A drawing and alignment device and method for spatial fabric

Abstract

A drawing and alignment device and method for spatial fabric is disclosed, relating to the field of spatial fabric production equipment and methods. The device includes a support frame, on which are mounted a front constant-speed feed roller pair, a rear constant-speed output roller pair, a drawing and alignment device, and a power source. The front constant-speed feed roller pair includes a pair of mutually cooperating, adjustable-distance drive rollers; the rear constant-speed output roller pair also includes a pair of mutually cooperating, adjustable-distance drive rollers; the drive rollers are connected to the power source, which drives them to rotate; the drawing and alignment device is positioned between the front constant-speed feed roller pair and the rear constant-speed output roller pair. The method involves: the drive rollers clamping the spatial fabric at the top and bottom and conveying it forward at a constant speed; the lower layer of the spatial fabric is buffered by the drawing and alignment device, aligning the drawing threads with the connection points of the upper and lower layers, causing them to come into contact; the rear constant-speed output roller pair clamps the spatial fabric and conveys it forward at a constant speed. This invention eliminates the need for manual alignment during spatial fabric cutting, saving labor and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of production apparatus and methods for spatial fabrics, specifically to a drawing and alignment device and method for spatial fabrics. Background Technology

[0002] We know that space fabric, also known as filament fabric, uses 3D weaving technology for its base fabric. It is formed by weaving and drawing filaments between two layers of mesh fabric, creating a 3D integrated structure. The upper surface of the upper mesh fabric and the lower surface of the lower mesh fabric are provided with a PVC airtight layer or a TPU airtight coating to achieve an airtight effect. The PVC or TPU airtight layer is mostly made by bonding a PVC film or TPU film with an adhesive. For example, patent applications CN202010811026.X (application date: 2020-08-13, title: An invention patent for a high-strength space fabric material and its preparation method) and CN202210784902.3 (application date: 2022-07-06, title: An invention patent for an anti-slip space fabric and its preparation process) disclose the aforementioned technical features of space fabric. In existing spatial fabric production processes, coating machines are used to adhere PVC or TPU films. For example, the patent applicant uses the Shunlong 3-meter graphic coating machine manufactured by Foshan Gaoming Huilong Machinery Co., Ltd. to adhere PVC or TPU films. The structure of the Shunlong 3-meter graphic coating machine is shown in the attached diagram. Figure 1 As shown. During the process of attaching PVC or TPU film to the upper and lower sides of the base fabric's upper and lower mesh layers, due to processing requirements, the upper and lower mesh layers naturally overlap, and the filaments between them are pulled taut from top to bottom. After the space fabric is wound into a roller, the connection points between the filaments and the upper and lower mesh layers are staggered at equal intervals (filament length). When manufacturing products such as surfboards and kayaks, space fabric of the same size as the upper and lower mesh layers needs to be cut on the space fabric roller according to the size requirements, with the filaments perpendicular to the space fabric. That is, after cutting the upper and lower mesh layers of the same size, air is inflated between the upper and lower mesh layers, and when the filaments are perpendicular to the space fabric, the upper and lower mesh layers are vertically opposite each other, and the space fabric occupies a rectangular space. During the cutting process, it is necessary to manually align the filaments with the connection points of the upper and lower mesh layers before cutting, which is cumbersome, time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device and method for aligning the wires of a space fabric before it is wound into a roll (the connection points between the wires and the upper and lower mesh fabrics are aligned downwards). After being wound into a roll, it can be cut without manual alignment, thus saving labor and improving production efficiency.

[0004] The technical solution adopted by this invention to overcome the shortcomings of the prior art is as follows:

[0005] A drawing and alignment device for a spatial fabric includes a support frame, characterized in that the support frame is provided with a front constant-speed feed roller pair, a rear constant-speed output roller pair, a drawing and alignment device, and a power source.

[0006] The aforementioned front constant speed feed roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The front constant speed feed roller pair is used to clamp the spatial fabric and convey it forward at a set speed. The transmission rollers are connected to a power source, and the power source drives the transmission rollers to rotate.

