A kind of grinding device before welding of earphone plug

Abstract

The present invention relates to the field of earphone polishing technology, and more specifically, to a device for polishing earphone plugs before welding. The polishing device includes a frame and a polishing mechanism, a transmission mechanism, a clamping mechanism and a storage mechanism arranged on the frame. The transmission mechanism drives the clamping mechanism to move to the polishing mechanism area to perform a polishing operation, and finally falls into the storage mechanism for collection. The device can polish multiple earphone plugs at the same time, and realize automatic polishing and automatic unloading of the solder joint positions of the earphone plugs before welding by manual loading. Workers only need to complete the loading work during the operation, and the loading method has been simplified and optimized. The present invention utilizes a clamping mechanism for clamping to replace manual hand-holding, and adopts PLC centralized control for polishing and unloading, realizing an integrated and automated processing process, improving production efficiency and processing accuracy, reducing the labor intensity of workers, and reducing processing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of earphone polishing, and more specifically, to an earphone plug pre-welding polishing device. Background Art

[0002] At present, most of the existing headphone plugs are manually polished with a handheld grinder before welding, and the other metals and oxide layers of the plug's electroplating layer are polished off one by one to prepare for the next step of welding the headphone wire. Since the mobile phone headphone plug is small in size and inconvenient to hold, the manual polishing position is unstable and the polishing depth is difficult to control, which is not only inefficient and dangerous, but also has a high defective rate. Therefore, it is of great significance to design a polishing device with higher processing efficiency. Summary of the invention

[0003] In order to overcome the defects of the prior art described above, the present invention provides a device for polishing a headphone plug before welding, so as to realize an integrated and automated processing process, improve production efficiency and processing accuracy, reduce the labor intensity of workers, and reduce processing costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A pre-welding grinding device for a headphone plug comprises a frame and a grinding mechanism, a transmission mechanism and a clamping mechanism arranged on the frame, the grinding mechanism comprising a first motor, a transmission assembly, a horizontal wheel shaft and a grinding wheel, the grinding wheel being arranged on the wheel shaft and rotating with the horizontal wheel shaft, the first motor being connected to the horizontal wheel shaft through the transmission assembly, driving the horizontal wheel shaft and the grinding wheel to rotate and grind; the transmission mechanism comprises a second motor, a horizontal screw and a horizontal guide rod, the horizontal screw is threadedly connected to the clamping mechanism, the horizontal guide rod is slidably connected to the clamping mechanism, the horizontal screw, the horizontal guide rod and the horizontal wheel shaft are at a right angle; the second motor is linked to the horizontal screw to drive the clamping mechanism to move along the horizontal guide rod; the clamping mechanism comprises an outer frame, an inner frame and a clamping cover plate, the horizontal sides of the outer frame are respectively connected to the horizontal screw and the horizontal guide rod, the inner frame is assembled on the outer frame, the clamping cover plate is arranged on the inner frame and is used to clamp the headphone plug; the transmission mechanism drives the clamping mechanism to move to the grinding mechanism area to perform a grinding operation. Among them, the clamping cover plate can clamp and process multiple headphone plugs at the same time, which effectively improves work efficiency compared with traditional grinding methods.

[0006] Preferably, the clamping mechanism further includes a third motor, a motor bracket and a connecting shaft. The third motor is fixed to the outer frame through the motor bracket. The output end of the third motor is linked to the connecting shaft, and the connecting shaft is connected and fixed to the inner frame. The third motor drives the connecting shaft to drive the inner frame to rotate in the vertical direction. The third motor is mainly used to control the up and down rotation of the clamping cover plate to facilitate the loading, grinding and unloading of the headphone plug.

[0007] Preferably, the clamping cover plate cooperates with the inner frame to form a plurality of jacks for placing headphone plugs, the clamping cover plate is stacked on the inner frame, and a spring for elastic tensioning is arranged between the clamping cover plate and the inner frame. The inner frame is stepped, the clamping cover plate covers the stepped surface and cooperates with the stepped surface to form a jack, the clamping cover plate and the inner frame are tightened by the spring to cooperate to clamp the headphone plug, and the inner wall of the jack is provided with anti-slip texture.

