False eyelash processing technology capable of inserting hairs at multiple angles

Abstract

The invention discloses a false eyelash processing technology capable of inserting hairs at multiple angles, and relates to the technical field of beauty makeup, and the false eyelash processing technology specifically comprises the following steps: S1, screening and pretreating eyelashes; s2, setting false eyelash pattern parameters; s3, foam carrier pretreatment; s4, debugging the hair planting machine and performing pre-hair planting test; s41, flocking at the same angle; s42, performing multi-angle hair planting; s5, combining eyelash wires and pulling a high-temperature adhesive tape; s6, demolding; s7, stem cleaning; and S8, detecting the quality of finished false eyelashes. The hole position angle and length gradient are optimized through CAD design and 3D simulation, multi-angle partition hair planting is achieved through numerical control drilling and a multi-axis hair planting machine, eyelash multi-dimensional screening, laser positioning calibration and pre-planting three tests are matched, the planting angle, height and density are accurately controlled, eyelashes are prevented from overlapping and lodging, the limitation that a traditional product is single in form is broken through, and the production efficiency is improved. A natural dense three-dimensional effect is presented, the product consistency is improved, manual intervention is reduced, and the defective rate and raw material waste are reduced.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and in particular to a process for processing false eyelashes that can be inserted from multiple angles. Background Technology

[0002] Long, curved, dark, and vibrant eyelashes play a crucial role in the beauty of the eyes and even the overall appearance. Eyelashes are arranged in a semi-circular shape, enhancing the contours of the eyes and adding to their expressiveness. False eyelashes are a type of eye cosmetic, typically used to increase the density or length of natural eyelashes for a decorative effect.

[0003] Traditional false eyelash production (especially handmade simulated eyelashes) has long relied on intensive labor. The process involves manually or semi-automatically inserting fibers (such as synthetic fibers) one by one or in clusters onto a substrate (such as cotton thread or transparent band) coated with glue. Due to the reliance on manual operation and the limitations of the process, the false eyelashes after insertion have a monotonous appearance. Manual operation also leads to uneven quality of the false eyelashes after insertion, resulting in a serious waste of fibers. Summary of the Invention

[0004] The purpose of this invention is to provide a process for processing false eyelashes that allows for insertion of hairs at multiple angles, in order to solve at least one of the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a processing technology for false eyelashes that can be inserted at multiple angles, the specific processing technology being as follows: S1: Eyelash screening and pretreatment; S2: False eyelash flower design parameter settings; S3: Foam carrier pretreatment; S4: Debugging of the tufting machine and pre-tufting test; S41: Hair transplantation at the same angle; S42: Multi-angle hair transplantation; S5: Eyelash thread bonding and high-temperature adhesive strip; S6: Demolding; S7: Clear the stems; S8: Quality inspection of finished false eyelashes.

[0006] Preferably, in step S1, each eyelash strand selected must be of the same length, and multiple tests must be performed after selection.

[0007] Preferably, in step S3, the foam carrier is a low-density, high-elasticity foam material.

[0008] Preferably, in step S4, during the pre-test, whether hair is planted at the same angle or at multiple angles, three tests should be conducted and the pre-test results should be checked for any deviations.

[0009] Preferably, in step S5, the eyelash bonding machine is used for bonding the eyelashes, and the bonding position is located on the eyelash strands outside the foam carrier. The high-temperature adhesive strip is pulled using an eyelash high-temperature adhesive strip machine, and the high-temperature adhesive strip is pulled above the bonding thread shaft.

[0010] Preferably, in step S7, the eyelash stem cleaning is performed using an automatic eyelash stem cleaning machine.

[0011] Preferably, in step S8, the quality inspection of the finished false eyelashes includes: firmness test and weather resistance pre-test.

[0012] The beneficial effects of this invention are as follows: 1. In this invention, core parameters such as hole position angle pattern and length gradient are clearly defined through CAD design. 3D simulation optimization is used to avoid eyelash overlap and drooping. Relying on CNC drilling module and multi-axis hair implantation machine, hair can be inserted in the same or multiple angle zones. The eyelash strands are distributed in an alternating manner according to preset angles and length gradients, restoring the natural eyelash growth state. This breaks the limitation of the single form of traditional products and presents a more natural and dense three-dimensional effect.

