mounter

Abstract

This invention discloses a mounting machine in which at least one mesh is adhered to release paper to form a sheet, and multiple sheets are equally spaced and adhered between a bottom tape and a top film and coiled into a roll to form a material roll. The mounting machine includes a belt conveyor, a feeding device, a pressure holding device, a film peeling device, and an assembly device. The belt conveyor is used to transport the middle frame. The feeding device includes a drive mechanism and a peeling table and a receiving table arranged in opposite directions. The drive mechanism is used to drive the material roll to rotate, so that the peeling table can peel the sheets on the wound material roll one by one onto the receiving table. The assembly device picks up the sheets on the receiving table with a suction head and attaches the mesh on the sheet at an angle to the assembly hole of the middle frame. The pressure holding device presses the mesh in the assembly hole at an angle with a pressure head. The film peeling device straightens the release paper of the tilted sheet by a toggle rod and clamps the release paper with a gripper, driving the clamped release paper to rotate and move, so as to tear the release paper off the mesh.

Description

Technical Field

[0001] This invention relates to the field of electronic product assembly, and more particularly to a mounting machine for attaching a mobile phone microphone to the mounting holes in the mid-frame of a mobile phone using mesh. Background Technology

[0002] With the rapid development of science and technology, people have increasingly higher requirements for the quality of electronic products such as mobile phones, tablets, and headphones. While demanding high quality, they also pursue aesthetically pleasing designs. As a result, more and more electronic products are being designed to be smaller, thinner, and more compact, and even have a certain degree of curvature. Electronic products are also developing towards high-density integration and ultra-precision, which in turn places increasingly higher demands on the assembly equipment for electronic products.

[0003] When attaching the phone microphone to the mounting hole in the phone's frame using mesh, the size of the mounting hole on the frame for mesh attachment is relatively small due to the phone's small size and thinness. Furthermore, these mounting holes are often not straight holes, but rather angled or stepped holes with a certain degree of inclination. Combined with the fact that the mesh is not a planar structure but a curved, dome-like structure, it is difficult to position and attach the mesh during the assembly process. General assembly equipment has difficulty attaching the mesh accurately and efficiently to the mounting hole.

[0004] Currently, mesh is mostly applied to the assembly holes manually using handheld tools such as tweezers or vacuum pens. This application process often requires operation under a 3-5x magnifying glass or a 5-20x stereo microscope, resulting in high labor intensity and difficulty in controlling application accuracy and efficiency, thus failing to meet the requirements of high-efficiency production. Furthermore, the frame is often tilted during application to facilitate mesh placement, requiring tilting and positioning of the frame, further complicating the process. Additionally, for ease of operation, the mesh is often attached to release paper for positioning and application, necessitating the removal of the release paper from the mesh in the assembly holes. However, removing the release paper can cause the mesh to shift, leading to displacement or being pulled out of the assembly holes, thus affecting application accuracy and results.

[0005] Furthermore, currently, mesh is mostly supplied using a sheet-type feeding method. The mesh is adhered to release paper, and multiple release papers with mesh attached are arranged in a matrix on the base paper to achieve sheet-like feeding. However, the number of mesh sheets on each base paper is limited, requiring frequent material changes. This involves the transfer and positioning of each incoming sheet, resulting in relatively low feeding efficiency and inability to effectively guarantee feeding accuracy. Moreover, when manually peeling the release papers along with the mesh from the adhered base paper using tweezers or a vacuum pen, it is necessary to operate under a 3-5x tabletop magnifying glass or a 5-20x stereo microscope. Manual peeling is inefficient and cannot effectively guarantee peeling accuracy.

[0006] Therefore, a placement machine that can automate operations, has a simple structure, high efficiency, high placement accuracy, and excellent placement effect is needed to overcome the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a mounting machine that is simple in structure, highly automated, efficient, has high assembly accuracy, and achieves excellent results.

[0008] To achieve the above objectives, the present invention discloses a mounting machine in which at least one mesh is bonded to release paper to form a sheet, and multiple sheets are bonded at equal intervals between a bottom tape and a top film and coiled into a roll to form a material roll. The mounting machine includes a belt conveyor line arranged on a machine platform, a feeding device, a pressure holding device, and a film peeling device arranged sequentially on the machine platform along the conveying direction of the belt conveyor line, and an assembly device arranged between the belt conveyor line and the feeding device. The belt conveyor line is used to sequentially convey the middle frame through the feeding device, the pressure holding device, and the film peeling device. The feeding device includes a drive mechanism and oppositely arranged components. The device includes a peeling table and a receiving table. The driving mechanism drives the material roll to rotate, allowing the peeling table to peel the sheets from the material roll one by one onto the receiving table. The assembly device picks up the sheets from the receiving table with a suction head and attaches the mesh on the sheets at an angle to the assembly holes of the middle frame. The pressure head of the pressure holding device presses the mesh in the assembly holes at an angle. The film tearing device straightens the release paper of the tilted sheet by a lever and clamps the release paper with claws, causing the clamped release paper to rotate and move, so as to tear the release paper from the mesh.

[0009] Preferably, the tilt angle of the suction head during assembly and the tilt angle of the pressure head during pressure holding both correspond to the tilt angle of the assembly hole.

[0010] Preferably, the mounting machine further includes a top camera arranged above the receiving platform, a side camera arranged on the belt conveyor, and a bottom camera arranged between the belt conveyor and the assembly device. The top camera is used to identify the position coordinates of the sheet material on the receiving platform, the side camera is used to identify the position coordinates of the assembly hole, and the bottom camera is used to identify the position coordinates of the mesh picked up by the suction head.

