ES2223297B1 - OPTICAL TURN SYSTEM, FOR FLEXIBLE ANGLE FABRIC MARKING AND CORRESPONDING MARKING METHOD. - Google Patents

Abstract

Optical rotation system, for flexible angular tissue marking and corresponding marking method. It consists of a system that has a laser generator that is controlled by a computer and that has an optical box and a head that can be turned by manual or mechanical means to produce the marking of garments arranged in a robot or dummy, projecting the beam in horizontal, as well as to produce the marking of garments or fabrics arranged on a table, for which the beam is projected vertically. A method for the application of said system is claimed. Application in the manufacture of devices for marking garments positioned on mannequins as well as on tables.

Description

Optical rotation system, for angular marking Flexible fabric and corresponding marking method.

The technical sector of this invention is the of the modification of the dyeing of textile materials by means of Laser technology application, in order to modify affinity Dyeing of a tissue.

Garment marking by laser is coming performing on mannequin. That is, by arranging a laser that projects its beam horizontally to mark products textiles, garments, arranged or positioned in robots or dummies

However, the dialing system on a table. The table constitutes a horizontal surface that must be perpendicular to the beam to carry out the marking of the garment.

In this way, it is technically feasible to arrangement of a single laser generator with a head that orient the laser beam so that it can work horizontally or in vertical, as well as in other angular positions, simply, fast and with identity of functional characteristics in both positions.

Indication of prior art

It is 2165813 by "Method for the modification of Dyeing affinity of textile materials and transfer of images to a non-dyed textile surface ", and PCT / ES01 / 00281 of identical denomination, they disclose a method by which in a movement band, by means of a detection system of the garment position, an application of continuous laser radiation, and a dyeing and washing of the garment, whose modified dye affinity determines specific chromatisms in the tissue.

Industrial requirements create the need to be able to carry out low inertia production processes, that is to say, that in a short space of time you can modify all the parameters that define the production of the product.

The design of a flexible dialing system for tissues where any laser model, system can be integrated Optical deflection controlled by mirrors will allow you to configure the machine perfectly adapted to the final production expected The dialing operation is explained in the Patents En 2165813 "Method for affinity modification textile dyeing and image transfer to a non-dyed textile surface ", and PCT / ES01 / 00281.

The expression "flexible dialing" or "flexi system" for this purpose should be understood when it can be applied in different orientations between the vertical and the horizontal path of the beam, immediately, without disassemble or reconfigure the machine.

The essential part for this design, and that is the main reason for filing this patent is the design of an optical adjustment unit that allows the "Flexi System" You can mark with the head at any angle, which we call "Optical rotation system for flexible angular marking of tissues ".

This system allows form marking manual with automatic orientation option, on any surface, either on a table at 0º, on a robotic unit at 90º, or in turning processes of any angle, this being Fast movement and no need for further adjustments. This last feature is what provides the essence of the object of the invention, by facilitating a fast and flexible application.

For this function a complex has been designed mechanical-optical system that will allow focusing the system mirror marking on any field (X, Y), which this located with a Z axis from 0º to 360º.

The present invention aims at an optical rotation system, for flexible angular marking of tissues and corresponding marking method, which by means of a laser, for example "CO2 Slab" designed as a tool for cutting, welding or engraving, the elements of which is composed are integrated within a single closet of
control.

In order to make clearer the explanation that will follow, accompanied by three sheets of drawings that in six figures They represent the essence of the present invention.

Figure 1 shows a general scheme of marking system, in which the components are identified System Basics

Figure 2 shows a schematic of the apparatus laser generator

Figure 3 shows a view of the whole trace diode

Figure 4 shows a view of the system mechanical-optical

Figure 5 shows a view of the system mechanical-optical

Figure 6 shows a view of the system mechanical-optical

In these figures it is represented by:

1.1 the laser resonator

1.2 the optical tube

1.3 optical box

1.4 marking head

1.5 the central module of the computer

1.6 the computer screen

1.7 the laser source

1.8 the radio frequency source

2.1 the laser beam

2.2 the laser beam exit hole

2.3 the exit mirror

2.4 cooling output

2.5 radio frequency voltage

2.6 cooling input

2.7 the rear mirror

2.8 the active zone

2.9 waveguide electrodes

2.10 the radio frequency voltage

3.1 the red light laser diode

3.2 the mirror cylinder

3.3 the high reflection mirror

3.4 the focus lens

3.5 output beam expander

1 the protective cover of the optical cover

2 portalentes

3 the lens clamp ring

4 the mirror positioning cylinder tracer diode

5 the mirror holder of the tracer diode

6 the support base of the beam expander exit

7 the support ring of the beam expander exit

8 visible diode holder stage

9 support and diode adjustment unit visible

10 support flange of the movement cylinder tracer diode mirror

11 the general turning body

12 the turning cylinder

13 the spin core

14 hole for fixing the safety pin of the turn

15 the pivot shaft safety ring

16 the swivel system support cover

17 lens support structure

18 the base of the optical box

19 the main reference cover and support To be

20 adjustment plate I

21 adjustment plate II

22 fixing plate with laser resonator

23 the reinforcement strap of the optical box

Explanation of a preferred embodiment and explanation of the drawings Description of the laser system

