A horn air gap adjustment device

Abstract

This utility model discloses a horn air gap adjustment device, including a machine base. Vertically extending and left-right distributed slide rods are provided on the machine base. An upper slide plate and a lower slide plate are slidably connected between the left and right slide rods. The upper and lower slide plates are connected by a spring. A pressure holding component acting on the horn is installed on the lower side of the lower slide plate. A fixing plate is installed at the upper end of the slide rods, and a lifting cylinder is installed on the fixing plate. The piston rod inside the lifting cylinder is connected downwards to the upper slide plate. In this utility model, the slide base and support platform used to support the horn can move back and forth, facilitating the worker's handling of the horn and avoiding the downward pressure area, thus improving safety. This utility model also includes a second pressure plate on the slide base, which can pre-position the horn in the front-back direction, facilitating the subsequent complete locking of the horn in the left-right direction by the first pressure plate, improving processing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker manufacturing technology, and in particular to a loudspeaker air gap adjustment device. Background Technology

[0002] After a loudspeaker is manufactured, the gap between its moving and stationary armatures usually needs to be adjusted to ensure its sound quality.

[0003] As shown in the method for measuring and adjusting the air gap of a car horn disclosed in application number CN201910460288.3, ​​the current horn air gap adjustment work requires the use of special equipment. In the above equipment, the horn needs to be placed on the measuring base for adjustment. However, the base in the device is fixed, and the operator will be interfered with by the clamping mold and other components when picking up and putting down the horn, which reduces efficiency. In addition, the device does not have a limit on the clamping mold and other pressing parts, which poses a certain danger. Therefore, it needs to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a horn air gap adjustment device to solve the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a horn air gap adjustment device, including a machine base, on which vertically extending and left-right distributed slide rods are provided, and upper and lower slide plates are slidably connected between the left and right slide rods. The upper slide plate and the lower slide plate are connected by a spring. A pressing component acting on the horn is installed on the lower side of the lower slide plate. A fixing plate is installed at the upper end of the slide rods, and a lifting cylinder is installed on the fixing plate. The piston rod in the lifting cylinder is connected downward to the upper slide plate.

[0006] A slide table is provided on the machine base on the lower side of the pressing component. A slide seat that can slide back and forth is installed on the slide table via a slide rail. A support platform is installed on the slide seat. A positioning cylinder for controlling the front and rear position of the support platform is installed on the machine base.

[0007] The machine platform is also equipped with a fixed platform, and a lifting platform is installed inside the fixed platform through a lifting drive component. A pressure rod is installed at the lower end of the lifting platform.

[0008] Preferably, the pressing assembly includes a mounting ring mounted on the lower side of the sliding plate, and two positioning rods distributed on the left and right sides are mounted on the lower side of the mounting ring, and a No. 1 pressure plate is integrally formed at the lower end of the positioning rods;

[0009] The pressure bar passes through the lower slide plate and extends into the mounting ring.

[0010] Preferably, the positioning rod is threaded into the mounting ring.

[0011] Preferably, the slide is equipped with two vertical plates distributed on the front and rear sides of the support platform, and a second pressure plate is installed on the side of the two vertical plates that are close to each other.

[0012] Preferably, the sliding plate is provided with a sleeve rod that extends upward through the upper sliding plate, and two springs are also provided, each sleeved on one of the two sleeve rods.

[0013] Preferably, the upper end of the sleeve is fitted with a retaining ring that abuts against the upper side of the upper slide plate.

[0014] Preferably, the upper slide plate between the two sleeve rods has a notch on its rear side for accommodating the lifting platform.

[0015] This utility model provides a horn air gap adjustment device, which has the following beneficial effects:

[0016] In this invention, the slide and support platform used to support the speaker can move back and forth, so that the staff can pick up and put down the speaker, and can avoid the pressure area when the staff picks up and puts down the speaker, thus improving safety.

[0017] This utility model has a second pressure plate on the slide, which can pre-position the speaker in the front and back direction, so that the first pressure plate can completely lock the speaker in the left and right direction, thus improving the processing accuracy.

