CN114156718B - Portable laser wire stripping device and wire stripping method thereof - Google Patents
Portable laser wire stripping device and wire stripping method thereof Download PDFInfo
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- CN114156718B CN114156718B CN202111239733.7A CN202111239733A CN114156718B CN 114156718 B CN114156718 B CN 114156718B CN 202111239733 A CN202111239733 A CN 202111239733A CN 114156718 B CN114156718 B CN 114156718B
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- laser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The invention discloses a portable laser wire stripping device and a wire stripping method thereof, wherein the portable laser wire stripping device comprises a laser source, a first conical lens, a second conical lens, a plane lens and a concave reflecting mirror which are coaxially arranged from front to back in sequence, wherein conical tops of the first conical lens and the second conical lens are symmetrically arranged to form an annular laser beam behind the second conical lens, an opaque stop block is arranged at the center of the rear end face of the plane lens, a limit groove is formed at the rear end of the opaque stop block and used for positioning the front end of a wire to be processed, a concave curved surface of the concave reflecting mirror is arranged opposite to the plane lens and used for focusing the annular laser beam penetrating through the plane lens, and a through hole is coaxially arranged at the center of the concave reflecting mirror and used for allowing the wire to be processed to pass through. The invention has simple structure and the use method, and is suitable for the application fields needing portable or handheld laser wire stripping, such as the fields where the traditional desk-top or desktop laser wire stripping equipment cannot be used, such as industrial automation on-site wiring, aerospace equipment on-site wiring and the like.
Description
Technical Field
The invention relates to wire processing, in particular to a portable laser wire stripping device and a wire stripping method thereof.
Background
Since the discovery and application of electricity, various wires have appeared in large numbers, and the main characteristics of the wires are that the wires consist of an inner metal conductive wire core and an outer insulating layer. With the vigorous development of various consumer electronic products and high-speed communication products, more communication cables have increasingly been thinner and thinner in diameter. The traditional mechanical mode for removing the wire insulation layer can not meet the requirements of no damage to the wire core, regular cut, good consistency and the like. Various methods for stripping the insulating layer and the shielding layer of the wire by laser have appeared in the past ten years. The split-type double-end wire stripper as described in patent CN200820192662, in which the method is proposed to focus the upper and lower laser beams on the wire insulation layer and move the wire to make the laser beam form a cauterization notch on the wire insulation layer, and then manually or mechanically pull the wire insulation layer with the notch to separate the wire core from the insulation layer. Such a method of cutting an insulating layer with only two laser focused beams has the following main drawbacks: in order to meet the requirement of high peak power at the focus, the small diameter of the focus and the short depth of focus directly lead to the fact that the edge of the round wire insulation layer is in an out-of-focus working state and is easy to cut or remain in plastics. The wire core is damaged by excessive cutting at the position close to the focus. In order to solve this problem, a method of cutting an insulating layer using four or more laser beams as described in patent CN201010500061 has been proposed, and the problems existing in the conventional two laser beams are greatly improved by this method. However, this method also presents a new problem because the laser needs to be split into 4 beams for output, and the optical design is excessively complex in either the switched beam or split beam scheme, and the more serious problem is that the best effect is only achieved when the four laser beams are fully coincident. The equipment requires extremely high mechanical stability and adjustment accuracy and is quite difficult to manufacture and use. In order to further expand the coverage area of laser wire stripping applications, a method of rotating a laser beam relative to a wire such as the CN201310279521 laser beam has been developed, but the method generally has a problem that the cut is difficult to align. Along with the increasing degree of electronization of various cables in the fields of aerospace, aviation, military industry, automobiles and the like, the construction wire stripping treatment is needed on site, and the traditional various laser wire stripping machines are large in volume, heavy in weight, complex in adjustment and the like according to the batch application design of production lines, so that the requirements of handheld field operation in a narrow space cannot be met.
Therefore, there is a need to develop a portable laser wire stripping device and a wire stripping method thereof, which have simple structure, convenient use and good incision consistency.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide the portable laser wire stripping device and the wire stripping method thereof, which have the advantages of simple structure, convenient use and good incision consistency.
