Screen printing device for earphone shell processing
By designing mechanical drive components for the ink supply nozzle and the doctor blade, the problem of uneven ink application on irregular headphone shells was solved, enabling uniform printing and efficient production of headphone shells.
Patent Information
- Application Number
- CN202520353286.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Existing technologies struggle to achieve uniform ink application on irregular headphone shells, and traditional manual brushing methods are inefficient and cannot meet the demands of large-scale standardized production.
A screen printing device including an ink supply nozzle and a scraper brush was designed. The mechanical drive component ensures uniform ink spraying and scraping, and the combination of a balance pad and a positioning stage enables stable positioning and precise ink application of the headphone shell.
This improved the uniformity of ink application and printing precision on the headphone shell, meeting the needs of large-scale standardized production, avoiding ink accumulation or insufficient ink, and improving production efficiency.
Smart Images
Figure CN223877704U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to screen printing processing technical field, specifically is a screen printing device for earphone shell processing. BACKGROUND
[0002] In today's electronic equipment manufacturing industry, earphones as common audio equipment, its appearance and quality are concerned. The processing technology of earphone shell directly affects the overall quality and market competitiveness of earphone. As an important surface decoration technology, screen printing is widely used in pattern, logo printing and other links of earphone shell.
[0003] With the development of science and technology, the design of earphone is increasingly diversified, and the shape of earphone shell is also more and more irregular. When screen printing operation is carried out on such irregular earphone shell, the prior art exposes many problems. Especially in the uniformity of ink application, it is difficult to achieve ideal effect. The traditional screen printing ink application method cannot guarantee that the ink is evenly covered on the surface of the workpiece when facing the complex curved surface and structure of the earphone shell, resulting in that the printed pattern color is not uniform, affecting the appearance and product quality. In addition, part of the earphone shell has a large protruding structure. The traditional manual brushing ink application method not only has low efficiency, but also is difficult to accurately control the ink amount on the protruding part due to the limitation of manual operation. Uneven force is easy to cause ink accumulation or insufficient ink application, further affecting the quality of screen printing, and manual operation is also difficult to realize large-scale, standardized production demand. Therefore, a screen printing device for earphone shell processing is needed to solve the above problems. SUMMARY
[0004] The utility model aims at providing a screen printing device for earphone shell processing, which has the advantages of ensuring uniform ink application and efficiently and accurately applying ink on the protruding part of the earphone shell, solving the problems of the prior art that cannot guarantee uniform ink application when screen printing operation is carried out on irregular earphone shell, and the traditional manual brushing ink application method that cannot control the ink amount, has low efficiency and cannot meet the large-scale standardized production demand when facing the protruding structure of the earphone shell.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a screen printing device for earphone shell processing, comprising a base, a printing assembly is rotatably installed on the base, the base comprises a chassis, a driven wheel is rotatably installed on the rear end of the upper end face of the chassis;The printing assembly comprises a top frame, a driving assembly is arranged on the top frame, a brushing assembly is drivingly installed at the front end of the driving assembly;The brushing assembly comprises a connecting frame, an ink scraping brush is fixedly installed on the top of the connecting frame, a guide frame is fixedly installed on the front end of the connecting frame, an ink supply nozzle is fixedly installed on the front end of the guide frame through a clamping frame, and the bottom height of the ink supply nozzle is higher than that of the ink scraping brush.
[0006] Preferably, the four corners of the chassis are respectively fixedly installed with balance pads, and the upper end face of the chassis is fixedly installed with a placement table at the front end, and the upper end face of the placement table is positioned and placed with a processing piece.
[0007] The balance pads at the four corners of the chassis in the design can ensure stable placement of the device and avoid affecting the printing quality due to shaking of the device during silk-screen printing. The placement table fixedly installed at the front end of the upper end face of the chassis provides a stable positioning and placement area for the processing piece, ensuring the consistency of the placement position of the processing piece each time, which is conducive to realizing standardized silk-screen printing operation and improving the printing precision.
[0008] Preferably, the upper end face of the top frame is fixedly installed with a sliding frame at the front end, and a silk screen printing plate is fixedly installed at the bottom of the top frame below the sliding frame, and the upper end face of the silk screen printing plate is in contact with the bottom of the ink scraping brush but is not fixedly connected.