[0011] Preferably, both the side camera and the bottom camera are arranged at an angle on the machine base, and the angle of the angle corresponds to the angle of the mounting hole.

[0012] Preferably, the mounting machine further includes a detection device arranged on the opposite rear side of the film-peeling device along the conveying direction of the belt conveyor line. The detection device uses two detection cameras to detect the mounting accuracy of the mesh from both the inside and outside.

[0013] Preferably, the feeding device further includes a base with at least one mounting slot, and a top film reel for top film winding, a material roll reel for loading material rolls, and a bottom tape reel for bottom tape winding, all arranged at opposite rear ends of the base. The drive motor of the drive mechanism is connected to the top film reel, the material roll reel, and the bottom tape reel to drive the three reels to rotate. The stripping table and the receiving table are arranged at opposite front ends of the base. The front end of the stripping table has a stripping section with a flat upper surface and a sloping lower surface. The top film at the starting end of the material roll loaded on the material roll reel is wound around the top film reel, and the bottom tape at the starting end of the material roll is wound around the stripping table and then around the bottom tape reel. Each piece of material on the bottom tape is peeled off from the bottom tape one by one under the traction force of the drive motor and the pushing force of the stripping section, and is pushed onto the receiving table.

[0014] Preferably, the assembly device further includes a six-axis robot that drives the suction head back and forth between the receiving table and the belt conveyor. The suction head includes a mounting base connected to the output end of the six-axis robot, a pull-back cylinder mounted on the upper end of the mounting base, a vacuum adsorption plate connected to the output end of the pull-back cylinder, and at least one vacuum nozzle mounted on the lower end of the mounting base. The adsorption surface of the vacuum nozzle is smaller than the adsorption surface of the vacuum adsorption plate, and the number of vacuum nozzles corresponds to the number of release paper meshes. The vacuum adsorption plate and the vacuum nozzles adsorb the release paper and the meshes, respectively.

[0015] Preferably, the pressure holding device further includes a support frame mounted on the machine base, a horizontal motor mounted on the support frame, a vertical motor connected to the output end of the horizontal motor, a cantilever arm connected to the output end of the vertical motor, a mounting plate mounted inclined on the cantilever arm, a sliding plate slidably mounted on the opposite front end of the mounting plate, and a pressure sensor mounted on the opposite rear end of the mounting plate. A spring is connected between the opposite rear end of the sliding plate and the pressure sensor. A pressure head corresponding to the number of mesh threads on the release paper is arranged at the opposite front end of the sliding plate. The horizontal motor and the vertical motor are used to drive the pressure head to move in a horizontal and vertical straight line, respectively.

[0016] Preferably, the film-tearing device further includes a support base mounted on the machine base, a longitudinal motor mounted on the support base, a transverse motor connected to the output end of the longitudinal motor, a rotary motor connected to the output end of the transverse motor, a first vertical cylinder connected to the output end of the rotary motor, a positioning frame connected to the output end of the first vertical cylinder, a second vertical cylinder and a third vertical cylinder spaced apart on two opposite sides of the positioning frame, and a clamping cylinder connected to the output end of the second vertical cylinder. The gripper and the actuating rod are respectively connected to the output ends of the clamping cylinder and the third vertical cylinder. The gripper and the actuating rod move along longitudinal, transverse, and vertical straight lines under the drive of the longitudinal motor, the transverse motor, and the first vertical cylinder, and rotate under the drive of the rotary motor. They also move along vertical straight lines under the drive of the second vertical cylinder and the third vertical cylinder, respectively. The clamping cylinder is used to drive the gripper to clamp or release the release paper.

[0017] Preferably, the gripper includes two symmetrically arranged grippers, and the gripping surface of the grippers is evenly distributed with multiple vertically arranged ribs. The grippers are also provided with air outlets, which are opened on the gripping surface of the grippers and are used to blow the torn release paper away from the grippers.

[0018] Compared with existing technologies, the feeding device, pressure holding device, and film peeling device of the mounting machine of this invention are arranged sequentially along the conveyor belt direction. An assembly device is also arranged between the conveyor belt and the feeding device, resulting in a reasonable and compact overall layout. Specifically, the middle frame of the mobile phone is automatically conveyed via the conveyor belt, and the mesh is automatically fed via the feeding device. At least one piece of mesh is adhered to the release paper to form a sheet, and then each sheet is evenly spaced and adhered between the bottom belt and the top film, and coiled into a roll to form a material roll. In use, the drive mechanism of the feeding device drives the material roll to rotate, allowing the peeling table to peel the sheets from the wound material roll one by one onto the receiving table arranged opposite to it. This facilitates the assembly device's handling of the peeled sheets. The use of a roll-type feeding method, unlike the existing sheet-type feeding method, effectively reduces the frequency of material changes, provides high feeding efficiency and accurate positioning, and is suitable for the high-efficiency requirements of automated production lines. The assembly device uses a suction head to apply the picked-up mesh at an angle to the assembly holes of the middle frame. After application, a pressure-holding device uses an angled pressure head to press the mesh in the assembly holes, effectively strengthening the adhesion between the mesh and the middle frame in the limited and relatively irregularly shaped assembly holes. This improves the stability of the assembly and prevents the mesh from shifting when the release paper is removed by the film-tearing device. During film removal, the film-tearing device also uses a toggle rod to straighten the release paper of the tilted sheet, and uses grippers to hold the release paper, rotating and moving it to tear it off from the mesh. The machine has a simple overall structure, enabling automatic feeding and assembly of the middle frame and mesh. The middle frame does not need to be tilted during application, pressure holding, and film removal, effectively simplifying the structure and achieving high assembly accuracy and efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the mesh assembly of the present invention being connected to the mounting hole in the middle frame of a mobile phone.