[0013] 2. In this invention, the application combines automated equipment with precise detection. A laser positioning instrument calibrates the carrier position, a servo motor controls the repeated positioning accuracy of the hair implantation head, three pre-implantation tests are conducted to check for deviations, and eyelashes are screened in multiple dimensions to ensure uniformity. Hole position parameters are re-checked and visual monitoring identifies abnormalities in real time, which greatly improves the consistency of implantation angle, height, and density, reduces manual intervention, eliminates the need to rely on highly skilled workers for hair insertion, improves processing efficiency, reduces defect rate, reduces material waste, significantly improves product yield, and enhances production economy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the false eyelashes with hair implanted at the same angle according to the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the multi-angle hair-planted false eyelashes of the present invention. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] This invention provides, for example Figure 1-2 The process shown is a multi-angle insertion technique for false eyelashes. The specific process is as follows: S1: Eyelash screening and pretreatment; S2: False eyelash flower design parameter settings; S3: Foam carrier pretreatment; S4: Debugging of the tufting machine and pre-tufting test; S41: Hair transplantation at the same angle; S42: Multi-angle hair transplantation; S5: Eyelash thread bonding and high-temperature adhesive strip; S6: Demolding; S7: Clear the stems; S8: Quality inspection of finished false eyelashes.

[0017] In step S1, each eyelash strand selected must be of the same length, and multiple tests must be performed after selection.

[0018] In step S3, the foam carrier is made of low-density, high-elasticity foam material.

[0019] In step S4, during the pre-test, whether hair is planted at the same angle or at multiple angles, three tests must be conducted and the pre-test results must be checked for any deviations.

[0020] In step S5, the eyelash bonding machine is used for bonding the eyelashes, and the bonding position is located on the eyelash strands outside the foam carrier. The high-temperature adhesive strip is pulled using an eyelash high-temperature adhesive strip machine, and the high-temperature adhesive strip is pulled above the bonding thread shaft.

[0021] In step S7, the eyelash stem cleaning is performed using an automatic eyelash stem cleaning machine.

[0022] In step S8, the quality inspection of the finished false eyelashes includes: appearance inspection, durability inspection and weather resistance pre-test.

[0023] Further S1: Select the prepared eyelash strands to find those that meet the standards; Material selection: Select eyelashes made of different materials according to product positioning, such as PET, PBT, nylon fiber or other synthetic fiber materials.

[0024] Size screening: Using a fully automatic laser diameter measuring instrument and length sorting machine, eyelashes with equal diameter and length deviation of ≤0.001mm and ≤0.05mm are screened to ensure the uniformity of each batch of eyelashes.

[0025] Appearance screening: The surface quality of the eyelashes is inspected using a visual inspection device, and defective products with burrs, bends, color differences, or stains are rejected. Performance screening: The initially qualified eyelashes are subjected to elasticity rebound test (the rebound rate must be ≥95% after bending and holding pressure for 10 seconds) and bending resistance test (no breakage after 1000 bends) to avoid problems such as drooping or broken hairs after hair transplantation.

[0026] Diameter uniformity test: Randomly select 5% of the screened eyelashes and test the diameter at three points: the beginning, end, and middle of the eyelash. This ensures that the diameter deviation of the selected eyelashes is within a reasonable range.

[0027] Flexibility consistency test: Randomly select 5% of the screened eyelashes and use a flexibility tester to measure the bending modulus of the eyelashes. The bending modulus deviation of a single batch must be ≤3% to ensure the consistent curl of the eyelashes after hair transplantation.

[0028] Test pass / fail criteria: The pass rate for the above two tests must be ≥99.8%. All batches that fail the tests must be reworked and rescreened. For batches that pass the tests, an eyelash test report will be generated and archived for future reference.

[0029] Anti-static treatment: Place qualified eyelashes into an ion air box for 5 minutes to eliminate surface static electricity and prevent sticking during loading.

[0030] S2: Pattern Design: Use CAD software to design the pattern of the false eyelashes, clarify the core parameters, overall curvature, single cluster eyelash length gradient (short section length at both ends 3-5mm, long section length in the middle 8-12mm), cluster distribution density (10-15 clusters / cm), hole arrangement coordinates, and hole angle mode (same angle / multiple angles).

[0031] Import CAD design parameters into 3D modeling software to generate a three-dimensional model of the post-implantation morphology of false eyelashes, simulating the growth and distribution of natural eyelashes; through simulation analysis, adjust parameters such as hole spacing and angle combination to avoid problems such as overlapping or drooping of eyelashes, and generate the optimal design scheme.

