A metal strip longitudinal continuous cutting apparatus

Abstract

The utility model discloses a metal material belt longitudinal continuous cutting equipment in the field of metal container, including frame, be provided with feeding device, longitudinal cutting device and two sets of limiting mechanism on the frame, the feeding device is located longitudinal cutting device incoming material front side, is used for continuously conveying metal material band along its length direction to the back, two sets of limiting mechanism symmetrical distribution is in longitudinal cutting device both sides, is used for limiting the moving position of metal material band in the direction of conveyance, longitudinal cutting device includes the loading platform setting on the frame, be provided with vertical lifting mechanism on the loading platform, be provided with horizontal mounting platform on vertical lifting mechanism, be provided with a plurality of laser cutting heads that are equally spaced distribution in the width direction of metal material band on the horizontal mounting platform, a plurality of support assemblies are provided on the loading platform upside corresponding metal material band downside. The utility model can complete full width cutting one time, eliminates the error of reciprocating motion, guarantees each cutting point position accuracy consistent, improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of metal container processing technology, and specifically relates to a longitudinal continuous cutting device for metal strips. Background Technology

[0002] In the large-scale industrial production of metal containers, the longitudinal continuous cutting of metal strips (usually aluminum coils, tin-plated steel coils, or stainless steel coils) is one of the core processes determining the efficiency of subsequent forming and product quality. "Longitudinal cutting" refers to cutting the metal strip into strips of equal width along its length. The width of these strips directly corresponds to the circumference (e.g., the unfolded length in the height direction of a can) or diameter (e.g., the side length of a square can) of the metal container. With the surge in demand for metal containers from industries such as beverage and food packaging, and the increasing consumer demands for container precision and appearance, the longitudinal cutting process of metal strips is facing increasingly stringent technical challenges.

[0003] In existing technologies, mechanical punching equipment is commonly used for longitudinal cutting. Mechanical punching cuts strip material through the shearing action of a punch and die, and its advantages lie in its low cost and mature technology. However, its disadvantages are: due to the limited movement trajectory of the mechanical cutter (usually a reciprocating linear motion), a single cut can only complete one slit in the width direction of the strip, requiring multiple passes to cover the entire strip width. Furthermore, wear of the mechanical cutter (such as dulling or chipping of the cutting edge) increases the burr rate, requiring frequent machine stops for tool changes, further reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a longitudinal continuous cutting device for metal strips, which can complete the full width cutting in one go, eliminate the error of reciprocating motion, ensure the consistent positional accuracy of each cutting point, and improve production efficiency.

[0005] The purpose of this utility model is achieved as follows: A longitudinal continuous cutting device for metal strip includes a frame, on which a feeding device, a longitudinal cutting device, and two sets of limiting mechanisms are arranged. The feeding device is located in front of the material receiving side of the longitudinal cutting device and is used to continuously convey the metal strip backward along its length direction. The two sets of limiting mechanisms are symmetrically distributed on both sides of the longitudinal cutting device and are used to limit the movement position of the metal strip in the conveying direction. The longitudinal cutting device includes a platform arranged on the frame, a vertical lifting mechanism is arranged on the platform, a horizontal mounting platform is arranged on the vertical lifting mechanism, and a plurality of laser cutting heads are arranged at equal intervals in the width direction of the metal strip on the horizontal mounting platform. A plurality of support components are arranged on the upper side of the platform corresponding to the lower side of the metal strip.

[0006] In use, the feeding device continuously and stably conveys the metal strip backward along its length. Two sets of symmetrically distributed limiting mechanisms simultaneously restrict the lateral position of the strip from both sides, ensuring that it does not deviate during the conveying process. When the strip enters the longitudinal cutting device area, the vertical lifting mechanism drives the horizontal mounting platform and the equally spaced laser cutting head group to descend to a height that matches the upper surface of the strip. The laser cutting head group simultaneously emits a high-energy laser beam to longitudinally cut the strip. During the cutting process, the support components at the corresponding positions on the upper side of the platform support the area of ​​the strip being cut in real time, offsetting the local thermal deformation and cutting force generated by the laser cutting, and preventing the strip from sagging or vibrating. The cut strip is then conveyed backward by the feeding device to the next production process. Compared with existing technologies, the advantages of this utility model are as follows: the vertical lifting mechanism can precisely adjust the distance between the cutting head and the material strip, avoiding inconsistent cutting quality caused by material strip thickness fluctuations or conveying errors; in conjunction with the continuous feeding action of the feeding device, a continuous cutting mode of "feeding and cutting at the same time" can be realized, without stopping the machine to wait, and the cutting trajectory is continuous and without seam errors; the support component can support the lower surface of the material strip in the cutting area in real time, avoiding material strip deviation caused by gravity or cutting force, ensuring that the cutting trajectory is consistent with the design path, and constraining the local arching of the material strip caused by thermal expansion through the support force to avoid cutting misalignment; using the laser beam emitted by the laser head to replace the mechanical blade avoids the problem of blade dulling and chipping caused by long-term cutting, reducing downtime for blade replacement; by adjusting parameters such as laser power, frequency, and pulse width, it can be adapted to different metal materials and thicknesses without the need to replace the blade.

