Loudspeaker pad cotton pasting tool

Abstract

The invention discloses a loudspeaker pad cotton pasting tool, and the tool comprises a rotating disc which is used for bearing and driving a loudspeaker to coaxially rotate; the positioning jig is coaxially arranged above the turntable, the transverse section of the positioning jig is circular, the positioning jig can move up and down, and the positioning jig is used for covering the loudspeaker but exposing an annular pad cotton pasting area of the loudspeaker; the flange jig is arranged on one side above the turntable, and a gap for limiting cushion cotton is formed between the flange jig and the positioning jig; when pad cotton pasting operation is carried out, the positioning jig moves downwards to be close to the loudspeaker, and the pad cotton is attached to an annular pad cotton pasting area of the loudspeaker in a surrounding mode along with rotation of the loudspeaker under common limiting of the positioning jig and the flange jig. According to the loudspeaker pad cotton pasting tool, automatic pad cotton pasting can be achieved, and the automation level is improved; the cotton cushion can be guaranteed not to deviate and incline, poor performance and poor appearance can be avoided, consistency is improved, and high quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of tooling fixtures for loudspeakers, and in particular to a tooling fixture for loudspeaker padding. Background Art

[0002] Speakers, also known as horns, are common electroacoustic transducer devices that are often used in a variety of products in a variety of fields. At present, automotive speakers usually require a circle of padding on the front of the speaker. The materials of the padding include but are not limited to EVA (polyolefin), rubber, foam, sponge, pearl cotton, silicone, etc. The padding can have its own adhesive backing and can be directly adhered to the front edge of the speaker. This process is more efficient. The padding also began to not have adhesive backing, but instead adopted a glue injection process. After the glue is injected on the front edge of the speaker, the padding is attached and then cured (the curing time is generally more than several hours). The operating efficiency of this process is low, and the moving product cannot be touched during the curing process.

[0003] Since the material of the padding is relatively soft and the area on the speaker for adhering the padding is very small, it is difficult to attach the padding using tooling equipment. Especially when the padding has an adhesive backing, it can only be attached by hand. However, there are the following defects in manually attaching the padding: First, it is difficult to accurately position it, and the padding is prone to offset when affixing, resulting in poor performance and / or appearance, and poor consistency; second, the operating efficiency is very low, the labor cost is very high, and the product manufacturing cost is high. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a loudspeaker pad cotton tooling.

[0005] A speaker padding tooling of the present application includes: a turntable, used to carry and drive the speaker to rotate coaxially; a positioning jig, coaxially arranged above the turntable, with a circular transverse cross-sectional shape and capable of moving up and down, used to cover the speaker but expose the annular padding area of ​​the speaker; a side guard jig, arranged on one side above the turntable, forming a gap between the positioning jig and the positioning jig for limiting the padding; when performing the padding operation, the positioning jig moves downward to approach the speaker, and the padding is jointly limited by the positioning jig and the side guard jig, and surrounds and is attached to the annular padding area of ​​the speaker as the speaker rotates.

[0006] In some optional embodiments, the speaker includes a bracket, a paper cone and an R-ring, a step is provided on the inner side of the outer edge of the bracket, the R-ring includes an inner edge portion for bonding to the paper cone, an outer edge portion for bonding to the step, and an arc portion located between the inner edge portion and the outer edge portion; the area where the outer edge portion is located is the annular padding cotton area; in the top view direction, the positioning jig covers the paper cone and the inner edge and arc portion of the R-ring, exposing the outer edge portion of the R-ring.

[0007] In some optional embodiments, the outer diameter of the positioning fixture is equal to or slightly larger than the outer diameter of the arc portion of the R-ring.

[0008] In some optional embodiments, a recessed portion for avoiding the R-ring is formed at the bottom of the positioning fixture.

[0009] In some optional embodiments, a side edge of the positioning fixture is provided with a notch communicating with the recessed portion.

[0010] In some optional embodiments, the interior of the positioning fixture is hollow.

[0011] In some optional embodiments, the end of the retaining edge jig facing the positioning jig is in an arc shape.

[0012] In some optional embodiments, a circular rotating member is provided at the end of the edge retaining fixture facing the positioning fixture.

[0013] In some optional embodiments, the speaker padding tool further includes a pressing piece, which is used to apply a downward pressure to the padding during the padding operation, and the pressing piece is independently arranged from the edge retaining fixture, or the pressing piece is arranged on the edge retaining fixture.

