High-holding composite material for accurately conveying bobbins

Abstract

The invention discloses a high-holding bobbin accurate conveying composite material which comprises a center layer, an upper transmission layer and a lower transmission layer, the upper transmission layer and the lower transmission layer are located above and below the center layer, a high-holding material upper layer is arranged between the center layer and the upper transmission layer, and a high-holding material lower layer is arranged between the center layer and the lower transmission layer. The invention also discloses a preparation method of the composite material. According to the invention, the high holding material is added as a material for contacting and holding the bobbin, so that the bobbin chassis is stably held, the slipping phenomenon of the bobbin chassis and the conveying belt is avoided, the accurate conveying of the bobbin is realized, the repiecing and jointing efficiency of the automatic bobbin winder is improved, and the high-speed and high-efficiency performance of the intelligent bobbin winder is fully exerted.

Description

Technical Field

[0001] This invention relates to a composite polymer material, specifically a high-grip yarn tube precision delivery composite material. Background Technology

[0002] Currently, the yarn bobbin conveyor uses a traditional sheet-based transmission belt, with the gripping material being a rubber material in the upper and lower friction transmission layers. When the conveyor belt transports the yarn bobbin, problems such as slippage, easy cracking, incomplete or untimely yarn bobbin delivery occur, affecting the intelligent winding machine's head-generating efficiency and the overall efficiency of the intelligent winding machine production line, thus becoming a constraint on the high-efficiency production of intelligent winding machines. Summary of the Invention

[0003] To achieve high grip, precise delivery, and double the lifespan of yarn tubes, and to solve the problems of slippage, incomplete delivery, and short lifespan caused by insufficient grip on yarn tubes in traditional conveyor belts, this invention discloses a high-grip, precise yarn tube delivery composite material. This material is highly wear-resistant, provides excellent grip on the yarn tube tray, and has a service life of over two years.

[0004] This invention is achieved through the following technical solution: A high-grip yarn tube precision delivery composite material includes a central layer and an upper transmission layer and a lower transmission layer located above and below the central layer. An upper high-grip material layer is located between the central layer and the upper transmission layer, and a lower high-grip material layer is located between the central layer and the lower transmission layer. The thickness ratio of the upper transmission layer, the upper high-grip material layer, the central layer, the lower high-grip material layer, and the lower transmission layer is: 1.0-1.2 : 2.0-2.4 : 0.4-0.6 : 2.0-2.4 : 1.0-1.2.

[0005] In the above materials, the core layer is a reinforcing layer, made of high-strength, low-elongation nylon modified sheet. The preparation method of the high-strength, low-elongation nylon modified sheet is as follows: polyisoprene grafted with maleic anhydride, pentaerythritol stearate, short glass fibers, and KH550 silane coupling agent are added to nylon, mixed evenly for modification. After modification, a single-screw extruder is used at a temperature of 230-250℃, a metering pump speed of 10-20 rpm, a draw ratio of 3-5, and a sheet thickness of 0.4-0.6 mm to obtain the high-strength, low-elongation nylon modified sheet. The amounts of polyisoprene grafted with maleic anhydride, pentaerythritol stearate, short glass fibers, and KH550 silane coupling agent added are 0.01-0.03%, 0.05-0.1%, 0.01%, and 0.01-0.03% of the nylon mass, respectively. Short glass fibers (approximately 3-4 mm) maximize the tensile strength of the nylon.

[0006] Of the above materials, the transmission layer is made of rubber, specifically nitrile rubber.

[0007] To improve the gripping effect on the yarn bobbin, a novel composite material structure was designed, incorporating a high-grip material layer. This high-grip material layer consists of the following components by weight: main material: nitrile rubber and polyurethane rubber (nitrile rubber to polyurethane rubber ratio of 7:3): 45-55%; other components by weight: 45-55%.

[0008] Other components include: Short glass fiber: 10 parts; Reinforcing fillers: Precipitated silica: 30-50 parts; Silane coupling agent: 3 parts; Composite wear-resistant agent (polytetrafluoroethylene micro powder: calcium stearate = 4:1): 5 parts; Antioxidant: Styrene-phenol SP: 2 parts; Antioxidant RD: 2 parts; Processing aids: 10-20 parts softening processing oil TP95; 3-5 parts pigment; 0.5-1 part dodecyl ethanolamine; Vulcanization activator: Zinc oxide: 3.5-5 parts; Magnesium oxide: 4 parts; Stearic acid: 1-2 parts; Accelerator: 1.5-2.5 parts, thiazole: thiuram = 10:1.

