阅读说明：本技术 激光加工设备及激光加工方法 (Laser processing apparatus and laser processing method ) 是由 杨盛林 曾楷滨 樊景风 赵剑 陈焱 高云峰 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种激光加工设备,包括：激光加工装置,包括激光头和用于带动所述激光头在第一方向上移动的第一移动组件；抽吸装置,包括第二移抽吸组件和用于带动所述抽吸组件在所述第一方向上移动的第二移动组件；以及控制装置,分别与所述第一移动组件和所述第二移动组件信号连接,用于在激光切割的过程中控制所述抽吸组件在所述第一方向上保持与所述激光头同步移动。本发明还提供一种激光加工方法,包括步骤：在第一方向上移动激光头,使所述激光头对工件进行动态切割；在所述第一方向上移动抽吸组件,使所述抽吸组件跟随所述激光头在所述第一方向上进行同步移动；启动所述抽吸组件,使所述抽吸组件对切割过程中产生的烟尘进行抽吸。(The invention discloses a laser processing device, comprising: the laser processing device comprises a laser head and a first moving assembly for driving the laser head to move in a first direction; the suction device comprises a second moving suction assembly and a second moving assembly for driving the suction assembly to move in the first direction; and the control device is respectively in signal connection with the first moving assembly and the second moving assembly and is used for controlling the suction assembly to keep moving synchronously with the laser head in the first direction in the laser cutting process. The invention also provides a laser processing method, which comprises the following steps: moving a laser head in a first direction to enable the laser head to dynamically cut a workpiece; moving a suction assembly in the first direction such that the suction assembly follows the laser head in a synchronized movement in the first direction; and starting the suction assembly to enable the suction assembly to suck smoke generated in the cutting process.)

1. A laser machining apparatus, characterized by comprising:

the laser processing device comprises a first moving assembly and a laser head, wherein the first moving assembly is used for driving the laser head to move in a first direction, and the laser head is used for cutting a workpiece;

the suction device comprises a second moving assembly and a suction assembly, and the second moving assembly is used for driving the suction assembly to move in the first direction; and

and the control device is respectively in signal connection with the first moving assembly and the second moving assembly and is used for controlling the second moving assembly to drive the suction assembly to move in the laser cutting process so as to enable the suction assembly to keep moving synchronously with the laser head in the first direction.

2. The laser processing apparatus of claim 1, wherein the control device is configured to control the second moving assembly to move the suction assembly when the laser processing device is activated, so that the suction assembly is located on a center line of a laser beam emitted by the laser head.

3. The laser processing apparatus according to claim 1, further comprising a workpiece conveying device for conveying the workpiece in the first direction.

4. The laser processing apparatus according to claim 3, wherein the workpiece conveying device comprises an unwinding assembly, a pulling roller assembly and a conveying table, which are sequentially arranged along the first direction, wherein the unwinding assembly is used for unwinding the workpiece, the pulling roller assembly is used for pulling the workpiece to move along the first direction, and the conveying table is used for carrying the workpiece and conveying the workpiece along the first direction; the laser processing device and the suction device are respectively arranged on two opposite sides of the conveying workbench.

5. The laser machining apparatus of claim 4, further comprising two sealing baffles, the two sealing baffles being disposed on opposite sides of the pumping assembly in a second direction, the second direction being perpendicular to the first direction.

6. The laser machining apparatus of claim 1 wherein the laser machining device further includes a third moving assembly for moving the laser head in a second direction, the second direction being perpendicular to the first direction.

7. A laser processing method, characterized by comprising the steps of:

moving a laser head in a first direction to enable the laser head to dynamically cut a workpiece;

moving a suction assembly in the first direction such that the suction assembly follows the laser head in a synchronized movement in the first direction;

and starting the suction assembly to enable the suction assembly to suck smoke generated in the cutting process.

8. The laser machining method of claim 7, further comprising, before the synchronously moving the suction assembly in the first direction following the laser head:

moving the suction assembly in the first direction so that the suction assembly is positioned on a centerline of a laser beam emitted by the laser head.

9. The laser processing method of claim 7, further comprising:

conveying the workpiece in the first direction to pass the workpiece between the laser head and the suction assembly.

10. The laser processing method of claim 7, further comprising:

upon termination of the dynamic cut of the workpiece, the suction assembly is moved in the first direction to reposition the suction assembly to a resting area.

