Sheet film feeding device for laser cutting machine

Abstract

The utility model discloses a sheet film feeding device for a laser cutting machine, and belongs to the technical field of sheet film processing. The device comprises a clamping assembly and a deflection assembly, the clamping assembly comprises a movable supporting frame body and a plurality of adsorption units, the multiple adsorption units are fixedly connected with the supporting frame body, and the adsorption units can adsorb or release a sheet film through negative pressure; the deflection assembly comprises a rotatable deflection unit and a first suction cup, the two ends of the deflection unit are connected with the first suction cup and the supporting frame body respectively, the deflection unit can drive the first suction cup to rotate relative to the sheet film to form an adsorption position and a deflection position, the first suction cup is arranged in parallel relative to the sheet film at the adsorption position, and the first suction cup is arranged in parallel relative to the sheet film at the deflection position. The first suction cups are obliquely arranged relative to the sheet films, and the first suction cups can suck the edges of the sheet films and deflect the edges of the sheet films so that the adsorbed sheet films can be separated. According to the utility model, sheet films can be prevented from being adhered together to enter a cutting process.

Description

Technical Field

[0001] This utility model relates to the field of sheet film processing technology, and in particular to a sheet film feeding device for a laser cutting machine. Background Technology

[0002] Sheet films are widely used in mobile phones, computers, LCD monitors, digital cameras, LCD backlights and other fields.

[0003] Existing sheet films need to be cut into predetermined shapes and sizes using a laser cutter for subsequent assembly and use.

[0004] Existing sheet films are often stacked together. When using a feeding device to fix and transport the sheet films, multiple layers of sheet films may stick together, which seriously affects subsequent cutting and processing. Utility Model Content

[0005] In view of this, it is necessary to provide a sheet film feeding device for laser cutting machines to solve the problem of adsorption and adhesion of multilayer films when clamping sheet films.

[0006] This utility model provides a sheet film feeding device for a laser cutting machine, comprising:

[0007] A clamping assembly includes a movable support frame and multiple adsorption units, wherein the multiple adsorption units are fixedly connected to the support frame and the adsorption units are capable of adsorbing or releasing the sheet film using negative pressure.

[0008] A deflection assembly includes a rotatable deflection unit and a first suction cup. The two ends of the deflection unit are connected to the first suction cup and the support frame, respectively. The deflection unit can drive the first suction cup to rotate relative to the sheet film to form an adsorption position and a deflection position. In the adsorption position, the first suction cup is arranged parallel to the sheet film. In the deflection position, the first suction cup is arranged at an angle relative to the sheet film. The first suction cup can attract the edge of the sheet film and deflect the edge of the sheet film to separate the sheets film that are adsorbed together.

[0009] Furthermore, the deflection unit includes a clamp-type transmission structure and a driving component. The clamp-type transmission structure is fixedly connected to the support frame. The input end of the clamp-type transmission structure is connected to the driving component, and the output end of the clamp-type transmission structure is connected to the first suction cup. The driving component can drive the first suction cup to deflect relatively through the clamp-type transmission structure.

[0010] Furthermore, the driving component includes a fixed part and a telescopic part. The fixed part is hinged to the supported frame, one end of the telescopic part is movably inserted into the fixed part, and the other end of the telescopic part is hinged to the input end of the clamp-type transmission structure.

[0011] Furthermore, the driving component is a cylinder or an electric push rod.

[0012] Furthermore, the adsorption unit includes a second suction cup, which is fixedly connected to the support frame and is capable of adsorbing or releasing the sheet film.

[0013] Furthermore, the working ends of the second suction cups of the plurality of adsorption units are located on the same horizontal plane.

[0014] Furthermore, multiple second suction cups are arranged relative to the sheet film array.

[0015] Furthermore, it also includes an air intake system, which includes a first air intake unit. The first air intake unit includes multiple first suction tubes for drawing air, and the first suction tubes are arranged in a one-to-one correspondence with the second suction cup and are interconnected.

