Automatic Film Applying Equipment for Headphone Charging Case

Abstract

The present invention discloses an automatic film - sticking device for an earphone charging case, which includes a frame, an earphone charging case positioning device for positioning the earphone charging case, a PF film feeding tray for providing PF film material, a backing paper recycling tray for recycling the backing paper of the PF film, a protective film recycling tray for recycling the protective film on the PF film tape, a PF film peeling mechanism capable of peeling the PF film from the backing paper, a manipulator mechanism for attaching the peeled PF film to the earphone charging case, a protective film position detection mechanism for detecting the position of the peeled PF film, a film - pressing mechanism for pressing the PF film attached to the earphone charging case, and a control system for controlling the actions of each mechanism. The present invention realizes the automatic peeling of the PF film product from the tape and the automatic fitting into the earphone charging case, avoids the manual sticking of the PF film on the earphone charging case, greatly saves labor, and reduces the production cost of the enterprise.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment, and particularly to an automatic film pasting device for a headphone charging case. Background Art

[0002] During the production process of a headphone charging case, a PF film product (Foam) needs to be pasted inside the headphone charging case (SK). Currently, the manual operation mode is adopted, that is, the PF film is manually removed from the base paper of the PF film tape and then pasted at a specified position inside the headphone charging case. The efficiency of manual PF film pasting is extremely low, and due to different pressures applied by each person when pasting the PF film, the bonding stability and consistency of the PF film product are poor, and situations such as dislocation and detachment of the PF film product often occur, causing troubles to the subsequent use stability of the headphone charging case. Summary of the Invention

[0003] In order to overcome the above defects, the present invention provides an automatic film pasting device for a headphone charging case, which realizes the full-automatic pasting of PF film on the headphone charging case, avoids manual operation, and improves the bonding efficiency, bonding position accuracy and stability.

[0004] The technical solution adopted by the present invention to solve its technical problems: An automatic film pasting device for a headphone charging case, comprising a frame, a headphone charging case positioning device, a PF film feeding tray, a backing paper recycling tray, a protective film recycling tray, a PF film peeling mechanism, a manipulator mechanism, a protective film position detection mechanism, a film pressing mechanism and a control system. The headphone charging case positioning device is arranged on the frame, and the headphone charging case positioning device can stop and position the headphone charging case to be pasted with the PF film. The PF film feeding tray, the PF film backing paper recycling tray and the PF film protective film recycling tray are respectively rotatably installed on the frame. A PF film roll is wound on the PF film feeding tray. The PF film protective film recycling tray can actively wind the protective film of the PF film roll led out from the PF film feeding tray. The PF film backing paper recycling tray can actively wind the backing paper of the PF film roll led out from the PF film feeding tray and passing through the PF film peeling mechanism. The PF film peeling mechanism can separate the PF film product from the backing paper. The protective film position detection mechanism includes a first detection bracket, a first detection slide rail, a first camera and a first detection driving device. The first detection bracket is fixedly installed on the frame. The first detection slide rail is installed on the first detection bracket along the PF film tearing direction. The first camera is slidably installed on the first detection slide rail. The first camera can perform real-time imaging on the PF film peeled from the backing paper and transmit signals to the control system. The first detection driving device drives the first camera to slide on the first detection slide rail. The manipulator mechanism can grab the PF film product separated by the PF film separation mechanism and paste it on the designated position of the headphone charging case on the headphone charging case positioning device. The film pressing mechanism includes a film pressing bracket, a pressing head and a pressing head driving device. The film pressing bracket is fixedly installed on the frame. The pressing head is installed on the film pressing bracket so as to be able to move up and down longitudinally. The pressing head driving device drives the pressing head to move up and down. The pressing head can press the PF film located at the designated position of the headphone charging case. The control system controls the actions of the PF film backing paper recycling tray, the PF film protective film recycling tray, the PF film peeling mechanism, the manipulator mechanism, the first detection driving device and the pressing head driving device.