[0018] In this invention, the No. 1 pressure plate holds and fixes the speaker under the pressure of the spring, avoiding rigid collisions, preventing speaker wear, and improving the yield rate. Attached Figure Description

[0019] Figure 1 This is the front view of this utility model;

[0020] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0021] In the picture:

[0022] 11. Machine base; 12. Slide rod; 13. Fixing plate; 14. Upper slide plate; 15. Lower slide plate; 16. Spring; 17. Slide table; 18. Support table; 19. Fixing table; 20. Lifting table; 21. Pressure rod; 22. Mounting ring; 23. Positioning rod; 24. No. 1 pressure plate; 25. Vertical plate; 26. No. 2 pressure plate; 27. Sleeve rod; 28. Abutment ring; 29. ​​Lifting cylinder; 30. Slide seat. 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 1-2 According to an embodiment of the horn air gap adjustment device of the present invention, it includes a machine base 11, on which vertically extending and left-right distributed slide rods 12 are provided. The left and right slide rods 12 are slidably connected together by an upper slide plate 14 and a lower slide plate 15. The upper slide plate 14 and the lower slide plate 15 are connected by a spring 16. The lower side of the lower slide plate 15 is equipped with a pressing component that acts on the horn. The upper end of the slide rod 12 is equipped with a fixing plate 13, and the fixing plate 13 is equipped with a lifting cylinder 29. The piston rod in the lifting cylinder 29 is connected downward to the upper slide plate 14.

[0028] A slide table 17 is provided on the machine base 11 on the lower side of the pressing assembly. A slide seat 30 that can slide back and forth is installed on the slide table 17 via a slide rail. A support platform 18 is installed on the slide seat 30. A positioning cylinder (not shown in the figure) is installed on the machine base 11 to control the front and rear positions of the slide seat 30 and the support platform 18.

[0029] The machine base 11 is also provided with a fixed platform 19. A lifting platform 20 is installed in the fixed platform 19 through a lifting drive component. A pressure rod 21 is installed at the lower end of the lifting platform 20. The lifting drive can be an electric cylinder, a pneumatic cylinder or other existing equipment. This is prior art and will not be described in detail here.

[0030] When the air gap of the horn needs to be calibrated, the staff places the horn on the support platform 18, and then controls the support platform 18 to move backward through the positioning cylinder until the horn on the support platform 18 is placed directly below the pressure rod 21.

[0031] Then the lifting cylinder 29 presses down the upper slide plate 14. At this time, the upper slide plate 14 drives the lower slide plate 15 to sink through the spring 16, and the lower slide plate 15 can press against the horn located on the support platform 18 through the pressing component and limit its position.

[0032] Then the lifting drive assembly controls the lifting platform 20 to sink, and presses down the iron core inside the horn through the pressure rod 21, and adjusts the air gap inside the horn;

[0033] After the adjustment is completed, the upper slide plate 14, the lower slide plate 15 and the lifting platform 20 rise and reset, and then the support platform 18 moves forward so that the staff can take out the horn that has been adjusted on the support platform 18.

[0034] The pressing assembly includes a mounting ring 22 mounted on the lower side of the sliding plate 15. Two positioning rods 23 are mounted on the lower side of the mounting ring 22, distributed left and right. The lower end of each positioning rod 23 is integrally formed with a pressure plate 24. In this embodiment, to improve the pressing effect, the two opposing sides of the two pressure plates 24 are provided with downward-through arc-shaped grooves to accommodate... Figure 2 The step surface at the edge of the horn is shown, and the pressure rod 21 passes through the lower slide plate 15 and extends into the mounting ring 22, so that the pressure rod 21 is between the left and right pressure plates 24.

[0035] Furthermore, the positioning rod 23 is designed to be threaded into the mounting ring 22 for easy disassembly and replacement of the first pressure plate 24 to adapt to different shaped horns. It should be noted that when the positioning rod 23 is screwed into the bottom surface of the threaded hole in the mounting ring 22, the arc-shaped grooves in the first pressure plate 24 will be set facing each other and will not easily rotate freely under the action of friction.

[0036] In addition, to further improve the accuracy of clamping, the slide block 30 is equipped with two vertical plates 25 distributed on the front and rear sides of the support platform 18, and the two vertical plates 25 are equipped with a second pressure plate 26 on the side where they are close to each other. The two second pressure plates 26 are provided with a second arc-shaped groove that runs through the left and right sides to fit the inner step surface of the speaker.

