Looped fabric weaving device and weaving method

Abstract

The invention relates to a looped fabric weaving device and method, and the device comprises annular crawler belts which are symmetrically disposed at two sides of a weaving machine body; the long rod assemblies are arranged on the annular crawler belts at intervals, the moving direction of the long rod assemblies is perpendicular to the moving direction of the base cloth, and the long rod assemblies of the two annular crawler belts are oppositely arranged; the driving assembly is suitable for driving the movable ends of the long bar assemblies to independently stretch out, and the end portions of the movable ends of the two oppositely-arranged long bar assemblies are in butt joint. The device can achieve looping transformation based on a conventional weaving machine, the weaving machine does not need to be changed, and the device is simple and convenient; the device is installed on the two sides of a weaving machine, a temporary supporting structure is formed on the surface of a fabric through intermittent dynamic intervention exiting of the movable long rod assembly, rapid forming of a looping structure can be achieved, and looping control is stable; an original beating-up and let-off system is directly utilized, the improvement cost is low, uninterrupted production of looped fabric is achieved on a weaving machine, the looping size is adjustable, the requirements of diversified looped products can be met, and the looping efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a loop fabric weaving device and a weaving method. Background Art

[0002] Loop fabric is a type of textile with a regular or disordered coil structure on the surface. A three-dimensional loop structure (terry) is formed during the weaving process through warp or weft yarns, giving the fabric functional properties such as water absorbency, warmth retention, and decorativeness. Traditional loop fabric weaving methods usually include the following: terry rod method, warp jacquard loop method, and needle-assisted method. Among them, the terry rod method requires the machine to be stopped and the terry rod to be manually removed after each section of fabric is weaved, which is inefficient, has poor flexibility, and the distribution of terry is limited, making it impossible to form loops locally. The warp jacquard loop method is prone to skewing of the terry due to uneven warp tension, and the height of the terry is limited. The needle-assisted method is difficult to synchronize the needle movement with the rhythm of the loom, and the production speed is slow.

[0003] Therefore, how to provide a weaving method and weaving device for loop fabrics, realize the continuous production of yarn and monofilament loop fabrics on traditional looms, enhance the flexibility of controlling the height of the loops, and improve production efficiency is a technical problem that the present invention urgently needs to solve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to realize the weaving of looped fabric;

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The present invention is a loop fabric weaving device, comprising: an annular crawler with a rotary structure, which is symmetrically arranged on both sides of a loom body, and the movement direction of the side close to the base cloth is consistent with the movement direction of the base cloth; a plurality of long rod assemblies, which are arranged at intervals on the annular crawler, and the movement direction of the long rod assemblies is perpendicular to the movement direction of the base cloth, wherein the long rod assemblies of two annular crawlers are arranged opposite to each other; a driving assembly, which is suitable for driving the movable ends of the long rod assemblies to independently extend and connect the ends of the movable ends of the two oppositely arranged long rod assemblies.

[0007] Furthermore, when the movable ends of the two long rod assemblies are butted together, a butting groove is provided at the end of one of the movable ends, and a butting protrusion matching the butting groove is protruded from the end of the other movable end.

[0008] Furthermore, the fixed portion of the long rod assembly is fixedly connected to the annular crawler, and the movable end of the long rod assembly is plugged and sealed to the fixed portion.

[0009] Furthermore, the drive assembly includes: a compressor; an integrator, which is connected to the compressor at its input end; a plurality of distribution valves, the output end of the integrator is connected to the plurality of distribution valves through a rotating hose, and the output end of the distribution valve is connected to the rod cavity or rodless cavity of the long rod assembly.

[0010] Furthermore, the long rod assembly is detachably fixed on the annular track.

[0011] The present application also discloses a loop weaving method, comprising the following steps: S1: selecting a long rod assembly of appropriate diameter according to the loop structure, and connecting the long rod assembly to the annular crawler and the driving assembly; S2: the annular crawler moves the two relatively arranged long rod assemblies to between the front stop point and the rear stop point, the driving assembly drives the relatively arranged long rod assemblies to dock, and the reed starts to perform the beating action, pushing the weft yarn to the front stop point to form an interweaving constraint, and forcing the warp yarn to cover the active end surface of the long rod assembly to form a loop structure; S3: repeating the weft insertion and beating action in S2 4-5 times; S4: after the long rod assembly moves a certain distance following the base cloth under the drive of the annular crawler structure, the driving mechanism drives the relatively arranged long rod assemblies to disengage, thereby realizing loop weaving.