[0005] As a further improvement of the present invention, the manipulator mechanism includes a handling manipulator and a suction nozzle. The suction nozzle is fixedly installed on the moving end of the handling manipulator. The moving end of the handling manipulator can reach any point in the three-dimensional space within the set range. A suction plane is formed at the lower end of the suction nozzle. A plurality of negative pressure air holes are formed on the suction plane. The suction plane can be flatly attached to the surface of the PF film peeled from the backing paper. The negative pressure air holes are communicated with an external negative pressure air source through an air pipe. An electromagnetic valve is provided on the air pipe. The control system controls the actions of the handling manipulator and the electromagnetic valve.

[0006] As a further improvement of the present invention, the positioning device for the earphone charging case includes an earphone charging case positioning carrier, a main flow line, a feeding induction device, a carrier stop device, and a carrier clamping and positioning device. The main flow line is arranged on the rack, and the earphone charging case carrier can be conveyed forward along the conveying direction of the main flow line. The feeding induction device can sense the earphone charging case positioning carrier about to reach the specified position and transmit a signal to the control system. The carrier stop device can prevent the earphone charging case positioning carrier at the specified position on the main flow line from continuing to be conveyed forward. The carrier clamping mechanism can fixedly clamp the earphone charging case positioning carrier stopped by the carrier stop device. The control system controls the actions of the carrier stop device and the carrier clamping and positioning device.

[0007] As a further improvement of the present invention, the carrier stop device includes a stopper and a stopper lifting drive device. The stopper is installed on the side wall of the main flow line so as to be able to move up and down. The rising or falling of the stopper can prevent the earphone charging case positioning carrier from moving forward or getting out of the blocking position. The stopper drive device drives the stopper to reciprocate up and down. The carrier clamping and positioning device includes upper fixing pieces fixedly arranged on both side walls of the main flow line, a lifting tray arranged below the main flow line, and a lifting drive device. The lifting tray is arranged directly below the main flow line so as to be able to move up and down. There is a hollow part on the main flow line for the lifting tray to pass through. The lifting tray can lift up the earphone charging case positioning carrier at the specified position on the main flow line so that the earphone charging case positioning carrier is tightly clamped between the carrier stop device, the upper fixing pieces, and the lifting tray. The lifting drive device drives the lifting tray to move up and down. The control system controls the start and stop actions of the lifting drive device.

[0008] As a further improvement of the present invention, there is also an earphone charging case film pasting position detection device, which includes a second detection bracket, a second detection slide rail, a second camera, a second detection drive device, a third detection bracket, a third camera, and a prism. The second detection bracket and the third detection bracket are fixedly installed on the rack. The second detection slide rail is installed on the second detection bracket along the streamline conveying direction. The second camera is slidably installed on the second detection slide rail. The second camera can image the earphone charging case product directly below it. The second detection drive device drives the second camera to slide on the second detection slide rail. The third camera and the prism are respectively fixedly installed on the third detection bracket. One side of the prism faces the side of the earphone charging case product at the specified position on the main flow line, and the other side of the prism faces the third camera. The third camera can image the image refracted by the prism. The second camera and the third camera transmit signals to the control system, and the control system controls the action of the second detection drive device.

[0009] As a further improvement of the present invention, a barcode scanner is also provided at the starting end of the main flow line on the rack. The barcode scanner can scan and read the surface barcode data of the earphone charging case entering the main flow line. The barcode scanner is electrically connected and communicates with the control system.

[0010] As a further improvement of the present invention, an empty carrier return line is also provided on the rack. The empty carrier return line is located on one side of the main line, and the conveying direction of the empty carrier return line is opposite to that of the main line. The empty carrier return line can convey empty carriers.

[0011] As a further improvement of the present invention, the PF film peeling mechanism includes a peeling bracket, a peeling slide table, and a PF film receiving platform. The peeling slide table is fixedly installed between the two side walls of the peeling bracket. One end of the peeling slide table forms a sharp corner structure. The PF film receiving platform is fixedly installed on the peeling bracket, and the PF film receiving platform is connected to the end of the peeling slide table with the sharp corner structure. The tape drawn from the PF film supply reel peels off the protective film and then bypasses the sharp corner structure of the peeling slide table. The base paper of the tape turns through the gap between the sharp corner structure of the peeling slide table and the PF film receiving platform and finally winds around the back of the PF film supply reel. The end of the PF film product separated from the base paper is just supported on the surface of the PF film receiving platform.

