Paint spraying device for shell of head-mounted bone conduction earphone

Abstract

The utility model relates to the technical field of earphone production, in particular to a head bone conduction earphone shell paint spraying device which improves the movement frequency and flexibility of a dust removal brush and enables the dust removal process to be more efficient and thorough. Comprising a supporting table fixedly arranged on the ground; the conveying belt is mounted on the supporting table and used for conveying the earphone shells; the paint spraying chamber is fixedly arranged on the ground, covers the conveying belt and is used for spraying paint on the earphone shells conveyed by the conveying belt; the dust cleaning mechanism is arranged on the supporting table and used for cleaning dust on the surface of the earphone shell; the piece conveying mechanism is arranged on the supporting table and used for conveying the earphone shells to penetrate through the dust removing mechanism; the transferring mechanism is installed on the supporting table and used for transferring the earphone shells on the piece conveying mechanism to the conveying belt; the ash removing mechanism further comprises a driving disc, a driving shaft and a driving shaft, wherein the driving disc is rotationally arranged on the supporting table; the sweeping support plate is arranged on the support table in a sliding manner; and the linkage rod is arranged between the driving disc and the sweeping brush supporting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone production, in particular to a head-mounted bone conduction earphone shell painting device. Background Art

[0002] In the manufacturing process of bone conduction headphones, painting the headphone shell is a critical step in improving product aesthetics, enhancing durability, and providing user comfort. Traditionally, painting headphone shells relies on manual labor, including manually transporting the headphone shells to the paint booth, cleaning the surface dust, and then painting. This process is not only inefficient but also difficult to ensure consistent and high-quality painting.

[0003] To improve production efficiency and ensure painting quality, automated painting systems are becoming a mainstream choice within the industry. However, existing automated painting systems still have some shortcomings in the pre-treatment stage of headphone shells, particularly in surface dust removal. For example, some systems use simple cylinder or screw drive mechanisms to move the cleaning tool. While these mechanisms can achieve a certain degree of cleaning, their limited movement frequency and flexibility make them difficult to meet the high standards required for cleaning bone conduction headphone shells. This results in incomplete cleaning and low cleaning efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a head-mounted bone conduction headphone shell painting device which improves the movement frequency and flexibility of the cleaning brush, making the cleaning process more efficient and thorough.

[0005] The utility model discloses a head-mounted bone conduction earphone shell painting device, comprising:

[0006] A support platform, fixedly arranged on the ground;

[0007] A conveyor belt, mounted on a support platform, for conveying earphone shells;

[0008] The paint spraying room is fixed on the ground and covered on the conveyor belt, and is used to spray paint the earphone shells conveyed by the conveyor belt;

[0009] A dust cleaning mechanism is provided on the support platform and is used to clean dust on the surface of the earphone housing;

[0010] A feeding mechanism, provided on the supporting platform, for conveying the earphone shell through the dust cleaning mechanism;

[0011] A transfer mechanism, mounted on the support platform, is used to transfer the earphone shell on the delivery mechanism to the conveyor belt;

[0012] The dust cleaning mechanism also includes:

[0013] A driving disc is rotatably mounted on the support platform;

[0014] The sweeping brush support plate is slidably arranged on the support platform, and the sweeping brush support plate is arranged in an "L" shape;

[0015] A linkage rod is provided between the driving disc and the sweeping brush support plate, one end of the linkage rod is hinged to the top edge of the driving disc, and the other end of the linkage rod is hinged to the horizontal end surface of the sweeping brush support plate;

[0016] The dust cleaning brush is arranged on the sweeping brush support plate.

[0017] The paint spraying device for the housing of the bone conduction headphone of the utility model, and the dust cleaning mechanism also include:

[0018] The ash receiving hopper is arranged below the cleaning brush and is fixedly mounted on the support platform. An ash discharge port is provided at the bottom of the ash receiving hopper.

[0019] The ash discharge pipe is connected to the ash receiving hopper, and the output end of the ash discharge pipe is arranged below the support table.

[0020] In the utility model of the head-mounted bone conduction earphone shell painting device, the ash receiving hopper is arranged in a slope shape, and the ash discharge port of the ash receiving hopper is the lowest point.