Technical Field

The invention relates to the technical field of laser processing, in particular to laser processing equipment and a laser processing method.

Background

In the process of processing a workpiece, the workpiece is often required to be cut by using a laser so as to cut off excess materials on the workpiece. In the laser cutting process, a high-temperature area is generated near the laser focus, and a cutting cavity is formed along with the impact of the auxiliary gas high-pressure airflow, so that the excess material is separated from the workpiece. When the workpiece is cut by laser, a great amount of waste gas and waste residue are generated along with some chemical reactions and exothermic reactions, so that smoke and dust are formed in the environment, and therefore, an air draft device must be arranged to suck the generated waste gas and waste residue away in the laser cutting process.

The scope of the produced waste gas waste residue of the great work piece of processing breadth is also bigger, in prior art, is usually divided into a plurality of subregion with the processing region of work piece, then corresponds at every subregion and sets up an updraft ventilator, and this kind of mode of setting is not only complicated in structure, and the cost is higher, and the suction effect is not good moreover, still has very big smoke and dust in the environment.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provided are a laser processing apparatus and a laser processing method, which can simplify the structure, reduce the cost, and improve the suction effect.

In order to solve the above technical problem, the present invention provides a laser processing apparatus, comprising:

the laser processing device comprises a first moving assembly and a laser head, wherein the first moving assembly is used for driving the laser head to move in a first direction, and the laser head is used for cutting a workpiece;

the suction device comprises a second moving assembly and a suction assembly, and the second moving assembly is used for driving the suction assembly to move in the first direction; and

and the control device is respectively in signal connection with the first moving assembly and the second moving assembly and is used for controlling the second moving assembly to drive the suction assembly to move in the laser cutting process so as to enable the suction assembly to keep moving synchronously with the laser head in the first direction.

The invention also provides a laser processing method, which comprises the following steps:

moving a laser head in a first direction to enable the laser head to dynamically cut a workpiece;

moving a suction assembly in the first direction such that the suction assembly follows the laser head in a synchronized movement in the first direction;

and starting the suction assembly to enable the suction assembly to suck smoke generated in the cutting process.

The embodiment of the invention has the following beneficial effects:

in the laser processing equipment and the laser processing method provided by the invention, the laser head can move in the first direction to dynamically cut a workpiece, and the suction component can synchronously move along with the laser head to realize dynamic suction, so that the suction component is always close to the cutting position, namely, the suction component is close to a smoke generation point, the smoke can be quickly sucked away by the suction component once generated, the smoke can be prevented from flying randomly, and the suction effect is better; in addition, in the invention, the suction requirement in a large area can be met only by arranging one suction assembly, and a suction device is not required to be arranged in each subarea respectively like the prior art, so the structure of the invention is simpler, and the production cost is favorably reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a schematic structural view of a laser machining apparatus of the present invention;

FIG. 2 is a flow chart of a laser processing method according to an embodiment of the present invention;

FIG. 3 is a flow chart of a laser processing method according to another embodiment of the present invention;

description of reference numerals:

100. a laser processing device; 110. a first moving assembly; 120. a laser head;

200. a suction device; 210. a second moving assembly; 220. a suction assembly;

300. a workpiece conveying device; 310. an unwinding assembly; 320. a pulling roll group; 330. a conveying work table;

400. a workpiece;

500. a leveling device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a laser processing apparatus capable of laser cutting a workpiece 400. The laser processing equipment comprises a laser processing device 100, a suction device 200 and a control device (not shown in the figure), wherein the laser processing device 100 is mainly used for carrying out laser cutting on a workpiece 400, the suction device 200 can suck away smoke dust generated in the cutting process, and the control device can respectively control the actions of the laser processing device 100 and the suction device 200.

The laser processing apparatus 100 includes a first moving assembly 110 and a laser head 120, the laser head 120 is used for cutting the workpiece 400, and the first moving assembly 110 is used for driving the laser head 120 to move in a first direction, so as to implement dynamic cutting of the workpiece 400. The suction device 200 comprises a second moving assembly 210 and a suction assembly 220, wherein the suction assembly 220 is used for sucking smoke dust, and the second moving assembly 210 is used for driving the suction assembly 220 to move in a first direction. The control device is in signal connection with the first moving assembly 110 and the second moving assembly 210 respectively, and when the laser processing apparatus 100 starts to cut the workpiece 400, the control device can control the second moving assembly 210 to be activated, and enable the second moving assembly 210 to drive the suction assembly 220 to move, so that the suction assembly 220 keeps moving synchronously with the laser head 120 in the first direction, that is, at which position of the workpiece 400 the laser head 120 cuts, the suction assembly 220 also moves synchronously to the corresponding position of the workpiece 400.

