Fabric layering cutting machine

Abstract

The utility model discloses a kind of fabric layering cutting machines, including workbench, mobile bridge, machine head, rotary cutter head and blade. Workbench is provided with the flexible support surface formed by the elastic support strip of several vertical array dense, and the negative pressure space of connecting negative pressure generator is formed between elastic support strip and the avoidance seam of blade. The utility model is through the synergistic effect of flexible support surface and negative pressure adsorption, can firmly fix 10-30 layers of cloth, effectively prevent lower layer cloth displacement and cutting incomplete in the process of cutting, ensure that cutting accuracy, avoid secondary processing and laser heat fusion damage. In addition, workbench can adopt the modular design of outer frame and detachable support module, easy to maintain;Negative pressure generator can also be through the second air hole on outer frame and adsorption fixed film on cloth upper surface, further improve fixing effect.

Description

Technical Field

[0001] This utility model relates to the field of cutting machine technology, specifically to a fabric layering cutting machine. Background Technology

[0002] In the luggage manufacturing industry, high-density, abrasion-resistant fabrics such as Oxford cloth and polyester fiber are widely used in core components such as luggage and bag bodies due to their excellent tear resistance and durability. To improve production efficiency, the industry generally adopts a one-time layered cutting process—that is, stacking multiple layers of fabric and cutting them simultaneously through a cutting bed or cutting equipment, which can theoretically significantly reduce the processing time per piece.

[0003] However, existing technologies have the following drawbacks in practical applications:

[0004] ① Interlayer slippage problem: When multiple layers of fabric are stacked, due to insufficient surface friction coefficient or uneven pressure of cutting equipment, the lower layer of fabric is prone to displacement during the cutting process, resulting in distorted cut piece shape and out-of-tolerance dimensions. Especially for smooth fabrics such as Oxford cloth, the scrap rate can rise to more than 15% when the stacking exceeds 5 layers.

[0005] ② Cutting force attenuation: When traditional vibrating knife / circular knife cutting machines penetrate thick material layers (typically 20-50mm thick), the blade tip experiences nonlinear stress attenuation due to increased resistance, resulting in incomplete cutting of the bottom layer of fabric and "interlocking threads," requiring secondary processing, which directly negates the efficiency advantage.

[0006] ③ Risks of hot melt bonding: Although laser cutting can ensure the quality of the cut, the high-energy beam can melt the interface between polyester fiber layers, damage the fabric properties, and may cause adhesion. It can also produce toxic fumes, which does not meet green production standards.

[0007] Therefore, there is an urgent need for a new type of cutting fixture that can achieve high-precision synchronous cutting of 10-30 layers of fabric with low operational complexity and is compatible with mainstream cutting equipment. Utility Model Content

[0008] This invention provides a fabric layering and cutting machine for cutting multiple layers of fabric in one operation.

[0009] The technical solution adopted by this utility model is as follows: A fabric layering and cutting machine includes a worktable, a movable bridge installed on slide rails on both sides of the worktable, a machine head movably installed on the movable bridge, a rotating cutter disc and a blade installed on the machine head. The worktable has a plurality of vertically arrayed elastic support bars, the upper ends of all the elastic support bars are on the same horizontal plane to form a flexible support surface, and the elastic support bars form a clearance seam and a negative pressure space for the blade. The negative pressure space is connected to a negative pressure generator.

[0010] Preferably, the elastic support strip has a Shore hardness of 20A-40A and a top diameter of 1-5mm.

[0011] Preferably, the elastic support strip is made of one of silicone, thermoplastic polyurethane, or EPDM rubber.

[0012] Preferably, the vacuum degree of the negative pressure generator is adjustable in the range of -0.06MPa to -0.09MPa.

[0013] Preferably, the workbench is divided into an outer frame and multiple detachable support modules, and the support module includes a mounting plate and a number of densely arranged elastic support bars.

[0014] Preferably, the outer frame is provided with a first air hole connecting the negative pressure space and the negative pressure generator.

[0015] Preferably, the outer frame is provided with a second air hole communicating with the negative pressure generator along the moving direction of the movable bridge, for adsorbing the film covering the upper surface of the multi-layer fabric to be cut.

[0016] This utility model has the following beneficial effects:

[0017] 1. Overcoming interlayer slippage: By setting a flexible support surface composed of dense elastic support strips on the workbench surface and combining it with a negative pressure adsorption system, it can firmly adsorb and fix each layer of multi-layer fabric, effectively preventing the displacement of the lower layer of fabric during the cutting process, ensuring the accuracy and consistency of the cutting dimensions of multi-layer fabric, and significantly reducing the scrap rate.