[0009] The design of the sliding frame fixedly installed at the front end of the upper end face of the top frame in the design makes the brush coating assembly have stable guidance during movement, ensuring the linearity and stability of the movement of the ink scraping brush on the silk screen printing plate. The silk screen printing plate is in contact with the ink scraping brush but is not fixedly connected, which not only ensures that the ink scraping brush can effectively scrape the ink over the silk screen printing plate, but also facilitates operation when the silk screen printing plate needs to be replaced, improving the practicality and maintenance convenience of the device.
[0010] Preferably, the driving assembly comprises a stepping motor, a fixed shaft wheel is drivingly installed on the stepping motor, the outer wall of the fixed shaft wheel is in contact with a driven wheel but is not fixedly connected, and a connecting rod assembly is drivingly installed on the front face of the fixed shaft wheel.
[0011] The stepping motor in the driving assembly in the design can accurately control the rotation angle and speed, providing a stable and adjustable power source for the movement of the entire printing assembly. The fixed shaft wheel drivingly installed on the stepping motor is in contact with the driven wheel rotatably installed at the rear end of the upper end face of the chassis, enabling the top frame to open and close in a set manner, ensuring that the processing piece is in close contact with the silk screen printing plate, laying a foundation for good silk-screen printing effect. At the same time, the connecting rod assembly drivingly installed on the front face of the fixed shaft wheel cleverly converts the rotation of the motor into the reciprocating motion of the brush coating assembly, meeting the action requirements of ink scraping during silk-screen printing.
[0012] Preferably, one end of the connecting rod assembly away from the fixed shaft wheel is rotatably connected with a connecting frame.
[0013] In the design, one end of the connecting rod assembly away from the fixed shaft wheel is rotatably connected with the connecting frame, enabling the connecting frame to flexibly follow the motion trail of the connecting rod assembly during movement, ensuring that the ink scraping brush performs effective ink scraping action on the silk screen printing plate, ensuring that the ink is uniformly printed on the processing piece through the silk screen printing plate, and improving the uniformity of ink application and the printing quality.
[0014] Preferably, the guide frame is slidingly mounted above the top frame by a sliding frame, and the ink scraping brush and the ink supply nozzle are both perpendicular to the upper end surface of the screen printing plate.
[0015] In the design, the guide frame slides above the top frame by a sliding frame, and the ink scraping brush and the ink supply nozzle are both perpendicular to the upper end surface of the screen printing plate, which ensures the accuracy and stability of the position of the ink supply nozzle when spraying ink, so that the ink can be uniformly sprayed onto the screen printing plate. At the same time, it also ensures that the ink scraping brush always acts vertically on the screen printing plate during the ink scraping process, further improving the uniformity of the ink and the printing effect.
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] In the utility model, the ink supply nozzle first uniformly sprays ink onto the screen printing plate, and then the ink scraping brush scrapes the ink, which realizes the uniform distribution of the ink on the screen printing plate by the way of spraying first and then scraping, and lays a foundation for subsequent uniform printing on the earphone shell workpiece. The guide frame slides above the top frame by a sliding frame, and the ink scraping brush and the ink supply nozzle are both perpendicular to the upper end surface of the screen printing plate. In this way, the position of the ink supply nozzle when spraying ink is accurate and stable, and the ink is uniformly sprayed onto the screen printing plate. At the same time, the ink scraping brush scrapes the ink vertically, further improving the uniformity of the ink. The placement table provides a stable positioning and placement area for the workpiece, ensures that the placement position of the workpiece is consistent each time, is favorable for standardized screen printing operation, thereby improving the printing precision, and makes the ink uniform on different workpieces.
