Equipment for pasting breathable film on loudspeaker rear cover

Abstract

The utility model discloses equipment for pasting a breathable film on a loudspeaker rear cover, which comprises a processing table, and a positioning component and a film pasting component are arranged on the processing table; the positioning assembly is used for positioning the loudspeaker rear cover and comprises a boss, and a circular groove used for containing the loudspeaker rear cover is formed in the upper side face of the boss. A ventilation groove penetrating downwards is formed in the bottom face of the circular groove, and an air pump connected to the ventilation groove is further arranged in the machining table. According to the utility model, the boss used for bearing the loudspeaker rear cover is installed through screws, and is easy to disassemble and assemble, so that the loudspeaker rear cover mounting structure can be adapted to loudspeaker rear covers of different specifications, and the application range of the loudspeaker rear cover mounting structure is enlarged; the built-in air pump can blow air in time after the breathable film is installed on the horn rear cover so as to test whether the breathable film is installed stably or not.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker manufacturing technology, and in particular to a device for attaching a breathable membrane to the back cover of a loudspeaker. Background Technology

[0002] In order to ensure that the diaphragm in the speaker can vibrate normally without being affected by air pressure, which could lead to obstructed movement or distortion of sound quality, speakers are generally equipped with vent holes. To prevent water from entering the vent holes and damaging the speaker, a vent membrane is usually installed in the vent holes.

[0003] Currently, breathable membranes are generally installed by means of adhesive, ultrasonic welding, or hot pressing to fix them inside the speaker. However, as shown in the automatic breathable membrane bonding device disclosed in application number 202122841780.0, the current breathable membrane installation equipment does not immediately test the installation firmness of the breathable membrane after installation, which easily results in defective products where the breathable membrane is easy to detach. Therefore, it needs to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for attaching a breathable membrane to the back cover of a speaker, thereby solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a device for applying a breathable film to the back cover of a speaker, including a processing table, on which a positioning component and a film application component are provided;

[0006] The positioning component is used to position the speaker back cover, and the positioning component includes a boss, the upper side of which is provided with a circular groove for accommodating the speaker back cover.

[0007] The bottom surface of the circular groove is provided with a downward-through ventilation groove, and the processing table is also provided with an air pump connected to the ventilation groove; the film-applying assembly is used to fix the ventilation film to the speaker back cover located in the circular groove.

[0008] Preferably, the boss is detachable and replaceable, and the circular groove and the ventilation groove in different bosses have different shapes. The boss is fixed to the upper side of the processing table by screws.

[0009] Preferably, the processing table is provided with an inner groove, which is covered by the boss and is connected to each of the ventilation grooves. The air outlet of the air pump is connected to the bottom surface of the inner groove.

[0010] Preferably, a transverse groove is provided on the side of the circular groove, and a pressure rod is slidably connected to the transverse groove. A clamping cylinder is provided on the processing table, and the first piston rod in the clamping cylinder is directly opposite the pressure rod.

[0011] Preferably, a spring plate is fixedly provided on the outside of the pressure rod, and the spring plate is connected to the outer side of the boss by a spring.

[0012] Preferably, the film-applying assembly includes a lifting platform mounted on the processing table, and one of a hot press and an ultrasonic welding machine is mounted on the lower side of the lifting platform, with the hot press head in the hot press or the welding head in the ultrasonic welding machine facing the vent hole in the rear cover of the speaker in the circular groove.

[0013] Preferably, the processing table is provided with a bracket, and a lifting cylinder is fixed on the bracket. The lifting table is fixed to the lower end of the second piston rod inside the lifting cylinder, and the lifting table is slidably connected to the bracket.

[0014] Preferably, a flow sensor is installed inside the tank.

[0015] This utility model provides a device for attaching a breathable membrane to the back cover of a speaker, which has the following beneficial effects:

[0016] The protrusion in this utility model for supporting the speaker back cover is installed with screws, which is easy to install and disassemble, so that this utility model can be adapted to speaker back covers of different specifications, thus increasing the scope of application of this utility model.

[0017] This utility model has a built-in air pump, which can blow air in time after the breathable membrane is installed on the back cover of the speaker to test whether the breathable membrane is installed securely. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a structural schematic diagram of the present invention.