[0007] The rear constant speed fabric output roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The rear constant speed fabric output roller pair is used to clamp the spatial fabric and convey it backward at a set speed. The transmission rollers are connected to a power source, and the power source drives the transmission rollers to rotate.

[0008] The wire drawing alignment device is located between the front constant speed feed roller pair and the rear constant speed output roller pair. The wire drawing alignment device is used to align the wire drawing with the connection point of the upper and lower mesh fabrics.

[0009] The specific structure of the front constant-speed feed roller assembly described in this invention is as follows: a freely rotatable lower drive roller is horizontally mounted on a support frame; slide rails are respectively mounted on the supports at both ends of the lower drive roller; an adjusting slider that cooperates with the slide rails and can slide freely up and down is mounted above the lower drive roller; two upper drive rollers that can rotate freely and cooperate with the lower drive rollers are mounted on the two adjusting sliders; a lifting power source is respectively mounted on the support frame above the two adjusting sliders, and the lifting power source is connected to the adjusting slider to control the position of the adjusting slider on the slide rails. The power source is mounted on the support frame outside the adjusting slider, and the right end of the lower drive roller is connected to the output shaft of the power source via a coupling. The power source includes a servo motor or a stepper motor, which is connected to a transmission box, and the output shaft of the transmission box is the output shaft of the power source. The upper drive roller 4 and the lower drive roller 5 extend to the right side of the adjusting slider, and synchronous gears with a transmission ratio of 1:1 are respectively mounted on the upper and lower drive rollers on the right side of the adjusting slider.

[0010] The specific structure of the rear constant speed feed roller pair described in this invention is the same as that of the front constant speed feed roller pair.

[0011] The specific structure of the wire drawing and alignment device described in this invention is as follows: an alignment mounting frame is provided on the bracket between the front constant speed feed roller pair and the rear constant speed output roller pair. An upper alignment roller is provided on the upper part of the alignment mounting frame. A lower alignment roller that can move up and down is provided on the mounting frame below the upper alignment roller via a height adjustment device. An upper alignment drive motor and a lower alignment drive motor that drive the upper and lower alignment rollers to rotate are respectively connected to the upper alignment roller and the lower alignment roller.

[0012] The height adjustment device described in this invention has a mounting groove on the alignment mounting frame below the upper alignment roller. An adjustable slide block, which can slide up and down, is located within the mounting groove. The lower alignment roller is mounted on the adjustable slide block. A connecting plate is located on the adjustable slide block below the lower alignment roller. A lifting device is located between the middle of the connecting plate and the alignment mounting frame below it. The lifting device, via the connecting plate, drives the adjustable slide block to slide up and down within the mounting groove, thereby moving the lower alignment roller up and down and adjusting the distance between the upper and lower alignment rollers. The upper alignment drive motor is mounted on the alignment mounting frame; the lower alignment drive motor is mounted on the adjustable slide block.

[0013] The lifting device described in this invention is a hand-cranked screw jack or a manual screw jack. It can also be a high-precision electric lifting device.

[0014] The upper and lower drive rollers described in this invention are rubber rollers. The surface of the rubber roller can undergo elastic deformation under force, which makes it less likely to damage the space fabric and can increase the friction between the roller and the space fabric.

[0015] In this invention, the friction coefficient of the upper alignment roller is greater than that of the lower alignment roller. Specifically, the upper alignment roller is a rubber roller, and the lower alignment roller is a plastic roller or a steel roller; the rubber used in the rubber roller is a soft rubber with a Shore hardness of 15-30 HA, preferably 20 HA. Soft rubber has good viscoelasticity and high friction with the space fabric.

[0016] The method for aligning the threads of a spatial fabric using the aforementioned thread-aligning device is characterized by comprising the following steps:

[0017] Step 1: Input the starting end of the space fabric between the two drive rollers of the front constant speed feed roller pair. The drive rollers clamp the space fabric from above and below and convey the space fabric forward at a constant speed.

