Welding jig for micro loudspeaker

Abstract

The utility model relates to the technical field of welding jigs, and discloses a welding jig for a miniature loudspeaker, which comprises a bottom plate, a plurality of L-shaped positioning seats are fixedly mounted on the bottom plate, mounting seats are fixedly connected between the L-shaped positioning seats, a carrier plate is fixedly connected between the two mounting seats, a plurality of mounting covers are movably mounted in the carrier plate, and the mounting covers are fixedly connected with the L-shaped positioning seats. A bearing cover is fixedly mounted in the mounting cover, a plurality of mounting grooves are formed in the inner side of the bearing cover, and telescopic bags are fixedly connected into the mounting grooves. A hollow cavity is formed in a carrier plate, a plurality of mounting covers are arranged in the carrier plate, bearing covers are arranged in the mounting covers, and telescopic bags capable of expanding and protruding are arranged in mounting grooves in the inner sides of the bearing covers, so that the air pressure of the cavities in the carrier plate, the mounting covers and the mounting grooves is changed through an external air pump; the multiple telescopic bags on the inner side of the bearing cover can expand and protrude synchronously, lossless clamping can be carried out on the miniature loudspeakers of different sizes, and the overall jig is high in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding fixture technical field, especially micro loudspeaker's welding fixture. BACKGROUND

[0002] The tin soldering operation of the micro loudspeaker is an important link for realizing the stable connection with the circuit, and the micro loudspeaker pin welding is a process for firmly connecting the loudspeaker pin and the circuit board pad by solder melting to ensure the stable transmission of audio signals, and in modern production processes, the pin welding of the micro loudspeaker is mostly carried out by using automatic tin soldering equipment.

[0003] When the pin of the micro loudspeaker is welded by the tin soldering equipment, the micro loudspeaker needs to be placed into the corresponding fixture for positioning and fixing, and most of the current welding fixtures have poor adaptability and can only be used for fixing the micro loudspeaker of a specific size, so when the product specifications change, the fixture needs to be replaced, which not only increases the production cost but also reduces the production efficiency, and in addition, when the traditional fixture clamps the loudspeaker, the clamping force is uneven or too large, which can cause scratches and deformation of the loudspeaker shell, even damage the internal components, and affect the product quality. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a micro loudspeaker's welding fixture, which can realize nondestructive clamping of micro loudspeakers of different sizes, greatly improve the adaptability of the fixture, and effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that

[0006] A micro loudspeaker's welding fixture, comprising a bottom plate, a plurality of L-shaped positioning seats are fixedly installed on the bottom plate, and a mounting seat is fixedly connected between two of them, a carrier plate is fixedly connected between two mounting seats, a plurality of mounting covers are movably installed in the carrier plate, a supporting cover is fixedly installed in the mounting cover, a plurality of mounting grooves are formed in the inner side of the supporting cover, and an elastic bag is fixedly connected in the mounting groove.

[0007] As a further preferred scheme of the utility model, the carrier plate is a hollow structure, and a pipe is fixedly installed at the lower end of the carrier plate and connected with an external air pump through a pipeline.

[0008] As a further preferred scheme of the utility model, a plurality of jack holes are formed in the bottom of the carrier plate, and a screw groove is further formed in the top of the carrier plate above the jack holes, a plurality of groups of jack holes and screw grooves are vertically formed in the carrier plate, which can provide basic conditions for the installation of the mounting cover.

[0009] As a further preferred scheme of the utility model, the installation cover outside is fixedly installed with a sealing ring, a plurality of first air holes are arranged on the installation cover above the sealing ring, and the plurality of first air holes are arranged along the contour ring outside the installation cover. The plurality of first air holes outside the installation cover can make the air pump charge and discharge the inner cavity of the installation cover through the inner cavity of the carrier plate. The upper end of the installation cover passes through the insertion hole and is screw-connected in the screw groove. The lower end of the installation cover and the sealing ring are inserted and installed in the insertion hole.

