A production process for ultra-high molecular weight polyethylene fiber stab-resistant fabric

Abstract

A process for producing ultra-high molecular weight polyethylene (UHMWPE) fiber stab-resistant fabric is disclosed. The equipment designed in this application utilizes intermittent rotation of the yarn feeder and intermittent drive of the warp yarns via a swing arm. This, combined with conductive fiber weft yarns from a rapier loom, interweaves to form a base fabric with a Z-shaped warp structure. This allows the UHMWPE fibers, known for their superior puncture resistance, to be regularly combined with the weft yarns in a Z-shaped structure. The reciprocating, staggered structure enhances the stab resistance of the base fabric while simultaneously ensuring the conductive fiber weft yarns are rationally distributed across both sides. Compared to simply blending different fibers, the base fabric obtained by this process possesses both antistatic properties and superior stab resistance.

Description

Technical Field

[0001] This invention relates to the field of special fabric processing technology, specifically to a production process for ultra-high molecular weight polyethylene fiber stab-resistant fabric. Background Technology

[0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-performance fiber material following aramid and carbon fiber. It is also one of the strongest synthetic fibers currently used in industrial applications. In addition to high strength and high modulus, UHMWPE fiber also has the advantages of low density, impact resistance, and cut resistance. Its density is only 0.97 g / cm3, which is lower than most synthetic fibers. At the same time, its chemical stability, light resistance, and low temperature resistance are all excellent. Therefore, it has a wide range of applications, such as in safety protection, navigation, fisheries, and sporting goods. Products include bulletproof UD fabric, stab-proof vest fabric, cut-resistant gloves, various ropes, fishing nets, etc.

[0003] The problem with existing technology is that while stab-resistant base fabric made solely from ultra-high molecular weight polyethylene fiber filaments possesses beneficial stab-resistant properties, the market currently demands more advanced functions in such stab-resistant protective products. For example, many industrial environments require stab-resistant protective shoes with anti-static grounding capabilities. Traditional protective shoes achieve stab resistance through steel plates embedded in the sole, but for grounding, the steel plate must simultaneously contact both the foot and the ground. Therefore, these traditional protective shoes offer very low comfort levels.

[0004] Using ultra-high molecular weight polyethylene (UHMWPE) fiber to manufacture the sole structure of protective shoes can solve the basic puncture resistance problem. However, UHMWPE fiber itself has insufficient conductivity. In order to prevent static electricity and grounding, other functional fibers must be added for blending. However, simple blending not only fails to ensure that the conductive fibers are regularly distributed in the base fabric and fully contact the conductive parts of the foot and sole, but also easily causes uneven distribution of UHMWPE fibers, resulting in a decrease in the puncture resistance of the base fabric.

[0005] Therefore, it is necessary to improve the design of the process for weaving stab-resistant fabrics from ultra-high molecular weight polyethylene fibers so that the woven base fabric has both good stab resistance and electrical conductivity. Summary of the Invention

[0006] In order to overcome the shortcomings of the above-mentioned technologies, the present invention provides a production process for ultra-high molecular weight polyethylene fiber stab-resistant fabric.

[0007] The technical solution of the present invention: A production equipment for ultra-high molecular weight polyethylene fiber stab-resistant fabric, comprising a rapier loom and a warp device, the warp device comprising a frame, several bundling mechanisms, a swing arm drive mechanism, a turnover drive mechanism, and a winding mechanism, wherein the bundling mechanism comprises a pair of warp yarn bobbins, a yarn outlet bobbin, and a swing arm rod, the yarn outlet bobbin being provided with a thread-passing hole, the thread-passing hole comprising an inlet and an outlet, a pair of guide rings being symmetrically arranged at the inlet, the yarn ends of the pair of warp yarn bobbins respectively passing through the pair of guide rings, and then connecting with each other to form a bundled yarn head after exiting from the outlet, the winding mechanism comprising a winding roller, the winding roller being connected to and winding up the bundled yarn heads exiting from each bundling mechanism;

[0008] The side of the outlet has a notch that penetrates the outlet tube. The swing arm is hinged to the inner wall of the outlet tube opposite to the notch. The swing arm drive mechanism drives the swing arm to rotate back and forth toward the notch. The intermittent rotation of the swing arm drives a pair of warp yarns to shift toward the outside of the notch.

