Equipment for weakening leather instrument board through CO2 laser scanning

Abstract

The utility model discloses equipment for weakening a leather instrument panel by using CO2 laser scanning, which belongs to the technical field of automotive trim and comprises a clamp, a plurality of clamps, a sensor assembly and a scanning head, the clamp is provided with the plurality of clamps and the sensor assembly, and the scanning head is positioned above the sensor assembly. A total reflection mirror, an X-direction reflecting mirror, a Y-direction reflecting mirror and a focusing lens are arranged in the scanning head, the X-direction reflecting mirror is arranged on a light-emitting light path of the total reflection mirror, the Y-direction reflecting mirror is arranged on a light-emitting light path of the X-direction reflecting mirror, the focusing lens is arranged on a light-emitting light path of the Y-direction reflecting mirror, a dust removal cover is arranged in the focusing direction of the focusing lens, and a dust collection groove and a dust outlet are formed in the dust removal cover. A Z-direction motor is further arranged in the scanning head, the focusing lens is matched with the Z-direction motor, the Z-direction motor can adjust the position of the focusing lens, the surface state of genuine leather is well weakened through the method, and various environment tests can be passed; the residual thickness is accurately controlled, and an air bag bursting test can be passed; and the equipment price is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile interior decoration, in particular to a device for weakening a genuine leather dashboard by using CO2 laser scanning. Background Art

[0002] As people demand luxury car interiors, more and more car dashboards are made of leather. To ensure the safety of the co-pilot, the corresponding part of the dashboard on the co-pilot side must be "weakened" to guide the airbag to deploy smoothly. Since leather is rich in protein fibers, conventional weakening methods are difficult to handle.

[0003] Patent CN201480022873.0 describes a method for weakening dermis with femtosecond or picosecond lasers, using sensors to detect the energy of the transmitted laser to control the residual thickness. This method has more precise residual thickness control and better appearance quality. However, the disadvantage is that the equipment is expensive and has low power, long production cycle, and poor material applicability (composite materials cannot be cut) using short-pulse picosecond lasers or femtosecond lasers.

[0004] Patent CN201780019357.6 also describes a method for weakening the dermis using nanosecond ultraviolet lasers. The difference is that the method for controlling the residual thickness detects the illumination of the transmitted laser and uses nanosecond ultraviolet lasers. The disadvantage of this method is that the residual thickness control is not accurate.

[0005] Patent CN201620392398.2 describes a method of weakening leather by piercing it with a sewing needle. The disadvantage of this method is that the production cycle is long, and the weakened leather is prone to surface marks after thermal aging experiments.

[0006] Patent CN201620918526.2 describes a method of weakening the leather by thinning it as a whole and then compounding it with other materials. The disadvantage of this method is that the thinned leather will lose some mechanical properties and easily produce appearance defects in various environmental tests; and because there is no specific weakening line, it is difficult to ensure that the airbag will open completely according to the designed trajectory when it explodes.

[0007] Patent CN201010214574.0 describes a method of weakening leather using a cold knife; Patent CN201910996887.7 describes a method of weakening leather using chemical corrosion; Patent CN202010686092.9 describes a method of weakening leather using the edge of a die cutter. None of them can guarantee accurate residual thickness and good appearance quality.

[0008] The above utility models are unable to weaken the multi-layer composite instrument panel and are relatively costly. Utility Model Content

[0009] In view of the above problems, the utility model provides a device for weakening a leather dashboard by scanning with CO2 laser, including a fixture, a clamp, a sensor integration and a scanning head, wherein a plurality of clamps are provided on the fixture, a sensor integration is provided on the fixture, the scanning head is located above the sensor integration, a total reflector, an X-direction reflector, a Y-direction reflector and a focusing lens are provided in the scanning head, an X-direction reflector is provided on the light output path of the total reflector, a Y-direction reflector is provided on the light output path of the X-direction reflector, a focusing lens is provided on the light output path of the Y-direction reflector, a dust removal cover is provided in the focusing direction of the focusing lens, a dust suction groove and a dust outlet are provided in the dust removal cover, a Z-direction motor is also provided in the scanning head, the focusing lens cooperates with the Z-direction motor, and the Z-direction motor can adjust the position of the focusing lens. The surface state of the leather weakened by the utility model method is better, and it can pass various environmental tests; the residual thickness is accurately controlled, and it can pass the airbag bursting test; the equipment price is relatively low.