[0009] Insoluble sulfur: 1.5-2.5 parts; The preparation method and processing technology are pressure kneading or interlocking internal mixing. Specifically, it includes: 1) First stage: Two types of rubber, short glass fiber, and composite wear-resistant agent are added to the internal mixer at 100℃. The mixture is sheared, extruded, and kneaded for 90 seconds. Reinforcing filler, vulcanization activator, processing aid, accelerator, and antioxidant are added. The mixture is kneaded for another 200 seconds. The mixture is then discharged from the sheeting machine and cooled to obtain the first stage compound rubber.

[0010] Second stage: Add the first stage of compound rubber and the corresponding insoluble sulfur, and mix for 60-80 seconds.

[0011] 2) Unload the material into the sheeting mill, cool it down 2-3 times, mix it for 100 seconds, then sheet it and cool it down. Let it stand for more than 24 hours after cooling it down to below 50°C to eliminate processing stress.

[0012] 3) After the rubber compound is coarsely and finely mixed and heated evenly, it is fed into a four-roll calender to form a sheet of 1.5-3mm and then bonded to both sides of the strong layer nylon sheet. The transmission layer material is then calendered and bonded to both sides of the holding material.

[0013] The roughing process is carried out in a hot glue kneading machine at a speed of 20 r / min, a top bolt pressure of 4 kN, and a time of 200 s.

[0014] The refining process is carried out on a hot glue mixing mill with a roller gap of 7±1mm. The glue is turned over twice on each side and then pounded for 100 seconds on a frame.

[0015] 4) On a drum-type continuous vulcanizing machine, at a temperature of 150-180℃, a pressure of 80-150 bar, and a time of 15-20 minutes, the material is bonded to the reinforcing layer to form a single unit. The surface of the transmission layer is patterned to complete the cross-linking of the polymer material, thus preparing the large roll of material for gripping and conveying. The pattern ensures the designed coefficient of friction and heat dissipation requirements.

[0016] 5) Process the conveyor belt according to the specific design dimensions required by the intelligent winding machine.

[0017] Beneficial effects This invention achieves a stable grip on the yarn tube base by adding a high-grip material as the material for contacting and holding the yarn tube, eliminating slippage between the yarn tube base and the conveyor belt, enabling precise yarn tube delivery, improving the head and splicing efficiency of the automatic winding machine, and fully realizing the high-speed and high-efficiency performance of the intelligent winding machine. Attached Figure Description

[0018] Figure 1 For precise delivery of composite materials to high-grip yarn tubes; Figure 2 A schematic diagram illustrating the application of high-grip yarn tubes for precise delivery of composite materials. In the diagram, 1. Upper transmission layer; 2. Upper layer of high-grip material; 3. Middle layer; 4. Lower layer of high-grip material; 5. Lower transmission layer. Detailed Implementation

[0019] The following is a detailed description of the accompanying drawings and embodiments of the present invention. These embodiments are implemented based on the technical solution of the present invention and provide specific implementation schemes and operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0020] Example 1 A high-grip yarn tube precision delivery composite material includes a central layer 3 and an upper transmission layer 1 and a lower transmission layer 5 located above and below the central layer. A high-grip material upper layer 2 is located between the central layer and the upper transmission layer, and a high-grip material lower layer 3 is located between the central layer and the lower transmission layer. The thickness ratio of the upper transmission layer, the high-grip material upper layer, the central layer, the high-grip material lower layer, and the lower transmission layer is 1.0 mm: 2.0 mm: 0.5 mm: 2.0 mm: 1.0 mm.

