Earphone cabin body shell welding clamp

Abstract

The utility model provides a kind of clamp for earphone cabin shell welding, including rack, rotating machine, tight component and press-down component, wherein, rotating machine and press-down component are all set to rack, tight component is assembled in rotating machine, and is driven to rotate by rotating machine;Tight component includes support plate, movable positioning plate, first driving part and profiling block, movable positioning plate is between support plate and press-down component, profiling block is made of multiple profiling sub-block, positioning slot is set on the side surface of movable positioning plate towards press-down component, cabin shell reverse buckle is set in positioning slot, and between movable positioning plate and press-down component, profiling block is in positioning slot, and extend to cabin shell, first driving part is used to drive profiling sub-block to be close to or away from the inner wall of cabin shell.The utility model can guarantee the welding quality of cabin shell and the consistency of product.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a fixture for welding headphone housings. Background Technology

[0002] like Figure 6 The image shown is an exploded view of the outer shell (a) of a certain model of Bluetooth headset. It specifically includes an inner shell (a2) and an outer shell (a1) made of plastic, with the outer shell (a1) having some light transmittance. During use, the inner shell (a2) is embedded inside the outer shell (a1), and the two fit tightly together. To further improve the connection strength between the outer shell (a1) and the inner shell (a2), they are typically laser-welded together.

[0003] Because the outer shell of the earphone housing (a) has an irregular shape, positioning is difficult, and simple contour-following fixtures are insufficient to meet the requirements of high-precision welding. Specifically, during the welding process, the earphone shell may experience slight displacement, leading to welding position deviations and affecting welding quality and product welding consistency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a jig for welding the outer shell of an earphone housing, which has precise positioning and can ensure welding quality and product welding consistency.

[0005] The embodiments of this utility model are achieved through the following technical solutions: A fixture for welding the outer shell of an earphone housing includes a frame, a rotating platform, a clamping assembly, and a pressing assembly. The rotating platform and the pressing assembly are both mounted on the frame. The clamping assembly is mounted on the rotating platform and driven to rotate by the platform. The clamping assembly includes a support plate, a movable positioning plate, a first driving member, and a contour block. The movable positioning plate is located between the support plate and the pressing assembly. The contour block is composed of multiple contour sub-blocks. A positioning groove is formed on the movable positioning plate facing the pressing assembly. The earphone housing is inverted and disposed within the positioning groove, between the movable positioning plate and the pressing assembly. The contour block is located within the positioning groove and extends into the earphone housing. The first driving member drives the contour sub-block to move closer to or away from the inner wall of the earphone housing.

[0006] According to a preferred embodiment, the first driving component is a gripper cylinder, the gripper body of the gripper cylinder is connected to the contour sub-block via an adjusting block, the adjusting block extending into the positioning groove; the gripper cylinder is mounted on the support plate.

[0007] According to a preferred embodiment, the movable positioning plate includes a base plate, a partition plate, and a contoured support plate arranged sequentially. The base plate is mounted to the support plate via a support column, and the positioning groove is formed in the contoured support plate. A guide groove is formed on the base plate, the claw extends into the guide groove, and the adjusting block is slidably mounted in the guide groove. An adjusting hole is provided through the partition plate, and the adjusting block extends through the adjusting hole into the positioning groove.

[0008] According to a preferred embodiment, a first spring is disposed in the guide groove, and the first spring acts on the adjusting block so that the contoured sub-block assembled on the adjusting block has a tendency to move closer to the inner wall of the cabin shell.

[0009] According to a preferred embodiment, the bottom of the positioning groove is provided with an avoidance notch, and the adjusting block passes through the adjusting hole and the avoidance notch in sequence into the positioning groove.

[0010] According to a preferred embodiment, a limiting step is provided on the inner wall of the guide groove for limiting the adjustment block in the direction of the contoured sub-block near the inner wall of the cabin shell.

[0011] According to a preferred embodiment, the pressing assembly includes a longitudinal frame plate disposed on the frame, a sliding movable plate is adjustablely disposed on the longitudinal frame plate, a pressing head is disposed on the top of the sliding movable plate, and the outer shell of the cabin is located between the pressing head and the movable positioning plate.

[0012] According to a preferred embodiment, an adjusting seat plate is disposed on the top of the sliding block, and an extension plate is adjustablely mounted on the adjusting seat plate. The pressure head is rotatably mounted on the extension plate. The rotation axis of the pressure head relative to the extension plate is collinear with the rotation axis of the clamping assembly.

[0013] According to a preferred embodiment, the sliding block is slidably connected to the longitudinal frame plate, and a second spring is disposed between the frame and the sliding block. The second spring acts on the sliding block to give the sliding block a tendency to move toward the frame.

