A marking and sorting device for mechanical keyboard master control chip

Abstract

The utility model discloses a mechanical keyboard main control chip is with marking sorting device, including workstation, main conveying line and shunt device, and the workstation its table top is sequentially provided with marking station and check station along the length direction, and the main conveying line is set up in the workstation table top, is used for conveying positioning fixture along linear path, the main conveying line is configured as the positioning fixture intermittent positioning to marking station and check station, wherein, the marking station is provided with laser marking mechanism in, is used for the each main control chip surface engraving mark information in positioning fixture, check station is provided with information identification mechanism in, is used for reading and verifying the marking content on each main control chip surface, and the shunt device includes the NG processing mechanism and moves away the subassembly of component for removing the positioning fixture of check station determination as NG to NG processing mechanism in the workstation table top. The utility model technical scheme is designed to realize the accurate separation and removal of defective products on line.

Description

Technical Field

[0001] This utility model relates to the field of laser marking technology, and in particular to a marking and sorting device for mechanical keyboard main control chips. Background Technology

[0002] As a crucial component of electronic products, the main control chip of a mechanical keyboard typically requires laser marking during the production process to identify important information such as batch number, serial number, and QR code. This is essential for product tracking, after-sales service, and quality control. Currently, after calibration, the entire batch of fixtures is often removed from the production line and defective products are manually sorted, a method with significant drawbacks.

[0003] Manual sorting not only disrupts continuous production line operation, but also presents two major technical challenges due to direct contact with chips: First, static electricity from the human body during operation can easily damage sensitive electronic components. Second, defective products left on the production line can contaminate subsequent workstations, causing marking misalignment or batch mixing. Utility Model Content

[0004] The main purpose of this invention is to provide a marking and sorting device for mechanical keyboard main control chips, which aims to achieve accurate online separation and removal of defective products.

[0005] To achieve the above objectives, the present invention proposes a marking and sorting device for mechanical keyboard main control chips, comprising:

[0006] The workbench has marking stations and verification stations arranged sequentially along its length.

[0007] A main conveyor line, located on the workbench surface, is used to convey positioning fixtures along a straight path. The positioning fixtures are used to fix the main control chips. The main conveyor line is configured to intermittently position the positioning fixtures to the marking station and the verification station. The marking station is equipped with a laser marking mechanism for engraving marking information on the surface of each main control chip within the positioning fixture. The verification station is equipped with an information recognition mechanism for reading and verifying the marking content on the surface of each main control chip.

[0008] The diversion device includes an NG processing mechanism and a transfer component disposed on the workbench surface. The transfer component is disposed on the side of the main conveyor line and is used to move the positioning fixture that is determined to be NG at the verification station away from the main conveyor line to the NG processing mechanism.

[0009] In one possible implementation, the positioning fixture includes a base and a plurality of receiving units disposed on the base. Each receiving unit has pin limiting structures on both sides of its bottom for fixing chip pins, and each receiving unit has an ejection clearance hole at the center of its bottom, the axis of which is perpendicular to the bottom surface of the receiving unit.

[0010] In one possible implementation, the NG processing mechanism includes:

[0011] A flipping component is used to receive and fix the positioning fixture from the transfer component, and drive the positioning fixture to change from a first state with the opening of the receiving unit facing upward to a second state with the opening facing downward.

[0012] The ejection execution assembly includes a robotic arm and an elastic pressing unit disposed at the end of the robotic arm;

[0013] When the positioning fixture is in the second state, the robotic arm can be positioned below the ejection clearance hole of the receiving unit, and the elastic pressing unit applies a vertical ejection force to the NG chip through the ejection clearance hole.

[0014] In one possible implementation, the diversion device further includes an NG return conveyor line, which is disposed on the workbench surface and parallel to the main conveyor line, with its input end connected to the output end of the NG processing mechanism and its output end extending to the starting loading position of the main conveyor line.

[0015] In one possible implementation, a dust removal mechanism is provided beside the marking station, the dust removal mechanism comprising:

[0016] The negative pressure dust removal assembly includes a dust removal hood installed at the marking station and a negative pressure pipeline connecting to the dust removal hood; and

[0017] The dust collection container is connected to the dust removal hood via a negative pressure pipeline.

