Laser cutting device and cutting method

Abstract

The present invention provides a laser cutting device and a cutting method, and relates to the field of cutting technology. The laser cutting device includes: a laser head; a dust collection box, the top of which is set as an opening; a first support rod, which is connected to one side of the opening along the extension direction of the dust collection box; a second support rod, which is connected to the other side of the opening along the extension direction of the dust collection box, and a cutting seam is formed between the second support rod and the first support rod, and the second support rod can be switched between a first position and a second position, and when the second support rod is in the first position, the upper surface of the second support rod is flush with the upper surface of the first support rod, and when the second support rod is in the second position, the upper surface of the second support rod is lower than the upper surface of the first support rod. The present invention can improve the smoothness of copper foil feeding, save feeding time, and greatly improve cutting efficiency.

Description

Technical Field

[0001] The present invention relates to the field of cutting technology, and in particular to a laser cutting device and a cutting method. Background Art

[0002] Laser cutting technology is particularly important in the processing of ultra-thin metal foil materials in the fields of electronics, aerospace, satellite communications, 5G, etc., because these fields have extremely high requirements on the precision and quality of materials. Compared with traditional die cutting and chemical etching methods, laser cutting is more environmentally friendly, does not produce chemical pollution, and meets the current environmental protection control requirements.

[0003] Due to the soft nature of the ultra-thin metal foil material itself, most traditional laser cutting devices often lack an effective support and conveying mechanism, which can easily lead to uneven loading of the ultra-thin metal foil material, affecting the continuity of the cutting operation and resulting in poor cutting efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a laser cutting device and a cutting method.

[0005] In the first aspect, an embodiment of the present invention provides a laser cutting device, comprising: a laser head; a dust collection box, the top of which is set to be an opening; a first support rod, the first support rod being connected to one side of the opening along the extension direction of the dust collection box; a second support rod, the second support rod being connected to the other side of the opening along the extension direction of the dust collection box, and a cutting seam is formed between the second support rod and the first support rod, the second support rod being able to switch between a first position and a second position, when the second support rod is in the first position, the upper surface of the second support rod is flush with the upper surface of the first support rod, and when the second support rod is in the second position, the upper surface of the second support rod is lower than the upper surface of the first support rod; and a first driving mechanism, the first driving mechanism is drivingly connected to the laser head to drive the laser head to move in the horizontal and vertical directions.

[0006] Optionally, a first cavity is provided in the first support rod, and a plurality of first suction holes connected to the first cavity are provided on the upper surface of the first support rod; a second cavity is provided in the second support rod, and a plurality of second suction holes connected to the second cavity are provided on the upper surface of the second support rod; both the first cavity and the second cavity can form a negative pressure state.

[0007] Optionally, the laser cutting device further comprises a second driving mechanism, which is drivingly connected to the second supporting rod to drive the second supporting rod to move vertically so that the second supporting rod switches between the first position and the second position.

[0008] Optionally, the laser cutting device also includes a support plate, the support plate includes a feed side support plate and a discharging side support plate, the feed side support plate is connected to the upper surface of the first support rod, the feed side support plate is provided with a first through hole connected to the first suction hole, the discharging side support plate is connected to the upper surface of the second support rod, the discharging side support plate is provided with a second through hole connected to the second suction hole, when the second support rod is in the first position, the upper surface of the feed side support plate is flush with the upper surface of the discharging side support plate, the cutting seam is formed between the feed side support plate and the discharging side support plate, when the second support rod is in the second position, the upper surface of the discharging side support plate is lower than the upper surface of the feed side support plate.

[0009] Optionally, the dust collection box includes an opening groove, a mounting plate and a guide groove, the opening groove is arranged on the open side of the top of the dust collection box, when the second support rod is in the second position, the discharge side support plate overlaps the opening groove, the two mounting plates are symmetrically connected to the inner sides of the dust collection box, the two ends of the first support rod are respectively connected to one side of the top of the two mounting plates, the guide groove is arranged on the other side of the top of the mounting plate, and the two ends of the second support rod are slidably arranged in the guide grooves on the top of the two mounting plates.