[0014] In some optional embodiments, the speaker pad cotton tooling also includes: a machine plate, used to carry the turntable and the edge retaining fixture; a motor, arranged on the machine plate, connected to the turntable through a transmission component, and used to drive the turntable to rotate; a lifting mechanism, including a mounting frame arranged on the machine plate and a cylinder fixed on the mounting frame, the cylinder being used to connect the positioning fixture and drive the positioning fixture to move up and down; an electrical control box, arranged on the machine plate, used to control the motor and the cylinder.

[0015] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0016] The loudspeaker cotton padding tooling of the present application limits the cotton padding together through a positioning jig and a side guard jig, and drives the speaker to rotate by a turntable, so that the cotton padding can be automatically attached, reducing manual positioning and other actions, thereby improving the level of automation; due to the limiting effect of the positioning jig and the side guard jig, it can be ensured that the cotton padding does not shift or skew, which can avoid poor performance and appearance, improve consistency, and ensure high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments and the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the loudspeaker pad cotton tooling of an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a partial structure of a speaker according to an embodiment of the present application;

[0020] Figure 3 It is a partial structural schematic diagram of the speaker pad cotton tooling according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0023] The following describes the embodiments in detail.

[0024] refer to Figure 1The present application proposes a speaker padding tool for attaching padding to a speaker.

[0025] like Figure 1 As shown, the speaker padding tooling of the present application includes: a turntable 01, a positioning jig 02 and a retaining edge jig 03. Among them, the turntable 01 is used to carry the speaker 04 and can drive the speaker 04 to rotate coaxially. The positioning jig 02 is coaxially arranged above the turntable 01, and the transverse cross-section is circular. It can move up and down, and can move downward to be close to the speaker 04, and is used to cover the speaker 04 but expose the annular padding area of ​​the speaker 04. The retaining edge jig 03 is arranged on one side above the turntable 01, and a gap is formed between the positioning jig 02 and the positioning jig 02, which is equivalent to the width of the padding 05 and is used to limit the padding 05. When the padding operation is performed, the positioning jig 02 moves downward to be close to the speaker 04, and the long strip of padding 05 is attached to the annular padding area of ​​the speaker 04 under the common limitation of the positioning jig 02 and the retaining edge jig as the speaker 04 rotates.

[0026] refer to Figure 2 In some optional embodiments, the speaker 04 may include a magnetic system, a vibration system, and a bracket 041 for carrying the magnetic system and the vibration system. The vibration system may include a paper cone 042, an R ring 043, and a voice coil (not shown in the figure), etc., wherein a circle of steps 0412 may be provided on the inner side of the outer edge 0411 of the bracket 041, and the R ring 043 may include an inner edge 0431 for bonding to the paper cone 042, an outer edge 0433 for bonding to the step 0412 on the inner side of the outer edge of the bracket 041, and an arc portion 0432 located between the inner edge 0431 and the outer edge 0433. The annular padding area mentioned above may refer to the area where the outer edge 0432 of the R ring 043 is located, that is, the padding 05 will be attached to the outer edge 0432 of the R ring 043 and located between the arc portion of the R ring 043 and the outer edge 0411 of the bracket 041. In the top view, the positioning fixture 02 can cover the inner edge and arc portion of the paper cone 042 and the R-ring 043, while exposing the outer edge of the R-ring 043 to facilitate the attachment of the padding 05 on the outer edge.

[0027] When attaching the pad 05, one end of the pad 05 can be attached to the front of the speaker 04, and then the turntable 01 is started to drive the speaker 04 to rotate one circle, so that a circle of pad 05 is attached to the front of the speaker 04. In this process, if the pad 05 is not limited, the pad 05 is easily offset, so that the pad 05 is attached to the arc portion 0432 of the R ring 043 or offset to the outside of the bracket 041, resulting in poor appearance and performance.

[0028] In the embodiment of the present application, by providing a positioning jig 02, the padding cotton 05 can only be attached around the outside of the positioning jig 02. Since the positioning jig 02 covers the paper basin 042 and the arc portion 0432 of the R-ring 043, the padding cotton 05 cannot shift inward and will not be attached to the arc portion 0432 of the R-ring 043. In addition, by providing a side retaining jig 03, the padding cotton 05 is limited on the inside of the side retaining jig 03, so that the padding cotton 05 cannot shift outward and will not shift to the outer edge 0411 of the bracket 041. In this way, automatic sticking of the padding cotton 05 is achieved, manual positioning and other actions are reduced, and the level of automation is improved. It is ensured that the padding cotton 05 does not shift or skew, poor performance and appearance are avoided, consistency is improved, and high quality is ensured.

