Preheating type cutting device and cutting method

Abstract

The invention provides a preheating type cutting device and a cutting method, and relates to the technical field of cutting. The preheating type cutting device comprises a cutting mechanism and a preheating mechanism, wherein the cutting mechanism is used for moving along a linear cutting path; the first laser reflector is connected to one side of the cutting mechanism; the second laser reflector is connected to the other side of the cutting mechanism; the laser generator is used for emitting a laser beam in the direction of the linear cutting path; wherein, when the cutting mechanism moves along a first cutting direction of the linear cutting path, the laser beam is emitted into the first laser reflector, and when the cutting mechanism moves along a second cutting direction of the linear cutting path, the laser beam is emitted into the second laser reflector. The first laser reflector and the second laser reflector are ingeniously designed on the cutting mechanism, so that the cutting efficiency and the cutting quality are greatly improved, and meanwhile, the complexity and the cost of a production line are greatly reduced.

Description

Technical Field

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

[0002] In the existing cutting process, especially in the field of laser cutting, cutting efficiency and cutting quality have always been the focus of the industry. When performing linear cutting, traditional laser cutting equipment often directly irradiates the workpiece with laser to achieve cutting. However, this direct cutting method often has problems such as low cutting efficiency and unstable incision quality in the initial cutting stage, especially when cutting thicker or harder workpieces, it is easy to have incomplete cutting or uneven incision.

[0003] In order to improve cutting efficiency and cutting quality, the industry has tried to preheat the workpiece before cutting to soften the material, increase cutting speed and improve cut quality. However, the existing preheating methods are mostly completed by separate preheating equipment, which increases the complexity and cost of the production line, and the cutting efficiency is also poor. Summary of the invention

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

[0005] In a first aspect, the present invention provides a preheating cutting device, comprising: A cutting mechanism, the cutting mechanism being configured to move along a linear cutting path; a first laser reflector, the first laser reflector being connected to one side of the cutting mechanism; A second laser reflector connected to the other side of the cutting mechanism; and A laser generator, the laser generator is used to emit a laser beam along the direction of the linear cutting path; Wherein, when the cutting mechanism moves along the first cutting direction of the linear cutting path, the first laser reflector is in front, the second laser reflector is in the back, and the second laser reflector is staggered relative to the first laser reflector so that the laser beam enters the first laser reflector; when the cutting mechanism moves along the second cutting direction of the linear cutting path, the second laser reflector is in front, the first laser reflector is in the back, and the second laser reflector blocks the first laser reflector so that the laser beam enters the second laser reflector.

[0006] Optionally, the first laser reflector includes a first light inlet tube arranged horizontally and a first light outlet tube arranged vertically, a reflective lens is provided in the first light outlet tube, one end of the first light inlet tube faces the laser generator, the other end of the first light inlet tube is connected with one end of the first light outlet tube, and the other end of the first light outlet tube is arranged downward, and the second laser reflector includes a second light inlet tube arranged horizontally and a second light outlet tube arranged vertically, a reflective lens is provided in the second light outlet tube, one end of the second light inlet tube faces the laser generator, the other end of the second light inlet tube is connected with one end of the second light outlet tube, and the other end of the second light outlet tube is arranged downward.

[0007] Optionally, the cutting mechanism includes a first mounting seat, a first lifting mechanism, a fixed wheel knife, a moving wheel knife, a second mounting seat and a first driving assembly, the first lifting mechanism is connected to the first mounting seat, the first lifting mechanism is connected to the fixed wheel knife drivingly to drive the fixed wheel knife to move vertically, the moving wheel knife is arranged directly below the fixed wheel knife, the moving wheel knife and the first driving assembly are both arranged on the second mounting seat, the first driving assembly is connected to the moving wheel knife drivingly to drive the moving wheel knife to rotate, and the first mounting seat and the second mounting seat can move synchronously.

[0008] Optionally, the preheating cutting device further comprises a carrying plate, wherein the carrying plate comprises a feed side carrying plate and a discharge side carrying plate, a cutting seam is formed between the feed side carrying plate and the discharge side carrying plate, and the fixed wheel knife is used to extend into the cutting seam.

