Device for removing joint line of earphone rear shell

Abstract

The utility model belongs to the field of removing joint lines of earphone rear shells, particularly relates to a device for removing joint lines of earphone rear shells, and aims to solve the problems that the existing product is irregular, the manual rolling force and direction are difficult to control, joint lines in certain areas are not flattened frequently, and the rolled product is ugly, so that the production efficiency is high. In order to solve the problem that a plurality of products are wasted due to the fact that oil is sprayed on the oil tank, the oil tank comprises a bottom frame, a top frame is welded to the top side of the bottom frame, and two operation doors are rotationally connected to the two sides of the top frame through hinges correspondingly. When in use, the multi-directional horizontal and vertical movement can be realized, and the positioning assembly and the earphone rear shell can be driven to realize 360-degree rotation by matching with the rotating assembly, so that the qualified rate of products is ensured, more blocks are rolled compared with manual rolling of operators, the waste of the products is reduced, the cost is saved, and the production risk is reduced; the phenomenon that the force direction is difficult to control is avoided, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of headphone back shell mold line removal technology, and in particular to a headphone back shell mold line removal device. Background Technology

[0002] The headphone back shell mold line removal device is an automated or semi-automated device specifically designed to remove residual mold lines after the headphone shell has been injection molded. Mold lines are unavoidable process marks during plastic injection molding, formed by tiny overflows of material generated at the mold parting surface.

[0003] In most existing headphone back shell mold removal devices, the operator rolls the injection-molded product 360 degrees at the mold parting line using a metal rod, and then rolls the raised areas around the mold parting surface flat.

[0004] Because the product may have irregularities, and it is difficult to control the pressure and direction of manual rolling, there are often areas where the parting line is not flattened. At the same time, it is difficult to see the rolled product until it is painted, which leads to a lot of product waste.

[0005] To address the aforementioned problems, this utility model document proposes a device for removing the mold line from the back shell of an earphone. Utility Model Content

[0006] This utility model provides a device for removing parting lines from the back shell of an earphone, which solves the problems of irregularities in the existing technology, difficulty in controlling the pressure and direction of manual rolling, frequent instances where parting lines are not flattened, and difficulty in seeing the parting lines after rolling until painting, resulting in a lot of wasted products.

[0007] This utility model provides the following technical solution:

[0008] A device for removing molding lines from the back shell of an earphone, comprising:

[0009] The bottom frame has a top frame welded to its top side, and two operating doors are rotatably connected to both sides of the top frame via hinges.

[0010] The positioning component is located at the top of the bottom frame and is used to position and fix the earphone back shell to be removed from the mold line;

[0011] A rotating component is located at the top of the bottom frame to drive the positioning component to rotate.

[0012] The motion component in the mold line of the earphone back shell is located at the top of the bottom frame and is used to drive the positioning component, the rotating component and the fixed earphone back shell to move horizontally and vertically.

[0013] In one possible design, the motion component includes a Y-axis electric slide rail and two X-axis electric slide rails, all of which are fixedly mounted to the top side of the bottom frame by screws, and are located inside the top frame.

[0014] In one possible design, the rotating assembly includes a mounting plate, a servo motor, a motor housing, and a through hole. Each mounting plate is bolted to the sliding component of the X-axis electric slide rail. The servo motor is screwed to the top of the mounting plate. The motor housing is screwed to the top side of the mounting plate to protect the servo motor. The through hole is located on the top side of the motor housing, and a vent is provided on the outer side of the motor housing.

[0015] In one possible design, the positioning assembly includes a rotating plate, an earphone back shell mold, and positioning holes. The output end of the servo motor is fixed to the bottom side of the rotating plate via a coupling. The earphone back shell mold is located on the top side of the rotating plate and is used for fitting and securing the earphone back shell to be de-molded. All four positioning holes are located on the top side of the rotating plate for precise positioning of the earphone back shell.

[0016] In one possible design, a mounting bracket is fixedly mounted on the sliding component of the Y-axis electric slide rail by bolts, and a plasma gun is fixedly mounted on the top of the mounting bracket by screws for removing the mold line on the positioned earphone back shell.

[0017] In one possible design, two inlets are provided on one side of the top frame for the positioning component, the rotating component, and the earphone back shell to slide in and out, so as to facilitate the removal and placement of the earphone back shell.

[0018] In one possible design, an observation window is provided on one side of the top frame.

