Automatic assembly machine for earphone middle cover protective net

Abstract

The present invention discloses an automatic assembly machine for the middle cover net of earphones, wherein the stand of the automatic assembly machine is provided with at least two X-direction moving blocks movable in the X direction and at least two Y-direction moving blocks movable in the Y direction; the material tray is used to place the middle cover raw materials and finished products; the material taking and discharging mechanism is used to suck the middle cover raw materials on the material tray and put the finished products back into the material tray; the middle cover fixing mechanism is used to place the middle cover raw materials sucked by the material taking and discharging mechanism and fix the middle cover raw materials; the net sticking mechanism is used to clamp the net and stick the net to the middle cover raw materials; the net sticking pressing mechanism is used to press the net sticking to the middle cover raw materials; the CCD detection mechanism is used to detect whether the net sticking part of the middle cover net is qualified; the controller connects and controls the material taking and discharging mechanism, the net sticking mechanism, the net sticking pressing mechanism and the CCD detection mechanism. The present invention has high net sticking efficiency and easy control of precision.

Description

Technical Field

[0001] The invention relates to the field of automatic equipment processing, and in particular to an automatic assembly machine for a headphone middle cover protective net. Background Art

[0002] As a daily consumer electronic product, earphones are of many types and consumed in large quantities. During the production process, some processes need to be completed manually. Figure 1 As shown, the protective net 100 is an important protective structure for the hole for transmitting sound of the earphone and is an important part of the earphone. During the process of attaching it to the middle cover 200 and installing it, since the adhesive force of the protective net material on the adhesive film is relatively large, manual operation is usually required during the installation process, which has a low degree of automation and slow efficiency. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned defects in the prior art and provide an automatic assembly machine for the protective net of the middle cover of the earphone, which is used to complete the pasting of the protective net of the middle cover of the earphone and has high efficiency compared with manual operation.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0005] An automatic assembly machine for a middle cover protective net of an earphone comprises: a platform, on which are arranged at least two X-direction moving blocks movable in an X direction and at least two Y-direction moving blocks movable in a Y direction; a material tray connected to one of the Y-direction moving blocks and movable with the Y-direction moving block, for placing middle cover raw materials and finished products; a material taking and placing mechanism connected to one of the X-direction moving blocks and movable with the X-direction moving block, for sucking the middle cover raw materials on the material tray and placing the finished products back on the material tray; a middle cover fixing mechanism installed between the two Y-direction moving blocks The rack is used to place the middle cover raw material sucked by the material picking and placing mechanism and fix the middle cover raw material; the net sticking mechanism is connected with the X-axis moving block next to the material picking and placing mechanism and the Y-axis moving block next to the material tray, and is used to clamp the protective net and stick the protective net to the middle cover raw material; the net sticking and pressing mechanism is arranged in front of the middle cover fixing mechanism, and is used to press the protective net stuck on the middle cover raw material; the CCD detection mechanism is used to detect whether the net sticking part of the middle cover protective net is qualified; the controller is connected to and controls the material picking and placing mechanism, the net sticking mechanism, the net sticking and pressing mechanism and the CCD detection mechanism.

[0006] As a further improvement of the above technical solution:

[0007] The X-direction moving blocks and the Y-direction moving blocks are respectively provided with three blocks, the Y-direction moving blocks and the X-direction moving blocks in the middle position are connected to the net sticking mechanism, the other two X-direction moving blocks are connected to the material taking and releasing mechanism, the other two Y-direction moving blocks are connected to the material tray, and the middle cover fixing mechanism and the net sticking pressing mechanism are provided on the stand between the two adjacent Y-direction moving blocks.

[0008] An X-direction screw is provided in the X-direction of the stage, the at least two X-direction moving blocks are slidably connected to the X-direction screw, and an X-direction servo motor is provided on the X-direction moving block, and the X-direction servo motor is connected to a controller;

[0009] At least two mutually parallel Y-axis screw rods are arranged on the platform, and any one end of the at least two Y-axis screw rods is connected to a Y-axis servo motor, and the at least two Y-axis moving blocks are slidably connected to the Y-axis screw rods, and the Y-axis servo motor is connected to a controller.