[0018] 2. Avoid secondary processing: The dense elastic support strips provide a flexible support base for the fabric. When the blade presses down to cut, the support strips can undergo elastic deformation, which not only provides cutting space for the blade, but also forms a wrapping support effect on the fabric, reducing cutting resistance and allowing the blade to penetrate all layers of fabric more smoothly. This effectively solves the problem of incomplete cutting of the bottom layer due to stress attenuation and avoids subsequent secondary processing steps.

[0019] 3. Avoid heat-melting damage and environmental pollution: The mechanical cutting method eliminates the heat-melting effect that laser cutting may produce, and will not melt the interlayer interface of polyester fibers and other fabrics, ensuring that the physical properties of the fabric edge are not damaged after cutting, and no toxic fumes are generated, which meets the requirements of green and environmentally friendly production.

[0020] 4. Easy to maintain and adjust: The workbench adopts a modular design, which makes it easy to replace the local support modules for different fabrics or blade wear conditions, extending the service life of the equipment and reducing maintenance costs. The adjustable negative pressure vacuum degree allows operators to optimize the adsorption force according to different fabric layers and characteristics, improving the process adaptability and operational flexibility of the equipment.

[0021] 5. Performance Improvement: By setting a second air vent, the function of the negative pressure system is expanded, enabling it not only to adsorb and fix the fabric to be cut, but also to adsorb the film covering the surface of the fabric at the same time, forming a relatively sealed space within the film. This helps to achieve the flat adsorption of multiple layers of fabric, further ensuring the stability of the cutting environment and the cutting accuracy. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the workbench in an embodiment of the present invention.

[0024] Figure 3 This is an enlarged schematic diagram of point A in an embodiment of this utility model.

[0025] Figure 4 This is a schematic diagram of the support module in an embodiment of the present utility model.

[0026] Workbench 1, elastic support bar 1.1, clearance gap 1.2, support module 1.4, mounting plate 1.5, first air hole 1.6, second air hole 1.7;

[0027] Mobile cable tray 2;

[0028] No. 3;

[0029] Rotary cutter head 4;

[0030] Blade 5. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0032] In the embodiments, such as Figure 1-4As shown, a fabric layering and cutting machine includes a worktable 1, a movable bridge 2 mounted on slide rails on both sides of the worktable 1, a machine head 3 movably mounted on the movable bridge 2, a rotating cutter head 4 and blades 5 mounted on the machine head 3. The worktable 1 has a plurality of vertically arrayed elastic support bars 1.1, the upper ends of all elastic support bars 1.1 being at the same horizontal plane to form a flexible support surface. A clearance seam 1.2 for the blades 5 and a negative pressure space are formed between the elastic support bars 1.1, and a negative pressure generator is connected to the negative pressure space. In this embodiment, the movable bridge 2, movable machine head 3, rotating cutter head 4, and blades 5 are all conventional designs; the main improvement is concentrated on the worktable 1. By setting a flexible support surface composed of a plurality of vertically arrayed elastic support bars 1.1, and forming a clearance seam 1.2 for the blades 5 and a negative pressure space connected to the negative pressure generator between the elastic support bars 1.1, the worktable 1 can effectively overcome interlayer slippage, avoid secondary processing, and prevent heat-melting damage and environmental pollution. The flexible support surface can firmly fix each layer of the multi-layer fabric under the negative pressure adsorption, preventing the lower layer of fabric from shifting; when the blade 5 presses down to cut, the elastic support strip 1.1 can undergo elastic deformation, providing cutting space for the blade 5 and reducing cutting resistance, ensuring that the bottom layer of fabric is completely cut off; at the same time, the mechanical cutting method is adopted, eliminating the risk of heat melting and toxic fumes.

[0033] In this embodiment, the elastic support strip 1.1 has a Shore hardness of 20A-40A and a top diameter of 1-5mm. This type of elastic support strip 1.1 optimizes the support effect on the fabric, ensuring sufficient deformation space for the blade 5 to cut and avoid, while also providing stable support to prevent the fabric from sinking excessively, thus achieving the best balance between firmly fixing the fabric and ensuring smooth cutting.