[0032] The optimized parameters are broken down into three types of control commands: tufting machine commands (tufting depth, tufting speed, gripper pressure), hole-opening module commands (hole diameter, hole depth, drilling angle), and rotary clamping seat commands (rotation speed, angle positioning accuracy, zone start / stop position). These commands are synchronously input to the corresponding control systems. A parameter linkage reference table is generated to ensure the consistency between design parameters and processing parameters, forming a closed loop of design-processing-inspection.

[0033] S3: Use low-density, high-elasticity PU foam material to ensure that the eyelashes are firmly fixed after insertion and are not easily broken during demolding; test the compression rebound rate of the foam carrier, which must be ≥90%.

[0034] Double-clean the foam carrier by wiping it with a cleaning cloth and medical alcohol, and let it air dry to ensure the cleanliness of the foam carrier surface.

[0035] According to the length specifications of the false eyelashes, cut the foam carrier into strips of the corresponding size (the length of the foam carrier should be longer than the length specifications of the false eyelashes). After cutting, remove the burrs from the edges of the carrier to avoid scratching the eyelash strands.

[0036] Place the prepared foam carrier into the rotating clamping seat of the implantation machine, clamp the foam carrier firmly, and do not use too much clamping force to ensure that the carrier is not deformed or displaced; calibrate the position of the carrier with a laser positioning instrument so that the central axis of the carrier coincides with the central axis of rotation of the clamp.

[0037] Start the CNC drilling module that comes with the tufting machine and process the holes according to the preset hole pattern: Holes at the same angle: The hole-drilling module drills holes in batches at a fixed angle, with uniform hole depth and hole spacing evenly distributed according to the pattern design.

[0038] Multi-angle hole positions: The hole opening module is divided into preset angle zones (e.g., 45° for the inner corner of the eye, 85° for the middle of the eye, and 60° for the outer corner of the eye), and the drilling angle is adjusted group by group; the hole depth is adjusted according to the length gradient requirements (1.2mm for the short zone and 0.8mm for the long zone).

[0039] After drilling, debris inside the hole is cleaned with a high-pressure air gun; 20% of the holes are randomly selected and the hole diameter and depth are checked to ensure that the hole parameters meet the requirements for hair implantation; unqualified holes are marked and re-drilled.

[0040] S4: Start the multi-axis hair implantation machine and perform a self-test according to the existing equipment standard operating procedure to confirm that the core components such as the hair implantation head, rotating clamping seat, and feeding module are free from jamming and abnormal noise; retrieve the built-in hair implantation process parameter database of the equipment, and match the corresponding basic parameter thresholds according to the size (diameter and length) of the eyelashes and the pore position parameters of the foam carrier in this batch, without the need to develop a new parameter system. Adjust the negative pressure of the vacuum adsorption claw of the hair grafting head to the normal working range of the existing equipment, take a sample of eyelashes for gripping test, and ensure that the claw can stably grip a single eyelash without deforming or damaging the hair due to excessive pressure; the test standard is 100 consecutive grips and the success rate must meet the standard. Based on the existing servo motor drive system of the tufting machine, the vertical downward stroke of the tufting head is calibrated to control the stroke error within the inherent accuracy range of the equipment; the repeatability accuracy of the tufting head at the "highest point - insertion point - reset point" is tested by manual jogging mode to ensure no deviation in multiple actions; Test the linkage between the tufting head and the rotating clamping seat. Start the equipment simulation operation program, set the matching parameters between the rotation speed of the clamping seat and the tufting frequency of the tufting head, and ensure that the tufting head can respond quickly after the clamping seat rotates into place, which meets the linkage control standards of existing equipment. The pre-treated eyelash strands are placed into the existing feeding trough of the hair implantation machine; the hair implantation machine uses the existing vacuum adsorption feeding device to pick up the eyelash strands in the trough one by one and put them into the hair implantation head gripper.

[0041] Before the formal tufting process, a small-scale pre-tufting test is conducted to verify the equipment's debugging accuracy, parameter compatibility, and material matching, identifying potential problems in advance and avoiding batch defects. The specific process is as follows: Sample preparation: Select foam carriers and pre-treated eyelashes that are consistent with the formal production specifications, fix them on the rotating clamping seat according to the formal clamping standard, and complete the hole processing and cleaning of the corresponding area.