The technical scheme of the invention is as follows: the utility model provides a portable laser wire stripping device, its characterized in that, includes from front to back coaxial laser source, first conical lens, second conical lens, plane lens, concave mirror that set gradually, first conical lens sets up relatively with second conical lens cone top and is used for forming annular laser beam behind the second conical lens, terminal surface center department is equipped with the opaque dog behind the plane lens, the spacing groove is seted up to the opaque dog rear end and is used for waiting to process wire top location, concave curved surface and the plane lens of concave mirror set up relatively and are used for focusing the annular laser beam that will see through plane lens, concave mirror center department coaxial setting through-hole supplies waiting to process the wire to pass.
Preferably, the limiting groove is a conical groove which is coaxially arranged with the plane lens and has an inner diameter which is uniformly enlarged backwards.
Preferably, the first and second conical lenses have the same cone angle.
Preferably, the light-tight stop block is a cylinder or a cube, and the light-tight stop block is fixedly connected to the center of the rear end face of the planar lens in a fitting way.
Further, the light-tight stop block is arranged coaxially with the plane lens when being a cylinder.
Further, when the light-tight stop block is a cube, one side of the light-tight stop block is axially arranged along the plane lens, and the central axis of the plane lens passes through the geometric center of the light-tight stop block.
The invention also provides a laser wire stripping method, which is characterized by comprising the following steps:
a. the laser source emits collimated or nearly collimated laser beams, the laser beams form annular laser beams after passing through a first conical lens and a second conical lens which are oppositely arranged on the conical top, and the annular laser beams pass through a plane lens and are focused by a concave reflector to obtain an aperture;
b. adjusting the distance between the first conical lens and the second conical lens to enable the laser ring to radially correspond to the insulating sheath of the wire to be processed; the distance between the plane lens and the concave reflecting mirror is regulated, so that the distance between the laser ring and the opaque stop block arranged at the center of the rear end of the plane lens corresponds to the wire stripping length of the wire to be processed;
c. and coaxially penetrating the lead to be processed through the through hole in the center of the concave reflector until the top end of the lead to be processed enters a limit groove formed in the rear end of the light-tight stop block to contact and limit, and focusing the laser ring on the insulating sheath to finish wire stripping.
Preferably, in the step b, the laser ring radially corresponds to the insulating sheath of the wire to be processed, specifically:
let the inner diameter of the insulating sheath be r 0 The external diameter is R 0 Then (r) 0 +R 0 ) The inner diameter r of the laser ring is larger than or equal to/2 0 The outer diameter R of the laser ring is more than or equal to R 0 。
Preferably, in the step b, the distance between the first conical lens and the second conical lens is adjusted, specifically: the second conical lens is fixed, and the axial position of the first conical lens is adjusted;
preferably, in the step b, the distance between the planar lens and the concave reflecting mirror is adjusted, specifically: the concave reflector is fixed and adjusts the axial position of the plane lens.
The beneficial effects of the invention are as follows:
1. the portable laser wire stripping device is simple in structure and convenient to use, and is suitable for application fields needing portable or handheld laser wire stripping, such as the fields in which traditional desk-top or desktop laser wire stripping devices cannot be used, such as industrial automation on-site wiring, aerospace equipment on-site wiring and the like.
2. Compared with the method for cutting the wire insulation layer by the laser beams of two light paths and four light paths in the traditional method, the area of the cut covered by the laser is more complete, and the consistency of the cut at the same focal position of all parts in the insulation sheath is better; compared with the traditional method requiring cutting in a mechanical rotation mode, the method has no rotation mechanism, and can avoid the problem that the annular incision can not be closed due to laser beam deflection caused by poor mechanical coaxiality.
3. The wire stripping device can be used for adapting wires with various specifications, adjusting the distance between the first conical lens and the second conical lens can be used for adapting the radial size of the insulation sheath to be stripped, adjusting the distance between the planar lens and the concave reflector can be used for adapting the wire stripping distance, and rapidly and accurately completing wire stripping.
Drawings
Fig. 1 is a schematic structural diagram of a portable laser wire stripping device according to the present invention
FIG. 2 is a schematic view of a ring laser beam structure
FIG. 3 is a schematic view of a concave reflector structure
FIG. 4 is a schematic diagram showing the cooperation of a laser ring and a wire to be processed
Fig. 5 is an assembly schematic diagram of a portable laser wire stripping device using cage-type optical adjustment assembly
Wherein: 1-a laser source 2-a wire to be processed (21-an insulating sheath 22-a metal wire core), 3-a first conical lens 4-a second conical lens 5-a plane lens 6-an opaque stop 7-a concave reflector 8-a limit groove 9-an annular laser beam 10-an aperture 11-a through hole 12-a cage plate 13-a cage rod.
