Loudspeaker pneumatic guide rail type wire adjustment fixture and method

Abstract

The present application discloses a speaker pneumatic guide rail type wire adjustment jig and method, which is used for adjusting the curvature of the silk thread in the speaker assembly. The jig includes: a jig body, a placement table, a wire adjustment mechanism and a pneumatic mechanism; wherein the jig body has an upper surface; the placement table is protrudingly arranged on the upper surface of the jig body, and is used to place the speaker assembly; the wire adjustment mechanism includes a curvature anti-drop pin and a guide rail groove adjacently arranged on the placement table, and a width stretching pin located in the guide rail groove, the width stretching pin can move in the guide rail groove under the drive of the pneumatic mechanism, and a gap for accommodating the silk thread is formed between the width stretching pin and the curvature anti-drop pin, and the width stretching pin is used to push the silk thread in the direction of the curvature anti-drop pin to form a curvature of the silk thread; the pneumatic mechanism is connected to the width stretching pin, and is used to provide power to drive the width stretching pin to move in the guide rail groove. The jig of the present application is more integrated, and the consistency of adjusting the curvature of the lead wire is better and the efficiency is higher.

Description

Technical Field

[0001] The present application belongs to the technical field of loudspeaker tooling and fixtures, and relates to tooling and fixtures for loudspeaker line adjustment, and specifically to a loudspeaker pneumatic guide rail type line adjustment fixture and method. Background Art

[0002] A loudspeaker is a transducer device that converts electrical signals into sound signals. The speaker uses electromagnetic, piezoelectric or electrostatic effects to make its cone vibrate and resonate with the surrounding air to produce sound. The speaker can be installed in home TVs, multimedia home audio, outdoor audio, cars, KTV venues, square broadcasts, computers, etc., as a sound unit.

[0003] Most speakers use leads to transmit signals, and usually use silk thread as the lead. When the speaker is working, the vibration of the voice coil will drive the silk thread to vibrate. In order to avoid problems such as wire hitting (the silk thread hits the paper cone), it is necessary to design a tooling fixture to adjust the silk thread during the speaker assembly process, that is, adjust the curvature of the silk thread to reserve a certain length.

[0004] At present, the wire adjustment and positioning tooling used in the industry is usually mainly in the form of inserting rods and inserting pieces. The wire adjustment process includes: inserting the wire adjustment jig into the speaker, manually pulling the wire to form an arc, and then soldering the wire to the terminal board of the speaker. The main disadvantage is that when designing the jig, the interference between the speaker basin frame is taken into consideration, so the wire adjustment jig is generally smaller than the speaker basin frame (too large clearance fit) to be placed in the basin frame for wire adjustment, which causes the jig to be pulled off-center during manual placement and wire pulling.

[0005] 1. During the wire adjustment process, due to the gap fit, the fixture is prone to loosening, resulting in the lead becoming longer, resulting in poor wire bonding (poor sound quality);

[0006] 2. In the conventional speaker production process, the lead wire is almost always adjusted after the paper cone is installed. This method cannot visually inspect the curvature of the speaker lead wire. At the same time, when the lead wire adjustment consistency is insufficient, it may also cause poor wiring. Summary of the invention

[0007] The main technical problem solved by the present application is to provide a loudspeaker pneumatic guide rail wire adjustment fixture and method for adjusting the curvature of the loudspeaker's silk wire to meet the sound quality performance requirements of the loudspeaker.

[0008] In the first aspect, the present application proposes a loudspeaker pneumatic guide rail type wire adjustment fixture, which is used for adjusting the curvature of the silk wire in the loudspeaker assembly, comprising: a fixture body, a placement table, a wire adjustment mechanism and a pneumatic mechanism; wherein,

[0009] The fixture body has an upper surface;

[0010] The placing table is protrudingly arranged on the upper surface of the fixture body and is used to place a speaker assembly; the speaker assembly includes a basin frame, a voice coil and a silk thread, but does not include a paper basin and a magnetic system;

[0011] The wire adjustment mechanism comprises an arc anti-drop pin and a guide rail groove adjacently arranged on the placement table and a width stretching pin located in the guide rail groove, wherein the width stretching pin can move in the guide rail groove under the drive of the pneumatic mechanism, and a gap for accommodating the silk thread is formed between the width stretching pin and the arc anti-drop pin, and the width stretching pin is used to push the silk thread toward the direction of the arc anti-drop pin to form an arc on the silk thread;

[0012] The pneumatic mechanism is connected to the width stretching pin and is used to provide power to drive the width stretching pin to move in the guide rail groove.

