Laser processing device and system

Abstract

The utility model discloses a laser processing device and system. The laser processing device comprises a focusing element, a mode switching part, a nozzle and a shell, the focusing element is arranged in the shell and used for forming different laser spots on the surface of a workpiece to be machined by switching between the first position and the second position so as to complete welding or cleaning of the workpiece to be machined. The mode switching part is arranged on the shell and is used for adjusting the focusing element to a first position or a second position so as to realize a welding mode or a cleaning mode; the nozzle is arranged on the light emitting side of the shell and used for enabling the laser to pass through and emit out. According to the utility model, laser spots with different focal lengths can be formed in a welding mode or a cleaning mode so as to complete a welding process or a cleaning process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to laser processing technical field especially, it relates to a laser processing device and system. BACKGROUND

[0002] With the rapid development of modern industrial technology, laser welding as a kind of efficient, accurate and environmental protection connection technology, has been widely used in aerospace, automobile manufacturing, electronic communication, medical equipment and other fields.Laser welding is by using high-energy density laser beam as heat source, makes the welding material rapidly melts and solidifies, thereby realizing the firm connection of material.

[0003] In laser welding technology, welding torch as the output and focusing device of laser beam, its performance directly determines the quality and efficiency of welding, the traditional welding torch design often only pays attention to welding function, cannot integrate cleaning function.

[0004] In recent years, there are many improved laser welding torches, can realize welding and cleaning function simultaneously, but when function switching needs manual disassembly focusing mirror and replacement, through manual change the position of focusing mirror, also need manual replacement welding and cleaning corresponding nozzle, cannot use same nozzle to carry out welding and cleaning simultaneously, operation is very tedious, influence the length and complexity in processing process.In addition, the existing laser welding torch needs to provide protective gas when welding, it is used for atmosphere protection and air isolation at welding position, prevents welding position from being oxidized by air when welding. UTILITARY MODEL CONTENTS

[0005] Therefore, the utility model provides a laser processing device and system.

[0006] In order to solve the above technical problem, the utility model adopts the technical scheme that:

[0007] A kind of laser processing device, it include: focusing element, mode switching part, nozzle, shell;

[0008] The focusing element is arranged in the shell, is used to form different laser spots on the surface of the workpiece to be processed by switching in the first position or the second position, to complete welding or cleaning to the workpiece to be processed;

[0009] The mode switching part is arranged on the shell, for adjusting the focusing element to the first position or the second position to realize welding mode or cleaning mode;

[0010] The nozzle is arranged on the light-emitting side of the shell, for passing and emitting the laser.

[0011] In some embodiments, a driving unit is further included, which is connected with the focusing element and used to drive the focusing element to switch to the first position or the second position.

[0012] In some embodiments, the focusing element is further used to switch to a third position, so as to form different laser spots on the surface of the workpiece to be processed, so as to complete cutting of the workpiece to be processed.

[0013] The nozzle is further used for cutting.

[0014] In some embodiments, the mode switching part is located at the welding mode position or the cleaning mode position and switches between the welding mode position and the cleaning mode position.

[0015] In some embodiments, the mode switching part is a trigger part, and one press, two continuous presses of the trigger part are respectively used to realize the welding mode or the cleaning mode.

[0016] In some embodiments, the focusing element is further used to switch to a third position, so as to form different laser spots on the surface of the workpiece to be processed, so as to complete cutting of the workpiece to be processed.

[0017] The mode switching part is further used to adjust the focusing element to the first position, the second position or the third position to realize the welding mode, the cleaning mode or the cutting mode.

[0018] The mode switching part is a trigger part, one press, two continuous presses or three continuous presses of the trigger part are respectively used to realize one of the welding mode, the cleaning mode or the cutting mode, and the three pressing modes correspond to different modes.

[0019] In some embodiments, the mode switching part is further located at the cutting mode position and switches between the cutting mode position, the welding mode position and the cleaning mode position, so as to adjust the focusing element to the first position, the second position or the third position to realize the welding mode, the cleaning mode or the cutting mode.

