Efficient and automatic layered feeding device for stacked cloth

Abstract

The invention relates to a stacked cloth efficient automatic layering feeding device which comprises a cloth lifting unit, a cloth grabbing unit and a material taking unit, and the cloth lifting unit comprises a vertical lifting mechanism, a material supporting disc and a fixed supporting assembly; the cloth grabbing unit comprises an X-axis linear module, a Z-axis linear sliding table, a shifting piece limiting air cylinder, a laser range finder, a ventilation guide pipe, a floating plate, a bearing plate, a rectangular spring, a suction cup, a limiting plate, a pendulum bob block, a shifting piece, a swing shaft and a wire limiting column. The material taking unit comprises an extending air cylinder, a material pressing air cylinder, a material pressing plate, a material unfolding transverse rod, a bearing flat plate and an execution moving mechanism. By means of the composite structure design of layered pre-pressing, gap detection, precise adsorption and lower layer pressing and stable separation, single-layer reliable separation and stable picking of multiple types of stacked cloth are achieved, the single-layer separation success rate is increased, multi-layer mistaken picking caused by static electricity and adhesion is reduced, and the fabric application range is wider.

Description

Technical Field

[0001] This invention belongs to the field of fabric layering and picking technology, specifically relating to an efficient automatic layering and feeding device for stacked fabrics. Background Technology

[0002] In the automated production process of the sewing industry, fabric layering and precise picking are core links connecting cutting and sewing processes, directly affecting production efficiency and product quality. As industries such as apparel and home textiles upgrade towards intelligent manufacturing, the requirements for automation in fabric handling are increasing, especially in mass production scenarios. This necessitates rapid single-layer separation, stable picking, and fixed-point transfer of stacked fabrics to match the operating rhythm of high-speed sewing equipment. However, fabrics generally possess strong flexibility and significant differences in breathability. Some lightweight fabrics are also prone to interlayer adhesion due to electrostatic adsorption or fiber entanglement, posing a significant challenge to automated layering and picking technology. Currently, manual layering and picking methods are inefficient (only about 800 operations per person per hour) and prone to human error, making them insufficient to meet modern production needs. Developing efficient layering and picking devices adaptable to various fabric types has become an urgent industry requirement.

[0003] In the existing technology, the solutions for picking up fabric layers are mainly divided into three categories: (1) negative pressure suction cup adsorption solution: This solution uses a vacuum generator to create negative pressure inside the suction cup, and uses atmospheric pressure to adsorb and fix the fabric. The core structure includes a vacuum suction cup, an air tube and a pressure control system. It is suitable for denim, canvas and other fabrics with high density and poor breathability. It has been applied in some automated sewing equipment (such as the fabric gripping device disclosed in patent CN202321567890.1); (2) rubber wheel bonding solution: It uses a rubber wheel with an adhesive surface as the material picking component, and uses the rubber wheel to bond with the surface of the fabric. The adhesive force is used to pick up the material. The rubber wheel is usually made of wear-resistant rubber with a hardness of 40-60 degrees. Some equipment is equipped with an automatic cleaning mechanism for the rubber wheel to maintain the adhesiveness. This is commonly used in the initial separation of thin chemical fiber fabrics. (3) Needle-punching material picking scheme: The material is punctured by a roller or needle plate with fine needle teeth on the surface. The material is picked up by the mechanical interlocking of the needle teeth and the fiber. The needle tooth parameters are usually designed with a working angle of 35-45° and a density of 200-300 teeth / square inch. This is widely used in the processing of thick materials such as nonwoven fabrics, such as the nonwoven fabric combing and picking system disclosed in patent CN202321890123.4.

