Nonwoven fabric cutting device

Abstract

The utility model discloses a non - woven fabric cutting device, include: frame, vacuum bed, vacuum bed set up in the frame has the multiple vacuum holes of equal distribution, and multiple vacuum holes are communicated with the vacuumizing device through a plurality of first pipe, pay off frame, pay off frame with the frame is connected, and it sets up in one end of vacuum bed, and pay off frame is used to bear multiple non - woven fabric roll, cutting assembly, cutting assembly is located in the other end of vacuum bed, and it includes transverse linear mechanism, the slide that is driven translation by transverse linear mechanism, be provided with screw rod motor on the slide, and screw rod motor drives a slide plate to go up and down, be provided with a rotatable circular knife on the slide plate, still be provided with carbon dioxide laser emitter on the slide. The utility model can realize the cooperation between the flat adsorption of coiled material, the local exhaust of cutting end area and the follow-up control of execution spare.

Description

Technical Field

[0001] This utility model relates to the field of cutting devices, and in particular to a nonwoven fabric cutting device. Background Technology

[0002] Nonwoven fabrics are thin, porous, and prone to arching in rolls. Existing roll-cutting equipment mostly relies on mechanical pressing on a worktable for positioning, but this often suffers from several drawbacks: First, the worktable lacks suction, making the ends and edges more susceptible to lifting or wrinkling; second, the follow-up pressing mechanism is insufficient, and variations in material thickness and slight table undulations cause instability in downward pressure and cutter stroke, affecting dimensional consistency and edge quality; third, the flattening during multi-roll unwinding and chip removal at the cutting end are not integrated into a single system, leading to frequent machine adjustments and poor efficiency and maintainability. Therefore, the industry needs a comprehensive solution that integrates roll flattening and suction, localized chip removal at the cutting end, and follow-up control of the actuators. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nonwoven fabric cutting device.

[0004] To achieve the above objectives, the following solution is adopted:

[0005] A nonwoven fabric cutting device, the device comprising:

[0006] frame;

[0007] A vacuum bed, which is mounted on the frame, has a plurality of equally distributed vacuum holes, and the plurality of vacuum holes are connected to a vacuum pumping device through a plurality of first pipes;

[0008] An unwinding frame is connected to the machine frame and is located at one end of the vacuum bed. The unwinding frame is used to carry multiple rolls of nonwoven fabric.

[0009] The cutting assembly, located at the other end of the vacuum bed, includes a transverse linear mechanism, a slide block driven to translate by the transverse linear mechanism, a lead screw motor mounted on the slide block, the lead screw motor driving a sliding plate to rise and fall, a freely rotatable circular blade mounted on the sliding plate, and a carbon dioxide laser emitter mounted on the slide block.

[0010] Furthermore, the circular cutter is rotatably connected to a connecting rod, one end of which passes through the first guide block and the second guide block respectively. A limit block is provided on the connecting rod, and the limit block is located between the first guide block and the second guide block.

[0011] Furthermore, the skateboard is also provided with a first bracket and a second bracket, which respectively fix the first guide block and the second guide block, and a spring is provided between the first guide block and the second bracket.

[0012] Furthermore, the cutting assembly is located within a downward-opening housing, which is connected to a second pipe, which is connected to a vacuum device.

[0013] Furthermore, the device also includes a gas cylinder that is connected to the carbon dioxide laser emitter.

[0014] By adopting the above solution, the beneficial effects of this utility model are:

[0015] This device constructs a dual negative pressure system of uniform adsorption and localized extraction on the same frame: the vacuum bed uses evenly distributed vacuum holes connected in parallel to the vacuum pumping device via multiple first pipes, significantly balancing the negative pressure across the table surface and stabilizing the flattening of the roll material; the cutting end is equipped with a downward-opening shell connected independently to the vacuum pumping device via a second pipe, forming a localized negative pressure hood near the processing point, which can immediately remove fly filaments, debris, and smoke, reducing contamination of the actuators and improving cut cleanliness. The cutting assembly is driven by a transverse linear mechanism to move the slide, and a lead screw motor achieves precise Z-axis lifting; the circular blade, through a follow-up and stroke limiting mechanism composed of connecting rods, guide blocks, springs, and limit blocks, can automatically compensate for material thickness and slight table surface undulations, maintaining constant force and reducing burrs and dimensional drift. A carbon dioxide laser emitter is also installed, which, in conjunction with the circular blade, can adapt to nonwoven fabrics with different materials and cutting requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the nonwoven fabric cutting device of this utility model;

