A cell phone encapsulation device

Abstract

The application discloses a mobile phone film wrapping device and relates to the technical field of mobile phone production equipment. The device comprises a jig, a first Z-axis driving element, a bending stop block, a roller pressing mechanism and a sheet pressing mechanism. The jig is used for positioning the protective film and the mobile phone, and the bottom of the jig is connected with the first Z-axis driving element. Two bending stop blocks are arranged on the left and right sides of the jig along the length direction of the jig, and the side edge wrapping surface of the protective film is lifted by the lowering of the jig to be bent upward and attached to the side edge of the mobile phone. Two roller pressing mechanisms are arranged on the left and right sides of the jig respectively, and are used for pressing the top surface and the adhesive surface of the protective film to be attached. The sheet pressing mechanism is arranged between the left side of the jig and the roller pressing mechanism, and is used for keeping the left top wrapping surface attached to the top surface of the mobile phone by pressing the sheet. The application realizes the automatic operation of the mobile phone film wrapping, avoids the complexity and unevenness of manual operation, and significantly improves the production speed and the product yield.

Description

Technical Field

[0001] This application relates to the technical field of mobile phone packaging equipment, and more specifically, to a mobile phone wrapping device. Background Technology

[0002] In the mobile phone production and shipping process, a protective film is usually applied to the surface of the phone to prevent scratches and dirt during transportation or storage. With the diversification of mobile phone appearance design and the increasing packaging requirements, the structure of the protective film has become increasingly complex, needing to achieve multi-faceted and multi-angle coverage of the phone.

[0003] In related technologies, a typical mobile phone protective film structure is as follows: Figure 1 and Figure 2 As shown, it is typically a die-cut sheet material, including, from left to right, a 100 left top covering surface, a 200 left side covering surface, a 300 bottom covering surface, a 400 right side covering surface, a 500 full top covering surface, and a 600 adhesive surface. After application, the bottom covering surface is attached to the bottom of the phone, the left and right side covering surfaces are attached to the left and right sides of the phone respectively, the full top covering surface is attached to the top of the phone and covers the left top covering surface, and the adhesive surface has adhesive for sticking to the outside of the left side covering surface, thus achieving overall fixation and locking of the protective film.

[0004] Currently, protective films with multiple bends and layered structures are mostly applied manually during production. Operators must first place the phone on the protective film, then perform a series of complex actions to sequentially apply the film to the bottom, bend the sides, bend the top, and adhere the adhesive surface. This method, relying heavily on operator skill, is slow and cannot meet the demands of mass production. Furthermore, the difficulty in standardizing the amount of force applied and the bending angle leads to inconsistent product bonding quality and a low yield rate. Summary of the Invention

[0005] To address the issues of low efficiency and poor product consistency when manually wrapping mobile phones, this application provides a mobile phone wrapping device.

[0006] A mobile phone wrapping device, comprising:

[0007] A jig for positioning the protective film and the mobile phone;

[0008] The first Z-axis drive component is connected to the bottom of the fixture for driving the fixture to rise and fall;

[0009] The fixture has two bending blocks on each of its left and right sides, and the two bending blocks are arranged along the length of the fixture. The bending block on the left side is used to lift the left side of the protective film by lowering the fixture so that it bends upward and fits against the left side of the phone. The top left side of the protective film bends upward along with the left side of the protective film. The bending block on the right side is used to lift the right side of the protective film by lowering the fixture so that it bends upward and fits against the right side of the phone. The top right side and the adhesive side of the protective film bend upward along with the right side of the protective film.

[0010] There are two rolling mechanisms, which are respectively set on the left and right sides of the fixture. The rolling mechanism on the left is used to roll the left top covering surface of the protective film to make it fit the top of the mobile phone, and to roll the adhesive surface of the protective film to make it fit the left side covering surface of the protective film. The rolling mechanism on the right is used to roll the full top covering surface of the protective film to make it fit the top of the mobile phone.

[0011] A sheet pressing mechanism is disposed between the fixture and a roller pressing mechanism located on the left side of the fixture. It is used to press the left top covering surface of the protective film with a sheet to keep the left top covering surface adhered to the top surface of the mobile phone after roller pressing.