[0010] Optionally, the dust collection box further includes an exhaust pipe, one end of which is in communication with an inner cavity of the dust collection box, and the other end of which is used for connecting to an external dust treatment device.

[0011] Optionally, the laser cutting device also includes a blowing mechanism, which includes a push-pull rod, an air cylinder, a piston and a blowing pipe, one end of the push-pull rod is connected to the second support rod, the other end of the push-pull rod is vertically arranged downward and connected to the piston, the piston is slidably arranged in the air cylinder, one end of the blowing pipe is connected to the lower part of the inner cavity of the air cylinder, and the other end of the blowing pipe is facing above the opening of the cutting seam.

[0012] Optionally, the laser cutting device further includes an exhaust mechanism, which is connected to the first cavity and the second cavity to exhaust the gas in the first cavity and the second cavity.

[0013] Optionally, the first driving mechanism includes an X-axis driving module and a Z-axis driving module, the laser head is connected to the Z-axis driving module, the Z-axis driving module is used to drive the laser head to move in a vertical direction, and the Z-axis driving module is connected to the X-axis driving module, and the X-axis driving module is used to drive the Z-axis driving module to move in a horizontal direction.

[0014] The beneficial effect of the laser cutting device of the embodiment of the present invention is that the second support rod can be switched between the first position and the second position. When cutting, the second support rod is in the first position, and the upper surface of the second support rod is flush with the upper surface of the first support rod, so that the copper foil is laid flat on the upper surface of the second support rod and the upper surface of the first support rod. The laser head is driven by the first driving mechanism to move along the direction of the cutting seam to cut into strips of copper foil, and the dust after cutting can also be collected by the dust collection box. When loading, the strip of copper foil on the upper surface of the second support rod is taken away, so that the cutting of the copper foil The cut side continues to be transported to the upper surface of the second supporting rod. At the same time, the second supporting rod is switched from the first position to the second position, so that the upper surface of the second supporting rod is gradually lower than the upper surface of the first supporting rod, so as to avoid the cut side of the copper foil being stuck in the cutting seam during transportation, so that the cut side of the copper foil can smoothly contact the upper surface of the second supporting rod, and then the second supporting rod is switched from the second position to the first position, so that the second supporting rod is flush with the first supporting rod again, ready for the next cutting. In this way, the smoothness of copper foil feeding is improved, the feeding time is saved, and the cutting efficiency is greatly improved.

[0015] In a second aspect, an embodiment of the present invention further provides a cutting method of a laser cutting device, comprising the following steps:

[0016] S1: conveying the copper foil from the upper surface of the first supporting rod to the upper surface of the second supporting rod, and gradually switching the second supporting rod from the first position to the second position;

[0017] S2: When the copper foil passes through the cutting slit, the second support rod gradually switches from the second position to the first position, so that the copper foil is laid flat on the upper surfaces of the first support rod and the second support rod;

[0018] S3: Control the laser head to move in the vertical direction through the first driving mechanism to reach a preset height, and then control the laser head to move in the horizontal direction through the first driving mechanism to cut the copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a laser cutting device according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the installation structure of the first support rod and the second support rod in the laser cutting device according to an embodiment of the present invention;

[0021] Figure 3 for Figure 1 A magnified view of the structure at A;

[0022] Figure 4 A schematic structural diagram of a laser cutting device according to another embodiment of the present invention;

[0023] Figure 5It is a structural schematic diagram of the laser cutting device according to an embodiment of the present invention when the second supporting rod is in the first position;

[0024] Figure 6 It is a structural schematic diagram of the laser cutting device according to an embodiment of the present invention when the second supporting rod is in the second position;

