Laser die-cutting machine capable of cutting elastic film

Abstract

The invention discloses a laser die-cutting machine capable of cutting an elastic film, and relates to the field of laser die-cutting machines, the laser die-cutting machine comprises a case, a first moving table capable of transversely and vertically moving and a second moving table capable of longitudinally moving are arranged in the case, a mounting frame is fixed on the first moving table, and a laser cutting head is arranged at the bottom end of the mounting frame; a fixing base coaxial with the laser cutting head is arranged at the bottom end of the mounting frame, and the bottom end of the fixing base is connected with an air blowing box and an air suction box which are oppositely arranged. When the stainless steel plate with the single face coated with the film is cut, high-power laser can be directly used for cutting the stainless steel plate at a time, high-speed airflow synchronously blown out by the air cooling mechanism can effectively restrain heat shrinkage of the elastic film caused by high temperature, material deformation and irregular edge cutting are avoided, the machining efficiency is remarkably improved while the high-power laser penetrates through the stainless steel plate, and the production cost is reduced. Repeated positioning errors and operation cost of equipment are reduced, and integrated efficient precision machining of the film-coated metal plate is achieved.

Description

Technical Field

[0001] This invention relates to the field of laser die-cutting machines, specifically a laser die-cutting machine capable of cutting elastic films. Background Technology

[0002] Laser die-cutting technology is a significant technological breakthrough in recent years, which has gradually replaced traditional mechanical die-cutting in the field of precision machining, especially in industries such as printing and packaging and new energy. Its core lies in using a high-energy-density laser beam to replace physical molds for non-contact processing of materials.

[0003] When cutting single-sided coated stainless steel sheets, existing laser die-cutting machines often place the stainless steel sheet with the elastic film facing upwards, first using a low-power laser to cut the film, and then using a high-power laser to cut the stainless steel sheet along the path of the film.

[0004] Regarding the aforementioned technologies, existing laser die-cutting machines that directly cut film and stainless steel plates simultaneously with high-power lasers are prone to shrinkage of the film at the cut due to thermal effects, which can lead to uneven cut edges or deformation of the film material, affecting processing accuracy and finished product quality. On the other hand, the secondary cutting method requires repeated cutting, which reduces processing efficiency and places higher demands on the motion control system of the equipment for repeatable positioning, increasing operating costs and the risk of failure.

[0005] In summary, existing laser die-cutting machines have difficulty simultaneously cutting stainless steel plates covered with elastic films and the elastic film itself. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a laser die-cutting machine capable of cutting elastic films, so as to solve the technical problem that existing laser die-cutting machines are unable to simultaneously cut stainless steel plates covered with elastic films and the elastic films themselves.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a laser die-cutting machine capable of cutting elastic films, comprising a machine housing, wherein a first movable stage capable of horizontal and vertical movement and a second movable stage capable of vertical movement are provided inside the machine housing, and a mounting frame is also provided, wherein the mounting frame is fixed to the first movable stage and a laser cutting head is provided at its bottom end, wherein a fixed seat coaxial with the laser cutting head is provided at the bottom end of the mounting frame, and an air blowing box and an air suction box arranged facing each other are respectively connected to the bottom end of the fixed seat.

[0008] By adopting the above technical solution, when cutting single-sided coated stainless steel plates, a high-power laser can be used to complete the cutting in one go. The high-speed airflow blown out by the air-cooling mechanism can effectively suppress the thermal shrinkage of the elastic film caused by high temperature, avoid material deformation and uneven cutting edges. While the high-power laser penetrates the stainless steel plate, it protects the integrity of the coated area, eliminates the need for a secondary cutting process, significantly improves processing efficiency, reduces equipment repetitive positioning errors and operating costs, and realizes integrated, efficient and precise processing of coated metal plates.

[0009] The present invention is further configured such that the bottom end of the blowing box is provided with a downwardly oriented air outlet, and the bottom end of the suction box is provided with an air inlet corresponding to the air outlet, wherein the area of ​​the air inlet is larger than that of the air outlet.

