Loudspeaker ultra-thin sound cavity welding equipment and method

Abstract

The invention relates to the technical field of welding, in particular to loudspeaker ultra-thin sound cavity welding equipment and method, and the equipment comprises a workbench which is independently and fixedly arranged; the plurality of clamping blocks are arranged on the workbench and are attached to the side surface of the sound cavity shell; the multiple welding heads are arranged above the workbench and move close to and away from the workbench; the feeding push block slides on the workbench in the length direction of the sound cavity shell. The lower pressing block vertically slides on the feeding push block; the two supporting modules are symmetrically arranged on the two sides of the sound cavity shell; each supporting module comprises a sliding block which slides along the length direction of the sound cavity shell; the first sliding rod vertically slides on the sliding block; the second sliding rod vertically slides on the sliding block, and a sliding groove is formed in the bottom end of the second sliding rod; the rotating block is hinged to the bottom of the first sliding rod and provided with a sliding column extending into the sliding groove; and a rotating wheel is arranged on the rotating block. The problem that existing welding equipment is not high in welding quality can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a device and a method for welding an ultra-thin sound cavity of a loudspeaker. Background Art

[0002] As electronic devices become thinner and lighter, the built-in speakers also need to be lightweight. The speaker cavity also needs to be smaller and thinner when designed. The cavity is usually divided into two parts: the shell and the cover. During production, the shell and the cover need to be welded together to form a cavity. As the side wall of the shell becomes thinner, the welding head is more likely to deform the shell when pressing down, such as Figure 1 As shown, when the side wall of the shell is deformed outward (as shown on the right side of the figure), support can be provided by the external positioning components. However, when the side wall of the shell is deformed inward (as shown on the left side of the figure), the external positioning components cannot provide support. As the side wall deforms, the clamping force of the welding head at that location is insufficient, resulting in cold welding or misalignment of the welding position, which seriously affects the welding quality. Summary of the invention

[0003] The invention provides a device and method for welding an ultra-thin sound cavity of a loudspeaker, which can effectively solve the problem of low welding quality of existing welding equipment in the background technology.

[0004] The present invention provides a speaker ultra-thin sound cavity welding device, comprising: Workbench, independent fixed setting; A plurality of clamping blocks are arranged on the workbench and fit with the side surfaces of the sound cavity housing; Multiple welding heads are arranged above the workbench and move toward and away from the workbench; The loading push block slides along the length direction of the sound cavity shell on the workbench; The lower pressing block slides vertically on the feeding pushing block; Two support modules are symmetrically arranged on both sides of the sound cavity housing; each support module includes: A slider slides along the length direction of the sound cavity shell; A first sliding rod slides vertically on the sliding block; A second sliding rod slides vertically on the sliding block, and a sliding groove is arranged at the bottom end; The rotating block is hinged to the bottom of the first sliding rod and is provided with a sliding column extending into the sliding groove; the rotating block is also provided with a rotating wheel.

[0005] Furthermore, the support module also includes: The guide plate is arranged above the workbench and fixed relatively to the workbench; the guide plate is provided with a first guide groove and a second guide groove; the first guide groove is inclined upward at one end away from the loading push block, and the second guide groove is inclined upward at one end away from the loading push block; A first guide post is fixedly arranged on the first slide bar, and the first guide post is lifted into the first guide groove; A second guide post is fixedly arranged on the second slide bar, and the second guide post rises into the second guide groove.

[0006] Furthermore, guide rollers are arranged on both the first guide column and the second guide column.

[0007] Further, the length of the inclined portion of the first guide groove is smaller than the length of the inclined portion of the second guide groove.

[0008] Further, the inclined portion of the first guide groove and the inclined portion of the second guide groove are parallel to each other.

[0009] Furthermore, one end of the first guide groove or the second guide groove close to the loading push block is connected to the side wall of the guide plate; and a supporting roller aligned with the first guide groove or the second guide groove is provided on the loading push block.

[0010] Furthermore, the support module also includes: A third sliding rod slides vertically on the sliding block and is fixedly connected to the first sliding rod; The fourth sliding rod slides vertically on the sliding block and is fixedly connected to the second sliding rod.

[0011] Furthermore, a plurality of pneumatic push rods are arranged on the feeding push block, and the lower pressing block is driven by the pneumatic push rods.