[0025] Figure 7 Schematic diagram of the installation of the second driving mechanism and the air extraction mechanism in the laser cutting device according to an embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the first driving mechanism in the laser cutting device according to an embodiment of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of a piston in an initial position in a laser cutting device according to an embodiment of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure when the piston in the laser cutting device of an embodiment of the present invention begins to press down.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Laser head; 2. Dust collection box; 21. Opening groove; 22. Mounting plate; 221. Guide groove; 23. Exhaust pipe; 3. First support rod; 31. First suction hole; 32. First cavity; 4. Second support rod; 41. Second suction hole; 42. Second cavity; 5. First driving mechanism; 51. X-axis driving module; 52. Z-axis driving module; 6. Second driving mechanism; 7. Exhaust mechanism; 8. Support plate; 81. Feed side support plate; 811. First perforation; 82. Discharge side support plate; 821. Second perforation; 9. Blowing mechanism; 91. Push-pull rod; 92. Air cylinder; 93. Piston; 94. Blowing pipe. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or embodiments in a suitable manner.

[0033] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood 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 features.

[0034] The Z axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the up, and the negative direction of the Z axis represents the down; the X axis in the accompanying drawings represents the horizontal direction, and is designated as the left and right positions, and the positive direction of the X axis represents the left side, and the negative direction of the X axis represents the right side; the Y axis in the accompanying drawings represents the front and back positions, and the positive direction of the Y axis represents the front side, and the negative direction of the Y axis represents the back side. It should also be noted that the aforementioned Z axis, Y axis, and X axis 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] An embodiment of the present invention provides a laser cutting device, comprising: a laser head 1; a dust collection box 2, the top of the dust collection box 2 is set to be open; a first support rod 3, the first support rod 3 is connected to one side of the opening along the extension direction of the dust collection box 2; a second support rod 4, the second support rod 4 is connected to the other side of the opening along the extension direction of the dust collection box 2, and a cutting seam is formed between the second support rod 4 and the first support rod 3, the second support rod 4 can switch between a first position and a second position, when the second support rod 4 is in the first position, the upper surface of the second support rod 4 is flush with the upper surface of the first support rod 3, when the second support rod 4 is in the second position, the upper surface of the second support rod 4 is lower than the upper surface of the first support rod 3; and a first driving mechanism 5, the first driving mechanism 5 is connected to the laser head 1 to drive the laser head 1 to move in the horizontal and vertical directions.

[0036] Specifically, combined Figure 1 and Figure 2As shown, the top of the dust collection box 2 is the part of the dust collection box 2 along the positive direction of the Z axis, the extension direction of the dust collection box 2 is along the X axis, the conveying direction of the copper foil is along the positive direction of the Y axis, and the first support rod 3 and the second support rod 4 are integrally formed with a hollow groove to reduce the manufacturing cost of the first support rod 3 and the second support rod 4 and achieve lightweight of the first support rod 3 and the second support rod 4.

[0037] It should be noted that the laser cutting device is suitable for cutting ultra-thin metal foils, such as copper, nickel, stainless steel, copper foil, titanium foil, etc. In order to facilitate the explanation of the principle of the laser cutting device, copper foil is listed below to illustrate the principle of this case.

[0038] In this optional embodiment, combined with Figure 1 and Figure 2 As shown, the second support rod 4 can switch between the first position and the second position. When cutting, the second support rod 4 is in the first position, and the upper surface of the second support rod 4 is flush with the upper surface of the first support rod 3, so that the copper foil is laid flat on the upper surface of the second support rod 4 and the upper surface of the first support rod 3. The laser head 1 is driven by the first driving mechanism 5 to move along the direction of the cutting seam to cut into strip copper foil, and the dust after cutting can also be collected by the dust collecting box 2. When loading, after the strip copper foil on the upper surface of the second support rod 4 is taken away, the cut side of the copper foil continues to move toward the second support rod 4. The upper surface of the support rod 4 is transported, and at the same time, the second support rod 4 is switched from the first position to the second position, so that the upper surface of the second support rod 4 is gradually lower than the upper surface of the first support rod 3, to avoid the cut side of the copper foil being stuck in the cutting seam during transportation, so that the cut side of the copper foil can smoothly contact the upper surface of the second support rod 4, and then the second support rod 4 is switched from the second position to the first position, so that the second support rod 4 is flush with the first support rod 3 again, ready for the next cutting, thus improving the smoothness of copper foil feeding, saving feeding time, and greatly improving cutting efficiency.