[0009] The turnover drive mechanism drives the output spool to rotate intermittently, and a pair of guide rings drives a pair of warp yarns to form an interlaced structure;

[0010] The shuttle rapier loom operates alternately with the turnover drive mechanism and the swing arm drive mechanism. The shuttle rapier loom drives the conductive fiber weft yarn to alternately pass through the warp yarn interlacing structure to form the base fabric.

[0011] The swing arm rotates intermittently, causing the warp yarns to form a Z-shaped structure on the base fabric.

[0012] A further feature of the present invention is that the conductive limiting weft yarn is made of carbon fiber filament.

[0013] A further feature of the present invention is a production equipment for ultra-high molecular weight polyethylene fiber stab-resistant fabric, characterized in that: an installation groove is provided through the inner wall of the outlet tube on the other side of the notch; one end of the swing arm is provided with a hinge hole that is hinged to the installation groove; the other end is provided with a fork extending toward the notch; the swing arm is provided with an operating handle that passes through the installation groove; and the swing arm drive mechanism drives the operating handle to rotate the swing arm.

[0014] A further feature of the present invention is that the swing arm drive mechanism includes a lever, a cam, a main shaft, and a first motor. The cam is coaxially mounted on the main shaft. The middle section of the lever is hinged to the frame, with one end extending to the operating handle and the other end extending to the cam. The first motor drives the cam to rotate, thereby driving the lever rocker to move and intermittently driving the swing arm to flip.

[0015] A further feature of the present invention is that the shift fork has a mountain-shaped structure and is provided with two spacer grooves that are spaced apart from a pair of warp yarn bobbin ends.

[0016] By adopting the above technical solution, a pair of guide rings avoids the overlapping of a pair of warp yarn ends, and the effect is further improved by setting a mountain-shaped shift fork.

[0017] A further feature of the present invention is that the frame is provided with a support ring that is axially fixed to the cable drum and circumferentially rotates with it. The rotation drive mechanism includes a drive gear, a driven gear and a second motor. The driven gear is coaxially sleeved on the cable drum and rotates synchronously, and meshes with the drive gear. The drive gear rotates with the frame and is linked with the second motor to drive the cable drum to rotate intermittently.

[0018] The technical solution of the present invention is a production process for ultra-high molecular weight polyethylene fiber stab-resistant fabric. The stab-resistant fabric is produced using the equipment described in claims 1-5, and includes the following steps: Step S1, pretreatment, in which ultra-high molecular weight polyethylene fiber is cleaned, opened and combed, drawn and twisted to form warp yarn, wherein the warp yarn has a single strength variation coefficient (CV value) of less than 5%, an average single yarn breaking strength of greater than 90 cN / tex, and a breaking elongation of greater than 5%.

[0019] Step S2: Set up the warp yarn device with two sets of winding warp yarns corresponding to one output bobbin. Pass the bobbins of the two sets of winding warp yarns through the guide ring at the inlet of the output bobbin and through the outlet, then connect them to form a doubled head. Then fix the doubled head on the take-up roller.

[0020] In step S3, during the take-up roller step-back process, the rapier loom drives the weft yarn made of conductive fibers to alternately pass through the warp yarn grid led out by each lead-out bobbin; the lead-out bobbin makes several turns between two adjacent weft yarns to form an interlaced structure of warp yarns, and the swing arm and the rapier loom run alternately to drive the interlaced warp yarns to oscillate back and forth, so that the interlaced warp yarns make a Z-shaped structure trajectory between adjacent weft yarns, and finally form the base fabric.

[0021] A further feature of the present invention is that the conductive fiber weft yarn is made of carbon fiber.

[0022] A further feature of the present invention is that the base fabric is used to make protective shoe soles, protective shoe insoles, and protective clothing.