[0020] Figure 2 This is a plan view of the material roll of the present invention when it is unfolded.

[0021] Figure 3 This is an exploded view of the material roll unfolding according to the present invention.

[0022] Figure 4 This is a perspective view of the mounting machine of the present invention.

[0023] Figure 5 This is a plan view of the mounting machine of the present invention.

[0024] Figure 6 This is a perspective view of the feeding device of the present invention.

[0025] Figure 7 This is a perspective view of the blowing mechanism of the present invention.

[0026] Figure 8This is a perspective view of the assembly apparatus of the present invention.

[0027] Figure 9 This is a perspective view of the suction head of the present invention.

[0028] Figure 10 This is a perspective view of the pressure-holding device of the present invention.

[0029] Figure 11 This is a perspective view of the film-tearing device of the present invention.

[0030] Figure 12 This is a plan view of the film-tearing device of the present invention. Detailed Implementation

[0031] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] See Figures 1 to 12 This invention provides a mounting machine 100 for mounting a microphone mesh 200 of a mobile phone into mounting holes 301 of the mid-frame 300 of the mobile phone. The mounting holes 301 are located on the lower edge of the rectangular mid-frame 300, and are specifically straight holes, angled holes, or stepped holes with a certain inclination. Furthermore, the mid-frame 300 can have multiple mounting holes 301, with multiple meshes 200 being mounted one-to-one into each mounting hole 301. The mesh 200 is a dome-shaped structure with a certain curvature and a relatively small mesh spacing, specifically made of metal material. The color of the mesh 200 also corresponds to the color of the mid-frame 300, such as black, white, gold, or gray. In this application, the mesh 200 is fed in rolls, reducing the frequency of material changes and effectively improving feeding efficiency. Specifically, at least one mesh 200 is adhered to the release paper 400 to form a sheet 500, and multiple sheets 500 are equally spaced and adhered between the correspondingly arranged bottom strip 600 and top film 700 and coiled into a roll to form a roll 800. Each sheet 500 is adhered to the bottom strip 600 with the side with the mesh 200 facing down, and the top film 700 covers the top side of each sheet 500.

[0033] Combination Figures 1 to 3Specifically, the release paper 400 is roughly rectangular and thin, comprising an integrally connected bonding portion 401 and a positioning portion 402. The mesh 200 is adhered to the bonding portion 401, specifically to its bottom side using double-sided adhesive. The bonding portion 401 and the positioning portion 402 can be arranged in a one-to-one correspondence, with each having only one unit. Alternatively, multiple bonding portions 401 can be spaced apart on a positioning portion 402, with multiple meshes 200 adhered to each bonding portion 401 in a one-to-one correspondence. In this case, the number of meshes 200 adhered to the release paper 400 can be two, three, or four, but is not limited to these. This allows for the simultaneous feeding and mounting of multiple meshes 200 at a time using the release paper 400, effectively improving feeding and mounting efficiency. Specifically, the shape and size of the fitting part 401 correspond to the shape and size of the mounting hole 301 of the middle frame 300. The width of the fitting part 401 is smaller than the width of the positioning part 402. This allows the fitting part 401 to easily fix the finely sized mesh 200, while the positioning part 402 provides more operating space, facilitating the peeling and assembly of the mesh 200. Furthermore, the width of the connection between the fitting part 401 and the positioning part 402 is less than or equal to the width of the fitting part 401, making it easy to bend and allowing the fitting part 401 to smoothly enter the mounting hole 301 of the middle frame 300. In addition, a clearance hole 400a is provided at the connection between the fitting part 401 and the positioning part 402, effectively reducing the stiffness of the connection and facilitating bending. Furthermore, an observation hole 400b is provided on the fitting part 401 to facilitate the observation and identification of the mesh 200 at its bottom end.

[0034] See Figure 4 and Figure 5Overall, the mounting machine 100 disclosed in the preferred embodiment of the present invention includes a belt conveyor 10, a feeding device 20, an assembly device 30, a pressure holding device 40, and a film peeling device 50 arranged on a machine base 101. The feeding device 20, the pressure holding device 40, and the film peeling device 50 are arranged sequentially along the conveying direction of the belt conveyor 10, and the assembly device 30 is arranged between the belt conveyor 10 and the feeding device 20. The belt conveyor 10 is used to convey the middle frame 300, allowing it to pass sequentially through the feeding device 20, the pressure holding device 40, and the film peeling device 50. The feeding device 20 includes a drive mechanism 21 and a peeling table 22 and a receiving table 23 arranged opposite to each other. The drive mechanism 21 drives the material roll 800 to rotate, so that the peeling table 22 can peel the sheet material 500 on the wound material roll 800 one by one onto the receiving table 23. Assembly device 30 picks up sheet material 500 from receiving table 23 via suction head 31 and attaches mesh 200 on sheet material 500 at an angle to assembly hole 301 in middle frame 300. Pressure head 41 of pressure holding device 40 presses against mesh 200 in assembly hole 301 at an angle. Film tearing device 50 straightens release paper 400 of tilted sheet material 500 via toggle rod 51, and clamps release paper 400 with jaws 52, causing the clamped release paper 400 to rotate and move, so as to tear release paper 400 from mesh 200.