[0021] The core layer is made of high-strength, low-elongation nylon modified sheet. The preparation method of the high-strength, low-elongation nylon modified sheet is as follows: polyisoprene grafted with maleic anhydride, pentaerythritol stearate, short glass fibers, and KH550 silane coupling agent are added to nylon, mixed evenly, and modified. After modification, a single-screw extruder is used at a temperature of 240℃, a metering pump speed of 10 rpm, a draw ratio of 3, and a sheet thickness of 0.5 mm to obtain the high-strength, low-elongation nylon modified sheet. The amounts of polyisoprene grafted with maleic anhydride, pentaerythritol stearate, short glass fibers, and KH550 silane coupling agent added are 0.02%, 0.05%, 0.01%, and 0.02% of the nylon mass, respectively.

[0022] The transmission layer is made of nitrile rubber.

[0023] The high-grip material layer is composed of the following components by weight: main material: nitrile rubber and polyurethane rubber (nitrile rubber to polyurethane rubber ratio is 7:3): 50%; other components by weight are 50%.

[0024] Other components include: precipitated silica: 40 parts; short glass fiber: 10 parts; composite wear-resistant agent (PTFE micro powder: calcium stearate = 4:1): 5 parts; silane coupling agent: 3 parts; styrene-phenol SP: 2 parts; antioxidant RD: 2 parts; softening processing oil TP95: 15 parts; dodecyl ethanolamine: 0.5 parts; pigment: 4 parts; zinc oxide: 4 parts; magnesium oxide: 4 parts; stearic acid: 2 parts; insoluble sulfur: 2 parts; activation and promoting complexing system (thiazole DM: thiuram™ = 10:1): 2 parts.

[0025] The preparation method includes the following steps: 1) First stage: Two types of rubber, short glass fiber, and composite wear-resistant agent are added to the internal mixer at 100℃. The mixture is sheared, extruded, and kneaded for 90 seconds. Reinforcing filler, vulcanization activator, processing aid, accelerator, and antioxidant are added. The mixture is kneaded for another 200 seconds. The mixture is then discharged from the sheeting machine and cooled to obtain the first stage compound rubber.

[0026] Second stage: Add the first stage of compound rubber and the corresponding insoluble sulfur, and mix for 60 seconds.

[0027] 2) Unload the material into the sheeting mill, cool it down 3 times, add 100 seconds of mixing and then sheet it out for cooling. Let it stand for more than 24 hours after cooling to below 50°C to eliminate processing stress.

[0028] 3) After the rubber compound is coarsely and finely mixed and heated evenly, it is fed into a four-roll calender to form a sheet of 1.5mm and then bonded to both sides of the high-strength modified nylon sheet. The transmission layer material is then calendered and bonded to both sides of the holding material.

[0029] 4) On a drum-type continuous vulcanizing machine at a temperature of 170℃, a pressure of 100 bar, and a time of 15 minutes, the material is bonded to the reinforcing layer to form a single unit. The surface of the transmission layer is pressed into a uniquely designed pattern, completing the cross-linking molding of the polymer material and completing the preparation of the large roll of the holding and conveying material.

[0030] The performance indicators of the holding material meet the requirements of Table 1: Table 1 Performance Indicators of Grip Material Example 2 A high-grip yarn tube precision delivery composite material includes a central layer 3 and an upper transmission layer 1 and a lower transmission layer 5 located above and below the central layer. A high-grip material upper layer 2 is located between the central layer and the upper transmission layer, and a high-grip material lower layer 3 is located between the central layer and the lower transmission layer. The thickness ratio of the upper transmission layer, the high-grip material upper layer, the central layer, the high-grip material lower layer, and the lower transmission layer is 1.0 mm: 2.0 mm: 0.5 mm: 2.0 mm: 1.0 mm.

[0031] The central layer is made of high-strength, low-elongation modified nylon sheet, and the preparation method is the same as in Example 1; the transmission layer is made of nitrile rubber.

[0032] The high-grip material layer is composed of the following components by weight: main material: nitrile rubber and polyurethane rubber (nitrile rubber to polyurethane rubber ratio is 7:3): 50%; other components by weight are 50%.

[0033] Other components include: precipitated silica: 35 parts; short glass fiber: 10 parts; composite wear-resistant agent (PTFE micro powder: calcium stearate = 4:1): 5 parts; silane coupling agent: 3 parts; styrene-phenol SP: 2 parts; antioxidant RD: 2 parts; softening processing oil TP95: 18 parts; dodecyl ethanolamine: 1 part; pigment: 4 parts; zinc oxide: 4 parts; magnesium oxide: 4 parts; stearic acid: 2 parts; insoluble sulfur: 2 parts; activation and promoting complexing system (thiazole DM: thiuram™ = 10:1): 2 parts.