[0004] The existing technical solutions have obvious limitations and it is difficult to balance stability, economy and versatility: (1) The negative pressure suction cup adsorption solution has a very narrow applicability. For breathable fabrics such as silk and chiffon, negative pressure can easily penetrate the fabric and cause adsorption failure. For thin cotton and linen fabrics, the phenomenon of "double-layer adsorption" often occurs, and the success rate of single-layer picking is less than 65%. Moreover, this solution has high requirements for the adhesion between the suction cup and the fabric. The stability is significantly reduced when processing curved or irregularly shaped fabrics. (2) Although the rubber wheel pasting solution improves the picking problem of breathable fabrics, the adhesiveness of the rubber wheel will decrease with the use time. Usually, after 8 hours of continuous operation, the adhesion will be reduced. Replacement is required every 2-3 times a day, which not only increases the cost of rubber consumables (annual consumable costs account for about 15% of the total equipment cost), but also increases equipment downtime and reduces production efficiency; at the same time, fiber impurities are easily left on the surface of the rubber wheel, requiring frequent cleaning processes; (3) Although the needle-punching material picking scheme has a lower cost and is not affected by air permeability, the needle teeth are easy to damage the fabric surface (especially printed and jacquard fabrics), with a defect rate of more than 5%; and for highly elastic fabrics, the fabric is prone to slippage after the needle teeth puncture, and the picking and positioning error exceeds 0.5mm, which cannot meet the requirements of precision sewing. In summary, the existing solutions have not effectively solved the contradiction between fabric characteristics and picking requirements, and have defects such as poor stability, narrow applicability or high cost of use. Summary of the Invention

[0005] The purpose of this invention is to provide a highly efficient automatic layering and feeding device for stacked fabrics, so as to overcome the shortcomings of the prior art and better serve as a highly efficient automatic layering and feeding device for stacked fabrics.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows.

[0007] A high-efficiency automatic layered feeding device for stacked fabric includes a fabric lifting unit, a fabric gripping unit, and a material picking unit. The fabric lifting unit, fabric gripping unit, and material picking unit are all mounted on a profile frame. The fabric lifting unit includes a vertical lifting mechanism, a material tray, and a fixed support assembly. Both ends of the fixed support assembly are fixedly mounted on the profile frame. The lower part of the vertical lifting mechanism is mounted on the fixed support assembly, and the material tray is mounted on the upper part of the vertical lifting mechanism. The fabric gripping unit includes an X-axis linear module, a Z-axis linear slide, a paddle-limiting cylinder, a laser rangefinder, a ventilation duct, a floating plate, a receiving plate, a rectangular spring, a suction cup, a limiting plate, a pendulum block, a paddle, a swing shaft, and a guide rail limiting post. The X-axis linear module and the Z-axis linear slide are vertically arranged. The paddle-limiting cylinder, laser rangefinder, and ventilation duct are mounted on the lower part of the Z-axis linear slide. The rectangular spring is located on the Z-axis linear slide. The floating plate and the receiving plate are respectively located on the upper and lower parts of the rectangular spring at the middle positions of the lower part of the linear slide table; there are two paddles and swing shafts, which are symmetrically arranged on both sides of the suction cup; the pendulum block and the guide wire limiting post are located on the upper side of the rectangular spring; the material picking unit includes an extension cylinder, a pressing cylinder, a pressing plate, a spreading crossbar, a receiving plate, and an execution moving mechanism; the extension cylinder and the pressing cylinder are located in the middle of the upper guide rail; the pressing plate is located at the end of the pressing cylinder; and the spreading crossbar is installed on the upper part of the material lifting unit.

[0008] Furthermore, the vertical lifting mechanism and the material support tray are fastened together with screws and installed within the profile frame.

[0009] Furthermore, the vertical lifting mechanism is equipped with a servo motor or a stepper motor for driving.

[0010] Furthermore, the vertical lifting mechanism is driven by a synchronous belt, ball screw, or chain.

[0011] Furthermore, the fabric lifting unit is equipped with a through-beam laser sensor for position detection, and the through-beam laser sensor is located at the upper part of the fabric lifting unit.

[0012] Furthermore, the vertical lifting mechanism is equipped with limit switches, anti-pinch protection, motor overload protection, and a tray anti-tipping structure.

[0013] Furthermore, the pressure plate is made of a flexible sheet material.