[0035] Of course, the mounting machine 100 disclosed in this invention also includes a control system connected to the belt conveyor 10, the feeding device 20, the assembly device 30, the pressure holding device 40, and the film peeling device 50, respectively, and the control system controls the coordinated actions between the devices. It should be noted that the control system is an existing control system, and its structure and control principle are well known in the art, and will not be described in detail here.

[0036] See Figure 4 and Figure 5To improve assembly accuracy and efficiency, in some embodiments, the mounting machine 100 of the present invention further includes a top camera 60 arranged above the receiving platform 23. The top camera 60 is used to identify the position coordinates of the sheet material 500 received on the receiving platform 23 and send the identification information to the control system. The control system then issues an instruction so that the assembly device 30 can accurately pick up the material. Of course, the top camera 60 is also used to identify whether the receiving platform 23 has a sheet material 500 and the color of the sheet material 500, so that the control system can determine whether to perform subsequent mounting operations. In addition, in some embodiments, the mounting machine 100 of the present invention also includes a side camera 70 arranged on the side of the belt conveyor 10. The side camera 70 is used to identify the position coordinates of the mounting hole 301 and send the identification information to the control system. The control system then issues an instruction so that the assembly device 30 can adjust the position and angle of the picked-up sheet material 500 to achieve accurate mounting. During the mounting process, the side camera 70 also performs real-time alignment adjustment. In addition, in some embodiments, the mounting machine 100 of the present invention also includes a bottom camera 80 arranged between the belt conveyor 10 and the assembly device 30. The bottom camera 80 is used to identify the position coordinates of the mesh 200 picked up by the suction head 31 and send the identification information to the control system. The control system then issues an instruction so that the assembly device 30 can perform accurate mounting.

[0037] It should be noted that the tilt angle of the suction head 31 during assembly and the tilt angle of the pressure head 41 during pressure holding correspond to the tilt angle of the assembly hole 301. The side camera 70 and the bottom camera 80 are also arranged at an angle on the machine base 101, and their tilt angles correspond to the tilt angle of the assembly hole 301. That is, when the side camera 70, the bottom camera 80, the suction head 31, and the pressure head 41 complete the corresponding actions of mid-frame recognition, mesh recognition, placement, and pressure holding, their respective central axes are aligned with the central axis of the assembly hole 301, thereby completing the corresponding actions efficiently and accurately and effectively improving the assembly effect.

[0038] See Figure 4 and Figure 5In some embodiments, the mounting machine 100 of the present invention further includes a detection device 90 arranged on the opposite rear side of the film-peeling device 40 along the conveying direction of the belt conveyor 10. The detection device 90 detects the mounting accuracy of the mesh 200 from both the inside and outside sides using detection cameras 91 and 92, and sends the detection information to the control system. Detection camera 91, located on the opposite inner side of the middle frame 300 and directly opposite the mounting hole 301, detects whether the deviation between the center positions of the mesh 200 and the mounting hole 301, and whether the angular deviation of the mesh 200 is within a set error range. Another detection camera 92, located on the opposite outer side of the middle frame 300 and approximately flush with the mounting hole 301, detects whether the mesh 200 protrudes from the mounting hole 301 and the light transmittance of the mesh 200. Both detection cameras 91 and 92 utilize prisms for the detection operation.

[0039] See Figure 4 and Figure 5 Specifically, the belt conveyor 10 is sequentially equipped with a feeding position, an assembly position, a pressure holding position, a film tearing position, and a detection position along its conveying direction. The assembly device 30, the pressure holding device 40, the film tearing device 50, and the detection device 90 are arranged correspondingly at the assembly position, the pressure holding position, the film tearing position, and the detection position. The feeding device 20 is arranged in the area between the feeding position and the assembly position, effectively utilizing space and making the overall layout more compact. Among them, a barcode scanner is provided at the feeding position to scan and identify the middle frame 300 and send the identification information to the control system so that other devices can act under the instruction of the control system. In order to achieve precise positioning of the middle frame 300 at each work station, the belt conveyor 10 adopts a multi-segment conveyor belt that is connected in sequence for feeding. On the lower side of the conveying surface of the belt conveyor 10, a blocking mechanism and a lifting mechanism are also provided at the corresponding assembly position, pressure holding position, film tearing position and detection position. The blocking mechanism prevents or allows the carrier carrying the middle frame 300 to be conveyed on the belt conveyor 10 by the lifting action of the blocking rod. The lifting mechanism pushes the carrier upward or lifts it downward to remove it from the belt conveyor 10 or drop it back onto the belt conveyor 10 by the lifting action of the pushing plate, so that the corresponding action can be completed at each work station.

[0040] In actual operation, when the middle frame 300 flows into the feeding position of the belt conveyor 10 via the carrier, the barcode scanner first scans and identifies the middle frame 300, and sends the identification information to the control system so that other devices can act under the instruction of the control system. Then, the belt conveyor 10 sequentially conveys the identified middle frame 300 towards the assembly device 30, the pressure holding device 40, the film tearing device 50, and the detection device 90 to complete the corresponding assembly, pressure holding, film tearing, and detection operations. After the detection is completed, the middle frame 300 containing the mesh 200 flows out of the machine from the detection position. Defective products can be manually removed at the detection position, or they can be removed manually or by other rejection equipment when they flow into the next device along with good products.