[0018] The stepping motor in the driving assembly accurately controls the rotation angle and speed, and provides stable and adjustable power for the movement of the printing assembly. The fixed shaft wheel cooperates with the driven wheel to open and close the top frame, ensuring that the workpiece is in close contact with the screen printing plate. At the same time, the connecting rod assembly converts the rotation of the motor into the reciprocating motion of the brush coating assembly. Compared with manual operation, this mechanical driving mode can more efficiently and accurately control the motion of the brush coating assembly, and accurately apply ink to the convex part of the earphone shell. The ink supply nozzle is fixed at the front end of the guide frame by the clamping frame, and the position is relatively fixed and accurate. When facing the convex structure of the earphone shell, the ink supply position and amount can be more accurately controlled, avoiding the accumulation of ink or insufficient ink, and improving the ink quality of the convex part. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a front view structural schematic diagram of the utility model;
[0020] Figure 2 It is a base structure schematic diagram of the utility model;
[0021] Figure 3 It is a printing assembly structure schematic diagram of the utility model;
[0022] Figure 4The utility model discloses a driving assembly structure schematic view.
[0023] Figure 5 The utility model discloses a brush coating assembly structure schematic view.
[0024] In the drawing: 1, base; 11, bottom frame; 12, driven wheel; 13, placing table; 14, balance pad; 2, printing assembly; 21, top frame; 211, sliding frame; 22, silk screen printing plate; 23, brush coating assembly; 231, connecting frame; 232, ink scraping brush; 233, guide frame; 234, clamping frame; 235, ink supply nozzle; 24, driving assembly; 241, stepping motor; 242, fixed shaft wheel; 243, connecting rod assembly. DETAILED DESCRIPTION
[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of protection of the utility model.
[0026] EMBODIMENT
[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 4 indicated, an embodiment provided by the utility model: a silk screen printing device for earphone shell processing, including base 1, the printing assembly 2 is rotatably installed on base 1, and base 1 includes bottom frame 11, and the rear end of the upper end surface of bottom frame 11 is rotatably installed with driven wheel 12;The printing assembly 2 includes top frame 21, and top frame 21 is provided with driving assembly 24, and driving assembly 24 is rotatably installed with brush coating assembly 23 in front end;Brush coating assembly 23 includes connecting frame 231, and the top of connecting frame 231 is fixedly installed with ink scraping brush 232, and the front end of connecting frame 231 is fixedly installed with guide frame 233, and the front end of guide frame 233 is fixedly installed with ink supply nozzle 235 through clamping frame 234, and the bottom height of ink supply nozzle 235 is higher than the bottom height of ink scraping brush 232.
[0028] Specifically, the ink supply nozzle 235 first uniformly sprays ink on the screen printing plate 22, and then the ink scraping brush 232 uniformly scrapes the ink. In this way of first spraying and then scraping, the ink is initially uniformly distributed on the screen printing plate 22, laying a foundation for subsequent uniform printing on the earphone shell workpiece. The guide frame 233 slides above the top frame 21 through the slide frame 211, and the ink scraping brush 232 and the ink supply nozzle 235 are both perpendicular to the upper end surface of the screen printing plate 22. In this way, the ink supply nozzle 235 can accurately and stably spray ink onto the screen printing plate 22, and the ink scraping brush 232 can further improve the uniformity of the ink.
[0029] The stepping motor 241 in the driving assembly 24 accurately controls the rotation angle and speed, providing stable and adjustable power for the movement of the printing assembly 2. The fixed shaft wheel 242 cooperates with the driven wheel 12 to open and close the top frame 21, ensuring that the workpiece is in close contact with the screen printing plate 22. At the same time, the connecting rod assembly 243 converts the rotation of the motor into the reciprocating motion of the brush coating assembly 23. Compared with manual operation, this mechanical driving method can more efficiently and accurately control the motion of the brush coating assembly 23, and accurately apply ink to the protruding parts of the earphone shell. The ink supply nozzle 235 is fixed to the front end of the guide frame 233 through the clamping frame 234, and the position is relatively fixed and accurate. When facing the protruding structure of the earphone shell, it can more accurately control the ink supply position and quantity, avoid the accumulation of ink or insufficient ink, and improve the ink quality of the protruding parts.
[0030] Further, the balance pads 14 are fixedly installed at the four corners of the bottom frame 11, and the placement table 13 is fixedly installed at the front end of the upper end surface of the bottom frame 11. The workpiece is positioned and placed on the upper end surface of the placement table 13.
[0031] The balance pads 14 at the four corners of the bottom frame 11 in the design can ensure that the device is placed stably, avoiding the influence of device shaking on the printing quality during the silk-screen printing process. The placement table 13 fixedly installed at the front end of the upper end surface of the bottom frame 11 provides a stable positioning and placement area for the workpiece, ensuring the consistency of the placement position of the workpiece each time, which is conducive to realizing standardized silk-screen printing operation and improving printing precision.