[0017] Figure 2 This is a schematic diagram of the nonwoven fabric cutting device of this utility model after omitting the shell and vacuum bed;

[0018] Figure 3 This is a schematic diagram of the cutting component of this utility model;

[0019] Figure 4 This is a partial structural diagram of the cutting component of this utility model.

[0020] The following are explanations of the labels in the attached diagram:

[0021] 1. Frame; 2. Vacuum bed; 3. First pipe; 4. Unwinding rack; 5. Cutting assembly; 51. Transverse linear mechanism; 52. Slide; 53. Lead screw motor; 54. Slide plate; 55. Circular knife; 56. Carbon dioxide laser emitter; 57. Connecting rod; 571. Limiting block; 58. First guide block; 59. Second guide block; 510. First support; 511. Second support; 512. Spring; 6. Housing; 7. Second pipe; 8. Gas tank. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1 to 4 As shown, this utility model provides a nonwoven fabric cutting device, comprising:

[0024] Rack 1;

[0025] Vacuum bed 2 is mounted on frame 1 and has multiple equally distributed vacuum holes. The multiple vacuum holes are connected to a vacuum pumping device through multiple first pipes 3.

[0026] Unwinding frame 4 is connected to frame 1 and is located at one end of vacuum bed 2. Unwinding frame 4 is used to carry multiple nonwoven fabric rolls.

[0027] The cutting assembly 5 is located at the other end of the vacuum bed 2. It includes a transverse linear mechanism 51 and a slide 52 driven by the transverse linear mechanism 51 to move. A lead screw motor 53 is installed on the slide 52. The lead screw motor 53 drives a slide plate 54 to rise and fall. A freely rotatable circular knife 55 is installed on the slide plate 54. A carbon dioxide laser emitter 56 is also installed on the slide 52.

[0028] The circular cutter 55 is rotatably connected to a connecting rod 57. One end of the connecting rod 57 passes through the first guide block 58 and the second guide block 59 respectively. A limit block 571 is provided on the connecting rod 57, and the limit block 571 is located between the first guide block 58 and the second guide block 59. Based on the first guide block 58, the second guide block 59 and the limit block 571, the upper and lower limits for the lifting and lowering of the connecting rod 57 are formed.

[0029] The slide plate 54 is also equipped with a first bracket 510 and a second bracket 511. The first bracket 510 and the second bracket 511 fix the first guide block 58 and the second guide block 59, respectively. A spring 512 is provided between the first guide block 58 and the second bracket 511. Based on the spring 512, a springback is formed to prevent the circular knife 55 from pressing down and cutting, which avoids damage to the vacuum bed 2 and the circular knife 55 itself due to excessive pressure, and also avoids incomplete cutting due to insufficient pressure.

[0030] The cutting assembly 5 is located within a downward-opening housing 6, which is connected to a second conduit 7, which in turn is connected to a vacuum device. The second conduit 7 is used to extract debris generated during the cutting process, particularly fumes that may be produced by the carbon dioxide laser emitter 56 during cutting.

[0031] The device also includes a gas tank 8, which is connected to a carbon dioxide laser emitter 56.

[0032] Working principle:

[0033] When the device is started, the vacuum pump works: on the one hand, the negative pressure is evenly distributed to the uniformly distributed vacuum holes of the vacuum bed 2 through multiple first pipes 3, forming a surface adsorption force on the nonwoven fabric roll, achieving flattening and positioning; on the other hand, the downward-opening shell 6 located at the cutting end is connected to the same vacuum pump through the second pipe 7, forming a near-field local negative pressure in the cutting area, which immediately captures and guides away the flying fibers, debris and smoke generated during processing. Multiple rolls of material on the unwinding rack 4 are unwound and spread onto the surface of the vacuum bed 2 as needed.