[0021] The head-mounted bone conduction headphone shell painting device of the utility model further includes a delivery mechanism:

[0022] The bearing support is fixedly installed on the support platform;

[0023] The feeding tray is rotatably mounted on the bearing support;

[0024] Multiple fixtures are evenly arranged in a circle and installed on the feeding tray to fix the earphone shell;

[0025] The second motor is fixedly installed at the bottom end of the bearing support and is used to drive the feeding tray to rotate.

[0026] The utility model of the head-mounted bone conduction earphone shell painting device, the transfer mechanism also includes:

[0027] Transfer seat, fixedly installed on the support platform;

[0028] Two driving plates are both swingably arranged on the transfer seat, and the two driving plates swing synchronously;

[0029] A connecting plate, both ends of which are rotatably connected to the two driving plates;

[0030] The load-bearing frame is fixedly mounted on the connecting plate;

[0031] The clamping cylinder is fixedly mounted on the load-bearing frame, and two clamping claws are slidably provided at the bottom end of the clamping cylinder;

[0032] The guide wheel is rotatably mounted on the load-bearing frame;

[0033] The two limit frames are fixedly installed on the support platform, with a "U"-shaped groove on the top. The "U"-shaped groove of the limit frame is used to support the guide wheel;

[0034] The third motor is fixedly mounted on the transfer seat and is used for driving the driving plate.

[0035] In the shell painting device for a bone conduction headphone of the present invention, the top corners of the "U"-shaped groove of the limiting frame are set to be rounded.

[0036] The head-mounted bone conduction headphone shell painting device of the utility model further includes a support platform:

[0037] The dust collecting pipe is fixedly installed on the support platform, the input end of the dust collecting pipe is arranged on the side of the dust cleaning mechanism, and the input end of the dust collecting pipe is provided with an air suction hood.

[0038] In the utility model of the head-mounted bone conduction earphone shell painting device, a filter valve is fixedly installed at the output end of the dust collecting pipe.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] The high-frequency reciprocating sliding of the sweeping brush support plate improves the movement frequency and flexibility of the cleaning brush, making the cleaning process more efficient and thorough; the cylinder further enhances the vertical position adjustment capability of the cleaning brush, which can be precisely adjusted according to the different shapes and sizes of the headphone shell to ensure the consistency of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] Figure 1 It is a structural diagram of the utility model;

[0043] Figure 2 It is an enlarged structural diagram of the dust cleaning mechanism;

[0044] Figure 3 This is a schematic diagram of the enlarged structure of the ash hopper;

[0045] Figure 4 It is an enlarged structural diagram of the feeding mechanism;

[0046] Figure 5 It is a schematic diagram of the enlarged structure of the transfer mechanism;

[0047] Figure 6 This is a schematic diagram of the enlarged structure of the dust collecting tube;

[0048] Reference numerals in the accompanying drawings: 1. support platform; 11. dust collecting pipe; 12. filter valve; 2. conveyor belt; 3. spray booth; 4. dust cleaning mechanism; 41. drive plate; 42. sweeping brush support plate; 43. linkage rod; 44. cylinder; 45. dust cleaning brush; 46. slide plate; 47. first motor; 48. guide slide seat; 49. guide slide support plate; 4a. ash hopper; 4b. ash discharge pipe; 5. feeding mechanism; 51. bearing support; 52. feeding tray; 53. clamp; 54. second motor; 6. transfer mechanism; 61. transfer seat; 62. drive plate; 63. connecting plate; 64. load-bearing frame; 65. clamp cylinder; 66. guide wheel; 67. limit frame; 68. third motor; DETAILED DESCRIPTION

[0049] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] like Figures 1 to 6 As shown, the head-mounted bone conduction earphone shell painting device of the present invention includes:

[0051] A support platform 1 is fixedly arranged on the ground;

[0052] The conveyor belt 2 is installed on the support platform 1 and is used to convey the earphone shell;

[0053] The paint booth 3 is fixed on the ground and covered on the conveyor belt 2, and is used to paint the earphone shells conveyed by the conveyor belt 2. The conveyor belt 2 transports the cleaned earphone shells to the paint booth 3, and the paint booth 3 sprays the earphone shells conveyed therein;

[0054] The dust cleaning mechanism 4 is provided on the support platform 1 and is used to clean the dust on the surface of the earphone housing. If the dust on the surface of the earphone housing is not cleaned before painting, the paint adhesion effect on the earphone housing will be poor, the paint appearance will be poor, and in severe cases, the paint will fall off. Therefore, the earphone housing needs to be cleaned.