The "Flexi System" is a laser system of any of the available types, and in this explanation and drawings is represented as an application example of CO2 Slab high frequency excited, designed for applications industrial as a tool for cutting, welding or engraving. He "Flexi System" is completely compact, as you can see in figures 1 and 4 to 6, that is, all the elements are integrated into a single control cabinet. As the Figure 1 shows the system can be divided into different parts

The laser resonator 1.1 (and figure 2) is where Find the laser generator, which is the device that generates the laser radiation to get the impression. To get the have the optimal characteristics from the point of view optical, a 1.2 optical tube of variable length is attached, in function of the intrinsic characteristics of the laser generator, to a distance less than one meter.

All the optical elements of the machine are they house inside the 1.3 optical box, which is protected with a safety cover Before removing the cover to proceed to the change lens, the machine must be with the safety key of shutter to the left, and verify that the indicator of Shutter is off. Dialing head 1.4 is in charge to modulate the laser beam to achieve image printing that has been prepared in the design program. It is a component Very sensitive and should be handled carefully. Laser output occurs through a protection window, which is the only one optical element that is accessed from the outside. This window must be checked periodically and in case it is detected dirt, will proceed to cleaning, as specified in the section that refers to the manipulation of components Optical

The unit is a 1.5 personal computer, which It is the one that performs the general control of the marking, which has of monitor peripherals (preferably 15 '' TFT), keyboard and preferably wireless mouse, on a special support to a side of the machine structure. It is possible under specification mount this set in another machine position, according to the need or comfort of the user. Together with the 1.7 laser source and the radio frequency (RF) source 1.8 is the screen of the computer, 1.6, in the central part of the control cabinet. The sensitive parts of the PC are protected with a door with key. When you open the door you have access to the floppy drive, the CD ROM, the reset button and the computer start-up button. You also have access to the filter change, which must be cleaned and reviewed weekly.

The laser is a Slab CO2 laser excited by high frequency, refrigerated by diffusion of CO2, designed to industrial applications as a tool for cutting, welding or Record. It can, as said, apply any other To be.

Figure 2 shows the principle of operation of the Slab laser. A laser gas discharge is generated                                      (active zone) 2.8 among 2.9 waveguide electrodes by radiofrequency voltage 2.5, 2.10. The rear mirror 2.7 and the exit mirror 2.3 form the optical resonator Inside the resonator the laser beam 2.1 is produced, which is emitted through a hole 2.2. To cool the electrodes Water 2.4, 2.6 is used.

Due to the nature of the electrodes in a slab laser, the emitted laser beam diverges at different speeds in the X (free space) and Y directions                        (Waveguide). To give the rounded shape to the beam it is necessary to reshape the output beam by of corrective reflective optics. This can be achieved through of simple optical elements or by combining optics cylindrical and spherical.

Depending on the resonator configuration, there are also many diffraction effects due to the optics of Departure from it. This can produce secondary lobes in the beam Main output, which must be scraped or filtered. Them and Get using a spatial filter.

After beam correction and filtration spatially, the quality of the beam of a slab laser is ideal for any material processing operation that requires a Excellent quality and stability.

The optical rotation system for angular marking flexible, constitutive of the essence of the patent, consists of two perfectly differentiated parts:

The optical box 1.3, which is where they are integrated all the different optical components to achieve the marking, is attached to a rotation cylinder 12 provided with a body general rotation 11 and a rotation core 13. The rotation core has a hole for a fixing plate 14 for a pin security.

The turning system is represented by indications 11 to 14.

Optical box

The elements that are integrated inside the box optics are:

The focus lens 3.4 with lens holder 2,3.17

Cylinder for tracer diode 4,

3.1 laser diode

Tracer diode 3.3 mirror that is susceptible to adopt two positions by displacement of the support 5 which supports the mirror of the tracer diode along cylinder 4 of positioning of the 5.1 mirror of the tracer diode,

The output beam expander 3.5.

The expander of the output beam 3.5, is the element that amplifies the diameter of the laser output beam, so that the size at the entrance of the marking head is 20 millimeters in diameter. Under no circumstances should it be manipulated or altered, since any small readjustment would cause the loss of the specifications of the
machine.

Tracer diode set

For the person who is producing garments or any product can see at all times where it is going to produce the marking, a complex system that the indicates with a visible laser (of visible wavelength), where will produce the marking, we call this set diode tracer.

The tracer diode assembly is formed by three concrete elements: 3.1, the red light laser diode by 632 nm example, with an optical focusing system Built-in 3.2, a displacement cylinder for example of 40 millimeters, which is associated with a mirror. This cylinder displaces the mirror and allows the diode to indicate with a point, a rectangle, or with a silhouette where the laser marking will be performed. 3.3 is a high reflection mirror.