[0029] In some optional embodiments, the bottom surface of the padding 05 has adhesive backing.

[0030] In some optional embodiments, such as Figure 1 As shown, the turntable 01 may be provided with avoidance holes so as to avoid partial structures of the speaker 04 when the speaker 04 is fixed, for example, avoid its voice coil (for the speaker 04 that has not yet been connected to the magnetic system), or avoid its magnetic system.

[0031] In some optional embodiments, the positioning jig 02 is a cylinder, and the outer diameter of the positioning jig 02 is equal to or slightly larger than the outer diameter of the arc portion 0432 of the R ring 043. In this way, the positioning jig 02 can cover the front of the speaker 04, and only the annular padding area (i.e., the outer edge 0433 of the R ring 043) on the front of the speaker 04 is exposed for attaching the pad 05.

[0032] In some optional embodiments, the outer diameter of the positioning jig 02 is smaller than the diameter of the outer edge 0411 of the bracket 041 of the speaker 04, and an area for attaching the pad 05 is defined between the positioning jig 02 and the outer edge 0411 of the bracket 041. From a top view, the area is an annular area. The width of the annular area is substantially equal to or slightly larger than the width of the pad 05.

[0033] In some optional embodiments, a recessed portion 021 is formed at the bottom of the positioning jig 02 for avoiding the R-ring 043. When the positioning jig 02 is lowered to be close to the speaker 04, the R-ring 043 can fall into the recessed portion 021. In this way, the positioning jig 02 is closer to the speaker 04, and the padding 05 is better limited.

[0034] In some optional embodiments, a notch 022 communicating with the recessed portion 021 is provided on the side of the positioning fixture 02. The notch 022 can be used to discharge the air inside the positioning fixture 02 when it descends.

[0035] In some optional embodiments, the interior of the positioning fixture 02 is hollow. The hollow interior can reduce the weight of the fixture 02, reduce costs, and facilitate manufacturing. Exemplarily, the positioning fixture 02 can be a cylinder with an opening facing downward.

[0036] In some optional embodiments, the positioning fixture 02 may be made of plastic, metal, or other materials.

[0037] In some optional embodiments, the end of the edge retaining fixture 03 facing the positioning fixture 02 is in an arc shape. Since the end contacts the padding 05, the arc shape can avoid damaging the padding 05.

[0038] In some optional embodiments, a circular rotating member (such as a bearing) may be provided at the end of the retaining fixture 03 facing the positioning fixture 02, so that when the padding cotton 05 is transmitted / advanced, the circular rotating member rotates accordingly, thereby further avoiding damage to the padding cotton 05.

[0039] In some optional embodiments, the height of the positioning jig 02 is higher than that of the edge jig 03 .

[0040] In some optional embodiments, the edge retaining fixture 03 may include a vertical member and a horizontal member detachably connected to the vertical member, and the end of the horizontal member faces the positioning fixture 02 to limit the pad 05.

[0041] refer to Figure 3 In some optional implementations, the loudspeaker padding tooling of the embodiment of the present application may further include a pressing piece 031, which is used to apply a downward pressure to the padding 05 during the padding operation, so that the padding is firmly adhered to the loudspeaker 04. Optionally, the pressing piece 031 may be provided independently of the side guard fixture 03. Alternatively, the pressing piece 031 may also be provided on the side guard fixture 03, for example, a protruding tongue is provided above the end of the side guard fixture 03 as the pressing piece 031, that is, the pressing piece 031 and the side guard fixture 03 may be integrally formed.

[0042] refer to Figure 1 The loudspeaker padding cotton tooling of the embodiment of the present application may also include: a machine plate 06, a motor 07, a lifting mechanism 08 and an electrical control box 09;

[0043] Among them, the machine plate 06 is used to carry the turntable 01, the edge fixture 03, the motor 07, the lifting mechanism 08 and the electrical control box 09. The motor 07 is arranged on the machine plate 06, connected to the turntable 01 through a transmission component (such as a belt or chain), and is used to drive the turntable 01 to rotate. The lifting mechanism 08 includes a mounting frame 081 arranged on the machine plate 06 and a cylinder 082 fixed on the mounting frame 081. The cylinder 082 is used to connect the positioning fixture 02 and drive the positioning fixture 02 to move up and down; the electrical control box 09 is arranged on the machine plate 06, and is used to control the motor 07 and the cylinder 082.