[0020] The nozzle is further used for cutting.

[0021] In some embodiments, the focusing element is one of a focusing mirror, a collimating mirror or a reflecting mirror.

[0022] In some embodiments, the driving unit includes a lead screw arranged along a first direction and a driving motor connected with the lead screw, the lead screw being connected with the focusing element.

[0023] Or,

[0024] The driving unit comprises a stator, a rotor, the stator contains a piezoelectric ceramic, the stator is connected with the rotor, and the rotor is connected with the focusing element.

[0025] Alternatively,

[0026] The driving unit comprises a magnetic force part.

[0027] A laser processing device comprises a focusing element, a mode switching part, a nozzle, and a housing.

[0028] The focusing element is arranged in the housing and is used to form different laser spots on the surface of a workpiece to be processed by switching between a first position and a third position, so as to complete welding or cutting of the workpiece to be processed.

[0029] The mode switching part is arranged on the housing and is used to adjust the focusing element to the first position or the third position to realize a welding mode or a cutting mode.

[0030] The nozzle is arranged on the light-emitting side of the housing and is used for both welding and cutting.

[0031] A laser processing device comprises a focusing element, a mode switching part, a nozzle, and a housing.

[0032] The focusing element is arranged in the housing and is used to form different laser spots on the surface of a workpiece to be processed by switching between a second position and a third position, so as to complete cleaning or cutting of the workpiece to be processed.

[0033] The mode switching part is arranged on the housing and is used to adjust the focusing element to the second position or the second position to realize a cleaning mode or a cutting mode.

[0034] The nozzle is arranged on the light-emitting side of the housing and is used for both cleaning and cutting.

[0035] A laser processing system comprises a laser generating device and a laser processing device.

[0036] The laser generating device is connected with the laser processing device and is used to generate laser and transmit the laser to the laser processing device.

[0037] A laser processing system comprises a laser generating device, a functional air compressor, and a laser processing device.

[0038] The laser generating device is connected with the laser processing device and is used to generate laser and transmit the laser to the laser processing device, and the functional air compressor is used to generate compressed air and blow away smoke and dust near the nozzle.

[0039] The embodiment of the present application has at least the following beneficial effects:

[0040] The utility model discloses through mode switching part can accurately adjust the position of focusing element, ensure that the laser forms different laser spots on the surface of the workpiece to be processed under the welding mode or cleaning mode, to complete the welding or cleaning of the workpiece to be processed, and after switching from the welding mode to the cleaning mode or switching from the cleaning mode to the welding mode, cleaning and welding are carried out, and the same nozzle is used without replacing the nozzle, and the welding mode or the cleaning mode can be accurately switched without replacing the focusing element. In this way, the convenience of processing is greatly improved, and the processing time is saved. In addition, the mode switching part also has a cutting mode position, and the same nozzle is used without replacing the nozzle to realize cutting, and the processing efficiency is greatly improved. In addition, since the workpiece to be processed is processed by the welding and then cleaning mode, protective gas is not needed during welding, and after welding is completed, the weld is cleaned, so that the required weld quality and appearance requirements are achieved, and the cost of protective gas is completely saved. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0042] Figure 1 It is a structure schematic view of the laser processing device in an embodiment.

[0043] Figure 2 It is a partial enlarged structure schematic view of the laser processing device in another embodiment.

[0044] Figure 3 It is a structure schematic view of one kind of mode of the driving unit of the laser processing device in an embodiment.

[0045] Figure 4 It is a structure schematic view of another kind of mode of the driving unit of the laser processing device in an embodiment.

[0046] Figure 5 It is a schematic view of the laser light path of the laser processing device in an embodiment.

[0047] Figure 6 It is a schematic view of the laser beam corresponding to three modes of the laser processing device in an embodiment.

[0048] Figure 7 It is Figure 6 The schematic view of the laser beam in the surface of the workpiece to be processed in an embodiment forms three kinds of laser spots after being enlarged 5 times.