[0012] Furthermore, a rubber bottom plate is arranged at the bottom of the lower pressing block.

[0013] The present invention also provides a method for welding an ultra-thin sound cavity of a loudspeaker, which is used for the above-mentioned ultra-thin sound cavity welding device of the loudspeaker, comprising: S10: The first slide bar and the second slide bar are both raised, so that the rotating wheel moves up to the highest position; the lower pressing block and the welding head are also moved up to the highest position; S20: placing the sound cavity shell on the workbench, using the clamping block to press against the side wall of the sound cavity shell, and then lowering the first slide bar and the second slide bar so that the rotating wheel presses the inner side wall of the sound cavity shell in the length direction, and the slide block moves to the position closest to the loading push block; placing the sound cavity cover plate on the workbench, and then lowering the pressing block to press the sound cavity cover plate; S30: the loading push block moves toward the sound cavity housing to send the sound cavity cover plate toward the sound cavity housing; the slider moves synchronously with the loading push block, and when the rotating wheel is about to reach the side of the sound cavity housing, the first slide bar and the second slide bar rise to move the rotating wheel up to the highest point; S40: After the sound cavity cover plate covers the sound cavity shell, the position of the loading push block is kept unchanged, and the welding head located in the length direction of the sound cavity shell is lowered to perform welding; S50: After welding, the welding head and the feeding push block are reset, and then the welding head located in the width direction of the sound cavity shell is lowered for welding, and the welding of the sound cavity can be completed.

[0014] The technical solution of the present invention can achieve the following technical effects: When the loading push block pushes the sound cavity cover to contact the sound cavity shell, the welding equipment presses the inside of the side wall of the sound cavity shell through the rotating wheel, and applies a contact force from the inside to the outside to the side wall of the shell, so that the side wall of the shell will only deform outward when deformed, and the rotating wheel will also move with the movement of the sound cavity cover plate pair, thereby pushing the side wall of the sound cavity shell in the entire length direction, thereby ensuring the welding quality of the sound cavity shell in the entire length direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the deformation of the sound cavity in the prior art; Figure 2 It is a structural schematic diagram of the ultra-thin sound cavity welding equipment of the speaker in the present invention; Figure 3 This is a schematic diagram of the structure of the ultra-thin sound cavity welding device for the speaker in the present invention after the workbench and the welding head are hidden; Figure 4 It is a structural schematic diagram of the support module in the present invention; Figure 5 is a schematic diagram of the first state of the support module in the present invention when in motion; Figure 6 is a schematic diagram of the second state of the support module in the present invention when in motion; Figure 7 is a schematic diagram of the third state of the support module in the present invention when in motion; Figure 8 It is a structural schematic diagram of the guide plate in the present invention; Fig. 9 This is a schematic diagram of the second structure of the transfer block in the present invention; Fig.10 This is a third structural schematic diagram of the transfer block in the present invention.

[0017] Figure numerals: 1. workbench; 2. clamping block; 3. welding head; 4. loading push block; 41. supporting roller; 42. pneumatic push rod; 5. pressing block; 6. supporting module; 61. sliding block; 62. first sliding rod; 62a. first guide column; 63. second sliding rod; 63a. second guide column; 64. rotating block; 65. rotating wheel; 66. guide plate; 66a. first guide groove; 66b. second guide groove; 67. third sliding rod; 68. fourth sliding rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention relates to a welding device for an ultra-thin sound cavity of a loudspeaker, such as Figures 2~4 As shown, its main components include a workbench 1, a clamping block 2, a welding head 3, a loading push block 4, a lower pressing block 5 and a supporting module 6. The specific structures of each component are as follows: The workbench 1 is independently fixed and usually fixedly installed on the ground or a rack; the workbench 1 is divided into multiple areas, including a shell placement area and a cover placement area that fit each other, and the cover placement area is higher than the shell placement area, so that the sound cavity cover can be moved to the sound cavity shell by horizontal movement.

[0022] Multiple clamping blocks 2 are arranged on the workbench 1, and are used to fit with the side of the sound cavity shell, so that the sound cavity shell can be fixed on the workbench 1, and provide support for the side wall of the sound cavity shell during welding. Among the multiple clamping blocks 2, one clamping block 2 used to abut against the length side wall of the sound cavity shell and another clamping block 2 abutting against the length side wall of the sound cavity shell are arranged in a structure that can slide on the workbench 1, so as to facilitate the placement of the sound cavity shell; the remaining clamping block 2 is fixed on the workbench 1, so that it forms a right angle structure with the cover plate placement area, so as to facilitate the positioning of the sound cavity shell.