[0014] In this device, the fabric stack is placed behind the support tray. The lifting mechanism, driven by a servo motor or stepper motor, achieves smooth lifting motion. Its transmission method can employ synchronous belt, ball screw, or chain drive to meet the speed, accuracy, and load requirements of different scenarios. The X-axis linear module provides precise horizontal positioning, enabling the gripping mechanism to move quickly and repeatably left and right above the fabric stack area. The Z-axis linear slide handles vertical feeding, and its high rigidity and high resolution ensure stable execution of pressing, pre-pressing, and adsorption actions. The layered pre-pressing assembly consists of a double-paddle structure, rectangular springs, a floating plate, and a receiving plate. Through the synchronous compression of the paddles on both sides, the top layer of the stacked fabric is locally lifted, creating controllable micro-gaps between layers, solving the problem of traditional flexible fabrics being tightly adhered and difficult to distinguish between layers. The rectangular springs and floating structure absorb deformation caused by differences in fabric thickness, making the pre-pressing action smoother and more adaptable.

[0015] The overall working logic of the gripping unit is as follows: First, the Z-axis linear slide drives the gripping module to move downwards; when the pre-compression component contacts the fabric, the two side paddles perform symmetrical squeezing actions, causing a locally controllable bulge to form on the upper layer of the fabric; then, the sensing component detects the gap of the bulge and sends a trigger signal, and the suction cup immediately starts negative pressure to complete the adsorption and separation of a single layer of fabric; finally, the gripping unit hands the adsorbed fabric over to the material handling unit for transport, and sends it to the subsequent designated work station or processing mechanism.

[0016] This modular structure not only enables reliable layering, rapid adsorption, and stable gripping of flexible fabrics, but also has excellent adaptability, making it suitable for fabrics of various thicknesses, materials, and stacking methods, significantly improving the efficiency and stability of automated fabric handling systems.

[0017] The core function of the material handling unit is to solve the common problems of interlayer adhesion and localized adsorption and extension during the handling of flexible fabrics, ensuring that the upper layer of fabric being handled can be fully separated from the lower layer, thereby achieving stable transfer of a single layer of fabric. This unit typically consists of an extension cylinder, a pressing cylinder, a pressing plate, a spreading crossbar, a receiving plate, and an actuating movement mechanism.

[0018] After the gripping unit lifts the target fabric, the fabric layers may stick together due to static electricity, fiber friction, or long-term stacking. At this point, the extension cylinder initiates its forward extension, pushing the pressure cylinder to the working position where the fabric is stacked. The pressure cylinder has a high-rigidity pressure plate with a flexible surface layer at its end, the front end of which is inserted into the gap between the gripped fabric and the underlying fabric. As the pressure cylinder moves downward, the pressure plate applies directional pressure to the underlying fabric, creating a stable constraint force that keeps it stationary during the subsequent separation process.

[0019] After the lower layer of fabric is compressed, the upper layer of fabric, adsorbed by the gripping unit, is reliably separated from the lower layer under negative pressure and guided by the mechanism. Subsequently, the gripping unit continues to move the upper layer of fabric forward, smoothly laying it onto the spreading crossbar. The spreading crossbar serves as a transition support and fabric shaping mechanism, effectively reducing folding, curling, or slippage of the fabric during its descent.

[0020] Once the fabric is accurately positioned on the unfolding crossbar, the picking unit moves along the guide rail to the receiving position directly below the crossbar. Then, the picking unit releases the fabric, allowing it to fall naturally under its own weight onto the receiving plate of the picking device. The receiving plate is typically made of low-friction material or equipped with guide edges to ensure smooth unfolding of the fabric after it falls.

[0021] Finally, the material handling unit, carrying the received single-layer fabric, transports the fabric to the initial workstation via a lateral or longitudinal moving mechanism, preparing it for the next cycle. This process is fully automated and can automatically adjust motion parameters according to the fabric size, stiffness, and thickness, improving the system's adaptability to different fabric types.