[0049] Wherein, 1-focusing element, 2-mode switching unit, 3-nozzle, 4-housing, 5-driving unit, 6-collimating assembly, 7-light guide rod, 8-reflective assembly, 9-protection assembly;

[0050] 51-screw, 52-driving motor, 53-stator, 54-rotor, 531-piezoelectric ceramic. DETAILED DESCRIPTION

[0051] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the utility model, it is understood that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0052] It should be noted that in this paper, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, article or device including the element.

[0053] The following will be combined Figures 1 to 5 The laser processing device involved in the utility model is further explained and described in detail, wherein the first direction is the X direction.

[0054] In an embodiment of the laser processing device, as shown in Figure 1 The laser processing device comprises a focusing element 1, a mode switching assembly 2, a nozzle 3, a housing 4.

[0055] The focusing element 1 is arranged in the housing 4, and is used to form different laser spots on the surface of the workpiece to be processed by switching between the first position or the second position, so as to complete the welding or cleaning of the workpiece to be processed; the mode switching part 2 is arranged on the housing 4, and can be located in the welding mode position or the cleaning mode position, and can be switched between the welding mode position and the cleaning mode position, so as to adjust the focusing element 1 to the first position or the second position to realize the welding mode or the cleaning mode; the nozzle 3 is arranged on the light emitting side of the housing 4, and is used for both welding and cleaning, so that the nozzle 3 does not need to be replaced during welding and cleaning. The nozzle 3 is internally provided with a through laser channel to pass through and emit the laser.

[0056] In the embodiment, the laser processing device can accurately adjust the position of the focusing element 1 through the mode switching part 2, and form different laser spots on the surface of the workpiece to be welded or cleaned, so as to complete the welding process or the cleaning process. After switching from the welding mode to the cleaning mode or from the cleaning mode to the welding mode, cleaning and welding are performed using the same nozzle without replacing the nozzle 3 (i.e., the same nozzle 3 is used in the welding mode and the cleaning mode), and the focusing element 1 does not need to be disassembled and replaced with a new focusing element with a different focal length, so that the welding mode or the cleaning mode can be accurately switched.

[0057] It should be noted that the focusing element 1 is a focusing mirror in this embodiment, and can also be a collimating mirror or a reflecting mirror in other embodiments, which are not shown.

[0058] In an embodiment of the laser processing device, the laser processing device further comprises a driving unit 5 connected with the focusing element 1, and used to drive the focusing element 1 to switch to the corresponding first position or the second position.

[0059] In another embodiment, the mode switching part 2 can also be located in the cutting mode position, and can be switched between the cutting mode position, the welding mode position and the cleaning mode position, so as to adjust the focusing element 1 to the first position or the second position or the third position to realize the welding mode or the cleaning mode or the cutting mode, and the nozzle 3 is used for both welding, cleaning and cutting.

[0060] It should be noted that the cutting mode position, the welding mode position and the cleaning mode position are different positions of the mode switching part 2.

[0061] The focusing element 1 is also used to switch to the third position, so as to form different laser spots on the surface of the workpiece to be processed, so as to complete the cutting of the workpiece to be processed; and the nozzle 3 is also used for cutting.

[0062] The driving unit 5 is also used to drive the focusing element 1 to switch to the corresponding third position according to the cutting mode.

[0063] The drive unit 5 can drive the focusing element 1 to switch to the corresponding position according to the mode position of the mode switching unit 2, thereby realizing mode switching.

[0064] In this embodiment, the linkage between the mode switching unit 2 and the drive unit 5 enables the drive unit 5 to precisely adjust the position of the focusing element 1 in different modes.

[0065] Specifically, in the welding mode position, the mode switching unit 2 is used to drive the focusing element 1 to a preset first position (i.e., the welding position) via the drive unit 5 when in welding mode.

[0066] In welding mode, the focusing element 1 is adjusted to a preset welding position to generate a suitable laser spot for welding on the surface of the workpiece to be processed, thereby completing the welding of the workpiece to be processed.

[0067] In the cleaning mode position, the mode switching unit 2 is used to drive the focusing element 1 to a preset second position (i.e., the cleaning position) via the drive unit 5 when in cleaning mode.