[0039] Optionally, a first cavity 32 is provided in the first support rod 3, and a plurality of first suction holes 31 connected to the first cavity 32 are provided on the upper surface of the first support rod 3; a second cavity 42 is provided in the second support rod 4, and a plurality of second suction holes 41 connected to the second cavity 42 are provided on the upper surface of the second support rod 4; both the first cavity 32 and the second cavity 42 can form a negative pressure state.

[0040] In this optional embodiment, combined with Figure 1 , Figure 2 and Figure 3As shown, a plurality of first suction holes 31 can be evenly distributed along the extension direction of the first support rod 3, and a plurality of second suction holes 41 can also be evenly distributed along the extension direction of the first support rod 3. When the copper foil is laid flat on the upper surface of the first support rod 3 and the upper surface of the second support rod 4, a negative pressure state is formed by the first cavity 32 and the second cavity 42. The first suction holes 31 and the second suction holes 41 can absorb the lower surface of the copper foil, thereby improving the stability of the copper foil during cutting, avoiding displacement or deformation of the copper foil during cutting, and thus improving the cutting quality.

[0041] Optionally, the laser cutting device further comprises a second driving mechanism 6, which is drivingly connected to the second supporting rod 4 to drive the second supporting rod 4 to move vertically, so that the second supporting rod 4 switches between the first position and the second position.

[0042] In this optional embodiment, combined with Figure 7 As shown, the second driving mechanism 6 starts a linear driving device such as a cylinder and an electric push rod. For example, when the second driving mechanism 6 is a cylinder, the cylinder is installed in the dust collection box 2, and the output end of the cylinder is vertically arranged upward and connected to the second support rod 4, thereby realizing the change in the height position of the second support rod 4 and realizing the switching of the second support rod 4 between the first position and the second position.

[0043] Furthermore, the laser cutting device also includes a supporting plate 8, which includes a feed side supporting plate 81 and a discharging side supporting plate 82. The feed side supporting plate 81 is connected to the upper surface of the first supporting rod 3, and the feed side supporting plate 81 is provided with a first through hole 811 connected to the first suction hole 31. The discharging side supporting plate 82 is connected to the upper surface of the second supporting rod 4, and the discharging side supporting plate 82 is provided with a second through hole 821 connected to the second suction hole 41. When the second supporting rod 4 is in the first position, the upper surface of the feed side supporting plate 81 is flush with the upper surface of the discharging side supporting plate 82, and a cutting seam is formed between the feed side supporting plate 81 and the discharging side supporting plate 82. When the second supporting rod 4 is in the second position, the upper surface of the discharging side supporting plate 82 is lower than the upper surface of the feed side supporting plate 81.

[0044] In this optional embodiment, in order to prevent the copper foil from directly contacting the upper surface of the first support rod 3 and the upper surface of the second support rod 4, the feed side support plate 81 and the discharge side support plate 82 are connected to the upper surface of the first support rod 3 and the upper surface of the second support rod 4. The feed side support plate 81 and the discharge side support plate 82 can be made of smooth and wear-resistant materials. When the copper foil is spread flat on the upper surface of the feed side support plate 81 and the discharge side support plate 82, the first suction hole 31 is connected to the first perforation 811, and the second suction hole 41 is connected to the second perforation 821, thereby achieving adsorption of the lower surface of the copper foil.

[0045] Furthermore, the dust collecting box 2 includes an opening groove 21, a mounting plate 22 and a guide groove 221. The opening groove 21 is arranged on the open side of the top of the dust collecting box 2. When the second support rod 4 is in the second position, the discharge side support plate 82 is overlapped on the opening groove 21. The two mounting plates 22 are symmetrically connected to the inner sides of the dust collecting box 2. The two ends of the first support rod 3 are respectively connected to one side of the top of the two mounting plates 22. The guide groove 221 is arranged on the other side of the top of the mounting plate 22. The two ends of the second support rod 4 are slidably arranged in the guide grooves 221 on the top of the two mounting plates 22.

