Cloth stretching device

Abstract

The utility model discloses a cloth supporting and spreading device relates to cloth winding device. Including winding mechanism and supporting and spreading mechanism, winding mechanism rotatory connection is in the frame, its characterized in that: supporting and spreading mechanism is located the front of winding mechanism, the cloth is wound on winding mechanism after supporting and spreading behind supporting and spreading mechanism, supporting and spreading mechanism includes the suction assembly and a pair of unfolding assembly of being located on the frame, the unfolding assembly reciprocating movement along the width direction of cloth, every unfolding assembly all is equipped with a suction assembly, and the suction assembly moves with the unfolding assembly synchronization, two unfolding assembly alternate movement and the corresponding suction assembly stops suction cloth when unfolding assembly reset. This application has avoided the appearance of cloth surface indentation as far as possible, and because the whole flattening process is through the mode of negative pressure suction, the advantage that the surface coating of cloth is more destroyed.

Description

Technical Field

[0001] This utility model relates to a fabric winding device, and more particularly to a fabric spreading device. Background Technology

[0002] During the fabric winding process, a stretching operation is required to ensure a smooth and even surface. Only when the fabric surface is smooth and even can it be wound as flat as possible without wrinkles. Typically, fabric stretching devices are placed before the winding rollers, using traction to flatten and wind the fabric as much as possible. However, this clamping method can leave indentations on some fabric surfaces and may even damage the coating on coated fabrics, thus limiting its use. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a fabric stretching device.

[0004] This utility model is achieved by the following technical solution: a fabric spreading device, including a winding mechanism and a spreading mechanism, wherein the winding mechanism is rotatably connected to the frame, and the spreading mechanism is located in front of the winding mechanism, and the fabric is spread by the spreading mechanism and then wound around the winding mechanism. The spreading mechanism includes a suction component and a pair of spreading components mounted on a frame. The spreading components reciprocate along the width of the fabric. Each spreading component is equipped with a suction component. The suction components move synchronously with the spreading components. When the two spreading components move alternately and the spreading components are reset, the corresponding suction component stops suctioning the fabric.

[0005] The unfolding assembly includes a platform arranged on a frame along the winding direction of the fabric and a pair of flattening pressure strips. The platform has an installation cavity inside, and the pair of flattening pressure strips are located in the installation cavity and driven by a linear motor fixed in the installation cavity to move closer or further apart along the width direction of the fabric. The flattening pressure strips have cavities inside for installing the suction assembly, and ventilation holes are provided on the flattening pressure strips and communicate with the cavities. An elongated hole is provided on the platform, and the ventilation hole is exposed on the surface of the platform through the elongated hole.

[0006] The suction assembly includes a hose and a vacuum pump fixed on the frame. An air nozzle is provided on the outer wall of the flattening strip. The vacuum pump is connected to the outside of the air nozzle. The hose is arranged on the top of the cavity. One end of each hose is connected to the vent hole, and the other end of the hose is connected to the air nozzle through a connector.

[0007] The elongated holes are formed along the width of the fabric, and multiple sets of elongated holes are formed, with each set of elongated holes corresponding to the ventilation holes.

[0008] The winding mechanism includes a winding roller with retaining edges at both ends. The retaining edges are higher than the surface of the winding roller. An installation groove is formed on the retaining edges facing the center of the winding roller. A sliding piece is provided in the installation groove and moves along the installation groove. When the sliding piece moves to the bottom of the installation groove, it abuts against the surface of the winding roller. A tension spring is provided between the sliding piece and the bottom of the installation groove. When the winding roller winds up the fabric, the sliding piece presses against the edge of the fabric.

