Clothing production tailoring equipment

Abstract

The invention relates to the technical field of garment production, in particular to garment production cutting equipment which comprises a machine base, an adsorption sliding plate arranged on the machine base and used for fixing cloth, a mounting beam transversely arranged in the width direction of the machine base in a crossing mode, a cutting mechanism arranged on the mounting beam and a moving assembly for driving the cutting mechanism to move transversely, longitudinally and vertically. The cutting mechanism comprises a driving part, a pivot driven by the driving part to rotate, a cutting part fixed to the pivot and a thread end drifting prevention assembly synchronously moving along with the cutting part, and the thread end drifting prevention assembly comprises a connecting base and is fixed to a mounting carrier of the cutting mechanism. The coating unit is arranged on the connecting base, and the coating end of the coating unit can be attached to the cutting face of the cloth and apply an anti-drifting medium. The auxiliary opening unit is located beside the coating unit and used for opening a cloth cutting seam immediately after cutting, so that a thread end is exposed to be matched with the coating action of the coating unit. The power linkage unit is in transmission connection with the pivot and used for providing periodic action power for the auxiliary opening unit.

Description

Technical Field

[0001] This invention relates to the field of garment production technology, specifically to a garment production cutting device. Background Technology

[0002] In large-scale garment production, cutting equipment is a key component connecting fabric preparation and subsequent sewing processes. For example, Chinese patent CN114872120B discloses a stabilizing structure for a cutting machine with a five-axis double-blade head. This structure includes a frame base plate, a frame upright plate, and a reinforcing plate. Multi-directional limiting of the cutting blades is achieved through first to third limiting bearing components and limiting bearing wheels. Combined with a five-axis connection structure (three external connecting shafts and two internal connecting shafts) to fix the double-blade head, this solves the problems of poor cutting accuracy and insufficient operational stability caused by blade oscillation in traditional cutting machines. Furthermore, the equipment is equipped with a lifting cylinder to drive a lifting plate to adjust the blade head height, adapting to fabrics of different thicknesses. Lifting and limiting are achieved through a hydraulic buffer and a limiting rod, further improving the stability of the cutting process.

[0003] While this existing technology effectively improves the stability of the cutting blade and the cutting accuracy, the following unresolved technical problems still exist in practical applications: 1. Loose Threads Leading to a Uneven Cut: When the five-axis double-blade head of the cutting machine cuts fabric at high speed, the fibers are cut, creating a large number of loose threads. This is especially true for low-adhesion fabrics such as pure cotton and synthetic blends, where the threads are easily scattered by airflow from the equipment and the workshop environment. The device lacks any mechanism to handle these immediately generated threads. The scattered threads are easily pulled by the blade head and conveyor structure, causing the fibers to detach from the fabric cut edges, damaging the integrity of the cut piece's shape. This necessitates additional manual trimming, reducing production efficiency.

[0004] 2. Narrow kerf leads to blind spots in thread handling: To ensure cutting accuracy, existing technologies use extremely small contact gaps between the cutter head and the fabric, resulting in narrow kerf widths. Some thread ends remain hidden within the kerf and cannot be exposed. Even with conventional auxiliary methods such as negative pressure adsorption, it is difficult to effectively handle hidden thread ends, leading to a persistent risk of loose cut surfaces.

[0005] 3. Rigid contact between the cutting blade and the fabric exacerbates wear and thread buildup: While existing technologies use multi-axis rigid connections to fix the cutting disc, improving stability, the rigid contact between the cutting blade and the fabric lacks a buffering mechanism. When the fabric thickness is uneven or contains minute impurities, the cutting blade is subjected to instantaneous impact forces. Long-term use can easily lead to blade wear and deformation, which in turn exacerbates thread buildup during the cutting process, creating a vicious cycle of blade wear, increased thread buildup, and decreased cut surface quality.

[0006] 4. Lack of process coordination design: Existing technology only focuses on the operational stability of the cutting blade itself, without considering the coordination between cutting and subsequent thread end processing and positioning marking. The cut pieces need to undergo additional processes such as overlocking and positioning, and thread end cleaning, which is cumbersome and manual operation can easily cause the pieces to shift, affecting the accuracy of subsequent splicing.

[0007] In addition, other related existing technologies, such as a high-precision chemical fiber fabric cutting device with publication number CN115674294B, although attempting to remove the thread ends adhering to the blade wall through a cleaning mechanism, can only deal with the residue attached to the blade surface and cannot solve the problem of scattered thread ends generated on the cutting surface in real time; such as a cutting device for silk fabric processing with publication number CN213173108U, which uses a fan to collect cutting residue under negative pressure, is still a post-collection mode, which has limited effect on the treatment of thread ends hidden in the cutting seam, and the strong negative pressure can easily cause the fabric edge to deform.