[0009] Optionally, the edge portion of the discharge side carrier plate close to the cutting seam is formed to extend downwardly to form a sloped portion.

[0010] Optionally, the preheating cutting device further comprises a conveyor belt, and the conveyor belt is arranged close to one side of the discharge side carrier plate.

[0011] Optionally, the preheating cutting device also includes a driving mechanism, which includes a first screw shaft, a second screw shaft, a second drive assembly and a transmission assembly. The transmission assembly is drivingly connected to the first screw shaft to drive the first screw shaft to rotate. The first screw shaft is threadedly connected to the first mounting seat. The first screw shaft drives the second screw shaft to rotate synchronously through the transmission assembly. The second screw shaft is threadedly connected to the second mounting seat.

[0012] Optionally, the preheating cutting device further comprises a clamping mechanism, wherein the two clamping mechanisms are respectively arranged on the feed side carrier plate and the discharge side carrier plate, and the clamping mechanism is used to clamp the workpiece to be cut laid on the carrier plate.

[0013] Optionally, the clamping mechanism includes a pressing assembly, a limiting rod and a rubber strip. The pressing assembly is drivingly connected to the limiting rod to drive the limiting rod to move vertically. An open groove is provided on the bottom surface of the limiting rod. The rubber strip is connected to the open groove, and at least part of the rubber strip extends out of the open groove.

[0014] The beneficial effect of the preheating cutting device of the embodiment of the present invention is as follows: when the cutting mechanism moves in the first cutting direction along the linear cutting path, the first laser reflector is in front and the second laser reflector is in the back. By staggering the second laser reflector relative to the first laser reflector, the second laser reflector can avoid the laser beam emitted by the laser generator, so that the laser beam is incident on the first laser reflector in front, so that the first laser reflector can first perform laser irradiation on the workpiece, thereby achieving the preheating effect before the cutting mechanism is cut. After the first cutting is completed, the cutting mechanism immediately moves along the second cutting direction of the linear cutting path, and the second laser reflector blocks the first laser reflector, so that the laser beam is incident on the second laser reflector in front, so that the second laser reflector can first perform laser irradiation on the workpiece, thereby also achieving the preheating effect before the cutting mechanism is cut. The second cutting is completed, and the above operation is repeated to achieve continuous preheating cutting operation. In summary, by cleverly designing the first laser reflector and the second laser reflector on the cutting mechanism, the cutting efficiency and cutting quality are greatly improved, and the complexity and cost of the production line are greatly reduced.

[0015] In a second aspect, an embodiment of the present invention further provides a cutting method of a preheating cutting device, comprising the following steps: S1: Turn on the laser generator; S2: adjusting the second laser reflector to a position offset from the first laser reflector so that the laser beam is incident on the first laser reflector; S3: The cutting mechanism moves along the first cutting direction of the linear cutting path, the first laser reflector preheats the workpiece, and the cutting mechanism cuts the workpiece to complete the first cutting; S4: After the first cutting is completed, the second laser reflector is adjusted to a position at the same plane and height as the first laser reflector; S5: the cutting mechanism moves along the second cutting direction of the linear cutting path, the second laser reflector preheats the workpiece first, and then the cutting mechanism cuts the workpiece to complete the second cutting; S6: Repeat steps S2 to S5. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preheating cutting device according to an embodiment of the present invention; Figure 2It is a structural schematic diagram of the preheating cutting device of another perspective of an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of part of the preheating cutting device according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of the preheating cutting device of another perspective of the embodiment of the present invention; Figure 5 for Figure 4 A magnified view of the structure at A; Figure 6 Schematic diagram of the positions of the first laser reflector and the second laser reflector in the preheating cutting device according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the position of the cutting mechanism in the preheating cutting device according to an embodiment of the present invention when it is about to move along the first cutting direction; Figure 8 It is a schematic diagram of the position of the cutting mechanism in the preheating cutting device according to an embodiment of the present invention when it is about to move along the second cutting direction.