[0046] In this optional embodiment, combined with Figure 6 and Figure 7 As shown, the height position of the second support rod 4 is changed by sliding the second support rod 4 up and down in the guide groove 221 .

[0047] Optionally, the dust collection box 2 further includes an exhaust pipe 23, one end of the exhaust pipe 23 is connected to the inner cavity of the dust collection box 2, and the other end of the exhaust pipe 23 is used for connecting to an external dust processing device.

[0048] In this optional embodiment, combined with Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the dust handling equipment continuously exhausts the inner cavity of the dust collection box 2 through the exhaust pipe 23, so that the inner cavity of the dust collection box 2 forms a negative pressure, thereby absorbing the dust generated near the cutting seam during the cutting process, thereby realizing dust-free cutting.

[0049] Optionally, the laser cutting device also includes a blowing mechanism 9, which includes a push-pull rod 91, an air cylinder 92, a piston 93 and a blowing pipe 94. One end of the push-pull rod 91 is connected to the second support rod 4, and the other end of the push-pull rod 91 is vertically arranged downward and connected to the piston 93. The piston 93 is slidably arranged in the air cylinder 92. One end of the blowing pipe 94 is connected to the lower part of the inner cavity of the air cylinder 92, and the other end of the blowing pipe 94 is facing above the opening of the cutting seam.

[0050] In this optional embodiment, combined with Fig. 9 and Fig.10 As shown, the piston 93 is a circular structure and is slidably connected to the inner wall of the gas storage cylinder 92. Fig. 9As shown, at this time, the second support rod 4 is in the first position, and the second support rod 4 and the first support rod 3 are at the same height, so that the upper surface of the feed side support plate 81 is flush with the upper surface of the discharge side support plate 82, and the copper foil has been cut once, the strip copper foil on the upper surface of the discharge side support plate 82 has been taken away, and the cut side of the copper foil is located above the cutting seam; when cutting again, it is necessary to convey the cut side of the copper foil to the upper surface of the discharge side support plate 82, so that the copper foil is laid flat on the upper surface of the feed side support plate 81 and the discharge side support plate 82, and in the process of the cut side of the copper foil moving to the upper surface of the discharge side support plate 82, as shown in FIG. Fig.10 As shown, at this time, since the second support rod 4 has just begun to descend, the height difference between the discharge side support plate 82 and the feed side support plate 81 is very small, and the cut side of the copper foil is still at risk of getting stuck in the cutting seam. The push-pull rod 91 is driven downward by the second support rod 4, thereby driving the piston 93 downward, and then the air in the air storage cylinder 92 is pressed into the air blowing pipe 94, so that the air blowing pipe 94 blows airflow to the lower surface of the cut side of the copper foil, and the airflow forms a lifting force on the lower surface of the cut side of the copper foil. In this way, the cut side of the copper foil is further prevented from getting stuck in the cutting seam.

[0051] Furthermore, the laser cutting device further includes an exhaust mechanism 7 , which is connected to the first cavity 32 and the second cavity 42 to exhaust the gas in the first cavity 32 and the second cavity 42 .

[0052] In this optional embodiment, combined with Figure 2 As shown, the vacuum mechanism 7 can be composed of an air suction pipe and an air suction pump, the air suction end of the air suction pump is connected to one end of the air suction pipe, and the other end of the air suction pipe is connected to the first cavity 32 and the second cavity 42 respectively. When the copper foil is laid flat on the upper surface of the feed side support plate 81 and the discharge side support plate 82, the first cavity 32 and the second cavity 42 are evacuated by the air suction pump and the air suction pipe, so that the first cavity 32 and the second cavity 42 form a negative pressure, so that the lower surface of the copper foil can be adsorbed through the first suction hole 31, the first perforation 811 and the second suction hole 41, the second perforation 821, thereby improving the stability of the copper foil during cutting.