[0012] By adopting the above technical solution, which utilizes a combination of fixtures, drive components, bending blocks, roller pressing mechanisms, and sheet pressing mechanisms, the manual application method is replaced. The entire wrapping process—bottom bonding, side bending, top bending, and adhesive surface bonding—is completed automatically by the machine, avoiding the tediousness and slowness of manual operation. This significantly increases the production speed of mobile phone screen protectors, meeting the needs of mass production. Furthermore, the precise movements of the mechanical structure standardize the bending angles and force applied to each part of the protective film. This overcomes the problem of inconsistent bonding quality caused by varying skill levels and uneven force application during manual operation, thereby greatly improving the product yield.

[0013] Preferably, the fixture includes a body block whose size matches the bottom covering surface size of the protective film, a first mounting hole and a second mounting hole disposed on the body block, wherein there are multiple first mounting holes, and suction cups are installed in the multiple first mounting holes of the body block for adsorbing the protective film, and photoelectric switches are installed in the second mounting holes of the body block for sensing the protective film.

[0014] By adopting the above technical solution, multiple first mounting holes are set on the fixture and suction cups are installed, which can firmly adhere the bottom covering surface of the protective film to the surface of the fixture, ensuring that the protective film will not shift during subsequent phone placement and the entire bending process. The photoelectric switch set in the second mounting hole can automatically sense whether the protective film has been placed on the fixture. This provides conditions for realizing the automatic start and stop of the equipment and preventing malfunctions when the protective film is not placed or is misplaced, thus improving the intelligence level and operational reliability of the equipment.

[0015] Preferably, the fixture is provided with a fixing frame on both the left and right sides, the bending block is provided on the fixing frame, and two abutment positioning rods are provided on the fixing frame on the left side of the fixture. The two abutment positioning rods are arranged at intervals along the length direction of the fixture, and the first Z-axis drive component is fixed on one of the fixing frames.

[0016] By adopting the above technical solution, the bending stop and the first Z-axis drive component are integrated onto the fixed frame, making the entire device more compact and stable, facilitating overall assembly, disassembly, and maintenance. Two abutment positioning rods are installed on the left fixed frame, which can serve as positioning references when the protective film is placed on the fixture. When placing the protective film, one side of it rests against these two positioning rods, thereby ensuring a more precise position of the protective film relative to the fixture and further improving the accuracy of film coating positioning.

[0017] Preferably, each of the roller pressing mechanisms includes a mounting frame, on which a second Z-axis drive is provided. The second Z-axis drive is driven to connect to a first X-axis drive, which is driven to connect to a roller pressing frame. A pressure roller is connected to the roller pressing frame. The second Z-axis drive drives the first X-axis drive to move up and down, and the first X-axis drive drives the roller pressing frame to move closer to or away from the fixture.

[0018] By adopting the above technical solution, the combination of the second Z-axis drive and the first X-axis drive can control the lifting and lowering and horizontal movement of the pressure roller. This enables the pressure roller to perform forward and backward rolling and up and down rolling to match the mobile phone wrapping path. When the pressure roller is not in operation, it can retract and rise to avoid interfering with the lifting of the fixture and the movement of other mechanisms. When in operation, it can be moved to a designated position for rolling, ensuring the smoothness of the entire process.

[0019] Preferably, the roller press frame includes a base, on which a slide rail extending along the X-axis is provided. A slider is slidably connected to the slide rail, and a slide block is connected to the top surface of the slider. A hinge frame is provided on the top surface of the slide block, and a hinge shaft is provided on the hinge frame. The axis of the hinge shaft is parallel to the Y-axis. A swing arm is hinged to the hinge frame through the hinge shaft. The pressure roller is rotatably disposed at the end of the swing arm near the fixture. A pressure block is provided at the end of the swing arm away from the fixture. A first pressure sensor is provided on the slide block, and the pressure block abuts against the sensing probe of the first pressure sensor. The pressure of the pressure block swinging is sensed by the first pressure sensor. A connecting column is provided on the side of the base near the fixture, and a compression spring is provided between the connecting column and the slide block. A side plate is provided on the side of the base away from the fixture, and a second pressure sensor is provided on the side plate. The side of the slide block away from the fixture abuts against the sensing probe of the second pressure sensor. The pressure of the slide block sliding towards the side plate is sensed by the second pressure sensor.