[0016] Furthermore, the air intake system also includes a second air intake unit, which includes a second suction tube for drawing air, and the second suction tube is connected to the first suction cup.

[0017] Furthermore, it also includes a vibration assembly, which includes a vibrator that is fixedly connected to the support frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) This utility model discloses a sheet film feeding device for a laser cutting machine, which includes a clamping assembly comprising a movable support frame and multiple adsorption units. The support frame is connected to a multi-axis moving mechanism, allowing it to move freely in three-dimensional space as needed, clamping the sheet film and transporting it to a preset position. Multiple adsorption units are fixedly connected to the support frame, and the adsorption units can adsorb or release the sheet film using a negative pressure method (i.e., vacuum adsorption). Negative pressure adsorption allows for precise control of the adsorption force, ensuring that only one layer of sheet film is adsorbed at a time. When negative pressure is applied, the adsorption units firmly adsorb the sheet film onto the surface, facilitating the movement of the sheet film to the designated position on the laser cutting machine. When the negative pressure is released, the adsorption units release the sheet film, completing the feeding or unloading process.

[0020] (2) This utility model discloses a sheet film feeding device for a laser cutting machine, which includes a deflection assembly. The deflection assembly comprises a rotatable deflection unit and a first suction cup. The two ends of the deflection unit are connected to the first suction cup and a support frame, respectively. The deflection unit can rotate to drive the first suction cup connected to it, switching between an adsorption position and a deflection position. In the adsorption position, the first suction cup is placed parallel to the sheet film, and the suction cup is in full contact with the surface of the sheet film, allowing for negative pressure adsorption of the edge of the sheet film. In the deflection position, the first suction cup is tilted relative to the sheet film. After the first suction cup adsorbs the edge of the sheet film, the deflection unit rotates the first suction cup, slightly lifting or deflecting the edge of the sheet film. This deflection action effectively separates the edges of multiple sheets of film one by one, thus preventing the sheets from sticking together. This deflection separation mode protects the sheet film from damage and also allows for smoother separation of multiple sheets of film. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the deflection component in this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0025] In the figure, 100 is the clamping assembly; 110 is the support frame; 111 is the connecting frame; 120 is the adsorption unit; 121 is the second suction cup; 200 is the deflection assembly; 210 is the deflection unit; 211 is the clamp-type transmission structure; 212 is the driving component; 212a is the fixing part; 212b is the telescopic part; 220 is the first suction cup; 300 is the suction system; 310 is the first suction unit; 311 is the first suction tube; 320 is the second suction unit; 321 is the second suction tube; 400 is the vibration assembly; 410 is the vibrator; and 500 is the sheet film. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0027] This embodiment discloses a sheet film feeding device for a laser cutting machine, relating to the field of sheet film processing technology. A foldable and rotatable deflection component 200 is provided on one side of the clamping component 100. The deflection component 200 can adsorb the edge of the sheet film 500 and drive the edge of the sheet film 500 to rotate and deflect, thereby breaking the adhesive structure between adjacent sheet films 500 and promoting the separation of the uppermost sheet film 500 in contact with the clamping component 100 from other sheet films 500, which facilitates the subsequent cutting and processing of the single-layer sheet film 500 by the laser cutting machine.

[0028] Please see Figures 1 to 3 This embodiment provides a sheet film feeding device for a laser cutting machine, including a clamping assembly 100 and a deflection assembly 200. The clamping assembly 100 can clamp the uppermost sheet film 500, and the deflection assembly 200 can fold the edge of the uppermost sheet film 500, thereby breaking the adhesive structure between adjacent sheet films 500 and promoting the separation of the uppermost sheet film 500 in contact with the clamping assembly 100 from other sheet films 500, which is helpful for the subsequent processing of the sheet film 500.