[0022] The beneficial effects of this invention are as follows: Compared with existing negative pressure adsorption, rubber wheel bonding, and needle piercing methods, this invention achieves reliable single-layer separation and stable pickup of various types of stacked fabrics through a composite structural design of layered pre-compression, gap detection, precise adsorption, and stable separation by pressing the lower layer. Its technical effects are mainly reflected in the following aspects: (1) Improved single-layer separation success rate: The double-paddle symmetrical pre-compression structure used in this invention can form controllable local bulges between fabric layers, creating a stable gap of 1.5-3.0 mm between the target layer and the lower layer. The laser rangefinder detects the height of the bulges in real time, enabling precise triggering of the adsorption action. Since adsorption occurs in the already formed gap area, rather than directly adhering to the flat fabric surface, the phenomenon of "double-layer adsorption" is greatly reduced. Actual test results show that for thin cotton, chemical fiber, and breathable fabrics, the single-layer separation success rate can reach 92%-97%; compared with the negative pressure direct adsorption scheme (approximately 65% ​​success rate), the improvement is approximately 30% or more. This effect stems from the local structural deformation formed by the pre-compression component, which changes the interlayer separation from "depending on fabric characteristics" to "being actively creating gaps by the mechanism," reducing the impact of material differences on system stability.

[0023] (2) Reducing multi-layer mis-picking caused by static electricity and adhesion: Addressing the problem of interlayer adhesion in thin fabrics due to static electricity and fiber entanglement, this invention provides a reverse fixing force to the non-target layer before adsorption via a lower layer pressing mechanism, preventing the lifted fabric from moving the lower layer. This structure reduces the probability of mis-picking caused by interlayer adhesion to below 3%, significantly better than the 8%–12% multi-layer mis-picking rate caused by adhesive decay after the rubber wheel bonding solution's usage period.

[0024] (3) Wider range of applicable fabrics: The layering action of this invention is mainly based on mechanical extrusion and gap detection, which is not directly related to the breathability of the fabric. Therefore, it maintains stable performance for the following fabrics: High breathability fabrics (chiffon, silk, etc.), negative pressure suction cups often fail to adsorb due to suction penetration, but this solution can still maintain a success rate of more than 90%; Lightweight chemical fiber fabrics, rubber roller pasting is prone to misoperation due to insufficient or excessive adhesion, but this invention does not rely on adhesive materials and its stability is not affected; Irregularly shaped pieces or curved fabrics, because the pre-compression structure can automatically fit small height differences, the layering accuracy is not affected by local undulations of the fabric.

[0025] (4) Reduced risk of damage to fabric surface: Unlike needle-punched structures that rely on mechanical puncture for pickup, all actions of this invention are based on extrusion molding and vacuum adsorption: it does not contact the internal structure of the fabric fibers; it does not produce local holes or tears; and it has no destructive effect on the surface of printed, jacquard, and easily snagging fabrics. According to experimental statistics, the fabric surface damage rate can be controlled below 0.2%, which is significantly lower than the damage rate of about 5% of the needle-punching scheme.

[0026] (5) Reduced consumable costs and maintenance frequency: The rubber wheel solution requires regular cleaning and replacement of the sticky wheel surface, while all core actions of this invention rely on mechanical structures and sensors, eliminating the need for easily consumable sticky materials: the annual consumable cost is expected to be reduced by more than 80%; the downtime caused by equipment maintenance is reduced by about 40%; the rectangular spring and floating mechanism in the pre-compression component are designed to have a lifespan of more than 1 million cycles, which can meet the usage requirements of typical sewing production lines.

[0027] (6) Improved overall pickup and positioning accuracy: Since the layering, adsorption, and separation actions are controlled by the linkage between laser detection and position limiting components, the pickup position deviation is mainly determined by the accuracy of the linear module. Measured stability: Pickup height repeatability: ±0.1 mm; Placement position repeatability: ±0.3 mm; Compared with the 0.5–1.0 mm deviation caused by unstable contact, viscosity decay, or puncture position offset in rubber wheels and needle-punched structures, this invention significantly improves positioning reliability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the device structure used in the embodiments of the present invention.

[0029] Figure 2 This is a schematic diagram of the device structure used in the embodiments of the present invention.

[0030] Figure 3 This is a schematic diagram of the device structure used in the embodiments of the present invention.