[0041] See Figure 6 and Figure 7 Specifically, the feeding device 20 further includes a base 24 having at least one mounting slot 24a and at least one support 25 correspondingly slidably mounted on the mounting slot 24a. At the opposite rear end of the support 25 are arranged a top film tray 26 for winding the top film 700, a material roll tray 27 for loading the material roll 800, and a bottom belt tray 28 for winding the bottom belt 600. The drive motor 211 of the drive mechanism 21 is also mounted at the opposite rear end of the support 25 and is connected to the top film tray 26, the material roll tray 27, and the bottom belt tray 28 respectively to drive them to rotate. A stripping table 22 and a receiving table 23 are mounted at the opposite front end of the support 25, and the front end of the stripping table 22 has a stripping section with a flat upper surface and a sloping lower surface. When the base 24 is provided with two or more mounting slots 24a, the number of corresponding support seats 25 is also two or more. Thus, by the alternating entry and exit of each support seat 25 in the corresponding mounting slot 24a, it is not only convenient to load and unload the material roll 800, but also to achieve uninterrupted material supply, further adapting to the high efficiency requirements of automated production lines.

[0042] The top film reel 26, the material roll reel 27, and the bottom belt reel 28 can be arranged in a one-to-one correspondence with the drive motors 211, with each of the three drive motors 211 driving its rotation. Alternatively, they can be driven synchronously by a single drive motor 211, or two drive motors 211 can be used. One of the top film reel 26 and the bottom belt reel 28 rotates synchronously with the material roll reel 27 under the same drive motor 211, while the other rotates under the drive motor 211. Furthermore, the drive mechanism 21 also includes multiple guide wheels 212. Guide wheels 212 are arranged between the material roll reel 27 and the top film reel 26, between the material roll reel 27 and the stripping table 22, and between the stripping table 22 and the bottom belt reel 28, thereby guiding the conveying direction of the wound material roll 800.

[0043] Combination Figure 6 and Figure 7Specifically, in some embodiments, a blowing mechanism 29 is also arranged at the top side of the receiving platform 23. The blowing mechanism 29 blows air from above at an angle through a blowing plate 291 to blow the non-compliant sheet material 500 on the receiving platform 23 into the waste bin 292 located at the opposite front end of the receiving platform 23. The blowing plate 291 is provided with air holes, which are connected to an air source, thereby blowing the defective products from the receiving platform 23 into the waste bin 292.

[0044] Specifically, the blowing mechanism 29 also includes a bracket 293 mounted on the side of the support base 25, a horizontal motor 294 mounted on the bracket 293, and a vertical cylinder 295 connected to the output end of the horizontal motor 294. The blowing plate 291 is inclinedly connected to the output end of the vertical cylinder 295, thereby moving linearly in the front-back and up-down directions under the drive of the horizontal motor 294 and the vertical cylinder 295 to realize the blowing operation. That is, a preliminary inspection is performed before mounting, so that the assembly device 30 only mounts the qualified mesh 200 onto the middle frame 300, effectively improving assembly efficiency and avoiding ineffective work. In some embodiments, the blowing plate 291 is positioned adjustable in the front-back direction, and the tilt angle of the blowing plate 291 is also adjustable. Specifically, the output end of the vertical cylinder 295 is connected to an adapter plate 296, a cover plate 297 is adjustablely mounted on the adapter plate 296 in the front-back direction, and a blowing plate 291 is pivotally connected to the cover plate 297.

[0045] It should be noted that the top camera 60 and the receiving platform 23 are arranged in a one-to-one correspondence, or one top camera 60 moves back and forth between the two receiving platforms 23 to identify the sheet material 500 on the two receiving platforms 23 respectively. Specifically, the top camera 60 moves between the two receiving platforms 23 through a horizontal linear module.

[0046] In specific operation, the top film at the starting end of the material roll 800 loaded on the material roll reel 252 is first wound onto the top film reel 251. The bottom strip 600 at the starting end of the material roll 800 is wound around the stripping table 22 and then onto the bottom strip reel 253. When the drive motor 211 is activated, each piece of material 500 on the bottom strip 600 is peeled off one by one from the bottom strip 600 under the traction force of the drive motor 211 and the pushing force of the stripping part, and is pushed onto the receiving table 23. The top camera 60 identifies the peeled pieces of material 500, leaving only qualified products on the receiving table 23, while unqualified products are blown into the waste bin 292 by the blowing mechanism 29.

[0047] See Figure 8 and Figure 9Specifically, the assembly device 30 also includes a six-axis robot 32 that drives the suction head 31 back and forth between the receiving table 23 and the belt conveyor 10. The suction head 31 includes a mounting base 311 connected to the output end of the six-axis robot 32, a pull-back cylinder 312 mounted on the upper end of the mounting base 311, a vacuum suction plate 313 connected to the output end of the pull-back cylinder 312, and at least one vacuum nozzle 314 mounted on the lower end of the mounting base 311. The vacuum suction plate 313 is used for... The release paper 400 of the sheet material 500 is adsorbed, specifically the positioning part 402 of the release paper 400. The vacuum nozzle 314 is used to adsorb the mesh 200 of the sheet material 500. Specifically, the mesh 200 is adsorbed through the release paper 400 at its lower end, that is, through the bonding part 401 of the release paper 400. The pull-back cylinder 312 is used to drive the vacuum adsorption plate 313 to move in the opposite direction relative to the vacuum nozzle 314. The adsorption surface of the vacuum nozzle 314 is smaller than that of the vacuum adsorption plate 313, which facilitates the vacuum adsorption plate 313 to adsorb and fix the relatively large release paper 400. The relatively small vacuum nozzle 314 can provide more precise adsorption force to accurately adsorb the small mesh 200. The number of vacuum nozzles 314 corresponds to the number of mesh 200 on the release paper 400, thus enabling simultaneous mounting of one, two, three, or more mesh 200s. Furthermore, the suction surface of the vacuum nozzles 314 is provided with positioning protrusions 3141, the shape of which corresponds to the shape of the mesh 200. These protrusions provide good support and positioning for irregularly shaped mesh 200s, facilitating mounting.