[0029] The clamping assembly 100 includes a movable support frame 110 and multiple adsorption units 120. The support frame 110 is connected to a multi-axis moving mechanism. The support frame 110 can move freely in three-dimensional space as needed to clamp the sheet film 500 and transport it to a preset position.

[0030] Multiple adsorption units 120 are fixedly connected to the support frame 110. The adsorption units 120 can adsorb or release the sheet film 500 using negative pressure (i.e., vacuum adsorption). Negative pressure adsorption allows for precise control of the adsorption force, ensuring that only one layer of sheet film 500 is adsorbed at a time. When negative pressure is applied, the adsorption units 120 firmly adsorb the sheet film 500 onto the surface, facilitating the movement of the sheet film 500 to the designated position on the laser cutting machine. When the negative pressure is released, the adsorption units 120 release the sheet film 500, completing the loading or unloading process.

[0031] The deflection assembly 200 includes a rotatable deflection unit 210 and a first suction cup 220. The two ends of the deflection unit 210 are connected to the first suction cup 220 and the support frame 110, respectively. The deflection unit 210 can rotate to drive the first suction cup 220 connected to it, switching between an adsorption position and a deflection position. In the adsorption position, the first suction cup 220 is placed parallel to the sheet film 500, and the suction cup is in full contact with the surface of the sheet film 500, allowing for negative pressure adsorption of the edges of the sheet film 500. In the deflection position, the first suction cup 220 is tilted relative to the sheet film 500. After the first suction cup 220 adsorbs the edges of the sheet film 500, the deflection unit 210 rotates the first suction cup 220, slightly lifting or deflecting the edges of the sheet film 500. This deflection action effectively separates the edges of the multi-layer sheet film 500 one by one, thus preventing them from sticking together. The deflection separation mode can protect the sheet film 500 from damage and also separate multiple sheet films 500 more smoothly.

[0032] During use, the clamping assembly 100 uses negative pressure to adsorb the main body area of ​​the sheet film 500. Simultaneously, the first suction cup 220 of the deflection assembly 200 adsorbs the edge of the sheet film 500 and separates it through a deflection action. Once the first layer of sheet film 500 is successfully separated from the next layer, the clamping assembly 100 can complete the loading process, transferring the single-layer sheet film 500 to the laser cutting machine for subsequent processing.

[0033] In some embodiments, please refer to Figure 1 and Figure 2 The deflection unit 210 includes a clamp-type transmission structure 211 and a drive component 212. The clamp-type transmission structure 211 is fixedly connected to the support frame 110 and is connected to the drive component 212 through its input end, enabling it to precisely transmit the power output of the drive component 212. The clamp-type transmission structure 211 provides high mechanical precision, allowing the deflection angle of the first suction cup 220 to be precisely controlled. The clamp-type transmission structure 211 has the advantages of torque amplification and multi-point control, enabling fine-tuning of the suction cup angle and position, thereby making the separation process of the sheet film 500 more stable and controllable.

[0034] Compared to other transmission methods (such as gears and sliding structures), the clamp-type transmission structure 211 has higher structural stability. This is because the clamp-type transmission relies on a two-way clamping structure, which provides greater stability during motion transmission and reduces swaying or instability during the transmission process. Its design ensures that the path and angle of each deflection motion are consistent, improving the repeatability of equipment operation.

[0035] In the specific implementation process, the clamp transmission structure 211 includes a clamping arm and a rotating shaft. The clamping arm is one of the core components of the clamp transmission structure 211, similar to the arm in pliers. The middle part of the clamping arm is hinged to the support frame 110 through the rotating shaft. One end of the clamping arm is connected to the driving member 212 as the input end, and the other end of the clamping arm is connected to the first suction cup 220 as the output end. The driving member 212 can drive the clamping arm to rotate relative to each other, so that the first suction cup 220 rotates relative to each other between the adsorption position and the deflection position.