[0010] Preferably, the cooling airflow is blown out obliquely from the air outlet, forming an air curtain along the material surface, which effectively dissipates the heat accumulated in the cutting area and inhibits the deformation of the elastic film caused by local heating.

[0011] The present invention is further configured such that the fixing base is provided with a first annular groove and a second annular groove that are parallel to each other along its own height direction, a first annular piece is rotatably connected in the first annular groove and the first annular piece is connected to the air blowing box, and a second annular piece is rotatably connected in the second annular groove and the second annular piece is connected to the air suction box.

[0012] Preferably, the blowing box and the suction box can maintain gas delivery during rotation.

[0013] The present invention is further configured such that an air intake pipe and an exhaust pipe are respectively installed at the top of the fixed base, the air intake pipe extends downward into the first annular groove, and the exhaust pipe extends downward into the second annular groove.

[0014] Preferably, air is blown into the first annular groove through the air inlet pipe, so that a high-speed cooling airflow can flow out from the bottom of the air blowing box, while the negative pressure at the bottom of the air intake box is effectively prevented from escaping by the continuous air extraction through the exhaust pipe.

[0015] The present invention is further configured such that the top and bottom ends of the first ring piece are both attached to the inner wall of the first ring groove, and the top and bottom ends of the second ring piece are both attached to the outer wall of the second ring groove. The diameters of the first ring groove and the second ring groove are the same, and the diameter of the first ring piece is smaller than that of the second ring piece.

[0016] Preferably, this effectively improves the airtightness of the first annular groove and the second annular groove.

[0017] The invention is further configured such that a toothed ring is fixedly connected to the top of the air blowing box, the toothed ring is connected to the top of the air suction box through a connecting platform, the toothed ring is coaxial with the laser cutting head and is in a horizontal state, and a drive gear for driving the toothed ring to rotate is installed on the mounting bracket.

[0018] Preferably, a drive gear is used to drive the gear ring to rotate, thereby causing the air blowing box and air suction box to rotate in a cycle.

[0019] The present invention is further configured such that the width of the air outlet and the air inlet are both greater than the width of the laser cutting head, and the height of the bottom end is lower than the height of the bottom end of the laser cutting head.

[0020] Preferably, the blowing and suction boxes form a flowing air curtain below the laser cutting head that can cover the laser cutting surface.

[0021] The invention is further configured such that a honeycomb platform is fixedly installed on the top surface of the second moving platform, and a positioning platform is respectively provided at both ends of the honeycomb platform on the second moving platform, and a clamping piece for clamping the stainless steel plate is installed on the positioning platform.

[0022] Preferably, it facilitates quick positioning of the stainless steel sheet to be cut.

[0023] The present invention is further configured such that a vertical positioning post is installed on the positioning platform, a positioning ear is fixedly connected to the middle of the clamping piece, and a positioning hole is provided on the positioning ear for cooperating with the positioning post.

[0024] Preferably, by utilizing the cooperation between the positioning hole and the insertion post, accurate and rapid positioning can be achieved after flipping the stainless steel plate.

[0025] The present invention is further configured such that two parallel second moving stages are provided inside the chassis, and both second moving stages are within the travel range of the lateral movement of the first moving stage.

[0026] Preferably, when cutting the stainless steel plate on one of the second moving stages, the stainless steel plate on the other second moving stage can be flipped, which facilitates further improvement of the laser cutting efficiency of the stainless steel plate while ensuring the integrity of the film.

[0027] In summary, the present invention has the following main beneficial effects: 1. This invention, by setting a wind-cooling mechanism around the laser welding head to blow air onto the plane to be cut, allows for direct one-time cutting of single-sided coated stainless steel plates using a high-power laser. The high-speed airflow simultaneously blown by the wind-cooling mechanism effectively suppresses thermal shrinkage of the elastic film due to high temperature, avoiding material deformation and uneven cut edges. While the high-power laser penetrates the stainless steel plate, it protects the integrity of the coated area, eliminating the need for a secondary cutting process, significantly improving processing efficiency, reducing equipment repetitive positioning errors and operating costs, and achieving integrated, efficient, and precise processing of coated metal sheets.