The focus lens 3.4, is the element that defines the machine's work field, and that can be easily changed, since it is integrated in a support kit 17 which can be removed without any mechanical fixing element. This It is another feature of this new design, the ease changing from one lens to another, without using any tool.

The lenses that are integrated into the "Systems Flexi ", allow a marking area of n x m cm., The definition of the exact field of work is a function of the diameter of input beam to the optical system.

In the box, we can see an example of how what would be the focal length and beam diameter values for a 20 mm optical system input beam.

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Dialing area cm. Focal distance cm. Beam diameter mm 20 x twenty 30 0.2 - 0.3 30 x 30 Four. Five 0.7 50 x fifty 75 0.75 80 x 80 100 0.8 120 x 120 150 1.2 x 1.3

Marking head

This element is responsible for modulating the beam laser to get the impression of the image that has been Prepared in the design program. The method used by this Dialing system is an optical system of galvos.

Since the laser beam has no mass, potential limitations in speed and accuracy depend only of the method used to move the laser beam.

Laser control is achieved using two mirrors Small, lightweight attached to the digitally controlled galvos. This provides a simple but effective method of placing a beam of laser focused on an X-Y plane.

The galvos incorporate mirrors whose function is reflect the laser beam on the marking surface. These Mirrors have high reflectivity to the laser wavelength to achieve the maximum energy of the reflected laser beam.

The "Flexi System" allows working with the head in two positions, in a table option with the output at 0º and another position to be able to mark on a dummy or a robot to 90º, this adjustment is done easily. It is also feasible place the head at any point between 0 and 360º.

To make the turn, the pin is lifted and it is turned until it is retained in the upper position of unlock, we are already able to move the head. He pin has two positions, one of fixed position and another that turning the degrees that we need in order to place ourselves on the surface to print.

Automation of this turn is possible, and get the same effect through an automatism that performs the functions cited.

The turning system is integral to the head of marking and therefore must be handled gently. The system Turn has a safety device to prevent movements abrupt of the mentioned component.

It is susceptible of industrial application in the manufacture of affinity modification devices tissue dyeing, and for the treatment of garments ready made

Claims (9)

1. Optical rotation system, for flexible angular tissue marking, comprising a laser generator and a laser beam conduction system for its projection, characterized in that it comprises: - An optical box (1.3) with means for laser beam conduction, - means (1.5, 1.6, 1.7, 1.8) for command and marking head control (1.4), optical tube (1.2) and laser resonator (1.1); - A marking head (1.1) with means for the angular modification of the projection of the generated laser beam by the laser generator. 2. Optical rotation system for flexible angular tissue marking according to claim 1, characterized in that the marking head (1.1) is provided with means for the rotation of its body so that it has a rotation core with movement activity manual or automatic 3. Optical rotation system for flexible angular tissue marking according to claim 1, characterized in that the optical box is essentially formed by an output beam expander (3.5), a laser tracer diode (3.1) and a mirror (3.3 ) for the tracer diode (3.1), arranged before a focusing lens (3.4) with lens holders (2, 3, 17). 4. Optical rotation system, for flexible angular marking of tissues, according to claim 3 and one of 1 to 2, characterized in that the mirror (3.3) is of high reflection and is capable of adopting two positions by displacement of a support (5) that supports the tracer diode mirror, along a cylinder (4) positioning the tracer diode mirror (5.1). 5. Optical rotation system, for flexible angular tissue marking according to claim 3 and any one of claims 1 to 2 or 4 to 5, characterized in that the focusing lens (3.4) defines the working field of the machine, and It is arranged on a support kit (17) that does not have any mechanical fixing element, so that it is easily replaceable. 6. Optical rotation system, for flexible angular tissue marking according to claim 3, and one of claims 1 to 2 or 4 to 6, characterized in that the optical box is attached to a rotation cylinder (12) provided with a general turning body (11), a turning core (13). 7. Optical rotation system, for flexible angular marking of tissues, according to claim 6, characterized in that the rotation core has a hole for fixing plate (14) for a rotation security pin. 8. Optical rotation system for flexible angular tissue marking according to claim 3 and any of claims 1 to 2 or 4 to 8, characterized in that the tracing diode (3.1) is formed by a laser diode, a cylinder with mirror (3.2) and a high reflection mirror (3.3). 9. Method for flexible angular marking of tissues, according to any of claims 1 to 8, characterized in that having a head capable of being rotated by manual or automated means, projects, at the user's choice, the laser beam towards the corresponding tissue in horizontal for garments positioned on mannequins or robots; or vertically for garments arranged on tables, so that the laser generator, optical box, marking head, are controlled by a module (1.5) of a computer, as well as its laser source (1.7), and radiofrequency source (1.8 ) so that garments located on both mannequins or robots, and on tables are marked by the action of the laser under the control of the computer operator, by a simple operation of changing the orientation of the marking head.