[0021] In the picture:

[0022] 11. Machining table; 21. Boss; 22. Circular groove; 23. Ventilation groove; 24. Pressure rod; 25. Clamping cylinder; 26. Spring plate; 27. Air pump; 31. Inner groove of the table; 41. Lifting table; 42. Lifting cylinder. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1-3 According to an embodiment of the device for attaching a breathable membrane to the back cover of a speaker, the device includes a processing table 11, on which a positioning component for positioning the back cover of the speaker is provided, and a film attaching component for fixing the breathable membrane to the back cover of the speaker.

[0028] The positioning component includes a boss 21, and the upper side of the boss 21 is provided with a circular groove 22 for accommodating the speaker back cover. The circular groove 22 is consistent with the shape of the speaker back cover so that the speaker back cover will not shake or rotate after being placed in the circular groove 22, thereby avoiding the failure of subsequent film bonding assembly.

[0029] In addition, in order to enable the breathable membrane to be automatically tested after installation to avoid unstable fixation, the bottom surface of the circular groove 22 is provided with a downward-through breathable groove 23, and the processing table 11 is also provided with an air pump 27 connected to the breathable groove 23.

[0030] In a second embodiment of the device for applying a breathable membrane to a speaker back cover, in order to make the device adaptable to speaker back covers of different specifications, the boss 21 can be disassembled and replaced. The circular groove 22 and the venting groove 23 in different bosses 21 have different shapes, and the venting groove 23 must be aligned with the venting hole in the speaker back cover. The boss 21 is fixed to the upper side of the processing table 11 by screws for easy disassembly and assembly.

[0031] In addition, since the ventilation holes in the back covers of different speakers are distributed in different positions, the ventilation grooves 23 in the different bosses 21 are also in different positions. In order to enable the air pump 27 to be connected to each ventilation hole at the same time, the processing table 11 is provided with an inner groove 31. The inner groove 31 is covered by the bosses 21 and is connected to each ventilation groove 23. The air outlet in the air pump 27 is connected to the inner groove 31.

[0032] After the boss 21 is installed, the inner groove 31 can be connected to each of the ventilation grooves 23.

[0033] Furthermore, in order to prevent the air pump 27 from blowing away the horn cover in the circular groove 22 when it is working, a transverse groove is provided in the side of the circular groove 22, and a pressure rod 24 is slidably connected in the transverse groove. A clamping cylinder 25 is provided on the processing table 11, and the first piston rod in the clamping cylinder 25 is directly opposite the pressure rod 24.

[0034] In addition, a spring plate 26 is fixedly provided on the outside of the pressure rod 24, and the spring plate 26 is connected to the outer side of the boss 21 by a spring.

[0035] The pressing cylinder 25 can push the pressing rod 24 by controlling the first piston rod, so that the pressing rod 24 presses against the horn rear cover located in the circular groove 22. Then, if the air pump 27 works and the inner groove 31 is vented upward, air can be blown into the vent hole in the horn rear cover through the vent groove 23 to test whether the vent membrane is installed firmly.

[0036] After the test is completed, the first piston rod retracts to allow the staff to remove the horn back cover.

[0037] In this embodiment, the film-applying assembly includes a lifting platform 41 mounted on the processing table 11. The lower side of the lifting platform 41 is equipped with either a hot press or an ultrasonic welding machine, and the hot press head in the hot press or the welding head in the ultrasonic welding machine is directly opposite the vent hole in the rear cover of the speaker in the circular groove 22.

[0038] Furthermore, a support is provided on the processing table 11, and a lifting cylinder 42 is fixed on the support. The lifting platform 41 is fixed to the lower end of the second piston rod inside the lifting cylinder 42. Figure 3 and Figure 1 In this configuration, the piston rod inside the lifting cylinder 42 is misaligned with the slide rod inside the bracket, which is vertically installed and connected to the lifting platform 41.

[0039] The specific operating procedure is as follows:

[0040] First, the staff fixes the boss 21, which is adapted to the back cover of the speaker to be processed, onto the processing table 11 with screws. At this time, the inner groove 31 of the table is connected to the ventilation groove 23.

[0041] When it is necessary to install the breathable membrane, the worker places the horn membrane in the appropriate position inside the horn back cover in the circular groove 22. Then, the lifting platform 41 is lowered under the control of the lifting cylinder 42, and the breathable membrane is fixed inside the horn back cover by the hot pressing head or the welding head in the ultrasonic welding.

