Efficient dust removal process for electronic carrier tape

Abstract

The invention provides an efficient dust removal process for an electronic carrier tape, and relates to the technical field of packaging assistance of electronic components. The efficient dust removal process for the electronic carrier tape comprises the specific steps of carrier tape pretreatment, precise conveying and positioning, multi-stage cooperative dust removal, cleanliness detection and winding and tidying, specifically, (S01), the electronic carrier tape to be subjected to dust removal is preliminarily tidied, obvious large impurities (such as chippings and adhesive foreign matter) are removed, a carrier tape reel is installed on an unwinding device, and the unwinding device is used for unwinding the electronic carrier tape to be subjected to dust removal; the carrier tape is in a tensioned and orderly conveying state, and preparation is made for subsequent accurate conveying and dust removal. Through a multi-stage synergistic dust removal mode of high-pressure airflow pre-blowing, ultrasonic-assisted cleaning and negative-pressure adsorption and recovery, loose dust is preliminarily cleaned, stubborn dust is deeply removed, and then dust is timely recovered, so that the surface of the electronic carrier tape, a containing cavity and the like are cleaned in all directions, the dust residual rate is greatly reduced, the cleanliness of the carrier tape is guaranteed, and the service life of the carrier tape is prolonged. And the high-standard packaging requirements of electronic components are met.

Description

Technical Field

[0001] This invention relates to the field of auxiliary technology for electronic component packaging, specifically to a high-efficiency dust removal process for electronic carrier tapes. Background Technology

[0002] Electronic carrier tapes, as important packaging materials for electronic components, are widely used in the tape packaging process. The cleanliness of their surface and containing cavity directly affects the storage and transportation quality of electronic components, and may even interfere with their performance. Existing dust removal processes for electronic carrier tapes have the following shortcomings: Poor dust removal effect: The dust removal method is simple, relying mainly on simple blowing or brush cleaning, which makes it difficult to achieve comprehensive cleaning of the tiny gaps on the surface of the carrier tape and the inside of the receiving cavity. The dust residue rate is high, which cannot meet the high standard packaging requirements of electronic components for carrier tape cleanliness.

[0003] Unstable conveying: During the dust removal process, the carrier belt is prone to deviation and shaking, resulting in uneven dust removal, affecting the dust removal effect, and reducing the stability and continuity of equipment operation.

[0004] Low efficiency: The dust removal efficiency is low and cannot keep up with the pace of large-scale production of electronic carrier tapes, which increases production and time costs and restricts the efficiency and quality of electronic carrier tape production and downstream electronic component packaging.

[0005] To address this, we have developed a new high-efficiency dust removal process for electronic carrier belts. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a high-efficiency dust removal process for electronic carrier belts, solving the following problems: It achieves comprehensive and efficient dust removal and cleaning of the electronic carrier tape surface and cavity, ensuring the cleanliness of the carrier tape and solving the problems of incomplete dust removal and high dust residue rate in traditional processes.

[0007] Optimize the stability of carrier belt conveying, ensure uniform dust removal, and solve the problem of incomplete local dust removal caused by unstable carrier belt conveying.

[0008] Improving dust removal efficiency meets the needs of large-scale production, solves the problems of low efficiency and poor adaptability of traditional processes, and lays the foundation for high-quality packaging of electronic components.

[0009] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency dust removal process for electronic carrier tapes, comprising specific steps including carrier tape pretreatment, precise conveying and positioning, multi-stage synergistic dust removal, cleanliness detection, and winding and finishing. The synergistic effect of each step achieves high-efficiency dust removal for the electronic carrier tapes, as detailed below: 1. Carrier tape pretreatment (S01) The electronic carrier belt to be dusted undergoes initial sorting to remove large, obvious debris (such as chips, adhering foreign objects, etc.). The carrier belt reel is then installed onto the unwinding device, ensuring the belt is taut and conveyed in an orderly manner, preparing for subsequent precise conveying and dust removal. This step prevents large debris from affecting the normal operation of subsequent conveying and dust removal equipment, ensuring smooth process flow. The initial tension of the unwinding device is set to 3-5N, which can be fine-tuned according to the actual condition of the carrier belt to ensure smooth unwinding.