[0034] The preparation method is the same as in Example 1.

[0035] Comparative Example 1 A composite material for precisely conveying yarn tubes includes a central layer and an upper and lower transmission layer located above and below the central layer.

[0036] The central layer is made of high-strength, low-elongation modified nylon sheet, and the preparation method is the same as in Example 1; the transmission layer is made of nitrile rubber.

[0037] The preparation method includes the following steps: 1) The transmission layer material is calendered and bonded to both sides of the modified nylon sheet with a strong layer.

[0038] 2) On a drum-type continuous vulcanizing machine, at a temperature of 170℃, a pressure of 100 bar, and a time of 15 minutes, the material is bonded to the reinforcing layer to form a single unit. The surface of the transmission layer is molded with a uniquely designed pattern, completing the cross-linking molding of the polymer material and thus completing the preparation of the gripping and conveying material.

[0039] Comparative Example 2 A composite material for precisely delivering yarn tubes, with the same material structure as in Example 1.

[0040] The central layer is made of high-strength, low-elongation modified nylon sheet, and the preparation method is the same as in Example 1; the transmission layer is made of nitrile rubber.

[0041] The gripping material layer is composed of the following components by weight: main material: 50% nitrile rubber; other components by weight are 50%.

[0042] Other components include: precipitated silica: 40 parts; short glass fiber: 10 parts; composite wear-resistant agent (PTFE micro powder: calcium stearate = 4:1): 5 parts; silane coupling agent: 3 parts; styrene-phenol SP: 2 parts; antioxidant RD: 2 parts; softening processing oil TP95: 15 parts; pigment: 4 parts; zinc oxide: 4 parts; magnesium oxide: 4 parts; stearic acid: 2 parts; insoluble sulfur: 2 parts; activation and promoting complexing system (thiazole DM: thiuram™ = 10:1): 2 parts.

[0043] The preparation method is the same as in Example 1.

[0044] Comparative Example 3 A composite material for precisely delivering yarn tubes, with the same material structure as in Example 1.

[0045] The central layer is made of high-strength, low-elongation modified nylon sheet, and the preparation method is the same as in Example 1; the transmission layer is made of nitrile rubber.

[0046] The gripping material layer is composed of the following components by weight: main material: nitrile rubber and polyurethane rubber (nitrile rubber to polyurethane rubber ratio is 1:1): 30%; other components by weight are 70%.

[0047] Other components include: precipitated silica: 40 parts; short glass fiber: 10 parts; composite wear-resistant agent (PTFE micro powder: calcium stearate = 4:1): 5 parts; silane coupling agent: 3 parts; styrene-phenol SP: 2 parts; antioxidant RD: 2 parts; softening processing oil TP95: 15 parts; dodecyl ethanolamine: 0.5 parts; pigment: 4 parts; zinc oxide: 4 parts; magnesium oxide: 4 parts; stearic acid: 2 parts; insoluble sulfur: 2 parts; activation and promoting complexing system (thiazole DM: thiuram™ = 10:1): 2 parts.

[0048] The preparation method is the same as in Example 1.

[0049] Comparative Example 4 A composite material for precisely delivering yarn tubes, wherein the reinforcing layer is made of nylon sheet; the rest is the same as in Example 1.

[0050] The gripping materials prepared in the above comparative examples were tested.

[0051] Table 2 Performance Indicators of Grip Material The composite material conveyor system supports and holds the yarn tube tray, precisely delivering the yarn tubes to the starting and ending points. Insufficient grip will result in slippage, skewing, and failure to deliver the yarn tubes accurately and promptly. This invention utilizes a high-grip, precise yarn tube delivery composite material, with a unique composite material formula and process, providing sufficiently strong grip to ensure stable and accurate delivery of the yarn tubes.