[0008] In summary, while existing technologies (based on CN114872120B) have solved the problems of cutting machine blade stability and cutting accuracy, they have not provided an effective solution to the core pain point of "preventing thread scattering on the cutting surface in real time." This results in defects such as thread scattering, loose cutting surfaces, and poor process coordination, hindering the improvement of garment production quality and efficiency. Therefore, developing a garment production cutting device that can simultaneously handle thread scattering during the cutting process, prevent loose cutting surfaces, and not affect cutting stability has become an urgent technical problem to be solved in this field. Summary of the Invention

[0009] The purpose of this invention is to provide a garment production cutting device to solve the problems mentioned in the prior art in the background section.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a garment production cutting device, comprising a base, an adsorption slide plate disposed on the base for fixing fabric, a mounting beam transversely spanning the width of the base, a cutting mechanism disposed on the mounting beam, and a moving component for driving the cutting mechanism to move transversely, longitudinally, and vertically. The cutting mechanism includes a driving component, a pivot driven to rotate by the driving component, and a cutting component fixed to the pivot. The cutting mechanism further includes a thread-preventing component that moves synchronously with the cutting component. The thread-preventing component includes: The connecting seat is fixed to the mounting carrier of the cutting mechanism; The coating unit, located on the connector, has a coating end that can adhere to the cut surface of the fabric and apply an anti-scattering medium to prevent thread ends from detaching from the main body of the fabric. An auxiliary support unit is located on the connecting seat and next to the coating unit. It is used to immediately open the fabric cut seam after cutting so that the thread ends can be exposed to adapt to the coating action of the coating unit. The power linkage unit, connected to the pivot drive, is used to provide periodic motion power for the auxiliary spreading unit.

[0011] Furthermore, the coating unit includes a telescopic cylinder connected vertically to the bottom of the connecting seat, a clamping part slidably connected inside the telescopic cylinder, and a wax column detachably connected to the lower end of the clamping part; the telescopic cylinder is provided with a sliding cavity, and an elastic element is installed inside the sliding cavity. The elastic element provides a pre-tightening force to the clamping part toward the fabric, so that the coating part always adheres to the surface of the fabric.

[0012] Furthermore, the outer wall of the clamping part is fitted with balls, and the inner wall of the sliding cavity of the telescopic cylinder is provided with a spiral rolling groove adapted to the balls. During the wear process of the wax column, the wax column is driven to rotate through the cooperation of the balls and the spiral rolling groove.

[0013] Furthermore, the auxiliary spreading unit includes a main tube fixedly connected to the connecting seat, two fork tubes connected to the bottom of the main tube, and airbags respectively installed at the ends of each fork tube. The airbags are connected to the power linkage unit through the main tube, and the main tube is located between the cutting part and the coating unit.

[0014] Furthermore, the fork tubes are symmetrically distributed on both sides of the axial direction of the cutting component, and the extension direction of the fork tubes is at an angle to the axial direction of the main tube. A recessed cavity for accommodating the airbag is opened on the downward-facing end face of the fork tube.

[0015] Furthermore, the power linkage unit includes a cam block fixed on a pivot, a sliding rod in rolling contact with the cam block, a piston connected to the sliding rod, and a cylinder housing the piston. The cylinder is connected to the main pipe through an air passage, which is fixed on a connecting seat. When the pivot rotates, it drives the cam block to push the sliding rod to reciprocate, causing the piston to perform a pumping / filling action within the cylinder.

[0016] Furthermore, the moving component includes a horizontal sliding seat slidably connected to the mounting beam, a lifting seat slidably connected to a mounting plate on one side of the horizontal sliding seat, a second driving unit for driving the horizontal sliding seat to move laterally along the mounting beam, and a third driving unit for driving the lifting seat to move vertically along the horizontal sliding seat.

[0017] Furthermore, the mounting carrier of the cutting mechanism includes a rotating plate and a floating plate; the rotating plate is fixedly connected to the bottom of the lifting seat, the pivot is rotatably connected to the floating plate through a support plate, a guide rod is provided between the floating plate and the rotating plate, a buffer elastic element is sleeved on the outer periphery of the guide rod, the buffer elastic element provides the floating plate with a buffer preload towards the fabric, the upper end of the guide rod penetrates the rotating plate and is threaded with a limit nut, and a rotary motor is also installed on the lifting seat, the rotary motor drives the rotating plate.

[0018] Furthermore, the adsorption slide plate is provided with a plurality of adsorption holes, which are connected to the interface of the negative pressure generating device through an air passage; the base is provided with a first driving unit for driving the adsorption slide plate to move linearly along the length of the base.

[0019] Furthermore, a drive spring is installed in the inner cavity of the cylinder, which elastically abuts against the piston and imparts potential energy to the piston to move downward.

[0020] This invention, through an innovative integrated design that combines cutting and thread-end prevention, specifically addresses the core shortcomings of existing cutting equipment in the background art, such as thread end scattering, loose cutting surfaces, rapid blade wear, and low thread end processing efficiency. It also brings multiple additional technical advantages, as detailed below: I. Address the root causes of loose threads and frayed cut surfaces to improve the quality of cut pieces. The core innovation of this invention is a thread-end anti-scattering component. Through the coordinated action of a coating unit and an auxiliary spreading unit, it breaks the existing technology's separation of cutting and thread end handling. The airbag of the auxiliary spreading unit immediately expands the narrow cut slit to 2-3mm after cutting, fully exposing the thread end hidden in the slit and avoiding the problem of blind spots caused by hidden thread ends in the prior art. The wax column of the coating unit always adheres to the cut surface under the pre-tightening force of the elastic element, and applies a wax layer synchronously with the cutting trajectory. It not only blocks the physical basis of airflow driving thread end scattering through the weight gain of the wax (the weight of the thread end and the weight of the wax layer ≥ 0.01g), but also uses the viscosity of the wax to make the thread end adhere to the surface of the adsorption plate, thus preventing the cut surface from loosening due to accidental pulling of the thread end from the source.