[0048] Specifically, in some embodiments, a pressure sensor 315 is arranged on the rear side of the lower end of the mounting base 311, and a vacuum nozzle 314 is arranged on the front side of the lower end of the mounting base 311. A compression spring arranged in the front-back direction is connected between the pressure sensor 315 and the vacuum nozzle 314, so that the vacuum nozzle 314 can be flexibly mounted by compressing the spring. The pressure sensor 315 monitors the pressure applied by the vacuum nozzle 314 during mounting, further ensuring the safety of the mounting operation and effectively protecting the middle frame 300 and the mesh 200.

[0049] In actual operation, the suction head 31 moves and rotates under the drive of the six-axis robot 32, thereby moving back and forth between the receiving table 23 and the belt conveyor 10 to pick up the qualified sheet material 500 on the receiving table 23 and place the picked-up sheet material 500 into the assembly hole 301 of the middle frame 300 located in the assembly position to complete the mounting operation. In this process, the vacuum adsorption plate 313 and the vacuum nozzle 314 respectively pick up the release paper 400 and the mesh 200 of the sheet material 500. When the sheet material 500 is moved to the opening of the assembly hole 301, the six-axis robot 32 drives the vacuum nozzle 314 to continue moving to push the mesh 200 into the assembly hole 301 for mounting. At this time, the pull-back cylinder 312 provides a reverse force relative to the six-axis robot 32, causing the vacuum adsorption plate 313 to move in the opposite direction relative to the vacuum nozzle 314, so that it does not extend into the assembly hole 301, but stays at the opening of the assembly hole 301. In some embodiments, as the suction head 31, driven by the six-axis robot 32, transfers the picked-up sheet material 500 and applies it to the mounting hole 301, it briefly stops at the bottom camera 80 along the way. The camera identifies and provides feedback on the position coordinates of the mesh 200 picked up by the suction head 31. The control system, combined with the identification information of the position coordinates of the mounting hole 301 fed back by the side camera 70, gives instructions, and the six-axis robot 32 drives the suction head 31 to move and rotate accordingly to adjust the position and angle of the sheet material 500, thereby achieving precise application.

[0050] It should be noted that during the process of the six-axis robot 32 driving the suction head 31 to move to the bottom camera 80, it also drives the suction head 31 to rotate at a certain angle so that its tilt angle is consistent with the tilt angle of the bottom camera 80. Thus, by setting the recognition angle to be consistent with the assembly angle, the suction head 31 moves from the position opposite to the bottom camera 80 to the assembly position during the placement process, and then moves vertically down to the placement height opposite to the assembly hole 301. After that, it moves towards the direction closer to the assembly hole 301 until the mesh 200 is placed into the assembly hole 301, which effectively improves the assembly efficiency and accuracy.

[0051] See Figure 10 Specifically, the pressure holding device 40 also includes a support frame 42 mounted on the machine base 101, a horizontal motor 43 mounted on the support frame 42, a vertical motor 44 connected to the output end of the horizontal motor 43, a cantilever arm 45 connected to the output end of the vertical motor 44, a mounting plate 46 mounted inclined on the cantilever arm 45, a sliding plate 47 slidably mounted on the opposite front end of the mounting plate 46, and a pressure sensor 48 mounted on the opposite rear end of the mounting plate 46. A spring connects the opposite rear end of the sliding plate 47 to the pressure sensor 48, and a pressure head 41 corresponding to the number of mesh 200 on the release paper 400 is arranged on the opposite front end of the sliding plate 47. The pressure head 41 is specifically rod-shaped. Both the horizontal motor 43 and the vertical motor 44 are servo motors.

[0052] In actual operation, the pressure head 41 moves horizontally and vertically under the drive of the horizontal motor 43 and the vertical motor 44, respectively, thereby extending into the assembly hole 301 and pressing against the joint between the mesh 200 and the middle frame 300. During the pressing process, the pressure head 41 is flexibly pressed by a spring, and the pressure sensor 48 monitors the pressure of the pressure head 41, effectively ensuring the safety of the pressure holding operation and preventing damage to the middle frame 300 and the mesh 200.

[0053] See Figure 11 and Figure 12 The film-tearing device 50 also includes a support base 53 mounted on the machine base 101, a longitudinal motor 54 mounted on the support base 53, a transverse motor 55 connected to the output end of the longitudinal motor 54, a rotary motor 56 connected to the output end of the transverse motor 55, a first vertical cylinder 57 connected to the output end of the rotary motor 56, a positioning frame 58 connected to the output end of the first vertical cylinder 57, a second vertical cylinder 521 and a third vertical cylinder 511 spaced apart on two opposite sides of the positioning frame 58, and a clamping cylinder 522 connected to the output end of the second vertical cylinder 521. The gripper 52 and the actuating rod 51 are respectively connected to the output ends of the clamping cylinder 522 and the third vertical cylinder 511. The gripper 52 and the actuating lever 51 move synchronously in the longitudinal, lateral, and vertical directions under the drive of the longitudinal motor 54, the transverse motor 55, and the first vertical cylinder 57, and rotate synchronously under the drive of the rotary motor 56. They also move vertically in a straight line under the drive of the second vertical cylinder 521 and the third vertical cylinder 511, respectively. The gripper 52 also clamps or releases the release paper 400 under the drive of the clamping cylinder 522. Among them, the longitudinal motor 54 and the transverse motor 55 are both servo motors, and the first vertical cylinder 57, the second vertical cylinder 521, and the third vertical cylinder 511 are all slide cylinders.