[0036] It should be noted that the support frame 110 includes a connecting frame 111, a rotating shaft is fixedly connected to the connecting frame 111, a drive component 212 is hinged to the connecting frame 111, and the middle part of the clamping arm is connected to the connecting frame 111 through the rotating shaft, and the clamping arm can rotate freely relative to the rotating shaft.

[0037] In some embodiments, please refer to Figure 2 The driving component 212 includes a fixed part 212a and a telescopic part 212b. The fixed part 212a is hinged to the supported frame 110. One end of the telescopic part 212b is movably inserted into the fixed part 212a, and the other end of the telescopic part 212b is hinged to the input end of the clamp-type transmission structure 211. The telescopic part 212b can be movably inserted into the fixed part 212a, and the driving component 212 can provide linear telescopic movement. By controlling the length change of the telescopic part 212b, the input angle or displacement of the clamp-type transmission structure 211 can be precisely adjusted, thereby achieving precise deflection control of the suction cup.

[0038] Compared to pure rotary drive, linear telescopic drive is more suitable for applications requiring controlled motion amplitude. By adjusting the telescopic amplitude, the deflection angle of the suction cup can be finely adjusted, ensuring a more precise separation process of the sheet film 500 and avoiding damage to the sheet film 500 caused by rough separation.

[0039] It should be noted that the drive component 212 is either a cylinder or an electric actuator. Both cylinders and electric actuators are typical linear actuators, capable of providing precise and stable linear motion. This linear motion can be directly used to control the clamping, opening, or deflection actions of the clamp-type transmission structure 211, thereby achieving edge separation of the sheet film 500.

[0040] By adjusting the air pressure of the cylinder or the stroke of the electric push rod, the deflection angle and adsorption force of the suction cup can be precisely controlled, ensuring the accuracy of each separation action, thereby reducing the risk of damage to the sheet film 500, especially when handling thinner or more fragile film materials.

[0041] As an alternative implementation: the deflection unit 210 can be a rotary cylinder structure.

[0042] The rotary cylinder is driven by compressed air, which rotates the cylinder output shaft at a certain angle. A suction cup can be mounted on the output shaft, and the angle of the suction cup can be controlled by the rotary cylinder to achieve the deflection action.

[0043] As an alternative implementation: the deflection unit 210 can be an electrically powered servo rotation mechanism.

[0044] The electric servo system drives the rotating shaft through a servo motor. The suction cup is fixed on the rotating shaft. The servo motor is precisely adjusted by programming to achieve the deflection action of the suction cup relative to the sheet film 500.

[0045] As an alternative implementation: the deflection unit 210 can be a four-bar linkage.

[0046] The linear or rotational motion of the drive component 212 is converted into angular deflection of the suction cup through the linkage motion of the four-bar linkage. The four-bar linkage can achieve complex motion trajectories.

[0047] In some embodiments, please refer to Figure 1 and Figure 3 The adsorption unit 120 includes a second suction cup 121, which is fixedly connected to the support frame 110. The second suction cup 121 can adsorb or release the sheet film 500. The second suction cup 121 uses negative pressure adsorption to firmly grip the sheet film 500, ensuring that the sheet film 500 will not move or fall off during handling. Negative pressure adsorption is more stable than other gripping methods (such as mechanical clamping) and is particularly suitable for handling soft and fragile materials, such as films and optical sheets.

[0048] As a further embodiment, the working ends of the second suction cups 121 of the multiple adsorption units 120 are located on the same horizontal plane. When the working ends of the multiple second suction cups 121 are located on the same horizontal plane, the adsorption force of each suction cup on the sheet film 500 can be evenly distributed, and there will be no situation where some suction cups have strong adsorption and some suction cups have weak adsorption. This uniform adsorption can ensure that the sheet film 500 is subjected to balanced forces during transportation, and avoid the sheet film 500 bending, deforming or being damaged due to uneven forces.