[0037] When the slide block 30 and the support platform 18 are at their foremost positions, the operator can place the speaker on the support platform 18 and push it laterally between the two second pressure plates 26, so that the speaker is limited in the front and rear by the second pressure plates 26. Then the support platform 18 moves backward, and when the slide plate 15 sinks, the speaker can be limited in the left and right directions by the first pressure plates 24, thus completing the clamping and fixing of the speaker.

[0038] In order to ensure that the spring 16 does not twist when the upper slide plate 14 and the lower slide plate 15 move up and down, the lower slide plate 15 is provided with a sleeve 27 that passes through the upper slide plate 14 upward. The spring 16 is also provided in two parts, and is respectively sleeved on the two sleeves 27.

[0039] In order to prevent the spring 16 from being stretched too much when the upper slide plate 14 is lifted, the upper end of the sleeve rod 27 is equipped with a retaining ring 28 that abuts against the upper side of the upper slide plate 14.

[0040] In addition, a notch is provided on the rear side of the upper slide plate 14 between the two sleeve rods 27 to accommodate the lifting platform 20, so as to avoid interference between the lifting platform 20 and the upper slide plate 14.

[0041] In addition, such as Figure 2 As shown, the lower end of the pressure rod 21 is equipped with a movable probe. When the pressure rod 21 abuts against the armature inside the horn and begins to adjust the gap, the probe will be pressed into the pressure rod 21. At this time, the electrical signal transmitted by the probe can control the pressure rod 21 to decelerate and descend, thereby improving the accuracy of the gap adjustment and increasing efficiency.

[0042] 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 horn air gap adjustment device, comprising a machine base (11), characterized in that: The machine base (11) is provided with vertically extending and left-right distributed slide rods (12). The left and right slide rods (12) are connected together by an upper slide plate (14) and a lower slide plate (15). The upper slide plate (14) and the lower slide plate (15) are connected by a spring (16). The lower slide plate (15) is equipped with a pressure holding component that acts on the horn. The upper end of the slide rod (12) is equipped with a fixing plate (13), and the fixing plate (13) is equipped with a lifting cylinder (29). The piston rod in the lifting cylinder (29) is connected downward to the upper slide plate (14). A slide table (17) is provided on the machine base (11) on the lower side of the pressing component. A slide seat (30) that can slide back and forth is installed on the slide table (17) via a slide rail. A support table (18) is installed on the slide seat (30). A positioning cylinder for controlling the front and rear position of the support table (18) is installed on the machine base (11). The machine base (11) is also provided with a fixed platform (19), and a lifting platform (20) is installed in the fixed platform (19) through a lifting drive component. A pressure rod (21) is installed at the lower end of the lifting platform (20).

2. The horn air gap adjustment device according to claim 1, characterized in that: The pressing assembly includes a mounting ring (22) mounted on the lower side of the lower slide plate (15), and two positioning rods (23) distributed on the left and right sides are mounted on the lower side of the mounting ring (22), and a No. 1 pressure plate (24) is integrally formed at the lower end of the positioning rods (23). The pressure bar (21) passes through the lower slide plate (15) and extends into the mounting ring (22).

3. The horn air gap adjustment device according to claim 2, characterized in that: The positioning rod (23) is threaded into the mounting ring (22).

4. The horn air gap adjustment device according to claim 1, characterized in that: The slide (30) is equipped with two vertical plates (25) distributed on the front and rear sides of the support platform (18), and the two vertical plates (25) are equipped with a second pressure plate (26) on their sides that are close to each other.

5. The horn air gap adjustment device according to claim 1, characterized in that: The lower slide plate (15) is provided with a sleeve (27) that extends upward through the upper slide plate (14). The spring (16) is also provided in two parts, and is respectively sleeved on the two sleeves (27).

6. The horn air gap adjustment device according to claim 5, characterized in that: The upper end of the sleeve (27) is fitted with a retaining ring (28) that abuts against the upper side of the upper slide plate (14).

7. A horn air gap adjustment device according to claim 5, characterized in that: The upper slide plate (14) between the two sleeve rods (27) has a notch on its rear side for accommodating the lifting platform (20).

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