[0044] In some optional embodiments, the vertical piece of the edge retaining fixture 03 is fixedly connected to the machine plate 06 .

[0045] In some optional embodiments, the main body of the motor 07 is arranged above the machine plate 06, and the rotating shaft of the motor 07 extends below the machine plate 06. The rotating shaft can be connected to the part of the turntable 01 extending below the machine plate 06 through a transmission component, thereby driving the turntable 01 to rotate. Optionally, the motor 07 can be a high-precision servo motor.

[0046] In some optional embodiments, the mounting frame 081 of the lifting mechanism may include a vertical axis, a sliding block connected to the vertical axis and capable of sliding up and down relative to the vertical axis, and a mounting plate connected to the sliding block. The cylinder 082 may be mounted downward on the mounting plate, the cylinder shaft passes through the mounting plate, the lower end of the cylinder shaft may be connected to a fixed plate, and the positioning fixture 02 may be fixedly connected to the fixed plate. Optionally, the fixed plate may be slidably connected to the mounting plate via a guide shaft to ensure that the fixed plate only moves up and down in the vertical direction following the cylinder shaft without left and right deviation. Optionally, a fixed block located below the sliding block is also provided on the vertical axis, and the sliding block may be connected to the fixed block via a lead screw. The vertical height of the sliding block may be adjusted by rotating the lead screw, thereby adjusting the initial height of the positioning fixture 02.

[0047] In some optional embodiments, a switch for controlling the motor 07 and a solenoid valve for controlling the cylinder 082 are provided in the electrical control box 09 .

[0048] As described above, the embodiment of the present application proposes a speaker pad cotton tooling, and its working principle includes:

[0049] 1. The motor 07 drives the turntable 01 to rotate the speaker 04, and the positioning fixture 02 presses down to cover and limit the speaker 05, exposing only the annular padding area of ​​the speaker 05, thereby preventing the padding 05 from shifting inward during the attachment process and sticking to the arc portion 0432 of the R ring 043;

[0050] 2. The padding 05 is limited by the side retaining fixture 03 to prevent the padding 05 from shifting outward during the attachment process;

[0051] 3. The pad 05 relies on the downward pressure of the downward pressing member 031 to achieve good adhesion, ensuring that the pad 05 bears a certain downward pressure and is firmly attached to the speaker 04;

[0052] 4. Ensure that the initial placement of the pad 05 is correct. The turntable 01 rotates clockwise (or counterclockwise), and the operator pulls the pad 05 counterclockwise (or clockwise) to quickly attach it;

[0053] 5. After the attachment is completed, you can choose to press and adjust the padding 05 and then start the next process.

[0054] The advantages of the loudspeaker pad cotton tooling of the embodiment of the present application include but are not limited to:

[0055] The loudspeaker cotton padding tooling of the present application has the functions of cotton pad positioning and automatic rotation of the speaker driven by a turntable. It can also fix the attachment by pressing down on the cotton pad and realize the automatic cotton padding effect, which can reduce key actions such as manual positioning and improve the cotton padding effect, especially when the cotton pad is made of soft materials such as foam, and the attachment position is small, and the cotton pad has its own adhesive backing, the pasting operation can be carried out better and more efficiently.

[0056] The loudspeaker cotton-attaching tooling of the present application can realize the rapid and precise attachment of the cotton pad to the loudspeaker, so that the loudspeaker has better shock absorption during assembly, reduces the offset and skew of attachment caused by manual attachment or lack of positioning tooling on the market, greatly reduces poor appearance, rework costs, etc.; furthermore, most importantly, when initially designing the product, there is no need to worry about the distance between the edge of the bracket and the arc portion of the R ring. As long as the distance is slightly larger than the width of the cotton pad and there is a certain position, the cotton pad can be placed within the attachment limit, and the use of this tooling can meet the process production; at the same time, because the distance between the edge of the bracket and the arc portion of the R ring is small, it is easy for fingers to touch it during conventional manual insertion and attachment, which greatly increases the difficulty of attachment. Therefore, this cotton-attaching tooling relies on a jig for positioning during the entire attachment process, which can solve this problem.