[0031] Figure 4 This is a schematic diagram of the device structure used in the embodiments of the present invention.

[0032] Figure 5 This is a schematic diagram of the device structure used in the embodiments of the present invention.

[0033] The markings in the diagram are as follows: 1. Fabric lifting unit; 2. Fabric gripping unit; 3. Material picking unit; 4. Profile frame; 5. Fabric; 6. Through-beam laser sensor; 7. Guide rail; 101. Vertical lifting mechanism; 102. Material tray; 103. Fixed support assembly; 201. X-axis linear module; 202. Z-axis linear slide; 203. Paddle limiter; 204. Cylinder laser rangefinder; 205. Ventilation duct; 206. Floating plate; 207. Receiving plate; 208. Rectangular spring; 209. Suction cup; 210. Limiting plate; 211. Pendulum block; 212. Paddle; 213. Swing shaft; 214. Wire guide limit post; 301. Extending cylinder; 302. Pressing cylinder; 304. Pressing plate; 303. Expansion crossbar. Detailed Implementation

[0034] The specific embodiments of the present invention will now be described in conjunction with the accompanying drawings and examples to provide a better understanding of the invention. Example

[0035] like Figures 1 to 5 The stacked fabric high-efficiency automatic layered feeding device shown includes a fabric lifting unit 1, a fabric gripping unit 2, and a material picking unit 3, all of which are mounted on a profile frame 4. The fabric lifting unit 1 includes a vertical lifting mechanism 101, a material tray 102, and a fixed support assembly 103. The fixed support assembly 103 is fixedly mounted on the profile frame 4 at both ends. The lower part of the vertical lifting mechanism 101 is mounted on the fixed support assembly 103, and the material tray 102 is mounted on the upper part of the vertical lifting mechanism 101. The vertical lifting mechanism 101 and the material tray 102 are fastened together with screws and installed within the profile frame 4, giving the overall structure high stability and load-bearing capacity. After the fabric 5 is stacked on the material tray 102, the vertical lifting mechanism 101 achieves smooth lifting motion driven by a servo motor or stepper motor. Its transmission method can use synchronous belt, ball screw, or chain drive to meet the speed, accuracy, and load requirements of different scenarios.

[0036] To ensure real-time controllability of the fabric's upper surface height, the fabric lifting unit 1 is equipped with a through-beam laser sensor 6 for position detection. The through-beam laser sensor 6 is located at the upper part of the fabric lifting unit 1. When the fabric on the upper surface of the material tray 102 rises to the preset picking height and blocks the laser beam, the control system immediately stops the lifting action, achieving precise positioning of the target height. This sensor has the characteristics of fast response and strong anti-interference ability, and can adapt to actual working conditions such as changes in fabric color, texture, and ambient lighting.

[0037] During continuous operation, whenever the upper layer of fabric is removed by the fabric grabbing unit, the vertical lifting mechanism 101 automatically executes height compensation logic, raising again to bring the remaining fabric back to the optimal grabbing height. This process is controlled in a closed loop, requiring no manual intervention, ensuring that the grabbing position remains consistent as the fabric stack height decreases layer by layer. This not only improves the stability and repeatability of the grabbing operation but also significantly enhances the overall automation level and the continuity of the operation cycle.

[0038] Furthermore, to improve the reliability of the equipment in industrial environments, the vertical lifting mechanism 101 can be designed with limit switches, anti-pinch protection, motor overload protection, and a tray anti-tipping structure to avoid uneven load problems caused by abnormal operation or uneven stacking of fabric. The unit's parameters can also be adjusted according to the weight, softness, and stacking height of different types of fabric, giving it greater adaptability and scalability.