[0054] Specifically, the gripper 52 includes two symmetrically arranged clamps 52a, and the actuating lever 51 is approximately L-shaped and located at the relative center of the two clamps 52a. Multiple vertically arranged ribs are evenly distributed on the clamping surface of the clamps 52a, which not only improves the stability of the clamping but also effectively reduces the contact area, facilitating the removal of the torn release paper 400. Furthermore, to facilitate the removal of the release paper 400, an air outlet is provided on the clamping surface of the clamps 52a and connected to an air source, thereby blowing the torn release paper 400 away from the clamps 52a more quickly. Correspondingly, an upward-opening waste paper collection box 59 is arranged beside the positioning frame 58 to receive the release paper 400 thrown by the gripper 52.

[0055] In operation, the gripper 52 and the actuating rod 51 move synchronously in the longitudinal, transverse, and vertical directions under the drive of the longitudinal motor 54, the transverse motor 55, and the first vertical cylinder 57, respectively, to approach the sheet material 500 mounted on the middle frame 300, specifically moving to the side of the sheet material 500 from the inner side of the middle frame 300. The actuating rod 51 is then driven by the third vertical cylinder 511 to move vertically to below the tilted release paper 400. The gripper 52 and the actuating rod 51 also move synchronously in the longitudinal direction under the drive of the longitudinal motor 54, causing the actuating rod 51 to come into contact with the release paper 400. At this point, the gripper 52 moves directly above the release paper 400. Subsequently, the actuating rod 51 moves upward under the drive of the third vertical cylinder 511 to straighten the tilted release paper 400 along the inner wall of the middle frame 300 until the release paper 400 is upright. Subsequently, the gripper 52 moves downward under the drive of the second vertical cylinder 521, and clamps the release paper 400 under the drive of the clamping cylinder 522. The actuating rod 51 continues to move upward under the drive of the third vertical cylinder 511 to avoid obstruction, and rotates synchronously with the gripper 52 under the drive of the rotary motor 56, with a rotation angle of approximately 3-5°. The transverse motor 55 and the first vertical cylinder 57 then drive the gripper 52 to move in both the transverse and vertical straight lines, rotating the release paper 400. The release paper 400 at a certain angle is pulled away from the assembly hole 301 and then pulled upward, thereby tearing the release paper 400 off the mesh 200. Finally, the gripper 52 is driven by the transverse motor 55 to move laterally above the waste paper collection box 59. The gripping cylinder 522 drives the two grippers 52a of the lower gripper 52 to move back to back to release the release paper 400 and blow the torn release paper 400 into the waste paper collection box 59.

[0056] Compared with the prior art, the feeding device 20, the pressure holding device 40 and the film peeling device 50 of the mounting machine 100 of the present invention are arranged sequentially along the conveying direction of the belt conveyor 10. An assembly device 30 is also arranged between the belt conveyor 10 and the feeding device 20. The overall layout of the machine is reasonable and compact. The middle frame 200 is automatically conveyed by the belt conveyor 10, and the mesh 200 is automatically fed by the feeding device 20. Specifically, at least one mesh 200 is attached to the release paper 400 to form a sheet 500. Then, each sheet 500 is attached at equal intervals between the bottom belt 600 and the top film 700 and coiled into a roll to form a material roll. In use, the drive mechanism 21 of the feeding device 20 drives the material roll 800 to rotate, so that the peeling table 22 can peel the sheet 500 on the winding material roll 800 one by one to the receiving table 23 arranged opposite to it, which facilitates the assembly device 30 to pick up and deliver the peeled sheet 500. The roll feeding method is different from the existing sheet feeding method, which effectively reduces the material change frequency, has high feeding efficiency and accurate positioning, and is suitable for the high efficiency requirements of automated production lines. The assembly device 30 uses a suction head 31 to apply the sucked-up mesh 200 at an angle to the assembly hole 301 of the middle frame 300. After application, the pressure head 41 of the pressure holding device 40 applies pressure at an angle to the mesh 200 assembled in the assembly hole 301, effectively strengthening the adhesion between the mesh 200 and the limited and relatively irregularly shaped assembly hole 301, thereby improving the stability of the assembly and effectively preventing the mesh 200 from shifting when the film-tearing device 60 removes the release paper 400. During film removal, the film-tearing device 60 also uses a toggle rod 61 to straighten the release paper 400 of the tilted sheet 500, and uses a gripper 62 to hold the release paper 400 and rotate and move it to remove the release paper 400 from the mesh 200. The machine has a simple overall structure and can automatically feed and assemble the middle frame 300 and the mesh 200. During the mounting, pressure holding and film peeling processes, there is no need to tilt the middle frame 300, which effectively simplifies the structure. Moreover, it can perform peeling, mounting, pressure holding and film peeling operations on multiple meshes 200 at a time, with high assembly accuracy and high efficiency.