[0012] Furthermore, in S2, the looping warp threads forming the looping structure are arranged on an independent heald frame; when the heald frame drives the looping warp threads to interweave once, the reed performs at least one weft beating action.

[0013] The beneficial effects of the present invention are as follows: the present invention is a loop fabric weaving device and weaving method, which can realize loop modification based on a conventional loom without changing the loom itself, which is simple and convenient; the device is installed on both sides of the loom, and through the intermittent dynamic intervention and exit of the movable long rod assembly, a temporary support structure is formed on the fabric surface, which can realize rapid forming of the loop structure and stable loop control; directly utilize the original weft and warp feeding system, with low modification cost, and realize uninterrupted production of loop fabric on the loom, and the loop size is adjustable, which can meet the needs of diversified loop products and improve loop efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] Figure 1 is a side view of Example 1;

[0016] Figure 2 is a top view of Example 1;

[0017] Figure 3 is a top view of the drive mechanism;

[0018] Figure 4 It is a structural diagram of the active end docking;

[0019] Figure 5 is a schematic structural diagram of the looped fabric in Example 2;

[0020] Figure 6 Schematic diagram of the structure of the looped fabric in Example 1. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] Example 1

[0023] See also Figure 1 , Figure 1 It is a side view of the present embodiment, which includes a loom body (not shown). The base fabric 1 after weaving is set on the loom body and moves upward; the annular crawler 2 is set on both sides of the loom body perpendicular to the paper surface. The annular crawler 2 is a rotary structure, and the rotation of the annular crawler 2 is achieved by driving the driving wheel by a servo motor. The side of the annular crawler 2 close to the base fabric also moves upward, and the side of the annular crawler 2 away from the base fabric moves downward; a plurality of long rod assemblies 3 are detachable at equal intervals on the annular crawler 2; one end of the bottom of the base fabric 1 is the front stop 4, and the triangular area formed between the two warps 12, the reed (not shown) is initially located at the rear stop 5 of the triangular area, and the area between the front stop 4 and the rear stop 5 is the moving area of ​​the reed.

[0024] See also Figure 2 , Figure 2 This is a top view of the present embodiment, in which the base fabric 1 also moves upward. On the left and right sides of the base fabric 1 are N long rod assemblies 3 fixed to the annular crawler 2. The fixing portion 31 of the long rod assembly 3 is fixedly connected to the annular crawler 3. The movable end 32 of the long rod assembly 3 is inserted between the fixing portion 31. The driving assembly 6 drives the movable ends of the long rod assemblies 3 arranged opposite to each other on the left and right sides to dock. The driving assembly 6 includes a compressor 61 and an integrator 62 arranged in series. The integrator 63 is connected to the long rod assembly 3 through a distribution valve 64 (see Figure 3 ), so that the gas generated by the compressor 61 enters the integrator 62, and passes through the integrator 62 and the distribution valve 64 to the rod cavity or rodless cavity of the corresponding long rod assembly 3, thereby realizing the extension or retraction of the long rod assembly 3, and then realizing the docking or separation of the movable ends 32 of the two relative long rod assemblies 3.

[0025] See also Figure 4 , Figure 4 This is a structural diagram of the long rod assembly 3 when the movable ends 32 are docked. In the figure, a docking groove 34 is provided at the end of the movable end 32 on the left, and a docking protrusion 33 is protruded from the end of the movable end 32 on the right. The docking protrusion 33 cooperates with the docking groove 34 to ensure the coaxiality between the two movable ends 32.

[0026] See also Figure 6 , Figure 6 A plurality of base fabrics 1 with loop structures 11 are formed on the middle foundation from right to left. The right end of the base fabric 1 is the front stop point 4, and a triangular area is formed between the two warp threads 12. The reed (not shown) is initially located at the rear stop point 5 of the triangular area, and the area between the front stop point 4 and the rear stop point 5 is the moving area of ​​the reed.