[0068] In cleaning mode, the focusing element 1 is adjusted to a preset cleaning position so that a suitable laser spot is generated on the surface of the workpiece to be processed, thereby completing the cleaning of the workpiece to be processed.

[0069] Thus, the mode switching unit 2 is located in the welding mode position or the cleaning mode position, thereby realizing the switching between the welding mode position and the cleaning mode position.

[0070] In another embodiment, the mode switching unit 2, in the cutting mode position, is used to drive the focusing element 1 to a preset third position (i.e., the cutting position) via the driving unit 5 when in welding mode.

[0071] In the cutting mode, the focusing element 1 is adjusted to a preset cutting position to generate a suitable laser spot on the surface of the workpiece to be processed, thereby completing the cutting of the workpiece.

[0072] Thus, the mode switching unit 2 is located in the welding mode position, the cleaning mode position, or the cutting mode position, thereby realizing the switching between the welding mode position, the cleaning mode position, and the cutting mode position.

[0073] It should be noted that the mode position can be switched from any one mode position to another.

[0074] More specifically, the mode switching unit 2 is located at the handle of the housing 4 and is used to generate a switching signal according to the user's switching operation and send it to the drive unit 5;

[0075] The driving unit 5 is used to drive the focusing element 1 to move to a first position or a second position according to the switching signal.

[0076] In this embodiment, the user can easily switch between cleaning mode and welding mode by simply using the operation mode switching unit 2; when the user performs the switching operation, the mode switching unit 2 generates a corresponding switching signal and sends it to the drive unit 5.

[0077] After receiving the switching signal, the drive unit 5 will drive the focusing element 1 to move along the first direction (such as the X direction) to the corresponding cleaning position or welding position according to the preset program and parameters.

[0078] For example, the mode switching unit 2 is usually located in a position that is convenient for the user to operate, such as on the handle of the welding torch or in an easily accessible location.

[0079] After the mode switching unit 2 switches to the corresponding mode position, it generates a switching signal corresponding to that mode position, thereby the drive unit 5 determines whether the focusing element 1 needs to be moved to the cleaning position or the welding position based on the switching signal.

[0080] In this embodiment, the focusing element 1 changes its position along a first direction (such as the X direction) under the drive of the driving unit 5, thereby generating different laser spots and thus realizing the corresponding welding and cleaning functions.

[0081] In this embodiment, the mode switching unit 2 is a trigger unit, which enables welding mode and cleaning mode respectively when pressed once and pressed twice consecutively.

[0082] The trigger can precisely switch between welding mode and cleaning mode by pressing it a different number of times.

[0083] Specifically, when a user needs to perform welding operations, they only need to press the trigger once to activate the drive unit 5. The drive unit 5 then drives the focusing element 1 to move to the preset welding position (i.e., the first position) according to the preset program and parameters. At this time, after the laser passes through the focusing element 1, it will form a laser spot suitable for welding on the surface of the workpiece to be processed, thereby completing the welding process.

[0084] When the user completes the welding operation and needs to clean the weld, he / she only needs to press the trigger twice to activate the drive unit 5. The drive unit 5 then drives the focusing element 1 to move to the preset cleaning position (i.e., the second position) according to the preset program and parameters. At this time, after the laser passes through the focusing element 1, it will form a laser spot suitable for cleaning on the surface of the workpiece to be processed, thereby completing the cleaning process.

[0085] In another embodiment, the mode switching unit is a trigger unit, which enables one of the following modes: welding mode, cleaning mode, or cutting mode, respectively, by pressing once or pressing twice consecutively, and the two pressing methods correspond to different modes.

[0086] Specifically, users can select one of the welding, cleaning, or cutting modes with a single press based on their daily operating habits or process requirements, and select one of the remaining two modes with two consecutive presses. This allows for the selection of the corresponding mode and gives users more autonomy.

[0087] For example, one press corresponds to the cleaning mode, and two consecutive presses correspond to the cutting mode.