Claims

1. A high-grip yarn tube precision delivery composite material, characterized in that it comprises a central layer and an upper transmission layer and a lower transmission layer located above and below the central layer, wherein an upper high-grip material layer is located between the central layer and the upper transmission layer, and a lower high-grip material layer is located between the central layer and the lower transmission layer; the thickness ratio of the upper transmission layer, the upper high-grip material layer, the central layer, the lower high-grip material layer, and the lower transmission layer is: 1.0-1.2：2.0-2.4：0.4-0.6：2.0-2.4：1.0-1.2。 2. The high-grip yarn tube precision delivery composite material according to claim 1, characterized in that, The core layer is a high-strength layer, made of high-strength, low-elongation modified nylon sheet.

3. The high-grip yarn tube precision delivery composite material according to claim 2, characterized in that, The preparation method of high-strength, low-elongation nylon modified sheet is as follows: polyisoprene grafted with maleic anhydride, pentaerythritol stearate, short glass fiber, and KH550 silane coupling agent are added to nylon for modification, and then extruded to obtain high-strength, low-elongation nylon modified sheet.

4. The high-grip yarn tube precision delivery composite material according to claim 3, characterized in that, The amounts of polyisoprene grafted maleic anhydride, pentaerythritol stearate, short glass fiber, and KH550 silane coupling agent added are 0.01-0.03%, 0.05-0.1%, 0.01%, and 0.01-0.03% of the mass of nylon, respectively.

5. The high-grip yarn tube precision delivery composite material according to claim 1, characterized in that, The transmission layer is made of rubber, specifically nitrile rubber.

6. The high-grip yarn tube precision delivery composite material according to claim 1, characterized in that, The high-grip material layer is composed of the following components by weight: the main material includes nitrile rubber and polyurethane rubber, with a mass ratio of 45-55%; other components have a mass ratio of 45-55%; and the mass ratio of nitrile rubber to polyurethane rubber is 7:

3.

7. The high-grip yarn tube precision delivery composite material according to claim 6, characterized in that, Other ingredients include: Short glass fiber: 10 parts; Reinforcing fillers: Precipitated silica: 30-50 parts; Silane coupling agent: 3 parts; Composite wear-resistant agent: 4 parts polytetrafluoroethylene micro powder, 1 part calcium stearate; Antioxidant: Styrene-phenol SP: 2 parts; Antioxidant RD: 2 parts; Processing aids: 10-20 parts softening processing oil TP95; 3-5 parts pigment; 0.5-1 part dodecyl ethanolamine; Vulcanization activator: Zinc oxide: 3.5-5 parts; Magnesium oxide: 4 parts; Stearic acid: 1-2 parts; Accelerator: 1.5-2.5 parts, thiazole: thiuram = 10:1; Insoluble sulfur: 1.5-2.5 parts.

8. A method for preparing a high-grip yarn tube precision delivery composite material according to any one of claims 1-7, characterized in that, Pressurized kneading or interlocking kneading.

9. The method for preparing the high-grip yarn tube precision delivery composite material according to claim 8, characterized in that, Includes the following steps: 1) First stage: Rubber, short glass fiber, and composite wear-resistant agent are added to the internal mixer at 100℃. The mixture is sheared, extruded, and kneaded for 90 seconds. Reinforcing filler, vulcanization activator, processing aid, accelerator, and antioxidant are added. The mixture is kneaded for another 200 seconds. The mixture is then discharged from the sheeting machine and cooled to obtain the first stage compound rubber. Second stage: Add the first stage of compound rubber and insoluble sulfur, and mix for 60-80 seconds; 2) Unload the material into the sheeting mill, cool it down 2-3 times, mix it for 100 seconds, then sheet it and cool it down. Let it stand for 24 hours after cooling it down to below 50℃. 3) After the rubber compound is coarsely and finely mixed and the hot rubber is uniform, it is fed into a four-roll calender to be pressed into sheets of 1.5-3mm and then bonded to both sides of the high-strength modified nylon sheet. The transmission layer material is then calendered and bonded to both sides of the holding material. 4) On a drum-type continuous vulcanizing machine at a temperature of 150-180℃, a pressure of 80-150 bar, and a time of 15-20 min, the material is combined with the reinforcing layer to form a single unit; the surface of the transmission layer is pressed into a patterned texture to complete the cross-linking molding of the polymer material and to complete the preparation of the large roll of the holding and conveying material.

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