[0010] As a further preferred scheme of the utility model, a plurality of dismounting grooves are arranged on the lower end of the installation cover. The dismounting grooves are arranged to make the installation cover be conveniently dismounted by means of a clamp spring wrench and other tools.

[0011] As a further preferred scheme of the utility model, a second air hole is arranged on the inner side of the installation groove. The inner cavity of the installation groove is communicated with the inner cavity of the installation cover through the second air hole.

[0012] As a further preferred scheme of the utility model, a positioning groove is arranged on one side of the telescopic bag. A top sheet is fixedly installed in the positioning groove. The telescopic bag is expanded and protruded by means of the change of the air pressure in the installation cover and the installation groove, and cooperates with the top sheet to clamp and fix the micro loudspeaker with different sizes placed in the supporting cover.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, the hollow cavity is arranged in the carrier plate, a plurality of installation covers are arranged in the carrier plate, the supporting cover is arranged in the installation cover, the telescopic bag that can be expanded and protruded is arranged in the installation groove on the inner side of the supporting cover, and then the cavity air pressure in the carrier plate, the installation cover and the installation groove is changed by the external air pump. The plurality of telescopic bags on the inner side of the supporting cover are synchronously expanded and protruded, the micro loudspeaker with different sizes is clamped without damage, and the overall jig adaptability is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the main structure schematic view of the utility model;

[0016] Figure 2 It is the carrier plate sectional view of the utility model;

[0017] Figure 3 It is Figure 2 It is the enlarged view of A in the middle;

[0018] Figure 4 It is Figure 2 It is the enlarged view of B in the middle;

[0019] Figure 5 It is the installation cover structure schematic view of the utility model;

[0020] Figure 6 The main body structure assembly diagram of the utility model.

[0021] In the figure: 1, bottom plate; 2, L-shaped positioning seat; 3, mounting seat; 4, carrier plate; 5, mounting cover; 6, supporting cover; 7, mounting groove; 8, telescopic bag; 9, jack; 10, screw groove; 11, sealing ring; 12, first air hole; 13, dismounting groove; 14, second air hole; 15, positioning groove; 16, top sheet. DETAILED DESCRIPTION

[0022] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As shown in the figure, Figures 1-6 The utility model provides a kind of welding fixture of micro loudspeaker, including bottom plate 1, and multiple L-shaped positioning seat 2 are fixedly installed on bottom plate 1, and two between fixedly connected with mounting seat 3, two mounting seat 3 between fixedly connected with carrier plate 4, multiple mounting cover 5 are movably installed in carrier plate 4, mounting cover 5 is fixedly installed with supporting cover 6, multiple mounting groove 7 are set up in the inboard of supporting cover 6, and mounting groove 7 is fixedly connected with telescopic bag 8.

[0024] As shown in the figure, Figures 2-3 Carrier plate 4 is hollow structure, and pipe joint is fixedly installed on the lower end of carrier plate 4 and is connected with external air pump by pipeline, multiple jacks 9 are set up in the bottom of carrier plate 4, and the top of carrier plate 4 is also set up screw groove 10 above jack 9, multiple jacks 9 and screw groove 10 are vertically set up in carrier plate 4, can provide basic conditions for the installation of mounting cover 5.

[0025] As shown in the figure, Figures 1-5 Sealing ring 11 is fixedly installed on the outside of mounting cover 5, multiple first air holes 12 are set up in mounting cover 5 above sealing ring 11, and multiple first air holes 12 are arranged along the contour annular of the outside of mounting cover 5, multiple first air holes 12 are set up on the outside of mounting cover 5, so that air pump can be inflated and deflated in the inner cavity of mounting cover 5 through the inner cavity of carrier plate 4, mounting cover 5 is screwed in screw groove 10 by passing jack 9 on the upper end, and mounting cover 5 lower end and sealing ring 11 are inserted in jack 9, multiple dismounting grooves 13 are set up in the lower end of mounting cover 5, the setting of dismounting groove 13 can make mounting cover 5 realize convenient dismounting by the aid of tool such as snap spring clamp, second air hole 14 is set up in the inboard of mounting groove 7, the inner cavity of mounting groove 7 is communicated with the inner cavity of mounting cover 5 through second air hole 14, positioning groove 15 is set up on one side of telescopic bag 8, and top sheet 16 is fixedly installed in positioning groove 15, telescopic bag 8 realizes expansion and protrusion by the aid of the change of air pressure in mounting cover 5 and mounting groove 7, and cooperates with top sheet 16 to clamp and fix the micro loudspeaker of different sizes placed in supporting cover 6.

