Cloth trimming device

Abstract

The application provides a cloth edge cutting device, belonging to the technical field of cloth processing, comprising a base, a moving seat and a cutting assembly; the base is arranged on a horizontal plane; the moving seat is slidably connected to the base in the horizontal direction, and the upper side thereof is used for supporting cloth; the moving seat is drivingly connected with an adjusting mechanism, the adjusting mechanism is used for driving the moving seat to move relative to the base, so that the moving seat is arranged in the center of the cloth; the cutting assembly is arranged on the moving seat and used for being connected with two cloth edges of the cloth to cut the cloth edges. The cloth edge cutting device provided by the application can quickly adapt to the centering requirement of cloth with different widths by the overall sliding of the moving seat without disassembling or adjusting the cutting assembly itself, greatly shortens the adjusting time, and effectively improves the production change efficiency.

Description

Technical Field

[0001] This application belongs to the field of fabric processing technology, and more specifically, relates to a fabric trimming device. Background Technology

[0002] In the fabric processing industry, edge trimming is a crucial process for ensuring neat fabric edges and eliminating fraying and irregular wrinkles. It directly affects the processing accuracy and product quality of subsequent sewing, dyeing, and lamination processes. Currently, fabric edge trimming mainly relies on various edge trimming equipment, including manual cutting machines, semi-automatic edge trimming machines, and fully automatic edge trimming production lines.

[0003] Currently, existing fabric edge trimming equipment typically consists of a support mechanism, a conveying mechanism, and a cutting assembly. The support mechanism is usually a fixed base that supports the entire equipment and the fabric to be processed. The conveying mechanism generally includes a conveyor belt or conveyor rollers, used to drive the fabric to move continuously along a preset path. The cutting assembly is the core functional component, usually composed of a blade holder and blades. The blades are fixed to the blade holder by bolts or clips, and the blade holder is directly mounted on the fixed bracket of the base or conveying mechanism. Edge cutting is achieved through the relative movement of the fabric and the blades. During operation, the fabric is conveyed by the conveying mechanism to the area below the cutting assembly, where the blades on both sides contact the edge of the fabric, completing the edge trimming operation as the fabric moves.

[0004] The inventors discovered that existing edge-cutting equipment suffers from significant adjustment inconvenience in practical applications. Due to variations in fabric width between different batches, or potential lateral shifts within the same batch during transport, frequent adjustments to the positions of the blades on both sides are necessary to accommodate the fabric edges. However, existing equipment often employs a fixed design for its cutting components, with the blades and blade holders in relatively fixed positions. Adjustment requires first loosening the fixing bolts between the blades and the blade holders, then manually moving both blade holders to the target position, and finally retightening the bolts. This process is cumbersome, and manual adjustment can easily lead to asymmetrical blade positions. Utility Model Content

[0005] The purpose of this application is to provide a fabric trimming device to solve the technical problem that the existing fabric trimming equipment requires loosening the blades and moving the positions of the blades on both sides when adjusting the trimming center, which is cumbersome and inefficient.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A fabric trimming device is provided, comprising: A base for mounting on a horizontal surface; A movable seat is slidably connected to the base along a horizontal direction, and its upper side is used to support the fabric; the movable seat is driven by an adjustment mechanism, which is used to move the movable seat relative to the base so that the movable seat is aligned with the fabric; and A cutting assembly, mounted on the movable seat, is used to engage with the two selvage edges of the fabric to cut the selvage edges.

[0007] In one possible implementation, the cutting component includes: Multiple rotating rollers are arranged horizontally at intervals on the upper side of the movable base, and each of the rotating rollers is rotatably connected to the movable base; the axial direction of each rotating roller is parallel to the moving direction of the movable base. Two sets of cutter holders are spaced apart on the upper side of the movable seat. Each set of cutter holders includes multiple cutter holders that are connected to the multiple rotating rollers in a one-to-one correspondence. The cutter holders are used to install blades, and a fixing member is provided between the blades and the cutter holders to fix the blades. By rotating the rotating roller, the corresponding blade on the rotating roller can be rotated to either contact with the fabric or to separate from the fabric.