[0057] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A mounting machine for mounting mesh into mounting holes in the middle frame of a mobile phone, characterized in that, At least one mesh is bonded to release paper to form a sheet, and multiple sheets are bonded at equal intervals between the bottom tape and the top film and coiled into a roll to form a material roll. The mounting machine includes a belt conveyor line arranged on the machine table, a feeding device, a pressure holding device, and a film peeling device arranged sequentially on the machine table along the conveying direction of the belt conveyor line, and an assembly device arranged between the belt conveyor line and the feeding device. The belt conveyor line is used to sequentially convey the middle frame through the feeding device, the pressure holding device, and the film peeling device. The feeding device includes a drive mechanism and oppositely arranged peeling devices. The assembly includes a stripping table and a receiving table. The driving mechanism drives the material roll to rotate, allowing the stripping table to peel the sheets from the wound material roll one by one onto the receiving table. The assembly device picks up the sheets from the receiving table using a suction head and attaches the mesh on the sheets at an angle into the assembly holes of the middle frame. The pressure head of the pressure holding device presses the mesh in the assembly holes at an angle. The film-tearing device uses a lever to straighten the release paper of the tilted sheet and clamps the release paper with jaws, causing the clamped release paper to rotate and move, so as to... The release paper is peeled off the mesh; the film-peeling device further includes a support base mounted on the machine base, a longitudinal motor mounted on the support base, a transverse motor connected to the output end of the longitudinal motor, a rotary motor connected to the output end of the transverse motor, a first vertical cylinder connected to the output end of the rotary motor, a positioning frame connected to the output end of the first vertical cylinder, a second vertical cylinder and a third vertical cylinder spaced apart on two opposite sides of the positioning frame, and a clamping cylinder connected to the output end of the second vertical cylinder, wherein the clamping jaws and the... The actuating lever is connected to the output ends of the clamping cylinder and the third vertical cylinder respectively. The clamping cylinder is used to drive the jaws to clamp or release the release paper. The actuating lever is L-shaped and located at the relative center of the two symmetrically arranged jaws. The jaws and the actuating lever move along the longitudinal, lateral and vertical straight lines under the drive of the longitudinal motor, the transverse motor and the first vertical cylinder, and rotate under the drive of the rotary motor. They also move along the vertical straight line under the drive of the second vertical cylinder and the third vertical cylinder respectively.

2. The mounting machine as described in claim 1, characterized in that, The tilt angle of the suction head during assembly and the tilt angle of the pressure head during pressure holding both correspond to the tilt angle of the assembly hole.

3. The mounting machine as described in claim 1, characterized in that, The mounting machine also includes a top camera arranged above the receiving platform, a side camera arranged on the belt conveyor, and a bottom camera arranged between the belt conveyor and the assembly device. The top camera is used to identify the position coordinates of the sheet material on the receiving platform, the side camera is used to identify the position coordinates of the assembly hole, and the bottom camera is used to identify the position coordinates of the mesh picked up by the suction head.

4. The mounting machine as described in claim 3, characterized in that, Both the side camera and the bottom camera are arranged at an angle on the machine base, and the angle of the angle corresponds to the angle of the mounting hole.

5. The placement machine as described in claim 1, characterized in that, The mounting machine also includes a detection device arranged on the opposite rear side of the film-peeling device along the conveying direction of the belt conveyor. The detection device uses two detection cameras to detect the mounting accuracy of the mesh from both the inside and outside.

6. The placement machine as described in claim 1, characterized in that, The feeding device further includes a base with at least one mounting slot, and a top film reel for top film winding, a material roll reel for loading material rolls, and a bottom tape reel for bottom tape winding, all arranged at opposite rear ends of the base. The drive motor of the drive mechanism is connected to the top film reel, the material roll reel, and the bottom tape reel to drive them to rotate. The stripping table and the receiving table are arranged at opposite front ends of the base. The front end of the stripping table has a stripping section with a flat upper surface and a sloping lower surface. The top film at the starting end of the material roll loaded on the material roll reel is wound around the top film reel, and the bottom tape at the starting end of the material roll is wound around the stripping table and then around the bottom tape reel. Each piece of material on the bottom tape is peeled off from the bottom tape one by one under the traction force of the drive motor and the pushing force of the stripping section, and is pushed onto the receiving table.

7. The mounting machine as described in claim 1, characterized in that, The assembly device further includes a six-axis robot that drives the suction head back and forth between the receiving platform and the belt conveyor. The suction head includes a mounting base connected to the output end of the six-axis robot, a pull-back cylinder mounted on the upper end of the mounting base, a vacuum adsorption plate connected to the output end of the pull-back cylinder, and at least one vacuum nozzle mounted on the lower end of the mounting base. The adsorption surface of the vacuum nozzle is smaller than the adsorption surface of the vacuum adsorption plate, and the number of vacuum nozzles corresponds to the number of release paper meshes. The vacuum adsorption plate and the vacuum nozzles adsorb the release paper and the meshes, respectively.

8. The placement machine as described in claim 1, characterized in that, The pressure holding device further includes a support frame mounted on the machine base, a horizontal motor mounted on the support frame, a vertical motor connected to the output end of the horizontal motor, a cantilever arm connected to the output end of the vertical motor, a mounting plate mounted at an incline on the cantilever arm, a sliding plate slidably mounted on the opposite front end of the mounting plate, and a pressure sensor mounted on the opposite rear end of the mounting plate. A spring is connected between the opposite rear end of the sliding plate and the pressure sensor. A pressure head corresponding to the number of mesh threads on the release paper is arranged at the opposite front end of the sliding plate. The horizontal motor and the vertical motor are used to drive the pressure head to move in a horizontal and vertical straight line, respectively.

9. The placement machine as described in claim 1, characterized in that, The gripper includes two symmetrically arranged grippers. Multiple vertically arranged ribs are evenly distributed on the gripping surface of the grippers. An air outlet is also provided on the gripping surface of the grippers to blow the torn release paper away from the grippers.

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