[0039] like Figures 2 to 4 As shown, the fabric gripping unit 2 includes an X-axis linear module 201, a Z-axis linear slide 202, a paddle-limiting cylinder 203, a laser rangefinder 204, a ventilation duct 205, a floating plate 206, a receiving plate 207, a rectangular spring 208, a suction cup 209, a limiting plate 210, a pendulum block 211, a paddle 212, a swing shaft 213, and a guide wire limiting post 214. The X-axis linear module 201 and the Z-axis linear slide 202 are vertically arranged. The paddle-limiting cylinder 203, the laser rangefinder 204, and the ventilation duct 205 are installed at the lower part of the Z-axis linear slide 202. The rectangular spring 208 is located at the bottom of the Z-axis linear slide 202. The floating plate 206 and the receiving plate 207 are respectively positioned on the upper and lower parts of the rectangular spring 208 at the lower center of the linear slide 202. Two paddles 212 and swing shafts 213 are symmetrically positioned on both sides of the suction cup 209. The pendulum block 211 and the guide wire limiting post 214 are located on the upper side of the rectangular spring 208. The X-axis linear module 201 provides precise horizontal positioning, enabling the gripping mechanism to move quickly and repeatedly left and right above the fabric stacking area. The Z-axis linear slide 202 handles vertical feeding, and its high rigidity and high resolution ensure stable execution of pressing, pre-pressing, and suction actions.

[0040] The layered pre-compression assembly consists of a double-paddle structure, a rectangular spring 208, a floating plate 206, and a receiving plate 207 working together. Through the synchronous compression of the paddles 212 on both sides, the top layer of the stacked fabric is locally lifted, creating a controllable micro-gap between the layers. This solves the problem of traditional flexible fabrics being tightly adhered and difficult to distinguish between layers. The rectangular spring 208 and the floating structure can absorb the deformation caused by differences in fabric thickness, making the pre-compression action smoother and more adaptable.

[0041] Sensors such as laser rangefinders monitor the layering status in real time. When a local bulge reaches the set trigger height, the sensor sends a signal to the control system, triggering the negative pressure adsorption component to start working. The suction cup generates a stable negative pressure through the air duct, precisely adsorbing the single layer of fabric in the bulge area without disturbing the underlying fabric. The guide and limiting component, consisting of a limiting plate, a swing shaft, and a pendulum block, constrains the movement angle and path of the lever and the floating plate, ensuring consistent action and reliable precision throughout the entire grasping process.

[0042] The overall working logic of the gripping unit is as follows: First, the Z-axis linear slide drives the gripping module to move downwards; when the pre-compression component contacts the fabric, the two side paddles perform symmetrical squeezing actions, causing a locally controllable bulge to form on the upper layer of the fabric; then, the sensing component detects the gap of the bulge and sends a trigger signal, and the suction cup immediately starts negative pressure to complete the adsorption and separation of a single layer of fabric; finally, the gripping unit hands the adsorbed fabric over to the material handling unit for transport, and sends it to the subsequent designated work station or processing mechanism.

[0043] This modular structure not only enables reliable layering, rapid adsorption, and stable gripping of flexible fabrics, but also has excellent adaptability, making it suitable for fabrics of various thicknesses, materials, and stacking methods, significantly improving the efficiency and stability of automated fabric handling systems.

[0044] like Figure 5 As shown, the core function of the material handling unit 3 is to solve the common problems of interlayer adhesion and localized adsorption and extension during the gripping process of flexible fabric, ensuring that the upper layer of fabric being gripped can be fully separated from the lower layer of fabric, thereby achieving stable transfer of single-layer fabric. The material handling unit 3 includes an extension cylinder 301, a pressing cylinder 302, a pressing plate 304, a spreading crossbar 303, a receiving plate, and an execution and movement mechanism. The extension cylinder 301 and the pressing cylinder 302 are located in the middle of the upper guide rail 7, the pressing plate 304 is located above the pressing cylinder 302, and the spreading crossbar 303 is installed on the upper part of the fabric lifting unit 1.

[0045] After the gripping unit lifts the target fabric, the fabric layers may stick together due to static electricity, fiber friction, or long-term stacking. At this time, the extension cylinder 301 extends forward, pushing the pressing cylinder 302 to the working position where the fabric is stacked. The end of the pressing cylinder 302 is equipped with a high-rigidity pressing plate covered with a flexible surface layer, the front end of which is inserted into the gap area between the gripped fabric and the lower layer of fabric. As the pressing cylinder moves downward, the pressing plate applies directional pressure to the lower layer of fabric, forming a stable constraint force, keeping it fixed in place during the subsequent separation action.