[0008] In one possible implementation, the tool holder is slidably connected to the corresponding rotating roller via a sliding seat, and the sliding seat has a first threaded sleeve penetrating its outer wall; the first threaded sleeve is threadedly connected to a first fixing bolt, and the end of the first fixing bolt is adapted to abut against the rotating roller.

[0009] In one possible implementation, the movable seat has a rotating seat that is rotatably connected to the rotating roller, and the rotating seat has a second threaded sleeve that penetrates its outer wall; the second threaded sleeve is threadedly connected to a second fixing bolt, and the end of the second fixing bolt is adapted to abut against the rotating roller.

[0010] In one possible implementation, the fixing member includes: Multiple third threaded sleeves are arranged side-by-side on the corresponding tool holders; and Multiple third fixing bolts correspond one-to-one with multiple third threaded sleeves. Each third fixing bolt is threadedly connected to the corresponding third threaded sleeve, and the end of the third fixing bolt is adapted to abut against the blade.

[0011] In one possible implementation, a support plate is provided between the movable seat and the knife holder, the support plate being used to slide in contact with the fabric; and the support plate has inclined portions on both sides along the direction of fabric movement.

[0012] In one possible implementation, the support plate has a plurality of strip-shaped holes through which the blade passes from the top.

[0013] In one possible implementation, the end of the blade holder has a clearance portion that is adapted to avoid the fabric when the rotating roller drives the blade to contact the fabric.

[0014] In one possible implementation, the adjustment mechanism includes: A screw is rotatably connected to the movable seat, and the axial direction of the screw is parallel to the moving direction of the movable seat; A threaded seat is fixedly mounted on the base, and the threaded seat is threadedly connected to the screw. The screw can be rotated to move the movable seat in a horizontal direction.

[0015] In one possible implementation, a guide member is provided between the movable seat and the base, the guide member comprising: A guide groove is formed on the movable seat, and its extending direction is parallel to the moving direction of the movable seat; and The guide block is fixedly mounted on the base and is slidably connected to the guide groove.

[0016] In this embodiment, firstly, the base of the device is placed stably on a horizontal working surface. The rigid structure of the base provides stable support for the entire device, ensuring no shaking or deviation during subsequent operation. Then, the fabric to be cut is laid flat on the upper side of the moving seat, with the fabric's conveying direction perpendicular to the preset sliding direction of the moving seat for subsequent centering adjustments. Next, the adjusting mechanism is operated to move the moving seat along the horizontal guide rail of the base. During this process, the operator can observe the fabric edge and the preset centering reference line on the moving seat (or use edge sensor feedback) to adjust the position of the moving seat in real time until the fabric's central axis is completely aligned with the moving seat's centering reference, completing rapid fabric centering. After centering, the cutting component is activated, making precise contact with the fabric edges on both sides. As the fabric is continuously conveyed, the cutting component performs stable and continuous cutting operations on the fabric edges, ultimately achieving fabric edge trimming.