[0021] II. Optimize the working stability of the cutter and extend the service life of the equipment. To address the shortcomings of existing cutting blades that are prone to wear due to rigid contact, this invention provides a flexible buffering mechanism for the disc cutter through the design of a buffer elastic element between the floating plate and the rotating plate. When the fabric thickness is uneven or contains minute impurities, the instantaneous impact force on the cutter can be absorbed by the compression deformation of the buffer spring, avoiding direct rigid impact on the blade and reducing the wear rate of the cutter. At the same time, the low coefficient of friction (≤0.1) between the wax column of the coating unit and the fabric surface prevents pulling on the fabric during sliding. Combined with the stable negative pressure fixation of the adsorption slide plate, this ensures that the fabric is free from skewing and wrinkles during the cutting process, further improving cutting accuracy and forming a virtuous cycle of buffering and wear prevention, precise cutting, and fewer thread ends.

[0022] III. The power linkage design is energy-efficient and simplifies the equipment structure. The innovative power linkage unit of this invention converts the rotational power of the pivot into the inflation power of the auxiliary expansion unit, eliminating the need for additional drive components such as air pumps and motors. This reduces equipment energy consumption (by 30% compared to existing technologies that require additional drive for adsorption / blowing devices) and simplifies the equipment's structural layout. When the pivot rotates, it drives the cam block to periodically push the piston, achieving alternating expansion and contraction of the airbag, precisely synchronized with the cutting rhythm (the cam block completes one inflation-deflation cycle per rotation), avoiding fabric deformation caused by continuous airbag expansion. Simultaneously, the cavity design of the connecting seat acts as an airflow buffer, ensuring a stable and controllable airbag expansion speed and preventing thread tangling on both sides of the cutting seam due to airflow impact, further guaranteeing the coating effect on the thread ends.

[0023] IV. Multifunctional and collaborative adaptation to industrial production, improving overall efficiency The technical solution of this invention not only solves the core problem but also achieves multiple functional synergy: while the wax column coats the thread end, the wax residue formed upon contact with the fabric serves as a visual marker for the cutting position, facilitating rapid positioning in subsequent overlocking and splicing processes and reducing positioning time between processes; the equipment is adaptable to various garment fabrics (pure cotton, chemical fiber, knitted fabrics, etc.) with a width ≤1600mm and a thickness of 0.1-5mm, demonstrating strong versatility; the stepless speed regulation of the adsorption slide and the 360° rotation adjustment of the cutting mechanism can adapt to complex cutting trajectories such as straight lines, curves, and zigzag lines, meeting diverse cutting needs. Overall, this invention adapts to the needs of large-scale garment production by reducing manual trimming, shortening positioning time, and lowering rework rates.

[0024] In summary, this invention, through the organic combination of thread-end anti-scattering components, buffer structures, and power linkage design, not only addresses the core defects of existing technologies but also achieves comprehensive improvements in cut piece quality, equipment stability, production efficiency, and maintenance costs. It provides an integrated optimization solution for the garment production cutting process, demonstrating significant technological advancement and practical value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a garment production and cutting equipment according to the present invention; Figure 2 yes Figure 1 A diagram illustrating the positional relationship from another perspective; Figure 3 This is a schematic diagram showing the positional relationship of the rotating plate, floating plate, and disc cutter after assembly in this invention; Figure 4 yes Figure 3 A diagram illustrating the positional relationship from another perspective; Figure 5 yes Figure 3 The positional relationship of the rotating plate and the floating plate is omitted in the diagram. Figure 6 yes Figure 5 Schematic diagram of the explosive decomposition of the medium structure; Figure 7 yes Figure 6 Enlarged schematic diagram of the local structure at point A; Figure 8 yes Figure 6 A diagram illustrating the positional relationship from another perspective; Figure 9 This is a schematic diagram showing the positional relationship of the connecting seat, telescopic cylinder, and wax column after assembly in this invention; Figure 10 yes Figure 9 A schematic diagram showing the positional relationship of the middle section after it has been cut open; Figure 11 This is a schematic diagram showing the positional relationship of the connecting seat, main pipe, and fork pipe after assembly in this invention; Figure 12 yes Figure 11 A diagram showing the positional relationship from another perspective.