[0018] This utility model's technical solution integrates a verification station with an automatic sorting mechanism, enabling online real-time full inspection of marking quality and accurate identification of NG products, thus solving the problem of low efficiency in traditional manual sorting. Simultaneously, based on the elastic pressing unit with ejection avoidance holes and non-contact ejection control, NG chips are vertically and orientedly removed in a flipped state, avoiding electrostatic discharge problems caused by manual operation. Furthermore, through the NG return conveyor line and the automatic fixture transfer and reset system, a closed loop of "marking-sorting-fixture recycling" is constructed to effectively improve the overall efficiency of the production line. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Fig. 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Fig. 2 This is a partially enlarged schematic diagram of an NG processing mechanism according to an embodiment of the present invention;

[0022] Fig. 3 A schematic diagram of the structure of a positioning fixture according to an embodiment of this utility model.

[0023] Explanation of icon numbers:

[0024] 1. Workbench; 11. Marking station; 12. Verification station; 2. Main conveyor line; 3. Laser marking mechanism; 4. Information recognition mechanism; 5. Positioning fixture; 51. Base; 52. Containing unit; 53. Pin limiting structure; 54. Ejection clearance hole; 6. Diversion device; 61. NG processing mechanism; 611. Tilting assembly; 612. Ejection execution assembly; 6121. Elastic pressing unit; 62. Transfer assembly; 63. NG return conveyor line; 7. Dust removal mechanism; 71. Negative pressure dust removal assembly; 72. Dust collection container.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] To address the problems in the background technology, this utility model proposes a marking and sorting device for mechanical keyboard main control chips, comprising:

[0028] Workbench 1, with marking station 11 and verification station 12 arranged sequentially along the length of its surface;

[0029] The main conveyor line 2, located on the workbench 1, is used to convey the positioning fixture 5 along a straight path. The positioning fixture 5 is used to fix the main control chip. The main conveyor line 2 is configured to intermittently position the positioning fixture 5 to the marking station 11 and the verification station 12. The marking station 11 is equipped with a laser marking mechanism 3 for engraving marking information on the surface of each main control chip within the positioning fixture 5. The verification station 12 is equipped with an information recognition mechanism 4 for reading and verifying the marking content on the surface of each main control chip.

[0030] The diversion device 6 includes an NG processing mechanism 61 and a transfer component 62 disposed on the workbench 1. The transfer component 62 is disposed on the side of the main conveyor line 2 and is used to move the positioning fixture 5, which is determined to be NG at the verification station 12, away from the main conveyor line 2 to the NG processing mechanism 61.

[0031] Combined with referenceFigs. 1-3 As shown, in this embodiment, its core structure includes three main parts: a workbench 1, a main conveyor line 2, and a diversion device 6. The workbench 1 is welded from a high-rigidity metal frame, and the table surface is precision ground to form a horizontal reference surface. A marking station 11 and a verification station 12 are sequentially integrated along the length of the table surface. The main conveyor line 2 is fixed to the center of the workbench 1 by bolts and consists of a synchronous belt drive system driven by a servo motor. The conveying path is strictly parallel to the long side of the workbench 1. Multiple sets of pneumatic positioning pins are embedded on the surface of the conveyor line, which, together with the positioning holes at the bottom of the fixture, achieve high positioning accuracy. The positioning fixture 5 has a matrix-arranged chip mounting slot on its top to prevent the main control chip from being locked. The main conveyor line 2 is controlled by a PLC to achieve intermittent stepping motion: when the fixture reaches the marking station 11, the conveyor line pauses and triggers the positioning pins to lock; after the process is completed, the locking is released and the device is moved to the next station.

[0032] The marking station 11 is equipped with a laser marking mechanism 3, which includes a fiber laser generator, a high-speed galvanometer system, and a focusing lens. After being deflected by the galvanometer, the laser beam is used to engrave marking information on the chip surface through a quartz glass window above the fixture. The engraved information includes, but is not limited to, batch numbers, serial numbers, and / or QR codes. The verification station 12 is equipped with an information recognition mechanism 4, consisting of an industrial camera, a ring LED light source, and an image processing unit. The camera lens axis is perpendicular to the chip surface. Once the fixture is in position, the camera captures an image of the marking area, extracts character information using an OCR algorithm, and compares it with data sent from the system. The verification result is either OK or NG (missing characters, blurred images, or incorrect content).