[0028] 2. This invention creates a symmetrical airflow field by setting a negative pressure suction box opposite the air-cooling box, which effectively balances the air pressure disturbance in the cutting area. At the same time, it can quickly remove the molten metal slag and dust generated during laser cutting, preventing them from adhering to the film surface and causing pollution or damage. This further ensures the cleanliness of the cutting edge and product quality. Meanwhile, the stable airflow field suppresses thermally induced vibration, improving the stability and precision of the cutting process. It is especially suitable for precision die-cutting operations in high-density, continuous production line environments.

[0029] 3. This invention fixes a toothed ring coaxial with the laser cutting head above the air-cooling mechanism and drives the toothed ring to rotate using a drive mechanism. During the movement of the laser cutting head, the air intake end of the air-cooling mechanism can be orthogonal to the movement direction of the laser cutting head, effectively avoiding the spread of smoke and dust caused by the excessive speed of the laser cutting head. Furthermore, when the laser cutting head stops moving, the air-cooling mechanism can also improve the heat dissipation effect on the cutting area by rotating in a cycle, further preventing the film in the cutting area from deforming.

[0030] 4. This invention sets clamping mechanisms at both ends of the platform for loading stainless steel plates. By using clamping mechanisms to hold and fix both ends of the stainless steel plates, when cutting stainless steel plates with double-sided film and a relatively thick thickness, the elastic film on one side can be removed first with a low-power laser. Then, the positioning components between the clamping mechanism and the loading platform are used to achieve precise positioning of the stainless steel plate after it is flipped over. Then, it can be cut a second time along the mirrored cutting path. Compared with the traditional cutting method, this invention effectively avoids cutting errors caused by positioning deviations. Attached Figure Description

[0031] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the chassis of the present invention in the open state; Figure 3 For the present invention Figure 2 Enlarged view of A in the middle; Figure 4 This is a perspective view of the mounting bracket of the present invention; Figure 5 For the present invention Figure 5 Enlarged view of B in the middle; Figure 6 This is a perspective view of the fixed base, the blowing box, and the suction box of the present invention in a disassembled state; Figure 7 This is a perspective cross-sectional view of the blowing box and the suction box of the present invention; Figure 8 This is a perspective view of the cross-section of the air blowing box and the air suction box from another angle of the present invention; Figure 9 This is a front view of the cross-section of the blowing box and the suction box of the present invention; Figure 10 This is a schematic diagram of the stainless steel plate flipped over on the honeycomb platform of the present invention.

[0032] Explanation of reference numerals in the attached figures: 1. Chassis; 2. First moving stage; 3. Second moving stage; 301. Cellular stage; 302. Positioning stage; 303. Positioning pin; 4. Mounting bracket; 5. Laser cutting head; 6. Fixing base; 601. First annular groove; 602. Second annular groove; 603. Air inlet pipe; 604. Exhaust pipe; 7. Air blowing box; 701. First annular plate; 702. Air outlet; 8. Air suction box; 801. Second annular plate; 802. Air inlet; 9. Gear ring; 10. Connecting platform; 11. Drive gear; 12. Clamping plate; 1201. Positioning ear; 1202. Positioning hole. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of the present invention will now be described.

[0035] First embodiment: For an example of a laser die-cutting machine capable of cutting elastic films, please refer to [link / reference]. Figures 1-10 The device includes a chassis 1, which contains a first moving stage 2 capable of horizontal and vertical movement, and a second moving stage 3 capable of vertical movement. Specifically, the moving principle of the first moving stage 2 and the second moving stage 3 is a mature three-axis moving stage technology, which will not be elaborated here.