[0032] Further, the slide frame 211 is fixedly installed at the front end of the upper end surface of the top frame 21, and the screen printing plate 22 is fixedly installed at the bottom of the top frame 21 below the slide frame 211. The upper end surface of the screen printing plate 22 is in contact with but not fixedly connected to the bottom of the ink scraping brush 232.
[0033] The design of the slide 211 fixedly installed on the front end of the top frame 21 in the design makes the brush coating assembly 23 have stable guidance during movement, and guarantees the linearity and stability of the ink scraping brush 232 moving on the screen printing plate 22. The screen printing plate 22 is in contact with the ink scraping brush 232 but is not fixedly connected, which not only guarantees that the ink scraping brush 232 can effectively scrape the ink over the screen printing plate 22, but also facilitates the operation when the screen printing plate 22 needs to be replaced, thereby improving the practicability and maintenance convenience of the device.
[0034] Further, the driving assembly 24 comprises a stepping motor 241, a fixed shaft wheel 242 is drivingly installed on the stepping motor 241, the outer wall of the fixed shaft wheel 242 is in contact with but not fixedly connected with the driven wheel 12, and a connecting rod assembly 243 is drivingly installed on the front face of the fixed shaft wheel 242.
[0035] In the design, the stepping motor 241 in the driving assembly 24 can accurately control the rotation angle and speed, and provides stable and adjustable power source for the movement of the entire printing assembly 2. The fixed shaft wheel 242 drivingly installed on the stepping motor 241 is in contact with the driven wheel 12 rotatably installed on the rear end of the upper end face of the bottom frame 11, so that the top frame 21 can be opened and closed according to the set mode, and ensures that the workpiece is in close contact with the screen printing plate 22, thereby laying a foundation for good silk printing effect. At the same time, the connecting rod assembly 243 drivingly installed on the front face of the fixed shaft wheel 242 skillfully converts the rotation of the motor into the reciprocating motion of the brush coating assembly 23, thereby meeting the action requirements of the ink scraping during the silk printing process.
[0036] Further, one end of the connecting rod assembly 243 away from the fixed shaft wheel 242 is rotatably connected with the connecting frame 231.
[0037] In the design, one end of the connecting rod assembly 243 away from the fixed shaft wheel 242 is rotatably connected with the connecting frame 231, so that the connecting frame 231 can flexibly follow the motion track of the connecting rod assembly 243 during movement, and guarantees that the ink scraping brush 232 performs effective ink scraping action on the screen printing plate 22, thereby ensuring that the ink is uniformly printed on the workpiece through the screen printing plate 22, and improving the uniformity of the ink application and the printing quality.
[0038] Further, the guide frame 233 is slidingly installed above the top frame 21 through the slide 211, and the ink scraping brush 232 and the ink supply nozzle 235 are both perpendicular to the upper end face of the screen printing plate 22 through the guide frame 233.
[0039] The guiding frame 233 slides above the top frame 21 through the slide frame 211, and the ink scraping brush 232 and the ink supply nozzle 235 are both perpendicular to the upper end surface of the screen printing plate 22, which ensures the accuracy and stability of the position of the ink supply nozzle 235 when spraying ink, so that the ink can be uniformly sprayed on the screen printing plate 22. At the same time, it also ensures that the ink scraping brush 232 always acts vertically on the screen printing plate 22 during the ink scraping process, further improving the uniformity of the ink application and the printing effect.
[0040] When the utility model is used, whether each component of the inspection device is installed firmly is checked, and it is ensured that the balance pad 14 stably supports the chassis 11. The earphone shell workpiece to be silk-screen printed is positioned and placed on the placement table 13. It is confirmed that the screen printing plate 22 has been correctly installed at the bottom of the top frame 21, and the upper end surface thereof is in contact with the bottom of the ink scraping brush 232. The ink supply nozzle 235 connection is checked, and it is ensured that the ink supply is sufficient.