[0017] The fabric edge-cutting device provided in this application embodiment, compared with the prior art, provides a solid foundation for the overall operation of the device through the stable support of the base, avoiding edge-cutting errors caused by equipment vibration and ensuring the stability of the cutting process. The cooperation between the movable seat and the adjustment mechanism fundamentally solves the cumbersome operation of loosening the cutter and manually moving the two side cutter holders. Through the overall sliding of the movable seat, the centering requirements of fabrics of different widths can be quickly adapted without disassembling or adjusting the cutting components themselves, greatly shortening the adjustment time and effectively improving changeover efficiency. At the same time, the precise docking of the cutting components with the fabric edges on both sides achieves synchronous cutting on both sides. Combined with the precise centering of the movable seat, it ensures the symmetry and straightness of the cut edges on both sides, reducing fabric waste caused by asymmetry due to manual adjustment, and meeting the needs of modern production lines for efficient and high-precision edge cutting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of the fabric trimming device provided in the embodiments of this application. Figure 1 ; Figure 2 A three-dimensional structural diagram of the fabric trimming device provided in the embodiments of this application. Figure 2 ; Figure 3 This is a top view of the fabric trimming device provided in an embodiment of this application. Figure 4 This is a front view of the fabric trimming device provided in the embodiments of this application; Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure along line AA; Figure 6 This is a three-dimensional structural diagram of the tool holder used in the embodiments of this application; The following are the labeling elements in the figure: 1. Base; 2. Movable seat; 21. Rotating seat; 211. Second threaded sleeve; 212. Second fixing bolt; 3. Cutting assembly; 31. Rotary roller; 32. Blade holder; 321. Sliding seat; 322. First threaded sleeve; 323. First fixing bolt; 324. Clearance part; 33. Blade; 4. Adjustment mechanism; 41. Screw; 42. Threaded seat; 5. Fixing component; 51. Third threaded sleeve; 52. Third fixing bolt; 6. Support plate; 61. Inclined part; 62. Strip hole; 7. Guide component; 71. Guide groove; 72. Guide block; 8. Fabric. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Please refer to the following: Figures 1 to 6 The fabric edge-cutting device provided in this application will now be described. The fabric edge-cutting device includes a base 1, a movable seat 2, and a cutting component 3.

[0025] The base 1 is used to set on a horizontal surface; the base 1 is made of metal profile and the bottom of the base 1 is fixedly connected to the ground.

[0026] The movable seat 2 is slidably connected to the base 1 in the horizontal direction, and its upper side is used to support the fabric 8; the movable seat 2 is connected to the adjustment mechanism 4, which is used to drive the movable seat 2 to move relative to the base 1 so that the movable seat 2 is aligned with the fabric 8.

[0027] The cutting component 3 is mounted on the movable seat 2 and is used to connect with the two edges of the fabric 8 to cut the edges.

[0028] The adjustment mechanism 4 can be extended to an electric adjustment mode. For example, a servo motor and ball screw transmission structure can be added to the base 1. The PLC control system receives the edge sensor signal of the fabric 8 and automatically drives the moving seat 2 to complete the centering without manual operation; or a distance sensor (such as a laser rangefinder) can be set at the bottom of the moving seat 2 to monitor the edge position of the fabric 8 in real time and provide feedback for adjustment to improve the centering accuracy.

[0029] In this embodiment, firstly, the base 1 of the device is placed stably on a horizontal working surface. The rigid structure of the base 1 provides stable support for the entire device, ensuring no shaking or deviation during subsequent operation. Then, the fabric 8 to be cut is laid flat on the upper side of the moving seat 2. The conveying direction of the fabric 8 is perpendicular to the preset sliding direction of the moving seat 2 for subsequent centering adjustment. Next, by operating the adjustment mechanism 4, the moving seat 2 is driven to slide along the horizontal guide rail of the base 1. During this process, the operator can observe the edge of the fabric 8 and the preset centering reference line on the moving seat 2 (or use edge sensor feedback) to adjust the position of the moving seat 2 in real time until the central axis of the fabric 8 is completely aligned with the centering reference line of the moving seat 2, completing the rapid centering of the fabric 8. After centering, the cutting component 3 is activated, making precise contact with the fabric edges on both sides of the fabric 8. As the fabric 8 is continuously conveyed, the cutting component 3 performs stable and continuous cutting operations on the fabric edges, ultimately achieving the trimming of the fabric 8 edges.