[0010] The material taking and placing mechanism comprises an X-direction cylinder and a U-shaped chuck, wherein the X-direction cylinder is fixedly connected to the X-direction moving block, the U-shaped chuck is connected to the push rod of the X-direction cylinder, and suction heads movable along the Z direction are connected to both side plates of the U-shaped chuck.

[0011] The middle cover fixing mechanism includes a support seat, a middle cover positioning block, a tightening cylinder and a fixing rod. The support seat is fixedly set on the stand, the middle cover positioning block and the tightening cylinder are set on the support seat, the middle cover positioning block is used to place the middle cover of the earphone, and the fixing rod is connected to the tightening cylinder. After the fixing rod is extended forward, it can tighten the middle cover on the middle cover positioning block.

[0012] The net pasting mechanism includes a net feeding device, a net pasting device and a net calibration device. The net feeding device is connected to the Y-direction moving block and can move with the Y-direction moving block; the net pasting device is connected to the X-direction moving block and can move with the X-direction moving block, and is used to clamp the net on the net feeding device and paste the net on the middle cover material; the net calibration device is used to calibrate the position of the net before the net pasting device pastes the net.

[0013] The net protection material supply device comprises a pallet, a net protection positioning fixture and a net protection material supply film disc, the pallet is fixedly connected to the Y-axis moving block, the net protection positioning fixture is arranged on the pallet, and the net protection material supply film disc is installed on the net protection positioning fixture.

[0014] The net-pasting device comprises a guide post, a first Z-direction cylinder, a Z-direction movable guide plate, a clamp, a finger cylinder, a Z-direction cylinder with a magnetic suction nozzle and a magnetic suction nozzle. The guide post and the first Z-direction cylinder are connected to the X-direction movable block, and the Z-direction movable guide plate is slidably connected to the guide post and connected to the first Z-direction cylinder; the finger cylinder is connected to the Z-direction movable guide plate, the clamp comprises two clamping plates, the two clamping plates are respectively connected to two fingers of the finger cylinder, the clamping plates are connected with an arc-shaped side plate extending downward, the curvature of the arc-shaped side plate is consistent with the curvature of the two ends of the net, and a convex edge for supporting the net is arranged at the bottom of the arc-shaped side plate; the Z-direction cylinder with a magnetic suction nozzle is fixedly connected to the Z-direction movable guide plate and can move with the Z-direction movable guide plate, the magnetic suction nozzle is connected to the Z-direction cylinder with a magnetic suction nozzle and is located above the clamp, and the end of the magnetic suction nozzle is consistent with the shape and size of the net.

[0015] The protective net positioning device includes a pin cylinder, a pin, a positioning cylinder, cylinder fingers, a left positioning clamp and a right positioning clamp. The pin cylinder is arranged on the protective net feeding device. The pin is telescopically connected to the pin cylinder and can be used to push the protective net from the clamp into the magnetic suction nozzle; the positioning cylinder is connected to the cylinder fingers and is used to control the opening and closing of the cylinder fingers. The lower ends of the left positioning clamp and the right positioning clamp are connected to the cylinder fingers and open and close with the opening and closing of the cylinder fingers. When the left positioning clamp and the right positioning clamp are closed, a groove consistent with the shape and size of the protective net is formed, which is used to clamp the protective net at the end of the magnetic suction nozzle.

[0016] The web pressing mechanism includes a Z-direction guide rail, a connecting push plate, a Y-direction cylinder, a second Z-direction cylinder and a pressing rod. The Z-direction guide rail is fixed on the stand, the connecting push plate is movably connected to the Z-direction guide rail and connected to the Y-direction cylinder, the second Z-direction cylinder is fixedly connected to the connecting push plate, and the pressing rod is connected to the second Z-direction cylinder and is controlled to move up and down by the second Z-direction cylinder.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The present invention comprises a stand, a material tray, a material taking and discharging mechanism, a middle cover fixing mechanism, a net pasting mechanism, a net pasting pressing mechanism and a controller. After the material tray is loaded with materials, the material taking and discharging mechanism absorbs the middle cover raw materials and fixes them on the middle cover fixing mechanism, the net pasting mechanism extracts the protective net and pastes the net, and after the net is pasted, the net pasting pressing mechanism presses the protective net, and the whole device has high net pasting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention and are not limitations of the present invention.

[0020] Figure 1 It is a schematic diagram of the decomposed structure of the headset.

[0021] Figure 2 It is a structural schematic diagram of the present invention.