[0007] As a further improvement of this utility model, several of the laser cutting heads are staggered in the length direction of the metal strip.

[0008] As a further improvement of this utility model, the vertical lifting mechanism includes a mounting base, on which a lifting drive component and two vertical linear guide rails are provided. The two vertical linear guide rails are symmetrically distributed on both sides of the lifting drive component. A connecting seat is provided at the output end of the lifting drive component. The connecting seat is slidably connected to the two vertical linear guide rails through two sets of sliders respectively. The horizontal mounting platform is vertically connected to the connecting seat.

[0009] As a further improvement of this utility model, the lifting drive component includes a vertical motor disposed on the top of the mounting base, and a vertical lead screw is coaxially disposed on the output shaft of the vertical motor through a coupling. A lead screw nut is sleeved on the vertical lead screw, and the lead screw nut is connected to the connecting base.

[0010] As a further improvement of this utility model, the limiting mechanism includes a crossbeam, and the crossbeam is provided with a plurality of roller assemblies along its own length direction. The roller assembly includes a guide wheel that rolls in contact with the metal strip and two support plates arranged vertically opposite each other. The guide wheel is rotatably disposed between the two support plates through a coaxially arranged shaft. The crossbeam is supported on the frame by a plurality of columns.

[0011] As a further improvement of this utility model, the support component includes a plurality of support protrusions that are equally spaced along the length of the metal strip.

[0012] As a further improvement of this utility model, the supporting protrusion is a triangular pyramid structure.

[0013] As a further improvement of this utility model, the feeding device includes a horizontally arranged servo motor and two vertically downward arranged drive cylinders. A reducer is provided at the output end of the servo motor. The output shaft of the reducer is coaxially arranged with a drive roller through a coupling. The two ends of the drive roller are rotatably arranged in two fixed seats. A driven roller is arranged directly above the drive roller. The two ends of the driven roller are rotatably arranged in two slides. The piston rod ends of the two drive cylinders are respectively fixedly connected to the two slides. The cylinder bodies of the two drive cylinders are arranged on the top of the mounting frame. The two fixed seats are arranged in the mounting frame. The two slides are slidably connected to the mounting frame and can move closer to or further away from the two fixed seats. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention.

[0015] Figure 2 for Figure 1 Sectional view at point AA.

[0016] Figure 3 for Figure 1 Sectional view at point BB.

[0017] Figure 4 for Figure 2 Enlarged view of point C in the middle.

[0018] The components include: 1. Frame; 2. Feeding device; 201. Servo motor; 202. Drive cylinder; 203. Reducer; 204. Drive roller; 205. Fixed seat; 206. Driven roller; 207. Slide; 208. Mounting frame; 3. Longitudinal cutting device; 301. Platform; 302. Horizontal mounting platform; 303. Laser cutting head; 304. Mounting seat; 305. Vertical linear guide rail; 306. Connecting seat; 307. Slider; 308. Vertical motor; 309. Coupling; 310. Vertical lead screw; 311. Support protrusion; 4. Limiting mechanism; 401. Crossbeam; 402. Guide wheel; 403. Support plate; 404. Rotating shaft; 5. Metal strip. Detailed Implementation

[0019] like Figure 1-4 As shown, a metal strip longitudinal continuous cutting device includes a frame 1. The frame 1 is equipped with a feeding device 2, a longitudinal cutting device 3, and two sets of limiting mechanisms 4. The feeding device 2 is located in front of the longitudinal cutting device 3 and is used to continuously convey the metal strip 5 backward along its length direction. The two sets of limiting mechanisms 4 are symmetrically distributed on both sides of the longitudinal cutting device 3 and are used to limit the movement of the metal strip 5 in the conveying direction.