[0019] In this application, during use, the bottom frame first serves as the basic support structure for the entire device. The top frame is welded to the top side of the bottom frame, and the operating doors on both sides are connected by hinges for easy operation and maintenance. Then, the earphone back shell to be de-molded is placed on the rotating plate of the positioning assembly. The rotating plate has four positioning holes, and the earphone back shell has corresponding positioning structures that match these holes. By inserting the positioning structures into the positioning holes, the earphone back shell is initially and accurately positioned on the rotating plate. Simultaneously, the earphone back shell mold on the top side of the rotating plate matches the shape of the earphone back shell, allowing it to be tightly secured in the mold, further ensuring the positioning stability of the earphone back shell. A stable mold removal line is subsequently obtained. At the same time, the motor housing mounted on the mounting plate can protect the servo motor inside, preventing dust, debris, etc. from entering the motor and affecting its normal operation. The through hole on the top side of the motor housing allows the output end of the servo motor to pass through, while the vent on the outside of the motor housing is used for heat dissipation, ensuring the temperature stability of the servo motor during operation. The rotating plate of the positioning component is fixed to the coupling through the output end of the servo motor, thereby realizing the connection between the positioning component and the rotating component. When the servo motor starts, the rotating plate can be driven to rotate through the coupling, which in turn drives the earphone back shell positioned on the rotating plate to rotate, so as to facilitate the subsequent mold removal line operation.

[0020] Next, the operator can control the X-axis electric slide rail of the motion component via the control system to move the positioning component, the rotating component, and the fixed earphone back shell left and right. The Y-axis electric slide rail can move the plasma gun mounted on the mounting bracket in the forward and backward direction. The two work together to achieve multi-directional horizontal and vertical movement, facilitating the movement of the earphone back shell to the appropriate position for removing the parting line. In conjunction with the rotating component, the positioning component and the earphone back shell can rotate 360 ​​degrees. Combined with the plasma gun, this facilitates the removal of the parting line. The high-energy plasma generated by the plasma gun after activation will remove the parting line from the positioned earphone back shell. The plasma process involves impact and removal, where the parting line material is rapidly melted and vaporized, thus achieving the purpose of removing the parting line. This ensures a high product qualification rate and is significantly more efficient than manual rolling, reducing product waste, saving costs, and lowering production risks. It also avoids the problem of uncontrollable force and direction, improving product quality. After the parting line removal is completed, the operator controls the sliding parts of the X-axis electric slide rail through the control system to move the headphone back shell, which has had its parting line removed, back to the feed port and returns to the origin. The operator then removes the product, places it back in place, and restarts the equipment. This cycle repeats, improving applicability.

[0021] The working principle of X-axis and Y-axis electric slide rails is the same, as detailed below: The electric slide rail has a built-in motor (DC motor) that converts electrical energy into mechanical energy via a power supply, driving the slide rail's movement. The motor, through a belt drive mechanism, converts the rotational motion into the linear motion of the slider. The controller receives external commands (such as position, speed, and direction), converts them into electrical signals, amplifies the control signals, and transmits them to the motor to adjust its speed and direction. Some systems are equipped with encoders or sensors to monitor the slider's position in real time and provide feedback to the controller, forming a closed-loop control. The slider has embedded bearings or rollers that contact the guide rail to reduce friction and ensure smooth movement. Sensors at both ends of the slide rail prevent the slider from exceeding its travel range and are equipped with emergency stop buttons, overload protection, and anti-collision sensors to ensure safe operation.

[0022] In this utility model, the headphone back shell mold removal device can achieve preliminary accurate positioning of the headphone back shell on the rotating plate through the positioning component. At the same time, the headphone back shell mold will match the shape of the headphone back shell, further ensuring the positioning stability of the headphone back shell, so as to obtain a stable mold removal line in the future.

[0023] In this utility model, the headphone back shell mold line removal device can realize the connection between the positioning component and the rotating component through the rotating component, and drive the rotating plate to rotate through the coupling, thereby driving the headphone back shell positioned on the rotating plate to rotate, so as to facilitate the subsequent mold line removal operation.

[0024] In this utility model, the headphone back shell mold line removal device can drive the positioning component, the rotating component and the fixed headphone back shell to move left and right through the motion component, and can also drive the plasma air gun installed on the mounting bracket to move in the front and back direction. The two cooperate with each other to achieve multi-directional horizontal and vertical movement, which is beneficial to move the headphone back shell to the appropriate mold line removal operation position.

[0025] In this invention, multi-directional horizontal and vertical movement can be achieved, and in conjunction with its rotating component, it can drive the positioning component and the earphone back shell to rotate 360 ​​degrees, thereby ensuring the product qualification rate. It is also much more efficient than manual rolling of blocks by operators, reducing product waste, saving costs and reducing production risks, avoiding the phenomenon of difficulty in controlling the force and direction, and improving product quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of a headphone back shell mold line removal device provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the hidden top frame structure of a headphone back shell mold line removal device provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the disassembled motor housing structure of an earphone back shell mold line removal device provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the Y-axis electric slide rail structure of a headphone back shell mold line removal device provided in an embodiment of the present invention.