[0023] Multiple welding heads 3, including two welding heads 3 for welding in the length direction of the sound cavity, and two welding heads 3 for welding in the width direction of the sound cavity. Each welding head 3 is arranged above the workbench 1, and moves toward and away from the workbench 1. The movement track of each welding head 3 is arranged at an angle, so as to leave more space for the installation of other components above.

[0024] The loading push block 4 slides on the workbench 1 along the length direction of the sound cavity shell under the drive of the power device, and slides between the shell placement area and the cover plate placement area.

[0025] The lower pressing block 5 slides vertically on the feeding pushing block 4 to press the sound cavity cover.

[0026] Two support modules 6 are symmetrically arranged on both sides of the sound cavity housing; each support module 6 includes: The slider 61 slides along the length direction of the sound cavity housing under the drive of the power device; A first sliding rod 62 slides vertically on the sliding block 61; The second slide bar 63 slides vertically on the slide block 61, and a slide groove is provided at the bottom end; The rotating block 64 is hinged to the bottom of the first sliding rod 62 and is provided with a sliding column extending into the sliding groove; the rotating block 64 is also provided with a rotating wheel 65.

[0027] Based on the above-mentioned speaker ultra-thin sound cavity welding equipment, the present invention uses the following speaker ultra-thin sound cavity welding method to weld the sound cavity, including: S10: The first slide bar 62 and the second slide bar 63 are both raised, so that the rotating wheel 65 moves up to the highest position; the lower pressing block 5 and the welding head 3 are also moved up to the highest position; S20: Place the sound cavity shell on the workbench 1, use the clamping block 2 to press against the side wall of the sound cavity shell, then the first slide bar 62 and the second slide bar 63 are lowered, so that the rotating wheel 65 presses the inner side wall of the sound cavity shell in the length direction, and the slide block 61 moves to the position closest to the loading push block 4; place the sound cavity cover plate on the workbench 1, and then the lower pressing block 5 is lowered to press the sound cavity cover plate; S30: The loading push block 4 moves toward the sound cavity housing to send the sound cavity cover plate to the sound cavity housing; the slider 61 moves synchronously with the loading push block 4, and when the rotating wheel 65 is about to reach the side of the sound cavity housing, the first slide bar 62 and the second slide bar 63 rise to make the rotating wheel 65 move up to the highest point; S40: After the sound cavity cover covers the sound cavity shell, the position of the loading push block 4 is kept unchanged. At this time, the lower pressing block 5 will continue to maintain the pressure on the sound cavity cover, so that the sound cavity cover is close to the sound cavity shell and generates downward pressure on the sound cavity shell, so that the sound cavity shell keeps the side wall deformed toward the outer shape; then the welding head 3 located in the length direction of the sound cavity shell descends to perform welding; S50: After welding, the welding head 3 is reset, the feeding push block 4 drives the lower pressure block 5 to move upward to remove the downward pressure and reset, and then the welding head 3 located in the width direction of the sound cavity shell is lowered for welding, and the welding of the sound cavity can be completed.

[0028] The specific principle of this welding equipment is as follows: The length direction of the sound cavity is relatively long and is therefore the area most prone to deformation. During welding, it is necessary to ensure that the side walls of the sound cavity shell here do not deform inward.

[0029] During operation, when the upper push block 4 pushes the sound cavity cover plate to contact the sound cavity shell, the pressure exerted by the lower pressure block 5 on the sound cavity cover plate will be transmitted to the side wall of the sound cavity shell. Figure 5 As shown, the descending wheel 65 will press the inside of the side wall of the sound cavity shell, and apply an abutting force from the inside to the outside to the side wall of the shell, so that the side wall of the shell will only deform outward when deformed, and then the clamping block 2 will limit the degree of deformation, thereby ensuring that the deformation of the side wall of the shell will not be too large. During the subsequent welding, the welding head 3 can apply enough pressure to the sound cavity to ensure the welding quality. In addition, in the process of the loading push block 4 transporting the sound cavity cover plate, since the slider 61 will move synchronously with the loading push block 4, the wheel 65 will also move with the movement of the sound cavity cover plate, thereby pushing the side wall of the sound cavity shell in the entire length direction outward, thereby ensuring the welding quality of the sound cavity shell in the entire length direction.