[0017] Explanation of the reference numerals in the accompanying drawings: 1. Cutting mechanism; 11. First mounting seat; 12. First lifting mechanism; 13. Fixed wheel cutter; 14. Moving wheel cutter; 15. Second mounting seat; 16. First driving assembly; 2. First laser reflector; 21. First light inlet tube; 22. First light outlet tube; 3. Second laser reflector; 31. Second light inlet tube; 32. Second light outlet tube; 4. Laser generator; 5. Second lifting mechanism; 6. Driving mechanism; 61. First screw shaft; 62. Second screw shaft; 63. Second driving assembly; 64. Transmission assembly; 7. Conveyor belt; 8. Clamping mechanism; 81. Pressing assembly; 82. Limiting rod; 83. Rubber strip; 9. Carrying plate; 91. Carrying plate on the feeding side; 92. Carrying plate on the discharging side. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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 position, and the positive direction of the X axis represents the right side, and the negative direction of the X axis represents the left side; the Y axis in the accompanying drawings represents the front and back position, 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.

[0023] An embodiment of the present invention provides a preheating cutting device, comprising: A cutting mechanism 1, the cutting mechanism 1 is used to move along a linear cutting path; A first laser reflector 2, the first laser reflector 2 is connected to one side of the cutting mechanism 1; A second laser reflector 3 connected to the other side of the cutting mechanism 1; and A laser generator 4, the laser generator 4 is used to emit a laser beam along a straight cutting path; Among them, when the cutting mechanism 1 moves along the first cutting direction of the linear cutting path, the first laser reflector 2 is in front, the second laser reflector 3 is in the back, and the second laser reflector 3 is staggered relative to the first laser reflector 2 so that the laser beam enters the first laser reflector 2; when the cutting mechanism 1 moves along the second cutting direction of the linear cutting path, the second laser reflector 3 is in front, the first laser reflector 2 is in the back, and the second laser reflector 3 blocks the first laser reflector 2 so that the laser beam enters the second laser reflector 3.

[0024] Specifically, combined Figure 1 , Figure 6, Figure 7 and Figure 8 As shown, the laser generator 4 can be a carbon dioxide laser, which has the advantages of high energy conversion efficiency and good beam quality. The linear cutting path is a path in the X-axis direction. The first cutting direction is along the negative direction of the X-axis, and the second cutting direction is along the positive direction of the X-axis. The second laser reflector 3 is staggered relative to the first laser reflector 2. The second laser reflector 3 can be staggered up and down (along the Z-axis direction), front and back (along the Y-axis direction), or tilted relative to the first laser reflector 2.

[0025] In this optional embodiment, when the cutting mechanism 1 moves in the first cutting direction along the linear cutting path, the first laser reflector 2 is in front and the second laser reflector 3 is in the back. By staggering the second laser reflector 3 relative to the first laser reflector 2, the second laser reflector 3 can avoid the laser beam emitted by the laser generator 4, so that the laser beam enters the first laser reflector 2 in front, so that the first laser reflector 2 can first perform laser irradiation on the workpiece, thereby achieving the preheating effect of the cutting mechanism 1 before cutting. After completing the first cutting, the cutting mechanism 1 immediately moves along the second cutting direction of the linear cutting path, and the second laser reflector 3 blocks the first laser reflector 2, so that the laser beam enters the second laser reflector 3 in front, so that the second laser reflector 3 can first perform laser irradiation on the workpiece, thereby also achieving the preheating effect of the cutting mechanism 1 before cutting. The second cutting is completed, and the above operation is repeated to achieve continuous preheating cutting operations. In summary, by cleverly designing the first laser reflector 2 and the second laser reflector 3 on the cutting mechanism 1, the cutting efficiency and cutting quality are greatly improved, and the complexity and cost of the production line are greatly reduced.

[0026] It should be noted that laser preheating can not only cut metal sheets, but also cut PP sheets, PC (polycarbonate), PVC (polyvinyl chloride) and other materials. Through laser preheating, the PP sheet can be heated to a semi-gelled state before cutting, so that there is no dust during cutting, which improves the cutting quality of the PP sheet.