[0030] Compared with the prior art, the fabric edge-cutting device provided in this application embodiment provides a solid foundation for the overall operation of the device through the stable support of the base 1, avoiding edge-cutting errors caused by equipment vibration and ensuring the stability of the cutting process. The cooperation between the movable seat 2 and the adjustment mechanism 4 fundamentally solves the cumbersome operation of loosening the blades and manually moving the blade holders 32 on both sides. Through the overall sliding of the movable seat 2, the centering requirements of fabrics 8 of different widths can be quickly adapted without disassembling or adjusting the cutting component 3 itself, greatly shortening the adjustment time and effectively improving production changeover efficiency. At the same time, the precise docking of the cutting component 3 and the fabric edges on both sides of the fabric 8 achieves synchronous cutting on both sides. Combined with the precise centering of the movable seat 2, it ensures the symmetry and straightness of the cut edges on both sides, reducing fabric waste caused by asymmetry due to manual adjustment, and meeting the needs of modern production lines for efficient and high-precision edge cutting.

[0031] In some embodiments, the cutting component 3 described above may employ, as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The cutting assembly 3 includes multiple rotating rollers 31 and two sets of blade holders 32.

[0032] Multiple rotating rollers 31 are arranged horizontally at intervals on the upper side of the movable seat 2, and each rotating roller 31 is rotatably connected to the movable seat 2; the axial direction of each rotating roller 31 is parallel to the moving direction of the movable seat 2.

[0033] Two sets of cutter holders 32 are spaced apart on the upper side of the movable seat 2. Each set of cutter holders 32 includes multiple cutter holders 32 that are connected to multiple rotating rollers 31 in a one-to-one correspondence. The cutter holders 32 are used to install the blades 33, and a fixing member 5 is provided between the blades 33 and the cutter holders 32. The fixing member 5 is used to fix the blades 33.

[0034] By rotating the rotating roller 31, the corresponding blade 33 on the rotating roller 31 can be rotated to either contact with the fabric 8 or to separate from the fabric 8.

[0035] When the cutting assembly 3 is working, when cutting is required, the target roller 31 is rotated (via a handle or drive device) to drive the blade holder 32 and blade 33 on the roller 31 to rotate, so that the blade 33 rotates to contact the surface of the fabric 8; after cutting is completed, the roller 31 is rotated in the opposite direction to rotate the blade 33 away from the surface of the fabric 8, so as to avoid the blade 33 rubbing against the fabric 8 when not in operation.

[0036] The rotating roller 31 can be designed as a hollow structure with built-in heating elements (such as resistance wire) to keep the blade 33 at a constant temperature during cutting, which is suitable for hot-melt cutting of chemical fiber fabrics 8 and prevents the edges from getting fuzzy; or an angle scale can be set at the end of the rotating roller 31, with a pointer to mark the rotation angle of the blade 33, so as to realize the quantitative adjustment of the cutting depth of the blade 33 and adapt to fabrics 8 of different thicknesses (such as yarn and canvas).

[0037] By adopting the above technical solution, the blade 33 achieves contact / separation switching through the rotation of the roller 31, and can quickly start and stop cutting without disassembly, making operation convenient; the blade holder 32 corresponds one-to-one with the roller 31, and can select one or more sets of blades 33 to work according to the width of the fabric 8, which is highly flexible.

[0038] In some embodiments, the tool holder 32 may be adopted as follows: Figures 1 to 4 and Figure 6 The structure shown is described in the following document. Figures 1 to 4 and Figure 6 The tool holder 32 is slidably connected to the corresponding rotating roller 31 via a sliding seat 321, and the sliding seat 321 has a first threaded sleeve 322 that penetrates its outer wall; the first threaded sleeve 322 is threadedly connected to a first fixing bolt 323, and the end of the first fixing bolt 323 is adapted to abut against the rotating roller 31.

[0039] Before installing the blade 33, loosen the first fixing bolt 323 (unscrew it so that its end is detached from the rotating roller 31), push the sliding seat 321 to slide along the axis of the rotating roller 31, and adjust the blade holder 32 to the target cutting position at the edge of the fabric 8; after the position is determined, tighten the first fixing bolt 323 so that its end is in close contact with the outer wall of the rotating roller 31, and lock the sliding seat 321 by friction to prevent the blade holder 32 from shifting during cutting.