[0088] In another embodiment, the mode switching unit 2 is a trigger unit, which enables one press, two consecutive presses, and three consecutive presses to be one of the welding mode, cleaning mode, or cutting mode, respectively, and the three pressing methods correspond to different modes. The nozzle 3 is also used for cutting.

[0089] Specifically, when a user needs to perform a cutting operation, they only need to press the trigger three times in a row to activate the drive unit 5. The drive unit 5 then drives the focusing element 1 to move to the preset cutting position (i.e., the third position) according to the preset program and parameters. At this time, after the laser passes through the focusing element 1, it will form a laser spot suitable for cutting on the surface of the workpiece to be processed, thereby completing the cutting process.

[0090] It should be noted that the number of consecutive presses can be adjusted to the corresponding mode according to the user's usage habits and other conditions. For example, two consecutive presses correspond to the welding mode, and three consecutive presses correspond to the cleaning mode.

[0091] In another embodiment, such as Figure 2 As shown, the mode switching unit 2 is a switching switch, which can be toggled to the left or right to switch between welding mode and cleaning mode respectively.

[0092] Similarly, the middle position of the switch can be used to correspond to the cutting mode.

[0093] In this embodiment, the user can easily switch between cleaning mode, welding mode and cutting mode by simply operating the switch 21.

[0094] In another embodiment, the mode switching unit 2 is a knob with at least two positions, which can be rotated clockwise or counterclockwise to achieve the welding mode or cleaning mode respectively.

[0095] Similarly, a third setting can be configured to correspond to the cutting mode.

[0096] In this embodiment, users can easily switch between cleaning mode, welding mode and cutting mode by simply rotating the knob clockwise or counterclockwise to the corresponding position.

[0097] For example, when the focusing element 1 is moved to the welding position, the laser passes through the focusing element 1 at that position and eventually forms a welding laser spot on the surface of the workpiece to be processed for welding.

[0098] When the focusing element 1 moves to the cleaning position, the laser beam passes through the focusing element 1 at that position and eventually forms a cleaning laser spot on the surface of the workpiece to be processed.

[0099] For example, the focusing element 1 moves to the welding position (first position) to form a +5 joule laser spot, thereby realizing the welding process.

[0100] The focusing element 1 moves to the cleaning position (second position) to form a -5 joule laser spot, thereby realizing the cleaning process.

[0101] It should be noted that, Figure 6 The diagram illustrates, for enlarged view, the laser spots formed on the surface of the workpiece in welding mode, cleaning mode, and a laser spot at 0 joules. These laser spots differ in size and may also differ in shape because the position of focusing element 1 changes, causing the laser focal point to be at different heights, which is reflected on the surface of the workpiece as different laser spots. The diagram illustrates three different laser spots formed on the surface of the workpiece.

[0102] exist Figure 6 The image does not show the light spot in the cutting mode, but the principle is the same. It is achieved by setting the mode switching unit 2 to the cutting mode position and adjusting the position of the focusing element 1 to the third position to cut the workpiece to be processed.

[0103] Of course, the 0-joule laser spot can also be used as a cutting laser spot for cutting processing.

[0104] The cleaning position and welding position can be a specific location or a range; within the range, the focal length can be finely adjusted according to the specific welding or cleaning situation to obtain the best focusing effect.

[0105] In this embodiment, the mode switching unit 2 is located at the handle position of the housing 5, and the drive unit 5 is located inside the housing 4 and on one side of the focusing element 1.

[0106] For example, such as Figure 3As shown, the drive unit 5 includes a lead screw 51 arranged along a first direction and a drive motor 52. The drive motor 52 is connected to the lead screw 51, and the lead screw 51 is connected to the focusing element 1.

[0107] The drive motor is connected to the mode switching unit 2. After receiving the switching signal, it drives the lead screw to rotate forward or reverse, thereby moving the focusing element 1 on the lead screw, which in turn drives the focusing element 1 to switch between the cleaning position, the cutting position and the welding position.