[0008] Preferably, a hinge is connected between the clamping cover plate and the inner frame, and an oblique opening is left on the side of the clamping cover plate away from the insertion hole; the inner frame is provided with a push rod, the movable end of the push rod points to the oblique opening of the clamping cover plate, and the push rod pushes the oblique opening to clamp the clamping cover plate. The push rod can be an electric push rod or a gas rod, and the push rod head is an oblique cone structure, which is mainly used to push open the clamping gap between the upper and lower cover plates to realize the function of automatic unloading.

[0009] Preferably, the outer frame is provided with a wheel groove for avoiding the grinding wheel, and the wheel groove is close to one side of the insertion hole. When the clamping mechanism moves toward the grinding mechanism for grinding, the wheel groove mainly avoids the collision between the grinding wheel and the outer frame.

[0010] Preferably, the grinding mechanism further comprises a support frame, which is detachably fixed to the frame, and the horizontal wheel shaft is rotatably fixed to the support frame and moves with the support frame. The support frame is horizontally arranged on the frame and is detachably fixed to the frame so as to adjust the position of the grinding wheel up and down and control the grinding position and depth.

[0011] Preferably, the transmission assembly is a pulley transmission structure, and the grinding wheel is a grinding wheel. The pulley transmission structure is an existing common transmission structure and will not be described in detail here. The first motor drives the horizontal wheel shaft to rotate through the pulley transmission structure, thereby rotating the grinding wheel for grinding.

[0012] Preferably, a storage mechanism is further included, and the storage mechanism includes a plurality of storage boxes, each of which is arranged at the bottom of the clamping mechanism and the polishing mechanism, and is used to collect the headphone plug and polishing waste. The storage boxes are respectively set corresponding to the processing steps, some are used to collect the headphone plug after polishing, and some are used to collect the polishing waste.

[0013] Preferably, dustproof baffles are provided between the storage boxes.

[0014] Preferably, the grinding mechanism, transmission mechanism and clamping mechanism are connected to PLC and are centrally controlled by PLC; the frame is provided with a PLC control panel. PLC controls each mechanism to coordinate grinding and provide automated production.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention discloses a pre-welding grinding device for headphone plugs, which utilizes a clamping mechanism for clamping to replace manual holding, and adopts PLC centralized control for grinding and unloading, thereby realizing an integrated and automated processing process, improving production efficiency and processing accuracy, reducing the labor intensity of workers, and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the external shape of the present invention.

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the clamping mechanism.

[0019] Figure 4 It is a schematic diagram of the coordination of the clamping cover plate, push rod and inner frame.

[0020] Among them, 1 frame, 2 clamping mechanism, 3 first motor, 4 transmission assembly, 5 horizontal wheel axle, 6 grinding wheel, 7 second motor, 8 horizontal screw, 9 horizontal guide rod, 10 outer frame, 11 inner frame, 12 clamping cover, 13 headphone plug, 14 third motor, 15 motor bracket, 16 connecting shaft, 17 jack, 18 spring, 19 hinge, 20 oblique opening, 21 push rod, 22 wheel groove, 23 support frame, 24 storage box, 25 dust baffle, 26 PLC control panel, 27 installation slot, 28 outer cover, 29 base. DETAILED DESCRIPTION

[0021] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Figure 4 In order to better show the matching relationship between the clamping cover plate, the push rod and the inner frame, a half-section view is selected. The position relationship described in the accompanying drawings is only for exemplary explanation and cannot be understood as a limitation of this patent.

[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0024] Example 1

[0025] like Figure 1-2 As shown, this embodiment provides a pre-welding grinding device for an earphone plug, comprising a frame 1 and a grinding mechanism, a transmission mechanism, a clamping mechanism 2 and a storage mechanism arranged on the frame 1.

[0026] Specifically, the grinding mechanism includes a support frame 23, a first motor 3, a transmission assembly 4, a horizontal wheel shaft 5 and a grinding wheel 6. The transmission assembly 4 is a pulley transmission structure, which is an existing commonly used transmission structure and will not be described in detail here. The grinding wheel 6 is a grinding wheel.