[0033] In addition, the diversion device 6 includes an NG processing mechanism 61 and a transfer assembly 62. The NG processing mechanism 61 is located downstream of the calibration station 12. The transfer assembly 62 adopts a gantry-type three-axis module, with a pneumatic gripper at its end for gripping the entire positioning fixture 5. When the information recognition mechanism 4 determines that the fixture is NG, the robotic arm first uses the moving gripper to move the entire fixture away from the main conveyor line 2 to the NG processing mechanism 61. Then, the NG product inside the fixture is removed by the NG processing mechanism 61, and then the fixture is transported back to the main conveyor line 2 by the transfer assembly 62. The OK fixture continues to flow along the main conveyor line 2 to the next process. This effectively ensures that unqualified main control chips can be rejected in a timely manner, preventing defective products from flowing downstream.

[0034] In one possible implementation, the positioning fixture 5 includes a base 51 and a plurality of receiving units 52 disposed on the base 51. Each receiving unit 52 has pin limiting structures 53 on both sides of its bottom for fixing chip pins, and each receiving unit 52 has an ejection clearance hole 54 at the center of its bottom, the axis of which is perpendicular to the bottom surface of the receiving unit 52.

[0035] Combined with reference Figs. 1-3 As shown, in this embodiment, the positioning fixture 5 includes a rectangular base 51 and matrix-arranged receiving units 52 distributed on the surface of the base 51. Symmetrical pin limiting structures 53 are machined on both sides of the bottom of the groove: this structure consists of two parallel V-shaped grooves, the groove spacing precisely matching the standard spacing of the chip pins. The tilt angle of the V-shaped groove sidewalls achieves damage-free pin clamping through elastic deformation, and the clamping force is controlled within a certain range. An ejection clearance hole 54 is provided in the center of the groove, its axis perpendicular to the bottom surface of the receiving unit 52, and the hole opening is chamfered to eliminate stress concentration. Furthermore, a conductive silicone pad is attached to the inner wall of the receiving unit 52, which can both buffer the impact of chip placement and provide a path for electrostatic discharge. A reinforcing rib mesh structure is provided on the back of the base 51 to improve the overall bending stiffness.

[0036] In one possible implementation, the NG processing mechanism 61 includes:

[0037] The flipping component 611 is used to receive and fix the positioning fixture 5 from the transfer component 62, and drive the positioning fixture 5 from a first state with the opening of the receiving unit 52 facing upward to a second state with the opening facing downward.

[0038] The ejection execution assembly 612 includes a robotic arm and an elastic pressing unit 6121 disposed at the end of the robotic arm;

[0039] When the positioning fixture 5 is in the second state, the robotic arm can be positioned below the ejection clearance hole 54 of the receiving unit 52, and the elastic pressing unit 6121 applies a vertical ejection force to the NG chip through the ejection clearance hole 54.

[0040] Combined with reference Figs. 1-3 As shown, in this embodiment, the NG processing mechanism 61 consists of a flipping assembly 611 and an ejection execution assembly 612. The flipping assembly 611 includes a servo motor-driven rotary clamping platform. This flipping assembly 611 uses a servo motor-driven precision harmonic reducer, and the output shaft is connected to the rotary platform via a flange. Two sets of pneumatic clamping units are symmetrically arranged on both sides of the platform. When the positioning fixture 5 is moved to the center of the rotary platform, the photoelectric sensor triggers a signal, and the two cylinders extend synchronously. After clamping in place, the magnetic ring switch built into the cylinder provides a feedback signal, and the servo motor starts the rotation program.

[0041] The ejection actuator 612 employs a multi-axis collaborative robotic arm with an integrated ejection module at its end, housing a polyurethane elastic ejector head. Guided by a machine vision positioning system, the robotic arm ensures the ejector head axis is coaxial with the ejection clearance hole 54 axis. Specifically, as the robotic arm moves directly below the target receiving unit 52, the ejector head rises to a distance from the bottom surface of the fixture. When the pressure sensor detects contact resistance (indicating the ejector head is contacting the bottom of the chip), the robotic arm continues to lift, completely detaching the NG chip from the fixture and causing it to fall into the collection structure below for recollection.

[0042] In one possible implementation, the diversion device 6 further includes an NG return conveyor line 63, which is disposed on the table surface of the workbench 1 and parallel to the main conveyor line 2. Its input end is connected to the output end of the NG processing mechanism 61, and its output end extends to the starting loading position of the main conveyor line 2.