[0014] According to a preferred embodiment, a second driving member is disposed on the longitudinal frame plate, the second driving member being used to drive the slider movable plate to move longitudinally upward.

[0015] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects: This invention utilizes a contour-following sub-block in conjunction with a positioning groove and a pressing component with a movable positioning plate to securely position the outer shell of the cabin within space. This prevents the outer shell from loosening or experiencing minor displacement during welding, ensuring product consistency. Furthermore, since the outer shell is made of plastic, the laser beam's focus is projected onto the outer surface of the inner shell. Both the outer and inner shells are made of plastic; under the influence of the laser beam, the welding point softens due to heat. The contour-following sub-block can then limit and solidify the corresponding area, preventing deformation of the inner wall of the inner shell during welding and ensuring the assembly of subsequent parts. Simultaneously, it allows the fluid plastic at the welding point to adhere tightly to the inner surface of the outer shell, improving welding quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of the earphone housing shell after the earphone housing shell is assembled using the welding fixture for the earphone housing shell provided in this embodiment of the utility model; Figure 2 A front view structural schematic diagram of the jig for welding the earphone housing shell provided in an embodiment of this utility model; Figure 3 A three-dimensional structural diagram of the clamping assembly provided in an embodiment of this utility model; Figure 4 A first exploded structural diagram of the clamping assembly provided in an embodiment of this utility model; Figure 5 A second exploded view of the clamping assembly provided in an embodiment of this utility model; Figure 6 This is an exploded view of the outer shell of a certain model of Bluetooth headset in an embodiment of this utility model. Icons: 1. Frame; 2. Rotating platform; 3. Tightening assembly; 31. Support plate; 32. Movable positioning plate; 321. Base plate; 3211. Guide groove; 3212. First spring; 3213. Limiting step; 322. Partition; 323. Contouring support plate; 3231. Positioning groove; 3232. Avoidance notch; 33. First driving component; 331. Claw body; 332. Adjusting block; 3221. Adjusting hole; 34. Contouring block; 341. Contouring sub-block; 35. Support column; 4. Pressing assembly; 41. Longitudinal frame plate; 42. Sliding movable plate; 421. Adjusting seat plate; 422. Slide table; 423. Extension plate; 424. Pressure head; 43. Second spring; 44. Second driving component; a. Outer shell of the cabin; a1. Outer shell; a2. Inner shell; a21. Weld. Detailed Implementation

[0018] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] In the description of this utility model, it should be noted that the terms "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.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Please refer to Figures 1 to 6A fixture for welding the outer shell of an earphone housing includes a frame 1, a rotating platform 2, a clamping assembly 3, and a pressing assembly 4. The rotating platform 2 and the pressing assembly 4 are both mounted on the frame 1. The clamping assembly 3 is mounted on the rotating platform 2 and is driven by the rotating platform 2 to rotate. The clamping assembly 3 includes a support plate 31, a movable positioning plate 32, a first driving member 33, and a contour block 34. The movable positioning plate 32 is located between the support plate 31 and the pressing assembly 4. The contour block 34 is composed of multiple contour sub-blocks 341. A positioning groove 3231 is opened on the side of the movable positioning plate 32 facing the pressing assembly 4. The outer shell of the earphone housing a is inverted and disposed in the positioning groove 3231, and is located between the movable positioning plate 32 and the pressing assembly 4. The contour block 34 is located in the positioning groove 3231 and extends into the inner wall of the outer shell of the earphone housing a. The first driving member 33 is used to drive the contour sub-blocks 341 to move closer to or away from the inner wall of the outer shell of the earphone housing a. It is understandable that the shape of the contour block 34 here is adapted to the shape of the inner cavity of the outer shell a or inner shell a2 near the opening end; for each contour sub-block 341, its shape is adapted to the adjacent or corresponding area within the inner cavity of the inner shell a2. In use, the outer shell a is inverted and placed in the positioning groove 3231, and then fitted onto the contour block 34; subsequently, the first driving component 33 drives the contour sub-block 341 to move towards the inner wall of the outer shell a and press against it, cooperating with the positioning groove 3231 to limit the outer shell a in the horizontal direction. Simultaneously, the pressing component 4 moves towards the outer shell a and, cooperating with the movable positioning plate 32, limits the outer shell a in the longitudinal direction, thereby securely positioning the outer shell a; finally, the rotating platform 2 drives the clamping component 3 to rotate, thereby rotating the outer shell a to cooperate with the laser welding head for circumferential welding of the outer shell a. The weld seam a21 path is as follows: Figure 6 As shown. In this embodiment, the contour block 341, in conjunction with the positioning groove 3231 and the pressing component 4, in conjunction with the movable positioning plate 32, securely positions the outer shell a in space, preventing loosening or slight displacement of the outer shell a during welding and ensuring product consistency. Simultaneously, since the outer shell a is made of plastic, the laser beam's focus is projected onto the outer surface of the inner shell a2. Both the outer shell a1 and the inner shell a2 are made of plastic. Under the action of the laser beam, the welding point area softens due to heat. The contour block 341 can limit and solidify the corresponding area, preventing deformation of the inner wall of the inner shell a2 during welding, which would affect the assembly of subsequent parts of the outer shell a. Furthermore, it allows the fluid plastic in the welding point area to adhere tightly to the inner surface of the outer shell a1, improving welding quality.