[0108] In another embodiment, the driving unit 5 includes a piezoelectric ceramic part, which converts electrical energy into mechanical energy. When a certain voltage is applied, the piezoelectric ceramic will undergo a slight deformation, which can be converted into the moving distance required by the focusing element 1 by the amplification mechanism.

[0109] Specifically, such as Figure 4 As shown, the drive unit 5 includes a stator 53 and a rotor 54. The stator 53 contains a piezoelectric ceramic 531. The stator 53 and the rotor 54 are connected in cooperation. The rotor 54 is connected to the focusing element 1.

[0110] By adjusting different modes through the mode switching unit 2, the electric field applied to the piezoelectric ceramic 531 of the stator 53 is changed. The particles on the surface of the stator 53 move in an elliptical motion under the high-frequency vibration generated by the piezoelectric ceramic. The motion is transmitted to the rotor 54 through friction, causing the rotor 54 to start moving, thereby realizing the switching between welding mode and cleaning mode.

[0111] In another embodiment, the driving unit 5 includes a magnetic part, which can use a permanent magnet to achieve the driving function. The movement of the focusing element 1 can be controlled by changing the direction of the magnetic field of the permanent magnet.

[0112] In one embodiment of a laser processing apparatus, the laser processing apparatus further includes a collimation component 6, which is disposed before the laser light input side of the focusing element 1. The collimation component 6 is used to form the laser into parallel light and project it onto the galvanometer (i.e., the reflector) before it reaches the focusing element 1.

[0113] In this embodiment, the collimation component 6 shapes the divergent and expanded laser beam into collimated beams for emission. These collimated beams have a stable diameter and energy distribution, allowing the focusing element 1 to focus and adjust them. Through the cooperation of both, precise control and energy transfer of the laser beam can be achieved during welding and cleaning processes.

[0114] In one embodiment of a laser processing apparatus, the laser processing apparatus further includes a light guide rod 7, which is disposed before the laser light input side of the collimation component 6 and is used to conduct laser light to the collimation component 6.

[0115] In one embodiment of a laser processing apparatus, the laser processing apparatus further includes a reflective component 8, which is disposed on the laser emission side of the collimation component 6 and is used to change the direction of the laser and project it onto the focusing element 1.

[0116] In one embodiment of a laser processing apparatus, the laser processing apparatus further includes a protective component 9, which is disposed on the laser emission side of the focusing element 1. The protective component 9 is used to absorb and disperse part of the laser energy and heat, reduce the burden on the internal lens of the element 1, help extend the service life of the focusing element 1, and reduce maintenance and replacement costs.

[0117] In one embodiment of a laser processing apparatus, a feedback component and a control component are further included; the feedback component is used to detect the current position of the focusing element 1; the control component is used to confirm whether the current switch to the first position or the second position has been successfully completed based on the current position of the focusing element 1 fed back by the feedback component, that is, to confirm whether the switch to the cleaning mode or the welding mode has been successfully completed.

[0118] In this embodiment, the feedback component can use a position sensor, photoelectric sensor, etc., to capture the position changes of the focusing element 1 in real time.

[0119] The feedback and control components ensure that after the mode switching component 2 switches modes, the focusing element 1 moves to the corresponding position, thus avoiding switching failure and operational losses.

[0120] In some embodiments, in a laser processing apparatus embodiment, such as Figure 1 As shown, the laser processing device includes: a focusing element 1, a mode switching component 2, a nozzle 3, and a housing 4;

[0121] A focusing element 1 is disposed within the housing 4 and is used to form different laser spots on the surface of the workpiece by switching between a first position and a third position, thereby completing the welding or cutting of the workpiece. A mode switching unit 2 is disposed on the housing 4 and can be located in either a welding mode position or a cutting mode position, and can switch between these positions to adjust the focusing element 1 to either the first or third position to achieve the welding or cutting mode. A nozzle 3 is disposed on the light-emitting side of the housing 4 and is used for both welding and cutting; therefore, it is not necessary to replace the nozzle 3 during welding and cutting. The nozzle 3 has a through-type laser channel inside to allow the laser to pass through and exit.