[0027] For production Figure 6 The present embodiment discloses a method for weaving a loop fabric, comprising the following steps:

[0028] S1: Select a long rod assembly 3 with a suitable diameter according to the loop structure 11, and connect the long rod assembly 3 to the endless track 2 and the drive assembly 6;

[0029] In S1 , the diameter of the movable end 32 of the long rod assembly 3 and the distance between adjacent movable ends 32 are determined according to the height and density of the loop structure 11 .

[0030] S2: The endless crawler 3 moves the two long rod assemblies 3 arranged opposite to each other to the area between the front stop point 4 and the rear stop point 5. The driving assembly 6 drives the long rod assemblies 3 arranged opposite to each other to dock. The reed 5 starts beating up the weft from the rear stop point, pushing the weft yarn to the front stop point 4, forming an interweaving constraint and forcing the warp yarn 12 to wrap around the surface of the movable end 32 of the long rod assembly 3 to form a loop structure 11.

[0031] S3: Repeat the weft insertion and beating-up actions in S2 4-5 times. The subsequent weft yarns are interwoven with the warp yarns to compact and fix the initial loop structure 11, forming a stable three-dimensional loop structure 11. During the beating-up cycle, the warp yarn tension fluctuation is controlled within the range of ±5N to prevent the loops from shrinking or deforming.

[0032] S4: After the long rod assembly 3 moves a certain distance following the base fabric 1 driven by the annular crawler 2, the driving mechanism 6 drives the relatively arranged long rod assembly 3 to disengage, thereby realizing loop weaving. The loop structure 11 formed in this way is stable, and the next long rod assembly 3 is started synchronously to enter the docking position, and S1 to S4 are executed cyclically to realize uninterrupted and continuous loop fabric production.

[0033] In the above embodiment, the looped fabric is formed as follows Figure 6 As described above, the loop structure 11 and the base fabric 1 are connected at the same point at both ends.

[0034] Example 2

[0035] See also Figure 5 、 Figure 6 , Figure 5 and Figure 6 The difference is that Figure 5The middle loop structure 11 is not connected to the base fabric 1 at the same point. There is at least one weft thread between the two ends of the loop structure 11 to maintain the stability of the loop fabric. Figure 5 The weaving of the middle loop fabric adopts the following steps in this embodiment:

[0036] S1: Select a long rod assembly 3 with a suitable diameter according to the loop structure 11, and connect the long rod assembly 3 to the endless track 2 and the drive assembly 6;

[0037] In S1 , the diameter of the movable end 32 of the long rod assembly 3 and the distance between adjacent movable ends 32 are determined according to the height and density of the loop structure 11 .

[0038] S2: The endless crawler 2 moves the two long rod assemblies 3 arranged opposite to each other to the area between the front stop point 4 and the rear stop point 5. The driving assembly 6 drives the long rod assemblies 3 arranged opposite to each other to form a looping structure 11. The looping warp 13 is arranged on an independent heald frame. When the heald frame drives the looping warp 13 to interweave once, the reed performs at least one weft beating action, that is, there is at least one weft between the two ends of the looping warp 13 and the base fabric 1. Subsequently, the reed continues to perform the beating action from the rear stop point 5, pushing the weft yarn to the front stop point 4, forming an interweaving constraint and forcing the warp yarn to cover the surface of the movable end 32 of the long rod assembly 3 to form the looping structure 11.

[0039] S3: Repeat the weft insertion and beating-up actions in S2 4-5 times. The subsequently inserted weft yarns are interwoven with the warp yarns to compact and fix the initial loop structure 11, forming a stable three-dimensional loop structure 11. During the beating-up cycle, the warp yarn tension fluctuation is controlled within the range of ±5N to prevent the loop structure 11 from shrinking or deforming.

[0040] S4: After the long rod assembly 3 moves a certain distance following the base fabric 1 under the drive of the annular crawler 2, the driving mechanism 6 drives the relatively arranged long rod assembly 3 to disengage, thereby realizing the weaving of the looped fabric. The looped structure 11 formed in this way is stable, and the next long rod assembly 3 is started synchronously to enter the docking position, and S1 to S4 are executed cyclically to realize uninterrupted and continuous looped fabric production.