[0010] 2. Precise delivery and positioning (S02) A conveyor system with positioning guide grooves and a correction mechanism is used to transport the carrier belt. The positioning guide grooves are adapted to the shape of the carrier belt to limit its movement, ensuring stable forward movement along a preset path. The correction mechanism monitors the carrier belt position in real time. When deviation occurs, it corrects the conveyor direction by fine-tuning the angle and position of the conveyor rollers, ensuring the straightness and stability of the carrier belt and providing a foundation for uniform and comprehensive dust removal. The correction mechanism uses sensors (such as photoelectric sensors) in conjunction with a control unit to achieve correction. The sensors detect the edge position of the carrier belt, and the control unit drives the correction actuator based on the detection signal, keeping the straightness error of the carrier belt conveyor within ±0.5mm.

[0011] 3. Multi-stage synergistic dust removal (S03) The process includes sequential high-pressure airflow pre-blowing, ultrasonic-assisted cleaning, and negative pressure adsorption recovery. These steps work together to achieve comprehensive and deep dust removal from the carrier belt. High-pressure airflow pre-blowing: Before the carrier belt enters the main dust removal area, high-pressure airflow is sprayed onto the carrier belt surface and the receiving cavity through a high-pressure airflow nozzle assembly (the airflow pressure is controlled at 0.3-0.5MPa, which can be adjusted according to the carrier belt material and thickness). The impact force of the airflow blows off loosely attached dust and small impurities from the carrier belt surface, initially cleaning most easily removable impurities. Simultaneously, it keeps the dust in the tiny gaps on the carrier belt surface and inside the receiving cavity in a suspended and loose state, facilitating subsequent dust removal processes. The high-pressure airflow nozzle assembly is rationally arranged along the width of the carrier belt and the distribution area of ​​the receiving cavity to ensure comprehensive airflow coverage.

[0012] Ultrasonic-assisted cleaning: An ultrasonic vibration component acts on the carrier belt at a frequency of 20-40kHz, generating high-frequency micro-vibrations on the surface and inside of the carrier belt. This causes stubborn dust adhering to tiny depressions on the carrier belt surface, the side walls of the receiving cavity, and the bottom to detach from the belt. Simultaneously, a flexible brush roller cleans the carrier belt surface and receiving cavity at a rotation speed of 50-100 rpm. The flexible brush can penetrate deep into the receiving cavity to further remove any dust that has been vibrated away or not, achieving deep cleaning. The contact area between the ultrasonic vibration component and the carrier belt uses a suitable elastic contact structure to avoid damaging the carrier belt. Furthermore, the brush roller is made of anti-static and wear-resistant nylon material to reduce electrostatic adsorption and brush wear during cleaning.

[0013] Negative pressure adsorption recovery: After the carrier belt is ultrasonically cleaned, a negative pressure adsorption device is used to adsorb negative pressure on the surface of the carrier belt, the receiving cavity, and the surrounding area (the negative pressure value is controlled between -0.06 and -0.08 MPa). This promptly adsorbs and collects the dust and impurities blown off and swept away, preventing secondary contamination of the carrier belt. The shape and layout of the adsorption port of the negative pressure adsorption device are matched with the shape of the carrier belt and the distribution of the receiving cavity to ensure comprehensive adsorption. The adsorbed dust is transported through a collection pipeline to a dust collection and recovery box for centralized treatment.

[0014] 4. Cleanliness test (S04) After undergoing multi-stage dust removal, the carrier belt undergoes cleanliness testing via an optical inspection system. This system includes a high-resolution industrial camera, a light source, and an image analysis and processing unit. The industrial camera captures images of the carrier belt surface and its housing, while the light source provides uniform and stable illumination to ensure clear imaging. The image analysis and processing unit compares the captured images with preset cleanliness standard images to identify the presence of residual dust and impurities on the carrier belt surface and housing. When cleanliness fails to meet standards, a feedback signal is sent to the control system, which can then select whether to perform secondary dust removal, marking, or rejection of the carrier belt, ensuring that the cleanliness of the carrier belt leaving the factory meets quality requirements.