In the laser processing apparatus of the embodiment, the laser head 120 can move in the first direction to dynamically cut the workpiece 400, and meanwhile, the suction assembly 220 can synchronously move along with the laser head 120 to realize dynamic suction, so that the suction assembly 220 is always close to the cutting position, that is, the suction assembly 220 is close to the smoke generation point, the smoke can be quickly sucked away by the suction assembly 220 as soon as the smoke is generated, the smoke can be prevented from flying randomly, and the suction effect is good; moreover, in the present invention, only one suction assembly 220 is needed to meet the suction requirement in a large area, and there is no need to separately provide a suction device 200 in each partition as in the prior art, so the structure of the present invention is simpler, which is beneficial to reducing the production cost.

In one embodiment, the first moving assembly 110 includes a first driving member, a first driving screw, a first screw nut and a connecting frame, the first driving member is used for driving the first driving screw to rotate, the first screw nut is matched with the first driving screw, the first screw nut can perform linear movement along a first direction when the first driving screw rotates, and the connecting frame is connected to the first screw nut. In another embodiment, the linear transmission pair formed by the first transmission screw rod and the first screw rod nut can be replaced by a gear and a rack, the first driving piece is connected to the gear and used for driving the gear to rotate, the gear is meshed with the rack, when the gear rotates, the rack can linearly move along the first direction, and the connecting frame is connected to the rack. In other embodiments, the first moving assembly 110 can directly move the connecting member linearly in the first direction by using a linear motor. The laser head 120 is fixed to the connection frame.

Further, the laser processing apparatus 100 further includes a third moving assembly, and the third moving assembly is configured to drive the laser head 120 to move along a second direction, where the second direction is perpendicular to the first direction. For convenience of description, in one embodiment, the first direction is defined as a direction parallel to the X-axis, and the second direction is defined as a direction parallel to the Y-axis. The laser head 120 can move in the XY plane by the driving action of the first moving assembly 110 and the third moving assembly to perform various types of cutting on the workpiece 400. Specifically, the third moving assembly comprises a third driving piece, a third transmission screw rod and a third screw nut, the third driving piece is used for driving the third transmission screw rod to rotate, the third screw nut is matched with the third transmission screw rod, and when the third transmission screw rod rotates, the third screw nut can linearly move along the Y-axis direction, so that the laser head 120 is driven to move in the Y-axis direction.

It should be noted that, in some embodiments, the first moving assembly 110, the third moving assembly and the laser head 120 may be connected in sequence, and in other embodiments, the third moving assembly, the first moving assembly 110 and the laser head 120 may also be connected in sequence, only it is required to ensure that the laser head 120 can move in the X direction and the Y direction at the same time.

In this embodiment, the number of the first moving assemblies 110 is two, the two sets of first moving assemblies 110 are respectively disposed on two opposite sides of the workpiece 400 in the Y direction, the connecting frame is erected above the workpiece 400, two ends of the connecting frame are respectively connected to the two sets of first moving assemblies 110, and the two sets of first moving assemblies 110 synchronously move in the X-axis direction, so as to drive the connecting frame to stably move in the X-axis direction. Wherein, two first driving pieces are driving motor, and one of them driving motor is driving motor, and another driving motor is driven motor, and driven motor trails driving motor's action in real time, guarantees that the link can not turn round. The third moving assembly is disposed on the connecting frame, and the third moving assembly is connected to the laser head 120.

In an embodiment, the second moving assembly 210 includes a second driving member, a second transmission screw rod and a second screw nut, the second driving member is used for driving the second transmission screw rod to rotate, the second screw nut is engaged with the second transmission screw rod, when the second transmission screw rod rotates, the second screw nut can perform linear movement along the X-axis direction, and the suction assembly 220 is connected to the second screw nut. In another embodiment, the linear transmission pair composed of the second transmission screw and the second screw nut can be replaced by a chain wheel and a chain, the second driving member is connected to the chain wheel for driving the chain wheel to rotate, the chain is meshed with the chain wheel, the suction assembly 220 is connected to the chain, and when the chain wheel rotates, the chain can drive the suction assembly 220 to perform linear reciprocating movement along the X-axis direction. During the laser cutting process, the control device can control the second driving element to perform the action of tracking the first driving element, so that the suction assembly 220 can follow the laser head 120.