Detailed Description
The invention is illustrated in further detail by the following specific examples.
As shown in fig. 1, the portable laser wire stripping device provided by the invention comprises a laser source 1, a first conical lens 3, a second conical lens 4, a planar lens 5 and a concave reflector 7 which are coaxially arranged from front to back in sequence, wherein the conical tops of the first conical lens 3 and the second conical lens 4 are symmetrically arranged to form an annular laser beam 9 behind the second conical lens 4, as shown in fig. 2. The center of the rear end face of the plane lens 5 is provided with an opaque stop block 6, the rear end of the opaque stop block 6 is provided with a limit groove 8 for positioning the top end (front end) of the wire 2 to be processed, a concave curved surface of the concave reflecting mirror 7 is opposite to the plane lens 5 (namely, the concave curved surface is positioned on one side of the concave reflecting mirror 7 adjacent to the plane lens 5) and is used for focusing an annular laser beam transmitted through the plane lens 5, as shown in fig. 3, the center of the concave reflecting mirror 7 is coaxially provided with an axial through hole 11 for the wire 2 to be processed to pass through, and the front to back direction is the same as the left to right direction in fig. 1 in the invention.
Among the above components:
the laser source 1 is a laser source, and the emitted laser is collimated or nearly collimated; the laser power is 10-120W, the laser wavelength is 400-455nM blue laser, and the working mode can be continuous or pulse laser. The laser source can be a semiconductor solid state laser, a semiconductor optical fiber coupled laser, an optical fiber laser and the like, and the specific implementation mode of the laser source has no influence on the invention.
The first and second conical lenses 3, 4 are lenses composed of a conical surface and a plane, and the conical lenses are commonly used for generating a beam with Bessel intensity distribution or a conical non-divergent beam. The plane of the first conical lens 3 is aligned with the laser source 1, and the first conical lens 3 and the second conical lens 4 have the same specification and shape and are symmetrically arranged on the conical top. The annular laser beams 9 with different divergence angles can be obtained after the second conical lens 4 by adjusting the distance between the two, the refractive indexes and the physical cone angles of the first conical lens 3 and the second conical lens 4 are only related to the diameter of the finally generated annular laser beam, and the material and the film coating layer only influence the transmittance of the laser, so that the implementation mode of the invention is not influenced.
The planar lens 5 is a laser-transparent curvature-free lens. After passing through the planar lens 5, the annular laser beam 9 has no change on the distribution of laser energy, and the material and the film coating layer only have influence on the laser transmittance, so that the implementation mode of the invention is not influenced.
The opaque block 6 is made of a material which cannot transmit laser light and is resistant to high temperature, and can be made of metal or nonmetal. The front end face of the light-tight stop block 6 is tightly attached to the right center of the planar lens 5, a limit groove 8 at the rear end is used for temporarily fixing the top end of the wire 2 to be processed, the limit groove 8 and the planar lens 5 are coaxially arranged, and the limit groove 8 is a conical groove with the inner diameter uniformly enlarged backwards.
The light-tight stop 6 may be a cylinder or a cube. The light-tight stop block 6 is arranged coaxially with the plane lens 5 when being a cylinder; when the light-tight block 6 is a cube, one side (the side with the length and the width Gao Ren) is axially arranged along the plane lens 5, and the central axis of the plane lens 5 passes through the geometric center of the light-tight block 6. The outer edge of the light-tight stop block 6 is not more than the inner diameter edge of the annular laser beam 9 in the radial direction no matter what shape, namely, shielding of the annular laser beam 9 is avoided, and in the implementation, the light-tight stop block 6 is a cylinder coaxially arranged with the plane lens 5.
The concave reflecting mirror 7 is a conventional radial focusing mirror, the concave curved surface of which faces the annular laser beam 9, and the aperture of the through hole 11 at the center is larger than the outer diameter of the wire 2 to be processed and smaller than the inner diameter of the annular laser beam 9. The focal length of the concave mirror 7 together with the divergence angle of the annular laser beam 9 determines the radial dimension of the post-focusing laser ring 10.
The wire 2 to be processed is a general power or signal transmission wire. It has an inner metal core 22 and an insulating sheath 21 which completely covers the surface of the metal core 22. The maximum diameter of the wire 2 to be processed needs to be smaller than the inner diameter of the annular laser beam 9 (otherwise it cannot pass through the through hole 11).
