A cover film engraving laser cutting machine
By using a magnetic powder brake and a vertical pressure assembly in the cover film engraving laser cutting machine, the problem of wrinkles or stretching caused by uneven tension during the transmission and stopping of the roll material was solved, thus achieving stable transportation and high-precision cutting of the cover film roll material.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TANAKA SHUANGJING PHARM EQUIP CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-05
Smart Images
Figure CN224322524U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser cutting machines, and in particular to a laser cutting machine for engraving a cover film. Background Technology
[0002] Laser cutting machines utilize a laser beam generated by a laser, which is focused into a high-power-density beam by an optical system and then irradiated onto the surface of the workpiece. The laser beam causes the workpiece to reach its melting or boiling point, while high-pressure gas coaxial with the beam blows away the molten or vaporized metal, thus achieving high-precision and high-efficiency cutting. Laser cutting is characterized by high precision, fast cutting speed, smooth cut edges, and low processing costs.
[0003] An automatic laser cutting machine for roll material processing, with authorization announcement number CN206185327U, is currently available on the Chinese patent website. This machine includes a base, a double-drive gantry mounted on the base, a laser cutting mechanism, a guiding mechanism, a cutting mechanism, and a suction cup. The laser cutting mechanism includes a laser fixed to the base, a reflecting mirror and a vision positioning cutting gantry mounted on the double-drive gantry, and a controller connected to the vision positioning cutting gantry. The laser beam emitted by the laser is always reflected by the reflecting mirror to the vision positioning cutting gantry. The guiding mechanism includes unwinding rollers, a pair of front traction rollers, and a pair of rear traction rollers arranged in sequence. The suction cup is located between the pair of front traction rollers and the pair of rear traction rollers. The vision positioning cutting gantry is located above the suction cup, and the cutting mechanism is located behind the pair of rear traction rollers. This cutting machine can feed, unwind, cut, and trim entire rolls of material with high processing accuracy and simple operation.
[0004] However, in actual operation, uneven tension can easily cause wrinkles or stretching of the coiled material during transport and stopping. Utility Model Content
[0005] In view of this, the present invention provides a laser cutting machine for engraving a cover film to solve the problem of wrinkles or stretching caused by uneven tension during the transmission and stopping of roll material.
[0006] A laser cutting machine for engraving a cover film includes a cutting machine body, an unwinding assembly mounted on the cutting machine body, two output cutting assemblies mounted on the side of the cutting machine body opposite to the unwinding assembly, two vacuum adsorption plates mounted between the unwinding assembly and the output cutting assemblies, a three-axis moving device mounted on the cutting machine body and positioned above the vacuum adsorption plates, and two laser engraving assemblies mounted on the three-axis moving devices. The unwinding assembly includes a mounting housing with one end fixed to the cutting machine body, two magnetic powder brakes mounted inside the mounting housing, two unwinding air-expansion rollers respectively passing through the mounting housing and connected to the magnetic powder brakes, and two guide rollers with one end rotatably mounted on the outside of the mounting housing. The other end of each guide roller is rotatably mounted on a mounting plate and mounted on the cutting machine body via the mounting plate. The two output cutting assemblies are respectively configured to correspond to different unwinding air-expansion rollers. The material feeding and cutting assembly includes a base mounted on the main body of the cutting machine, a main traction roller with both ends mounted on the base, a secondary traction roller mounted above the main traction roller, two vertical pressure components that drive the secondary traction roller to press against the main traction roller, and a cutting assembly mounted on the base. The main traction roller is driven by a motor to rotate. The two ends of the secondary traction roller are movably mounted on the base via the vertical pressure components, and the secondary traction roller cooperates with the main traction roller to clamp the cover film roll. The cutting assembly cuts the cover film roll when it stops moving. Two vacuum suction plates are respectively positioned corresponding to the unwinding air expansion roller. Two laser engraving machines move on the three-axis moving device to process the cover film roll.
[0007] Furthermore, the guide roller is provided with retaining rings at both ends, and the discharge cutting assembly also includes a second guide roller that is rotatably mounted on the base at both ends.
[0008] Furthermore, the base includes a base plate and two side plates disposed on both sides of the base plate, the side plates being arranged in the same direction as the two unwinding air rollers.