[0012] As a further improvement of the present invention, there are several negative pressure air holes on the upper surface of the peeling slide table. The negative pressure air holes are communicated with the external negative pressure air path. On both sides of the upper surface of the peeling slide table in the width direction of the tape, L-shaped pressing blocks are respectively fixedly provided. The two side edges of the base paper of the tape are just inserted into the channels formed between the pressing blocks and the peeling slide table.

[0013] As a further improvement of the present invention, the film pressing mechanism further includes a pressure maintaining device, a timer, and an elastic pad. The elastic pad is fixedly provided on the lower surface of the pressing head. The pressure maintaining device can provide a set downward pressure to the pressing head, and the timer can time the pressing time. The timer is electrically connected and communicated with the control system.

[0014] The beneficial effects of the present invention are as follows: The present invention realizes the automatic peeling of the PF film product from the tape and the automatic fitting into the headphone charging box. The headphone charging box realizes full-automatic conveying and positioning, avoiding manual feeding. Before fitting, the PF film product automatically detects its size and position, realizes the distinction between qualified products and unqualified products, and avoids the fitting of unqualified PF films in the headphone charging box. The present invention detects, compares, and adjusts the positions of the PF film product and the headphone charging box, and finally realizes the precise fitting of the PF film in the headphone charging box, ensuring that the fitting positions of the PF films in each headphone charging box are highly consistent. And through the pressure maintaining module, the PF film product is pressure maintained, avoiding its falling off due to factors such as vibration, ensuring the stable use of the headphone charging box in the later stage. The present invention also avoids manual pasting of PF films on the headphone charging box, greatly saving labor and reducing the production cost of the enterprise. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of the present invention;

[0016] Figure 2 This is the front view of the present invention;

[0017] Figure 3 This is the top view of the present invention;

[0018] Figure 4 This is the right view of the present invention;

[0019] Figure 5 This is the perspective view of the main streamline of the present invention;

[0020] Figure 6 This is the perspective view of the lifting and clamping device of the present invention;

[0021] Figure 7 This is the perspective view of the vehicle stop device of the present invention;

[0022] Figure 8 This is the perspective view of the return line of the present invention;

[0023] Figure 9 This is the perspective view of the manipulator mechanism of the present invention;

[0024] Figure 10 This is the perspective view of the feeding and peeling mechanism of the present invention;

[0025] Figure 11 is Figure 10 the enlarged view of part A in

[0026] Figure 12 This is the perspective view of the PF film gripping position detection device of the present invention;

[0027] Figure 13 This is the perspective view of the PF film detection device of the present invention;

[0028] Figure 14 This is the perspective view of the earphone charging case position detection device of the present invention;

[0029] Figure 15 This is the perspective view of the pressure maintaining device of the present invention;

[0030] Figure 16 This is the front view of the pressure maintaining device of the present invention;

[0031] Figure 17 This is the right view of the pressure maintaining device of the present invention. Detailed implementation manners