The length of the required peeled insulating sheath 21 can be controlled by adjusting the distance between the planar lens 5 and the opaque block 6 to the concave mirror 7; the divergence angle of the annular laser beam 9 can be adjusted by adjusting the distance between the first conical lens 3 and the second conical lens 4, and the diameter of a laser ring 10 formed by focusing the concave reflector 7 is indirectly controlled so as to adapt to the wires 2 to be processed with different specifications.
As shown in fig. 4, the diameter requirements of the laser ring 10 are: if the inner diameter of the insulating sheath 21 is r 0 The external diameter is R 0 Then (r) 0 +R 0 ) The inner diameter r of the laser ring is larger than or equal to/2 0 The outer diameter R of the laser ring is more than or equal to R 0 . The inner edge of the laser ring 10 is flush with the inner edge of the insulating sheath 21 or slightly exceeds the inner edge of the insulating sheath 21 outwards, so that the metal wire core 22 clung to the inner edge of the insulating sheath 21 can be prevented from being irradiated, but the inner edge of the insulating sheath 21 cannot be exceeded too much, otherwise, the part of the insulating sheath 21 which can be irradiated by laser is too few, and the wire stripping is difficult to fall off; the outer edge of the laser diaphragm 10 is flush with or exceeds the outer edge of the insulating sheath 21, so that the insulating sheath 21 can be sufficiently covered to realize peeling.
As shown in FIG. 5, in this embodiment, the first cone lens 3 and the second cone lens 4 are both AX2520-A type cone lenses manufactured by Throbbs corporation in U.S., the plane lens 5 is a WG41010-UV plane lens manufactured by Throbbs corporation in U.S., the concave mirror 7 is a CM254-025-E02 concave mirror manufactured by Throbbs corporation in U.S., the laser source 1 is a 450nM 120W blue-light fiber coupled semiconductor laser system manufactured by Dai nationality and is matched with an F810APC-405 large caliber laser collimator, the optical components are assembled by a cage type optical adjustment assembly manufactured by Throbbs corporation in U.S., the cage type optical adjustment assembly comprises a plurality of cage plates 12 and four cage rods 13, each cage plate 12 is assembled in the cage type optical adjustment assembly, four corners of each cage plate 12 are arranged on the four cage rods 13 in a penetrating manner, and each optical component can be driven to axially move.
The laser wire stripping method of the portable laser wire stripping device comprises the following steps:
a. the laser source 1 (the optical fiber coupling semiconductor laser system is matched with the collimator) emits Gaussian distribution collimated laser beams with the diameter of about 8mm, an annular laser beam 9 is formed after passing through the first conical lens 3 and the second conical lens 4, and the annular laser beam passes through the plane lens 5 and is focused by the concave reflector 7 to obtain an laser ring 10;
b. adjusting the axial distance between the first and second axicon lenses 3, 4 (the second axicon lens 4 is fixed in this embodiment, the first axicon lens is adjusted)The mirror 3 is axially positioned so that the laser ring 10 radially corresponds to the insulating sheath 21 of the wire 2 to be processed (i.e., (r) 0 +R 0 ) The inner diameter r of the laser ring is larger than or equal to/2 0 The outer diameter R of the laser ring is more than or equal to R 0 In this embodiment, the laser circle inner diameter r=r 0 The outer diameter R of the laser ring is more than or equal to R 0 ) The method comprises the steps of carrying out a first treatment on the surface of the The axial distance between the plane lens 5 and the concave reflecting mirror 7 is adjusted (the concave reflecting mirror 7 is fixed in the embodiment, and the axial position of the plane lens 5 is adjusted) so that the distance between the laser ring 10 and the light-tight stop 6 corresponds to the wire stripping length of the insulating sheath 21 of the wire 2 to be processed;
c. the wire 2 to be processed is coaxially penetrated through a through hole 11 (diameter 10 mm) at the center of the concave reflecting mirror 7, the front end of the wire 2 to be processed enters a limit groove 8 to contact and limit, and at the moment, the laser ring 10 is focused on the insulating sheath 21 to finish wire stripping.