[0009] Furthermore, the main body of the cutting machine has a discharge area on the side near the discharge cutting component, and the base has an inclined discharge plate on the side away from the unwinding component.
[0010] Furthermore, the vertical pressurization assembly includes two first slide rods vertically arranged inside the base, a support block movable on the first slide rods, and a first cylinder arranged above the first slide rods. The shaft end of the traction roller is rotatably inserted into the support block. The output end of the first cylinder passes through the base and is fixedly connected to the support block. The traction roller is driven by the first cylinder to move along the first slide rods.
[0011] Furthermore, the cutting assembly includes an upper blade movably mounted on the base, a lower blade fixedly mounted on the base, and a sliding assembly for driving the upper blade. The upper blade is driven by the sliding assembly to move vertically on the base via an upper blade holder. The lower blade is fixedly mounted on the base via a lower blade holder, and its two sides pass through the base and engage with it. The sliding assembly includes a second slide rod vertically mounted on the outside of the side plate, a slider movably mounted on the slide rod, and a second cylinder mounted on the base plate. The slider is fixedly connected to the upper blade holder via a connecting seat, and the second cylinder drives the connecting seat.
[0012] Furthermore, the three-axis moving device is disposed above the vacuum adsorption plate, located between the unwinding assembly and the discharge cutting assembly. The x-axis of the three-axis moving device extends in the direction of the arrangement of the unwinding assembly and the discharge cutting assembly, the y-axis extends in the direction of the arrangement of the two vacuum adsorption plates, and the z-axis is perpendicular to the x and y axes.
[0013] Furthermore, the two laser engraving machines are respectively positioned on both sides of the z-axis of the three-axis moving device.
[0014] Compared with existing technologies, the laser cutting machine for engraving and cutting cover film provided by this utility model is equipped with an unwinding assembly and an output cutting assembly to prevent uneven tension of the cover film roll during transportation or when it stops, thus avoiding wrinkles or stretching deformation caused by uneven tension. The unwinding assembly is equipped with a magnetic powder brake to balance the tension as the cover film roll decelerates to a stop. The output cutting assembly is equipped with a vertical pressure assembly, which is program-controlled by the pressure exerted on the cover film roll by the traction roller, ensuring stable friction during transportation and maintaining tension balance. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of a laser cutting machine for engraving a cover film, which is provided by this utility model.
[0016] Figure 2 for Figure 1 The diagram shows the structure of the unwinding assembly in the laser cutting machine for engraving the cover film.
[0017] Figure 3 for Figure 1 The diagram shows the structure of the material output cutting component of the laser cutting machine for engraving the cover film.
[0018] Figure 4 for Figure 1The diagram shows the structure of the cutting component in the laser cutting machine for engraving the cover film.
[0019] Figure 5 for Figure 1 The exploded view of the cutting components of the laser cutting machine for engraving the cover film. Detailed Implementation
[0020] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.
[0021] The terminology used herein is intended to explain the embodiments and is not intended to limit and / or restrict the present invention. It should be understood that the terms "front," "rear," "left," "right," "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0022] Please see Figures 1 to 5 This is a structural schematic diagram of a cover film engraving laser cutting machine provided by this utility model. The cover film engraving laser cutting machine includes a cutting machine body 10, an unwinding assembly 20 disposed on the cutting machine body 10, two discharge cutting assemblies 30 disposed on the side of the cutting machine body 10 opposite to the unwinding assembly 20, two vacuum adsorption plates 40 disposed between the unwinding assembly 20 and the discharge cutting assembly 30, a three-axis moving device 50 disposed on the cutting machine body 10 and above the vacuum adsorption plates 40, and two laser engraving machines 60 disposed on the three-axis moving device 50. It is conceivable that the cover film engraving laser cutting machine also includes other functional modules, such as dust covers, which are technologies known to those skilled in the art and will not be described in detail here.
[0023] The main body 10 of the cutting machine is provided with a discharge area on the side near the discharge cutting component 30 for storing the cut cover film rolls.
[0024] like Figure 2As shown, the unwinding assembly 20 includes a mounting housing 21 with one end fixed on the cutting machine body 10, two magnetic powder brakes 22 disposed inside the mounting housing 21, two unwinding air expansion rollers 23 that pass through the mounting housing 21 and are connected to the magnetic powder brakes 22, and two guide rollers 24 with one end rotatably disposed on the outside of the mounting housing 21.