[0042] Test parameter settings: Use the tufting parameters that have been debugged (gripper pressure, tufting depth, rotation speed, angle parameters, etc.), select the pre-tufting mode in the tufting machine control system (the pre-tufting mode can be set separately and is specifically used for pre-tufting test), and limit the tufting range to 2-3 zones of the sample (covering long and short gradient areas at the same time; multi-angle mode needs to cover more than 2 angles).

[0043] Pre-implantation procedure: Start the equipment to complete a small-scale pre-implantation. During the implantation process, the existing visual monitoring component is activated simultaneously to record the entire action of the implantation head grasping, inserting, and releasing the hair. The focus is on observing the stability of the eyelash insertion and the accuracy of the hole alignment.

[0044] Test result verification: Check the positional deviation of the pre-implanted eyelashes, the gradient deviation of the exposed length, and the consistency of the angle to confirm the parameter matching degree.

[0045] A 0.3N tension was applied to the pre-implanted eyelashes using a miniature tension gauge. The test showed no loosening or falling off. The pores of the foam carrier were observed to be undamaged and undeformed.

[0046] Visual inspection with a magnifying glass revealed no bent or flattened eyelashes, no missed or excessive eyelashes, and no scratches on the eyelashes at the implantation head.

[0047] If all indicators meet the standards, the pre-implantation is deemed qualified and the formal tufting process can begin. If there are deviations (such as inaccurate length gradient or angle offset), only the corresponding parameters are slightly adjusted (without changing the core debugging data), and the pre-implantation test is repeated until the standards are met. If problems such as batch gripping failure or hole damage occur, the equipment debugging process is traced back to check the core factors such as gripper pressure and carrier clamping accuracy. After the problems are resolved, the pre-implantation is repeated. Each pre-implantation test requires three tests and checks for deviations in the pre-test results. If there are no problems, formal processing can begin.

[0048] S41: Processing with the same angle of hair implantation: The control system of the implantation machine retrieves the recorded hole position coordinate parameters and drives the rotating clamp to rotate at a constant speed, so as to send the holes on the foam carrier to the bottom of the implantation head in sequence. The existing laser alignment sensor of the hair implantation machine detects the position of the hole in real time to ensure that the alignment deviation between the hole and the hair implantation head is within the standard range. After the detection is passed, the hair insertion command is sent. Based on the length gradient parameters, the tufting head adjusts its downward depth using the existing servo stroke control function: when processing the short areas at both ends of the false eyelashes, the downward distance of the tufting head increases, the lash strands are inserted deeper into the foam carrier, and the exposed strands are shorter; when processing the long areas in the middle, the downward distance of the tufting head decreases, the insertion depth is shallowest, and the exposed strands are longer. After the eyelashes are inserted, the eyelash grafts close the vacuum suction and rely on the elasticity of the foam carrier to clamp the eyelashes. Then the eyelash grafts return to their original position, and the clamping seat rotates to the next hole. This process is repeated to complete the eyelash grafting for all holes. During the tufting process, the equipment's existing visual monitoring components capture images in real time to identify abnormalities such as missed tufting or tuft skew. If a problem is detected, the machine will stop immediately and an alarm will sound. The tufting efficiency of this mode meets the standard of existing multi-axis tufting machines. S42: Multi-angle tufting processing: The hair implantation machine control system retrieves the generated "hole position angle - coordinate - depth" processing program, drives the rotating clamp to rotate to the first angle zone (such as the inner corner of the eye 45° zone; the hole position angle in this application is not limited to the angle combination mentioned, such as: in a cluster of eyelashes, the hair implantation angle is different in different areas, and the angle of inserting the foam carrier is different. After hair implantation, the eyelashes are distributed like an interlaced pattern, which is more realistic. Thus, when opening holes in the foam carrier, holes with different angles are opened accordingly, and the hair implantation processing program also needs to be adjusted accordingly so that the rotating clamp of the hair implantation machine can rotate to the corresponding angle in time to complete the hair implantation operation), and locks the position. Based on the existing multi-axis angle adjustment module of the tufting machine, the angle of the tufting head is adjusted to match the angle of the hole position in the partition, and the laser alignment sensor is used to recalibrate the angle deviation between the hole position and the tufting head. The insertion depth of the tufting head is adjusted according to the length gradient requirements to complete the tufting operation of all holes in this section; The hair implantation machine drives the rotating clamp to rotate to the next angle zone, and the hair implantation head is simultaneously adjusted to the corresponding angle. The alignment-insertion action is repeated until the hair implantation of all angle zones is completed (the hair implantation in this application is the insertion of hair in the false eyelash processing process).