[0043] Combined with reference Figs. 1-3 As shown, in this embodiment, the NG return conveyor line 63 is constructed with an aluminum alloy profile frame and is fixed to the workbench 1 surface by equal-height pads, maintaining a parallel distance with the main conveyor line 2 for the recycling and transfer of NG chips.

[0044] In one possible implementation, a dust removal mechanism 7 is provided beside the marking station 11, the dust removal mechanism 7 comprising:

[0045] Negative pressure dust removal assembly 71 includes a dust removal hood installed at the marking station 11 and a negative pressure pipeline connecting to the dust removal hood; and

[0046] The dust collection container 72 is connected to the dust removal hood through a negative pressure pipeline.

[0047] Combined with reference Figs. 1-3 As shown, the dust removal mechanism 7 is located beside the marking station 11 and near the edge of the main conveyor line 2. Its negative pressure dust removal component 71 includes an inverted U-shaped dust hood and a negative pressure pipeline system connected to it. The dust hood is fixed by a lateral cantilever bracket and can move horizontally along a direction parallel to the conveyor line to directly above the positioning fixture 5. The bottom of the hood is equipped with a stepped sealing flange, with a high-temperature resistant elastic sealing strip embedded in the upper flange and a long strip-shaped dust suction port on the lower flange. After laser marking is completed, the dust hood moves horizontally into the station and descends vertically, so that the sealing strip is tightly pressed against the surface of the fixture to form a sealed chamber. The negative pressure pipeline connects the dust hood to the dust collection container 72, which sequentially includes a cyclone separator section, a dust storage chamber, and a high-efficiency filter unit. After the fan is started, a directional airflow is generated, which draws the dust particles generated by marking from the dust suction port. After centrifugal sedimentation by the cyclone separator, metal debris is settled, and residual aerosol is thoroughly purified by the high-efficiency filter before being discharged into the air. After dust removal is completed, the dust hood is raised and reset to the standby position. The entire process is synchronized with the conveyor line rhythm to ensure that the dust is removed in time before it spreads.

[0048] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A marking and sorting device for a mechanical keyboard main control chip, characterized in that, include: The workbench has marking stations and verification stations arranged sequentially along its length. The main conveyor line, set on the workbench surface, is used to convey positioning fixtures along a straight path. The positioning fixtures are used to fix the main control chips. The main conveyor line is configured to intermittently position the positioning fixtures to the marking station and the verification station. The marking station is equipped with a laser marking mechanism for engraving marking information on the surface of each main control chip in the positioning fixture. The verification station is equipped with an information recognition mechanism for reading and verifying the marking content on the surface of each main control chip. and The diversion device includes an NG processing mechanism and a transfer component disposed on the workbench surface. The transfer component is disposed on the side of the main conveyor line and is used to move the positioning fixture that is determined to be NG at the verification station away from the main conveyor line to the NG processing mechanism.

2. The marking and sorting device for mechanical keyboard main control chips according to claim 1, characterized in that, The positioning fixture includes a base and multiple receiving units disposed on the base. Each receiving unit has pin limiting structures on both sides of its bottom for fixing chip pins, and each receiving unit has an ejection clearance hole in the center of its bottom, the axis of which is perpendicular to the bottom surface of the receiving unit.

3. The marking and sorting device for mechanical keyboard main control chips according to claim 2, characterized in that, The NG processing mechanism includes: A flipping component is used to receive and fix the positioning fixture from the transfer component, and drive the positioning fixture to change from a first state with the opening of the receiving unit facing upward to a second state with the opening facing downward. The ejection execution assembly includes a robotic arm and an elastic pressing unit disposed at the end of the robotic arm; When the positioning fixture is in the second state, the robotic arm can be positioned below the ejection clearance hole of the receiving unit, and the elastic pressing unit applies a vertical ejection force to the NG chip through the ejection clearance hole.

4. The marking and sorting device for mechanical keyboard main control chips according to claim 3, characterized in that, The diversion device also includes an NG return conveyor line, which is set on the workbench surface and parallel to the main conveyor line. Its input end is connected to the output end of the NG processing mechanism, and its output end extends to the starting loading position of the main conveyor line.

5. The marking and sorting device for mechanical keyboard main control chips according to claim 1, characterized in that, A dust removal mechanism is provided next to the marking station. The dust removal mechanism includes: The negative pressure dust removal assembly includes a dust removal hood installed at the marking station and a negative pressure pipeline connecting to the dust removal hood; and The dust collection container is connected to the dust removal hood via a negative pressure pipeline.

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