[0027] In this embodiment, the two ends of the support frame 23 are threadedly connected to the frame 1, and a corresponding mounting groove 27 is opened at the position of the frame 1, so that the height of the support frame 23 can be adjusted up and down. At the same time, the horizontal wheel shaft 5 is rotatably fixed to the support frame 23, and moves up and down with the support frame 23. The grinding wheel 6 is detachably arranged on the wheel shaft, and rotates with the horizontal wheel shaft 5. In addition, the first motor 3 is connected to the horizontal wheel shaft 5 through the transmission assembly 4, thereby driving the horizontal wheel shaft 5 and the grinding wheel 6 to rotate and grind. In this embodiment, two horizontal wheel shafts 5 and grinding wheels 6 are provided, one in front and one behind, with a parallel spacing of 3mm, and the spacing is adjustable, and are respectively used for grinding the left channel and the right channel of the headphone plug 13. This structure facilitates the grinding wheel 6 to ensure the grinding accuracy of the plug by fine-tuning up and down after it is worn, saves processing costs, and is convenient for controlling the grinding position and depth.

[0028] Specifically, the transmission mechanism includes a second motor 7, a horizontal screw 8 and a horizontal guide rod 9, and the horizontal screw 8 and the horizontal guide rod 9 are at a right angle to the horizontal wheel shaft 5 in the grinding mechanism. The horizontal screw 8 is threadedly connected to the clamping mechanism 2, and the horizontal guide rod 9 is slidably connected to the clamping mechanism 2. The second motor 7 is linked to the horizontal screw 8 to drive the clamping mechanism 2 to move along the horizontal guide rod 9.

[0029] Specifically, Figure 3 As shown, the clamping mechanism 2 includes an outer frame 10, an inner frame 11 and a clamping cover plate 12. The outer frame 10 is connected to a horizontal screw rod 8 and a horizontal guide rod 9 on both sides thereof. The inner frame 11 is assembled on the outer frame 10. The clamping cover plate 12 is arranged on the inner frame 11 and is used to clamp the headphone plug 13. The horizontal guide rod 9 and the horizontal screw rod 8 are used as connecting parts of the clamping mechanism 2. The output shaft of the second motor 7 is coaxially connected with the horizontal screw rod 8. The second motor 7 drives the horizontal screw rod 8 to rotate according to the set program, so that the clamping mechanism 2 moves in the horizontal direction. This structure is an existing motor screw transmission structure.

[0030] In addition, the inner frame 11 is stepped, and the clamping cover 12 cooperates with the inner frame 11 to form a plurality of jacks 17 for placing the headphone plugs 13. The clamping cover 12 is stacked on the inner frame 11, and a spring 18 for elastic tensioning is provided between the clamping cover 12 and the inner frame 11. A hinge 19 is connected between the clamping cover 12 and the inner frame 11, and an oblique opening 20 is left on the side of the clamping cover 12 away from the jack 17. The headphone jack 17 of this embodiment is a standard 3.5mm through-hole structure, which is composed of the inner frame 11 and the clamping cover 12. The inner wall of the headphone jack 17 has anti-slip patterns, so that the headphone plug 13 cannot rotate when clamped. The clamping cover 12 is designed to be a book-turning structure, and is tightly buckled on the stepped surface of the inner frame 11 under the tension of the spring 18. The inner frame 11 is provided with a push rod 21 , the movable end of which points to the oblique opening 20 of the clamping cover plate 12 , and the push rod 21 can push the oblique opening 20 to clamp and release the clamping cover plate 12 .

[0031] The function of the push rod 21 is to slightly push up the clamping cover 12 when cutting materials, so that the headphone jack 17 is opened, and the headphone plug 13 falls naturally due to its own gravity. The principle is that the head of the push rod 21 is designed as an oblique cone structure, and an oblique opening 20 is left on the side of the clamping cover 12 away from the jack 17. When the push rod 21 pushes and touches, the oblique opening 20 is subjected to tension, the clamping cover 12 is slightly opened, and the headphone jack is opened accordingly.

[0032] At the same time, the clamping mechanism 2 also includes a third motor 14, a motor bracket 15 and a connecting shaft 16. The third motor 14 is fixed to the outer frame 10 through the motor bracket 15. The output end of the third motor 14 is linked to the connecting shaft 16, and the connecting shaft 16 is connected and fixed to the inner frame 11. The third motor 14 drives the connecting shaft 16 to drive the inner frame 11 to rotate in the vertical direction. The outer frame 10 and the inner frame 11 are connected by the connecting shaft 16, and the connecting shaft 16 is also provided with a bearing. The inner frame 11 is directly connected to the output end rotating shaft of the third motor 14 through the connection, so as to achieve the purpose of accurately controlling the rotation angle of the inner frame 11.