[0049] S5: Transfer the foam carrier after hair grafting to the sizing station. Place the foam carrier on the conveyor belt of the sizing machine. The sizing thread can be made of fish silk, nylon thread, cotton thread, etc. The sizing position is above the eyelash filaments on the foam carrier. Ensure that the eyelash filaments of each cluster of eyelashes are attached to the thread and avoid the eyelash filaments from becoming loose. Place the sewn false eyelashes on the processing table of the high-temperature adhesive strip machine. The high-temperature adhesive strip machine will then attach the high-temperature adhesive strip to the false eyelashes (the high-temperature adhesive strip is attached above the sewn thread). Both the thread and the high-temperature adhesive strip must be longer than the length of the false eyelashes.

[0050] After joining the thread and the high-temperature adhesive strip, check whether the adhesive strip is evenly bonded and whether there is any excess or insufficient adhesive; check whether the joined thread is loose or skipped; check whether the eyelash strands are bent or flattened, and ensure that there are no obvious defects in appearance.

[0051] S6: Gently pull the glued eyelash strands out of the carrier to obtain the false eyelash blank with the thread band; during the demolding process, avoid using too much force to prevent the eyelash strands from breaking or falling over.

[0052] S7: Transfer the false eyelash blank to the automatic stem removal machine. Place the false eyelash blank on the conveyor belt of the stem removal machine. The conveyor belt moves the false eyelash blank to below the laser emitter, removing excess eyelash strands and stems to obtain the finished false eyelashes.

[0053] S8: Conduct sampling inspections on finished false eyelashes, randomly selecting 3% of the finished false eyelashes for testing: Firmness test: thread firmness (apply slight tension to a single cluster of eyelashes; no loosening or breakage at the thread joint indicates it is acceptable).

[0054] Weather resistance pre-test: Randomly selected samples were subjected to high and low temperature cycle test (low temperature for 2 hours, room temperature for 1 hour, high temperature for 2 hours, cycled 3 times). The thread and adhesive strip were considered qualified if they did not soften or fall off, and the eyelashes were not deformed.

[0055] Only products that pass all of the above tests can proceed to the next stage; unqualified products must be reworked.

[0056] In this application, the method of transplanting hair at the same angle can obtain a basic style of false eyelashes, with the eyelash strands arranged and distributed together. After the curl of the eyelash strands is set, it becomes a common style of false eyelashes. However, the false eyelashes after transplanting hair at multiple angles have the eyelash strands distributed in an interlaced manner. After the curl of the eyelash strands is set, the eyelash strands will also interlac, forming a more natural and dense effect.

[0057] The processing equipment used in this application is all prior art. The control programs and operating methods designed in the equipment are well known to those skilled in the art, and will not be described in detail here.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing technology for false eyelashes that can be inserted at multiple angles, the specific processing technology being as follows: S1: Eyelash screening and pretreatment; S2: False eyelash flower design parameter settings; S3: Foam carrier pretreatment; S4: Debugging of the tufting machine and pre-tufting test; S41: Hair transplantation at the same angle; S42: Multi-angle hair transplantation; S5: Eyelash thread bonding and high-temperature adhesive strip; S6: Demolding; S7: Clear the stems; S8: Quality inspection of finished false eyelashes.

2. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S1, each eyelash strand selected must be of the same length, and multiple tests must be performed after selection.

3. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S3, the foam carrier is made of low-density, high-elasticity foam material.

4. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S4, during the pre-test, whether hair is planted at the same angle or at multiple angles, three tests must be conducted and the pre-test results must be checked for any deviations.

5. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S5, the eyelash bonding machine is used for bonding the eyelashes, and the bonding position is located on the eyelash strands outside the foam carrier. The high-temperature adhesive strip is pulled using an eyelash high-temperature adhesive strip machine, and the high-temperature adhesive strip is pulled above the bonding thread shaft.

6. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S7, the eyelash stem cleaning is performed using an automatic eyelash stem cleaning machine.

7. The processing technology for multi-angle insertable false eyelashes according to claim 1, characterized in that: In step S8, the quality inspection of the finished false eyelashes includes: firmness test and weather resistance pre-test.

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