[0020] The longitudinal cutting device 3 includes a platform 301 mounted on a frame 1, a vertical lifting mechanism mounted on the platform 301, a horizontal mounting platform 302 mounted on the vertical lifting mechanism, and two laser cutting heads 303 evenly spaced along the width of the metal strip 5 mounted on the horizontal mounting platform 302. Multiple support components are mounted on the upper side of the platform 301 corresponding to the lower side of the metal strip 5. To disperse heat input and suppress thermal deformation of the material, the two laser cutting heads 303 are staggered along the length of the metal strip 5. The vertical lifting mechanism includes a mounting base 304, on which a lifting drive component and two vertical... The lifting drive unit includes two vertical linear guide rails 305 symmetrically distributed on both sides of the lifting drive unit. The output end of the lifting drive unit is provided with a connecting seat 306. The connecting seat 306 is slidably connected to the two vertical linear guide rails 305 through two sets of sliders 307 respectively. The horizontal mounting platform 302 is perpendicular to the connecting seat 306 and fixedly connected to its front side. The lifting drive unit includes a vertical motor 308 set on the top of the mounting base 304. The output shaft of the vertical motor 308 is coaxially provided with a vertical lead screw 310 through a coupling 309. A lead screw nut is sleeved on the vertical lead screw 310 and connected to the connecting seat 306.

[0021] The limiting mechanism 4 includes a crossbeam 401, which has two roller assemblies along its length. The roller assembly includes a guide wheel 402 that rolls in contact with the metal strip 5 and two support plates 403 that are arranged vertically opposite each other. The guide wheel 402 is rotatably mounted between the two support plates 403 via a coaxially arranged shaft 404. The crossbeam 401 is supported on the frame 1 by two columns.

[0022] The support component includes multiple support protrusions 311 evenly distributed along the length of the metal strip 5. Preferably, the support protrusions 311 are triangular pyramid structures with small contact areas at their tips, which make point contact with the lower side of the metal strip 5. This reduces the conduction of heat generated by the laser during the cutting process to the support component, prevents the support component from deforming due to high temperature, reduces the expansion of the heat-affected zone of the strip, maintains the local temperature stability of the strip, and improves the cutting quality. In addition, the sharp angle of the tips makes it difficult for slag and particles generated during cutting to adhere stably. When the strip moves, the airflow flows through the gaps between the triangular pyramids, forming a "blowing effect", which can further remove surface impurities.

[0023] The feeding device 2 includes a horizontally arranged servo motor 201 and two vertically downward arranged drive cylinders 202. A reducer 203 is provided at the output end of the servo motor 201. The output shaft of the reducer 203 is coaxially arranged with a drive roller 204 through a coupling 309. The two ends of the drive roller 204 are rotatably arranged in two fixed seats 205. A driven roller 206 is arranged directly above the drive roller 204. The two ends of the driven roller 206 are rotatably arranged in two slides 207. The piston rod ends of the two drive cylinders 202 are fixedly connected to the two slides 207 respectively. The cylinder bodies of the two drive cylinders 202 are arranged on the top of the mounting frame 208. The two fixed seats 205 are arranged in the mounting frame 208. The two slides 207 are slidably connected to the mounting frame 208 and can move closer to or further away from the two fixed seats 205.