[0040] Wear-resistant bushings (such as polytetrafluoroethylene) can be added to the inner wall of the sliding seat 321 to reduce sliding wear with the rotating roller 31 and extend service life; or axial scale lines can be set on the surface of the rotating roller 31 and pointers can be installed on the side of the sliding seat 321 to realize visual adjustment of the position of the tool holder 32; a rubber pad can be added to the end of the first fixing bolt 323 to increase the friction with the rotating roller 31 and improve the locking reliability.

[0041] By adopting the above technical solution, the sliding cooperation between the sliding seat 321 and the rotating roller 31 allows the knife holder 32 to be freely adjusted along the axial direction of the rotating roller 31 to adapt to the cutting requirements of different widths of fabric 8; the threaded locking structure of the first fixing bolt 323 is simple and reliable, and there is no risk of loosening after adjustment, ensuring that the cutting position of the blade 33 is stable.

[0042] In some embodiments, the movable seat 2 may be adopted as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The movable seat 2 has a rotating seat 21 that is rotatably connected to the rotating roller 31. The rotating seat 21 has a second threaded sleeve 211 that penetrates its outer wall. The second threaded sleeve 211 is threadedly connected to a second fixing bolt 212, and the end of the second fixing bolt 212 is adapted to abut against the rotating roller 31.

[0043] Before rotating the roller 31, loosen the second fixing bolt 212 (so that its end is detached from the roller 31), and rotate the roller 31 manually or by a drive device to adjust the blade 33 to the working angle that contacts the fabric 8; after adjustment, tighten the second fixing bolt 212 so that its end presses against the surface of the roller 31, and fix the rotation angle of the roller 31 by pressure to prevent the roller 31 from deflecting due to vibration during the cutting process.

[0044] Positioning pin holes can be added to the rotating seat 21, and multiple angle positioning holes (such as one hole every 15°) can be set at the end of the rotating roller 31. During adjustment, the positioning pins are inserted to quickly lock the angle of the rotating roller 31, replacing pure bolt fixing and improving operating efficiency; or anti-slip texture (such as serration) can be set at the contact part between the second fixing bolt 212 and the rotating roller 31 to increase static friction and prevent the bolt from loosening.

[0045] By adopting the above technical solution, the cooperation between the second fixing bolt 212 and the rotating seat 21 can provide rigid fixation after the blade 33 angle is adjusted, preventing the roller 31 from rotating due to centrifugal force or the resistance of the cloth 8 during high-speed cutting, and ensuring that the blade 33 always maintains the preset cutting angle; the threaded connection structure is simple, the maintenance cost is low, and it is suitable for long-term high-frequency adjustment scenarios.

[0046] In some embodiments, the fixing member 5 may be as follows: Figure 6 The structure shown is described in the following document. Figure 6 The fixing component 5 includes multiple third threaded sleeves 51 and multiple third fixing bolts 52.

[0047] Multiple third threaded sleeves 51 are arranged side by side on the corresponding tool holders 32.

[0048] Multiple third fixing bolts 52 correspond one-to-one with multiple third threaded sleeves 51. Each third fixing bolt 52 is threadedly connected to the corresponding third threaded sleeve 51, and the end of the third fixing bolt 52 is adapted to abut against the blade 33.

[0049] When installing the blade 33, place the blade 33 against the mounting plane of the blade holder 32, with the cutting edge of the blade 33 facing the conveying direction of the fabric 8; then tighten the multiple third fixing bolts 52 in sequence, so that their ends are perpendicular to the side (or back) of the blade 33, and firmly clamp the blade 33 onto the blade holder 32 through multi-point pressure; when replacing the blade 33, loosen the third fixing bolts 52 in the opposite direction, remove the old blade 33 and replace it with a new blade 33, and repeat the above fixing steps.