[0026] Reference numerals: 1. Base; 2. First drive unit; 3. Adsorption slide plate; 4. Mounting beam; 5. Rotary motor; 6. Third drive unit; 7. Lifting seat; 8. Mounting plate; 9. Floating plate; 10. Buffer spring; 11. Rotating plate; 12. Servo motor; 13. Guide rod; 14. Limit nut; 15. Support plate; 16. Inflatable seat; 17. Pivot; 18. Disc cutter; 19. Fork tube; 20. Main tube; 21. Wax column; 22. Telescopic cylinder; 23. Connecting seat; 24. Sliding rod; 25. Spring; 26. Ball bearing; 27. Clamping part; 28. Airbag; 29. ​​Piston; 30. Drive spring; 31. Transverse seat; 32. Cam block; 33. Sliding cavity; 34. Spiral rolling groove; 35. Second drive unit. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-12 The specific implementation methods of the garment production and cutting equipment of the present invention are described in detail below, including specific technical parameters. These implementation methods are merely preferred technical solutions and are not intended to limit the scope of protection of the present invention. Any technical solutions obtained through equivalent substitutions or modifications under the concept of the present invention fall within the scope of protection of the present invention.

[0028] The core of the garment production cutting equipment described in this embodiment lies in the integrated design of cutting and thread-end anti-scattering. The entire system includes a base 1, an adsorption slide plate 3, a mounting beam 4, a moving component, a cutting mechanism, and a thread-end anti-scattering component. These components work together to achieve precise fabric cutting, seam opening, and thread-end coating for anti-scattering in a continuous sequence. The overall dimensions of the equipment are adapted to industrial production needs. The base 1 is 3000mm long, 1800mm wide, and 800mm high. The mounting beam 4 spans the width of the base 1. The overall weight is approximately 800kg, and it is suitable for various garment fabrics (pure cotton, knitted fabrics, chemical blends, etc.) with a width ≤1600mm.

[0029] The base 1 is integrally cast from QT450-10 ductile iron, with four adjustable anchor bolts (model M24×100) welded to the bottom for adjusting the equipment's level. Rubber shock-absorbing pads are fitted to the bottom of the anchor bolts to reduce the impact of equipment vibration on cutting accuracy during the cutting process. Two parallel linear guide rails (model THK SR30W) are symmetrically mounted along the length of the top of the base 1, with a guide rail length of 2800mm, providing sliding support for the adsorption slide plate 3.

[0030] The adsorption slide plate 3 is made of 6061 aluminum alloy plate, with a length of 2500mm, a width of 1600mm, and a thickness of 50mm. The interior is milled to form a sealed cavity (with a volume of approximately 0.15m³). 3 The top of the suction plate has evenly distributed φ2mm adsorption holes with a hole spacing of 20mm×20mm, totaling 6250 holes, ensuring uniform force adsorption on the fabric. Four sliders adapted to the linear guide rail of the base 1 are fixed to the bottom of the suction plate 3 by bolts. The clearance between the sliders and the guide rail is ≤0.02mm, ensuring smooth sliding. A φ32mm stainless steel suction port is welded to one side of the suction plate 3, which is connected to an external rotary vane vacuum pump (model 2X-70A, suction rate 70L / s, ultimate vacuum 0.06MPa) via a PU negative pressure hose (inner diameter 32mm, wall thickness 5mm). After the vacuum pump is started, it can generate a stable negative pressure in the top suction holes of the suction plate 3, with an adsorption force ≥0.03MPa, meeting the fixing requirements of fabrics of different thicknesses (0.1-5mm).

[0031] The first drive unit 2 is used to drive the adsorption slide plate 3 to move linearly along the length of the base 1. It includes a first rack (model MODUL 2×500, length 2800mm) fixed along the length of the base 1. A servo geared motor (model Panasonic MSMD042G1U+MADDT1207, power 400W, reduction ratio 1:10) is mounted on the bottom of the adsorption slide plate 3 through a motor mount. The output shaft of the motor is connected to the first gear (module 2, number of teeth 20) through a flat key. The first gear meshes with the first rack for transmission. The transmission accuracy is ≤0.05mm / m. The movement speed of the adsorption slide plate 3 can be steplessly adjusted within the range of 0.1-5m / min to adapt to different cutting rhythms.

[0032] Mounting beam 4 is made of Q235B steel plate bent into a U-shape with the opening facing downwards. The crossbeam is 1900mm long, 100mm high, and 12mm thick. The two side columns are 600mm high, 80mm wide, and 10mm thick. The bottom of the columns is fixed to the machine base 1 on both sides in the width direction by 8 M16 chemical anchors. The verticality deviation is ≤0.03mm / m to ensure the stability of mounting beam 4.

[0033] The moving component enables the cutting mechanism to move laterally (in the width direction of the base), vertically, and rotate, specifically including: The transverse sliding base 31 and the second drive unit 35 are connected. The transverse sliding base is a one-piece machined aluminum alloy part, with a length of 200mm, a width of 150mm, and a height of 80mm. The top is slidably connected to the linear guide rail (model THK SR25W) at the bottom of the mounting beam 4 crossbeam via four sliders. The second drive unit 35 includes a second rack (module 2, length 1800mm) fixed along the length direction of the mounting beam 4 crossbeam. A servo geared motor (model same as the first drive unit) is mounted on the side of the transverse sliding base. The output shaft of the motor is connected to a second gear (module 2, number of teeth 20), which meshes with the second rack, driving the transverse sliding base to move along the width direction of the base 1 at a speed of 0.1-3m / min and a transmission accuracy of ≤0.05mm / m.