[0042] Afterwards, the lifting platform 41 rises and resets, and the pressing cylinder 25 controls the pressing rod 24 to press against the horn rear cover in the circular groove 22. Then, the air pump 27 works to blow air into the inner groove 31 of the platform. The air in the inner groove 31 will enter the vent hole in the horn rear cover through the vent groove 23 and surge upward to test the installation firmness of the vent membrane. If the vent membrane is not installed firmly, it will be blown away and observed by the staff for reinstallation.

[0043] It should be noted that air can leak through the gap between the horn back cover and the bottom of the circular groove 22. This leakage will not have a decisive impact on the test. A sealing ring can be provided on the upper side of the processing table 11 around the inner groove 31 to reduce air leakage. The horn back cover is inverted inside the circular groove 21, and the upper edge of the horn back cover is higher than the circular groove 22 to facilitate the worker's handling.

[0044] Furthermore, the inner tank 31 is equipped with a flow sensor. If the flow sensor detects an increase in flow while the air pump 27 maintains a constant power, it indicates that the breathable membrane installed in the horn back cover has detached, so that the horn back cover breathable membrane attaching device will automatically alarm. The installation and control logic of the flow sensor and alarm are existing technologies and will not be described in detail here.

[0045] Finally, if adhesive is provided inside the breathable membrane or the back cover of the speaker, the lower side of the lifting platform 41 can be equipped with only the pressure head, which can also achieve the purpose of installing the breathable membrane. The adhesive needs to be a quick-drying adhesive, and the interval between the resetting of the lifting platform 41 and the starting of the air pump 27 should be extended to avoid the phenomenon that the breathable membrane is unstable due to the adhesive not being cured.

[0046] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A device for applying a breathable film to a rear cover of a loudspeaker, comprising a processing table (11), characterized in that: The processing table (11) is equipped with a positioning component and a film application component; The positioning component is used to position the speaker back cover, and the positioning component includes a boss (21), and the upper side of the boss (21) is provided with a circular groove (22) for accommodating the speaker back cover. The bottom surface of the circular groove (22) is provided with a downward-through ventilation groove (23), and the processing table (11) is also provided with an air pump (27) connected to the ventilation groove (23). The film-attaching assembly is used to fix the breathable film to the horn back cover located in the circular groove (22).

2. A device for applying a breathable film to a rear cover of a loudspeaker according to claim 1, wherein: The boss (21) can be disassembled and replaced. The circular groove (22) and the ventilation groove (23) in different bosses (21) have different shapes. The boss (21) is fixed on the upper side of the processing table (11) by screws.

3. The device for attaching a breathable membrane to the back cover of a speaker according to claim 2, characterized in that: The processing table (11) is provided with an inner groove (31), which is covered by the boss (21) and is connected to each of the ventilation grooves (23). The air outlet of the air pump (27) is connected to the bottom surface of the inner groove (31).

4. The device for attaching a breathable membrane to the back cover of a speaker according to claim 1, characterized in that: A transverse groove is provided on the side of the circular groove (22), and a pressure rod (24) is slidably connected in the transverse groove. A clamping cylinder (25) is provided on the processing table (11), and the first piston rod in the clamping cylinder (25) is directly opposite the pressure rod (24).

5. The device for attaching a breathable membrane to the back cover of a speaker according to claim 4, characterized in that: A spring plate (26) is fixedly provided on the outside of the pressure rod (24), and the spring plate (26) is connected to the outer side of the boss (21) by a spring.

6. The device for attaching a breathable membrane to the back cover of a speaker according to claim 1, characterized in that: The film-applying assembly includes a lifting platform (41) mounted on the processing table (11). The lower side of the lifting platform (41) is equipped with either a hot press or an ultrasonic welding machine, and the hot press head in the hot press or the welding head in the ultrasonic welding machine is directly opposite the vent hole in the horn back cover in the circular groove (22).

7. The device for attaching a breathable membrane to the back cover of a speaker according to claim 6, characterized in that: The processing table (11) is provided with a bracket, and a lifting cylinder (42) is fixed on the bracket. The lifting platform (41) is fixed to the lower end of the second piston rod inside the lifting cylinder (42), and the lifting platform (41) is slidably connected to the bracket.

8. The device for attaching a breathable membrane to the back cover of a speaker according to claim 3, characterized in that: The inner tank (31) is equipped with a flow sensor.

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