizing glue-filling device for loudspeakers, comprising:

[0023] The glue bucket 11 is used to hold glue, and a glue nozzle 12 is connected to the bottom. Inside, there is a piston 13 for pushing the glue out of the nozzle.

[0024] The cylinder 14 is disposed above the glue bucket 11 and has a piston rod 15 that extends into the glue bucket 11 and is connected to the piston 13;

[0025] A precision pressure reducing valve 16 is connected to the cylinder 14 and is used to provide a stable and controllable air pressure to the cylinder 14.

[0026] Body 17, used to support glue bucket 11 and cylinder 14;

[0027] The retaining ring 18 is used to fix the glue bucket 11 to the body 17.

[0028] Optionally, the piston 13 is slidably connected to the inner wall of the glue bucket 11.

[0029] Optionally, the glue bucket 11 has an opening at the top, allowing the piston rod 15 to extend in.

[0030] Optionally, the lower port diameter of the glue bucket 11 is reduced to be equivalent to that of the glue nozzle 12 and connected to the glue nozzle 12.

[0031] Optionally, the nozzle 12 can be tightly fitted to the glue container 11, or connected by a thread or other means.

[0032] Optionally, in this application, the cylinder 14 and its piston rod 15, the glue bucket 11 and the glue nozzle 12 are arranged vertically, so that the glue can only be squeezed out in the vertical direction. Since the change of the glue flow direction is avoided, it helps to improve the control accuracy of the glue injection amount.

[0033] Optionally, the body 17 may include a vertical portion, an upper horizontal portion extending laterally from the top of the vertical portion, and a lower horizontal portion extending laterally from the bottom of the vertical portion. The cylinder 14 can be fixed to the upper horizontal portion by means of screws or the like. The upper horizontal portion may have a through hole allowing the piston rod 15 to pass through. The glue bucket 11 may be disposed on the lower horizontal portion, and the lower horizontal portion may have a through hole to allow the glue nozzle 12 to be connected to the glue bucket 11. A retaining ring 18 may surround and secure the glue bucket 11 and be connected to the vertical portion of the body 17. The body 17 and the retaining ring 18 together firmly fix the glue bucket 11 and the cylinder 14.

[0034] Here, the piston rod 15 of the cylinder 14 extends into the glue tank 11, pushing the piston 13 to squeeze the glue inside the glue tank 11 and discharge it through the nozzle 12. During this process, the precision pressure reducing valve 16 is connected to the air inlet channel of the cylinder 14, providing a stable and controllable air pressure to the cylinder 14 through precise pressure stabilization, so that the piston rod 13 moves stably and accurately, achieving uniform and stable glue discharge.

[0035] Before use, the desired air pressure stabilization parameters of the precision pressure reducing valve 16 can be set. The air pressure can be set within the range of 0.05 to 0.5 MPa, for example, 0.5 MPa. In this way, when gas from the air pipe passes through the precision pressure reducing valve 16, the valve maintains the passing air pressure at 0.5 MPa through precise pressure stabilization. The gas then enters the cylinder 14, which, under stable air pressure, pushes the piston 13 inside the glue container 11, dispensing glue through the nozzle 12, thereby achieving stable and uniform glue dispensing and improving glue consistency.

[0036] The advantages of the device in this application in terms of voltage stabilization may include:

[0037] 1. A precision stabilizing valve is used to stabilize the air pressure, thereby achieving uniform and stable glue dispensing and improving consistency.

[0038] 2. Compared with ordinary valves, it has higher precision. The pressure stabilization range of the precision stabilizing valve can be 0.05 to 0.5 MPa.

[0039] 3. When the pressure is adjusted to 0.5 MPa, if the air pressure becomes unstable, the precision pressure reducing valve 16 will actively intervene to adjust it: if the air pressure is less than 0.5 MPa, it will supplement the pressure to reach 0.5 MPa; if the air pressure is greater than 0.5 MPa, it will automatically release the excess air pressure to achieve a stable air pressure.

[0040] 4. The air pressure is controllable and can be stabilized. Compared with ordinary valves in traditional dispensing machines, its effect is very suitable for products with high dispensing precision. Its precision is stable and reliable, its design price is reasonable, its cost is low, and it can provide strong support for the production process.

[0041] The structural advantages of the device in this application may include:

[0042] The piston rod of the cylinder is directly inserted into the glue bucket to push the glue, resulting in a more sensitive glue injection response. When used in conjunction with a precision stabilizing valve, it achieves advantages such as extremely high control accuracy, simple and reliable structure, and low cost.

[0043] In summary, the technical effects achieved by the device of this application include, but are not limited to:

[0044] This precision pressure-stabilizing dispensing device addresses the common problem of unstable dispensing pressure in the speaker industry. By employing a precision stabilizing valve, it achieves stable dispensing and is used in high-precision dispensing products or stations. This reduces performance and appearance defects caused by varying glue volume. Because the device has an automatic stabilizing effect, no manual intervention is required, significantly increasing production line equipment utilization and reducing setup time due to unstable pressure. Furthermore, this device greatly reduces issues with product consistency and reliability, improves dispensing stability, and enhances product quality.

[0045] The technical solution of this application has been described in detail above through specific embodiments. In the above embodiments, the descriptions of each embodiment have their own emphasis, and for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0046] It should be understood that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and protection scope of the technical solutions of the embodiments of this application.

Claims

1. A precision voltage-stabilizing glue-filling device for loudspeakers, characterized in that, include: A glue bucket for holding glue, with a glue nozzle connected to the bottom and a piston inside for pushing the glue out of the glue nozzle; A cylinder, disposed above the glue bucket, has a piston rod that extends into the glue bucket and is connected to the piston; A precision pressure reducing valve is connected to the cylinder to provide a stable and controllable air pressure to the cylinder. The main body is used to support the glue bucket and the cylinder; A retaining ring is used to fix the glue bucket to the body; The body includes a vertical part, an upper horizontal part extending laterally from the top of the vertical part, and a lower horizontal part extending laterally from the bottom of the vertical part. The cylinder is fixed on the upper horizontal part, and the upper horizontal part has a through hole that allows the piston rod to pass through. The glue bucket is disposed on the lower horizontal part, and the lower horizontal part has a through hole to allow the glue nozzle and the glue bucket to be connected. The fixing ring surrounds and secures the glue bucket and is connected to the vertical part of the body. The cylinder and its piston rod, the glue bucket and the glue nozzle are arranged vertically in a straight line.

2. The loudspeaker precision voltage stabilizing glue injection device according to claim 1, characterized in that, The piston is in a sealed sliding connection with the inner wall of the glue bucket.

3. The loudspeaker precision voltage stabilizing glue injection device according to claim 1, characterized in that, The glue bucket has an opening at the top, allowing the piston rod to extend into it.

4. The loudspeaker precision voltage stabilizing glue injection device according to claim 1, characterized in that, The lower end diameter of the glue bucket is reduced.

5. The loudspeaker precision voltage stabilizing glue injection device according to claim 1, characterized in that, The nozzle is either tightly fitted to or threadedly connected to the glue container.

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