[0036] It also includes a mounting bracket 4, which is fixed to the first moving platform 2 and has a laser cutting head 5 at its bottom. The bottom of the mounting bracket 4 is provided with a fixed seat 6 coaxial with the laser cutting head 5, and the bottom of the fixed seat 6 is respectively connected to an air blowing box 7 and an air suction box 8 arranged in opposite directions.

[0037] For details regarding the above embodiments, please refer to [link / reference]. Figures 2-9The bottom of the air blowing box 7 is provided with an air outlet 702 that slopes downwards, and the bottom of the air suction box 8 is provided with an air inlet 802 that corresponds to the air outlet 702. The area of ​​the air inlet 802 is larger than that of the air outlet 702, so that the cooling airflow is blown out obliquely from the air outlet 702, forming an air curtain that adheres to the material surface, effectively dissipating the heat accumulated in the cutting area and suppressing the deformation of the elastic film caused by local heating.

[0038] Furthermore, the fixed base 6 is provided with a first annular groove 601 and a second annular groove 602 that are parallel to each other along its own height direction. A first annular piece 701 is rotatably connected in the first annular groove 601 and is connected to the air blowing box 7. A second annular piece 801 is rotatably connected in the second annular groove 602 and is connected to the air suction box 8. This allows the air blowing box 7 and the air suction box 8 to maintain gas delivery during rotation. Specifically, a heat-insulating annular gasket is provided between the first annular groove 601 and the second annular groove 602 to reduce the heat exchange between the cooling airflow and the heat-absorbing airflow, thereby allowing the cooling airflow to cool the cutting gap more efficiently.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figures 2-9 The top of the fixed base 6 is respectively equipped with an air inlet pipe 603 and an exhaust pipe 604. The air inlet pipe 603 extends downward into the first annular groove 601, and the exhaust pipe 604 extends downward into the second annular groove 602. Air is blown into the first annular groove 601 through the air inlet pipe 603, so that a high-speed cooling airflow can flow out from the bottom of the air blowing box 7. The negative pressure at the bottom of the air suction box 8 is effectively prevented from escaping by the continuous suction of the exhaust pipe 604.

[0040] Furthermore, the top and bottom of the first ring plate 701 are both attached to the inner wall of the first ring groove 601, and the top and bottom of the second ring plate 801 are both attached to the outer wall of the second ring groove 602. The diameters of the first ring groove 601 and the second ring groove 602 are the same, and the diameter of the first ring plate 701 is smaller than that of the second ring plate 801, which effectively improves the airtightness of the first ring groove 601 and the second ring groove 602. Specifically, since the first ring groove 601 is a positive pressure environment, when the air intake pipe 603 blows air into the first ring groove 601, the edge of the first ring plate 701 can better fit the inner wall of the first ring groove 601. Similarly, when the exhaust pipe 604 draws air, the edge of the second ring plate 801 can also better fit the outer wall of the second ring groove 602, thereby further ensuring the airtightness of the air blowing box 7 and the air intake box 8 during rotation.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figures 2-9A toothed ring 9 is fixedly connected to the top of the air blowing box 7. The toothed ring 9 is connected to the top of the air suction box 8 through a connecting platform 10. The toothed ring 9 is coaxial with the laser cutting head 5 and is in a horizontal state. A drive gear 11 for driving the toothed ring 9 to rotate is installed on the mounting bracket 4.

[0042] Specifically, in this embodiment, the mounting bracket 4 is equipped with a motor for connecting the drive gear 11. The motor drives the drive gear 11 to rotate, thereby controlling the orientation of the air blowing box 7 and the air suction box 8. Furthermore, the motor is a servo motor, which can better control the actual rotation angle and orientation of the air blowing box 7 and the air suction box 8. The drive gear 11 drives the gear ring 9 to rotate, thereby driving the air blowing box 7 and the air suction box 8 to rotate cyclically. The width of the air outlet 702 and the air inlet 802 are both greater than the width of the laser cutting head 5, and the height of their bottom ends is lower than the height of the bottom end of the laser cutting head 5, so that the air blowing box 7 and the air suction box 8 form a flowing air curtain that can cover the laser cutting surface below the laser cutting head 5.