[0010] The technical solution of the utility model is as follows: a device for weakening a leather dashboard by scanning with CO2 laser, comprising: a fixture, a clamp, a sensor integration and a scanning head, wherein a plurality of clamps are arranged on the fixture, a sensor integration is arranged on the fixture, and the scanning head is located above the sensor integration.

[0011] A total reflector, an X-direction reflector, a Y-direction reflector and a focusing lens are arranged in the scanning head. An X-direction reflector is arranged on the light path of the total reflector, a Y-direction reflector is arranged on the light path of the X-direction reflector, and a focusing lens is arranged on the light path of the Y-direction reflector.

[0012] Furthermore, a dust removal cover is provided on the focusing direction of the focusing lens, and a dust suction groove and a dust outlet are provided in the dust removal cover.

[0013] Furthermore, a Z-direction motor is provided in the scanning head, and the focusing lens cooperates with the Z-direction motor, and the Z-direction motor can adjust the position of the focusing lens.

[0014] Furthermore, the sensor assembly is provided with a plurality of sensors and a plurality of blowing holes.

[0015] Furthermore, it also includes a guide rail, a rack, a gear and a motor. The fixture is provided with a motor, which cooperates with the rack through the gear. The fixture is slidably connected to the guide rail, and the rotation of the motor drives the fixture to move on the guide rail.

[0016] Furthermore, there are four or more clips.

[0017] The beneficial effects of the utility model are:

[0018] The surface state of the weakened leather by the utility model method is good and can pass various environmental tests; the residual thickness is accurately controlled and can pass the airbag bursting test; and the equipment price is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a weakening schematic diagram.

[0020] Figure 2 It is a schematic diagram of the overall layout of the utility model.

[0021] Figure 3 This is a schematic diagram of a scanning head of the utility model.

[0022] Figure 4 It is a schematic diagram of the dust removal hood of the utility model.

[0023] Figure 5 This is a schematic diagram of sensor integration of the utility model.

[0024] In the figure:

[0025] 1 parts, 2 fixtures, 3 clips, 4 weakening lines, 5 sensor integration, 6 dust cover, 7 scanning head, 8 guide rails, 9 racks, 10 gears, 11 motors, 501 sensors, 502 air holes, 601 dust suction slots, 602 dust outlets, 701 full reflector, 702 X-direction reflector, 703 Y-direction reflector, 704 focusing lens, 705 Z-direction motor, A laser. DETAILED DESCRIPTION

[0026] It should be noted that in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; the connection can be a mechanical connection or an electrical connection; the connection can be a direct connection or an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] A device for scanning a weakened leather dashboard using a CO2 laser comprises: a part 1, a fixture 2, a clip 3, a weakened line 4, a sensor assembly 5, a dust cover 6, a scanning head 7, a guide rail 8, a rack 9, a gear 10 and a motor 11.

[0029] The fixture 2 is provided with a motor 11 , which cooperates with the rack 9 through the gear 10 , and the fixture 2 is slidably connected to the guide rail 8 , and the motor 11 rotates to drive the fixture 2 to move on the guide rail 8 .

[0030] The fixture 2 is provided with a plurality of clips 3 , which can fix the part 1 on the fixture 2 . A weakening line 4 is provided on the part, a scanning head 7 is provided just above the weakening line 4 , and a sensor assembly 5 is provided on the fixture 2 below the weakening line 4 .

[0031] The scanning head 7 is provided with a total reflection mirror 701 , an X-direction reflection mirror 702 , a Y-direction reflection mirror 703 , a focusing lens 704 and a Z-direction motor 705 .

[0032] An X-direction reflector 702 is provided on the light output path of the total reflector 701, a Y-direction reflector 703 is provided on the light output path of the X-direction reflector 702, a focusing lens 704 is provided on the light output path of the Y-direction reflector 703, and the focusing lens 704 cooperates with the Z-direction motor 705, which can adjust the position of the focusing lens 704.

[0033] A dust cover 6 is provided in the focusing direction of the focusing lens 704, and a dust collecting groove 601 and a dust outlet 602 are provided in the dust cover 6.

[0034] The sensor assembly 5 is provided with a sensor 501 and a blowing hole 502 .