[0018] Step 2: The lower layer of the spatial fabric output from the front constant speed feed roller is buffered by the wire drawing alignment device to align the wire drawing with the connection point of the upper and lower fabric layers;

[0019] Step 3: After the upper and lower fabric layers are attached together at their respective drawing connection points, the fabric is fed in from the rear side of the two drive rollers of the rear constant speed fabric output roller pair. The two drive rollers of the rear constant speed fabric output roller pair clamp the space fabric from above and below and convey the space fabric forward at a constant speed.

[0020] The space fabric output from the rear constant speed fabric output roller is the space fabric directly opposite the connection point between the drawing and the upper and lower fabric layers. It can be cut and used directly, or it can be wound into a roller and stored.

[0021] Step 2 is as follows: The lower layer of the spatial fabric output from the front constant-speed feed roller pair is fed between the upper and lower alignment rollers from the front side. The lower layer output from the rear side of the upper and lower alignment rollers bends back and passes between the upper and lower alignment rollers, then is fed into the rear side of the rear constant-speed output roller pair. The upper drive roller rotates counterclockwise, and the lower drive roller rotates clockwise and counterclockwise. The front constant-speed feed roller pair and the rear constant-speed output roller pair can convey the spatial fabric from back to front at a constant speed. The upper alignment roller rotates clockwise, and the lower alignment roller rotates counterclockwise. The upper alignment roller causes the lower layer in contact with it to be conveyed backward, and the lower alignment roller generates a backward pulling force on the lower layer in contact with it. The friction between the rear constant-speed output roller pair and the lower layer is greater than the friction between the yarn alignment device and the lower layer after it bends back from the rear side of the upper and lower alignment rollers. The rear constant-speed output roller pair pulls the lower layer and the upper layer forward together.

[0022] In steps 1 and 3 of this invention, adjusting the distance between the upper and lower drive rollers can adjust the pressure and friction between the front constant-speed feed roller pair and the rear constant-speed output roller pair and the space fabric; in step 2, adjusting the distance between the upper and lower alignment rollers can adjust the pressure and friction between the upper and lower alignment rollers on the two lower fabric layers.

[0023] In this invention, the linear velocity of the lower alignment roller is greater than the linear velocities of both the upper and lower drive rollers; the upper alignment roller...

[0024] The space fabric described in this invention is an anti-slip space fabric.

[0025] The connection points of the same drawing thread of the spatial fabric produced using the device and method provided by this invention with the upper fabric layer and the lower fabric layer are directly facing downwards. When cutting, there is no need for manual alignment, saving labor and improving production efficiency. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of the present invention.

[0027] Figure 2 yes Figure 1 Top view.

[0028] Figure 3 yes Figure 1 AA sectional view.

[0029] Figure 4 This is a schematic diagram of the wire drawing alignment device in this invention.

[0030] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0031] Figure 6 This is a structural diagram of the present invention in use. Detailed Implementation

[0032] like Figures 1-5 The shown space fabric drawing and alignment device includes a support 1, on which a front constant speed feed roller pair, a rear constant speed output roller pair, a drawing and alignment device and a power source 11 are provided;

[0033] The aforementioned front constant speed feed roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The front constant speed feed roller pair is used to clamp the spatial fabric and convey it forward at a set speed. The transmission rollers are connected to the power source 11, and the power source drives the transmission rollers to rotate.

[0034] The rear constant speed fabric output roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The rear constant speed fabric output roller pair is used to clamp the spatial fabric and convey it backward at a set speed. The transmission rollers are connected to the power source 11, and the power source drives the transmission rollers to rotate.

[0035] The wire drawing alignment device is located between the front constant speed feed roller pair and the rear constant speed output roller pair. The wire drawing alignment device is used to align the wire drawing with the connection point of the upper and lower mesh fabrics.