[0020] By adopting the above technical solution, the pressure roller is mounted on the slide block via a swing arm and a hinge shaft, forming a floating structure. When the pressure roller contacts the mobile phone or protective film, it can adaptively fine-tune its angle to ensure full contact between the pressure roller and the bonding surface. Simultaneously, a compression spring provides a certain buffering force, making the rolling process a flexible contact, ensuring a tight bond while preventing scratches or damage to the mobile phone due to rigid impact. A first pressure sensor monitors the contact pressure of the pressure roller in the vertical direction in real time via the pressure block, while a second pressure sensor monitors the pushing pressure of the pressure roller in the horizontal direction via the slide block. The placement of these two sensors allows the control system to acquire pressure data during the rolling process in real time and accurately, thereby achieving closed-loop pressure control and ensuring that the force of each rolling operation meets the process requirements, greatly improving process stability.

[0021] Preferably, the sheet pressing mechanism is disposed on a fixed frame located on the left side of the fixture, and there are two of them. The two sheet pressing mechanisms are arranged at intervals along the length direction of the fixture, and each sheet pressing mechanism includes a second X-axis drive member. The second X-axis drive member is driven to move the third Z-axis drive member closer to or away from the fixture. The third Z-axis drive member is driven to move the sheet up and down.

[0022] By adopting the above technical solution, the thin sheet, as the pressing element, has a thin and light structure, which can be accurately inserted into and press the already bonded left top covering surface without interfering with other surrounding parts. This prevents the left top covering surface from deforming due to stress when the pressure roller retracts, thus affecting the covering of the entire top covering surface.

[0023] The beneficial technical effects of this application are as follows: The use of a fixture, driving component, bending stop, roller pressing mechanism, and thin film pressing mechanism replaces the manual application method. The entire wrapping process—bottom bonding, side bending, top bending, and adhesive surface bonding—is completed automatically by the machine, avoiding the tediousness and slowness of manual operation. This significantly improves the production speed of mobile phone screen protectors, meeting the needs of mass production. Furthermore, the precise movements of the mechanical structure standardize the bending angles and force applied to each part of the protective film. This overcomes the problem of inconsistent bonding quality caused by varying skill levels and uneven force application during manual operation, thereby greatly improving the product yield. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the protective film in the background art.

[0025] Figure 2 This is a schematic diagram of the structure of a mobile phone after it has been coated with a film in the background art.

[0026] Figure 3 This is a schematic diagram of the overall structure of a mobile phone wrapping device according to this embodiment.

[0027] Figure 4 This is a schematic diagram of the fixture in this embodiment.

[0028] Figure 5 This is a schematic diagram of the roller pressing mechanism in this embodiment.

[0029] Figure 6 This is a schematic diagram of the roller press frame in this embodiment.

[0030] Figure 7 This is a schematic diagram of the sheet pressing mechanism in this embodiment.

[0031] Reference numerals: 100, left top covering surface; 200, left side covering surface; 300, bottom covering surface; 400, right side covering surface; 500, full top covering surface; 600, adhesive surface; 1, jig; 11, body block; 12, first mounting hole; 13, second mounting hole; 14, suction cup; 15, photoelectric switch; 2, first Z-axis drive component; 3, bending stop block; 4, roller pressing mechanism; 41, mounting bracket; 42, second Z-axis drive component; 43, first X-axis drive component; 44, roller pressing frame; 441. Base; 4411. Connecting column; 442. Slide rail; 443. Slider; 444. Slide block; 4441. First pressure sensor; 4442. Side plate; 4443. Second pressure sensor; 445. Hinge frame; 4451. Hinge shaft; 446. Swing arm; 4461. Pressure block; 447. Compression spring; 45. Pressure roller; 5. Thin sheet pressing mechanism; 51. Second X-axis drive; 52. Third Z-axis drive; 53. Thin sheet; 6. Fixing frame; 7. Abutment positioning rod. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Reference Figure 3 A mobile phone wrapping device includes a fixture 1, a first Z-axis drive 2, a bending stop 3, a roller pressing mechanism 4, a sheet pressing mechanism 5, and a control system.

[0034] Reference Figure 3 and Figure 4 The fixture 1 includes a main body block 11. The size of the main body block 11 matches the size of the bottom covering surface of the protective film, making it easy to bend the sides of the protective film when placing the protective film and the mobile phone. The main body block 11 is provided with a first mounting hole 12 and a second mounting hole 13. There are multiple first mounting holes 12. Each of the multiple first mounting holes 12 of the main body block 11 is provided with a suction cup 14. The suction cup 14 is used to adsorb the protective film and fix it, making it less likely to move during the wrapping process and avoiding inaccurate wrapping position. A photoelectric switch 15 is installed in the second mounting hole 13 of the main body block 11. The photoelectric switch 15 senses whether there is a protective film on the main body and provides a signal for the automated operation of the equipment. The photoelectric switch 15 is electrically connected to the control system to transmit the signal to the control system, which then controls the action of the actuator.