[0023] The beneficial effects of this invention are as follows: Through the design of the equipment in this application, the warp yarns are intermittently rotated and fed out by the output spool, and the warp yarns are intermittently driven to shift back and forth by the swing arm. Combined with the conductive fiber weft yarns exported by the rapier loom, they interweave to form a base fabric with a Z-shaped warp structure. This allows the ultra-high molecular weight polyethylene fibers with excellent puncture resistance to be regularly combined with the weft yarns in a Z-shaped structure. By utilizing the interlacing structure of the reciprocating swing, the puncture resistance of the base fabric is improved. At the same time, the conductive fiber weft yarns are reasonably distributed on the base fabric, conducting electricity on both sides of the base fabric. Compared with simply blending different fibers, the base fabric obtained by the process in this application has better puncture resistance while possessing antistatic properties. Attached Figure Description

[0024] Figure 1 The base fabric molding process of this invention embodiment Figure 1 ;

[0025] Figure 2 The base fabric molding process of this invention embodiment Figure 2 ;

[0026] Figure 3 The base fabric molding process of this invention embodiment Figure 3 ;

[0027] Figure 4 The base fabric molding process of this invention embodiment Figure 4 ;

[0028] Figure 5 The base fabric molding process of this invention embodiment Figure 5 ;

[0029] Figure 6 The device structure of this invention embodiment Figure 1 ;

[0030] Figure 7 The device structure of this invention embodiment Figure 2 ;

[0031] Figure 8 The device structure of this invention embodiment Figure 3 ;

[0032] Figure 9 The device structure of this invention embodiment Figure 4 .

[0033] The labels in the attached diagram are as follows: 1-frame, 2-bundling mechanism, 21-warp yarn bobbin, 22-lead bobbin, 221-lead hole, 222-guide ring, 223-notch, 224-mounting slot, 23-swing arm, 231-operating handle, 3-swing arm drive mechanism, 4-rotation drive mechanism, 41-drive gear, 42-driven gear, 5-winding mechanism, 6-warp yarn, 61-twisting head, 62-interlacing structure, 7-weft yarn, 8-shuttle rapier loom.

[0034] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0035] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0036] The following is a detailed description of the present invention with reference to the accompanying drawings, such as... Figure 1-9 As shown, a production equipment for ultra-high molecular weight polyethylene fiber stab-resistant fabric includes a rapier loom 8 and a warp device. The warp device includes a frame 1, several bundling mechanisms 2, a swing arm drive mechanism 3, a turnover drive mechanism 4, and a winding mechanism 5. The bundling mechanism 2 includes a pair of warp yarn bobbins 21, a yarn outlet bobbin 22, and a swing arm rod 23. The yarn outlet bobbin 22 is provided with a yarn through hole 221, which includes an inlet and an outlet. A pair of guide rings 222 are symmetrically arranged at the inlet. The yarn ends of the pair of warp yarn bobbins 21 pass through the pair of guide rings 222 respectively, and are connected to each other to form a double yarn head 61 after passing through the outlet. The winding mechanism 5 includes a winding roller, which is connected to and winds up the double yarn heads 61 that pass through each bundling mechanism 2.

[0037] The side of the outlet is provided with a notch 223 that penetrates the outlet tube 22. The swing arm rod 23 is hinged to the inner wall of the outlet tube 22 opposite to the notch 223. The swing arm drive mechanism 3 drives the swing arm rod 23 to reciprocate towards the notch 223. The intermittent flipping of the swing arm rod 23 drives a pair of warp yarns to shift outward relative to each other from the notch 223.

[0038] The turnover drive mechanism 4 drives the output drum 22 to rotate intermittently, and a pair of guide rings 222 drives a pair of warp yarns to form an interlaced structure 62;

[0039] The shuttle rapier loom 8 operates alternately with the turnover drive mechanism 4 and the swing arm drive mechanism 3. The shuttle rapier loom 8 drives the conductive fiber weft yarn 7 to alternately pass through the warp yarn interlacing structure 62 to interweave and form the base fabric.

[0040] The swing arm 23 rotates intermittently, causing the warp yarns 6 to form a Z-shaped structure on the base fabric.

[0041] The conductive limiting weft yarn 7 is made of carbon fiber filament.