[0049] In some embodiments, the working ends of the second suction cups 121 of the multiple adsorption units 120 are located on the same horizontal plane, allowing all suction cups to contact the sheet film 500 simultaneously. The adsorption force of each suction cup on the sheet film 500 can be evenly distributed, preventing some suction cups from adsorbing more strongly than others, thus ensuring that the entire sheet film 500 is adsorbed synchronously and avoiding the risk of warping or slippage. If the suction cups are not on the same horizontal plane, some suction cups may contact the sheet film 500 first, resulting in uneven adsorption, and the sheet film 500 may warp or become unstable on one side.

[0050] As a further implementation, a plurality of second suction cups 121 are arranged in an array relative to the sheet film 500, and can be evenly distributed on various areas of the sheet film 500. When adsorption occurs, each suction cup can act on a different part of the sheet film 500, so that the sheet film 500 is evenly stressed on the entire surface, thereby avoiding deformation, damage or tearing of the film material caused by excessive local stress.

[0051] Meanwhile, the array-style suction cup layout can cover a larger area of ​​sheet film 500, making it particularly suitable for large-sized thin film materials. Through the distributed adsorption of multiple suction cups, the large-area sheet film 500 can receive sufficient support, preventing sagging or bending in the middle area of ​​the material due to lack of adsorption support.

[0052] In some embodiments, please refer to Figure 1 A sheet film feeding device for a laser cutting machine also includes an air suction system 300. The air suction system 300 includes a first air suction unit 310, which comprises multiple first suction pipes 311 for drawing air. Each suction pipe is correspondingly connected to a second suction cup 121. The connection between the suction pipes of the first air suction unit 310 and the second suction cup 121 ensures that air is effectively extracted from between the sheet film 500 and the suction cup during negative pressure adsorption, thereby creating a stable vacuum environment between the suction cup and the film. This stable negative pressure condition improves the suction force of the suction cup on the sheet film 500, preventing adsorption failure or weak adsorption due to air leakage or insufficient negative pressure.

[0053] Each suction tube in the suction system 300 corresponds to a suction cup, enabling independent adsorption and release control of different areas of the sheet film 500. For example, when it is necessary to adsorb a specific area or partially release the sheet film 500, the system can control a specific suction cup to draw or release air through its corresponding suction tube, thereby achieving precise adsorption and release operations.

[0054] As a further embodiment, the suction system 300 also includes a second suction unit 320, which includes a second suction tube 321 for drawing air, and the second suction tube 321 is connected to the first suction cup 220. The connection between the second suction unit 320 and the first suction cup 220 provides an independent negative pressure source for the first suction cup 220. The first suction cup 220 can more stably and quickly adsorb the sheet film 500 through the second suction tube 321, especially when it is necessary to separate multi-layered bonded sheet films 500, the adsorption force of the first suction cup 220 can effectively lift the edges of the film layer. The second suction unit 320 is connected to the first suction cup 220 through a separate suction tube, enabling independent control of the adsorption and release of the edge region of the sheet film 500. This precise control allows the system to fine-tune the position or angle of the film by adsorbing the edges during handling or positioning, ensuring accurate alignment and placement of the film.

[0055] In some embodiments, please refer to Figure 3 A sheet film feeding device for a laser cutting machine also includes a vibration assembly 400, which includes a vibrator 410 fixedly connected to a support frame 110. Due to static electricity, humidity, or material properties, sheet films 500 tend to stick together when stacked, affecting subsequent feeding and processing operations. The vibration of the vibrator 410 applies small-amplitude mechanical vibration to the sheet films 500, thereby reducing or eliminating adhesion between layers. The transmission of vibration causes relative displacement between the sheet films 500, disrupting the electrostatic or adhesive forces between them.

[0056] Meanwhile, the vibration of vibrator 410 reduces the tight adhesion between the sheet films 500, lowering the possibility of multiple layers of film being simultaneously adsorbed during the adsorption process. Appropriate vibration ensures that only the topmost layer of film is effectively adsorbed during the adsorption operation.