[0122] In this embodiment, the laser processing device can precisely adjust the position of the focusing element 1 through the mode switching unit 2, and form different laser spots on the surface of the workpiece to be welded or cut, thereby completing the welding process or the cutting process. Moreover, when switching from the welding mode to the cutting mode or from the cutting mode to the welding mode, the same nozzle is used for cutting and welding without the need to replace the nozzle 3 (i.e., the same nozzle 3 is used for both the welding mode and the cutting mode), and there is no need to disassemble the focusing element 1 and replace it with a new focusing element with a different focal length, so that the welding mode or the cutting mode can be switched accurately.

[0123] In some embodiments, in a laser processing apparatus embodiment, such as Figure 1 As shown, the laser processing device includes: a focusing element 1, a mode switching component 2, a nozzle 3, and a housing 4;

[0124] A focusing element 1 is disposed within the housing 4 and is used to form different laser spots on the surface of the workpiece by switching between a second position and a third position, thereby completing the cleaning or cutting of the workpiece. A mode switching unit 2 is disposed on the housing 4 and can be located in either a cleaning mode or a cutting mode position, and can switch between these two positions to adjust the focusing element 1 to either the second or third position to achieve the cleaning or cutting mode. A nozzle 3 is disposed on the light-emitting side of the housing 4 and is used for both cleaning and cutting; therefore, it is not necessary to replace the nozzle 3 during cleaning and cutting. The nozzle 3 has a through-type laser channel inside to allow the laser to pass through and exit.

[0125] In this embodiment, the laser processing device can precisely adjust the position of the focusing element 1 through the mode switching unit 2, and form different laser spots on the surface of the workpiece to be cleaned or cut, thereby completing the cleaning process or the cutting process. Moreover, the same nozzle is used for cutting and cleaning when switching from the cleaning mode to the cutting mode or vice versa (i.e., the same nozzle 3 is used for both the cleaning mode and the cutting mode), and there is no need to disassemble the focusing element 1 and replace it with a new focusing element with a different focal length. The cleaning mode or the cutting mode can be switched accurately.

[0126] It should be noted that the mode switching unit 2 of this utility model can be set to have only 2 positions (any 2 of the welding, cleaning and cutting positions), or it can be set to have 3 positions (welding, cleaning and cutting positions).

[0127] The working process of this invention:

[0128] The mode switching unit 2 is set to the welding mode position so as to adjust the focusing element 1 to the first position to realize the welding mode;

[0129] Unprotected gas laser welding is performed on the workpiece to form a weld.

[0130] Complete the welding process;

[0131] The mode switching unit 2 is set to the cleaning mode position so as to adjust the focusing element 1 to the second position to achieve the cleaning mode;

[0132] Without changing the nozzle, perform surface cleaning of the weld.

[0133] Complete the cleaning process.

[0134] Specifically, in the cleaning mode, under the action of the laser spot, the surface oxidation and blackening of the weld formed during the previous welding is effectively removed, the workpiece surface is cleaned, and the weld quality and aesthetics are improved to meet the requirements.

[0135] After the welding process is completed, this utility model can quickly switch to the cleaning mode through the mode switching unit 2 to clean the weld seam of the previous welding process. The switch from welding mode to cleaning mode is quick and easy.

[0136] It is precisely because this application can quickly and easily switch from welding mode to cleaning mode that the process from welding to cleaning can be completed quickly, and it also means that no additional protective gas or very little protective gas is needed to isolate the weld from air and prevent oxidation during the welding process.

[0137] In one embodiment of a laser processing system, the system includes a laser generating device and a laser processing device; the laser generating device is connected to the laser processing device and is used to generate laser light and transmit it to the laser processing device.

[0138] The laser processing apparatus adopts the configuration of the above embodiment.

[0139] In a laser processing system, the system includes a laser generating device, a functional air compressor, and a laser processing device;

[0140] The laser generating device is connected to the laser processing device and is used to generate laser light and transmit it to the laser processing device. The functional air compressor is used to generate compressed air and deliver it to the vicinity of the nozzle to disperse the smoke and dust.