[0026] It should be noted that the utility model discloses a kind of welding jigs of micro loudspeaker, before carrying out welding operation, load plate 4 is fixed on bottom plate 1 by mounting seat 3, when load plate 4 is installed, multiple micro loudspeakers are placed in corresponding supporting cover 6, when all micro loudspeakers are placed, external air pump is connected with the pipe joint of the lower end of load plate 4 and starts, air pump fills air to the hollow cavity of load plate 4, gas in load plate 4 enters the inner cavity of mounting cover 5 through first gas hole 12, then enters the inner cavity of mounting groove 7 through second gas hole 14, so that the air pressure of one side of telescopic bag 8 increases, under the action of air pressure, telescopic bag 8 expands and protrudes, top sheet 16 in positioning groove 15 acts together with telescopic bag 8, i.e. multiple telescopic bags 8 and top sheet 16 inside single supporting cover 6 can be used to clamp micro loudspeaker from multiple directions simultaneously, due to the expansion characteristics of telescopic bag 8, clamping force can be adjusted adaptively according to the size of loudspeaker, avoid damage caused by improper clamping, realize lossless clamping, after micro loudspeaker is clamped stably, it can be used Automatic soldering equipment is used to weld the pin of micro loudspeaker.Operation is carried out after welding, air pump stops air supply and exhaust, the air pressure in load plate 4, mounting cover 5 and mounting groove 7 decreases, telescopic bag 8 shrinks, and clamping of micro loudspeaker is released.

[0027] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a miniature loudspeaker, characterized in that: Includes a base plate (1), on which multiple L-shaped positioning seats (2) are fixedly installed, and mounting seats (3) are fixedly connected between two of them. A carrier plate (4) is fixedly connected between two of the mounting seats (3). Multiple mounting covers (5) are movably installed inside the carrier plate (4). A support cover (6) is fixedly installed inside the mounting cover (5). Multiple mounting grooves (7) are opened on the inner side of the support cover (6). A telescopic bladder (8) is fixedly connected inside the mounting groove (7).

2. The welding fixture for a miniature loudspeaker according to claim 1, characterized in that: The carrier plate (4) has a hollow structure, and a pipe is fixedly installed at the lower end of the carrier plate (4) and connected to an external air pump through a pipe.

3. The welding fixture for a miniature loudspeaker according to claim 1, characterized in that: The bottom of the carrier plate (4) is provided with multiple insertion holes (9), and the top of the carrier plate (4) above the insertion holes (9) is also provided with screw grooves (10).

4. The welding fixture for a miniature loudspeaker according to claim 3, characterized in that: A sealing ring (11) is fixedly installed on the outside of the mounting cover (5). The mounting cover (5) located above the sealing ring (11) has multiple first air holes (12), and the multiple first air holes (12) are arranged in a ring along the outer contour of the mounting cover (5). The upper end of the mounting cover (5) passes through the insertion hole (9) and is threaded into the screw groove (10). The lower end of the mounting cover (5) and the sealing ring (11) are inserted into the insertion hole (9).

5. The welding fixture for a miniature loudspeaker according to claim 4, characterized in that: The mounting cover (5) has multiple loading and unloading slots (13) at its lower end.

6. The welding fixture for a miniature loudspeaker according to claim 1, characterized in that: The mounting groove (7) has a second air hole (14) on its inner side, and the inner cavity of the mounting groove (7) is connected to the inner cavity of the mounting cover (5) through the second air hole (14).

7. The welding fixture for a miniature loudspeaker according to claim 6, characterized in that: The telescopic bladder (8) has a positioning groove (15) on one side, and a top piece (16) is fixedly installed in the positioning groove (15).

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