[0035] The leather-wrapped part 1 (instrument panel, generally including an injection-molded skeleton layer, a softened layer, and a leather layer) is mounted on a weakening fixture 2, and then a scanning CO2 laser A is used to process the designated weakening line 4 by a "circular punching" method. By changing the scanning speed, the combination of laser focal length, laser power, and gain parameters, and lowering the part temperature, the ablation effect of the CO2 laser on the leather is reduced, and the three-layer material is weakened at one time.

[0036] In the field of automotive dashboards, "laser weakening" = "laser drilling", that is, "weakening" the dashboard by "punching" it on the back. The number of holes generally ranges from 500 to 3,000, and each hole requires several laser pulses to complete.

[0037] The meaning of cyclic punching is: each hole is punched with one pulse in turn, and after a "circulation", the second, third, and so on pulses are punched into each hole until the processing is completed. This "cyclic punching" method is called "scanning"; in contrast, there is also a "continuous punching" working mode, in which several pulses of each hole are punched continuously, and the processing of the following holes will continue after the first hole is completed.

[0038] "CO2" is the light source of the laser, "scanning" is the working mode of the laser, and the direct working medium is the "laser pulse" emitted by the CO2 laser.

[0039] The materials of the softening layer include PU (polyurethane) foam, PP back foam, PVC back foam, 3D mesh, etc.

[0040] 3D mesh is the abbreviation of 3D warp knitted fabric, which is a three-dimensional structured textile with the advantages of breathability, high elasticity and low density.

[0041] “Leather dashboard without middle layer” means that the utility model is also applicable to dashboard without softening layer (only skeleton layer + leather layer).

[0042] The designated weakening line is processed by "circular punching" using a scanning CO2 laser, and the leather-wrapped dashboard is installed on a weakening fixture. The designated weakening line is located on the leather-wrapped dashboard. The leather-wrapped dashboard includes a middle layer of polyurethane foam. The leather-wrapped dashboard includes an injection-molded skeleton layer, a softening layer, and a leather layer. The speed of "circular punching" using a scanning CO2 laser is set to 50mm / s-150mm / s, and the speed is changed by changing the galvanometer rate.

[0043] The parameter combination of focal length and power is: large pulse P1=40%, focal length -1mm; small pulse P2=12%, focal length = -5mm, the temperature of the parts is reduced, and the temperature is set to: 0℃-20℃. The leather-covered dashboard is a leather dashboard with a middle layer of 3D mesh.

[0044] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any modification, equivalent replacement and improvement made by any technician familiar with the technical field within the technical scope disclosed by the utility model and within the spirit and principle of the utility model shall be covered by the protection scope of the utility model. At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A device for weakening leather dashboard using CO2 laser scanning, characterized in that: include: A fixture, a clamp, a sensor integration and a scanning head. The fixture is provided with multiple clamps, the fixture is provided with a sensor integration, the scanning head is located above the sensor integration, a total reflection mirror, an X-direction reflection mirror, a Y-direction reflection mirror and a focusing lens are arranged in the scanning head, an X-direction reflection mirror is arranged on the light output path of the total reflection mirror, a Y-direction reflection mirror is arranged on the light output path of the X-direction reflection mirror, and a focusing lens is arranged on the light output path of the Y-direction reflection mirror.

2. The device for weakening leather dashboard by using CO2 laser scanning according to claim 1, characterized in that: A dust removal cover is arranged on the focusing direction of the focusing lens, and a dust suction groove and a dust outlet are arranged in the dust removal cover.

3. The device for weakening leather dashboard by using CO2 laser scanning according to claim 1, characterized in that: A Z-direction motor is also provided in the scanning head, and the focusing lens cooperates with the Z-direction motor, and the Z-direction motor can adjust the position of the focusing lens.

4. The device for weakening leather dashboard by using CO2 laser scanning according to claim 1, characterized in that: The sensor assembly is provided with a plurality of sensors and a plurality of blowing holes.

5. The device for weakening a leather dashboard by using CO2 laser scanning according to any one of claims 1 to 4, characterized in that: It also includes a guide rail, a rack, a gear and a motor. The fixture is provided with a motor, which cooperates with the rack through the gear. The fixture is slidably connected to the guide rail, and the rotation of the motor drives the fixture to move on the guide rail.

6. The device for weakening leather dashboard by using CO2 laser scanning according to claim 5, characterized in that: There are more than four clips.

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