[0030] After welding in the length direction, the longer two sides of the sound cavity cover and the sound cavity shell have been connected into one. In this way, when welding in the width direction later, due to the limitation of the already welded parts, there will be no inward deformation in the width direction. Therefore, there is no need to use the structure of the support module 6, and direct welding is sufficient.

[0031] When necessary, the clamping block 2 can be provided with a concave curved surface structure on the surface in contact with the side wall of the sound cavity shell, so that the outward deformation of the side wall of the sound cavity shell can be better maintained. The curved surface structure should be as shallow as possible and the radius should be as large as possible, so that the outward deformation of the side wall of the sound cavity shell can be maintained while the side wall of the sound cavity shell will not have too much deformation space, thereby avoiding the pressure on the sound cavity when the welding head 3 is pressed down due to excessive deformation of the side wall of the sound cavity shell, resulting in insufficient pressure, affecting the welding quality.

[0032] The specific shape of the rotating block 64 can be designed according to the installation conditions inside the sound cavity, for example, it can be as follows: Figure 5 and Figures 9-10 The various shapes shown are used to avoid interference between the rotating block 64 and the internal structure of the sound cavity.

[0033] The movement of the first slide bar 62 and the second slide bar 63 can be realized by various existing power technologies such as electric push rods, but these technologies require a relatively accurate electric control system to ensure that the first slide bar 62 and the second slide bar 63 can move accurately at a specific position. Therefore, they are more dependent on the electric control system, which is costly and has poor reliability. In order to solve the above problems, the welding equipment provides a purely mechanically controlled support module 6 with lower cost and higher reliability. In addition to the aforementioned structure, each support module 6 also includes: The guide plate 66 is arranged above the workbench 1 and is usually installed on the same frame as the workbench 1 so that it remains relatively fixed to the workbench 1. The guide plate 66 is provided with a first guide groove 66a and a second guide groove 66b. Figure 8 As shown, the end of the first guide groove 66a away from the loading push block 4 is inclined upward, and the end of the second guide groove 66b away from the loading push block 4 is inclined upward; A first guide post 62a is fixedly disposed on the first slide bar 62, and the first guide post 62a is lifted into the first guide groove 66a; A second guide post 63 a is fixedly disposed on the second slide bar 63 , and the second guide post 63 a rises into the second guide groove 66 b .

[0034] During operation, as long as the slider 61 moves, the first slider 62 and the second slider 63 can be driven to reach different positions of the first guide groove 66a and the second guide groove 66b, so that the first guide column 62a and the second guide column 63a in the first guide groove 66a and the second guide groove 66b change their heights as their positions change, thereby driving the rise and fall of the first slider 62 and the second slider 63. Under this structure, it can be ensured that the first slider 62 and the second slider 63 can move in time when they move to the corresponding positions, and the situation that the rotating wheel 65 collides with the side wall in the width direction of the sound cavity housing due to the delay of the electric control system will not occur.

[0035] In order to reduce the friction between the first guide column 62a and the second guide column 63a and the first guide groove 66a and the second guide groove 66b and to increase the service life of the equipment, guide rollers may be provided on both the first guide column 62a and the second guide column 63a.

[0036] It is preferred that the length of the inclined portion of the first guide groove 66a is smaller than the length of the inclined portion of the second guide groove 66b, so that when the slider 61 slides to this position, that is, when the first slide bar 62 and the second slide bar 63 need to rise, the second slide bar 63 will contact the inclined portion before the first slide bar 62, that is, the second slide bar 63 will rise before the first slide bar 62, so that the rotating block 64 can rotate first to separate the rotating wheel 65 from the side wall of the sound cavity housing, such as Figure 6 As shown, the first slide bar 62 and the second slide bar 63 will then rise together to move the rotating block 64 and the rotating wheel 65 out of the sound cavity housing. Similarly, when descending, the first slide bar 62 and the second slide bar 63 will first descend together to make the rotating block 64 and the rotating wheel 65 enter the sound cavity housing, and then the second slide bar 63 will descend alone for a distance to drive the rotating block 64, so that the rotating wheel 65 sticks to the side wall of the sound cavity housing. If the inclined portion of the first guide groove 66a is the same length as the inclined portion of the second guide groove 66b, then the first slide bar 62 and the second slide bar 63 will rise and fall together, and at this time the rotating wheel 65 is still pressed on the side wall of the sound cavity housing, so it is easy to scratch the side wall of the sound cavity housing, or it will drive the sound cavity housing to rise and fall together, affecting the normal welding of the sound cavity.

