A diameter-changing braiding method for quartz fiber sleeve

Abstract

The present invention relates to a variable diameter braiding method for quartz fiber sleeves, and belongs to the technical field of quartz fiber sleeve braiding. The present invention utilizes an existing sleeve braiding machine to achieve the integrated molding of fiber sleeves of different diameters, thereby solving the problem that existing sleeves have only one set diameter size and cannot adapt to the set of variable diameter products. At the same time, it solves the problem that the strength of the seam area caused by the segmented sewing and assembly method of the existing fiber sleeves cannot be guaranteed. The quartz fiber sleeve braided by the present invention ensures the integrity of the set material and does not have the problem of seams. On the other hand, the quartz fiber sleeve braided by the present invention is a coaxial variable diameter sleeve fabric, which has the characteristics of quartz fiber continuity and sleeve structural integrity.

Description

Technical Field

[0001] The invention relates to a diameter-changing braiding method for a quartz fiber sleeve, and belongs to the technical field of quartz fiber sleeve braiding. Background Art

[0002] Fiber sleeving is typically braided using a sleeving braiding machine. The product's shape varies depending on the cross-sectional diameter, presenting either a tubular (≤120mm) or cylindrical (>120mm) structure of uniform diameter. Fiber sleeving braiding machines are categorized into two types: vertical and horizontal. Due to its elastic structure, fiber sleeving is often used as a wrapping material for long objects such as cylinders and square tubes. Fiber sleeving performs different functions depending on the fiber material used, such as stainless steel sleeving for cable or plastic pipe wrapping, and quartz fiber sleeving for thermal insulation and insulation. Typically, fiber sleeving manufacturers use braiding machines with different spindle counts depending on the diameter of the fiber sleeving. Each machine can only produce fiber sleeving products of one diameter specification at a time (e.g., the Xuzhou Henghui GBJ90 high-speed braiding machine).

[0003] In actual use, when using a single-diameter fiber sleeve to wrap cylindrical objects of varying diameters, noticeable wrinkles develop at the point where the diameter changes, preventing the sleeve from fully conforming to the object. To address this issue, fiber sleeves of varying diameters or flat fabrics are typically assembled by sewing them in sections. However, this sewing method can result in insufficient strength at the joints (seam areas) and is cumbersome and complex to join, reducing the wrapping effect. Therefore, improvements are necessary. Summary of the Invention

[0004] The purpose of the present invention is to provide a variable diameter braiding method for quartz fiber sleeves that can realize the integrated braiding of fiber sleeves of different diameters using an existing sleeve braiding machine, so as to solve the problem that the strength of the seam area cannot be guaranteed due to the existing segmented sewing and assembly method of the fiber sleeves.

[0005] The technical solution of the present invention is:

[0006] A variable diameter braiding method for a quartz fiber sleeve is characterized in that it comprises the following steps:

[0007] 1) First, prepare the convolute and quartz fiber yarn required for braiding the fiber sleeve, and use a winding machine to wind the ends of multiple quartz fiber yarns onto the convolute in parallel;

[0008] 2) Start the yarn winding machine to complete the operation of winding the quartz fiber yarn onto the winding tube. The length of the fiber yarn wound onto the winding tube is based on actual demand, and the number of winding tubes is consistent with the total number of spindles of the sleeve braiding machine;

[0009] 3) Install the wound fiber yarn bobbin (bobbin yarn) onto the spindle dial of the sleeve braiding machine, and at the same time, route the fiber yarn according to the braiding routing requirements of the sleeve braiding machine. That is, the fiber yarn passes through the guide wheels in the middle and bottom of the spindle in turn, and then passes through the porcelain eye at the top of the spindle to exit the spindle. Finally, all the yarns are bundled at the weaving mouth; then start the braiding machine to weave the fiber sleeve;

[0010] 4) After the braiding machine is started, the large diameter section of the casing is braided first. At this time, the density adjustment gear ratio is A. When the large diameter section of the casing reaches the set length, the machine is shut down and the braiding work is stopped. The variable diameter equal spacing yarn reduction operation is carried out;

[0011] 5) When reducing yarn at equal intervals, first adjust the transmission ratio between the density adjustment gears to about 1 / 2A, then according to the total amount of spindle dials on the circumference of the guide rail, first reduce the bobbin yarn on a certain number of spindle dials at equal intervals. When reducing yarn at equal intervals, reserve a certain length of yarn at the interlacing point and then cut it, and put the reserved yarn tail into the woven sleeve; the length of the reserved yarn tail shall not exceed 1 / 2 of the sleeve diameter; then start the braiding machine to start weaving the sleeve;

[0012] 6) When the sleeve length after yarn reduction is woven to 5-20mm, the transition area between the large diameter section and the small diameter section of the sleeve is woven, and the machine is stopped again to adjust the transmission ratio between the density adjustment gears to about 1 / 3A. After the second gear transmission ratio adjustment is completed, the small diameter section of the sleeve can be woven until it is completed, and the variable diameter sleeve is obtained.