[0046] After the lower layer of fabric is compressed, the upper layer of fabric, adsorbed by the gripping unit, is reliably separated from the lower layer under negative pressure and guided by the mechanism. Subsequently, the gripping unit continues to move the upper layer of fabric forward, smoothly laying it onto the spreading crossbar. The spreading crossbar serves as a transition support and fabric shaping mechanism, effectively reducing folding, curling, or slippage of the fabric during its descent.

[0047] Once the fabric is accurately positioned on the unfolding crossbar 303, the picking unit 3 moves along the guide rail 7 to the receiving position directly below the crossbar. Then, the picking unit releases the fabric, allowing it to fall naturally under its own weight onto the receiving plate of the picking device. The receiving plate is typically made of low-friction material or equipped with guide edges to ensure smooth unfolding of the fabric after it falls.

[0048] Finally, the material handling unit, carrying the received single-layer fabric, transports the fabric to the initial workstation via a lateral or longitudinal moving mechanism, preparing it for the next cycle. This process is fully automated and can automatically adjust motion parameters according to the fabric size, stiffness, and thickness, improving the system's adaptability to different fabric types.

[0049] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A highly efficient automatic layered feeding device for stacked fabrics, characterized in that: Including cloth lifting unit (1), cloth grabbing unit (2) and taking material unit (3), cloth lifting unit (1), cloth grabbing unit (2) and taking material unit (3) are all installed on profile frame (4), cloth lifting unit (1) includes vertical lifting mechanism (101), material supporting disc (102) and fixed support assembly (103), both ends of fixed support assembly (103) are fixedly installed on profile frame 4, the lower part of vertical lifting mechanism 101 is installed on fixed support assembly (103), material supporting disc (102) is installed at the upper part position of vertical lifting mechanism 101, cloth grabbing unit (2) includes X axis linear module (201), Z axis linear slide (202), dial piece limiting cylinder (203), laser range finder (204), air duct (205), floating plate (206), receiving plate (207), rectangular spring (208), suction cup (209), limiting plate (210), pendulum block (211), dial piece (212), swing shaft (213) and wire limiting column (214), X axis linear module (201), Z axis linear slide (202) are vertically arranged, dial piece limiting cylinder (203), laser range finder (204), air duct (205) are installed at the lower part position of Z axis linear slide (202), rectangular spring (208) is arranged at the lower part intermediate two side positions of Z axis linear slide (202), floating plate (206), receiving plate (207) are respectively arranged at the upper part and lower part positions of rectangular spring (208), dial piece (212), swing shaft (213) are provided with two and are symmetrically arranged at the two side positions of suction cup (209), pendulum block (211) and wire limiting column (214) are arranged at the upper side of rectangular spring (208), taking material unit (3) includes extension cylinder (301), pressing cylinder (302), pressing plate (304), material spreading cross bar (303), receiving flat plate and execution moving mechanism, extension cylinder (301), pressing cylinder (302) are arranged at the intermediate position of upper guide rail (7), pressing plate (304) is arranged at the terminal position of pressing cylinder (302), material spreading cross bar (303) is installed at the upper part position of cloth lifting unit 1.

2. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: Vertical lifting mechanism 101 and material supporting disc (102) are fastened by screws and installed in profile frame 4.

3. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: The vertical lifting mechanism (101) is provided with a servo motor or a stepping motor for driving.

4. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: The vertical lifting mechanism (101) adopts synchronous belt, ball screw or chain drive.

5. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: The cloth lifting unit (1) is equipped with a position detection of the reflective laser sensor 6, and the reflective laser sensor (6) is arranged at the upper part position of the cloth lifting unit (1).

6. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: The vertical lifting mechanism (101) is provided with a limit switch, an anti-pinch protection, a motor overload protection and a tray anti-overturning structure.

7. The high-efficiency automatic layering and feeding device for stacking materials according to claim 1, characterized in that: The pressing plate (304) adopts a flexible surface layer plate.

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