[0042] The cable outlet 22 has a mounting groove 224 that runs through the inner wall on the other side of the notch 223. One end of the swing arm 23 has a hinge hole that is hinged to the mounting groove 224, and the other end has a fork that extends toward the notch 223. The swing arm 23 has an operating handle 231 that passes through the mounting groove 224. The swing arm drive mechanism 3 drives the operating handle 231 to rotate the swing arm.

[0043] The swing arm drive mechanism 3 includes a lever, a cam, a main shaft, and a first motor. The cam is coaxially mounted on the main shaft. The middle section of the lever is hinged to the frame 1, with one end extending to the operating handle 231 and the other end extending to the cam. The first motor drives the cam to rotate, causing the lever rocker plate to move and intermittently driving the swing arm 23 to flip.

[0044] The frame 1 is provided with a support ring that is axially fixed to the cable drum 22 and circumferentially rotated. The rotation drive mechanism includes a drive gear 41, a driven gear 42 and a second motor. The driven gear 42 is coaxially sleeved on the cable drum 22 and rotates synchronously, and meshes with the drive gear 41. The drive gear 41 rotates with the frame 1 and is linked with the second motor to drive the cable drum 22 to rotate intermittently.

[0045] A process for producing stab-resistant fabric from ultra-high molecular weight polyethylene fiber, using the equipment described in claims 1-5, includes the following steps: Step S1, pretreatment, where ultra-high molecular weight polyethylene fiber is cleaned, opened and combed, drawn and twisted to form warp yarn, wherein the warp yarn has a single yarn variation coefficient (CV value) of less than 5%, an average single yarn breaking strength of greater than 90 cN / tex, and a breaking elongation of greater than 5%.

[0046] Step S2: The two sets of winding warp yarns are set on the warp yarn device in such a way that each set of winding warp yarns corresponds to one exit bobbin 22. The bobbins of the two sets of winding warp yarns are passed through the guide ring 222 of the inlet of the exit bobbin 22 and then through the outlet, and connected to each other to form a parallel head 61. The parallel head 61 is then fixed on the take-up roller.

[0047] As per the instruction manual Figure 1-6 As demonstrated in step S3, during the take-up roller step-back process, the rapier loom 8 drives the weft yarn 7 made of conductive fibers to alternately pass through the warp yarn mesh led out by each lead-out bobbin 22; the lead-out bobbin 22 rotates several times between adjacent weft yarns 7 to form an interlaced structure 62, and the swing arm 23 and the rapier loom 8 operate alternately to drive the warp yarn of the interlaced structure 62 to swing back and forth, so that the warp yarn of the interlaced structure 62 forms a Z-shaped structural trajectory between adjacent weft yarns 7, and finally forms the base fabric.

[0048] The conductive fiber weft yarn 7 is made of carbon fiber.

[0049] The base fabric is used to make protective shoe soles, protective shoe insoles, and protective clothing.

[0050] Through the design of the equipment in this application, the warp yarns are intermittently rotated and fed out by the lead-out spool 22 and intermittently driven by the swing arm 23. Combined with the conductive fiber weft yarns 7 led out by the rapier loom 8, they are interwoven to form a base fabric with a Z-shaped warp structure. The ultra-high molecular weight polyethylene fibers with excellent puncture resistance are regularly combined with the weft yarns 7 in a Z-shaped structure. The interlacing structure 62 of the reciprocating swing improves the puncture resistance of the base fabric. At the same time, the conductive fiber weft yarns 7 are reasonably distributed on the base fabric, conducting electricity on both sides of the base fabric. Compared with simple blending of different fibers, the base fabric obtained by the process of this application has better puncture resistance while possessing antistatic properties.

[0051] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this invention should fall within the scope of protection of the appended claims.