[0030] Figure label:

[0031] 1. Base frame; 2. Top frame; 3. Operating door; 4. Feed inlet; 5. X-axis electric slide rail; 6. Mounting plate; 7. Servo motor; 8. Motor housing; 9. Through hole; 10. Rotating plate; 11. Earphone back shell mold; 12. Positioning hole; 13. Y-axis electric slide rail; 14. Mounting bracket; 15. Plasma air gun. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Example 1

[0034] The existing problem in the field of removing parting lines on headphone back shells is that the products may have irregularities, and it is difficult to control the pressure and direction of manual rolling. Often, the parting lines in some areas are not flattened. At the same time, it is difficult to see the rolled product, and it can only be seen after spraying with oil, which leads to a lot of product waste. To solve this problem, this solution designs a parting line removal device.

[0035] Please refer to Figures 1-4 A device for removing mold lines, comprising:

[0036] The bottom frame 1 has a top frame 2 welded to its top side. Both sides of the top frame 2 are connected to two operating doors 3 by hinges. The bottom frame 1 serves as the basic support structure for the entire device. The top frame 2 is welded to the top side of the bottom frame 1 and the operating doors 3 are connected to both sides by hinges to facilitate equipment operation and maintenance.

[0037] A positioning component is installed on the top of the base frame 1 to position and fix the earphone back shell to be de-molded. The positioning component includes a rotating plate 10, an earphone back shell mold 11, and positioning holes 12. The output end of the servo motor 7 is fixed to the bottom side of the rotating plate 10 through a coupling. The earphone back shell mold 11 is set on the top side of the rotating plate 10 for the earphone back shell to be de-molded to fit and be secured. Four positioning holes 12 are all opened on the top side of the rotating plate 10 for the earphone back shell to be precisely positioned. The earphone back shell to be de-molded is placed on the rotating plate 10 of the positioning component. The earphone back shell is provided with a positioning structure that matches the positioning holes 12. By inserting the positioning structure of the earphone back shell into the positioning holes 12, the earphone back shell is initially and accurately positioned on the rotating plate 10. At the same time, the earphone back shell mold 11 set on the top side of the rotating plate 10 will match the shape of the earphone back shell. The earphone back shell can be tightly secured in the mold, further ensuring the positioning stability of the earphone back shell, so as to obtain a stable de-molding line in the future.

[0038] The rotating assembly, located at the top of the base frame 1, drives the positioning assembly to rotate. The rotating assembly includes a mounting plate 6, a servo motor 7, a motor housing 8, and a through hole 9. Each mounting plate 6 is fixedly mounted to the sliding component of the X-axis electric slide rail 5 by bolts. The servo motor 7 is fixedly mounted to the top of the mounting plate 6 by screws. The rotating plate 10 of the positioning assembly is fixed to the coupling through the output end of the servo motor 7, thereby realizing the connection between the positioning assembly and the rotating assembly. When the servo motor 7 is started, the rotating plate 10 can be rotated through the coupling, thereby driving the earphone back shell positioned on the rotating plate 10 to rotate, so as to facilitate the subsequent removal of the mold line.

[0039] The motor housing 8 is fixedly mounted on the top side of the mounting plate 6 with screws to protect the servo motor 7. A through hole 9 is opened on the top side of the motor housing 8, and a vent is opened on the outside of the motor housing 8. The motor housing 5 mounted on the mounting plate 6 can protect the servo motor 7 inside, preventing dust, debris and other objects from entering the motor and affecting its normal operation. The through hole 9 on the top side of the motor housing 5 allows the output end of the servo motor 7 to pass through, and the vent on the outside of the motor housing 5 is used for heat dissipation to ensure the temperature stability of the servo motor 7 during operation.

[0040] The motion component in the removal of the mold line on the earphone back shell is located at the top of the bottom frame 1. It drives the positioning component, the rotating component, and the fixed earphone back shell to move horizontally and vertically. The motion component includes a Y-axis electric slide rail 13 and two X-axis electric slide rails 5. The Y-axis electric slide rail 13 and the two X-axis electric slide rails 5 are all fixedly installed on the top side of the bottom frame 1 by screws. The Y-axis electric slide rail 13 and the two X-axis electric slide rails 5 are all located inside the top frame 2. The X-axis electric slide rail 5 of the motion component can be controlled by the control system to drive the positioning component, the rotating component, and the fixed earphone back shell to move left and right. The Y-axis electric slide rail 13 can drive the plasma air gun 15 installed on the mounting bracket 14 to move forward and backward. The two work together to achieve multi-directional horizontal and vertical movement, which is conducive to moving the earphone back shell to a suitable position for removing the mold line. In conjunction with the rotating component, it can drive the positioning component and the earphone back shell to rotate 360 ​​degrees. In conjunction with the plasma air gun 15, it is conducive to removing the mold line from the product.