[0032] Embodiment: An automatic film - sticking device for a headphone charging case, characterized in that it includes a frame 1, a headphone charging case positioning device, a PF film feeding tray 2, a backing paper recycling tray 3, a protective film recycling tray 4, a PF film peeling mechanism 5, a manipulator mechanism 6, a protective film position detection mechanism, a film - pressing mechanism and a control system. The headphone charging case positioning device is arranged on the frame 1 and can stop and position the headphone charging case to be stuck with the PF film. The PF film feeding tray 2, the PF film backing paper recycling tray 3 and the PF film protective film recycling tray 4 are respectively rotatably installed on the frame 1. A PF film roll is wound on the PF film feeding tray 2. The PF film protective film recycling tray 4 can actively wind the protective film of the PF film roll led out from the PF film feeding tray 2. The PF film backing paper recycling tray 3 can actively wind the backing paper of the PF film roll led out from the PF film feeding tray 2 and passing through the PF film peeling mechanism 5. The PF film peeling mechanism 5 can separate the PF film product from the backing paper. The protective film position detection mechanism includes a first detection bracket, a first detection slide rail, a first camera and a first detection driving device. The first detection bracket is fixedly installed on the frame 1. The first detection slide rail is installed on the first detection bracket along the PF film peeling direction. The first camera is slidably installed on the first detection slide rail. The first camera can perform real - time imaging on the PF film peeled from the backing paper and transmit the signal to the control system. The first detection driving device drives the first camera to slide on the first detection slide rail. The manipulator mechanism 6 can grab the PF film product separated by the PF film separation mechanism and stick it to the designated position of the headphone charging case on the headphone charging case positioning device. The film - pressing mechanism includes a film - pressing bracket, a pressing head and a pressing head driving device. The film - pressing bracket is fixedly installed on the frame 1. The pressing head is installed on the film - pressing bracket to be able to move up and down longitudinally. The pressing head driving device drives the pressing head to move up and down. The pressing head can press the PF film located at the designated position of the headphone charging case. The control system controls the actions of the PF film backing paper recycling tray 3, the PF film protective film recycling tray 4, the PF film peeling mechanism 5, the manipulator mechanism 6, the first detection driving device and the pressing head driving device.

[0033] After the PF film tape is led out from the PF film supply reel 2, the protective film on its surface is guided by one or more guide rollers and then wound around the PF film protective film recovery reel 4. The base paper of the PF film tape and the PF film product thereon continue to be pulled forward and finally enter the PF film peeling mechanism 5. The PF film peeling mechanism 5 peels off the front end part of the PF film product from the base paper, and then the manipulator mechanism 6 grabs the peeled-off PF film and tears it forward, finally tearing the PF film completely from the base paper. The base paper is finally wound around the PF film base paper recovery reel 3. During the process of the manipulator tearing the PF film, the first camera follows the movement of the PF protective film in real time and vertically images it in real time, finally obtaining the real-time and accurate position information of the PF protective film. The PF film product peeled off from the base paper is finally transported by the manipulator mechanism 6 to the positioning device of the earphone charging box. The control system determines the fitting position of the manipulator mechanism 6 according to the position information of the PF film by the first camera, and finally the manipulator accurately preliminarily attaches it to the designated position of the earphone charging box. Then the pressing head descends to press the PF film tightly against the designated position of the earphone charging box. The present invention realizes the full-automatic PF film pasting for the earphone charging box, with accurate pasting position, avoiding manual PF film pasting, high efficiency in PF film pasting, accurate position, saving labor and reducing production costs.

[0034] The manipulator mechanism 6 includes a handling manipulator and a suction nozzle. The suction nozzle is fixedly installed on the moving end of the handling manipulator. The moving end of the handling manipulator can reach any point in the three-dimensional space within the set range. A suction plane is formed at the lower end of the suction nozzle. A number of negative pressure air holes 20 are formed on the suction plane. The suction plane can be flatly attached to the surface of the PF film peeled off from the base paper. The negative pressure air holes 20 are communicated with the external negative pressure air source through an air pipe. An electromagnetic valve is provided on the air pipe. The control system controls the actions of the handling manipulator and the electromagnetic valve. The handling manipulator drives the suction nozzle to operate in the three-dimensional space. The suction nozzle first sucks the front end of the PF film peeled off from the PF film peeling mechanism 5, and at the same time the suction nozzle moves forward to tear the PF film. Along with the reverse winding of the base paper, the PF film is completely torn off from the base paper. The completely torn-off PF film is firmly sucked on the suction plane at the lower end of the suction nozzle, and the PF film forms a flat state. It is transported to the designated position of the earphone charging box by the handling manipulator. The manipulator descends to make the adhesive side of the PF film stick to the surface of the earphone charging box. Then the suction nozzle cancels the negative pressure suction of the PF film, and the PF film is preliminarily stuck to the surface of the earphone charging box. This structure can realize the complete tearing off and preliminary bonding of the PF film, avoiding manual operation, and simulating the manual operation for tearing the PF film, with complete tearing off and no damage to the PF film. The handling manipulator can be a manipulator with a multi-axis articulated structure or a three-axis manipulator perpendicular to each other.