Claims

1. A production equipment for ultra-high molecular weight polyethylene fiber stab-resistant fabric, characterized in that: The invention includes a rapier loom and a warp device. The warp device includes a frame, several bundling mechanisms, a swing arm drive mechanism, a turnover drive mechanism, and a take-up mechanism. Each bundling mechanism includes a pair of warp yarn bobbins, a yarn outlet bobbin, and a swing arm. The yarn outlet bobbin is provided with a yarn guide hole, which includes an inlet and an outlet. A pair of guide rings are symmetrically arranged at the inlet. The yarn ends of the pair of warp yarn bobbins pass through the pair of guide rings and exit through the outlet, then connect with each other to form a bundled yarn head. The take-up mechanism includes a take-up roller, which connects to and takes up the bundled yarn heads that pass through each bundling mechanism. The side of the outlet has a notch that penetrates the outlet tube. The swing arm is hinged to the inner wall of the outlet tube opposite to the notch. The swing arm drive mechanism drives the swing arm to rotate back and forth toward the notch. The intermittent rotation of the swing arm drives a pair of warp yarns to shift outward relative to the notch. The rotation drive mechanism drives the output spool to rotate intermittently, and a pair of guide rings drives a pair of warp yarns to form an interlaced structure; The shuttle rapier loom operates alternately with the turnover drive mechanism and the swing arm drive mechanism. The shuttle rapier loom drives the conductive fiber weft yarn to alternately pass through the warp yarn interlacing structure to form the base fabric. The swing arm rotates intermittently, causing the warp yarns to form a Z-shaped structure on the base fabric.

2. The equipment for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 1, characterized in that: The conductive fiber weft yarn is made of carbon fiber filaments.

3. The equipment for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 2, characterized in that: An installation groove is provided through the inner wall on the opposite side of the notch of the cable outlet. One end of the swing arm is provided with a hinge hole that is hinged to the installation groove, and the other end is provided with a fork extending toward the notch. The swing arm is provided with an operating handle that passes through the installation groove. The swing arm drive mechanism drives the operating handle to rotate the swing arm.

4. The equipment for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 3, characterized in that: The shift fork has a mountain-shaped structure and is provided with two spacer grooves that are spaced apart by a pair of warp yarn bobbin ends.

5. The equipment for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 4, characterized in that: The swing arm drive mechanism includes a lever, a cam, a main shaft, and a first motor. The cam is coaxially mounted on the main shaft. The middle section of the lever is hinged to the frame, with one end extending to the operating handle and the other end extending to the cam. The first motor drives the cam to rotate, thereby moving the lever rocker plate and intermittently driving the swing arm to flip.

6. The equipment for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 2, characterized in that: The frame is provided with a support ring that is axially fixed to the cable drum and circumferentially rotates with it. The rotation drive mechanism includes a drive gear, a driven gear and a second motor. The driven gear is coaxially sleeved on the cable drum and rotates synchronously, and meshes with the drive gear. The drive gear rotates with the frame and is linked with the second motor to drive the cable drum to rotate intermittently.

7. A process for producing ultra-high molecular weight polyethylene fiber stab-resistant fabric, using the ultra-high molecular weight polyethylene fiber stab-resistant fabric production equipment as described in any one of claims 1-6, characterized in that: The process includes the following steps: Step S1, pretreatment, in which ultra-high molecular weight polyethylene fibers are cleaned, opened and combed, drawn and twisted to form warp yarns, wherein the warp yarns have a single strength variation coefficient (CV value) of less than 5%, an average single yarn breaking strength of greater than 90 cN / tex, and a breaking elongation of greater than 5%. Step S2: Set up the warp yarn device with two sets of winding warp yarns corresponding to one output bobbin. Pass the two sets of winding warp yarns through the guide ring at the inlet of the output bobbin and through the output outlet, then connect them to form a doubled head. Then fix the doubled head on the take-up roller. In step S3, during the take-up roller step-back process, the rapier loom drives the weft yarn made of conductive fibers to alternately pass through the warp yarn grid led out by each lead-out bobbin; the lead-out bobbin makes several turns between two adjacent weft yarns to form an interlaced structure of warp yarns, and the swing arm and the rapier loom run alternately to drive the interlaced warp yarns to oscillate back and forth, so that the interlaced warp yarns make a Z-shaped structure trajectory between adjacent weft yarns, and finally form the base fabric.

8. The production process of an ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 7, characterized in that: The conductive fiber weft yarn is made of carbon fiber.

9. The production process of an ultra-high molecular weight polyethylene fiber stab-resistant fabric according to claim 8, characterized in that: The base fabric is used to make protective shoe soles, protective shoe insoles, and protective clothing.

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