When the laser processing device 100 is started, the control device can control the second moving assembly 210 to act, so that the second moving assembly 210 drives the suction assembly 220 to move, the suction assembly 220 is located on a central line of a laser beam emitted by the laser head 120, and equivalently, the position of the suction assembly 220 is initially calibrated, so that the suction assembly 220 is close to the laser head 120 when a cutting program is started, in the subsequent cutting action, the suction assembly 220 moves along with the laser head 120 in real time, and the suction assembly 220 can be guaranteed to be always close to the laser head 120, and the suction effect is good.

The suction assembly 220 includes a suction assembly and a suction passage, one port of the suction passage is connected to the suction assembly, and the other port of the suction passage is disposed toward the workpiece 400, and smoke generated during cutting of the workpiece can be collected or exhausted through the suction passage. In one embodiment, the width of the suction channel towards a port of the workpiece 400 substantially covers the dimension of the workpiece 400 in the Y-axis direction, the suction assembly 220 can suck the generated fumes no matter where the laser head 120 moves in the Y-axis direction, and the suction assembly 220 does not need to move when the laser head 120 moves in the Y-axis direction. In another embodiment, the port of the suction channel may be relatively small, and a fourth moving assembly may be additionally provided, the fourth moving assembly being configured to move the suction assembly 220 along the Y-axis direction, so that when the laser head 120 moves in the XY plane, the suction assembly 220 moves in the XY plane along with the laser head 120.

It can be understood that guide slide rails are arranged in the first moving assembly 110, the second moving assembly 210, the third moving assembly and the fourth moving assembly to ensure the smooth movement of the laser head 120 and the suction assembly 220. The first driving piece, the second driving piece and the third driving piece can adopt absolute value servo motors.

Further, the laser processing apparatus further includes a workpiece conveying device 300, and the workpiece conveying device 300 is configured to convey the workpiece 400 in the first direction. The conveying speed of the workpiece 400 can be superposed with the moving speed of the laser head 120, so that the processing efficiency of the workpiece 400 is improved. The workpiece conveying device 300 comprises an unwinding assembly 310, a material pulling roller group 320 and a conveying workbench 330, wherein the unwinding assembly 310, the material pulling roller group 320 and the conveying workbench 330 are sequentially arranged along a first direction, the unwinding assembly 310 is used for unwinding the workpiece 400, the material pulling roller group 320 is used for drawing the workpiece 400 to move along the first direction, and the conveying workbench 330 is used for bearing the workpiece 400 and conveying the workpiece 400 along the first direction; the laser processing apparatus 100 and the suction apparatus 200 are respectively provided on opposite sides of the conveyance table 330 in the Z-axis direction. The workpiece 400 to be processed is made into a coil material form, the workpiece 400 is gradually uncoiled on the uncoiling assembly 310 and is pulled by the material pulling roller group 320 to be conveyed forwards, the material pulling roller group 320 comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel clamp the workpiece 400, and the driving wheel is driven by an external driving part to rotate, so that the workpiece 400 can be conveyed forwards; the conveying workbench 330 comprises two synchronizing wheels and a conveying belt sleeved on the two synchronizing wheels, the workpiece 400 is positioned on the conveying belt, when the synchronizing wheels rotate, the conveying belt can convey the workpiece 400 forwards, the conveying workbench 330 can further assist in conveying the workpiece 400 while playing a bearing role, and the workpiece 400 is guaranteed to have enough conveying power. The control device can control the unwinding speed of the unwinding assembly 310, the conveying speed of the material pulling roller group 320 and the conveying speed of the conveying workbench 330 to be consistent, so that the workpiece 400 is prevented from being wrinkled or pulled.

It should be noted that a hollow-out position is disposed on the conveying worktable 330 corresponding to a region to be cut of the workpiece 400, so that smoke generated when the workpiece 400 is cut can directly enter the suction assembly 220 through the hollow-out position.