[0013] The present invention has the following beneficial effects:

[0014] The variable-diameter braiding method for quartz fiber sleeves provided by the present invention utilizes existing sleeve braiding machines to achieve the integrated molding of fiber sleeves of varying diameters. This solves the problem that existing sleeves only have one set diameter size and are unable to adapt to variable-diameter product sets. It also addresses the problem of the existing fiber sleeves being assembled in sections, resulting in insufficient strength in the seam area. The braided quartz fiber sleeves of the present invention ensure the integrity of the set material and are free of seams. Furthermore, the braided quartz fiber sleeves of the present invention are coaxial variable-diameter sleeve fabrics, characterized by quartz fiber continuity and sleeve structural integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the distribution of the bobbin yarn on the sleeve braiding machine before yarn reduction according to the present invention;

[0016] Figure 2 Schematic diagram of the distribution of the bobbin yarn after yarn reduction on the sleeve braiding machine of the present invention;

[0017] Figure 3 This is a schematic structural diagram of the braided reducer sleeve of the present invention.

[0018] In the figure: 1-fiber yarn; 2-spool yarn; 3-spindle dial; 4-spool empty space. DETAILED DESCRIPTION

[0019] The variable diameter braiding method of the quartz fiber sleeve comprises the following steps:

[0020] First, prepare the conduits and quartz fiber yarns required for braiding quartz fiber sleeves. Using a winding (or rewinding) machine, wind the yarn ends of 1-8 quartz fiber yarns side by side onto the conduits. The machine is then started to wind the quartz fiber yarns onto the conduits. The yarn length wound onto the conduits is determined by actual needs, and the number of conduits corresponds to the total number of spindles in the sleeve braiding machine. The number of spindles in the sleeve braiding machine can be multiples of 12, such as 180, 144, 120, 96, or 48, depending on the size of the sleeve product.

[0021] The fiber yarn wound tube is installed on the spindle dial of the sleeve braiding machine, and the fiber yarn is routed according to the braiding routing requirements of the sleeve braiding machine, that is, the fiber yarn passes around the guide wheels in the middle and bottom of the spindle in turn, and then passes through the spindle through the yarn guide at the top of the spindle; then the braiding machine is started to weave the fiber sleeve; the transmission ratio between the density adjustment gears is A. After the braiding machine is started, the sleeve of the large diameter section of the sleeve is firstly woven. When the sleeve of the large diameter section has been woven to the set length, the machine is turned off, the braiding work is stopped, and the variable diameter equal spacing yarn reduction operation is performed.

[0022] When reducing yarn at equal intervals, first adjust the transmission ratio between the density regulating gears according to the change in the large diameter section and the small diameter section of the sleeve to about 1 / 2A, and then subtract a certain number of bobbin yarns on the spindle dials at equal intervals according to the total number of spindle dials on the circumference of the guide rail, that is, subtract the bobbin yarns according to 2 / 3 or multiples of 2 / 3 of the total number of spindles to ensure that the sleeve structure remains unchanged. Among them, when reducing yarn at a ratio of 2 / 3, the yarn reduction must be two adjacent groups (subtracting the bobbins on two adjacent spindle dials) of the same yarn reduction unit (three adjacent spindle dials are one yarn reduction unit); realize yarn reduction in multiples of 2 / 3 (see attached Figure 1 、 2 For example, if the yarn reduction ratio is 4 / 6, the yarn reduction units are 6 adjacent turntables, and the yarn reduction is 4 adjacent groups of yarn.

[0023] When reducing yarn at equal intervals, the yarn is cut after leaving a yarn tail of 1 / 2 the diameter of the woven sleeve at the interweaving point, and the reserved yarn tail is placed in the woven sleeve; then the braiding machine is started to continue braiding the sleeve. When the sleeve after yarn reduction has been woven for a certain length, the machine is stopped again and the transmission ratio between the density adjustment gears is adjusted to about 1 / 3A. After the second gear ratio adjustment is completed, the small diameter section of the sleeve can be braided until it is completed, and a variable diameter sleeve product is obtained. The purpose of adjusting the transmission ratio between the gears is to ensure that the density of the sleeve woven before and after the adjustment is equivalent, and to avoid a large difference in the density of the sleeve woven before and after the adjustment. Example 1

[0024] (Take the braided reducing sleeve as an example, with a large diameter section of 30mm in diameter and 150mm in length; a small diameter section of 10mm in diameter and 300mm in length; and a transition section of 20mm in length)

[0025] Prepare the bobbin yarn required for weaving the variable diameter sleeve: Arrange three 133tex quartz fiber yarns in a row according to product requirements and evenly wind them onto the sleeve. The length is based on actual requirements and the bobbin yarn count is 96 spindles. Install the wound 96-spindle bobbin yarn onto spindle dial 3 of the sleeve braiding machine. The sleeve braiding machine is a 96-spindle sleeve braiding machine.