[0035] Reference Figure 3 To achieve the bending of the protective film, two bending blocks 3 are provided on both the left and right sides of the fixture 1. The two bending blocks 3 are arranged along the length of the fixture 1, and a fixing frame 6 is also provided on both the left and right sides of the fixture 1. The two bending blocks 3 are set on the fixing frame 6. Furthermore, the first Z-axis drive 2 is fixed to the bending block 3 located on the left side of the fixture 1, and the first Z-axis drive 2 is connected to the bottom of the body block 11. The body block 11 is raised and lowered by the first Z-axis drive 2. During the descent of the body block 11, the bending block 3 located on the left side is used to lift the left side covering surface of the protective film by the descent of the body block 11, so that it bends upward and fits against the left side of the mobile phone. The top left covering surface of the protective film bends upward with the left side covering surface. The bending block 3 located on the right side is used to lift the right side covering surface of the protective film by the descent of the body block 11, so that it bends upward and fits against the right side of the mobile phone. The top covering surface and the adhesive surface of the protective film bend upward with the right side covering surface.

[0036] Referring to Figure 3, further, in order to ensure the accurate relative position of the protective film and the fixture 1, two abutment positioning rods 7 are provided on the fixing frame 6 on the left side of the fixture 1. The two abutment positioning rods 7 are arranged at intervals along the length of the fixture 1. The protective film is positioned on the fixture 1 by abutting the left side of the protective film with the abutment positioning rods 7, so as to ensure the accurate position of the film.

[0037] Reference Figure 3 and Figure 5 To achieve the bonding of the protective film's left top coverage, full top coverage, and adhesive surface, two roller pressing mechanisms 4 are configured. These two mechanisms 4 are located on the left and right sides of the fixture 1, respectively. Each roller pressing mechanism 4 includes a mounting frame 41, positioned on the side of the fixed frame 6 away from the fixture 1. A second Z-axis drive 42 is mounted on the mounting frame 41, which is connected to a first X-axis drive 43. The first X-axis drive 43 is connected to a roller pressing frame 44, on which pressure rollers 45 are connected. The second Z-axis drive 42 drives the first X-axis drive 43 to move up and down, and the first X-axis drive 43 drives the roller pressing frame 44 to move closer to or further away from the fixture 1. The combination of the second Z-axis drive 42 and the first X-axis drive 43 controls the lifting, lowering, and horizontal movement of the pressure rollers 45, simulating the path of manual roller pressing. Furthermore, to meet the roller pressing requirements at different locations, the number of pressure rollers 45 varies. A pressure roller 45 is provided on the roller pressing mechanism 4 located on the left side of the fixture 1. This pressure roller 45 is used to press the left top covering surface of the protective film to fit it against the top of the phone, and to press the adhesive surface of the protective film to fit it against the already bent left side covering surface. Two pressure rollers 45 are provided on the roller pressing mechanism 4 located on the right side of the fixture 1, arranged along the length of the fixture 1. These two pressure rollers 45 are used to press the full top covering surface of the protective film to fit it against the top of the phone. During operation, one pressure roller 45 on the left can extend into the space between the two pressure rollers 45 on the right to perform operations without interfering with each other. In this embodiment, the second Z-axis drive unit 42 and the first X-axis drive unit 43 are both linear modules, and both are electrically connected to the control system, whose operation is controlled by the control system through a program.

[0038] Reference Figure 3-6To prevent the phone from being damaged by the rigid roller, the roller press frame 44 includes a base 441. The base 441 has a slide rail 442 along the X-axis, and a slider 443 is slidably connected to the slide rail 442. A slide block 444 is fixed to the top surface of the slider 443. A hinge frame 445 is provided on the top surface of the slide block 444, and a swing arm 446 is hinged to it via a hinge shaft 4451 parallel to the Y-axis. The pressure roller 45 is rotatably mounted on the end of the swing arm 446 near the fixture 1. A first pressure sensor 4441 is provided on the slide block 444, and a pressure block 4461 is provided at the end of the swing arm 446 away from the fixture 1. This pressure block 4461 abuts against the probe of the first pressure sensor 4441 mounted on the slide block 444, for real-time monitoring of the contact pressure of the pressure roller 45 in the vertical direction. A connecting post 4411 is provided on the side of the base 441 near the fixture 1. A compression spring 447 is sleeved between the connecting post 4411 and the slide 444 to provide buffering for the rolling process, allowing the pressure roller 45 to adapt to the contact surface and achieve flexible contact. A side plate 4442 is provided on the side of the base 441 away from the fixture 1. A second pressure sensor 4443 is installed on the side plate 4442. The side of the slide 444 away from the fixture 1 abuts against the probe of the sensor, which is used to monitor the pushing pressure of the pressure roller 45 in the horizontal direction in real time. Both the first pressure sensor 4441 and the second pressure sensor 4443 are electrically connected to the control system to transmit pressure signals to the control system for monitoring.