[0034] Mounting plate 8 and lifting seat 7; Mounting plate 8 is made of Q235B steel plate, 10mm thick, 500mm high, and 120mm wide, and is vertically fixed to one side of the transverse seat by bolts. Two parallel linear guide rails (model THKSR20W) are mounted vertically on the side of mounting plate 8. Lifting seat 7 is made of aluminum alloy, 180mm long, 100mm wide, and 120mm high, and is slidably connected to the guide rails of mounting plate 8 by four sliders, allowing it to move freely in the vertical direction.

[0035] The third drive unit 6 includes a third rack (module 2, length 400mm) vertically fixed to the side of the mounting plate 8, and a servo geared motor (power 400W, reduction ratio 1:20) mounted on the side of the lifting seat 7. The motor output shaft is connected to a third gear (module 2, number of teeth 20), which meshes with the third rack to drive the lifting seat 7 to move vertically. The stroke is 0-300mm, the speed is 0.05-1m / min, and the positioning accuracy is ≤0.02mm. It is suitable for cutting fabrics of different thicknesses and for equipment maintenance needs.

[0036] Rotary motor 5 and rotating plate 11; Rotary motor 5 is a hollow shaft servo motor (model Panasonic MSMA042A1G, power 400W, rated speed 3000rpm), fixed to the top of lifting base 7 via a flange. The motor output shaft (hollow hole diameter 30mm) passes through lifting base 7 and is fixed to rotating plate 11 via a key connection. Rotating plate 11 is made of Q235B steel plate, 10mm thick, 300mm long, and 150mm wide. Rotary motor 5 can drive rotating plate 11 to rotate 360° steplessly with a rotation accuracy ≤0.1°, realizing the adjustment of the cutting angle of disc cutter 18 and adapting to complex cutting trajectories such as curves and broken lines.

[0037] The cutting mechanism specifically includes: Mounting carriers (rotating plate 11, floating plate 9); floating plate 9 is an aluminum alloy plate, 8mm thick, 300mm long, and 120mm wide, located below rotating plate 11, with a 20mm gap between them. Two guide rods 13 are symmetrically and vertically fixed at both ends of floating plate 9. Guide rods 13 are made of 45# steel, 12mm in diameter and 100mm in length. Their upper ends slide through a φ12.2mm guide hole in rotating plate 11. A limiting nut 14 (model M12) is threaded onto the upper end of the guide rod 13 to limit the maximum downward stroke of floating plate 9. A buffer elastic element 10, i.e., a compression spring (1.5mm wire diameter, 18mm outer diameter, 60mm free length, 5N / mm stiffness), is wrapped around the outer circumference of the guide rods 13. The two ends of the spring elastically abut against the upper surface of floating plate 9 and the lower surface of rotating plate 11, respectively, imparting a downward preload (approximately 10N) to floating plate 9, thus buffering the cutter.

[0038] Support plate 15 and pivot 17: Two symmetrical support plates 15 are bolted to the lower surface of floating plate 9. Support plates 15 are made of Q235B steel, with a thickness of 8mm, a height of 80mm, and a width of 50mm. The two support plates 15 are 60mm apart and are horizontally connected to pivot 17 via deep groove ball bearings (model 6204). Pivot 17 is a tempered 45# steel component with a diameter of 20mm and a length of 150mm. Both ends are axially limited by bearing end caps to ensure smooth rotation and radial runout ≤0.02mm.

[0039] The disc cutter 18 and drive unit 12 are as follows: The disc cutter 18 is made of carbide, with an outer diameter of 100mm and a thickness of 1.2mm. The blade edge is smooth (or optionally serrated, with a tooth pitch of 2mm). It is fixed to the middle of the pivot 17 via a key connection and rotates coaxially with the pivot 17. The drive unit 12 is a servo motor (model Panasonic MSMD022G1U, power 200W, rated speed 6000rpm), which is fixed to the upper surface of the floating plate 9 via a motor mount. The motor output shaft is connected to the drive pulley (model SPA100-5V) via a coupling. One end of the pivot 17 is fixed to the driven pulley (model SPA80-5V). The drive pulley and the driven pulley are driven by a 5V type V-belt with a transmission ratio of 1:0.8, which allows the actual rotation speed of the disc cutter 18 to reach 7500rpm, ensuring cutting sharpness and adapting to different fabric materials.

[0040] The anti-drift wire assembly is fixed to the lower surface of the floating plate 9 and moves synchronously with the disc cutter 18. It includes a connecting seat 23, a coating unit, an auxiliary support unit, and a power linkage unit. The specific structure is as follows: Connector 23 is a one-piece machined aluminum alloy part, 80mm long, 50mm wide, and 30mm high. It is fixed to the lower surface of floating plate 9 by four M8 bolts, located on the radial side (rear side of the cutting direction) of disc cutter 18. The interior of connector 23 is milled to form a sealed cavity (approximately 50cm³). 3 ), serving as an airflow buffer chamber.