[0034] The cutting assembly 5 moves laterally above the material along the transverse linear mechanism 51; when it reaches the predetermined trajectory, the lead screw motor 53 drives the slide plate 54 to precisely lift and lower in the Z direction to perform cutting / lifting. The connecting rod 57 passes through the first and second guide blocks 59 and forms a follow-up and stroke limiting mechanism by the spring 512 and the limiting block 571: the spring 512 provides a constant contact force to automatically compensate for the thickness of the material and the slight undulations of the table surface, and the limiting block 571 limits the maximum indentation to avoid overcutting and table surface wear. The carbon dioxide laser emitter 56 mounted on the slide 52 is connected to the gas tank 8 and can provide an auxiliary gas passage to the processing point.

[0035] Driven by CNC paths or process commands, the device completes the cycle of positioning, cutting, cutting along the trajectory, lifting, shifting, and cutting the next segment. The entire process is ensured by a synergistic mechanism of surface adsorption positioning, local extraction and purification, and constant force cutting, which guarantees material stability, clean cuts, and dimensional consistency, while reducing contamination and wear on the table and actuators.

[0036] This device constructs a dual negative pressure system of uniform adsorption and localized extraction on the same frame 1: the vacuum bed 2 uses evenly distributed vacuum holes and is connected in parallel to the vacuum pumping device via multiple first pipes 3, significantly balancing the negative pressure at various points on the table and stabilizing the flattening of the roll material; the cutting end is equipped with a downward-opening shell 6 and is independently connected to the vacuum pumping device via a second pipe 7, forming a localized negative pressure hood near the processing point, which can immediately remove fly filaments, debris, and smoke, reducing contamination of the actuators and improving the cleanliness of the cut. The cutting assembly 5 is driven by a transverse linear mechanism 51 to move the slide 52, and the lead screw motor 53 achieves precise Z-axis lifting; the circular blade 55, through a follow-up and stroke limiting mechanism composed of a connecting rod 57, guide block, spring 512, and limit block 571, can automatically compensate for material thickness and slight undulations of the table, maintain constant force, and reduce burrs and dimensional drift. A carbon dioxide laser emitter 56 is also provided, which, in conjunction with the circular blade 55, can adapt to nonwoven fabrics with different materials and cutting requirements.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A nonwoven fabric cutting device, characterized in that, The device includes: frame; A vacuum bed, which is mounted on the frame, has a plurality of equally distributed vacuum holes, and the plurality of vacuum holes are connected to a vacuum pumping device through a plurality of first pipes; An unwinding frame is connected to the machine frame and is located at one end of the vacuum bed. The unwinding frame is used to carry multiple rolls of nonwoven fabric. The cutting assembly, located at the other end of the vacuum bed, includes a transverse linear mechanism, a slide block driven to translate by the transverse linear mechanism, a lead screw motor mounted on the slide block, the lead screw motor driving a sliding plate to rise and fall, a freely rotatable circular blade mounted on the sliding plate, and a carbon dioxide laser emitter mounted on the slide block.

2. The nonwoven fabric cutting device according to claim 1, characterized in that, The circular cutter is rotatably connected to a connecting rod, one end of which passes through a first guide block and a second guide block respectively. A limit block is provided on the connecting rod, and the limit block is located between the first guide block and the second guide block.

3. The nonwoven fabric cutting device according to claim 2, characterized in that, The skateboard is also provided with a first bracket and a second bracket, which fix the first guide block and the second guide block respectively, and a spring is provided between the first guide block and the second bracket.

4. The nonwoven fabric cutting device according to claim 1, characterized in that, The cutting assembly is located inside a downward-opening housing, which is connected to a second pipe, which is connected to a vacuum pumping device.

5. The nonwoven fabric cutting device according to claim 1, characterized in that, The device also includes a gas tank, which is connected to the carbon dioxide laser emitter.

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