[0009] Compared to existing technologies, this invention utilizes the cooperation of a flattening component and a suction component, with a pair of flattening components working alternately, to continuously flatten the fabric before winding. In this application, the flattening process is achieved by using negative pressure provided by the suction component to keep the fabric constantly adhered to the surface of the flattening component. Therefore, it eliminates the need to clamp the edges of the fabric, minimizing indentations on the fabric surface. Furthermore, since the entire flattening process is performed using negative pressure suction, it causes less damage to the fabric surface coating. Attached Figure Description

[0010] Figure 1 This is a schematic cross-sectional view of the internal structure of the fabric spreading device in this utility model; Figure 2 This is a cross-sectional schematic diagram of the internal structure of the fabric spreading device in this utility model; Figure 3 This is a cross-sectional schematic diagram of the internal structure of the take-up roller of the fabric spreading device in this utility model; In the diagram: 1. Frame; 2. Platform; 3. Mounting cavity; 4. Linear motor; 5. Elongated hole; 6. Flattening strip; 7. Cavity; 8. Vacuum pump; 9. Hose; 10. Air nozzle; 11. Take-up roller; 12. Edge retainer; 13. Mounting groove; 14. Sliding plate; 15. Tension spring; 16. Fabric; 17. Vent hole. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0012] Reference Figure 1-3A fabric spreading device 16 includes a winding mechanism and a spreading mechanism. The winding mechanism is rotatably connected to a frame 1, and the spreading mechanism is located in front of the winding mechanism. After the fabric 16 is spread by the spreading mechanism, it is wound around the winding mechanism. In this embodiment, the spreading mechanism includes a suction component and a pair of spreading components mounted on the frame 1. The spreading components reciprocate along the width direction of the fabric 16. Each spreading component has a suction component, and the suction component moves synchronously with the spreading component. The two spreading components move alternately, and when the spreading component resets, the corresponding suction component stops suctioning the fabric 16. By using a pair of spreading components working alternately, only one set of spreading components works at a time. That is, when one set of spreading components spreads the fabric 16, the other set of spreading components resets, so that the two sets of spreading components work alternately, enabling uninterrupted spreading of the fabric 16.

[0013] The unfolding assembly includes a platform 2 arranged on the frame 1 along the winding direction of the fabric 16 and a pair of flattening pressure strips 6. The platform 2 has an internal mounting cavity 3. The pair of flattening pressure strips 6 are located within the mounting cavity 3 and are driven by a linear motor 4 fixed within the mounting cavity 3 to move closer or further apart along the width direction of the fabric 16. A cavity 7 is formed inside each flattening pressure strip 6 for mounting the suction assembly. A vent hole 17 is formed on each flattening pressure strip 6, communicating with the cavity 7. An elongated hole 5 is formed on the platform 2, and the vent hole 17 is exposed on the surface of the platform 2 through the elongated hole 5. In this embodiment, the unfolding assembly reset refers to the movement of the flattening pressure strips 6 of the same set of unfolding assemblies from the edge of the fabric 16 towards the center line of the fabric 16. That is, the process of the two flattening pressure strips 6 of the same set of unfolding assemblies approaching each other until they are completely close. In this embodiment, the flattening process refers to the two flattening pressure strips 6 of the same set of unfolding assemblies moving further apart, during which the suction assembly operates to achieve the flattening function. During the flattening process, the fabric 16 is always adsorbed onto the surface of the flattening component by the negative pressure provided by the suction component. Therefore, it is not necessary to clamp the edges of the fabric 16, which can minimize the occurrence of indentations on the surface of the fabric 16. Furthermore, since the entire flattening process is carried out by negative pressure suction, the damage to the coating on the surface of the fabric 16 is less.

[0014] In this embodiment, the suction assembly includes a flexible hose 9 and a vacuum pump 8 fixed on the frame 1. An air nozzle 10 is provided on the outer wall of the flattening strip 6. The flexible hose 9 is arranged on the top of the cavity 7, with one end of each hose 9 connected to a vent 17, and the other end connected to the air nozzle 10 via a connector. Multiple sets of elongated holes 5 are formed along the width of the fabric 16, each set corresponding to a vent 17. The vacuum pump 8 is connected to the air nozzle 10 via another set of independent flexible hoses 9. When the suction assembly is working, the vacuum pump 8 creates negative pressure at the vent 17 through the flexible hoses 9. The fabric 16 first passes through the platform 2 and is then wound by the winding mechanism. When the fabric 16 is laid out on the platform 2, it is sucked up by the negative pressure at the vent 17. As the flattening strip 6 moves from the middle of the fabric 16 to both sides, the wrinkles in the fabric 16 are spread out from the middle to both sides, making the fabric 16 smoother before winding. During the flattening process, the fabric 16 is always adsorbed onto the surface of the flattening component by the negative pressure provided by the suction component. Therefore, it is not necessary to clamp the edges of the fabric 16, which can minimize the occurrence of indentations on the surface of the fabric 16. Furthermore, since the entire flattening process is carried out by negative pressure suction, the damage to the coating on the surface of the fabric 16 is less.