[0015] 5. Collecting and organizing (S05) Carrier tapes that meet cleanliness standards are wound up by a winding device. This device features tension control, allowing for the setting of appropriate winding tension based on the carrier tape's material and thickness (tension value controlled between 5-15N to prevent deformation from excessive tightness or wrinkles from excessive looseness). This ensures the carrier tape is wound neatly and tightly, facilitating subsequent storage, transportation, and use. During the winding process, the carrier tape can be simultaneously cleaned and protected (e.g., uniformly sprayed with a very thin antistatic and dustproof coating, with a coating thickness controlled between 1-3μm, without affecting the basic performance of the carrier tape), further enhancing its dust resistance.

[0016] Preferably, in step S03, for thinner and softer carrier tapes, the high-pressure airflow pressure is adjusted to 0.3-0.4MPa, the ultrasonic vibration frequency to 20-30kHz, the brush roller speed to 50-80r / min, and the winding tension to 5-12N to avoid damaging the carrier tape.

[0017] Preferably, in step S03, for carrier belts with deep cavities and complex structures, the number of nozzles and airflow intensity in the high-pressure airflow nozzle group corresponding to the cavity area are increased, and the action time or frequency of the ultrasonic vibration component is adjusted to 30-40kHz to ensure the dust removal effect inside the cavity.

[0018] (III) Beneficial Effects This invention provides a high-efficiency dust removal process for electronic carrier tapes. It has the following beneficial effects: 1. This high-efficiency dust removal process for electronic carrier tapes utilizes a multi-stage synergistic dust removal method, including high-pressure airflow pre-blowing, ultrasonic-assisted cleaning, and negative pressure adsorption recovery. From initial cleaning of loose dust to deep removal of stubborn dust, and finally to timely dust recovery, it achieves comprehensive cleaning of the electronic carrier tape surface and its housing cavity, significantly reducing dust residue and ensuring carrier tape cleanliness to meet the high-standard packaging requirements of electronic components. For example, tests have shown that compared to traditional single dust removal processes, this process can increase the dust removal rate on the carrier tape surface to over 98% and the dust removal rate inside the housing cavity to over 95%.

[0019] 2. This efficient dust removal process for electronic carrier belts, through the precise conveying and positioning step, uses a positioning guide groove and a correction mechanism to effectively avoid deviation and shaking during the conveying process of the carrier belt, so that all parts of the carrier belt can be uniformly treated for dust removal, ensuring the consistency of dust removal effect, and solving the problem of incomplete local dust removal caused by unstable carrier belt conveying.

[0020] 3. This high-efficiency dust removal process for electronic carrier tapes forms a continuous and efficient dust removal process through the coordinated operation of each step. Pre-treatment and precise conveying ensure smooth subsequent processes, multi-stage dust removal provides efficient cleaning, and cleanliness detection and winding and finishing ensure quality and finished product status. The overall process can be adapted to the pace of large-scale production of electronic carrier tapes. Compared with traditional processes, the dust removal efficiency can be improved by 30%-50%, reducing the production cost per unit time and improving production efficiency.

[0021] 4. This efficient dust removal process for electronic carrier tapes employs appropriate parameters and flexible, elastic contact structures (such as the elastic contact of ultrasonic vibration components and flexible brush rollers) in each process to achieve efficient dust removal while avoiding damage or deformation to the carrier tape, ensuring the original physical properties and dimensional accuracy of the carrier tape, and ensuring that its function of carrying and packaging electronic components is not affected. Attached Figure Description

[0022] Figure 1 This is a flow chart of an efficient dust removal process for electronic carrier tape according to the present invention. Detailed Implementation

[0023] 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.

[0024] Example 1 (Conventional Electronic Carrier Belt Dust Removal) like Figure 1 As shown, this embodiment of the invention provides a high-efficiency dust removal process for electronic carrier tapes, including the following steps: Carrier tape pretreatment (S01): Manually remove large debris from the surface of the electronic carrier tape, install the carrier tape reel onto the unwinding device, set the initial unwinding tension to 4N, and make the carrier tape taut and orderly.