Further, the laser processing apparatus further includes a leveling device 500, the leveling device 500 is disposed between the unwinding assembly 310 and the conveying worktable 330, and is used for leveling the workpiece 400, so that the workpiece 400 has a flat surface before entering the conveying worktable 330, and the laser head 120 is convenient to precisely process the workpiece 400. Preferably, the flattening device 500 is disposed between the unwinding assembly 310 and the pulling roll set 320.

Specifically, the leveling device 500 includes two rows of upper and lower compression rollers, and the two rows of upper and lower compression rollers are arranged in parallel, the axes of the compression rollers are perpendicular to the conveying direction of the workpiece 400, and the workpiece 400 passes through the upper and lower compression rollers to achieve the leveling effect.

The laser processing equipment further comprises an air blowing device (not shown in the figure), the air blowing device and the laser head 120 are arranged on the same side of the conveying workbench 330, namely, the air blowing device and the suction device 200 are respectively arranged on two opposite sides of the conveying workbench 330, when the workpiece 400 is cut, the workpiece 400 can be cooled by air flow blown out by the air blowing device, and in addition, the dust removal effect is better by a one-blowing-one-suction mode of the air blowing device and the suction device 200.

In order to avoid the generated smoke from flying randomly, the laser processing apparatus of the present invention further includes two sealing baffles, which are respectively disposed on two opposite sides of the suction assembly 220 in the Y-axis direction. Of course, sealing baffles may be provided on opposite sides of the suction module 220 in the X-axis direction, and the sealing baffles may block smoke from flying to other places than the suction module 220.

After the laser cutting is completed, the control device can control the second moving assembly 210 to move the suction assembly 220, so that the suction assembly 220 returns to the parking area, i.e. the origin position on the laser processing equipment. Returning the suction assembly 220 to the home position after each use, the control device can conveniently calculate the moving path of the suction assembly 220 when starting the cutting procedure, so that the suction assembly 220 can be accurately moved to the position aligned with the laser head 120.

Referring to fig. 2, the present invention further provides a laser processing method, including:

and 102, moving the laser head in the first direction to enable the laser head to dynamically cut the workpiece.

The laser beam emitted by the laser head can form a cutting line on the workpiece along with the movement of the laser head, so that the workpiece is cut. The laser head can move in the first direction through the first moving assembly, and the laser head can move back and forth in the first direction through the driving action of the first moving assembly.

It will be appreciated that the laser head may also be moved in a second direction to enable the laser head to be moved from both directions simultaneously to perform various forms of processing on the workpiece.

And 104, moving the suction assembly in the first direction to enable the suction assembly to move synchronously along with the laser head in the first direction. That is, by how much the laser head moves in the first direction, the suction assembly can also move the same distance in the first direction, such that the laser head and the suction assembly act in synchronization during the cutting process.

And 106, starting the suction assembly when the laser head starts to cut the workpiece, so that the suction assembly sucks smoke generated in the cutting process. Steps 102, 104 and 106 are performed substantially synchronously.

As shown in fig. 3, in an embodiment, the laser processing method further includes, before step 102:

the workpiece is transported 101 in a first direction to pass between the laser head and the suction assembly.

The moving speed of the laser head can be superposed with the conveying speed of the workpiece, and the cutting efficiency of the workpiece can be improved.

The conveying process of the workpiece can use the unreeling assembly to continuously unreel the workpiece, and the workpiece is conveyed forwards uninterruptedly by matching with the pulling roller set. The workpiece may also be leveled using a leveling device before it reaches the laser head.

In an embodiment, the laser processing method further includes, before step 104:

step 103, moving the suction assembly in a first direction to move the suction assembly to a position aligned with the laser head, specifically, to position the suction assembly on a centerline of a laser beam emitted by the laser head.

Before the suction module and the laser head are moved synchronously, the suction module and the laser head can be maintained in a high-precision corresponding relationship by the alignment check in step 103, and a high-precision corresponding relationship can be maintained at all times even in the subsequent synchronous movement.

In an embodiment, the laser processing method further includes:

when the dynamic cutting of the workpiece is completed, the suction assembly is moved in a first direction to reposition the suction assembly to the resting area, step 108.

The suction assembly is reset to the original position after each use, and when a cutting program is started, the control device can conveniently calculate the moving path of the suction assembly, so that the suction assembly can be accurately moved to the position aligned with the laser head.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.