[0022] Figure 3 It is a top view of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the stand of the present invention.

[0024] Figure 5 It is a structural schematic diagram of a material tray of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the material taking and placing mechanism of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the middle cover fixing mechanism of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the net sticking mechanism of the present invention.

[0028] Fig. 9 It is a schematic diagram of the connection between the clamp and the finger cylinder of the screen sticking mechanism of the present invention.

[0029] Fig.10 It is a structural schematic diagram of a net guarding positioning device of a net sticking mechanism of the present invention.

[0030] Fig.11 It is a structural schematic diagram of the net-sticking and pressing mechanism of the present invention.

[0031] Fig.12 It is a bottom view of the net-sticking and pressing mechanism of the present invention.

[0032] Fig.13 It is a structural schematic diagram of the CCD detection mechanism of the present invention.

[0033] Numbers in the figure: 1, stand; 11, X-direction moving block; 12, Y-direction moving block; 13, X-direction screw; 14, X-direction servo motor; 15, Y-direction screw; 16, Y-direction servo motor; 17, fixed plate; 2, material tray; 3, material taking and releasing mechanism; 31, X-direction cylinder; 32, U-shaped clamp; 33, suction head; 34, positioning block; 35, connecting block; 36, guide groove; 37, support rail; 4, middle cover fixing mechanism; 41, support seat; 42, middle cover positioning block; 43, top tightening cylinder; 44, fixing rod; 5, net sticking mechanism; 51, net protection material feeding device; 511, tray; 512, net protection positioning fixture; 513, net protection material feeding film tray; 52, net protection net sticking device; 521, guide column; 522, first Z-direction cylinder; 523, Z-direction moving guide plate; 524, clamp ;5241, curved side plate;5242, convex edge;5243, clamping plate;525, finger cylinder;526, Z direction cylinder with magnetic nozzle;527, with magnetic nozzle;528, connecting plate;529, Z direction connecting plate with magnetic nozzle;53, net protection calibration device;531, ejector cylinder;532, ejector;533, calibration cylinder;534, cylinder finger;535, left calibration clamp;536, right calibration clamp;6, net pressing mechanism;61, Z direction guide rail;62, connecting push plate;63, Y direction cylinder;64, second Z direction cylinder;65, clamping rod;66, slider;67, bottom plate;68, reinforcing plate;69, connecting top plate;610, spring;7, CCD detection mechanism;71, lens mount;72, CCD lens;73, bracket;74, display screen. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the technical solution of the present invention is further described in detail in a non-limiting manner in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figure 2 and Figure 3 As shown, the automatic assembly machine for the middle cover net of the earphone of this embodiment includes a stand 1, a material tray 2, a material dispensing mechanism 3, a middle cover fixing mechanism 4, a net sticking mechanism 5, a net sticking pressing mechanism 6, a controller and a CCD detection mechanism 7. The material tray 2 is used to place the middle cover raw materials and finished products; the material dispensing mechanism 3 is used to absorb the middle cover raw materials on the material tray 2 and put the finished products back into the material tray 2; the middle cover fixing mechanism 4 is used to place the middle cover raw materials and fix the middle cover raw materials; the net sticking mechanism 5 is used to stick the net to the middle cover raw materials; the net sticking pressing mechanism 6 is used to press the net sticking to the middle cover raw materials; the controller is connected with the material dispensing mechanism 3, the net sticking mechanism 5, the net sticking pressing mechanism 6 and the CCD detection mechanism 7; the CCD detection mechanism 7 is used to detect whether the finished products are qualified; the controller is connected with and controls the material dispensing mechanism 3, the net sticking mechanism 5, the net sticking pressing mechanism 6 and the CCD detection mechanism 7.

[0036] like Figure 4 As shown, an X-direction screw rod 13 is provided in the X direction of the stage 1, and three X-direction moving blocks 11 are slidably connected to the X-direction screw rod 13, and an X-direction servo motor 14 is provided on each X-direction moving block 11, and a fixing plate 17 is provided on each X-direction moving block 11 for connecting with the material taking and releasing mechanism 3 or the net sticking mechanism 5. Three mutually parallel Y-direction screw rods 15 are arranged side by side on the stage 1, and a Y-direction servo motor 16 is connected to any end of each Y-direction screw rod 15, and a Y-direction moving block 12 is slidably connected to each Y-direction screw rod 15. The X-direction servo motor 14 and the Y-direction servo motor 16 are connected to the controller, and the start and stop of the motors are controlled by the controller.