[0025] The mounting housing 21 is configured to mount the magnetic powder brake 22, the unwinding air expansion roller 23, and the guide roller 24 on the same side of the cutting machine body 10 to assist in feeding.
[0026] The magnetic powder brake 22 is located at the end of the mounting housing 21 away from the cutting machine body 10. The magnetic powder brake 22 is used to adjust the tension stability of the cover film roll when it moves or stops, preventing the cover film roll from deforming due to stretching or wrinkling due to loosening. The working principle of the magnetic powder brake 22 is existing technology and will not be described in detail here.
[0027] The shaft end of the unwinding air expansion roller 23 passes through the mounting housing 21 and connects to the magnetic powder brake 22. The unwinding air expansion roller 23 is sleeved inside the cover film roll. Inflating it causes its surface to expand and adhere tightly to the inside of the cover film roll. Deflating it releases the cover film roll, enabling quick assembly and disassembly. It is conceivable that the use of two unwinding air expansion rollers 23 allows the cover film engraving laser cutting machine to process cover film rolls of different diameters simultaneously. The unwinding air expansion roller 23 is a common technology and will not be described in detail here.
[0028] The guide roller 24 is positioned at both ends corresponding to the two ends of the unwinding air expansion roller 23. The guide roller 24 has retaining rings at both ends, and its other end is rotatably mounted on a mounting plate and then mounted on the cutting machine body 10 via the mounting plate. The guide roller 24 is used to guide the cover film roll into the vacuum adsorption plate 40.
[0029] like Figure 3 As shown, the two discharge cutting assemblies 30 are respectively configured to correspond to different unwinding air expansion rollers 23. Each discharge cutting assembly 30 includes a base 31, a main traction roller 32 with both ends disposed on the base 31, a driven traction roller 33 disposed above the main traction roller 32, two vertical pressing assemblies 34 that drive the driven traction roller 33 to press against the main traction roller 32, a second guide roller 35 with both ends rotatably disposed on the base 31, and a cutting assembly 36 disposed on the base 31.
[0030] The base 31 includes a base plate 311 connected to the main body 10 of the cutting machine, and two side plates 312 disposed on both sides of the base plate 311. The side plates 312 are arranged in the same direction as the two unwinding air rollers 23. The base 31 has an inclined discharge plate on the side facing the discharge area, which is used to guide the cut cover film roll to the discharge area.
[0031] The main traction roller 32 is driven by a motor to rotate on one side. The main traction roller 32 controls the transmission speed of the cover film roll and drives the engraved cover film roll to the cutting point of the cutting assembly 36.
[0032] The two ends of the traction roller 33 are movably mounted on the base 31 via the vertical pressure assembly 34. The traction roller 33, in conjunction with the main traction roller 32, clamps the cover film roll and applies pressure to it, subjecting it to stable friction to prevent the cover film roll from slipping or wrinkling during transport.
[0033] The vertical pressurizing assembly 34 includes two first slide rods 341 vertically arranged inside the base 31, a support block 342 movable on the first slide rods 341, and a first cylinder 343 disposed above the first slide rods 341. The shaft end of the driven traction roller 33 is rotatably inserted into the support block 342, and the output end of the first cylinder 343 passes through the base 31 and is fixedly connected to the support block 342. The driven traction roller 33 is driven by the first cylinder 343 to move along the first slide rods 341, thereby controlling the distance between the driven traction roller 33 and the main traction roller 32, and applying pressure to the cover film roll on the main traction roller 32. The first cylinder 343 is programmed to adjust the pressure of the driven traction roller 33 on the cover film roll, so that the frictional force on the cover film roll remains stable.
[0034] The second guide roller 35 is used to guide the cover film roll to move toward the main traction roller 32.
[0035] like Figure 4 As shown, the cutting assembly 36 includes an upper blade 361 movably mounted on the base 31, a lower blade 362 fixedly mounted on the base 31, and a sliding assembly 363 for driving the upper blade 361. The cutting assembly 36 is used to cut the cover film roll when the cover film roll stops moving.