[0057] Workflow: First, before the sheet film 500 is loaded, the vibration assembly 400 is started. The vibrator 410 applies moderate vibration to the sheet film 500 through the support frame 110, causing the stacked sheet films 500 to gradually separate, reducing interlayer adhesion.

[0058] Then, the suction system 300 is activated. The second suction cup 121 and the first suction cup 220 adsorb the uppermost sheet film 500 through the negative pressure of the suction system 300.

[0059] Next, the deflection unit 210 drives the first suction cup 220 to rotate to the adsorption position, adsorbing the edge of the sheet film 500. Immediately afterwards, the deflection unit 210 drives the first suction cup 220 to rotate to the deflection position, separating the uppermost sheet film 500 from other films.

[0060] Finally, after the adsorption system successfully adsorbs the single-layer sheet film 500, the sheet film 500 is safely lifted by the feeding device. At this time, the support frame 110 will move the adsorbed sheet film 500 to the working area of ​​the laser cutting machine, usually through a robotic arm or guide rail system.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A sheet film feeding device for a laser cutting machine, characterized in that, include: A clamping assembly includes a movable support frame and multiple adsorption units, wherein the multiple adsorption units are fixedly connected to the support frame and the adsorption units are capable of adsorbing or releasing the sheet film using negative pressure. A deflection assembly includes a rotatable deflection unit and a first suction cup. The two ends of the deflection unit are connected to the first suction cup and the support frame, respectively. The deflection unit can drive the first suction cup to rotate relative to the sheet film to form an adsorption position and a deflection position. In the adsorption position, the first suction cup is arranged parallel to the sheet film. In the deflection position, the first suction cup is arranged at an angle relative to the sheet film. The first suction cup can attract the edge of the sheet film and deflect the edge of the sheet film to separate the sheets film that are adsorbed together.

2. The sheet / film feeding device for a laser cutting machine according to claim 1, characterized in that, The deflection unit includes a clamp-type transmission structure and a driving component. The clamp-type transmission structure is fixedly connected to the support frame. The input end of the clamp-type transmission structure is connected to the driving component, and the output end of the clamp-type transmission structure is connected to the first suction cup. The driving component can drive the first suction cup to deflect relatively through the clamp-type transmission structure.

3. A sheet / film feeding device for a laser cutting machine according to claim 2, characterized in that, The driving component includes a fixed part and a telescopic part. The fixed part is hinged to the supported frame. One end of the telescopic part is movably inserted into the fixed part, and the other end of the telescopic part is hinged to the input end of the clamp-type transmission structure.

4. A sheet film feeding device for a laser cutting machine according to claim 3, characterized in that, The driving component is a cylinder or an electric push rod.

5. A sheet film feeding device for a laser cutting machine according to claim 1, characterized in that, The adsorption unit includes a second suction cup, which is fixedly connected to the support frame. The second suction cup can adsorb or release the sheet film.

6. A sheet film feeding device for a laser cutting machine according to claim 5, characterized in that, The working ends of the second suction cups of the multiple adsorption units are located on the same horizontal plane.

7. A sheet film feeding device for a laser cutting machine according to claim 6, characterized in that, Multiple second suction cups are arranged relative to the sheet film array.

8. A sheet / film feeding device for a laser cutting machine according to claim 5, characterized in that, It also includes an air intake system, which includes a first air intake unit. The first air intake unit includes multiple first suction tubes for drawing air, and the first suction tubes are arranged in a one-to-one correspondence with the second suction cup and are interconnected.

9. A sheet film feeding device for a laser cutting machine according to claim 8, characterized in that, The air intake system further includes a second air intake unit, which includes a second suction tube for drawing air, and the second suction tube is connected to the first suction cup.

10. A sheet film feeding device for a laser cutting machine according to claim 1, characterized in that, It also includes a vibration assembly, which includes a vibrator that is fixedly connected to the support frame.

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