[0039] Reference Figure 3 and Figure 7 To prevent the newly bonded left top covering surface from springing back or shifting due to stress when the left pressure roller 45 completes rolling and retracts, a sheet 53 pressing mechanism 5 is installed on the fixed frame 6 on the left side of the fixture 1. There are two such mechanisms, spaced apart along the length of the fixture 1. Each sheet 53 pressing mechanism 5 includes a second X-axis drive 51, which acts as a cylinder. This drive 51 is connected to and drives a third Z-axis drive 52, also acting as a cylinder, to move horizontally closer to or further away from the fixture 1. A sheet 53 is connected to the movable end of the third Z-axis drive 52, which drives the sheet 53 to move up and down. During operation, after the left pressure roller 45 completes rolling the left top covering surface, the sheet 53 pressing mechanism 5 drives the sheet 53 to precisely insert and press against the left top covering surface, creating stable conditions for subsequent bonding of the entire top covering surface. Both the second X-axis drive 51 and the third Z-axis drive 52 are electrically connected to the control system, which controls their operation.

[0040] The implementation principle of the mobile phone wrapping device of this application is as follows: When the device is started, the photoelectric switch 15 first detects whether a protective film is placed on the main body block 11 of the fixture 1. After confirmation, the control system instructs multiple suction cups 14 to firmly adsorb the protective film, preventing displacement during subsequent bending. The protective film is positioned by two abutment positioning rods 7 on the left fixed frame 6, establishing a reference for the entire wrapping process. Then, the operator places the mobile phone on the corresponding bottom covering surface of the protective film.

[0041] After positioning is completed, motion control enters the bending stage. The first Z-axis drive 2, fixed on the left bending block 3, starts working, driving the main body block 11 to descend smoothly. During this descent, the left bending block 3 lifts the left edge of the protective film, bending it upwards and fitting it to the left side of the phone, while the top left edge also stands up; the right bending block 3 simultaneously lifts the right edge of the protective film upwards, fitting it to the right side of the phone, while the top edge and adhesive surface also bend along with the right edge, thus completing the initial shaping of the protective film from a flat surface to a three-dimensional shape.

[0042] After the side bending is completed, the roller pressing mechanism 4 immediately intervenes to perform fine fitting. In the roller pressing mechanism 4 located on the left side of the fixture 1, the second Z-axis drive 42 lowers the mounting frame 41 to a predetermined height, and the first X-axis drive 43 then pushes the roller pressing frame 44 forward horizontally, so that the pressure roller 45 contacts the left top covering surface. The pressure roller 45 is designed with a swing arm 446 and a hinge shaft 4451, and works with a compression spring 447 to achieve flexible buffering. At the same time, the first pressure sensor 4441 monitors the vertical contact pressure and the second pressure sensor 4443 monitors the horizontal pushing pressure to ensure uniform force application and no damage to the phone. Under the real-time feedback of the pressure signal, the pressure roller 45 rolls smoothly, so that the left top covering surface is tightly fitted to the top of the phone. After the rolling is completed, the moment the left pressure roller 45 retracts, the sheet 53 pressing mechanism 5 on the fixed frame 6 is immediately activated: the second X-axis drive 51 pushes the sheet 53 horizontally above the left top covering surface, and the third Z-axis drive 52 then drives the sheet 53 to descend vertically, precisely pressing the already attached left top covering surface to prevent it from rebounding due to stress.