[0035] The headphone charging case positioning device includes a headphone charging case positioning carrier, a main line 7, a material incoming sensing device, a carrier stop device, and a carrier clamping and positioning device. The main line 7 is arranged on the frame 1, and the headphone charging case carrier can be conveyed forward along the conveying direction of the main line 7. The material incoming sensing device can sense the headphone charging case positioning carrier about to reach the specified position and send a signal to the control system. The carrier stop device can prevent the headphone charging case positioning carrier at the specified position on the main line 7 from continuing to be conveyed forward. The carrier clamping mechanism can fixedly clamp the headphone charging case positioning carrier stopped by the carrier stop device, and the control system controls the actions of the carrier stop device and the carrier clamping and positioning device. By pre-fixing and positioning the headphone charging case through the headphone charging case positioning carrier, the headphone charging case and the headphone charging case positioning carrier can be accurately and stably positioned into an integrated structure through a positioning groove and a pressing mechanism with the same shape as the headphone charging case on the headphone charging case positioning carrier. By arranging the main line 7 on the frame 1, automatic forward conveying of the headphone charging case carrier is realized. When the headphone charging case carrier is conveyed to the sensing area of the material incoming sensing device on the main line 7, the material incoming sensing device sends a signal to the control system, and the control system then controls the carrier stop device to start, blocking the headphone charging case carrier from continuing to move forward, and the carrier clamping and positioning device clamps and positions the headphone charging case positioning carrier, facilitating accurate film pasting. When the PF film is pasted on the headphone charging case, the carrier clamping and positioning device and the carrier stop device reset and disengage from clamping and blocking, and the headphone charging case carrier can continue to be conveyed forward to the next working station on the main line 7. This method realizes the automatic conversion of the conveying and positioning of the headphone charging case carrier, enabling it to be automatically conveyed to the next working station after the PF film is pasted.

[0036] The carrier stopping device includes a block 13 and a block lifting driving device 14. The block 13 is installed on the side wall of the mainstream line 7 so as to be able to move up and down. The rise or fall of the block 13 can prevent the earphone charging box positioning carrier from moving forward or leaving the blocking position. The block 13 driving device drives the block 13 to move up and down reciprocatingly. The carrier clamping and positioning device includes an upper fixing plate 8 fixed on the two side walls of the mainstream line 7, a lifting tray 9 arranged below the mainstream line 7 and a lifting driving device 10. The lifting tray 9 is arranged directly below the mainstream line 7 so as to be able to move up and down. The mainstream line 7 is provided with a hollow portion for the lifting tray 9 to pass through. The lifting tray 9 can lift up the earphone charging box positioning carrier at a specified position on the mainstream line 7 so that the earphone charging box positioning carrier is tightly clamped between the carrier stopping device, the upper fixing plate 8 and the lifting tray 9. The lifting driving device 10 drives the lifting tray 9 to move up and down, and the control system controls the start and stop action of the lifting driving device 10. The block 13 rises to block the earphone charging box positioning carrier, and then the lifting tray 9 rises to lift the earphone charging box carrier. Finally, the earphone charging box carrier is clamped between the two side walls in the width direction of the mainstream line 7, the block 13, the lifting tray 9 and the upper fixing plate 8. It is best to set a positioning pin 11 on the lifting tray 9, which is correspondingly plugged into the positioning hole on the bottom surface of the earphone charging box carrier to form a precise and stable positioning. This mechanism realizes fully automatic continuous loading and positioning, avoiding manual loading and positioning operations. The block 13 can also move horizontally or flip to achieve blocking and disengagement of the earphone charging box carrier. Such structures are equivalent replacement structures that can be easily thought of by technical personnel in this field based on this patent, and belong to the scope of protection of this patent.