[0036] The specific structure of the rear constant-speed fabric output roller pair is as follows: A freely rotatable lower transmission roller 5 is horizontally mounted on the support 1. Slide rails are respectively mounted on the support 1 at both ends of the lower transmission roller 5. An adjusting slider 19, which cooperates with the slide rails and can slide freely up and down, is mounted above the lower transmission roller 5. An upper transmission roller 4, which can rotate freely and cooperates with the lower transmission roller 5, is mounted on the two adjusting sliders 19. The upper transmission roller 4 and the lower transmission roller 5 are parallel to each other. Lifting power sources 3 and 7 are respectively mounted on the support 1 above the two adjusting sliders 19. The lifting power sources can be any type of hydraulic cylinder, pneumatic cylinder, or lead screw motor. The lifting power sources 3 and 7 are respectively connected to the adjusting sliders below them. The lifting power sources drive the adjusting sliders to move up and down, controlling the position of the adjusting sliders on the slide rails, thereby adjusting the distance between the upper and lower transmission rollers. The power source 11 is mounted on the support outside the adjusting sliders, and the right end of the lower transmission roller 5 is connected to the output shaft of the power source via a coupling. Power source 11 includes a servo motor or a stepper motor, which is connected to transmission box 10. The output shaft of transmission box 10 is the output shaft of the power source, and the transmission box has two output shafts. Upper transmission roller 4 and lower transmission roller 5 extend to the right side of the adjusting slider. The upper and lower transmission rollers on the right side of the adjusting slider are respectively equipped with synchronous gears 8 and 9 that cooperate with each other and have a transmission ratio of 1:1. Tooth height is 6-20mm, preferably 10-15mm. The distance between the upper drive roller 4 and the lower drive roller 5 is 5. Within mm Adjustment ensures that synchronous gears 8 and 9 remain engaged and do not affect operation. The specific structure of the front constant-speed feed roller pair is the same as that of the rear constant-speed output roller pair.

[0037] The specific structure of the wire drawing and alignment device described in this invention is as follows: an alignment mounting frame 14 located on the lower side of the front constant speed feed roller pair and the rear constant speed output roller pair is provided on the support 1 between the two. An upper alignment roller 13 parallel to the transmission roller and freely rotatable is provided on the upper alignment mounting frame 14. A lower alignment roller 15 that can be moved up and down and is matched with the upper alignment roller is provided on the alignment mounting frame below the upper alignment roller 13 via a height adjustment device. An upper alignment drive motor 12 and a lower alignment drive motor 2 that drive the upper alignment roller 13 and the lower alignment roller 15 to rotate are respectively connected to the upper alignment roller 13 and the lower alignment roller 15. The height adjustment device consists of mounting grooves 18 on both sides of the alignment mounting frame 14 below the upper alignment roller 13. Adjustable sliding blocks 17, which can slide up and down, are located within the mounting grooves 18. The lower alignment roller 15 is rotatably mounted on the adjusting sliding blocks 17. Connecting plates 16 are provided on the two adjusting sliding blocks 17 below the lower alignment roller 15. A lifting device 6 is located between the lower center of the connecting plate 16 and the alignment mounting frame 14 below it. The lifting device 6 can be a hand-cranked screw jack, a screw jack, or other high-precision electric lifting devices. The lifting device 6, via the connecting plate 16, drives the two adjusting sliding blocks to slide up and down within the mounting grooves, thereby moving the lower alignment roller up and down and adjusting the distance between the upper and lower alignment rollers. The upper alignment drive motor 12 is mounted on the alignment mounting frame 14; the lower alignment drive motor 2 is mounted on the adjusting sliding blocks. The upper and lower drive rollers are rubber rollers. The surface of the rubber roller can undergo elastic deformation under force, which is less likely to damage the space fabric and can increase the friction between the roller and the space fabric. The friction coefficient of the upper alignment roller is greater than that of the lower alignment roller; specifically, the upper alignment roller is a rubber roller, and the lower alignment roller is a plastic roller or a steel roller; the rubber used in the rubber roller is a soft rubber with a Shore hardness of 15-30 HA, preferably 20 HA, as soft rubber has good viscoelasticity and high friction with the space fabric.

[0038] The method for aligning the threads of a spatial fabric using the aforementioned thread-aligning device is characterized by comprising the following steps:

[0039] Step 1: Input the starting end of the finished space fabric from the rear side of the two drive rollers of the front constant speed feed roller pair. The two drive rollers clamp (tighten) the space fabric from above and below and convey the space fabric forward at a constant speed.