[0027] Optionally, the first laser reflector 2 includes a horizontally arranged first light inlet tube 21 and a vertically arranged first light outlet tube 22, a reflective lens is provided in the first light outlet tube 22, one end of the first light inlet tube 21 faces the laser generator 4, the other end of the first light inlet tube 21 is connected with one end of the first light outlet tube 22, and the other end of the first light outlet tube 22 is arranged downward, and the second laser reflector 3 includes a horizontally arranged second light inlet tube 31 and a vertically arranged second light outlet tube 32, a reflective lens is provided in the second light outlet tube 32, one end of the second light inlet tube 31 faces the laser generator 4, the other end of the second light inlet tube 31 is connected with one end of the second light outlet tube 32, and the other end of the second light outlet tube 32 is arranged downward.

[0028] In this optional embodiment, combined with Figure 1 , Figure 2 and Figure 3 As shown, the first laser reflector 2 and the second laser reflector 3 have the same structure. The laser beam enters the first light input tube 21 or the second light input tube 31, and after being reflected by the reflective lens in the first light input tube 21 or the second light input tube 31, it is emitted to the surface of the workpiece from the first light output tube 22 or the second light output tube 32.

[0029] A lens may also be disposed in the first light emitting tube 22, and a reflective lens may be used in conjunction with the lens to focus or collimate the laser beam to increase the energy density of the beam or maintain the parallelism of the beam.

[0030] Furthermore, the preheating cutting device also includes a second lifting mechanism 5, the cutting mechanism 1 includes a first mounting seat 11, a first lifting mechanism 12, a fixed wheel knife 13, a moving wheel knife 14, a second mounting seat 15 and a first driving assembly 16, the second lifting mechanism 5 is connected to the first mounting seat 11, the second lifting mechanism 5 is drivingly connected to the second laser reflector 3 to drive the second laser reflector 3 to move vertically, the first lifting mechanism 12 is connected to the first mounting seat 11, the first lifting mechanism 12 is drivingly connected to the fixed wheel knife 13 to drive the fixed wheel knife 13 to move vertically, the moving wheel knife 14 is arranged directly below the fixed wheel knife 13, the moving wheel knife 14 and the first driving assembly 16 are both arranged on the second mounting seat 15, the first driving assembly 16 is drivingly connected to the moving wheel knife 14 to drive the moving wheel knife 14 to rotate, and the first mounting seat 11 and the second mounting seat 15 can move synchronously.

[0031] In this optional embodiment, combined with Figure 3 As shown, the second lifting mechanism 5 can be a linear driving device such as a cylinder and an electric push rod. For example, when the second lifting mechanism 5 is a cylinder, the cylinder is fixedly mounted on the first mounting seat 11, and the output end of the cylinder is vertically arranged upward and connected to the second laser reflector 3 through a bracket. The height position of the second light inlet tube 31 of the second laser reflector 3 is adjusted by the cylinder, so that the second light inlet tube 31 can avoid the first light inlet tube 21. Similarly, the first lifting mechanism 12 can also be a linear driving device such as a cylinder and an electric push rod, so as to adjust the height position of the fixed wheel knife 13 to facilitate cutting of the workpiece. The first driving component 16 can be a combination of a chain and a sprocket or a combination of a pulley and a belt. The first driving component 16 is used to realize the synchronous movement of the first mounting seat 11 and the second mounting seat 15, so as to realize cutting of the workpiece.

[0032] Optionally, the preheating cutting device further comprises a carrier plate 9, the carrier plate 9 comprises a feed side carrier plate 91 and a discharge side carrier plate 92, a cutting seam is formed between the feed side carrier plate 91 and the discharge side carrier plate 92, and the fixed wheel knife 13 is used to extend into the cutting seam.

[0033] Furthermore, the edge portion of the discharge side carrier plate 92 close to the cutting seam is formed to extend downwardly to form a sloped portion.