[0037] It is preferred that the inclined portion of the first guide groove 66a and the inclined portion of the second guide groove 66b are parallel to each other, so that when the first slide bar 62 and the second slide bar 63 slide up and down, the sliding speeds of the two will remain consistent, thereby ensuring the overall stability of the welding equipment.

[0038] In order to leave room for the welding head 3, the support module 6, etc. to move, the power device that drives the loading push block 4 can only be set on the side away from the welding head, and auxiliary components such as guide rails cannot be installed. Therefore, after the loading push block 4 is pushed out to the top of the sound cavity shell, due to the lack of limit, it is easy to cause it to tilt upward, affecting its downward pressure on the sound cavity cover. Therefore, the design of this welding equipment uses a guide plate 66 for auxiliary limit, and the specific structure is as follows: The first guide groove 66a or the second guide groove 66b is connected to the side wall of the guide plate 66 near one end of the loading push block 4; the loading push block 4 is provided with a support roller 41 aligned with the corresponding first guide groove 66a or second guide groove 66b. When the loading push block 4 is pushed out to the top of the sound cavity housing, the support roller 41 will enter the first guide groove 66a or the second guide groove 66b to form a limit position to prevent the loading push block 4 from tilting upward.

[0039] Preferably, a third sliding bar 67 and a fourth sliding bar 68 are also provided in the support module 6; The third slide bar 67 slides vertically on the slider 61 and is fixedly connected to the first slide bar 62 by a connecting block, so that the first slide bar 62 and the third slide bar 67 can move synchronously, and the first slide bar 62 is restricted from rotating to prevent the first slide bar 62 from rotating and affecting its connection with the rotating block 64; similarly, the fourth slide bar 68 slides vertically on the slider 61 and is fixedly connected to the second slide bar 63 by a connecting block, so that the second slide bar 63 and the fourth slide bar 68 can move synchronously, and the second slide bar 63 is restricted from rotating to prevent the second slide bar 63 from rotating and affecting its connection with the rotating block 64.

[0040] Since the support module 6 occupies a part of the space, the loading push block 4 can only press a part of the sound cavity cover plate in order to avoid hitting the support module 6. The part of the sound cavity cover plate facing the support module 6 needs to be given up. In order to limit this part, the welding equipment continues to optimize the design of the support module 6. When the first slide bar 62 and the second slide bar 63 rise to the highest point, the rotating block 64 will drive the rotating wheel 65 to rotate to the vertical direction, and the height of the bottom of the rotating wheel 65 is aligned with the height of the sound cavity cover plate. Figure 7 As shown, the rotating wheel 65 can press the sound cavity cover plate to complete the position limiting of the sound cavity cover plate.

[0041] Preferably, a plurality of pneumatic push rods 42 are provided on the feeding push block 4, and the lower pressing block 5 is driven by the pneumatic push rods 42, and the pneumatic push rods 42 are driven by high-pressure gas. This driving mode will produce an overload protection effect, effectively preventing the lower pressing block 5 from exerting excessive pressure on the sound cavity cover plate, thereby causing the sound cavity cover plate to be damaged. Preferably, a rubber bottom plate is provided at the bottom of the lower pressing block 5, and the friction force on the sound cavity cover plate is increased by the rubber bottom plate, thereby ensuring the driving effect on the sound cavity cover plate.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A speaker ultra-thin sound cavity welding device, characterized in that: include: A workbench (1), independently fixed; A plurality of clamping blocks (2) are arranged on the workbench (1) and fit closely to the side surfaces of the sound cavity housing; A plurality of welding heads (3) are arranged above the workbench (1) and move towards and away from the workbench (1); A loading push block (4) slides on the workbench (1) along the length direction of the sound cavity shell; A lower pressing block (5) slides vertically on the feeding pushing block (4); Two support modules (6) are symmetrically arranged on both sides of the sound cavity housing; each of the support modules (6) comprises: A slider (61) slides along the length direction of the sound cavity housing; A first sliding rod (62) slides vertically on the sliding block (61); A second sliding rod (63) slides vertically on the sliding block (61) and has a sliding groove at its bottom end; The rotating block (64) is hinged to the bottom of the first sliding rod (62) and is provided with a sliding column extending into the sliding groove; the rotating block (64) is also provided with a rotating wheel (65).