[0037] like Figure 5 As shown, there are two trays 2, which are respectively connected to the Y-direction moving blocks 12 located on the outside, and the tray 2 can move with the movement of the Y-direction moving blocks. A groove is provided on the tray 2 for placing the middle cover raw materials and the finished product with the screen attached.

[0038] like Figure 6 As shown, there are two pick-up and discharge mechanisms 3, which are respectively connected to the X-direction moving block 11 located on the outside. The pick-up and discharge mechanism 3 includes an X-direction cylinder 31 and a U-shaped chuck 32. The X-direction cylinder 31 is fixedly connected to the fixed plate 17 on the X-direction moving block 11 through a positioning block 34. The U-shaped chuck 32 is connected to the push rod of the X-direction cylinder 31 through a connecting block 35. Suction heads 33 that can move along the Z direction are connected to both side plates of the U-shaped chuck 32. During the web pasting process, one of them is used to suck the middle cover raw material, and the other is used to suck the finished product after the web pasting is completed. In order to ensure the rigidity and stability of the pick-up and discharge mechanism 3, a guide groove 36 is set below the X-direction cylinder 31, and a support guide rail 37 connected to the push rod of the X-direction cylinder 31 is slidably connected to the groove of the guide groove 36. After the middle cover raw material of the material tray 2 is loaded, the X-axis moving block 11 drives the picking and discharging mechanism to move above the material tray 2, one of the suction heads 33 extends in the Z direction and sucks the middle cover raw material on the material tray 2, and the X-axis moving block 11 starts again to drive the picking and discharging mechanism 3 to move above the middle cover fixing mechanism 4, places the middle cover raw material on the middle cover positioning block 42, and releases and recycles the suction head 33.

[0039] like Figure 7As shown, the middle cover fixing mechanism 4 includes a support seat 41, a middle cover positioning block 42, a tightening cylinder 43 and a fixing rod 44. The support seat 41 is fixedly set on the stand 1, and the middle cover positioning block 42 and the tightening cylinder 43 are set on the support seat 41. The middle cover positioning block 42 is roughly trapezoidal, and two protrusions are set above the middle cover positioning block 42. When the middle cover is placed on the middle cover positioning block 42, the two protrusions protrude from the two holes on the middle cover. The fixing rod 44 is connected to the tightening cylinder 43. When the material taking and discharging mechanism 3 places the middle cover raw material on the middle cover positioning block 42, the tightening cylinder 43 is started, and the fixing rod 44 extends forward to press the middle cover to ensure that the middle cover is fixed.

[0040] like Figure 8 As shown, the net sticking mechanism 5 includes a net feeding device 51, a net sticking device 52 and a net positioning device 53. The net feeding device 51 is connected to the Y-axis moving block 12 at the middle position, the net sticking device 52 is connected to the X-axis moving block 11 at the middle position, and the net positioning device 53 is arranged on the net feeding device 51, and is used to correct the position of the net feeding material clamped by the net sticking device 52.

[0041] The net feeding device 51 includes a tray 511, a net positioning fixture 512 and a net feeding film plate 513. The tray 511 is fixedly connected to the Y-direction moving block 12 at the middle position, the net positioning fixture 512 is arranged on the tray 511, and the net feeding film plate 513 is installed on the net positioning fixture 512.