[0043] While the thin sheet 53 on the left is pressed, the roller pressing mechanism 4 located on the right side of the fixture 1 begins to work. Two rollers 45 arranged side-by-side on this mechanism move to the position of the full-top covering surface for roller pressing under the control of the second Z-axis drive 42 and the first X-axis drive 43. Since the thin sheet 53 mechanism on the left has occupied the left top area and the left roller 45 has retracted, the two rollers 45 on the right have sufficient operating space to smoothly roll and adhere the full-top covering surface onto the already pressed left top covering surface, forming a layered cover. After the full-top covering surface is rolled and pressed, the thin sheet 53 retracts, and the roller pressing mechanism 4 on the left operates again. Its single roller 45 moves to the adhesive surface position, rolling and adhering the adhesive surface at the end of the protective film to the outside of the already bent left side covering surface, achieving overall fixation and locking of the protective film. Finally, the two rollers 45 retract, completing the mobile phone film wrapping operation.

[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile phone wrapping device, characterized in that, include: A jig for positioning the protective film and the mobile phone; The first Z-axis drive component is connected to the bottom of the fixture for driving the fixture to rise and fall; The fixture has two bending blocks on each of its left and right sides, and the two bending blocks are arranged along the length of the fixture. The bending block on the left side is used to lift the left side of the protective film by lowering the fixture so that it bends upward and fits against the left side of the phone. The top left side of the protective film bends upward along with the left side of the protective film. The bending block on the right side is used to lift the right side of the protective film by lowering the fixture so that it bends upward and fits against the right side of the phone. The top right side and the adhesive side of the protective film bend upward along with the right side of the protective film. There are two rolling mechanisms, which are respectively set on the left and right sides of the fixture. The rolling mechanism on the left is used to roll the left top covering surface of the protective film to make it fit the top of the mobile phone, and to roll the adhesive surface of the protective film to make it fit the left side covering surface of the protective film. The rolling mechanism on the right is used to roll the full top covering surface of the protective film to make it fit the top of the mobile phone. A sheet pressing mechanism is disposed between the fixture and the roller pressing mechanism located on the left side of the fixture. It is used to press the left top covering surface of the protective film through the sheet pressing mechanism so that the left top covering surface is kept in contact with the top surface of the mobile phone after being roller pressed. The fixture is also provided with fixed frames on both the left and right sides. The bending block is provided on the fixed frame, and two abutting positioning rods are provided on the fixed frame on the left side of the fixture. The two abutting positioning rods are arranged at intervals along the length direction of the fixture. The first Z-axis drive component is fixed on one of the fixed frames. Each of the roller pressing mechanisms includes a mounting frame, on which a second Z-axis drive is provided. The second Z-axis drive is driven to connect to a first X-axis drive, which is driven to connect to a roller pressing frame. A pressure roller is connected to the roller pressing frame. The first X-axis drive is driven to move up and down by the second Z-axis drive, and the roller pressing frame is driven to move closer to or away from the fixture by the first X-axis drive. The roller press frame includes a base, on which a slide rail extending along the X-axis is provided. A slider is slidably connected to the slide rail. A slide block is connected to the top surface of the slider. A hinge frame is provided on the top surface of the slide block. A hinge shaft is provided on the hinge frame. The axis of the hinge shaft is parallel to the Y-axis. A swing arm is hinged to the hinge frame through the hinge shaft. The pressure roller is rotatably disposed at the end of the swing arm near the fixture. A pressure block is provided at the end of the swing arm away from the fixture. A first pressure sensor is provided on the slide block. The pressure block abuts against the sensing probe of the first pressure sensor. The first pressure sensor senses the pressure when the pressure block swings. A connecting column is provided on the side of the base near the fixture. A compression spring is provided between the connecting column and the slide block. A side plate is provided on the side of the base away from the fixture. A second pressure sensor is provided on the side plate. The side of the slide block away from the fixture abuts against the sensing probe of the second pressure sensor. The second pressure sensor senses the pressure when the slide block slides towards the side plate. The sheet pressing mechanism is mounted on a fixed frame located on the left side of the fixture, and there are two of them. The two sheet pressing mechanisms are arranged at intervals along the length of the fixture, and each sheet pressing mechanism includes a second X-axis drive member. The second X-axis drive member is driven to move the third Z-axis drive member closer to or away from the fixture. The third Z-axis drive member is driven to move the sheet up and down.

2. The mobile phone wrapping device according to claim 1, characterized in that: The fixture includes a body block whose size matches the bottom covering surface size of the protective film, a first mounting hole and a second mounting hole provided on the body block, and a plurality of first mounting holes. Each of the plurality of first mounting holes on the body block is equipped with a suction cup for adsorbing the protective film, and a photoelectric switch is installed in the second mounting hole on the body block for sensing the protective film.

Images