In the above method, if (r) of the laser circle in step b 0 +R 0 ) The internal diameter r of the laser ring is larger than or equal to/2 0 (i.e. the inner edge of the laser ring 10 slightly exceeds the inner edge of the insulating sheath 21 outwards), the insulating sheath 21 stripped in step c is also connected with the wire 2 to be processed, at this time, the portable laser wire stripping device is removed, and the stripped insulating sheath 21 is manually pulled out from the wire 2 to be processed.
Claims (4)
1. The laser wire stripping method is characterized by comprising the following steps of:
a. the laser source (1) emits collimated or nearly collimated laser beams, the laser beams form annular laser beams (9) after passing through a first conical lens (3) and a second conical lens (4) which are oppositely arranged on the conical top, and the annular laser beams (9) penetrate through a plane lens (5) and are focused by a concave reflector (7) to obtain a laser ring (10);
b. adjusting the distance between the first conical lens (3) and the second conical lens (4) to enable the laser ring (10) to radially correspond to the insulating sheath (21) of the wire (2) to be processed; the distance between the plane lens (5) and the concave reflecting mirror (7) is regulated, so that the distance between the laser ring (10) and the opaque stop block (6) arranged at the center of the rear end of the plane lens (5) corresponds to the wire stripping length of the wire (2) to be processed;
c. the wire (2) to be processed coaxially passes through the through hole (11) at the center of the concave reflector (7) until the top end of the wire (2) to be processed enters the limit groove (8) arranged at the rear end of the light-tight stop block (6) to be contacted and limited, and the laser ring (10) is focused on the insulating sheath (21) to finish wire stripping.
2. The laser wire stripping method as claimed in claim 1, characterized in that in step b the laser aperture (10) corresponds radially to the insulating sheath (21) of the wire (2) to be processed, in particular:
an inner diameter r of the insulating sheath (21) 0 The external diameter is R 0 Then (r) 0 + R 0 ) The inner diameter r of the laser ring is larger than or equal to/2 0 The outer diameter R of the laser ring is more than or equal to R 0 。
3. The laser wire stripping method according to claim 1, characterized in that in step b the distance between the first (3) and the second (4) conical lenses is adjusted, in particular: the second conical lens (4) is fixed, and the axial position of the first conical lens (3) is adjusted.
4. A laser wire stripping method as claimed in claim 1, characterized in that in step b the distance between the planar lens (5) and the concave mirror (7) is adjusted, in particular: the concave reflector (7) is fixed, and the axial position of the plane lens (5) is adjusted.
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| CN202111239733.7A CN114156718B (en) | 2021-10-25 | 2021-10-25 | Portable laser wire stripping device and wire stripping method thereof |
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| CN202111239733.7A CN114156718B (en) | 2021-10-25 | 2021-10-25 | Portable laser wire stripping device and wire stripping method thereof |
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| CN114156718B true CN114156718B (en) | 2023-07-18 |
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| CN110729669A (en) * | 2019-08-27 | 2020-01-24 | 东莞理工学院 | Cable axial cutting system and method based on phase type laser ranging |
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| CN101573204B (en) * | 2006-12-27 | 2014-01-15 | 罗伯特.博世有限公司 | Laser-beam working device and method for adjusting the focal position |
| DE102010002260A1 (en) * | 2010-02-23 | 2011-08-25 | Robert Bosch GmbH, 70469 | Measuring device for a laser beam processing device |
| CN105186391A (en) * | 2015-08-13 | 2015-12-23 | 苏州大学 | Hybrid wavelength laser wire-stripping method and wire-stripping apparatus of wire sheaths |
| JP2017142277A (en) * | 2016-02-08 | 2017-08-17 | 国立大学法人東京工業大学 | Evanescent light generator |
| EP3614512B1 (en) * | 2017-05-17 | 2020-08-19 | MD Elektronik GmbH | Laser cutting device for shielded lines and method for laser cutting shielded lines with such a laser cutting device |
| CN107363416A (en) * | 2017-07-12 | 2017-11-21 | 上海柏楚电子科技有限公司 | A kind of laser ring cutter device and its control method |
| AU2019203404A1 (en) * | 2018-05-15 | 2019-12-05 | Howmedica Osteonics Corp. | Fabrication of components using shaped energy beam profiles |
| CN113245694A (en) * | 2021-04-30 | 2021-08-13 | 华东师范大学 | Laser joint cutting device with adjustable machining size and controllable taper |
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| CN110729669A (en) * | 2019-08-27 | 2020-01-24 | 东莞理工学院 | Cable axial cutting system and method based on phase type laser ranging |
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