[0037] A device for detecting the position of the film of the earphone charging box is also provided, including a second detection bracket, a second detection slide rail, a second camera, a second detection drive device, a third detection bracket, a third camera and a prism. The second detection bracket and the third detection bracket are fixedly installed on the frame 1, and the second detection slide rail is installed on the second detection bracket along the streamline conveying direction. The second camera can be slidably installed on the second detection slide rail, and the second camera can image the earphone charging box product directly below it. The second detection drive device drives the second camera to slide on the first detection slide rail, and the third camera and the prism are respectively fixedly installed on the third detection bracket. One side of the prism is opposite to the side of the earphone charging box product at a specified position on the mainstream line 7, and the other side of the prism is opposite to the third camera. The third camera can image the image refracted by the prism, and the second camera and the third camera transmit signals to the control system, and the control system controls the action of the second detection drive device. When the earphone charging box is being transported on the mainstream line 7, the second camera takes pictures from top to bottom to form a top view, and the third camera takes pictures by aligning the side wall through prism refraction to form a side view. Then, the control system can obtain the three-dimensional position data of the earphone charging box based on calculation, so that the robot can accurately stick the PF film on the surface of the earphone charging box.

[0038] At the starting end of the main line 7, a barcode scanner 44 is provided on the frame 1. The barcode scanner 44 can scan and read the barcode data on the surface of the earphone charging case entering the main line 7, and is electrically connected and communicated with the control system. The barcode scanner 44 is used to read and record the information of the PF film attached to the earphone charging case.

[0039] An empty carrier return line 15 is also provided on the frame 1. The empty carrier return line 15 is located on one side of the main line 7. The conveying direction of the empty carrier return line 15 is opposite to that of the main line 7. The empty carrier return line 15 can convey empty carriers. Both ends of the main line 7 and the empty carrier return line 15 are connected to the previous process station and the next process station respectively. The main line 7 conveys the full carriers with earphone charging cases on the previous process station to the next process station. Then, the empty carriers taken out of the earphone charging cases on the next process station are automatically returned to the previous process station through the empty carrier return line 15, realizing the cyclic use of the carriers, avoiding manual handling of the carriers, and saving the turnover cost of the carriers.

[0040] The PF film peeling mechanism 5 includes a peeling bracket 16, a peeling slide table 17 and a PF film receiving platform 18. The peeling slide table 17 is fixedly installed between the two side walls of the peeling bracket 16. One end of the peeling slide table 17 forms a sharp corner structure 19. The PF film receiving platform 18 is fixedly installed on the peeling bracket 16. The PF film receiving platform 18 is connected to the end of the peeling slide table 17 with the sharp corner structure 19. The tape strip drawn from the PF film supply reel 2 after peeling off the protective film bypasses the sharp corner structure 19 of the peeling slide table 17. The base paper of the tape strip turns through the gap between the sharp corner structure 19 of the peeling slide table 17 and the PF film receiving platform 18 and finally winds around the side away from the PF film supply reel 2. One end of the PF film product separated from the base paper is just supported on the surface of the PF film receiving platform 18.

[0041] The base paper and the PF film product attached to its surface are conveyed forward along the peeling slide table 17. When it reaches the sharp corner structure 19 at one end of the peeling slide table 17, the base paper turns along the sharp corner structure 19. Since the PF film product has a certain hardness, it cannot turn with the base paper. Therefore, one end of it is separated from the base paper and forms a raised state, and is supported by the surface of the PF film receiving platform 18, which is convenient for the manipulator to grab and peel it off. This mechanism realizes the automatic peeling of the PF film. In addition, it can also be other peeling methods, such as sucking it off the base paper by a suction cup. Such are all equivalent replacement structures that are easily conceivable by those skilled in the art according to this patent and belong to the protection scope of this patent.

[0042] On the upper surface of the peeling slide table 17, there are a number of negative pressure air holes 20, which are communicated with the external negative pressure air circuit. On both sides of the upper surface of the peeling slide table 17 in the width direction of the tape, there are respectively fixed L-shaped pressing blocks 21. The two side edges of the base paper of the tape are just inserted into the channels formed between the pressing blocks 21 and the peeling slide table 17.