[0025] Precise conveying and positioning (S02): Start the conveying device with positioning guide groove and correction mechanism. The positioning guide groove limits the carrier belt. The correction mechanism detects the edge of the carrier belt through photoelectric sensor. The control unit drives the actuator to ensure that the straightness error of the carrier belt conveying is within ±0.5mm.

[0026] Multi-stage synergistic dust removal (S03): High-pressure airflow pre-blowing: Adjust the high-pressure airflow pressure to 0.4MPa, and arrange the nozzle group reasonably along the carrier belt to spray airflow to initially remove dust from the carrier belt surface and the receiving cavity.

[0027] Ultrasonic assisted cleaning: The ultrasonic vibration frequency is set to 30kHz, the brush roller speed is 80r / min, and the nylon brush works in conjunction with the ultrasonic vibration to deeply clean the carrier belt.

[0028] Negative pressure adsorption and recovery: Adjust the negative pressure value to -0.07MPa, and adapt the adsorption port to the carrier belt to recover dust in a timely manner.

[0029] Cleanliness inspection (S04): The optical inspection system takes pictures of the carrier belt after dust removal and compares them with the preset standard to identify residual impurities. If the standard is met, the belt can be wound up; otherwise, secondary dust removal or marking and rejection will be triggered.

[0030] Rewinding and finishing (S05): The rewinding device is set to a tension of 10N to rewind the carrier tape neatly, and a 1.5μm thick antistatic and dustproof coating is sprayed simultaneously to complete the rewinding.

[0031] Example 2 (Adjustment for Dust Removal of Thin Electronic Carrier Belt) like Figure 1As shown, this embodiment of the invention provides a high-efficiency dust removal process for electronic carrier tapes, specifically for thinner, softer electronic carrier tapes, including the following steps: Carrier tape pretreatment (S01): Same as in Example 1, the initial unwinding tension is adjusted to 3.5N.

[0032] Precise delivery and positioning (S02): Same as in Example 1, ensuring stable delivery of the carrier belt.

[0033] Multi-stage synergistic dust removal (S03): High-pressure airflow pre-blowing: The pressure is adjusted to 0.35MPa to avoid damaging the thin carrier tape.

[0034] Ultrasonic assisted cleaning: The vibration frequency is adjusted to 25kHz and the brush roller speed is 60r / min to reduce the force on the thin carrier belt.

[0035] Negative pressure adsorption and recovery: Same as in Example 1, ensuring dust recovery.

[0036] Cleanliness test (S04): Same as in Example 1, ensuring the accuracy of cleanliness test.

[0037] Winding and finishing (S05): Adjust the winding tension to 8N to avoid deformation of the thin carrier tape during winding, and the coating thickness is 1μm to complete the winding.

[0038] Example 3 (Adaptation and Adjustment of Dust Removal for Deep-Cavity Electronic Carrier Belt) like Figure 1 As shown, this embodiment of the invention provides a high-efficiency dust removal process for electronic carrier tapes, specifically for electronic carrier tapes with deep cavities and complex structures, including the following steps: Carrier tape pretreatment (S01): Same as in Example 1, initial unwinding tension 4.5N (the tension is appropriately increased due to the complex structure of the carrier tape).

[0039] Precise delivery and positioning (S02): Same as in Example 1, ensuring stable delivery of the carrier belt.

[0040] Multi-stage synergistic dust removal (S03): High-pressure airflow pre-blowing: Increase the number of nozzles in the corresponding containment cavity area, maintain the pressure at 0.45MPa, and enhance dust removal in the containment cavity.

[0041] Ultrasonic assisted cleaning: The vibration frequency is adjusted to 35kHz to extend the action time and improve the dust removal effect inside the cavity.

[0042] Negative pressure adsorption and recovery: Same as in Example 1, ensuring dust recovery.

[0043] Cleanliness test (S04): Same as in Example 1, ensuring the accuracy of cleanliness test.