[0041] A mounting bracket 14 is fixedly installed on the sliding component of the Y-axis electric slide rail 13 by bolts. A plasma gun 15 is fixedly installed on the top of the mounting bracket 14 by screws. It is used to remove the mold line on the positioned earphone back shell. After the plasma gun 15 is started, the high-energy plasma generated will impact and remove the mold line on the positioned earphone back shell. Under the action of plasma, the mold line material is rapidly melted and vaporized, thereby achieving the purpose of removing the mold line and ensuring the product qualification rate.

[0042] This application can be used in the field of removing mold lines from the back shell of headphones, or in other fields applicable to this application.

[0043] The X-axis electric slide rail 5 and the Y-axis electric slide rail 13 are both model CCMW60, and the plasma air gun 15 is model HeFeng FR50B. Their structure and mechanism will not be described in detail here.

[0044] Example 2

[0045] refer to Figure 1 An improvement based on Embodiment 1: a device for removing mold lines from the back shell of an earphone, which is applied to the field of removing mold lines from the back shell of an earphone.

[0046] Two feed ports 4 are provided on one side of the top frame 2 for the positioning component, rotating component and earphone back shell to slide in and out, so as to facilitate the removal and placement of the earphone back shell.

[0047] An observation window is provided on one side of the top frame 2. During the operation of the device, the operator can observe the internal operation of the device in real time through the observation window, including the position of the earphone back shell, the progress of the mold line removal operation, and the working status of the plasma air gun.

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of the X-axis electric slide rail 5, servo motor 7, Y-axis electric slide rail 13 and plasma air gun 15 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations, but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0050] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A device for removing molding lines from the back shell of an earphone, characterized in that, include: The bottom frame (1) has a top frame (2) welded to its top side. Both sides of the top frame (2) are connected to two operating doors (3) by hinges. The positioning component is set on the top of the bottom frame (1) for positioning and fixing the earphone back shell to be removed from the mold line; A rotating component is set at the top of the bottom frame (1) to drive the positioning component to rotate. The motion component in the mold line of the earphone back shell is set at the top of the bottom frame (1) to drive the positioning component, the rotating component and the fixed earphone back shell to move horizontally and vertically.

2. The headphone back shell mold line removal device according to claim 1, characterized in that, The motion component includes a Y-axis electric slide rail (13) and two X-axis electric slide rails (5). The Y-axis electric slide rail (13) and the two X-axis electric slide rails (5) are all fixedly installed on the top side of the bottom frame (1) by screws. The Y-axis electric slide rail (13) and the two X-axis electric slide rails (5) are all located inside the top frame (2).

3. The headphone back shell mold line removal device according to claim 2, characterized in that, The rotating assembly includes a mounting plate (6), a servo motor (7), a motor housing (8), and a through hole (9). Each mounting plate (6) is fixedly mounted on the sliding component of the X-axis electric slide rail (5) by bolts. The servo motor (7) is fixedly mounted on the top of the mounting plate (6) by screws. The motor housing (8) is fixedly mounted on the top side of the mounting plate (6) by screws to protect the servo motor (7). The through hole (9) is opened on the top side of the motor housing (8). A vent is opened on the outside of the motor housing (8).

4. The headphone back shell mold line removal device according to claim 3, characterized in that, The positioning assembly includes a rotating plate (10), an earphone back shell mold (11), and positioning holes (12). The output end of the servo motor (7) is fixed to the bottom side of the rotating plate (10) via a coupling. The earphone back shell mold (11) is located on the top side of the rotating plate (10) and is used for fitting and securing the earphone back shell to be de-molded. The four positioning holes (12) are all located on the top side of the rotating plate (10) and are used for precise positioning of the earphone back shell.

5. The headphone back shell mold line removal device according to claim 4, characterized in that, A mounting bracket (14) is fixedly installed on the sliding component of the Y-axis electric slide rail (13) by bolts. A plasma gun (15) is fixedly installed on the top of the mounting bracket (14) by screws, which is used to remove the mold line on the positioned earphone back shell.

6. The headphone back shell mold line removal device according to claim 1, characterized in that, Two feed ports (4) are provided on one side of the top frame (2) for the positioning component, the rotating component and the earphone back shell to slide in and out, so as to facilitate the taking and putting in of the earphone back shell.

7. The headphone back shell mold line removal device according to claim 1, characterized in that, An observation window is provided on one side of the top frame (2).

Images