[0015] In this embodiment, the winding mechanism includes a winding roller 11. Both ends of the winding roller 11 are provided with retaining edges 12, which are higher than the surface of the winding roller 11. A mounting groove 13 is formed on the retaining edges 12 facing the center of the winding roller 11. A sliding piece 14 is provided within the mounting groove 13 and moves along the groove. When the sliding piece 14 moves to the bottom of the groove 13, it abuts against the surface of the winding roller 11. A tension spring 15 is provided between the sliding piece 14 and the bottom of the groove 13. When the winding roller 11 winds up the fabric 16, the sliding piece 14 presses against the edge of the fabric 16. At this time, the sliding piece 14 can press the fabric 16 firmly onto the winding roller 11, reducing the movement of the fabric 16 during winding, reducing wrinkles in the fabric 16 during winding, and making the fabric 16 on the winding roller 11 smoother.

[0016] Compared to existing technologies, this invention utilizes the cooperation of a flattening component and a suction component, with a pair of flattening components working alternately, to continuously flatten the fabric 16 before winding. In this application, the fabric 16 is constantly adhered to the surface of the flattening component by the negative pressure provided by the suction component during the flattening process. Therefore, it is unnecessary to clamp the edges of the fabric 16, thus minimizing the risk of indentations on the fabric 16 surface. Furthermore, since the entire flattening process is performed using negative pressure suction, damage to the coating on the fabric 16 surface is minimized.

[0017] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fabric spreading device, comprising a winding mechanism and a spreading mechanism, wherein the winding mechanism is rotatably connected to a frame, characterized in that: The stretching mechanism is located in front of the winding mechanism, and the fabric is stretched by the stretching mechanism and then wound around the winding mechanism. The stretching mechanism includes a suction component and a pair of unfolding components mounted on a frame. The unfolding components reciprocate along the width of the fabric. Each unfolding component is equipped with a suction component. The suction component moves synchronously with the unfolding components. When the two unfolding components move alternately and the unfolding components are reset, the corresponding suction component stops sucking up the fabric. The unfolding assembly includes a platform arranged on the frame along the winding direction of the fabric and a pair of flattening pressure strips. The platform has an installation cavity inside, and the pair of flattening pressure strips are located in the installation cavity and are driven by a linear motor fixed in the installation cavity to move closer or further apart from each other along the width direction of the fabric. The flattening pressure strips have cavities inside for installing the suction assembly, and the flattening pressure strips have ventilation holes that communicate with the cavities. The platform has elongated holes, and the ventilation holes are exposed on the surface of the platform through the elongated holes. The suction assembly includes a hose and a vacuum pump fixed on the frame. An air nozzle is provided on the outer wall of the flattening strip. The hose is arranged on the top of the cavity. One end of each hose is connected to the vent hole, and the other end of the hose is connected to the air nozzle through a connector. The vacuum pump is connected to the outside of the air nozzle through another set of hoses.

2. The fabric spreading device according to claim 1, characterized in that: The elongated holes are formed along the width of the fabric, and multiple sets of elongated holes are formed, with each set of elongated holes corresponding to the ventilation holes.

3. The fabric spreading device according to claim 1, characterized in that: The winding mechanism includes a winding roller with retaining edges at both ends. The retaining edges are higher than the surface of the winding roller. An installation groove is formed on the retaining edges facing the center of the winding roller. A sliding piece is provided in the installation groove and moves along the installation groove. When the sliding piece moves to the bottom of the installation groove, it abuts against the surface of the winding roller. A tension spring is provided between the sliding piece and the bottom of the installation groove. When the winding roller winds up the fabric, the sliding piece presses against the edge of the fabric.

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