[0026] The fiber yarn is routed according to the braiding routing requirements of the sleeve braiding machine, and then the braiding machine is started to braid the fiber sleeve; at this time, the transmission ratio between the density adjustment gears of the braiding machine is 45.15. After the braiding machine is started, the sleeve of the large diameter section is first braided. When the sleeve of the large diameter section reaches the set length, the machine is turned off, the braiding work is stopped, and the variable diameter equal spacing yarn reduction operation is performed.

[0027] The yarn reduction is performed at even intervals, equal to 2 / 3 of the total number of spindles, or 64 spindles. The two bobbins on one spindle dial form a group, and the three adjacent spindle dials form a yarn reduction unit (three groups of yarn, a total of six spindles). Within each yarn reduction unit, the two adjacent groups are reduced. This cycle of yarn reduction is repeated until 64 spindles have been reduced. At the same time, the transmission ratio between the density adjustment gears of the braiding machine is adjusted to 25. After starting the braiding machine, weave the intermediate transition section until completion.

[0028] After the intermediate transition section is woven, the machine is stopped again to adjust the density of the braiding machine and the transmission ratio between the gears is adjusted to 14.8, and then the braiding machine is started to weave the small diameter section of the casing until it is completed to obtain a variable diameter casing product. Example 2

[0029] (Take the reducer sleeve with a braided large diameter section of 33mm in diameter and 100mm in length, a small diameter section of 10mm in diameter and 500mm in length, and a transition section of 20mm in length as an example)

[0030] Prepare the bobbin yarn required for weaving the variable diameter sleeve: Arrange four 133tex quartz fiber yarns in a row according to product requirements and evenly wind them onto the sleeve. The length is based on actual requirements and the bobbin yarn count is 96 spindles. Install the wound 96-spindle bobbin yarn onto spindle dial 3 of the sleeve braiding machine. The sleeve braiding machine is a 96-spindle sleeve braiding machine.

[0031] The fiber yarn is routed according to the braiding and routing requirements of the sleeve braiding machine, and then the braiding machine is started to braid the fiber sleeve; at this time, the transmission ratio between the density adjustment gears of the braiding machine is 48. After the braiding machine is started, the sleeve of the large diameter section is first braided. When the sleeve of the large diameter section reaches the set length, the machine is turned off, the braiding work is stopped, and the variable diameter equal spacing yarn reduction operation is performed.

[0032] The yarn reduction is performed at even intervals, equal to 2 / 3 of the total number of spindles, or 64 spindles. The two bobbins on one spindle dial form a group, and the three adjacent spindle dials form a yarn reduction unit (three groups of yarn, a total of six spindles). Within each yarn reduction unit, the two adjacent groups are reduced. This cycle of yarn reduction is repeated until 64 spindles have been reduced. At the same time, the transmission ratio between the density adjustment gears of the braiding machine is adjusted to 23.7. After starting the braiding machine, weave the intermediate transition section until completion.

[0033] After the intermediate transition section is woven, the machine is stopped again to adjust the density of the braiding machine and the transmission ratio between the gears is adjusted to 16.9, and then the braiding machine is started to weave the small diameter section of the sleeve until it is completed to obtain a finished variable diameter sleeve. Example 3

[0034] (Take the reducer sleeve with a braided large diameter section of 45mm in diameter and 200mm in length, a small diameter section of 15mm in diameter and 300mm in length, and a transition section of 20mm in length as an example)

[0035] Prepare the bobbin yarn required for weaving the variable diameter sleeve: Arrange four 133tex quartz fiber yarns in a row according to product requirements and evenly wind them onto the sleeve. The length is based on actual requirements and the bobbin yarn count is 120 spindles. Install the wound 120-spindle bobbin yarn on spindle dial 3 of the sleeve braiding machine. The sleeve braiding machine is a 120-spindle sleeve braiding machine.

[0036] The fiber yarn is routed according to the braiding routing requirements of the sleeve braiding machine, and then the braiding machine is started to braid the fiber sleeve; at this time, the transmission ratio between the density adjustment gears of the braiding machine is 46.2. After the braiding machine is started, the sleeve of the large diameter section is first braided. When the sleeve of the large diameter section reaches the set length, the machine is turned off, the braiding work is stopped, and the variable diameter equal spacing yarn reduction operation is performed.