[0041] The step motor 241 is started, and the step motor 241 drives the fixed shaft wheel 242 to rotate. The outer wall of the fixed shaft wheel 242 is in contact with the driven wheel 12, and the driven wheel 12 starts to rotate due to the friction force, which makes the top frame 21 and the chassis 11 open and close through the rotating connection, so that the screen printing plate 22 can be in contact with the placement table 13 to the maximum extent, and then the workpiece is in close contact with the screen printing plate 22, which prepares for the subsequent silk-screen printing operation. At the same time, the connecting rod assembly 243 installed on the front face of the fixed shaft wheel 242 starts to move, and the end of the connecting rod assembly 243 away from the fixed shaft wheel 242 is rotationally connected with the connecting frame 231, so that the connecting frame 231 moves. The ink scraping brush 232 at the top of the connecting frame 231 moves on the upper end surface of the screen printing plate 22, and at the same time, the guiding frame 233 slides above the top frame 21 through the slide frame 211, so that the ink scraping brush 232 and the ink supply nozzle 235 are both perpendicular to the upper end surface of the screen printing plate 22. The ink supply nozzle 235 is fixedly installed at the front end of the guiding frame 233 through the clamping frame 234, and the bottom height of the ink supply nozzle 235 is higher than the bottom height of the ink scraping brush 232. The ink supply nozzle 235 starts to uniformly spray ink on the screen printing plate 22. The ink scraping brush 232 uniformly scrapes the ink on the screen printing plate 22, and the ink is printed on the lower earphone shell workpiece through the mesh of the screen printing plate 22.
[0042] When the printing assembly 2 completes one rotation, that is, one silk-screen printing operation on the earphone shell workpiece is completed. At this time, the step motor 241 is turned off, the workpiece on which the silk-screen printing is completed is taken out, and a new earphone shell to be processed is replaced, and the next round of silk-screen printing operation is repeated.
[0043] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.
Claims
1. A silk-screen device for earphone shell processing, comprising a base (1), a printing assembly (2) is rotatably installed on the base (1), characterized in that: the base (1) comprises a chassis (11), a driven wheel (12) is rotatably installed on the rear end of the upper end face of the chassis (11); the printing assembly (2) comprises a top frame (21), a driving assembly (24) is arranged on the top frame (21), a brush coating assembly (23) is drivingly installed on the front end of the driving assembly (24); the brush coating assembly (23) comprises a connecting frame (231), an ink scraping brush (232) is fixedly installed on the top of the connecting frame (231), a guide frame (233) is fixedly installed on the front end of the connecting frame (231), an ink supply nozzle (235) is fixedly installed on the front end of the guide frame (233) through a clamping frame (234), and the bottom of the ink supply nozzle (235) is higher than the bottom of the ink scraping brush (232).
2. The silk printing device for earphone shell processing according to claim 1, characterized in that, Balance pads (14) are fixedly installed at the four corners of the chassis (11), a placement table (13) is fixedly installed on the front end of the upper end face of the chassis (11), and the processing piece is positioned and placed on the upper end face of the placement table (13).
3. The silk printing device for earphone shell processing according to claim 1, characterized in that, A sliding frame (211) is fixedly installed on the front end of the upper end face of the top frame (21), a silk screen (22) is fixedly installed on the bottom of the top frame (21) below the sliding frame (211), and the upper end face of the silk screen (22) is in contact with but not fixedly connected with the bottom of the ink scraping brush (232).
4. The silk printing device for earphone shell processing according to claim 1, characterized in that, The driving assembly (24) comprises a stepping motor (241), a fixed shaft wheel (242) is drivingly installed on the stepping motor (241), the outer wall of the fixed shaft wheel (242) is in contact with but not fixedly connected with the driven wheel (12), and the front face of the fixed shaft wheel (242) is drivingly installed with a connecting rod assembly (243).
5. The silk printing device for earphone shell processing according to claim 4, characterized in that, The connecting rod assembly (243) is rotatably connected with the connecting frame (231) at the end away from the fixed shaft wheel (242).
6. The silk printing device for earphone shell processing according to claim 1, characterized in that, The guide frame (233) is slidingly installed above the top frame (21) through the sliding frame (211), and the ink scraping brush (232) and the ink supply nozzle (235) are both kept perpendicular to the upper end face of the silk screen (22) through the guide frame (233).