[0036] The upper blade 361, driven by the sliding assembly 363 via the upper blade holder 3611, moves vertically on the base 31, cooperating with the lower blade 362 to cut the cover film roll. The upper blade 361 and the lower blade 362 are arranged in close contact. A handle is provided on one side of the upper blade 361, and the upper blade 361 is inclined towards the side with the handle, forming a scissor structure with the lower blade 362. Because the upper blade 361 is inclined, it can progressively cut the cover film roll, reducing the cutting impact and preventing the cover film roll from tearing.
[0037] The lower blade 362 is fixedly mounted on the base 31 via a lower blade holder 3621. Both sides of the lower blade 362 pass through the base 31 and are engaged with the base 31.
[0038] The sliding assembly 363 includes a second sliding rod 3631 vertically disposed on the outer side of the side plate 312, a slider 3632 movably disposed on the sliding rod 3631, and a second cylinder 3633 disposed on the base plate 311. The slider 3632 is fixedly connected to the upper blade holder 3611 via a connecting seat. The second cylinder 3633 drives the connecting seat, thereby driving the upper blade 361 to move along the second sliding rod 3631, so that the upper blade 361 can cut the cover film roll.
[0039] Two vacuum adsorption plates 40 are respectively arranged corresponding to the unwinding air expansion roller 23. The vacuum adsorption plates 40 are maintained under vacuum by a vacuum pump. The vacuum adsorption plates 40 are used to adsorb the cover film roll when it stops moving, so that the laser engraving machine 40 can engrave it. The vacuum adsorption plate 40 is a common technology and will not be described in detail here.
[0040] The three-axis moving device 50 is disposed above the vacuum adsorption plate 40, located between the unwinding assembly 20 and the discharge cutting assembly 30. The x-axis of the three-axis moving device 50 extends in the direction of the arrangement of the unwinding assembly 20 and the discharge cutting assembly 30, i.e., the direction of movement of the cover film roll. Its y-axis extends in the direction of the arrangement of the two vacuum adsorption plates 40, and its z-axis is perpendicular to the x and y axes, i.e., in the direction close to or away from the vacuum adsorption plates 40. This three-axis moving device 50 is a common technology and will not be described in detail here.
[0041] Two laser engraving machines 60 are respectively positioned on both sides of the z-axis of the three-axis moving device 50. The two laser engraving machines 60 move on the three-axis moving device 50 to process the cover film roll. The laser engraving machines 60 are general technology and will not be described in detail here.
[0042] Working steps: 1. Place the roll of material to be processed onto the unwinding air roller 23. The cover film roll is released from the unwinding air roller 23, passes through the guide roller 24, the vacuum adsorption plate 40, the second guide roller 35, and the output cutting assembly 30, and moves to the cutting point of the cutting assembly 36. 2. Start processing. The main traction roller 32 pulls the cover film roll towards the cutting assembly 36. When the cover film roll moves onto the vacuum adsorption plate 40, the main traction roller 32 stops working, and the magnetic powder brake 22 maintains tension balance during the deceleration of the roll to a stop. The vacuum pump starts to draw a vacuum, causing the roll to adhere to the vacuum adsorption plate 40. The laser engraving machine 60 is driven by the three-axis moving device 50 to engrave the cover film roll. After engraving is completed, the vacuum pump stops drawing a vacuum. The main traction roller 32 continues to work. 3. The main traction roller 32 pulls the engraved cover film roll between the main traction roller 32 and the driven traction roller 33. The traction roller 33 and the main traction roller 32 clamp the cover film roll. The vertical pressure assembly 34, controlled by a program, adjusts the pressure applied to the cover film roll by the traction roller 33, ensuring stable friction during transport and allowing it to be conveyed at a uniform speed to the cutting assembly 36. 4. When the cover film roll stops moving, the cutting assembly 36 cuts the engraved cover film roll. The upper blade 361, driven by the second cylinder 3633, cuts the cover film roll. The cut cover film roll exits from the discharge tray. 5. The above operation is repeated until the engraving and cutting of the entire roll of cover film is completed.
[0043] Compared with existing technologies, the laser cutting machine for engraving and cutting cover film provided by this utility model is equipped with an unwinding assembly 20 and an output cutting assembly 30 to prevent uneven tension of the cover film roll during transportation or when it stops, thus avoiding wrinkles or stretching deformation caused by uneven tension. The unwinding assembly 20 is equipped with a magnetic powder brake 22 to balance the tension as the cover film roll decelerates to a stop. The output cutting assembly 30 is equipped with a vertical pressure assembly 34, which is program-controlled by the pressure exerted on the cover film roll by the traction roller 33, ensuring stable friction on the cover film roll during transportation and maintaining tension balance.