[0034] In this optional embodiment, combined with Figure 5 As shown, when cutting workpieces with certain flexibility such as PP sheets, copper foils, metal films, and metal sheets, it is necessary to form an inclined surface on the side of the discharge side carrier plate 92 close to the cutting seam. For example, when cutting the PP sheet into long strips, firstly put the PP sheet roll on the feeding device, and control the feeding device to send the head end of the PP sheet from the upper surface of the feed side carrier plate 91 to the upper surface of the discharge side carrier plate 92. At this time, the PP sheet is laid on the upper surfaces of the feed side carrier plate 91 and the discharge side carrier plate 92, and the fixed wheel knife 13 and the moving wheel knife 14 cut the PP sheet through the cutting seam. After cutting, the PP sheet is in the shape of a long strip. The PP sheet remains on the upper surface of the discharge side carrier plate 92. After it is taken out, the feeding equipment is controlled to continue to feed the head end of the PP sheet from the upper surface of the feed side carrier plate 91 to the upper surface of the discharge side carrier plate 92. When the head end of the PP sheet passes through the cutting seam, due to its own flexibility, its own gravity will cause the head end of the PP sheet to slightly droop below the cutting seam. Thanks to the design of the inclined portion, when the head end of the PP sheet passes through the cutting seam, the slightly drooping head end of the PP sheet can be guided to the upper surface of the discharge side carrier plate 92, thereby avoiding the head end of the PP sheet from being stuck in the cutting seam, thereby improving the efficiency of continuous cutting.

[0035] Optionally, the preheating cutting device further comprises a conveyor belt 7 , and the conveyor belt 7 is arranged close to one side of the discharge side carrier plate 92 .

[0036] In this optional embodiment, combined with Figure 2 As shown, the conveyor belt 7 is installed on the frame, and the conveyor belt 7 can be used to transport the cut part of the workpiece to facilitate continuous cutting.

[0037] Furthermore, the preheating cutting device also includes a driving mechanism 6, which includes a first screw shaft 61, a second screw shaft 62, a second drive assembly 63 and a transmission assembly 64. The transmission assembly 64 is drivingly connected to the first screw shaft 61 to drive the first screw shaft 61 to rotate. The first screw shaft 61 is threadedly connected to the first mounting seat 11. The first screw shaft 61 drives the second screw shaft 62 to rotate synchronously through the transmission assembly 64. The second screw shaft 62 is threadedly connected to the second mounting seat 15.

[0038] Specifically, combined Figure 1 , Figure 2 and Figure 6As shown, the second drive component 63 can be composed of a motor, a driving pulley and a first driven pulley, and the transmission component 64 can be composed of a second driven pulley and a third driven pulley. The motor is fixedly mounted on the frame, and the output shaft of the motor is connected to the driving pulley through a coupling, and the driving pulley is connected to the first driven pulley through a belt. The first driven pulley is fixedly sleeved on one end of the first screw shaft 61, and the first screw shaft 61 is rotatably connected to the frame through a bearing, and the second driven pulley is fixedly sleeved on the other end of the first screw shaft 61, and the second driven pulley is connected to the third driven pulley through a belt, and the third driven pulley is fixedly sleeved on the end of the second screw shaft 62, and the second screw shaft 62 is rotatably connected to the frame through a bearing.

[0039] In this optional embodiment, the first screw shaft 61 is driven to rotate by the second driving assembly 63, and the rotation of the first screw shaft 61 drives the second screw shaft 62 to rotate synchronously through the transmission assembly 64, thereby realizing the synchronous movement of the first mounting seat 11 and the second mounting seat 15, and then enabling the fixed wheel cutter 13 and the movable wheel cutter 14 to move synchronously to facilitate cutting of the workpiece.

[0040] Furthermore, the preheating cutting device also includes a clamping mechanism 8, and the two clamping mechanisms 8 are respectively arranged on the feed side carrier plate 91 and the discharge side carrier plate 92. The clamping mechanism 8 is used to clamp the workpiece to be cut laid on the carrier plate 9. The clamping mechanism 8 includes a pressing component 81, a limiting rod 82 and a rubber strip 83. The pressing component 81 is drivingly connected to the limiting rod 82 to drive the limiting rod 82 to move vertically. An open groove is provided on the bottom surface of the limiting rod 82, and the rubber strip 83 is connected to the open groove, and at least part of the rubber strip 83 extends out of the open groove.