[0042] The net guard and net attaching device 52 includes a guide post 521, a first Z-direction cylinder 522, a Z-direction movable guide plate 523, a clamp 524, a finger cylinder 525, a Z-direction cylinder with a magnetic nozzle 526, and a magnetic nozzle 527. The guide post 521 and the first Z-direction cylinder 522 are connected to the fixed plate 17 on the X-direction movable block 11 through a connecting plate 528. The Z-direction movable guide plate 523 is slidably connected to the guide post 521 and connected to the first Z-direction cylinder 522, and the finger cylinder 525 is connected to the Z-direction movable guide plate 523, as shown in FIG. Fig. 9As shown, the clamp 524 includes two clamps 5243, which are respectively sleeved on the fingers of the finger cylinder 525. The clamps 5243 are connected to arc-shaped side plates 5241 extending downward. The arc of the arc-shaped side plates 5241 is consistent with the arc of the two ends of the protective net. The bottom of the arc-shaped side plates 5241 is provided with a convex edge 5242 for supporting the protective net. The setting of the convex edge 5242 facilitates the peeling of the protective net. The Z-direction cylinder 526 with a magnetic nozzle is fixedly connected to the Z-direction movable guide plate 523 and can move with the Z-direction movable guide plate 523. The magnetic nozzle 527 is connected to the Z-direction cylinder 526 with a magnetic nozzle and is located above the clamp 524. The end of the magnetic nozzle 527 is consistent with the shape and size of the protective net. In order to ensure the stability of the magnetic nozzle 527, a magnetic nozzle Z-direction connecting plate 529 is provided between the magnetic nozzle 527 and the magnetic nozzle Z-direction cylinder 526, and the magnetic nozzle Z-direction connecting plate 529 is slidably connected to the Z-direction moving guide plate 523.

[0043] like Fig.10 As shown, the net alignment device 53 includes an ejector cylinder 531, an ejector 532, an alignment cylinder 533, a cylinder finger 534, a left alignment clamp 535 and a right alignment clamp 536. The ejector cylinder 531 is arranged on the tray 511, and the ejector 532 is retractably connected to the ejector cylinder 531 and can be used to push the net from the clip 524 into the magnetic suction nozzle 527. The alignment cylinder 533 is connected to the cylinder finger 534 and is used to control the opening and closing of the cylinder finger 534. The lower ends of the left alignment clamp 535 and the right alignment clamp 536 are connected to the cylinder finger 534 and open and close with the opening and closing of the cylinder finger 534. The left alignment clamp 535 and the right alignment clamp 536 are closed to form a groove consistent with the shape and size of the net, which is used to clamp the net at the end of the magnetic suction nozzle 527.

[0044] The working process of the web pasting mechanism 5 is as follows: the X-direction moving block 11 and the Y-direction moving block 12 connected to the web pasting mechanism 5 move simultaneously, positioning the clip 524 on the web on the web incoming film plate 513, the first Z-direction cylinder 522 starts to move the clip 524 to the web, the finger cylinder 525 starts, the clip 524 clamps the web, the first Z-direction cylinder 522 starts again to lift the clip 524, and peels off the web. The X-direction moving block 11 and the Y-direction moving platform 12 move to move the clip 524 above the web calibration device 53, and place the web above the ejector pin 532, start the Z-direction cylinder 526 with a magnetic suction nozzle, and place the magnetic suction nozzle 527 close to the web clamped by the clip 524, the ejector pin cylinder 531 starts to push the ejector pin 532 upward, and push the web into the magnetic suction nozzle 527, and the magnetic suction nozzle 527 starts to absorb the web. The X-axis moving block 11 and the Y-axis moving block 12 move again, and the magnetic suction nozzle 527 is moved to the middle of the left calibration clamp 535 and the right calibration clamp 536, and the calibration cylinder 533 is started, and the cylinder finger 534 closes the left calibration clamp 535 and the right calibration clamp 536, so that the protective net is matched with the end of the magnetic suction nozzle 527. The X-axis moving block 11 moves, and the protective net is brought to the middle cover positioning block 42, and the protective net is fitted with the middle cover, and the magnetic suction nozzle 527 is released and reset.

[0045] like Fig.11 Shown and Fig.12 As shown, the web pressing mechanism 6 includes a Z-direction guide rail 61, a connecting push plate 62, a Y-direction cylinder 63, a second Z-direction cylinder 64 and a pressing rod 65. The Z-direction guide rail 61 is fixed on the stand 1, and a slider 66 that can slide along the guide rail is arranged on the Z-direction guide rail 61, a bottom plate 67 is connected between the sliders 66, and a reinforcing plate 68 is connected to the bottom plate 67. The connecting push plate 62 is connected to the bottom plate 67 and the reinforcing plate 68, and is also connected to the Y-direction cylinder 63. The second Z-direction cylinder 64 is fixedly connected to the connecting push plate 62, and the pressing rod 65 is connected to the second Z-direction cylinder 64 through the connecting top plate 69. At the same time, a spring 610 is arranged between the pressing rod 65 and the connecting top plate 69 for controlling the pressing force and maintaining the pressure with constant force. The bottom plate 67 and the reinforcing plate 68 can improve the stability of the connecting push plate 62 when it moves.