[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.
Claims
1. A laser cutting machine for engraving and cutting a cover film, characterized in that: The laser cutting machine for engraving a cover film includes a cutting machine body, an unwinding assembly mounted on the cutting machine body, two output cutting assemblies mounted on the side of the cutting machine body opposite to the unwinding assembly, two vacuum adsorption plates mounted between the unwinding assembly and the output cutting assemblies, a three-axis moving device mounted on the cutting machine body and positioned above the vacuum adsorption plates, and two laser engraving machines mounted on the three-axis moving devices. The unwinding assembly includes a mounting housing with one end fixed to the cutting machine body, two magnetic powder brakes mounted inside the mounting housing, two unwinding air expansion rollers respectively passing through the mounting housing and connected to the magnetic powder brakes, and two guide rollers with one end rotatably mounted on the outside of the mounting housing. The other end of each guide roller is rotatably mounted on a mounting plate and mounted on the cutting machine body via the mounting plate. On the main body of the cutter, two discharge cutting components are respectively arranged corresponding to different unwinding air expansion rollers. Each discharge cutting component includes a base arranged on the main body of the cutter, a main traction roller with both ends arranged on the base, a secondary traction roller arranged above the main traction roller, two vertical pressure components that drive the secondary traction roller to press against the main traction roller, and a cutting component arranged on the base. The main traction roller is driven by a motor to rotate. The two ends of the secondary traction roller are movably arranged on the base through the vertical pressure components. The secondary traction roller cooperates with the main traction roller to clamp the cover film roll. The cutting component cuts the cover film roll when it stops moving. Two vacuum adsorption plates are respectively arranged corresponding to the unwinding air expansion rollers. Two laser engraving machines move on the three-axis moving device to process the cover film roll.
2. The laser cutting machine for engraving and cutting cover films as described in claim 1, characterized in that: The guide roller is provided with retaining rings at both ends, and the discharge cutting assembly also includes a second guide roller that is rotatably mounted on the base at both ends.
3. The laser cutting machine for engraving and cutting cover films as described in claim 1, characterized in that: The base includes a base plate and two side plates disposed on both sides of the base plate, the side plates being arranged in the same direction as the two unwinding air rollers.
4. The laser cutting machine for engraving and cutting cover films as described in claim 1, characterized in that: The main body of the cutting machine has a discharge area on the side near the discharge cutting component, and the base has an inclined discharge plate on the side away from the unwinding component.
5. The laser cutting machine for engraving and cutting cover films as described in claim 1, characterized in that: The vertical pressurization assembly includes two first slide rods vertically arranged inside the base, a support block movable on the first slide rods, and a first cylinder arranged above the first slide rods. The shaft end of the traction roller is rotatably inserted into the support block. The output end of the first cylinder passes through the base and is fixedly connected to the support block. The traction roller is driven by the first cylinder to move along the first slide rods.
6. The laser cutting machine for engraving and cutting cover films as described in claim 3, characterized in that: The cutting assembly includes an upper blade movably mounted on the base, a lower blade fixedly mounted on the base, and a sliding assembly for driving the upper blade. The upper blade is driven by the sliding assembly to move vertically on the base via an upper blade holder. The lower blade is fixedly mounted on the base via a lower blade holder, and its two sides pass through the base and engage with it. The sliding assembly includes a second slide rod vertically mounted on the outside of the side plate, a slider movably mounted on the slide rod, and a second cylinder mounted on the base plate. The slider is fixedly connected to the upper blade holder via a connecting seat, and the second cylinder drives the connecting seat.
7. The laser cutting machine for engraving and cutting cover films as described in claim 1, characterized in that: The three-axis moving device is positioned above the vacuum adsorption plate, between the unwinding assembly and the discharge cutting assembly. The x-axis of the three-axis moving device extends in the direction of the arrangement of the unwinding assembly and the discharge cutting assembly, the y-axis extends in the direction of the arrangement of the two vacuum adsorption plates, and the z-axis is perpendicular to the x and y axes.
8. The laser cutting machine for engraving cover film as described in claim 1, characterized in that: The two laser engraving machines are respectively positioned on both sides of the z-axis of the three-axis moving device.