[0021] Preferably, the first driving component 33 is a gripper cylinder, the gripper body 331 of which is connected to the contour block 341 via an adjusting block 332, which extends into the positioning groove 3231; the gripper cylinder is mounted on the support plate 31. In this embodiment, there are four contour blocks 341, and the four gripper cylinders can drive the four contour blocks 341 to move synchronously. Of course, in other embodiments, the first driving component 33 can also be a telescopic component such as an electric actuator or a cylinder, as long as it can drive the contour blocks 341 to move via the adjusting block 332.

[0022] like Figures 3 to 5 As shown, the movable positioning plate 32 includes a base plate 321, a partition plate 322, and a contoured support plate 323 arranged sequentially. The base plate 321 is mounted to the support plate 31 via a support column 35, and a positioning groove 3231 is formed in the contoured support plate 323. A guide groove 3211 is formed on the base plate 321, and a claw body 331 extends into the guide groove 3211. An adjusting block 332 is slidably mounted in the guide groove 3211. An adjusting hole 3221 is provided through the partition plate 322, and the adjusting block 332 extends into the positioning groove 3231 through the adjusting hole 3221. The partition plate 322 is used to close the guide groove 3211 on the upper side of the base plate 321 to ensure that the adjusting block 332 moves stably and smoothly within the guide groove 3211. By designing the movable positioning plate 32 as a separate structure combining the base plate 321, the partition plate 322, and the contoured support plate 323, it is convenient for changing and replacing the design. The base plate 321, the partition plate 322 and the contour support plate 323 are detachably connected to each other by bolts or screws.

[0023] like Figure 4 As shown, a first spring 3212 is disposed within the guide groove 3211. The first spring 3212 acts on the adjusting block 332, causing the contoured sub-block 341 mounted on the adjusting block 332 to tend to move closer to the inner wall of the outer shell a. Here, the first spring 3212 is always in a compressed state to ensure the force exerted by the contoured sub-block 341 on the inner wall of the outer shell a. After welding is completed, the first driving member 33, i.e., the gripper cylinder, drives the adjusting block 332, causing the contoured sub-block 341 to disengage from the inner wall of the outer shell a. At this time, the first spring 3212 is further compressed.

[0024] Furthermore, a clearance notch 3232 is provided through the bottom of the positioning groove 3231, and the adjusting block 332 passes through the adjusting hole 3221 and the clearance notch 3232 in sequence into the positioning groove 3231.

[0025] like Figure 4As shown, a limiting step 3213 is provided on the inner wall of the guide groove 3211 to limit the adjustment block 332 in the direction where the contour block 341 approaches the inner wall of the outer shell a. This configuration can provide a limit position for the contour block 341 to move toward the inner wall of the outer shell a, so as to avoid overpressure.

[0026] like Figure 1 and Figure 2 As shown, the pressing assembly 4 includes a longitudinal frame plate 41 mounted on the frame 1. A sliding block movable plate 42 is adjustablely arranged on the longitudinal frame plate 41 along the longitudinal direction. A pressing head 424 is disposed on the top of the sliding block movable plate 42. The outer shell a of the cabin is located between the pressing head 424 and the movable positioning plate 32. The position of the pressing head 424 is adjusted by the sliding block movable plate 42 to facilitate the installation and removal of the outer shell a.

[0027] Furthermore, an adjusting seat plate 421 is disposed on the top of the sliding block 42, and an extension plate 423 is adjustablely mounted on the adjusting seat plate 421. The pressure head 424 is rotatably mounted on the extension plate 423; the rotation axis of the pressure head 424 relative to the extension plate 423 is collinear with the rotation axis of the clamping assembly 3. In this embodiment, the extension plate 423 is adjustablely mounted on the adjusting seat plate 421 in the horizontal direction via a slide table 422. The pressure head 424 is rotatably mounted on the extension plate 423 via a bearing. In use, after the pressure head 424 presses against the outer shell a of the cabin, when the rotating platform 2 drives the clamping assembly 3 to rotate, the pressure head 424 rotates synchronously with the outer shell a of the cabin, avoiding sliding friction between the pressure head 424 and the outer shell a of the cabin, thus ensuring that the outer shell a of the cabin is not worn.