[0057] In addition, when the speaker is placed on the T-iron positioning fixture, the upper mold fixture is pressed down, and the upper mold fixture can effectively avoid the paper basin R ring. The personnel put the padding cotton into the attachment limit to play a role in positioning, protection, and reducing defects. Moreover, compared with the conventional process, the products attached by the cotton sticking tooling have uniform appearance consistency and the strength of cotton sticking, which greatly improves the quality stability of the product, greatly reduces the production cycle, and effectively improves the yield. After the tooling is introduced, it is calculated at 600pcs / H, and after testing, it can reach 9s cycle, which only requires 2 people on the line to pad cotton.

[0058] During the production process, the present application greatly reduces the production process rhythm, and achieves 9 seconds to attach a speaker front pad, compared with 35 seconds for conventional manual foam attachment, and the production efficiency is increased by 400%. At the same time, soft foam with adhesive backing can be attached with high efficiency, breaking through the industry's problem of slow efficiency in attaching pads. Semi-automatic tooling is used instead of manual methods, which improves product quality stability while greatly improving production efficiency and realizing lean production.

[0059] In the above, the technical solution of the present application is described in detail through specific embodiments. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0060] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. A person skilled in the art may modify the technical solutions described in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A loudspeaker pad cotton tooling, characterized in that: include: A turntable, used to carry and drive the loudspeaker to rotate coaxially; A positioning jig is coaxially arranged above the turntable, has a circular cross-sectional shape, and can be moved up and down, and is used to cover the speaker but expose the annular pad cotton area of ​​the speaker; A side retaining fixture is arranged on one side above the rotating disk, and a gap for limiting the padding is formed between the side retaining fixture and the positioning fixture; When the padding operation is performed, the positioning jig moves downward to be close to the speaker, and the padding cotton surrounds the annular padding cotton area attached to the speaker as the speaker rotates under the common limitation of the positioning jig and the retaining edge jig.

2. The loudspeaker padding cotton tooling according to claim 1, characterized in that: The speaker includes a bracket, a paper cone and an R-ring. A step is provided on the inner side of the outer edge of the bracket. The R-ring includes an inner edge portion for bonding to the paper cone, an outer edge portion for bonding to the step, and an arc portion located between the inner edge portion and the outer edge portion. The area where the outer edge portion is located is the annular padding cotton area. In the top view direction, the positioning jig covers the paper cone and the inner edge and arc portion of the R-ring, exposing the outer edge portion of the R-ring.

3. The loudspeaker padding cotton tooling according to claim 2, characterized in that: The outer diameter of the positioning fixture is equal to or slightly larger than the outer diameter of the arc portion of the R ring.

4. The loudspeaker padding cotton tooling according to claim 3, characterized in that: A recessed portion for avoiding the R ring is formed at the bottom of the positioning fixture.

5. The loudspeaker padding cotton tooling according to claim 4, characterized in that: A notch communicating with the recessed portion is provided on the side of the positioning fixture.

6. The loudspeaker padding cotton tooling according to claim 4, characterized in that: The interior of the positioning fixture is hollow.

7. The loudspeaker padding tooling according to claim 1, characterized in that: The end of the retaining edge fixture facing the positioning fixture is in an arc shape.

8. The loudspeaker padding tooling according to claim 1, characterized in that: The end of the edge retaining fixture facing the positioning fixture is provided with a circular rotating part.

9. The loudspeaker padding cotton tooling according to claim 1, characterized in that: It also includes a pressing piece, which is used to apply a downward pressure to the padding when applying the padding. The pressing piece is independently arranged from the edge retaining fixture, or the pressing piece is arranged on the edge retaining fixture.

10. The loudspeaker padding tooling according to any one of claims 1 to 9, characterized in that: Also includes: A machine plate, used for carrying the turntable and the edge retaining fixture; A motor, disposed on the machine plate, connected to the turntable through a transmission component, and used to drive the turntable to rotate; A lifting mechanism, comprising a mounting frame arranged on the machine plate and a cylinder fixed on the mounting frame, wherein the cylinder is used to connect the positioning fixture and drive the positioning fixture to move up and down; An electrical control box is arranged on the machine plate and is used for controlling the motor and the cylinder.

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