[0013] In some optional embodiments, the placement platform is a circular boss, so that the basin frame of the speaker assembly can be mounted on the circular boss.

[0014] In some optional embodiments, a void hole is provided at the center of the placement table.

[0015] In some optional embodiments, the upper surface of the jig body is an inclined surface, and the upper surface of the placement table is parallel to the upper surface of the jig body.

[0016] In some optional embodiments, the pneumatic mechanism can drive the width stretching pin to move between an initial position and a line adjustment position, and the line adjustment position is closer to the arc anti-slip pin relative to the initial position.

[0017] In some optional embodiments, there are two wire adjustment mechanisms, which are arranged side by side on the placement table and are used to adjust the curvature of the two silk threads of the speaker assembly respectively.

[0018] In some optional embodiments, the pneumatic mechanism includes a cylinder and a mounting bracket for fixing the cylinder to the fixture body, and a piston rod of the cylinder is connected to the width stretching pin.

[0019] In some optional embodiments, the jig body has a cylinder mounting hole for accommodating the cylinder, and the guide rail groove is connected to the cylinder mounting hole.

[0020] In some optional embodiments, it also includes: a foot switch for controlling the pneumatic mechanism.

[0021] In a second aspect, the present application provides a speaker line adjustment method, which is used for the speaker pneumatic guide rail line adjustment fixture as described in the first aspect, and the method comprises:

[0022] Place the speaker assembly face down on the placement table of the speaker pneumatic guide rail type wire adjustment fixture, so that the placement table is inserted into the opening of the speaker assembly basin frame, and the silk thread of the speaker assembly falls between the width stretching pin and the arc anti-drop pin of the wire adjustment mechanism of the speaker pneumatic guide rail type wire adjustment fixture;

[0023] Controlling the operation of the pneumatic mechanism of the loudspeaker pneumatic guide rail type wire adjustment fixture, so that the width stretching pin pushes the brocade wire from the initial position toward the direction of the arc anti-drop pin to form an arc on the brocade wire;

[0024] After the welding of the brocade wire and the terminal board of the speaker assembly is completed, the pneumatic mechanism is controlled to restore the width stretching pin to an initial position.

[0025] As mentioned above, the present application proposes a pneumatic guide rail type wire adjustment fixture for loudspeakers, and also proposes a corresponding method. The fixture of the present application adopts pneumatic drive + positioning column to realize the curvature adjustment of the silk thread. The wire adjustment mechanism of the fixture includes adjacently arranged curvature anti-slip pins and guide rail grooves and width stretching pins located in the guide rail grooves, wherein the curvature anti-slip pins are fixed position positioning columns, and the width stretching pins are movable positioning columns driven by a pneumatic mechanism. By adopting the above features, the technical effects achieved by the present application include but are not limited to:

[0026] 1. The fixture of the present application uses a placement table to fix the speaker assembly, and uses a pneumatic drive + positioning column method to adjust the line. Compared with the rod and sheet insertion method, the fixture will not loosen, causing the lead to become longer and causing poor wiring. It also reduces manual work and has a higher efficiency in adjusting the line.

[0027] 2. The jig of the present application, when driven by a pneumatic mechanism, has a certain stroke of the width stretching pin and a fixed distance of springing outward, so the curvature of the adjusted lead is also consistent. Compared with the manual rod / piece insertion method, the production process is more advanced and the consistency of the wire adjustment curvature can be improved.

[0028] 3. The jig of the present application can be used to adjust the wires of the speaker assembly before the paper cone is installed. The curvature of the lead wire can be adjusted to a satisfactory state before the paper cone is installed. In this process, there is no paper cone to block, and the lead wire can be visually observed to see if it is in a bad state.

[0029] 4. Optionally, the operator can use a foot switch to control the width stretching pin without the need to use hands to operate, thus reducing the waste of motion and further improving work efficiency.