[0043] Second embodiment: For an example of a laser die-cutting machine capable of cutting elastic films, please refer to [link / reference]. Figures 1-10 Based on the first embodiment, the difference from the first embodiment is that a honeycomb platform 301 is fixedly installed on the top surface of the second moving stage 3. Specifically, the honeycomb platform 301 is made of heat-resistant material, which can avoid being damaged by the laser during the laser cutting process. The second moving stage 3 is provided with positioning platforms 302 at both ends of the honeycomb platform 301. Clamping plates 12 for holding stainless steel plates are installed on the positioning platforms 302 to facilitate quick positioning of the stainless steel plate to be cut.

[0044] Specifically, a vertical positioning pin 303 is installed on the positioning platform 302, and a positioning ear 1201 is fixedly connected to the middle of the clamping plate 12. The positioning ear 1201 is provided with a positioning hole 1202 for cooperating with the positioning pin 303. By utilizing the cooperation between the positioning hole 1202 and the positioning pin 303, accurate and rapid positioning can be achieved after flipping the stainless steel plate. The clamping plate 12, which is clamped at one end of the stainless steel plate, consists of two pieces, upper and lower. The upper and lower clamping plates 12 respectively clamp the top and bottom surfaces of the end of the stainless steel plate. The upper and lower clamping plates 12 are connected and clamped together by countersunk bolts.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figures 1-3 The machine housing 1 is equipped with two parallel second moving stages 3. Both second moving stages 3 are within the travel range of the first moving stage 2. When cutting the stainless steel plate on one of the second moving stages 3, the stainless steel plate on the other second moving stage 3 can be flipped to further improve the laser cutting efficiency of the stainless steel plate while ensuring the integrity of the film.

[0046] In practical operation, this invention: The two ends of the stainless steel plate to be cut are pre-fixed using clamping plates 12 respectively. The positioning holes 1202 of the positioning ears 1201 on the clamping plates 12 are inserted into the positioning pins 303 at both ends of the second moving table 3. After adjusting the position of the stainless steel plate, the bolts on the clamping plates 12 are tightened to clamp the stainless steel plate. The first moving stage 2 and the second moving stage 3 move relative to each other, causing the laser cutting head 5 to cut the stainless steel plate along a preset path. The high-power laser directly cuts through the elastic film and cuts the body of the stainless steel plate. During the cutting process, the cooling airflow flows into the first annular groove 601 along the air inlet pipe 603, and then flows into the air blowing box 7 from the first annular groove 601. Then it flows out from the air outlet 702 at the bottom of the air blowing box 7 and flows obliquely towards the cutting gap, efficiently removing the heat generated by the laser cutting. At the same time, the negative pressure source connected to the exhaust pipe 604 continuously draws air, keeping the second annular groove 602 in a negative pressure state. The airflow flowing towards the air inlet 802 is guided by the low pressure at the air inlet 802 after passing through the cutting gap, and can flow into the suction box 8 efficiently, which can effectively cool down and prevent the emission of smoke and dust during the cutting process. When the laser cutting head 5 moves in a straight line to cut a stainless steel plate, if the laser cutting head 5 moves at a relatively fast speed, the drive gear 11 drives the gear ring 9 to rotate the air blowing box 7 and the air suction box 8, so that the air suction box 8 faces the direction of movement of the laser cutting head 5, further preventing the smoke and dust generated by laser cutting from escaping. When the laser cutting head 5 moves at a relatively slow speed, the air blowing box 7 and the air suction box 8 can face the direction orthogonal to the laser cutting path, so that the air curtain formed by the cooling airflow can more fully cool the cutting gap, so as to ensure the heat dissipation efficiency of the laser cutting head 5 when moving at low speed, thereby preventing the elastic film from being damaged. When cutting double-sided coated stainless steel sheets, first use a low-power laser to cut the elastic film on one side of the stainless steel sheet, and then flip the stainless steel sheet to cut the elastic film and stainless steel sheet on the other side at the same time.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A laser die cutter capable of cutting an elastic film, characterized by, Include: The cabinet (1) is provided with a first mobile station (2) capable of transverse and vertical movement, and a second mobile station (3) capable of longitudinal movement; The mounting bracket (4) is fixed to the first mobile station (2), and the bottom end is provided with a laser cutting head (5), the bottom end of the mounting bracket (4) is provided with a fixed seat (6) coaxial with the laser cutting head (5), and the bottom end of the fixed seat (6) is respectively connected with the air blowing box (7) and the air suction box (8) arranged opposite to each other.