[0050] The tool holder 32 can be provided with a positioning groove (such as a T-slot or dovetail groove) that matches the shape of the blade 33. After the blade 33 is inserted into the positioning groove, it is fixed by the third fixing bolt 52 to prevent the blade 33 from shifting laterally; or a bolt and spring combination structure can be used, with a compression spring connected to the end of the third fixing bolt 52. The spring force automatically compensates for the gap after the blade 33 is worn, and the fixing pressure is kept stable.

[0051] By adopting the above technical solution, multiple third fixing bolts 52 are arranged in parallel along the length of the blade 33 to achieve multi-point uniform fixing of the blade 33, avoiding deformation or vibration of the blade 33 caused by single-point fixing; the threaded connection method allows the blade 33 to be installed and removed without special tools (only a wrench is needed), and the disassembly and assembly speed is fast, improving the equipment maintenance efficiency.

[0052] In some embodiments, the movable seat 2 may be adopted as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 A support plate 6 is provided between the movable seat 2 and the knife holder 32. The support plate 6 is used to slide in contact with the fabric 8. Along the moving direction of the fabric 8, both sides of the support plate 6 have inclined portions 61.

[0053] When the fabric 8 is conveyed, its lower surface slides in contact with the upper side of the support plate 6. The support plate 6 provides rigid support for the fabric 8, preventing the fabric 8 from being concave due to the pressure of the blade 33 during cutting. When the edge of the fabric 8 passes through both sides of the support plate 6, it smoothly transitions through the inclined part 61 (such as a 15°-30° inclined surface), avoiding the edge of the fabric 8 from getting stuck or being scratched by the edges of the support plate 6.

[0054] By adopting the above technical solution, the support plate 6 improves the flatness of the fabric 8 in the cutting area and ensures that the cutting depth of the blade 33 is consistent; the inclined parts 61 on both sides are transitioned by the inclined surface to avoid hard contact between the edge of the fabric 8 and the support plate 6, which is especially suitable for thin fabrics 8 (such as silk) or fabrics that are easy to snag (such as knitted fabric), and reduces the defect rate.

[0055] In some embodiments, the aforementioned support plate 6 may be adopted as follows: Figures 1 to 3 The structure shown is described in the following document. Figures 1 to 3 The support plate 6 has multiple strip holes 62 for the blade 33 to pass through from the top.

[0056] When the blade 33 rotates to the working position via the rotating roller 31, its cutting edge extends upward through the strip hole 62 on the support plate 6 (or downward, depending on the installation direction of the blade 33), so that the remaining cutting edge of the blade 33 is higher than the upper surface of the support plate 6, and just contacts and cuts the surface of the fabric 8; during the cutting process, the blade 33 adjusts its angle or position slightly within the strip hole 62 with the rotating roller 31, and the strip hole 62 provides space for the blade 33 to move.

[0057] The strip hole 62 can be designed as an elongated hole with a guide sleeve. The guide sleeve is made of wear-resistant metal and is fitted inside the strip hole 62 to prevent the blade 33 from directly rubbing against the support plate 6, which would cause the strip hole 62 to wear out. Alternatively, an air nozzle can be set at the edge of the strip hole 62 to blow away the cloth scraps generated during cutting with compressed air in a timely manner, so as to avoid the accumulation of cloth scraps affecting the heat dissipation of the blade 33.

[0058] The number of slots 62 can be set according to the frequently used preset cutting interval, so that when the blade 33 is adjusted to the preset position, it corresponds to the corresponding slot 62.

[0059] By adopting the above technical solution, the strip hole 62 provides a channel for the blade 33 to pass through the support plate 6, so that the blade 33 can contact and cut from below (or above) the fabric 8 without the need for additional space to install the blade 33, thus simplifying the device structure; the length direction of the strip hole 62 is consistent with the axial direction of the roller 31, allowing the blade 33 to move synchronously when the blade holder 32 slides along the roller 31, without affecting the position adjustment function.