[0030] In summary, the jig of the present application is more integrated, has better consistency in adjusting the curvature of the lead, is more efficient than traditional processes, can be visually inspected, and has more stable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 It is a three-dimensional diagram of a loudspeaker pneumatic guide rail type line adjustment fixture according to an embodiment of the present application;

[0033] Figure 2 It is a top view of a pneumatic guide rail type line adjustment fixture for a loudspeaker according to an embodiment of the present application;

[0034] Figure 3 It is a side view of a pneumatic guide rail type line adjustment fixture for a loudspeaker according to an embodiment of the present application;

[0035] Figure 4 It is a front view of a pneumatic guide rail type line adjustment fixture for a loudspeaker according to an embodiment of the present application;

[0036] Figure 5 This is a top view of a speaker pneumatic guide rail type line adjustment fixture with a speaker assembly placed thereon according to an embodiment of the present application;

[0037] Figure 6 This is a side view of a speaker pneumatic guide rail type line adjustment fixture according to an embodiment of the present application, in which a speaker assembly has been placed;

[0038] Figure 7 This is a front view of a speaker pneumatic guide rail type line adjustment fixture according to an embodiment of the present application, in which a speaker assembly has been placed. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] The following describes the embodiments in detail.

[0042] refer to Figures 1 to 7 The present application provides a pneumatic guide rail type wire adjustment fixture for a loudspeaker, which is used to adjust the curvature of a silk wire in a loudspeaker assembly. Figures 1 to 7 As shown, the fixture of the present application includes: a fixture body 10, a placement table 20, a line adjustment mechanism 30 and a pneumatic mechanism 40; wherein,

[0043] The fixture body 10 has an upper surface 11;

[0044] The placing table 20 is protrudingly provided on the upper surface 11 of the fixture body 10 and is used to place the speaker assembly 50; the speaker assembly 50 includes a basin frame, a voice coil and a silk thread, but does not include a paper basin and a magnetic system;

[0045] The wire adjustment mechanism 30 includes an arc anti-drop pin 31 and a guide groove 32 adjacently arranged on the placement table, and a width stretching pin 33 located in the guide groove 32. The width stretching pin 33 can move in the guide groove 32 under the drive of the pneumatic mechanism 40. A gap for accommodating the silk thread is formed between the width stretching pin 33 and the arc anti-drop pin 31. The width stretching pin 33 is used to push the silk thread toward the arc anti-drop pin 31 to form an arc on the silk thread.

[0046] The pneumatic mechanism 40 is connected to the width stretching pin 33 and is used to provide power to drive the width stretching pin 33 to move in the guide rail groove 32 .

[0047] In some optional embodiments, the placement platform 20 is a circular boss, so that the basin frame of the speaker assembly 50 can be placed on the circular boss. Optionally, the speaker assembly 50 can be placed face down, so that the opening of the basin frame is placed on the placement platform 20, and the inner diameter of the opening of the basin frame is comparable (matched) to the diameter of the placement platform 20, so that the placement platform 20 is used to place and fix the speaker assembly 50.

[0048] In some optional embodiments, a clearance hole 21, such as a circular recessed hole or a through hole, is provided at the center of the placement platform 20 so that when the speaker assembly 50 is placed thereon, components or jigs of the speaker assembly 50, such as a clearance voice coil gauge, can be avoided.

[0049] In some optional embodiments, the upper surface 11 of the fixture body 10 is an inclined surface, and the upper surface of the placement table 20 is parallel to the upper surface 11 of the fixture body 10. The inclined setting can facilitate operation and fixation of the speaker assembly 50.

[0050] In some optional embodiments, the pneumatic mechanism 40 can drive the width stretching pin 33 to move between the initial position and the line adjustment position, and the line adjustment position is closer to the arc anti-dropping pin 31 relative to the initial position.

[0051] In some optional embodiments, there are two wire adjustment mechanisms 30, which are arranged side by side on the placement table 20, and are respectively used to adjust the curvature of the two silk wires (one positive and one negative) of the speaker assembly 50. When the width stretching pins 33 of the two wire adjustment mechanisms 30 are in the initial position, the two width stretching pins 33 are close to each other, and when the width stretching pins 33 move toward the wire adjustment position, the two width stretching pins 33 move away from each other. Two curvature anti-drop pins 31 are located on the outside, sandwiching the two width stretching pins 33 in the middle.