[0034] In this embodiment, the elastic support strip 1.1 is made of one of silicone, thermoplastic polyurethane, or EPDM rubber. These materials ensure that the elastic support strip 1.1 can still return to its original shape after being subjected to repeated pressure over a long period of time, keeping the upper ends of all elastic support strips 1.1 at the same horizontal plane, ensuring the flatness and service life of the flexible support surface, while its material properties are suitable for contact with fabric.

[0035] In this embodiment, the vacuum level of the negative pressure generator is adjustable from -0.06 MPa to -0.09 MPa. This vacuum level range is sufficient to generate strong adsorption force to fix heavy fabric stacks ranging from 10 to 30 layers or even more, preventing them from shifting. At the same time, it avoids the possibility that excessively high vacuum levels may cause irreversible stretching deformation of some soft fabrics or even suck them into the clearance seam 1.2, thus improving the equipment's adaptability to different fabrics and layers.

[0036] In the embodiments, such as Figure 2-4As shown, the workbench 1 is divided into an outer frame 1.3 and multiple detachable support modules 1.4. The support module 1.4 includes a mounting plate 1.5 and several densely arranged elastic support bars 1.1. This modular design facilitates quick replacement and maintenance for localized wear (such as damage to the elastic support bars 1.1 under the frequent cutting paths of the blade 5) or different fabric characteristics, without having to replace the entire workbench 1, significantly reducing maintenance costs and time, and extending the overall service life of the equipment.

[0037] In the embodiments, such as Figure 3 As shown, the outer frame 1.3 is provided with a first air hole 1.6 connecting the negative pressure space and the negative pressure generator. Multiple first air holes 1.6 can be evenly arranged to ensure that the negative pressure can be applied evenly and effectively to the entire negative pressure space, thereby being transmitted to the fabric through the avoidance seam 1.2, achieving a firm overall adsorption of the multi-layer fabric and ensuring the reliability of the fixing effect.

[0038] In the embodiments, such as Figure 3 As shown, the outer frame 1.3 is provided with a second air hole 1.7 connected to the negative pressure generator along the moving direction of the movable bridge 2. This air hole is used to adsorb the film covering the upper surface of the multi-layered fabric to be cut. The second air hole 1.7 is specifically designed to adsorb the film (such as plastic film) covering the upper surface of the multi-layered fabric to be cut. By forming a negative pressure above the film, it is pressed flat onto the fabric stack, which helps to further eliminate interlayer air and constrain the fabric. This, together with the adsorption effect of the flexible support surface and the first air hole 1.6, improves the fixing effect and flatness of the multi-layered fabric stack, further ensuring the cutting accuracy.

[0039] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A fabric layering and cutting machine, comprising a worktable (1), a movable bridge (2) mounted on slide rails on both sides of the worktable (1), a machine head (3) movably mounted on the movable bridge (2), a rotary cutter disc (4) and blades (5) mounted on the machine head (3), characterized in that, The workbench (1) has several vertically arranged elastic support bars (1.1), the upper ends of all the elastic support bars (1.1) are on the same horizontal plane to form a flexible support surface, and the elastic support bars (1.1) form a clearance gap (1.2) for the blade (5) and a negative pressure space, and the negative pressure space is connected to a negative pressure generator.

2. The fabric layering and cutting machine according to claim 1, characterized in that, The elastic support strip (1.1) has a Shore hardness of 20A-40A and a top diameter of 1-5mm.

3. The fabric layering and cutting machine according to claim 1 or 2, characterized in that, The elastic support strip (1.1) is made of one of silicone, thermoplastic polyurethane or EPDM rubber.

4. The fabric layering and cutting machine according to claim 1, characterized in that, The vacuum level of the negative pressure generator is adjustable from -0.06MPa to -0.09MPa.

5. The fabric layering and cutting machine according to claim 1, characterized in that, The workbench (1) is divided into an outer frame (1.3) and multiple detachable support modules (1.4). The support module (1.4) includes a mounting plate (1.5) and a number of densely arranged elastic support bars (1.1).

6. The fabric layering and cutting machine according to claim 5, characterized in that, The outer frame (1.3) is provided with a first vent (1.6) that connects the negative pressure space with the negative pressure generator.

7. The fabric layering and cutting machine according to claim 5, characterized in that, The outer frame (1.3) is provided with a second air hole (1.7) connected to the negative pressure generator along the moving direction of the movable bridge (2), which is used to adsorb the film covering the upper surface of the multi-layer fabric to be cut.

Images