[0055] The feeding mechanism 5 is provided on the supporting platform 1 and is used to transport the earphone shell through the dust cleaning mechanism 4;

[0056] The transfer mechanism 6 is installed on the support platform 1 and is used to transfer the earphone shell on the delivery mechanism 5 to the conveyor belt 2;

[0057] When controlling the reciprocating sliding of the sweeping support plate 42, existing technologies such as cylinder direct drive or screw drive can be used. However, these mechanisms can only achieve a simple function of controlling the reciprocating motion of the sweeping support plate 42. Since the present device requires a higher frequency and more flexible control of the reciprocating motion of the sweeping support plate 42, in order to solve the above problem, the present device is provided with a more optimized dust cleaning mechanism 4, including:

[0058] The driving disk 41 is rotatably mounted on the support platform 1; a first motor 47 is fixedly mounted on the support platform 1, and a power output end of the first motor 47 is fixedly connected to the driving disk 41, and the first motor 47 drives the driving disk 41 to rotate;

[0059] The sweeping support plate 42 is slidably mounted on the support platform 1 and is configured in an L-shape. A guide slide 48 is fixedly mounted on the support platform 1, and a slide plate 46 is slidably mounted on the guide slide 48. The sweeping support plate 42 is fixedly mounted on the slide plate 46.

[0060] The linkage rod 43 is arranged between the driving disc 41 and the sweeping support plate 42. One end of the linkage rod 43 is hinged to the top edge of the driving disc 41, and the other end of the linkage rod 43 is hinged to the horizontal end surface of the sweeping support plate 42. When the driving disc 41 rotates, the end of the linkage rod 43 hinged to its top surface will make a circular motion with the driving disc 41. At the same time, the linkage rod 43 is hinged to the top edge of the driving disc 41 without interference. The other end of the linkage rod 43 is hinged to the sweeping support plate 42, and the sweeping support plate 42 is slidably arranged on the support platform 1. Therefore, the sweeping support plate 42 has a fixed movement direction. Under the transmission action of the linkage rod 43, the sweeping support plate 42 will slide back and forth along its movement direction.

[0061] The cylinder 44 is fixedly mounted on the sweeping support plate 42; a guide slide support plate 49 is slidably mounted on the cylinder 44, and the output end of the cylinder 44 is fixedly connected to the guide slide support plate 49;

[0062] The cleaning brush 45 is mounted on the cylinder 44, and the vertical position of the cleaning brush 45 is adjusted by the cylinder 44. The cleaning brush 45 is fixedly mounted on the guide slide support plate 49, and the cylinder 44 drives the guide slide support plate 49 to move up and down. When the guide slide support plate 49 moves up and down, it slides with the side end surface of the cylinder 44 to guide the guide slide support plate 49, thereby adjusting the height of the cleaning brush 45.

[0063] The working process and principle of the device are as follows: the earphone shell is first placed on the feeding mechanism 5; the feeding mechanism 5 is started to transport the earphone shell to the bottom of the cleaning mechanism 4; when the earphone shell reaches the specified position of the cleaning mechanism 4, the first motor 47 starts to work; the first motor 47 drives the driving disk 41 to rotate, and the rotation of the driving disk 41 is converted into a reciprocating sliding motion of the sweeping brush support plate 42 through the linkage rod 43; the sweeping brush support plate 42 slides back and forth along the path set by the guide slide seat 48 and the slide plate 46, and at the same time the cylinder 44 drives the guide slide support plate 49 and the cleaning brush 45 to move up and down to adapt to earphone shells of different heights; the cleaning brush 45 and the earphone The earphone shell contacts the surface of the shell, effectively removing dust and impurities on the surface; after cleaning is completed, the transfer mechanism 6 is started to transfer the earphone shell from the delivery mechanism 5 to the conveyor belt 2; the conveyor belt 2 transports the earphone shell to the paint spraying room 3; after the earphone shell enters the paint spraying room 3, the paint spraying device starts to work and paints the earphone shell; the high-frequency reciprocating sliding of the sweeping brush support plate 42 improves the movement frequency and flexibility of the cleaning brush, making the cleaning process more efficient and thorough; the cylinder 44 further enhances the vertical position adjustment ability of the cleaning brush, and can be precisely adjusted according to the different shapes and sizes of the earphone shell to ensure the consistency of the cleaning effect.