2. The speaker ultra-thin sound cavity welding equipment according to claim 1 is characterized in that: The support module (6) further comprises: A guide plate (66) is arranged above the workbench (1) and fixed relative to the workbench (1); a first guide groove (66a) and a second guide groove (66b) are arranged on the guide plate (66); an end of the first guide groove (66a) away from the loading push block (4) is inclined upward, and an end of the second guide groove (66b) away from the loading push block (4) is inclined upward; A first guide column (62a) is fixedly arranged on the first slide bar (62), and the first guide column (62a) rises into the first guide groove (66a); A second guide column (63a) is fixedly arranged on the second sliding rod (63), and the second guide column (63a) rises into the second guide groove (66b).

3. The speaker ultra-thin sound cavity welding equipment according to claim 2 is characterized in that: Guide rollers are arranged on the first guide column (62a) and the second guide column (63a).

4. The speaker ultra-thin sound cavity welding equipment according to claim 2 is characterized in that: The length of the inclined portion of the first guide groove (66a) is smaller than the length of the inclined portion of the second guide groove (66b).

5. The speaker ultra-thin sound cavity welding equipment according to claim 4 is characterized in that: The inclined portion of the first guide groove (66a) and the inclined portion of the second guide groove (66b) are parallel to each other.

6. The speaker ultra-thin sound cavity welding equipment according to claim 2 is characterized in that: One end of the first guide groove (66a) or the second guide groove (66b) close to the loading push block (4) is connected to the side wall of the guide plate (66); and a supporting roller (41) aligned with the first guide groove (66a) or the second guide groove (66b) is provided on the loading push block (4).

7. The speaker ultra-thin sound cavity welding equipment according to claim 1 is characterized in that: The support module (6) further comprises: a third sliding rod (67) which slides vertically on the sliding block (61) and is fixedly connected to the first sliding rod (62); The fourth sliding rod (68) slides vertically on the sliding block (61) and is fixedly connected to the second sliding rod (63).

8. The speaker ultra-thin sound cavity welding device according to claim 1 is characterized in that: A plurality of pneumatic push rods (42) are arranged on the loading push block (4), and the lower pressing block (5) is driven by the pneumatic push rods (42).

9. The speaker ultra-thin sound cavity welding device according to claim 8, characterized in that: A rubber bottom plate is arranged at the bottom of the lower pressing block (5).

10. A method for welding an ultra-thin sound cavity of a loudspeaker, characterized in that: The ultra-thin sound cavity welding device for a loudspeaker as claimed in any one of claims 1 to 9 comprises: S10: The first slide bar (62) and the second slide bar (63) are both raised, so that the rotating wheel (65) moves up to the highest position; the lower pressing block (5) and the welding head (3) are also moved up to the highest position; S20: placing the sound cavity shell on the workbench (1), using the clamping block (2) to press against the side wall of the sound cavity shell, then lowering the first slide bar (62) and the second slide bar (63) so that the rotating wheel (65) presses against the inner side wall of the sound cavity shell in the length direction, and the slide block (61) moves to the position closest to the loading push block (4); placing the sound cavity cover plate on the workbench (1), and then lowering the pressing block (5) to press against the sound cavity cover plate; S30: the loading push block (4) moves toward the sound cavity housing to send the sound cavity cover plate toward the sound cavity housing; the slider (61) moves synchronously with the loading push block (4), and when the rotating wheel (65) is about to reach the side of the sound cavity housing, the first slide bar (62) and the second slide bar (63) rise to move the rotating wheel (65) to the highest position; S40: After the sound cavity cover plate covers the sound cavity shell, the position of the loading push block (4) is kept stationary, and the welding head (3) located in the length direction of the sound cavity shell is lowered to perform welding; S50: After welding, the welding head (3) and the material loading push block (4) are reset, and then the welding head (3) located in the width direction of the sound cavity shell is lowered to perform welding, thereby completing the welding of the sound cavity.

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