[0046] like Fig.13 As shown, the CCD detection mechanism 7 includes a lens holder 71 and a CCD lens 72 mounted on the lens holder 71. The lens holder 71 is fixed on the stand 1 through a bracket 73 and is located above the middle cover positioning block 42. The lens holder 71 is used for signal processing. When the web pressing mechanism 6 completes the pressing, the CCD lens 72 starts to take pictures of the web-pasting part for comparison to detect whether the web-pasting is qualified. If the test result is unreasonable, the unqualified product is placed in the unqualified product area. In order to display the test result, a display screen 74 is also provided.

[0047] The controller adopts a PLC controller, and all the action elements of the device are controlled by the PLC controller, such as the start and stop of each servo motor and cylinder, and the duration of the servo motor or cylinder in a certain direction, etc. In order to improve applicability, the display screen 74 can also be used to input the above parameters.

[0048] The working process of the whole device is as follows: the middle cover raw material is placed in the material tray 2, the X-direction moving block 11 connected to the material taking and placing mechanism 3 drives the material taking and placing mechanism 3 to move, controls one of the suction heads 33 to extend in the Z direction, and sucks the middle cover raw material in the material tray 2. After sucking is completed, the X-direction moving block 11 connected to the material taking and placing mechanism 3 moves to make the suction head 33 stop above the middle cover positioning block 42, controls the suction head 33 to move downward to place the middle cover raw material on the middle cover positioning block 42, and releases the suction head 33. The tightening cylinder 43 of the middle cover fixing mechanism 4 is started, so that the fixing rod 44 extends forward to press the middle cover to ensure the fixation of the middle cover. The X-direction moving block 11 and the Y-direction moving block 12 connected to the web pasting mechanism 5 move to position the clip 524 on the web on the web incoming film disk 513. The first Z-direction cylinder 522 is started to move the clip 524 to the web. The finger cylinder 525 is started to clamp the web. The first Z-direction cylinder 522 is started again to lift the clip 524 and peel off the web. The X-direction moving block 11 and the Y-direction moving block 12 connected to the web pasting mechanism 5 move to move the clip 524 above the web calibration device 53 and place the web above the ejector pin 532. The Z-direction cylinder 526 with a magnetic suction nozzle is started to bring the magnetic suction nozzle close to the web clamped by the clip 524. The ejector pin cylinder 531 is started to push the ejector pin 532 upward to push the web into the magnetic suction nozzle 527. The magnetic suction nozzle 527 is started to adsorb the web. The X-direction moving block 11 and the Y-direction moving block 12 connected to the web-attaching mechanism 5 move again, and the magnetic suction nozzle 527 is moved to the middle of the left and right alignment clamps. The alignment cylinder 533 is started, and the cylinder finger 534 drives the left and right alignment clamps to close, so that the protective net and the end of the magnetic suction nozzle 527 are matched. The X-direction moving block 11 connected to the web-attaching mechanism 5 moves, and the protective net is brought to the middle cover positioning block 42, and the protective net is attached to the middle cover, and the magnetic suction nozzle 527 is released and reset. The Y-direction cylinder 63 is started, and the push plate 62 is connected to push the slider 66 to move along the Y-direction guide rail, so that the clamping rod 65 reaches the top of the middle cover that has completed the web-attaching. The second Z-direction cylinder 64 is started, and the clamping rod 65 moves downward to clamp the protective net. After the pressure holding time is up, the second Z-direction cylinder 64 is released, and the clamping rod 65 leaves the surface of the protective net. The Y-direction cylinder 63 is released, and the web-attaching clamping mechanism 6 returns to its original position. The CCD lens 72 takes a picture of the web-attaching part and transmits it back to the lens holder 71 for processing. The lens holder 71 processes the picture and displays the result on the display screen 74. Among them, after the material taking and discharging mechanism 3 places the first middle cover raw material on the middle cover positioning block 42, it returns to the material tray 2 to take the material, that is, one of the suction heads 33 sucks the middle cover raw material again. When the CCD detection mechanism 7 passes the detection, the material taking and discharging mechanism 3 moves to the top of the middle cover positioning block 42, and the other idle suction head 33 sucks the finished product, and then the X-direction moving block 11 connected to the material taking and discharging mechanism 3 moves, so that the suction head 33 sucking the middle cover raw material is located above the middle cover positioning block 42, and the middle cover raw material is placed on the middle cover positioning block 42.Finally, the X-direction moving block 11 connected to the material taking and placing mechanism 3 drives the material taking and placing mechanism 3 back to the top of the material tray 2, and places the finished product in the empty groove of the material tray 2, completing the first middle cover mesh pasting work. For unqualified finished products, they are placed in the unqualified area. The middle cover mesh pasting work is repeated in this way.