[0064] like Figures 2 to 3 As shown, the dust cleaning mechanism 4 also includes:

[0065] The ash hopper 4a is provided below the cleaning brush 45 and is fixedly mounted on the support platform 1. The bottom of the ash hopper 4a is provided with an ash discharge port. The ash hopper 4a is used to receive the dust swept off the earphone housing by the cleaning brush 45.

[0066] The ash discharge pipe 4b is connected to the ash receiving hopper 4a, and the output end of the ash discharge pipe 4b is set below the table surface of the support platform 1; it is connected to the external ash box to discharge dust into the ash box to prevent dust from escaping into the working environment and ensure the cleanliness of the working environment;

[0067] The working process and principle of the cleaning mechanism 4 are as follows: when the cleaning brush 45 cleans the surface of the earphone shell, the bristles on the cleaning brush 45 will contact and rub against the surface of the earphone shell, thereby brushing off the dust and impurities on the surface; the dust and impurities brushed off are affected by gravity and fall into the ash hopper 4a below; the connection between the ash hopper 4a and the ash discharge pipe 4b is sealed to prevent dust from escaping into the working environment during the discharge process; the ash discharge pipe 4b can ensure that the dust can smoothly flow from the ash hopper 4a through the ash discharge pipe 4b into the external ash box. The addition of the ash hopper 4a and the ash discharge pipe 4b not only improves the cleaning efficiency, but also ensures the cleanliness of the working environment.

[0068] like Figure 3As shown, the ash hopper 4a is set to a slope shape, and the ash discharge port of the ash hopper 4a is the lowest point; the ash hopper is designed to be sloped, which helps the dust to slide naturally under the action of gravity; the shape of the slope allows the dust to move in a clear direction; the ash discharge port is set at the lowest point of the ash hopper, which can ensure that all dust that slides into the ash hopper can be discharged smoothly; due to the action of gravity, the dust will move downward along the slope and eventually gather at the ash discharge port; when the cleaning brush sweeps on the earphone housing, the dust will be brushed down and fall into the ash hopper; due to the slope design of the ash hopper, the dust will slide along the slope toward the ash discharge port; when the dust gathers at the ash discharge port, it can be discharged through the connected ash discharge pipe.

[0069] like Figure 4 As shown, the delivery mechanism 5 also includes:

[0070] The bearing support 51 is fixedly mounted on the support platform 1;

[0071] The feeding tray 52 is rotatably mounted on the bearing support 51;

[0072] A plurality of clamps 53 are evenly arranged in a circle and mounted on the feeding tray 52 for fixing the earphone housing;

[0073] The second motor 54 is fixedly mounted on the bottom end of the bearing support 51 and is used to drive the feeding tray 52 to rotate;

[0074] The working process and principle of the feeding mechanism 5 are as follows: when the earphone shell needs to be transported, the earphone shell is first fixed in the clamp 53 on the feeding tray 52; then, the second motor 54 is started, and the second motor 54 drives the feeding tray 52 to rotate on the bearing support 51; as the feeding tray 52 rotates, the clamp 53 and the earphone shell fixed therein are continuously or intermittently transported to the cleaning mechanism for cleaning; and after the cleaning is completed, the cleaned earphone shell is transported to the transfer mechanism 6.

[0075] like Figure 5 As shown, the transfer mechanism 6 also includes:

[0076] The transfer seat 61 is fixedly mounted on the support platform 1;

[0077] Two driving plates 62 are both swingably arranged on the transfer seat 61, and the two driving plates 62 swing synchronously;

[0078] The connecting plate 63 has two ends which are rotatably connected to the two driving plates 62;

[0079] The load-bearing frame 64 is fixedly mounted on the connecting plate 63;

[0080] The clamping cylinder 65 is fixedly mounted on the load-bearing frame 64, and two clamping claws are slidably provided at the bottom end of the clamping cylinder 65;

[0081] The guide wheel 66 is rotatably mounted on the load-bearing frame 64;

[0082] Two limiting frames 67 are fixedly mounted on the support platform 1, and a "U"-shaped groove is provided on the top. The "U"-shaped groove of the limiting frame 67 is used to support the guide wheel 66;

[0083] The third motor 68 is fixedly mounted on the transfer base 61 and is used to drive the driving plate 62;