[0044] Rewinding and finishing (S05): Rewinding tension 12N, suitable for deep cavity carrier tape rewinding requirements, coating thickness 2μm, complete rewinding.

[0045] It should be noted that the specific structure and parameters of the equipment in each step of this invention can be flexibly adjusted according to the specifications and characteristics of the electronic carrier tape being produced, so as to achieve the best dust removal effect and production efficiency.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency dust removal process for electronic carrier tapes, characterized in that: The specific steps include the following: S01. Carrier belt pretreatment: The electronic carrier belt to be dusted is preliminarily sorted to remove obvious large debris, and the carrier belt reel is installed on the unwinding device to make the carrier belt in a taut and orderly conveying state. S02. Precise conveying and positioning: The carrier belt is conveyed using a conveyor device with positioning guide grooves and a correction mechanism. The positioning guide grooves limit the position of the carrier belt, and the correction mechanism monitors the position of the carrier belt in real time and corrects it when deviation occurs. S03. Multi-stage synergistic dust removal: including high-pressure airflow pre-blowing, ultrasonic-assisted cleaning and negative pressure adsorption recovery in sequence. High-pressure airflow pre-blowing sprays high-pressure airflow onto the carrier belt surface and the receiving cavity. Ultrasonic-assisted cleaning uses ultrasonic vibration in conjunction with a flexible brush roller to clean. Negative pressure adsorption recovery performs negative pressure adsorption on the carrier belt and surrounding areas. S04. Cleanliness Detection: The cleanliness of the carrier belt after multi-stage dust removal is detected by an optical detection system. The captured images are compared with preset standards to identify residual dust and impurities. S05. Winding and finishing: The carrier tape that meets the cleanliness standard is wound up by a winding device with tension control function. Surface cleaning and protection treatment can be carried out simultaneously during the winding process.

2. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S03, the pressure of the high-pressure airflow pre-blowing is controlled at 0.3-0.5MPa, and the high-pressure airflow nozzle group is reasonably arranged along the width direction of the carrier belt and the distribution area of ​​the receiving cavity.

3. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S03, the ultrasonic vibration frequency of the ultrasonic-assisted cleaning is set to 20-40kHz, the rotation speed of the flexible brush roller is 50-100r / min, and the brush material is made of antistatic and wear-resistant nylon.

4. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S03, the negative pressure value of the negative pressure adsorption recovery is controlled between -0.06 and -0.08 MPa, and the shape and layout of the adsorption port of the negative pressure adsorption device are matched with the shape of the carrier belt and the distribution of the accommodating cavity.

5. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S02, the correction mechanism achieves correction through the cooperation of the sensor and the control unit. The sensor detects the position of the carrier belt edge, and the control unit drives the correction actuator to operate according to the detection signal, so that the straightness error of the carrier belt conveyor is controlled within ±0.5mm.

6. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S04, the optical inspection system includes a high-resolution industrial camera, a light source, and an image analysis and processing unit. When the cleanliness is found to be substandard, a feedback signal is sent to the control system to select whether to perform secondary dust removal, marking, or rejection of the carrier belt.

7. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S05, the winding tension of the winding device is controlled at 5-15N, and the surface cleaning and protection treatment is to uniformly spray an extremely thin antistatic and dustproof coating with a coating thickness controlled at 1-3μm.

8. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: In step S01, the initial tension of the unwinding device is set to 3-5N, and fine-tuned according to the actual situation of the carrier tape.

9. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: For thinner, softer carrier tapes, adjust the high-pressure airflow pressure to 0.3-0.4MPa, the ultrasonic vibration frequency to 20-30kHz, the brush roller speed to 50-80r / min, and the winding tension to 5-12N.

10. The high-efficiency dust removal process for electronic carrier tape according to claim 1, characterized in that: For carrier tapes with deep cavities and complex structures, increase the number of nozzles and airflow intensity in the high-pressure airflow nozzle group corresponding to the cavity area, and adjust the action time or frequency of the ultrasonic vibration component to 30-40kHz.

Images