[0053] Optionally, the first driving mechanism 5 includes an X-axis driving module 51 and a Z-axis driving module 52, the laser head 1 is connected to the Z-axis driving module 52, the Z-axis driving module 52 is used to drive the laser head 1 to move in the vertical direction, and the Z-axis driving module 52 is connected to the X-axis driving module 51, and the X-axis driving module 51 is used to drive the Z-axis driving module 52 to move in the horizontal direction.

[0054] In this optional embodiment, combined with Figure 1 , Figure 4 and Figure 8As shown, the X-axis driving module 51 is mainly responsible for driving the Z-axis driving module 52 (and the laser head 1 connected thereto) to move in the horizontal direction (i.e., the X-axis direction). The X-axis driving module 51 can be composed of a motor, a transmission device (such as a belt, a gear, a ball screw, etc.), a guide rail, a slider and other components. The motor provides power, the transmission device converts the rotational motion of the motor into linear motion, and the guide rail and the slider ensure the smoothness and accuracy of the motion. Through the precise motor drive and transmission device, the X-axis driving module 51 can realize the precise positioning and movement of the laser head 1 on the horizontal plane, thereby And ensure that the laser beam can accurately irradiate the predetermined position on the copper foil; the Z-axis driving module 52 is mainly responsible for driving the laser head 1 to move in the vertical direction (i.e., the Z-axis direction), and by adjusting the height position of the laser head 1, the laser head 1 reaches the preset cutting height. The Z-axis driving module 52 is also composed of a motor, a transmission device (such as a ball screw, etc.), a guide rail, a slider and other components, and the Z-axis driving module 52 is similar to the X-axis driving module 51, and is powered by a motor. The transmission device converts rotational motion into linear motion, and the guide rail and the slider ensure the smoothness and accuracy of the motion.

[0055] The embodiment of the present invention further provides a cutting method of a laser cutting device, based on the above laser cutting device, comprising the following steps:

[0056] S1: conveying the copper foil from the upper surface of the first supporting rod 3 to the upper surface of the second supporting rod 4, and gradually switching the second supporting rod 4 from the first position to the second position;

[0057] S2: When the copper foil passes through the cutting slit, the second support rod 4 gradually switches from the second position to the first position, so that the copper foil is laid flat on the upper surfaces of the first support rod 3 and the second support rod 4;

[0058] S3: Control the laser head 1 to move in the vertical direction through the first driving mechanism 5 to reach a preset height, and then control the laser head 1 to move in the horizontal direction through the first driving mechanism 5 to cut the copper foil.

[0059] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A laser cutting device, characterized in that: include: Laser head (1); A dust collection box (2), wherein the top of the dust collection box (2) is open; A first supporting rod (3), the first supporting rod (3) being connected to one side of the opening along an extension direction of the dust collecting box (2); a second supporting rod (4), the second supporting rod (4) being connected to the other side of the opening along the extension direction of the dust collecting box (2), and a cutting seam being formed between the second supporting rod (4) and the first supporting rod (3), the second supporting rod (4) being capable of switching between a first position and a second position, and when the second supporting rod (4) is in the first position, the upper surface of the second supporting rod (4) is flush with the upper surface of the first supporting rod (3), and when the second supporting rod (4) is in the second position, the upper surface of the second supporting rod (4) is lower than the upper surface of the first supporting rod (3); and A first driving mechanism (5), the first driving mechanism (5) is drivingly connected to the laser head (1) to drive the laser head (1) to move in a horizontal direction and a vertical direction.

2. The laser cutting device according to claim 1, characterized in that: A first cavity (32) is provided in the first supporting rod (3), and a plurality of first suction holes (31) communicating with the first cavity (32) are provided on an upper surface of the first supporting rod (3); a second cavity (42) is provided in the second supporting rod (4), and a plurality of second suction holes (41) communicating with the second cavity (42) are provided on an upper surface of the second supporting rod (4); the first cavity (32) and the second cavity (42) are both capable of forming a negative pressure state.

3. The laser cutting device according to claim 1, characterized in that: It also comprises a second driving mechanism (6), the second driving mechanism (6) being drivingly connected to the second supporting rod (4) so ​​as to drive the second supporting rod (4) to move vertically, so that the second supporting rod (4) switches between the first position and the second position.