[0041] The coating unit implements anti-drift medium coating on the cut surface wire ends, specifically including: The telescopic cylinder 22 is made of stainless steel (304), with an outer diameter of 25mm, an inner diameter of 20mm, and a length of 60mm. Its upper end is connected to the lower surface of the connecting seat 23 via a thread, forming a sliding cavity 33 inside. The inner wall roughness of the sliding cavity 33 is Ra≤0.8μm to ensure smooth sliding of the clamping part 27. A φ12mm through hole is opened on the lower end face of the telescopic cylinder 22 for the wax column 21 to pass through.

[0042] The clamping part 27 is made of brass, with an outer diameter of 19.8 mm and a height of 40 mm. It is slidably fitted into the sliding cavity 33 with a gap of 0.1-0.2 mm. The lower end face of the clamping part 27 has a mounting hole of φ10 mm and a depth of 20 mm for tight-fitting mounting of the wax column 21. Two φ5 mm ball grooves are symmetrically formed around the periphery of the clamping part 27. Each ball groove rotatably embeds a ball 26 (model steel ball GCr15, diameter 4 mm), with about 1 mm of the ball 26 exposed.

[0043] The elastic element 25 is a compression spring (wire diameter 1.2mm, outer diameter 18mm, free length 40mm, stiffness 3N / mm), which is vertically installed in the sliding cavity 33. The upper end abuts against the lower surface of the connecting seat 23, and the lower end abuts against the upper surface of the clamping part 27, giving the clamping part 27 a downward preload (about 8N) to ensure that the wax column 21 always adheres to the fabric surface.

[0044] The wax column 21 is made of food-grade solid paraffin wax, with a diameter of 10mm, a length of 50mm, a melting point of 60℃, and a smooth surface. It is installed in the mounting hole of the clamping part 27 (which can be fixed with a set screw), with the lower end protruding about 10mm from the through hole of the telescopic cylinder 22. The inner wall of the sliding cavity 33 is machined with a spiral rolling groove 34 along the axial direction, with a lead of 10mm and a right-hand rotation. The ball bearing 26 is engaged in the spiral rolling groove 34. When the clamping part 27 moves downward under the action of the elastic element 25, the ball bearing 26 rolls along the spiral rolling groove 34, driving the clamping part 27 to rotate synchronously (at a speed of about 5rpm), ensuring that the wax column 21 wears evenly and the coating width is stable at 1-2mm.

[0045] The auxiliary expansion unit opens the cutting seam and exposes the hidden thread ends, specifically including: The main pipe 20 and the fork pipe 19 are as follows: The main pipe 20 is a 304 stainless steel pipe with an outer diameter of 15mm, an inner diameter of 12mm, and a length of 40mm. It is fixed to the outer wall of the telescopic cylinder 22 by welding and is located between the disc cutter 18 and the wax column 21 (15mm apart). The fork pipe 19 consists of two identical 304 stainless steel pipes with an outer diameter of 10mm, an inner diameter of 8mm, and a length of 30mm. They are symmetrically welded to the lower end of the main pipe 20, forming an axial angle of 30° with the main pipe 20. The two fork pipes 19 correspond to the two sides of the disc cutter 18 on the axial direction (20mm apart).

[0046] The airbag 28 is made of medical-grade silicone, is hemispherical, 15mm in diameter and 1mm thick, hollow inside, and is bonded and fixed to a recessed cavity (16mm in diameter and 5mm in depth) on the downward-facing end face of the fork tube 19. The interior of the airbag 28 is connected to the inner cavity of the connecting seat 23 through the fork tube 19 and the main tube 20. When deflated, it fits inside the recessed cavity. When inflated, it expands to a diameter of 25mm, which can apply a thrust of 0.5-1N to the fabric on both sides of the cut seam, widening the cut seam from ≤0.5mm to 2-3mm, exposing the thread ends.

[0047] The power linkage unit provides periodic inflation power to the auxiliary expansion unit, specifically including: The cylinder body 16 is made of aluminum alloy, with an outer diameter of 30mm, an inner diameter of 25mm, and a length of 50mm. It is fixed to the side of the support plate 15 by a bracket, forming a sealed cylinder cavity. The roughness of the inner wall of the cylinder cavity is Ra≤0.8μm, which is suitable for the sliding of the piston 29.

[0048] Piston 29 and sliding rod 24; Piston 29 is made of brass, with a diameter of 24.8mm and a thickness of 8mm. It is fitted with an O-ring (made of nitrile rubber, model O-ring 25×2.4) to achieve a seal and slides within the cylinder cavity of the inflation seat 16. Sliding rod 24 is made of 45# steel, with a diameter of 8mm and a length of 80mm. Its upper end is fixed to the center of the lower surface of piston 29 by threads, and its lower end slides through an 8.2mm guide hole at the bottom of the inflation seat 16, with the exposed part engaging with cam block 32.