[0043] When the base paper slides forward on the peeling slide table 17, it is subjected to the negative pressure suction of the negative pressure air holes 20 and closely adheres to the surface of the peeling slide table 17. At the same time, the base paper passes through the guiding channels formed between the pressing blocks 21 and the peeling slide table 17, realizing the guiding of the tape. The above structure enables the base paper not to warp on the peeling slide table 17, ensures accurate and stable peeling of the PF film, and avoids ineffective peeling.

[0044] The film pressing mechanism further includes a pressure maintaining device 43, a timer, and an elastic pad. The elastic pad is fixed on the lower surface of the pressing head. The pressure maintaining device 43 can provide a set downward pressure to the pressing head, and the timer can time the pressing time. The timer is electrically connected and communicated with the control system. After the PF film is pasted on the headphone charging case, the pressing head presses the surface of the PF film and maintains a certain pressure for a set time, realizing stable adhesion of the PF film in the headphone charging case and avoiding falling off due to vibration and so on.

Claims

1. An automatic film - sticking device for an earphone charging case, characterized in that: It includes a frame (1), a headphone charging case positioning device, a PF film feeding tray (2), a backing paper recycling tray (3), a protective film recycling tray (4), a PF film peeling mechanism (5), a manipulator mechanism (6), a protective film position detection mechanism, a film pressing mechanism and a control system. The headphone charging case positioning device is arranged on the frame. The headphone charging case positioning device can stop and position the headphone charging case to be pasted with PF film. The PF film feeding tray, the PF film backing paper recycling tray and the PF film protective film recycling tray are respectively rotatably installed on the frame. A PF film roll is wound on the PF film feeding tray. The PF film protective film recycling tray can actively wind the protective film of the PF film roll led out from the PF film feeding tray. The PF film backing paper recycling tray can actively wind the backing paper of the PF film roll led out from the PF film feeding tray and passing through the PF film peeling mechanism. The PF film peeling mechanism can separate the PF film product from the backing paper. The protective film position detection mechanism includes a first detection bracket, a first detection slide rail, a first camera and a first detection driving device. The first detection bracket is fixedly installed on the frame. The first detection slide rail is installed on the first detection bracket along the PF film tearing direction. The first camera is slidably installed on the first detection slide rail. The first camera can perform real-time imaging on the PF film torn from the backing paper and transmit signals to the control system. The first detection driving device drives the first camera to slide on the first detection slide rail. The manipulator mechanism can grab the PF film product separated by the PF film separation mechanism and paste it to the designated position of the headphone charging case on the headphone charging case positioning device. The film pressing mechanism includes a film pressing bracket, a pressing head and a pressing head driving device. The film pressing bracket is fixedly installed on the frame. The pressing head is installed on the film pressing bracket so as to be able to move up and down longitudinally. The pressing head driving device drives the pressing head to move up and down. The pressing head can press the PF film located at the designated position of the headphone charging case. The control system controls the actions of the PF film backing paper recycling tray, the PF film protective film recycling tray, the PF film peeling mechanism, the manipulator mechanism, the first detection driving device and the pressing head driving device. The manipulator mechanism includes a handling manipulator and a suction nozzle. The suction nozzle is fixedly installed on the moving end of the handling manipulator. The moving end of the handling manipulator can reach any point in the three-dimensional space within the set range. The lower end of the suction nozzle forms a suction plane. A plurality of negative pressure air holes are formed on the suction plane. The suction plane can be flatly attached to the surface of the PF film peeled from the backing paper. The negative pressure air holes are communicated with an external negative pressure air source through an air pipe. An electromagnetic valve is arranged on the air pipe. The control system controls the actions of the handling manipulator and the electromagnetic valve. The headphone charging case positioning device includes a headphone charging case positioning carrier, a main flow line (7), a feeding induction device, a carrier stop device and a carrier clamping and positioning device. The main flow line is arranged on the frame. The headphone charging case carrier can be conveyed forward along the conveying direction of the main flow line. The feeding induction device can sense the headphone charging case positioning carrier about to reach the designated position and transmit signals to the control system. The carrier stop device can prevent the headphone charging case positioning carrier reaching the designated position on the main flow line from continuing to be conveyed forward.The vehicle clamping mechanism can fixedly clamp the positioning vehicle of the earphone charging box stopped by the vehicle stop device, and the control system controls the actions of the vehicle stop device and the vehicle clamping and positioning device.

2. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: The carrier stop device comprises a block (13) and a block lifting drive device (14); the block is installed on the side wall of the mainstream line and can be lifted and lowered; the block rises or falls to prevent the earphone charging box positioning carrier from moving forward or leaving the blocking position; the block drive device drives the block to reciprocate and lift; the carrier clamping and positioning device comprises an upper fixing plate (8) fixed on the two side walls of the mainstream line, a lifting tray (9) arranged below the mainstream line, and a lifting drive device (10); the lifting tray is installed directly below the mainstream line and can be lifted and lowered; a hollow portion for the lifting tray to pass through is provided on the mainstream line; the lifting tray can lift the earphone charging box positioning carrier at a specified position on the mainstream line upward so that the earphone charging box positioning carrier is tightly clamped between the carrier stop device, the upper fixing plate and the lifting tray; the lifting drive device drives the lifting tray to move up and down; and the control system controls the start and stop action of the lifting drive device.

3. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: A device for detecting the position of the film sticking on the earphone charging box is also provided, comprising a second detection bracket, a second detection slide rail, a second camera, a second detection drive device, a third detection bracket, a third camera and a prism. The second detection bracket and the third detection bracket are fixedly mounted on the frame, the second detection slide rail is installed on the second detection bracket extending along the streamline conveying direction, the second camera is slidably installed on the second detection slide rail, the second camera can image the earphone charging box product directly below it, the second detection drive device drives the second camera to slide on the first detection slide rail, the third camera and the prism are respectively fixedly mounted on the third detection bracket, one side of the prism is opposite to the side of the earphone charging box product at a specified position on the mainstream line, and the other side of the prism is opposite to the third camera, the third camera can image the image refracted by the prism, the second camera and the third camera transmit signals to the control system, and the control system controls the action of the second detection drive device.

4. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: The frame is also provided with a barcode scanner (44) at the end of the main line. The barcode scanner can scan and read data from the barcode on the surface of the earphone charging box entering the main line. The barcode scanner is electrically connected and communicated with the control system.

5. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: An empty carrier return line (15) is also provided on the frame. The empty carrier return line is located on one side of the main line. The conveying direction of the empty carrier return line is opposite to the conveying direction of the main line. The empty carrier return line can convey empty carriers.

6. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: The PF film stripping mechanism comprises a stripping bracket (16), a stripping slide (17) and a PF film receiving platform (18), wherein the stripping slide is fixedly installed between the two side walls of the stripping bracket, one end of the stripping slide forms a sharp angle structure (19), the PF film receiving platform is fixedly installed on the stripping bracket, the PF film receiving platform is connected with the end of the stripping slide having the sharp angle structure, the material strip drawn out from the PF film supply tray is torn off the protective film and then bypasses the sharp angle structure of the stripping slide, the base paper of the material strip is turned through the gap between the sharp angle structure of the stripping slide and the PF film receiving platform and finally wound on the back of the PF film supply tray, and the end of the PF film product separated from the base paper is just supported on the surface of the PF film receiving platform.

7. The automatic film - sticking device for an earphone charging case according to claim 6, characterized in that: There are several negative pressure air holes (20) on the upper side surface of the peeling slide table. The negative pressure air holes are communicated with the external negative pressure air path. On both sides of the upper side surface of the peeling slide table in the width direction of the material tape, L-shaped pressing blocks (21) are respectively and fixedly arranged. The two side edges of the base paper of the material tape are inserted into the channels formed between the pressing blocks and the peeling slide table.

8. The automatic film - sticking device for an earphone charging case according to claim 1, characterized in that: The film pressing mechanism further includes a pressure maintaining device (43), a timer and an elastic pad. The elastic pad is fixedly arranged on the lower side surface of the pressing head. The pressure maintaining device can provide a set downward pressure to the pressing head. The timer can time the pressing time, and the timer is electrically connected and communicated with the control system.

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