[0028] In this embodiment, the sliding block 42 and the longitudinal frame 41 are slidably connected via a slide rail slider assembly, with the sliding block 42 positioned on the side of the longitudinal frame 41 facing the rotating machine platform 2. A second spring 43 is disposed between the machine frame 1 and the sliding block 42, acting on the sliding block 42 to give it a tendency to move towards the machine frame 1. Further, a second driving member 44 is disposed on the longitudinal frame 41, driving the sliding block 42 to move longitudinally upwards. Here, the second driving member 44 is positioned on the side of the longitudinal frame 41 away from the rotating machine platform 2. Optionally, the second driving member 44 may include, but is not limited to, a cylinder, a hydraulic cylinder, or an electric actuator.

[0029] In another embodiment, the slider movable plate 42 can also be longitudinally adjustablely mounted to the longitudinal frame plate 41 via a linear module (not shown in the figure). Specifically, the linear module is mounted to the longitudinal frame plate 41, the slider movable plate 42 is mounted on the linear module, and is driven by the linear module to move longitudinally.

[0030] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A fixture for welding the outer shell of an earphone housing, characterized in that, It includes a frame, a rotating platform, a clamping assembly, and a pressing assembly, wherein the rotating platform and the pressing assembly are both disposed on the frame, and the clamping assembly is assembled on the rotating platform and driven by the rotating platform to rotate. The clamping assembly includes a support plate, a movable positioning plate, a first driving member, and a contour block. The movable positioning plate is located between the support plate and the pressing assembly. The contour block is composed of multiple contour sub-blocks. A positioning groove is provided on the side of the movable positioning plate facing the pressing assembly. The outer shell of the cabin is inverted and disposed in the positioning groove, and is located between the movable positioning plate and the pressing assembly. The contour block is located in the positioning groove and extends into the outer shell of the cabin. The first driving member is used to drive the contour sub-block to move closer to or away from the inner wall of the outer shell of the cabin.

2. The fixture for welding the earphone housing shell according to claim 1, characterized in that, The first driving component is a gripper cylinder, and the gripper body of the gripper cylinder is connected to the contouring sub-block through an adjusting block, which extends into the positioning groove; The gripper cylinder is mounted on the support plate.

3. The fixture for welding the earphone housing shell according to claim 2, characterized in that, The movable positioning plate includes a base plate, a partition plate, and a contoured support plate arranged in sequence, wherein the base plate is assembled to the support plate by a support column, and the positioning groove is formed in the contoured support plate; The base plate has a guide groove, the claw extends into the guide groove, and the adjusting block is slidably assembled into the guide groove; the partition plate has an adjustment hole, and the adjusting block extends into the positioning groove through the adjustment hole.

4. The fixture for welding the earphone housing shell according to claim 3, characterized in that, A first spring is disposed in the guide groove. The first spring acts on the adjusting block so that the contoured sub-block assembled on the adjusting block has a tendency to move closer to the inner wall of the cabin shell.

5. The fixture for welding the earphone housing shell according to claim 3, characterized in that, The bottom of the positioning groove is provided with an avoidance notch, and the adjusting block passes through the adjusting hole and the avoidance notch in sequence into the positioning groove.

6. The fixture for welding the earphone housing shell according to claim 3, characterized in that, The inner wall of the guide groove is provided with a limiting step for limiting the adjustment block in the direction of the contoured sub-block near the inner wall of the cabin shell.

7. The fixture for welding the earphone housing shell according to claim 1, characterized in that, The pressing assembly includes a longitudinal frame plate disposed on the frame, a sliding movable plate adjustable along the longitudinal direction is disposed on the longitudinal frame plate, a pressing head is disposed on the top of the sliding movable plate, and the outer shell of the cabin is located between the pressing head and the movable positioning plate.

8. The fixture for welding the earphone housing shell according to claim 7, characterized in that, The top of the slider movable plate is provided with an adjustment seat plate, and an extension plate is adjustablely mounted on the adjustment seat plate. The pressure head is rotatably mounted on the extension plate. The axis of rotation of the pressure head relative to the extension plate is collinear with the axis of rotation of the clamping assembly.

9. The fixture for welding the earphone housing shell according to claim 7, characterized in that, The sliding block is slidably connected to the longitudinal frame plate. A second spring is disposed between the frame and the sliding block. The second spring acts on the sliding block so that the sliding block tends to move toward the frame.

10. The fixture for welding the earphone housing shell according to claim 9, characterized in that, The longitudinal frame plate is equipped with a second driving member, which is used to drive the slider movable plate to move upward longitudinally.

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