[0024] In use, the drive cylinder 202 can adjust the piston rod extension length in real time, pushing the slide 207 to move along the guide rail of the mounting frame 208, precisely controlling the distance between the driven roller 206 and the driving roller 204 within the range of 0.1-0.5mm to ensure feeding accuracy. The sliding connection between the slide 207 and the mounting frame 208 ensures smooth and uninterrupted movement of the driven roller 206, avoiding fluctuations in clamping force due to gaps. The servo motor 201 drives the driving roller 204 to provide basic traction, while the driven roller 206 is subjected to adjustable pressure through the cylinder. The combined effect of these two components generates sufficient friction between the material belt and the rollers, preventing slippage. The weight of the connecting seat 306, its front horizontal mounting platform 302, and the laser cutting head 303 is evenly distributed through the guide rails on both sides. The load is transferred to the mounting base 304 to avoid concentrated load on one side of the guide rail and reduce the risk of guide rail deformation. The pitch error of the ball screw can be controlled within ±0.005mm / 100mm. With the pulse control of the vertical motor 308, the micron-level positioning of the cutting head lifting stroke can be achieved, which meets the stringent requirements of laser cutting for focal length and thus ensures the quality of laser cutting. Two sets of limiting mechanisms 4 form a channel. When the material strip enters the channel, its two sides in the width direction contact the circumferential surface of the guide wheel 402. Since the guide wheel 402 can rotate freely, when the material strip moves along the length direction, the guide wheel 402 rotates synchronously with the material strip, which not only avoids scratching damage to the material strip, but also restricts the lateral movement of the material strip in the width direction through the position of the guide wheel 402.

[0025] The advantages of this invention are as follows: This equipment uses multiple laser cutting heads 303 that are evenly distributed (the number of which can be adjusted according to the width of the strip and the cutting requirements) to simultaneously complete the processing of multiple cutting points in the width direction of the strip, thereby increasing the cutting length per unit time by several times and significantly improving the production capacity. It is especially suitable for continuous production scenarios of large batches and wide strips.

[0026] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A metal strip longitudinal continuous cutting apparatus comprising a frame, characterized in that, The frame is equipped with a feeding device, a slitting device, and two sets of limiting mechanisms. The feeding device is located in front of the slitting device and is used to continuously convey the metal strip backward along its length. The two sets of limiting mechanisms are symmetrically distributed on both sides of the slitting device to limit the movement of the metal strip in the conveying direction. The slitting device includes a platform mounted on the frame. A vertical lifting mechanism is mounted on the platform, and a horizontal mounting platform is mounted on the vertical lifting mechanism. Several laser cutting heads are evenly distributed in the width direction of the metal strip on the horizontal mounting platform. Several support components are mounted on the upper side of the platform corresponding to the lower side of the metal strip.

2. A metal strip longitudinal continuous cutting apparatus according to claim 1, wherein Several of the laser cutting heads are staggered along the length of the metal strip.

3. The apparatus according to claim 1, wherein The vertical lifting mechanism includes a mounting base, on which a lifting drive component and two vertical linear guide rails are provided. The two vertical linear guide rails are symmetrically distributed on both sides of the lifting drive component. A connecting seat is provided at the output end of the lifting drive component. The connecting seat is slidably connected to the two vertical linear guide rails through two sets of sliders. The horizontal mounting platform is vertically connected to the connecting seat.

4. A metal strip longitudinal continuous cutting apparatus according to claim 3, wherein The lifting drive component includes a vertical motor mounted on the top of the mounting base. The output shaft of the vertical motor is coaxially mounted with a vertical lead screw via a coupling. A lead screw nut is fitted onto the vertical lead screw, and the lead screw nut is connected to the connecting base.

5. The apparatus according to claim 1, wherein The limiting mechanism includes a crossbeam, and the crossbeam is provided with a number of roller assemblies along its own length. The roller assembly includes a guide wheel that rolls in contact with the metal strip and two support plates that are arranged vertically opposite each other. The guide wheel is rotatably arranged between the two support plates through a coaxially arranged shaft. The crossbeam is supported on the frame by a number of columns.

6. The apparatus according to claim 1, wherein The support component includes several support protrusions that are evenly spaced along the length of the metal strip.

7. A metal strip longitudinal continuous cutting apparatus according to claim 6, wherein The supporting protrusion has a triangular pyramidal structure.

8. The apparatus according to claim 1, wherein The feeding device includes a horizontally arranged servo motor and two vertically downward-arranged drive cylinders. A reducer is provided at the output end of the servo motor. A drive roller is coaxially arranged on the output shaft of the reducer via a coupling. The two ends of the drive roller are rotatably mounted in two fixed seats. A driven roller is arranged directly above the drive roller. The two ends of the driven roller are rotatably mounted in two slides. The piston rod ends of the two drive cylinders are fixedly connected to the two slides respectively. The cylinder bodies of the two drive cylinders are located on the top of the mounting frame. The two fixed seats are located inside the mounting frame. The two slides are slidably connected to the mounting frame and can move closer to or further away from the two fixed seats.

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