[0033] The function of the outer frame 10 is to install the inner frame 11 and cooperate with the horizontal screw 8 and the horizontal guide rod 9 to realize the directional and fixed distance movement of the entire clamping mechanism 2 along the horizontal screw 8 and the horizontal guide rod 9 under the drive of the second motor 7. At the same time, the third motor 14 can drive the inner frame 11 to rotate 360 ​​degrees around the main axis of the connecting shaft 16, rotate to different positions, and realize different functions. When the inner frame 11 rotates to a vertical position and the headphone jack 17 faces upward, it is convenient to load materials; when it rotates to a horizontal position, it is polished; when it rotates to the headphone jack 17 faces downward, the push rod 21 is pushed out, and the end of the push rod 21 is designed to be an oblique cone structure. When it is pushed to the oblique opening 20 formed by the clamping cover plate 12 and the inner frame 11, the oblique opening 20 is opened, the clamping cover plate 12 overcomes the elastic force and opens slightly, and the headphone jack 17 also becomes larger and loose, and the headphone plug 13 falls naturally, realizing automatic unloading.

[0034] In addition, the outer frame 10 is provided with a wheel groove 22 for avoiding the grinding wheel 6, and the wheel groove 22 is close to one side of the jack 17. When the clamping mechanism 2 moves toward the grinding mechanism for grinding, the grinding wheel 6 can pass through without obstacles, so that the grinding wheel 6 grinds to the welding point position of the headphone plug 13 to be welded.

[0035] Specifically, the storage mechanism of this embodiment includes a large storage box and a small storage box. The two storage boxes 24 are arranged at the bottom of the clamping mechanism 2 and the grinding mechanism, and are used to collect the headphone plug 13 and the grinding waste. After the headphone plug 13 is processed, it is automatically unloaded and falls into the large storage box 24, which plays the role of storing the processed headphone plug 13. The function of the small storage box 24 is to load the metal dust and oxides that fall off during the grinding process. Dust baffles 25 are arranged on both sides of the small storage box 24 to prevent metal dust and oxides from splashing to other places and causing machine failure.

[0036] Furthermore, the grinding mechanism, the transmission mechanism, and the clamping mechanism 2 are connected to a PLC and are centrally controlled by the PLC; the frame 1 is provided with a PLC control panel 26. The PLC control panel 26 is an interface for human-machine exchange. The PLC is a control system. The entire process is controlled by the PLC to achieve automation. The PLC control panel 26 is provided with settings such as start, pause, and speed, and has adjustment and control functions such as selection, recovery, and loading. In addition, the frame 1 is provided with two external buttons, specifically the main power switch and the emergency stop button.

[0037] Furthermore, the frame 1 is also provided with an outer cover 28, which is opened during loading and closed during processing, so as to reduce the noise generated during the operation of the machine and the floating of processed metal powder, and facilitate inspection and repair. Bases 29 are also provided at the four ends of the bottom of the frame.

[0038] The specific implementation process of this embodiment is as follows:

[0039] The entire working process of the polishing device only requires manual loading, and the rest can be set by the program. The PLC controls each mechanism to automatically complete the processing, and finally manually takes out the processed headphone plug 13 collected in the storage box 24. It is divided into a loading station, a polishing station and a unloading station.

[0040] First, the worker opens the outer cover 28 of the frame 1 and uses the PLC control panel 26 to control the inner frame 11 to rotate to a vertical position with the headphone jack 17 facing upward. At the same time, the push rod 21 opens the clamping cover 12 to a certain gap, and then inserts the headphone plugs 13 to be polished into the headphone jack 17 one by one. The outer cover 28 of the frame 1 is closed, and the PLC control panel 26 is used to control the inner frame 11 to enter the processing procedure, that is, the third motor 14 rotates the inner frame 11 to a horizontal position.

[0041] Then, the transmission mechanism and the grinding mechanism are controlled to start. When the clamping mechanism 2 leaves the loading station, the grinding wheel 6 starts to rotate. The transmission mechanism drives the clamping mechanism 2 to reach the position of the grinding mechanism according to the preset distance, and starts to grind the welding point position of the headphone plug 13. Each headphone plug 13 is polished when passing the position of the grinding wheel 6.

[0042] After the grinding is completed, the transmission mechanism moves the clamping mechanism 2 to the unloading station. In this embodiment, the unloading station is also the loading station. The third motor 14 is controlled to drive the inner frame 11 to rotate to a vertical position with the headphone jack 17 facing downward. The push rod 21 pushes the inclined opening 20 of the clamping cover 12, the headphone jack 17 opens, and the headphone plug 13 falls into the storage box 24 due to its own gravity, completing the automatic unloading.