[0052] In some optional embodiments, the pneumatic mechanism 40 includes a cylinder 41 and a mounting bracket 42 for fixing the cylinder 41 to the fixture body 10, and the piston rod of the cylinder 41 is connected to the width stretching pin 33. The pneumatic mechanism 40 may have two, which are respectively arranged on both sides of the fixture body 10 to control the width stretching pins 33 of the two line adjustment mechanisms 30.

[0053] In some optional embodiments, the fixture body 10 has a cylinder mounting hole for accommodating the cylinder 41, and the guide groove 32 is connected to the cylinder mounting hole, so that the bottom of the width stretching pin 33 can extend into the cylinder mounting hole and connect with the piston rod of the cylinder 41.

[0054] In some optional embodiments, the jig of the present application further includes: a foot switch for controlling the pneumatic mechanism 40. After the speaker assembly 50 is placed in place, the operator can step on the foot switch to control the cylinder 41 of the pneumatic mechanism 40 to work, driving the width stretching pin 33 to move to the line adjustment position on the side of the arc anti-drop pin 31. Optionally, after the operator's foot leaves the foot switch, the cylinder 41 can stop working and drive the width stretching pin 33 back to the initial position.

[0055] In the jig of the embodiment of the present application, a placement table 20 is provided on the jig body 10 for fixing the speaker assembly 50, and two positioning columns (or positioning pins, i.e., a fixed arc anti-drop pin 31 and a width stretching pin 33 movable in the guide groove 32) are provided on the placement table 20 for adjusting the line, and the width stretching pin 33 is driven by a pneumatic mechanism 40, and moves outward and pops open under the drive of the pneumatic mechanism 40 to achieve line adjustment. Due to the consistency of the moving distance of the width stretching pin 33, the consistency of the line adjustment arc can be guaranteed.

[0056] The working principle of the embodiment of the present application is as follows: a semi-finished speaker assembly 50 without adjustment and without a paper basin is placed on the placement table 20, and the operator steps on the foot switch, and compressed air enters the cylinder 41. Under the action of the compressed air, the cylinder 41 drives the width stretching pin 33 to bounce to both sides. At this time, the silk thread of the speaker is clamped between the arc anti-drop pin 31 and the width stretching pin 33. The operator tightens the silk thread to form an arc, and then solders the silk thread to the terminal board of the speaker basin frame. After the tin liquid solidifies, the operator releases the foot switch, the width stretching pin 33 is reset, and the adjusted speaker assembly 50 is taken out and put into the next process.

[0057] The present application also provides a speaker line adjustment method for the speaker pneumatic guide rail line adjustment fixture as described above. The method may include the following steps:

[0058] S1, place the speaker assembly 50 face downward on the placement table 20 of the speaker pneumatic guide rail type wire adjustment fixture, so that the placement table 20 is inserted into the basin opening of the speaker assembly 50, so that the silk thread of the speaker assembly falls between the width stretching pin 33 and the arc anti-drop pin 31 of the wire adjustment mechanism 30 of the speaker pneumatic guide rail type wire adjustment fixture;

[0059] S2, controlling the pneumatic mechanism 40 of the loudspeaker pneumatic guide rail type wire adjustment fixture to operate, so that the width stretching pin 33 pushes the silk thread from the initial position toward the arc anti-drop pin 31 to form an arc on the silk thread;

[0060] S3. After the welding of the brocade wire and the terminal board of the speaker assembly (the terminal board is generally arranged on the basin frame) is completed, the pneumatic mechanism 40 is controlled to restore the width stretching pin 33 to the initial position.

[0061] As described above, the embodiment of the present application proposes a pneumatic guide rail type line adjustment fixture for a loudspeaker and also proposes a corresponding method.

[0062] The jig of the present application uses a pre-soldering method to adjust the lead wire in advance before placing the paper cone during the speaker manufacturing process, thereby increasing the lead wire visual function and helping to improve the work quality.

[0063] This application uses pneumatic drive + positioning column to achieve the curvature adjustment of the brocade wire, which can increase the consistency of the wire adjustment curvature and improve the efficiency of the wire adjustment operation.