[0049] The present invention absorbs the middle cover raw material on the material tray 2 through the material taking and discharging mechanism 3, and then the net pasting mechanism 5, under the control of the controller, pastes the middle covers on the middle cover fixing mechanisms 4 on the left and right sides according to the left and right sequence, so as to improve the net pasting efficiency; after the net pasting is completed, the net pasting clamping mechanism 6 presses and maintains the pressure on the protective net to ensure the attachment quality; after the pressure holding time is up, the net pasting clamping mechanism 6 is released, the CCD detection mechanism 7 detects the quality of the net pasting and displays the detection result on the display screen 74. If it is qualified, the material taking and discharging mechanism 3 takes the finished product and puts it back into the material tray 2.

[0050] It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic assembly machine for earphone middle cover protection net, characterized in that: include: A stand (1), wherein the stand (1) is provided with at least two X-direction moving blocks (11) movable along the X direction, and at least two Y-direction moving blocks (12) movable along the Y direction; A material tray (2) is connected to one of the Y-direction moving blocks (12) and can move with the Y-direction moving block (12), and is used to place middle cover raw materials and finished products; A material taking and discharging mechanism (3) is connected to one of the X-direction moving blocks (11) and can move with the X-direction moving block (11), and is used to suck the middle cover raw material on the material tray (2) and put the finished product back into the material tray (2); The middle cover fixing mechanism (4) is installed on the platform (1) between the two Y-direction moving blocks (12) and is used to place the middle cover raw material sucked by the material taking and placing mechanism and fix the middle cover raw material; The net sticking mechanism (5) is connected to the X-direction moving block next to the material taking and placing mechanism and the Y-direction moving block next to the material tray, and is used to clamp the protective net and stick the protective net to the middle cover material; A net pressing mechanism (6) is arranged on the front side of the middle cover fixing mechanism (4) and is used to press the protective net against the middle cover material; A CCD detection mechanism (7) is used to detect whether the mesh attachment part of the middle cover is qualified; A controller, connected to and controlling the material taking and releasing mechanism (3), the web attaching mechanism (5), the web attaching and pressing mechanism (6) and the CCD detection mechanism (7); The net-attaching mechanism (5) comprises a net-feeding device (51), a net-attaching device (52) and a net-calibrating device (53); the net-feeding device (51) is connected to a Y-direction moving block (12) and can move with the Y-direction moving block (12); the net-attaching device (52) is connected to an X-direction moving block (11) and can move with the X-direction moving block (11), and is used to clamp the net on the net-feeding device (51) and attach the net to the middle cover material; the net-calibrating device (53) is used to calibrate the position of the net before the net-attaching device (52) attaches the net. The net protection and net pasting device (52) comprises a guide column (521), a first Z-direction cylinder (522), a Z-direction movable guide plate (523), a clamp (524), a finger cylinder (525), a Z-direction cylinder with a magnetic suction nozzle (526) and a magnetic suction nozzle (527); the guide column (521) and the first Z-direction cylinder (522) are connected to the X-direction movable block (11); the Z-direction movable guide plate (523) is slidably connected to the guide column (521) and is connected to the first Z-direction cylinder (522); the finger cylinder (525) is connected to the Z-direction movable guide plate (523); the clamp (524) comprises two clamping plates (5243); the two clamping plates (5244) 5243) are respectively connected to the two fingers of the finger cylinder (525), the clamp (5243) is connected to a downwardly extending arc-shaped side plate (5241), the curvature of the arc-shaped side plate (5241) is consistent with the curvature of the two ends of the protective net, and the bottom of the arc-shaped side plate (5241) is provided with a convex edge (5242) for supporting the protective net; the Z-direction cylinder (526) with a magnetic suction nozzle is fixedly connected to the Z-direction movable guide plate (523) and can move with the Z-direction movable guide plate (523), the magnetic suction nozzle (527) is connected to the Z-direction cylinder (526) with a magnetic suction nozzle and is located above the clamp (524), and the end of the magnetic suction nozzle (527) is consistent with the shape and size of the protective net; The net guarding alignment device (53) comprises an ejector cylinder (531), an ejector pin (532), an alignment cylinder (533), a cylinder finger (534), a left alignment clamp (535) and a right alignment clamp (536); the ejector cylinder (531) is arranged on the net guarding material supply device (51); the ejector pin (532) is retractably connected to the ejector cylinder (531) and can be used to push the net guarding from the clamp (524) into the magnetic suction nozzle (527); The alignment cylinder (533) is connected to the cylinder finger (534) and is used to control the opening and closing of the cylinder finger (534). The lower ends of the left alignment clamp (535) and the right alignment clamp (536) are connected to the cylinder finger (534) and open and close with the opening and closing of the cylinder finger (534). When the left alignment clamp (535) and the right alignment clamp (536) are closed, a groove having the same shape and size as the protective net is formed, which is used to clamp the protective net at the end of the magnetic suction nozzle (527).

2. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: The X-direction moving blocks (11) and the Y-direction moving blocks (12) are respectively provided with three blocks, the Y-direction moving blocks (12) and the X-direction moving blocks (11) at the middle positions are connected to the web-attaching mechanism (5), the other two X-direction moving blocks (11) are connected to the material taking and releasing mechanism (3), the other two Y-direction moving blocks (12) are connected to the material tray (2), and the platform (1) between the two adjacent Y-direction moving blocks (12) is provided with a middle cover fixing mechanism (4) and a web-attaching pressing mechanism (6).

3. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: An X-direction screw rod (13) is arranged in the X-direction of the platform (1), the at least two X-direction moving blocks (11) are slidably connected to the X-direction screw rod (13), and an X-direction servo motor (14) is arranged on the X-direction moving block (11), and the X-direction servo motor (14) is connected to a controller; At least two mutually parallel Y-direction screw rods (15) are arranged on the platform (1), and any one end of the at least two Y-direction screw rods (15) is connected to a Y-direction servo motor (16). The at least two Y-direction moving blocks (12) are slidably connected to the Y-direction screw rods (15), and the Y-direction servo motor (16) is connected to a controller.

4. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: The material taking and placing mechanism (3) comprises an X-direction cylinder (31) and a U-shaped chuck (32); the X-direction cylinder (31) is fixedly connected to the X-direction moving block (11); the U-shaped chuck (32) is connected to a push rod of the X-direction cylinder (31); and suction heads (33) movable along the Z direction are connected to both side plates of the U-shaped chuck (32).

5. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: The middle cover fixing mechanism (4) comprises a support seat (41), a middle cover positioning block (42), a tightening cylinder (43) and a fixing rod (44); the support seat (41) is fixedly arranged on the stand (1); the middle cover positioning block (42) and the tightening cylinder (43) are arranged on the support seat (41); the middle cover positioning block (42) is used to place the middle cover of the earphone; the fixing rod (44) is connected to the tightening cylinder (43); and the fixing rod (44) can tighten the middle cover on the middle cover positioning block (42) after extending forward.

6. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: The net protection material supply device (51) comprises a tray (511), a net protection positioning fixture (512) and a net protection material supply film disk (513); the tray (511) is fixedly connected to the Y-axis moving block (12); the net protection positioning fixture (512) is arranged on the tray (511); and the net protection material supply film disk (513) is installed on the net protection positioning fixture (512).

7. The automatic assembly machine for the earphone middle cover protection net according to claim 1, characterized in that: The web pressing mechanism (6) comprises a Z-direction guide rail (61), a connecting push plate (62), a Y-direction cylinder (63), a second Z-direction cylinder (64) and a pressing rod (65); the Z-direction guide rail (61) is fixed on the stand (1); the connecting push plate (62) is movably connected to the Z-direction guide rail (61) and connected to the Y-direction cylinder (63); the second Z-direction cylinder (64) is fixedly connected to the connecting push plate (62); and the pressing rod (65) is connected to the second Z-direction cylinder (64) and is controlled to move up and down by the second Z-direction cylinder (64).

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