[0040] Step 2: The lower layer of the spatial fabric output from the front constant speed feed roller is buffered by the wire drawing alignment device to align the wire drawing with the connection points of the upper and lower fabric layers vertically;

[0041] Step 3: Place the same drawing connection points of the upper and lower fabric layers (front end) together, with the drawing wires located between the upper and lower fabric layers. Then, the wires are input between the two drive rollers of the rear constant speed fabric output roller pair. The two drive rollers of the rear constant speed fabric output roller pair clamp (tighten) the space fabric from above and below and convey the space fabric forward at a constant speed.

[0042] The space fabric output from the rear constant speed fabric output roller is the space fabric with the connection points of the same drawing thread and the upper and lower fabric layers directly facing each other. It can be directly cut and used, or it can be wound into a roller and stored.

[0043] The specific steps of step 2 are as follows: Figure 6 As shown: The lower fabric layer 21 of the spatial fabric output from the front constant-speed feed roller pair, along with the drawing filament 22, is fed between the upper and lower alignment rollers from the front side. The lower fabric layer 21 output from the rear side of the upper and lower alignment rollers is bent back, passes between the upper and lower alignment rollers, and is fed from the rear side of the rear constant-speed output roller pair. The upper drive roller rotates counterclockwise, and the lower drive roller rotates clockwise and counterclockwise. The front constant-speed feed roller pair and the rear constant-speed output roller pair can convey the spatial fabric from back to front at a constant speed. The upper alignment roller 13 rotates clockwise and the lower alignment roller 15 rotates counterclockwise. The upper alignment roller 13 causes the lower fabric layer 22 in contact with it to be conveyed backward, and the lower alignment roller 15 generates a backward pulling force on the lower fabric layer 22 (the lower fabric layer after being bent back from the rear side of the upper and lower alignment rollers) in contact with it. The friction between the lower drive roller of the rear constant speed output roller pair and the lower fabric layer is greater than the friction between the lower alignment roller of the yarn alignment device and the lower fabric layer 21 after being bent back from the rear side of the upper and lower alignment rollers. The rear constant speed output roller pair pulls the lower fabric layer 21 and the upper fabric layer 20 forward together.

[0044] In steps 1 and 3 of this invention, adjusting the distance between the upper and lower drive rollers can adjust the pressure and friction between the front constant-speed feed roller pair and the rear constant-speed output roller pair and the space fabric; in step 2, adjusting the distance between the upper and lower alignment rollers can adjust the pressure and friction between the upper and lower alignment rollers on the two lower fabric layers.

[0045] In this invention, the upper and lower drive rollers of the front constant-speed feed roller pair and the rear constant-speed output roller pair have the same linear speed; the linear speed of the lower alignment roller is greater than that of the upper and lower drive rollers, and there is sliding friction between the lower alignment roller and the lower fabric layer 21. The linear speed of the upper alignment roller is the same as that of the upper and lower drive rollers, or the linear speed of the upper alignment roller is greater than that of the drive rollers, and the frictional force of the upper alignment roller on the lower fabric layer it contacts is less than the frictional force generated by the front constant-speed feed roller pair on the lower fabric layer. The space fabric is made of anti-slip space fabric, and the yarn of the space fabric is polyester yarn. The surface of polyester yarn is smooth, and the coefficient of friction is very small and negligible. The thickness of the upper and lower fabric layers is preferably 1-2 mm, which has good toughness, and there will be no creases when the upper and lower fabric layers are bent back with a radius of more than 2 mm.

[0046] The connection points of the same drawing thread of the spatial fabric produced using the device and method provided by this invention with the upper fabric layer and the lower fabric layer are directly facing downwards. When cutting, there is no need for manual alignment, saving labor and improving production efficiency.