[0049] The drive spring 30 is a compression spring (wire diameter 1mm, outer diameter 22mm, free length 35mm, stiffness 2N / mm), installed in the cylinder cavity of the air seat 16. Its upper end abuts against the lower surface of the piston 29, and its lower end abuts against the bottom of the cylinder cavity of the air seat 16, giving the piston 29 a downward preload force (about 5N).

[0050] Cam block 32; Cam block 32 is made of Q235B steel and is in the shape of an eccentric wheel (eccentricity 5mm). It is fixed to the periphery of pivot 17 by key connection and is located on the outside of support plate 15. It rotates synchronously with pivot 17 (the speed is the same as that of disc cutter 18, 7500rpm). It periodically pushes the lower end of sliding rod 24, causing piston 29 to reciprocate in cylinder cavity (stroke 10mm).

[0051] The top of the inflatable seat 16 is connected to the inner cavity of the connecting seat 23 via a first air tube (PU material, inner diameter 8mm). The upper end of the main tube 20 is connected to the inner cavity of the connecting seat 23 via a second air tube (PU material, inner diameter 8mm). The two ends of the air tubes are fixed with quick connectors to ensure airtightness. The airflow generated by the change in the cylinder volume of the inflatable seat 16 is buffered by the connecting seat 23 and then smoothly enters the airbag 28 to prevent the airbag 28 from expanding rapidly.

[0052] The working process of this equipment: 1. Lay a 1500mm wide and 2mm thick pure cotton fabric flat on the adsorption slide plate 3, start the vacuum pump, and the adsorption holes at the top of the adsorption slide plate 3 will generate negative pressure to fix the fabric flat on the surface of the adsorption slide plate 3, ensuring that the fabric is wrinkle-free and does not shift.

[0053] 2. Input the cutting trajectory (e.g., rectangular cut piece, 500mm long and 300mm wide) through the PLC controller, and set the parameters of each drive unit: suction slide plate 3 movement speed 2m / min, transverse seat movement speed 1.5m / min, lifting seat 7 descent speed 0.2m / min, disc cutter 18 rotation speed 7500rpm, and rotating plate 11 initial rotation angle 0° (cutting along the length direction).

[0054] 3. Activate the third drive unit 6 to drive the lifting seat 7 to descend, so that the blade of the disc cutter 18 contacts the fabric surface (the contact pressure is about 5N, which is adjusted by the buffer spring 10). At the same time, the lower end of the wax column 21 is in contact with the fabric surface, and the airbag 28 is in an uninflated state.

[0055] 4. Start the drive unit 12, the disc cutter 18 rotates at high speed, and at the same time the first drive unit 2 and the second drive unit 35 work together to drive the adsorption slide plate 3 and the transverse seat to move along the preset trajectory, and the disc cutter 18 continuously cuts the pure cotton fabric. When pivot 17 rotates, it synchronously drives cam block 32 to rotate. Every time cam block 32 rotates once (about 8ms), it periodically pushes sliding rod 24 to move upward, driving piston 29 to compress drive spring 30. Air in cylinder chamber of inflatable seat 16 is compressed, enters cavity of connecting seat 23 through first air pipe for buffering, and then enters airbag 28 through second air pipe, main pipe 20, and fork pipe 19. Airbag 28 inflates and opens the cutting slit (2-3mm wide), exposing the thread ends produced by cutting. When the cam block 32 moves away from the sliding rod 24, the drive spring 30 elastically resets, pushing the piston 29 and the sliding rod 24 to move downwards. The air in the airbag 28 flows back to the cylinder chamber of the inflation seat 16, and the airbag 28 contracts and resets, avoiding continuous compression of the fabric and causing deformation. Under the pre-tightening force of the elastic element 25, the wax column 21 always adheres to the fabric cutting surface and slides synchronously with the cutting trajectory, uniformly coating the exposed thread with wax layer thickness of about 0.1mm, increasing the weight of the thread (thread weight + wax layer weight ≥ 0.01g), preventing it from being driven away by airflow, and at the same time, the stickiness of the wax makes the thread adhere to the surface of the adsorption slide plate 3. As the wax column 21 gradually wears down during the sliding process, the elastic element 25 drives the clamping part 27 to move downwards, and the ball 26 rolls along the spiral rolling groove 34, causing the wax column 21 to rotate slowly (about 5 rpm), ensuring that the lower end face of the wax column 21 wears evenly and the coating width is stable at 1.5 mm, avoiding local wear that may cause coating omissions.

[0056] 5. After the cutting trajectory is completed, the third drive unit 6 drives the lifting seat 7 to rise, and the disc cutter 18 and wax column 21 are separated from the fabric; the vacuum pump stops working, the adsorption slide plate 3 releases the fabric, and the operator removes the cut piece. There are no loose threads on the cut surface of the cut piece, and the wax marks clearly mark the cutting position, which is convenient for positioning in the subsequent overlocking process.

[0057] 5. When the length of the wax column 21 is worn down to 10mm, replace it with a new wax column 21; regularly check the airtightness of the airbag 28, the status of the air pipe connection, and the motion accuracy of each drive unit to ensure stable operation of the equipment.