[0041] In this optional embodiment, combined with Figure 1 , Figure 2 and Figure 4 As shown, the pressing component 81 can be a linear driving device such as a cylinder or an electric push rod. The pressing component 81 drives the limiting rod 82 to move vertically, thereby adjusting the vertical height of the rubber strip 83. In addition, since at least part of the rubber strip 83 extends out of the open groove, in other words, the bottom surface of the rubber strip 83 can be pressed against the upper surface of the workpiece, thereby improving the stability of the workpiece during the cutting process and improving the cutting quality.

[0042] Specifically, combined Figure 4 and Figure 5As shown, the down-pressing assembly 81 may include a cylinder and a lifting rod. Since the feed side carrier plate 91 and the discharge side carrier plate 92 are relatively long, a plurality of cylinders are respectively provided on the frames at the feed side carrier plate 91 and the discharge side carrier plate 92. The cylinder is fixedly mounted on the frame, and the output end of the cylinder is vertically downwardly arranged and connected to the upper surface of the lifting rod. The lower surface of the lifting rod is connected to the upper surface of the limit rod 82. The lower surface of the limit rod 82 may be provided with an open groove by an integrated molding method, and the rubber strip 83 may be bonded in the open groove.

[0043] In this optional embodiment, the limit rod 82 is driven to move vertically, that is, along the Z-axis direction, by the pressing component 81, thereby driving the rubber strip 83 to move vertically synchronously, so that the rubber strip 83 moves vertically downward, and the rubber strip 83 can be pressed against the surface of the workpiece, thereby improving the stability of the workpiece during cutting. After the cutting is completed, the rubber strip 83 is moved vertically upward, and the rubber strip 83 can leave the surface of the workpiece, thereby facilitating the discharge of the part after the cutting of the workpiece.

[0044] The embodiment of the present invention further provides a cutting method, based on the above preheating cutting device, comprising the following steps: S1: Turn on the laser generator 4; S2: adjusting the second laser reflector 3 to a position offset from the first laser reflector 2 so that the laser beam enters the first laser reflector 2; S3: the cutting mechanism 1 moves along the first cutting direction of the linear cutting path, the first laser reflector 2 preheats the workpiece first, and then the cutting mechanism 1 cuts the workpiece, completing the first cutting; S4: After the first cutting is completed, the second laser reflector 3 is adjusted to a position at the same plane and height as the first laser reflector 2; S5: the cutting mechanism 1 moves along the second cutting direction of the linear cutting path, the second laser reflector 3 preheats the workpiece first, and then the cutting mechanism 1 cuts the workpiece to complete the second cutting; S6: Repeat steps S2 to S5.

[0045] 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 preheating cutting device, characterized in that: include: A cutting mechanism (1), the cutting mechanism (1) being used to move along a linear cutting path; A first laser reflector (2), the first laser reflector (2) being connected to one side of the cutting mechanism (1); a second laser reflector (3), the second laser reflector (3) being connected to the other side of the cutting mechanism (1); and A laser generator (4), the laser generator (4) being used to emit a laser beam along the direction of the linear cutting path; When the cutting mechanism (1) moves along a first cutting direction of the linear cutting path, the first laser reflector (2) is in front, the second laser reflector (3) is in the back, and the second laser reflector (3) is staggered relative to the first laser reflector (2), so that the laser beam enters the first laser reflector (2); when the cutting mechanism (1) moves along a second cutting direction of the linear cutting path, the second laser reflector (3) is in front, the first laser reflector (2) is in the back, and the second laser reflector (3) blocks the first laser reflector (2), so that the laser beam enters the second laser reflector (3).

2. The preheating cutting device according to claim 1, characterized in that: The first laser reflector (2) comprises a first light inlet tube (21) arranged horizontally and a first light outlet tube (22) arranged vertically, a reflective lens is arranged in the first light outlet tube (22), one end of the first light inlet tube (21) faces the laser generator (4), the other end of the first light inlet tube (21) is connected with one end of the first light outlet tube (22), and the other end of the first light outlet tube (22) is arranged downwardly, and the second laser reflector (3) comprises a second light inlet tube (31) arranged horizontally and a second light outlet tube (32) arranged vertically, a reflective lens is arranged in the second light outlet tube (32), one end of the second light inlet tube (31) faces the laser generator (4), the other end of the second light inlet tube (31) is connected with one end of the second light outlet tube (32), and the other end of the second light outlet tube (32) is arranged downwardly.