[0043] Finally, the push rod 21 is reset, and the clamping cover plate 12 is reset to the clamping state under the pulling force of the spring 18. The PLC controls the second motor 7 to return the clamping mechanism 2 to the loading station, completing the reset and continuing the next round of processing.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for polishing a headphone plug before welding, characterized in that: It comprises a frame (1) and a grinding mechanism, a transmission mechanism, and a clamping mechanism (2) arranged on the frame (1). The grinding mechanism comprises a first motor (3), a transmission assembly (4), a horizontal wheel shaft (5) and a grinding wheel (6); the grinding wheel (6) is arranged on the wheel shaft and rotates with the horizontal wheel shaft (5); the first motor (3) is connected to the horizontal wheel shaft (5) via the transmission assembly (4) to drive the horizontal wheel shaft (5) and the grinding wheel (6) to rotate and grind; The transmission mechanism comprises a second motor (7), a horizontal screw rod (8) and a horizontal guide rod (9); the horizontal screw rod (8) is threadedly connected to the clamping mechanism (2); the horizontal guide rod (9) is slidably connected to the clamping mechanism (2); the horizontal screw rod (8), the horizontal guide rod (9) and the horizontal wheel shaft (5) are at a right angle; the second motor (7) is linked to the horizontal screw rod (8) to drive the clamping mechanism (2) to move along the horizontal guide rod (9); The clamping mechanism (2) comprises an outer frame (10), an inner frame (11) and a clamping cover plate (12); the outer frame (10) is connected to a horizontal screw rod (8) and a horizontal guide rod (9) on both horizontal sides, the inner frame (11) is assembled on the outer frame (10), and the clamping cover plate (12) is arranged on the inner frame (11) and is used to clamp the headphone plug (13); The transmission mechanism drives the clamping mechanism (2) to move to the grinding mechanism area to perform a grinding operation; The clamping mechanism (2) further comprises a third motor (14), a motor bracket (15) and a connecting shaft (16); the third motor (14) is fixed to the outer frame (10) via the motor bracket (15); an output end of the third motor (14) is linked to the connecting shaft (16); the connecting shaft (16) is connected and fixed to the inner frame (11); the third motor (14) drives the connecting shaft (16) to drive the inner frame (11) to rotate in a vertical direction; The clamping cover plate (12) cooperates with the inner frame (11) to form a plurality of jacks (17) for receiving headphone plugs (13); the clamping cover plate (12) is stacked on the inner frame (11), and a spring (18) for elastic tensioning is provided between the clamping cover plate (12) and the inner frame (11); A hinge (19) is connected between the clamping cover plate (12) and the inner frame (11); an oblique opening (20) is left on the side of the clamping cover plate (12) away from the insertion hole (17); the inner frame (11) is provided with a push rod (21); the movable end of the push rod (21) points to the oblique opening (20) of the clamping cover plate (12), and the push rod (21) is movable to push the oblique opening (20) to achieve clamping and placing of the clamping cover plate (12); The grinding mechanism further comprises a support frame (23), the support frame (23) and the frame (1) are detachably fixed, and the horizontal wheel shaft (5) is rotatably fixed to the support frame (23) and moves with the support frame (23).

2. The headphone plug pre-welding grinding device according to claim 1, characterized in that: The outer frame (10) is provided with a wheel groove (22) for avoiding the grinding wheel (6), and the wheel groove (22) is close to one side of the insertion hole (17).

3. The headphone plug pre-welding grinding device according to claim 1, characterized in that: The transmission component (4) is a pulley transmission structure, and the grinding wheel (6) is a grinding wheel.

4. The headphone plug pre-welding grinding device according to claim 1, characterized in that: It also includes a storage mechanism, which includes a plurality of storage boxes (24). Each storage box (24) is arranged at the bottom of the clamping mechanism (2) and the polishing mechanism and is used to collect the headphone plug (13) and polishing waste.

5. The headphone plug pre-welding grinding device according to claim 4, characterized in that: A dustproof baffle (25) is provided between the storage boxes (24).

6. The headphone plug pre-welding grinding device according to claim 1, characterized in that: The grinding mechanism, transmission mechanism and clamping mechanism (2) are connected to a PLC and are centrally controlled by the PLC; the frame (1) is provided with a PLC control panel (26).

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