[0060] In some embodiments, the tool holder 32 may be adopted as follows: Figure 6 The structure shown is described in the following document. Figure 6 The end of the blade holder 32 has a clearance part 324. When the rotating roller 31 drives the blade 33 to rotate to contact the fabric 8, the clearance part 324 is adapted to avoid the fabric 8.

[0061] When the rotating roller 31 drives the blade 33 to the cutting position that contacts the fabric 8, the clearance part 324 (such as an arc notch or bevel) at the end of the blade holder 32 is aligned with the edge of the fabric 8. At this time, a gap is formed between the body of the blade holder 32 and the fabric 8 to prevent the non-working part of the blade holder 32 from contacting the surface of the fabric 8.

[0062] By adopting the above technical solution, the avoidance part 324 effectively avoids unnecessary contact between the knife holder 32 and the fabric 8, preventing the knife holder 32 from scratching the surface of the fabric 8 or hooking the fibers of the fabric 8. It is especially suitable for fabrics with high surface smoothness requirements (such as printed fabrics and coated fabrics). The structure is simple and does not require additional driving parts. The function can be achieved simply by optimizing the shape of the knife holder 32 itself.

[0063] In some embodiments, the adjustment mechanism 4 described above may employ, for example... Figure 5 The structure shown is described in the following document. Figure 5 The adjusting mechanism 4 includes a screw 41 and a threaded seat 42.

[0064] The screw 41 is rotatably connected to the movable seat 2, and the axial direction of the screw 41 is parallel to the moving direction of the movable seat 2.

[0065] The threaded seat 42 is fixedly mounted on the base 1, and the threaded seat 42 is threadedly connected to the screw 41.

[0066] Among them, by rotating the screw 41, it is suitable to drive the moving seat 2 to move in the horizontal direction.

[0067] When the position of the movable seat 2 needs to be adjusted, the operator rotates the handle at the end of the screw 41 (or starts the drive motor). The screw 41 rotates in the threaded seat 42 and moves axially, thereby driving the movable seat 2 to slide horizontally along the base 1. By observing the alignment of the edge of the fabric 8 with the reference line of the movable seat 2, the operator stops rotating the screw 41 to complete the centering adjustment.

[0068] By adopting the above technical solution, the transmission between the screw 41 and the threaded seat 42 has self-locking properties. After adjustment, no additional locking device is needed to keep the position of the moving seat 2 stable. The transmission accuracy is high and there is no backlash, which reduces the centering error of the moving seat 2 and improves the straightness of the cut edge.

[0069] In some embodiments, the movable base 2 and the base 1 may be as follows: Figure 5 The structure shown is described in the following document. Figure 5 A guide member 7 is provided between the movable seat 2 and the base 1. The guide member 7 includes a guide groove 71 and a guide block 72.

[0070] The guide groove 71 is formed on the movable seat 2, and its extension direction is parallel to the movement direction of the movable seat 2.

[0071] The guide block 72 is fixedly mounted on the base 1 and is slidably connected to the guide groove 71.

[0072] When the movable seat 2 slides under the drive of the adjustment mechanism 4, the guide block 72 on the base 1 is embedded in the guide groove 71 of the movable seat 2 and slides along the extension direction of the guide groove 71 (parallel to the moving direction of the movable seat 2); the cooperation between the guide block 72 and the guide groove 71 restricts the lateral offset of the movable seat 2 (perpendicular to the moving direction) and ensures that the movable seat 2 moves only along a preset straight trajectory.

[0073] The guide groove 71 can be designed as a dovetail groove structure, and the guide block 72 is correspondingly dovetail-shaped. By replacing line contact with surface contact, the guiding stability is improved; or a ball bearing (such as a linear ball bearing) can be set between the guide block 72 and the guide groove 71 to convert sliding friction into rolling friction, thereby reducing the sliding resistance of the moving seat 2 and reducing the driving force requirement of the adjustment mechanism 4.