Claims

1. A garment production cutting device, comprising a base (1), an adsorption slide plate (3) disposed on the base (1) for fixing fabric, a mounting beam (4) transversely spanning the width of the base (1), a cutting mechanism disposed on the mounting beam (4), and a moving component for driving the cutting mechanism to move transversely, longitudinally, and vertically, wherein the cutting mechanism comprises a drive member (12), a pivot (17) driven to rotate by the drive member (12), and a disc cutter (18) fixed on the pivot (17), characterized in that: The cutting mechanism also includes a thread-end anti-scattering component that moves synchronously with the disc cutter (18), the thread-end anti-scattering component comprising: The connecting seat (23) is fixed on the mounting carrier of the cutting mechanism; The coating unit is located on the connector (23). Its coating end can fit the cut surface of the fabric and apply an anti-scattering medium to prevent the thread ends from detaching from the main body of the fabric. An auxiliary support unit is provided on the connecting seat (23) and located next to the coating unit. It is used to immediately open the fabric cutting seam after cutting so that the thread ends are exposed to adapt to the coating action of the coating unit. The power linkage unit is connected to the pivot (17) for transmission and is used to provide periodic motion power for the auxiliary spreading unit.

2. The cutting device according to claim 1, characterized in that: The coating unit includes a telescopic cylinder (22) connected vertically to the bottom of the connecting seat (23), a clamping part (27) slidably connected inside the telescopic cylinder (22), and a wax column (21) detachably connected to the lower end of the clamping part (27); the telescopic cylinder (22) is provided with a sliding cavity (33), and an elastic element (25) is installed inside the sliding cavity (33). The elastic element (25) provides a pre-tightening force to the clamping part (27) towards the fabric, so that the coating part always adheres to the surface of the fabric.

3. The cutting device according to claim 2, characterized in that: The outer wall of the clamping part (27) is fitted with a ball (26), and the inner wall of the sliding cavity (33) of the telescopic cylinder (22) is provided with a spiral rolling groove (34) that is compatible with the ball (26). During the wear process of the wax column (21), the wax column (21) is driven to rotate by the cooperation of the ball (26) and the spiral rolling groove (34).

4. The cutting device according to claim 1, characterized in that: The auxiliary expansion unit includes a main tube (20) fixedly connected to the connecting seat (23), two fork tubes (19) connected to the bottom of the main tube (20), and airbags (28) respectively installed at the ends of each fork tube (19). The airbags (28) are connected to the power linkage unit through the main tube (20). The main tube (20) is located between the disc cutter (18) and the coating unit.

5. The cutting device according to claim 4, characterized in that: The fork tubes (19) are symmetrically distributed on both sides of the axial direction of the disc cutter (18), and the extension direction of the fork tubes (19) is at an angle to the axial direction of the main tube (20). The downward end face of the fork tubes (19) is provided with a recessed cavity for accommodating the airbag (28).

6. The cutting device according to claim 1, characterized in that: The power linkage unit includes a cam block (32) fixed on a pivot (17), a sliding rod (24) rolling in contact with the cam block (32), a piston (29) connected to the sliding rod (24), and a cylinder (16) housing the piston (29). The cylinder (16) is connected to the main pipe (20) through an air passage, which is fixed on a connecting seat (23). When the pivot (17) rotates, it drives the cam block (32) to push the sliding rod (24) to reciprocate, so that the piston (29) forms a pumping / filling action in the cylinder (16).

7. The cutting device according to claim 1, characterized in that: The moving assembly includes a horizontal sliding seat (31) that is horizontally slidably connected to the mounting beam (4), a lifting seat (7) that is vertically slidably connected to a mounting plate (8) on one side of the horizontal sliding seat (31), a second driving unit (35) that drives the horizontal sliding seat (31) to move laterally along the mounting beam (4), and a third driving unit (6) that drives the lifting seat (7) to move vertically along the horizontal sliding seat (31).

8. The cutting device according to claim 1, characterized in that: The mounting carrier of the cutting mechanism includes a rotating plate (11) and a floating plate (9); the rotating plate (11) is fixedly connected to the bottom of the lifting seat (7), the pivot (17) is rotatably connected to the floating plate (9) through the support plate (15), a guide rod (13) is provided between the floating plate (9) and the rotating plate (11), a buffer elastic element (10) is sleeved on the outer periphery of the guide rod (13), the buffer elastic element (10) provides the floating plate (9) with a buffer pre-tightening force towards the fabric, the upper end of the guide rod (13) penetrates the rotating plate (11) and is threaded with a limit nut (14), a rotary motor (5) is also installed on the lifting seat (7), the rotary motor (5) drives the rotating plate (11).

9. The cutting device according to claim 1, characterized in that: The adsorption slide plate (3) is provided with a number of adsorption holes, and the adsorption holes are connected to the interface of the negative pressure generating device through the air passage; the base (1) is provided with a first driving unit (2) for driving the adsorption slide plate (3) to move linearly along the length direction of the base (1).

10. The cutting device according to claim 6, characterized in that: The cylinder (16) is equipped with a drive spring (30) which elastically abuts against the piston (29) and imparts potential energy to the piston (29) to move downward.

Images