[0084] The working process and principle of the transfer mechanism 6 are as follows: when the delivery mechanism 5 transports the earphone shell to the designated position, the third motor 68 starts, driving the two drive plates 62 to swing synchronously; the swing of the drive plate 62 drives the load-bearing frame 64 to move through the connecting plate 63, so that the clamping claws of the clamping cylinder 65 are aligned with the earphone shell; the clamping cylinder 65 is actuated, the clamping claws are closed, and the earphone shell is clamped; after clamping the earphone shell, the third motor 68 continues to drive the drive plate 62 to swing, so that the guide wheel 66 swings from the limit frame 67 to another set of limit frames 67; when the earphone shell moves to the top of the conveyor belt 2, the clamping cylinder 65 is actuated, the clamping claws are opened, and the earphone shell is released onto the conveyor belt 2.

[0085] like Figure 5 As shown, the top corners of the "U"-shaped groove are set to be rounded; the rounded corner design allows the guide wheel 66 to transition more smoothly when sliding to the top of the "U"-shaped groove, reducing direct collision with the groove corners, thereby reducing friction and wear; the rounded corners help to maintain the stability of the guide wheel 66 in the "U"-shaped groove, preventing jumping or offset due to sharp corners; the rounded corner design also protects the guide wheel 66 and the limit frame 67, avoiding damage caused by collision.

[0086] like Figure 6 As shown, the support platform 1 also includes:

[0087] The dust collecting pipe 11 is fixedly installed on the support platform 1, and the input end of the dust collecting pipe 11 is arranged on the side of the cleaning mechanism 4, and an air suction hood is provided at the input end of the dust collecting pipe 11; while the cleaning mechanism 4 is working, the air suction hood on the dust collecting pipe 11 starts to work and generates suction; the air suction hood is located on the side of the cleaning mechanism 4, close to the working area of the sweeping brush support plate 42 and the cleaning brush 45; part of the dust brushed off and the flying dust generated by the cleaning operation are sucked into the dust collecting pipe 11 under the suction of the air suction hood; it can effectively capture the dust brushed off and the flying dust generated by the cleaning operation, thereby maintaining the cleanliness of the working environment.

[0088] like Figure 6As shown, a filter valve 12 is fixedly installed at the output end of the dust collecting pipe 11; the filter valve 12 is connected to an external suction fan to provide suction for the dust collecting pipe 11, and absorb the dust released during the cleaning process into the filter valve 12; after the dust enters the dust collecting pipe 11, it is transported to the filter valve 12; the filter valve 12 intercepts the dust particles to prevent them from entering the suction fan or being discharged into the atmosphere; the clean air filtered by the filter valve 12 is discharged into the atmosphere by the suction fan to ensure the cleanliness of the working environment.

[0089] The head-mounted bone conduction earphone shell painting device of the present invention, when working, installs the earphone shells to be painted one by one on the clamp 53 of the feeding mechanism 5; the second motor 54 is started to drive the feeding tray 52 to rotate, and the clamps 53 with the earphone shells are sent one by one to the working area of the cleaning mechanism 4; when the clamp 53 and the earphone shells on it reach the predetermined position, the feeding tray 52 stops rotating and waits for the cleaning operation; the first motor 47 is started to drive the driving disk 41 to rotate; one end of the linkage rod 43 is connected to the driving disk 41; The top edge of the disc 41 is hinged, and the other end is hinged to the horizontal end surface of the sweeping brush support plate 42; as the driving disc 41 rotates, the linkage rod 43 drives the sweeping brush support plate 42 to slide back and forth on the support platform 1; at the same time, the cylinder 44 works to drive the guide sliding support plate 49 and the cleaning brush 45 to move up and down to adapt to the height and shape of different earphone shells; the cleaning brush 45 brushes on the surface of the earphone shell to remove dust; the dust swept by the cleaning brush 45 falls into the dust hopper 4a and is discharged to the external ash box through the ash discharge pipe 4b to prevent Dust escapes into the working environment; the dust collecting pipe 11 and the filter valve 12 cooperate with the external suction fan to further collect the dust that may escape during the cleaning process, ensuring the cleanliness of the working environment; when the earphone shell is cleaned, the feeding tray 52 continues to rotate and sends the next earphone shell to be processed to the cleaning mechanism 4; the third motor 68 of the transfer mechanism 6 is started, driving the two drive plates 62 to swing synchronously; the connecting plate 63 moves with the swing of the drive plate 62, driving the load-bearing frame 64, the clamping cylinder 65 and the clamping claw They move together to the top of the cleaned earphone shell; the clamp cylinder 65 works to drive the two clamps to clamp the earphone shell; then, the transfer mechanism 6 slides in the "U"-shaped groove of the limit frame 67 through the guide wheel 66 to transfer the earphone shell to the conveyor belt 2; the conveyor belt 2 starts to transport the earphone shell from the transfer mechanism 6 to the paint booth 3; the paint spraying device in the paint booth 3 starts to paint the earphone shell; after the painting is completed, the conveyor belt 2 continues to transport the earphone shell out of the paint booth 3, completing the entire painting process.