[0074] The guide component 7 effectively constrains the degree of freedom of the moving seat 2, preventing it from swaying or twisting during sliding, ensuring that the cutting component 3 and the edge of the fabric 8 remain parallel, and improving the perpendicularity of the cutting edge; the structure is compact, occupies little space, and can be integrated with the base 1 and the moving seat 2 for processing, reducing assembly errors.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fabric edge-cutting device, characterized in that, include: A base for mounting on a horizontal surface; A movable seat is slidably connected to the base along a horizontal direction, and its upper side is used to support the fabric; the movable seat is driven by an adjustment mechanism, which is used to move the movable seat relative to the base so that the movable seat is aligned with the fabric; and A cutting assembly, mounted on the movable seat, is used to engage with the two selvage edges of the fabric to cut the selvage edges.

2. The fabric edge-cutting device as described in claim 1, characterized in that, The cutting assembly includes: Multiple rotating rollers are arranged horizontally at intervals on the upper side of the movable base, and each of the rotating rollers is rotatably connected to the movable base; the axial direction of each rotating roller is parallel to the moving direction of the movable base. Two sets of cutter holders are spaced apart on the upper side of the movable seat. Each set of cutter holders includes multiple cutter holders that are connected to the multiple rotating rollers in a one-to-one correspondence. The cutter holders are used to install blades, and a fixing member is provided between the blades and the cutter holders to fix the blades. By rotating the rotating roller, the corresponding blade on the rotating roller can be rotated to either contact with the fabric or to separate from the fabric.

3. The fabric edge-cutting device as described in claim 2, characterized in that, The cutter holder is slidably connected to the corresponding rotating roller via a sliding seat, and the sliding seat has a first threaded sleeve that penetrates its outer wall; the first threaded sleeve is threadedly connected to a first fixing bolt, and the end of the first fixing bolt is adapted to abut against the rotating roller.

4. The fabric edge-cutting device as described in claim 2, characterized in that, The movable seat has a rotating seat that is rotatably connected to the rotating roller, and the rotating seat has a second threaded sleeve that penetrates its outer wall; the second threaded sleeve is threadedly connected to a second fixing bolt, and the end of the second fixing bolt is adapted to abut against the rotating roller.

5. The fabric edge-cutting device as described in claim 2, characterized in that, The fixing component includes: Multiple third threaded sleeves are arranged side-by-side on the corresponding tool holders; and Multiple third fixing bolts correspond one-to-one with multiple third threaded sleeves. Each third fixing bolt is threadedly connected to the corresponding third threaded sleeve, and the end of the third fixing bolt is adapted to abut against the blade.

6. The fabric edge-cutting device as described in claim 2, characterized in that, A support plate is provided between the movable seat and the knife holder, and the support plate is used to slide in contact with the fabric; the support plate has inclined portions on both sides along the moving direction of the fabric.

7. The fabric edge-cutting device as described in claim 6, characterized in that, The support plate has multiple strip-shaped holes for the blade to pass through from the top.

8. The fabric edge-cutting device as described in claim 2, characterized in that, The end of the blade holder has a clearance portion, which is adapted to avoid the fabric when the rotating roller drives the blade to rotate to contact the fabric.

9. The fabric edge-cutting device as described in claim 1, characterized in that, The adjustment mechanism includes: A screw is rotatably connected to the movable seat, and the axial direction of the screw is parallel to the moving direction of the movable seat; A threaded seat is fixedly mounted on the base, and the threaded seat is threadedly connected to the screw. The screw can be rotated to move the movable seat in a horizontal direction.

10. The fabric edge-cutting device as described in claim 1, characterized in that, A guide member is provided between the movable base and the base, the guide member comprising: A guide groove is formed on the movable seat, and its extending direction is parallel to the moving direction of the movable seat; and The guide block is fixedly mounted on the base and is slidably connected to the guide groove.

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