Claims

1. A drawing and alignment device for a spatial fabric, comprising a support, characterized in that, The bracket is equipped with a front constant-speed feed roller pair, a rear constant-speed output roller pair, a wire drawing and alignment device, and a power source; The aforementioned front constant speed feed roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The front constant speed feed roller pair is used to clamp the spatial fabric and convey it forward at a set speed. The transmission rollers are connected to a power source, and the power source drives the transmission rollers to rotate. The rear constant speed fabric output roller pair includes a pair of mutually cooperating and adjustable transmission rollers. The rear constant speed fabric output roller pair is used to clamp the spatial fabric and convey it backward at a set speed. The transmission rollers are connected to a power source, and the power source drives the transmission rollers to rotate. The wire drawing alignment device is located between the front constant speed feed roller pair and the rear constant speed output roller pair. The wire drawing alignment device is used to align the wire drawing with the connection point of the upper and lower mesh fabrics. The specific structure of the yarn drawing and alignment device is as follows: an alignment mounting frame is provided on the bracket between the front constant speed feed roller pair and the rear constant speed output roller pair. An upper alignment roller is provided on the upper part of the alignment mounting frame. A lower alignment roller that can move up and down is provided on the mounting frame below the upper alignment roller via a height adjustment device. An upper alignment drive motor and a lower alignment drive motor that drive their rotation are respectively connected to the upper alignment roller and the lower alignment roller. The friction coefficient of the upper alignment roller is greater than that of the lower alignment roller.

2. The drawing and alignment device for the spatial fabric according to claim 1, characterized in that, The specific structure of the front constant-speed feed roller assembly is as follows: a lower drive roller that can rotate freely is horizontally mounted on the support; slide rails are respectively mounted on the supports at both ends of the lower drive roller; an adjusting slider that can slide freely up and down and cooperates with the slide rails is mounted above the lower drive roller; an upper drive roller that can rotate freely and cooperates with the lower drive roller is mounted on the two adjusting sliders; a lifting power source is respectively mounted on the support above the two adjusting sliders; the lifting power source is connected to the adjusting slider and is used to control the position of the adjusting slider on the slide rail; the specific structure of the rear constant-speed feed roller assembly is the same as that of the front constant-speed feed roller assembly.

3. The drawing and alignment device for the spatial fabric according to claim 1, characterized in that, The height adjustment device has an installation groove on the alignment mounting frame below the upper alignment roller, and an adjustable slide block that can slide up and down is provided in the installation groove. The lower alignment roller is installed on the adjustable slide block, and a connecting plate is provided on the adjusting slide block on the lower side of the lower alignment roller. A lifter is provided between the middle of the connecting plate and the alignment mounting frame below it.

4. The drawing and alignment device for the spatial fabric according to claim 3, characterized in that, The lifting device is a hand-cranked screw jack or a manual screw jack.

5. The drawing and alignment device for the spatial fabric according to claim 2, characterized in that, The upper and lower drive rollers are rubber rollers.

6. The method for aligning the yarn of a spatial fabric using the yarn-drawing and alignment device according to claim 1, characterized in that, Includes the following steps: Step 1: Input the starting end of the space fabric between the two drive rollers of the front constant speed feed roller pair. The drive rollers clamp the space fabric from above and below and convey the space fabric forward at a constant speed. Step 2: The lower layer of the spatial fabric output from the front constant speed feed roller is buffered by the wire drawing alignment device to align the wire drawing with the connection point of the upper and lower fabric layers; Step 3: After the upper and lower fabric layers are attached together at their respective drawing connection points, the fabric is fed in from the rear side of the two drive rollers of the rear constant speed fabric output roller pair. The two drive rollers of the rear constant speed fabric output roller pair clamp the space fabric from above and below and convey the space fabric forward at a constant speed.

7. The method for aligning the yarns of a spatial fabric according to claim 6, characterized in that, The specific steps of step 2 are as follows: the lower layer of the spatial fabric output from the front constant speed feed roller pair is fed between the upper and lower alignment rollers from the front side, and the lower layer of fabric output from the rear side of the upper and lower alignment rollers is bent back and passed between the upper and lower alignment rollers, and fed from the rear side of the rear constant speed output roller pair.

8. The method for aligning the yarns of a spatial fabric according to claim 7, characterized in that, In steps 1 and 3, adjusting the distance between the upper and lower drive rollers can adjust the pressure and friction between the front constant speed feed roller pair and the rear constant speed output roller pair and the space fabric; in step 2, adjusting the distance between the upper and lower alignment rollers can adjust the pressure and friction between the upper and lower alignment rollers on the two lower fabric layers.

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