3. The preheating cutting device according to claim 1, characterized in that: The cutting mechanism (1) comprises a first mounting seat (11), a first lifting mechanism (12), a fixed wheel blade (13), a moving wheel blade (14), a second mounting seat (15) and a first driving assembly (16); the first lifting mechanism (12) is connected to the first mounting seat (11); the first lifting mechanism (12) is drivingly connected to the fixed wheel blade (13) so as to drive the fixed wheel blade (13) to move vertically; the moving wheel blade (14) is arranged directly below the fixed wheel blade (13); the moving wheel blade (14) and the first driving assembly (16) are both arranged on the second mounting seat (15); the first driving assembly (16) is drivingly connected to the moving wheel blade (14) so ​​as to drive the moving wheel blade (14) to rotate; and the first mounting seat (11) and the second mounting seat (15) can move synchronously.

4. The preheating cutting device according to claim 3, characterized in that: It also comprises a carrying plate (9), the carrying plate (9) comprising a feed side carrying plate (91) and a discharge side carrying plate (92), a cutting slit being formed between the feed side carrying plate (91) and the discharge side carrying plate (92), and the fixed wheel knife (13) being used to extend into the cutting slit.

5. The preheating cutting device according to claim 4, characterized in that: The edge portion of the discharge side carrier plate (92) close to the cutting seam is formed to extend downwardly in an inclined manner to form a sloped portion.

6. The preheating cutting device according to claim 4, characterized in that: It also includes a conveyor belt (7), wherein the conveyor belt (7) is arranged close to one side of the discharge side carrier plate (92).

7. The preheating cutting device according to claim 3, characterized in that: The invention also comprises a driving mechanism (6), wherein the driving mechanism (6) comprises a first screw shaft (61), a second screw shaft (62), a second driving assembly (63) and a transmission assembly (64); the transmission assembly (64) is drivingly connected to the first screw shaft (61) to drive the first screw shaft (61) to rotate; the first screw shaft (61) is threadedly connected to the first mounting seat (11); the first screw shaft (61) drives the second screw shaft (62) to rotate synchronously through the transmission assembly (64); and the second screw shaft (62) is threadedly connected to the second mounting seat (15).

8. The preheating cutting device according to claim 4, characterized in that: It also comprises a clamping mechanism (8), wherein two clamping mechanisms (8) are respectively arranged on the feed side carrier plate (91) and the discharge side carrier plate (92), and the clamping mechanism (8) is used to clamp the workpiece to be cut laid on the carrier plate (9).

9. The preheating cutting device according to claim 8, characterized in that: The clamping mechanism (8) comprises a pressing assembly (81), a limiting rod (82) and a rubber strip (83); the pressing assembly (81) is drivingly connected to the limiting rod (82) to drive the limiting rod (82) to move vertically; an open groove is provided on the bottom surface of the limiting rod (82); the rubber strip (83) is connected to the open groove, and at least a portion of the rubber strip (83) extends out of the open groove.

10. A cutting method using a preheating cutting device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Turn on the laser generator (4); S2: adjusting the second laser reflector (3) to a position offset from the first laser reflector (2) so that the laser beam is emitted into the first laser reflector (2); S3: the cutting mechanism (1) moves along a first cutting direction of the linear cutting path, the first laser reflector (2) preheats the workpiece, and the cutting mechanism (1) then cuts the workpiece, completing the first cutting; S4: After the first cutting is completed, the second laser reflector (3) is adjusted to a position on the same plane and at the same height as the first laser reflector (2); S5: the cutting mechanism (1) moves along the second cutting direction of the linear cutting path, the second laser reflector (3) preheats the workpiece first, and then the cutting mechanism (1) cuts the workpiece, completing the second cutting; S6: Repeat steps S2 to S5.

Images