[0064] This application can prevent the problem of wire bonding and reduce the wiring difficulties in the industry. Usually, the wiring defect rate on speakers with smaller design space and higher power is more than 15%. This application can reduce the wiring defect rate to 0%, almost completely solving the problem, greatly reducing the cost of rework and scrapping, and greatly improving the product pass rate.

[0065] This application can effectively improve the operating efficiency of the line adjustment process. For example, efficiency improvement + personnel saving: if calculated based on an hourly output of 1200 PCS / H, the conventional entire line adjustment process operation process is: 1 person inserts the fixture, 1 person tightens the lead, 2 people solder, and 1 person takes the fixture. In a very streamlined mode, 5 people are required to work; if some fixtures are difficult to insert, 2 people are needed to insert the fixture, so 6 people are needed to work; according to the pneumatic line adjustment method of this application, it is also 1200 PCS / H, only 4 people are needed (put the speaker on the fixture table, employees step on the foot pedal to automatically adjust the line, and employees solder), the beat is 3600s÷(1200 / 4)=12S, which is completely sufficient, and 1~2 people can be saved in this mode.

[0066] 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.

[0067] 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 pneumatic guide rail type wire adjustment fixture for a loudspeaker, used for adjusting the curvature of a silk wire in a loudspeaker assembly, characterized in that: include: The fixture body, the placement table, the line adjustment mechanism and the pneumatic mechanism; among them, The fixture body has an upper surface; The placing table is protrudingly arranged on the upper surface of the fixture body and is used to place a speaker assembly; the speaker assembly includes a basin frame, a voice coil and a silk thread, but does not include a paper basin and a magnetic system; The wire adjustment mechanism comprises an arc anti-drop pin and a guide rail groove adjacently arranged on the placement table and a width stretching pin located in the guide rail groove, wherein the width stretching pin can move in the guide rail groove under the drive of the pneumatic mechanism, and a gap for accommodating the silk thread is formed between the width stretching pin and the arc anti-drop pin, and the width stretching pin is used to push the silk thread toward the direction of the arc anti-drop pin to form an arc on the silk thread; The pneumatic mechanism is connected to the width stretching pin and is used to provide power to drive the width stretching pin to move in the guide rail groove; The placement platform is a circular boss, so that the basin frame of the speaker assembly can be mounted on the circular boss; the inner diameter of the opening of the basin frame matches the diameter of the placement platform; The pneumatic mechanism comprises a cylinder, a piston rod of which is connected to the width stretching pin; The speaker pneumatic guide rail type line adjustment fixture further includes: a foot switch for controlling the pneumatic mechanism; A hole for avoiding air is arranged at the center of the placing table; The upper surface of the jig body is an inclined surface, and the upper surface of the placement table is parallel to the upper surface of the jig body; The pneumatic mechanism can drive the width stretching pin to move back and forth between an initial position and a line adjustment position, wherein the line adjustment position is closer to the arc anti-slip pin than the initial position; The wire adjustment mechanism has two, which are arranged side by side on the placement table and are used to adjust the curvature of the two silk wires of the speaker assembly respectively; The pneumatic mechanism also includes a mounting bracket for fixing the cylinder to the fixture body; The fixture body has a cylinder mounting hole for accommodating the cylinder, and the guide rail groove is connected to the cylinder mounting hole.

2. A speaker line adjustment method, used for the speaker pneumatic guide rail line adjustment fixture as claimed in claim 1, the method comprising: Place the speaker assembly face down on the placement table of the speaker pneumatic guide rail type wire adjustment fixture, so that the placement table is inserted into the opening of the speaker assembly basin frame, and the silk thread of the speaker assembly falls between the width stretching pin and the arc anti-drop pin of the wire adjustment mechanism of the speaker pneumatic guide rail type wire adjustment fixture; Controlling the operation of the pneumatic mechanism of the loudspeaker pneumatic guide rail type wire adjustment fixture, so that the width stretching pin pushes the brocade wire from the initial position toward the direction of the arc anti-drop pin to form an arc on the brocade wire; After the welding of the brocade wire and the terminal board of the speaker assembly is completed, the pneumatic mechanism is controlled to restore the width stretching pin to an initial position.

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