[0141] Because this invention employs a welding-then-cleaning method, the oxidized portion of the weld is effectively removed by the subsequent cleaning step after welding. This eliminates the need for a protective gas to prevent oxidation during welding. Furthermore, the functional air compressor is used to blow out air, which is completely different from existing technologies that require nitrogen cylinders or nitrogen generators to blow out the protective gas. The air blown out by the functional air compressor is used to disperse the fumes generated during welding, cutting, and cleaning, replacing the protective gas used in existing technologies, thus significantly reducing costs.

[0142] A functional air compressor can be configured as a small compressor and integrated into the system.

[0143] The laser processing apparatus adopts the configuration of the above embodiment.

[0144] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0145] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A laser processing apparatus, characterized in that, The system comprises a focusing element, a mode switching part, a nozzle, and a housing. The focusing element is arranged in the housing and is used to form different laser spots on the surface of a workpiece to be processed by switching between a first position and a second position, so as to complete welding or cleaning of the workpiece to be processed. The mode switching part is arranged on the housing and is used to adjust the focusing element to the first position or the second position to realize a welding mode or a cleaning mode. The nozzle is arranged on the light-emitting side of the housing and is used to pass and emit the laser. The system further comprises a driving unit connected to the focusing element and used to drive the focusing element to switch to the first position or the second position.

2. The laser processing apparatus according to claim 1, characterized by The focusing element is further used to switch to a third position to form different laser spots on the surface of a workpiece to be processed, so as to complete cutting of the workpiece to be processed.

3. The laser processing apparatus according to claim 1, characterized by The nozzle is further used for cutting. The mode switching part is located in a welding mode position or a cleaning mode position and switches between the welding mode position and the cleaning mode position.

4. The laser processing apparatus according to claim 1, characterized by The mode switching part is a trigger part, and one press and two continuous presses of the trigger part correspond to the welding mode or the cleaning mode.

5. The laser processing apparatus according to claim 1, characterized by The focusing element is further used to switch to a third position to form different laser spots on the surface of a workpiece to be processed, so as to complete cutting of the workpiece to be processed.

6. The laser processing apparatus according to claim 1, characterized by The mode switching part is further used to adjust the focusing element to the first position, the second position, or the third position to realize the welding mode, the cleaning mode, or the cutting mode. The mode switching part is a trigger part, and one press, two continuous presses, and three continuous presses of the trigger part correspond to one of the welding mode, the cleaning mode, or the cutting mode, and the three pressing modes correspond to different modes. The mode switching part is further located in a cutting mode position and switches between the cutting mode position, the welding mode position, and the cleaning mode position to adjust the focusing element to the first position, the second position, or the third position to realize the welding mode, the cleaning mode, or the cutting mode.

7. The laser processing apparatus according to claim 3, characterized by The nozzle is further used for cutting. The focusing element is one of a focusing mirror, a collimating mirror, or a reflecting mirror.

8. The laser processing apparatus according to claim 1, characterized by The driving unit comprises a lead screw arranged in a first direction, and a driving motor connected to the lead screw, and the lead screw is connected to the focusing element.

9. The laser processing apparatus according to claim 2, characterized by Alternatively, The driving unit comprises a stator containing a piezoelectric ceramic and a rotor, the stator is connected to the rotor, and the rotor is connected to the focusing element. Alternatively, The driving unit comprises a magnetic force part. The system comprises a laser generating device and a laser processing device as claimed in any one of claims 1-9.

10. A laser processing system characterized by comprising: The laser generating device is connected to the laser processing device and is used to generate and transmit laser to the laser processing device. The system comprises a laser generating device, a functional air compressor, and a laser processing device as claimed in any one of claims 1-9.

11. A laser processing system characterized by comprising: ​ The laser generating device is connected with the laser processing device, used for generating laser and transmitting to the laser processing device, and the function air compressor is used for generating compressed air and blowing away the smoke dust after being delivered to the vicinity of the nozzle.

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