[0090] The installation method, connection method or setting method of the head-mounted bone conduction earphone shell painting device of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A head-mounted bone conduction headphone shell painting device, characterized in that: include: A support platform, fixedly arranged on the ground; A conveyor belt, mounted on the support platform, for conveying earphone shells; a paint spraying room fixedly arranged on the ground and covering the conveyor belt, for spraying paint on the earphone shells conveyed by the conveyor belt; A dust cleaning mechanism, disposed on the support platform, for cleaning dust from the surface of the earphone housing; A feeding mechanism, disposed on the support platform, for transporting the earphone housing through the dust cleaning mechanism; A transfer mechanism, mounted on the support platform, for transferring the earphone shell on the delivery mechanism to the conveyor belt; The dust cleaning mechanism further comprises: A driving disk, rotatably disposed on the support platform; A sweeping support plate is slidably arranged on the support platform, and the sweeping support plate is arranged in an "L" shape; A linkage rod is provided between the driving disc and the sweeping brush support plate, one end of the linkage rod is hinged to the top edge of the driving disc, and the other end of the linkage rod is hinged to the horizontal end surface of the sweeping brush support plate; A dust cleaning brush is arranged on the sweeping brush support plate.

2. The head-mounted bone conduction earphone shell painting device according to claim 1, characterized in that: The dust cleaning mechanism also includes: An ash receiving hopper is provided below the cleaning brush and is fixedly mounted on the support platform, with an ash discharge port provided at the bottom of the ash receiving hopper; An ash discharge pipe is connected to the ash receiving hopper, and an output end of the ash discharge pipe is arranged below the support platform surface.

3. The head-mounted bone conduction earphone shell painting device according to claim 2, characterized in that: The ash receiving hopper is arranged in a slope shape, and the ash discharge port of the ash receiving hopper is the lowest point.

4. The head-mounted bone conduction earphone shell painting device according to claim 1, characterized in that: The delivery mechanism further includes: A bearing support, fixedly mounted on the support platform; A feeding tray is rotatably mounted on the bearing support; A plurality of fixtures are evenly arranged in a circle and mounted on the feeding tray, for fixing the earphone housing; The second motor is fixedly mounted on the bottom end of the bearing support and is used to drive the feeding tray to rotate.

5. The head-mounted bone conduction earphone shell painting device according to claim 1, characterized in that: The transfer mechanism also includes: A transfer seat, fixedly mounted on the support platform; Two driving plates are both swingably arranged on the transfer seat, and the two driving plates swing synchronously; A connecting plate, both ends of which are rotatably connected to the two driving plates; A load-bearing frame, fixedly mounted on the connecting plate; A clamping cylinder is fixedly mounted on the load-bearing frame, and two clamping claws are slidably provided at the bottom end of the clamping cylinder; A guide wheel is rotatably mounted on the load-bearing frame; Two limiting frames are fixedly mounted on the support platform, and a "U"-shaped groove is provided on the top of the limiting frame. The "U"-shaped groove of the limiting frame is used to support the guide wheel; The third motor is fixedly mounted on the transfer seat and is used to drive the driving plate.

6. The head-mounted bone conduction earphone shell painting device according to claim 5, characterized in that: The top corners of the "U"-shaped groove of the limiting frame are set to be rounded.

7. The head-mounted bone conduction earphone shell painting device according to claim 1, characterized in that: The support platform also includes: The dust collecting pipe is fixedly mounted on the support platform, the input end of the dust collecting pipe is arranged on the side of the dust cleaning mechanism, and the input end of the dust collecting pipe is provided with an air suction hood.

8. The head-mounted bone conduction earphone shell painting device according to claim 7, characterized in that: A filter valve is fixedly installed at the output end of the dust collecting pipe.

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