4. The laser cutting device according to claim 2, characterized in that: The invention also comprises a supporting plate (8), wherein the supporting plate (8) comprises a feed side supporting plate (81) and a discharge side supporting plate (82), wherein the feed side supporting plate (81) is connected to the upper surface of the first supporting rod (3), and the feed side supporting plate (81) is provided with a first through hole (811) communicating with the first suction hole (31), and the discharge side supporting plate (82) is connected to the upper surface of the second supporting rod (4), and the discharge side supporting plate (82) is provided with a second through hole (821) communicating with the second suction hole (41), and when the second supporting rod (4) is in the first position, the upper surface of the feed side supporting plate (81) is flush with the upper surface of the discharge side supporting plate (82), and the cutting seam is formed between the feed side supporting plate (81) and the discharge side supporting plate (82), and when the second supporting rod (4) is in the second position, the upper surface of the discharge side supporting plate (82) is lower than the upper surface of the feed side supporting plate (81).

5. The laser cutting device according to claim 4, characterized in that: The dust collection box (2) comprises an opening groove (21), a mounting plate (22) and a guide groove (221); the opening groove (21) is arranged on an open side of the top of the dust collection box (2); when the second support rod (4) is in the second position, the discharge side support plate (82) overlaps the opening groove (21); the two mounting plates (22) are symmetrically connected to two sides of the interior of the dust collection box (2); the two ends of the first support rod (3) are respectively connected to one side of the top of the two mounting plates (22); the guide groove (221) is arranged on the other side of the top of the mounting plate (22); and the two ends of the second support rod (4) are slidably arranged in the guide grooves (221) on the top of the two mounting plates (22).

6. The laser cutting device according to claim 1, characterized in that: The dust collection box (2) further comprises an air extraction pipe (23), one end of the air extraction pipe (23) being in communication with the inner cavity of the dust collection box (2), and the other end of the air extraction pipe (23) being used for connecting to an external dust treatment device.

7. The laser cutting device according to claim 1, characterized in that: The invention also comprises an air blowing mechanism (9), wherein the air blowing mechanism (9) comprises a push-pull rod (91), an air storage cylinder (92), a piston (93) and an air blowing pipe (94), wherein one end of the push-pull rod (91) is connected to the second supporting rod (4), the other end of the push-pull rod (91) is vertically arranged downward and connected to the piston (93), the piston (93) is slidably arranged in the air storage cylinder (92), one end of the air blowing pipe (94) is connected to the lower part of the inner cavity of the air storage cylinder (92), and the other end of the air blowing pipe (94) faces the upper part of the opening of the cutting seam.

8. The laser cutting device according to claim 2, characterized in that: It also comprises an air extraction mechanism (7), wherein the air extraction mechanism (7) is in communication with the first cavity (32) and the second cavity (42) so as to extract gas from the first cavity (32) and the second cavity (42).

9. The laser cutting device according to claim 1, characterized in that: The first driving mechanism (5) comprises an X-axis driving module (51) and a Z-axis driving module (52); the laser head (1) is connected to the Z-axis driving module (52); the Z-axis driving module (52) is used to drive the laser head (1) to move in a vertical direction; the Z-axis driving module (52) is connected to the X-axis driving module (51); the X-axis driving module (51) is used to drive the Z-axis driving module (52) to move in a horizontal direction.

10. A cutting method using a laser cutting device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: conveying the copper foil from the upper surface of the first supporting rod (3) to the upper surface of the second supporting rod (4), and gradually switching the second supporting rod (4) from the first position to the second position; S2: when the copper foil passes through the cutting slit, the second support rod (4) gradually switches from the second position to the first position, so that the copper foil is laid flat on the upper surfaces of the first support rod (3) and the second support rod (4); S3: controlling the laser head (1) to move in a vertical direction through the first driving mechanism (5) so that it reaches a preset height, and then controlling the laser head (1) to move in a horizontal direction through the first driving mechanism (5) to cut the copper foil.

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