[0037] The yarn reduction is performed at even intervals, equal to 2 / 3 of the total number of spindles, or 80 spindles. The two bobbins on one spindle dial form a group, and the three adjacent spindle dials form a yarn reduction unit (three groups of six yarns). Within each yarn reduction unit, the two adjacent groups are reduced. This cycle of yarn reduction is repeated until 80 spindles have been reduced. At the same time, the transmission ratio between the density adjustment gears of the braiding machine is adjusted to 25. After starting the braiding machine, weave the intermediate transition section until completion.

[0038] After the intermediate transition section is woven, the machine is stopped again, the transmission ratio between the density adjustment gears of the weaving machine is adjusted to 17, and then the weaving machine is started to weave the small diameter section of the casing until it is completed to obtain the finished variable diameter casing.

[0039] In the above embodiment, the wall thickness of the sleeve corresponding to the two diameters is the same before and after yarn reduction. The wall thickness is determined by the linear density of the selected fiber yarn. The linear density range is 20 to 1500 tex, with preferred linear densities of 51 tex, 72 tex, 85 tex, 95 tex, 133 tex, etc., corresponding to a wall thickness range of 0.1 mm to 3 mm. Preferably, the wall thickness range is 0.3 mm to 1 mm.

[0040] It should be noted that the amount of yarn reduction at equal intervals is 2 / 3 of the total number of spindles or multiples of 2 / 3. When the yarn is reduced at a ratio of 2 / 3, the yarn reduced must be two adjacent groups of the same yarn reduction unit; when the yarn is reduced at multiples of 2 / 3, such as when the reduction ratio is 4 / 6, the yarn reduction units are 6 adjacent turntables, and the yarn reduced is four adjacent groups of yarn (specifically: reduce 2, keep 2, and reduce 2, reduce 4, keep 2, and reduce 4).

[0041] The variable diameter yarn reduction can also be performed multiple times according to the actual needs of the product design. The yarn reduction condition is that the number of spindles remaining after the previous yarn reduction is still a multiple of 12 spindles.

[0042] When reducing yarn diameter, the yarn is cut at the interlacing point and the cut yarn tail is placed in the conical mesh formed by the interlacing of the yarn. After the weaving is completed, the yarn tail of the reduced yarn is all inside the tube. The final length of the reduced yarn tail does not exceed 1 / 2 of the diameter of the tube.

Claims

1. A variable diameter braiding method for a quartz fiber sleeve, characterized by: It includes the following steps; 1) First, prepare the convolute and quartz fiber yarn required for braiding the fiber sleeve; and use a winding machine to wind multiple quartz fiber yarn ends onto the convolute in parallel; 2) Start the yarn winding machine to complete the operation of winding the quartz fiber yarn onto the winding tube. The length of the fiber yarn wound onto the winding tube is based on actual demand, and the number of winding tubes is consistent with the total number of spindles of the sleeve braiding machine; 3) Install the wound fiber yarn conduit onto the spindle dial of the sleeve braiding machine, and at the same time, route the fiber yarn according to the braiding routing requirements of the sleeve braiding machine. That is, the fiber yarn passes through the guide wheels in the middle and bottom of the spindle in turn, and then passes through the porcelain eye at the top of the spindle to exit the spindle; then start the braiding machine to weave the fiber sleeve; 4) After the braiding machine is started, the large diameter section of the casing is braided first. At this time, the density adjustment gear ratio is A. When the large diameter section of the casing reaches the set length, the machine is shut down and the braiding work is stopped. The variable diameter equal spacing yarn reduction operation is carried out; 5) When reducing yarn at equal intervals, first adjust the transmission ratio between the density adjustment gears to about 1 / 2A, and then, according to the total number of spindle dials on the circumference of the guide rail, first subtract a certain number of bobbin yarns on the spindle dials at equal intervals, that is, subtract the bobbin yarns according to 2 / 3 or multiples of 2 / 3 of the total number of spindles to ensure that the sleeve structure remains unchanged; when reducing yarn at equal intervals, reserve a certain length of yarn at the interlacing point and then cut it, and put the reserved yarn tail into the woven sleeve; the length of the reserved yarn tail shall not exceed 1 / 2 of the sleeve diameter; then start the braiding machine to start weaving the sleeve; 6) When the sleeve length after yarn reduction is woven to 5-20mm, the transition area between the large diameter section and the small diameter section of the sleeve is woven, and the machine is stopped again to adjust the transmission ratio between the density adjustment gears to 1 / 3A. After the second gear ratio adjustment is completed, the small diameter section of the sleeve can be woven until it is completed, and the finished variable diameter sleeve is obtained.

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