2. The laser die cutter capable of cutting elastic film according to claim 1, characterized in that: The bottom end of the air blowing box (7) is provided with a downward inclined air outlet (702), and the bottom end of the air suction box (8) is provided with an air inlet (802) corresponding to the air outlet (702), and the area of the air inlet (802) is greater than that of the air outlet (702).

3. The laser die cutter capable of cutting elastic film according to claim 1, characterized in that: The fixed seat (6) is respectively provided with a first ring groove (601) and a second ring groove (602) parallel to each other along the height direction of itself, the first ring groove (601) is rotatably connected with a first ring piece (701), the first ring piece (701) is communicated with the air blowing box (7), and the second ring groove (602) is rotatably connected with a second ring piece (801), the second ring piece (801) is communicated with the air suction box (8).

4. The laser die cutter capable of cutting elastic film according to claim 3, characterized in that: The top end of the fixed seat (6) is respectively provided with an air inlet pipe (603) and an air outlet pipe (604), the air inlet pipe (603) extends downward into the first ring groove (601), and the air outlet pipe (604) extends downward into the second ring groove (602).

5. The laser die cutter capable of cutting elastic film according to claim 4, characterized in that: The top end and the bottom end of the first ring piece (701) are attached to the inner wall of the first ring groove (601), the top end and the bottom end of the second ring piece (801) are attached to the outer wall of the second ring groove (602), the diameters of the first ring groove (601) and the second ring groove (602) are the same, and the diameter of the first ring piece (701) is smaller than that of the second ring piece (801).

6. The laser die cutter capable of cutting elastic film according to claim 4, characterized in that: The top end of the air blowing box (7) is fixedly connected with a gear ring (9), the gear ring (9) and the top end of the air suction box (8) are connected through a connecting table (10), the gear ring (9) is coaxial with the laser cutting head (5) and is in a horizontal state, and the mounting bracket (4) is provided with a driving gear (11) for driving the gear ring (9) to rotate.

7. The laser die cutter capable of cutting elastic film according to claim 2, characterized in that: The width of the air outlet (702) and the air inlet (802) is greater than the width of the laser cutting head (5), and the height of the bottom end is lower than the height of the bottom end of the laser cutting head (5).

8. The laser die cutter capable of cutting elastic film according to claim 1, characterized in that: The top surface of the second mobile station (3) is fixedly provided with a honeycomb table (301), the second mobile station (3) is provided with a positioning table (302) at both ends of the honeycomb table (301), and the positioning table (302) is provided with a clamping piece (12) for clamping a stainless steel plate.

9. The laser die cutter capable of cutting elastic film according to claim 8, characterized in that: The positioning table (302) is provided with a vertical positioning column (303), the middle part of the clamping piece (12) is fixedly connected with a positioning ear (1201), and the positioning ear (1201) is provided with a positioning hole (1202) for cooperating with the positioning column (303).

10. The laser die cutter capable of cutting elastic film according to claim 9, characterized in that: The cabinet (1) is provided with two second moving tables (3) parallel to each other, and the two second moving tables (3) are both within the stroke range of the lateral movement of the first moving table (2).

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