[0041] Example 3

[0042] See also Figure 1-5 , a loop fabric with a loop height of 2.5±0.2 mm was prepared on a rapier loom.

[0043] The weaving device includes:

[0044] (1) Rapier loom body: includes conventional heald frame, reed and beating mechanism; the beating mechanism has a stroke that is 12% longer than conventional one;

[0045] (2) Annular crawler belt 2: Two annular crawler belts 2 are symmetrically arranged on both sides of the loom;

[0046] (3) Long rod assembly 3: installed on both sides of the annular crawler 2, the total axial length of the long rod assembly 3 is 48-52% of the width of the loom;

[0047] The movable end 32 of the long rod assembly 3 has a diameter of 5 mm, a groove depth of the docking groove 34 of one movable end 32 is 0.1 mm, and a docking protrusion 33 of the other movable end 21 is 0.1 mm.

[0048] The weaving steps are as follows:

[0049] S1: Start the servo motor to drive the long rod assembly 3 installed on the annular crawler 3 on both sides to move horizontally toward the center of the loom at a speed of 0.5m / s when the warp yarn is spread out and the reed is at the rear stop point 5; the long rod assembly 3 is automatically corrected by the concave-convex matching guidance of the docking protrusion 33 and the docking groove 34, and finally there is no gap in the docking seam, and the weft yarn is introduced synchronously at this time.

[0050] S2: When the long rod assembly 3 continues to run to the front stop point 4, the reed performs the beating action, and the reed pushes the weft yarn to the front stop point 5; the warp yarn 13 covers the movable end 32 of the long rod assembly 3 to form an initial covered loop structure 11, the loop structure 11 has a height of 2.5±0.2mm, and a covering angle α=115°.

[0051] S3: Repeat S1 and S2 for 4 beating-up cycles; 1st-2nd beating-up: the weft yarn is pressed into the root of the loop structure 11 to form a preliminary lock; 3rd-4th beating-up: the weft yarn is cross-entangled to fix the loop structure 11 to the base fabric 1, forming a stable three-dimensional loop structure 11; the warp yarn tension is monitored in real time to prevent the loops from shrinking or deforming.

[0052] The interval between each weft beating is about 0.8s, and the tension of the warp yarn 12 is controlled within the range of 10N.

[0053] S4 When the loop structure is stabilized by S3, the movable end of the long rod assembly 3 is reversed and separated at a speed of 0.6m / s, exiting the loom area, and the next group of long rod assemblies 3 are started synchronously to enter the docking position, and steps one to four are executed in a cycle to achieve uninterrupted continuous production.

[0054] The present invention discloses a loop fabric weaving device and a weaving method. The device symmetrically installs annular crawlers 2 on both sides of a traditional rapier loom. Removable long rod assemblies 3 are installed at intervals on the annular crawler 2. The length of the long rod assembly 3 is adapted to 50% of the width of the loom. The diameter of the movable end 32 of the long rod assembly 3 is linearly positively correlated with the height of the target loop structure 11. During weaving, the movable ends 32 of the long rod assemblies 3 on both sides are precisely docked, and the steel reed pushes the weft yarn to the front stop point 4, forcing the loop warp yarn 13 to cover the movable end 32 of the long rod assembly 3 to form a loop. Structure 11, after 4-5 beating cycles and locking, the long rod assembly 3 automatically withdraws, and is replaced by the subsequent long rod assembly 3 to achieve uninterrupted production; the height of the loop structure 11 can be quickly adjusted by replacing long rod assemblies 3 with different diameters, and the special end design ensures accurate docking; compared with the traditional terry rod process, this solution has breakthrough solutions to the problems of stopping to change rods, uneven terry, and high transformation costs, thereby improving production efficiency and being compatible with the original structure of the rapier loom, providing an efficient and flexible production path for loop fabrics such as towels and decorative cloths.

[0055] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A loop fabric weaving device, characterized in that: include: The circular crawler of the rotary structure is symmetrically arranged on both sides of the loom body, and the movement direction of the side close to the base cloth is consistent with the movement direction of the base cloth; A plurality of long rod assemblies are arranged at intervals on the annular crawler, and their movement direction is perpendicular to the movement direction of the base cloth, wherein the long rod assemblies of two annular crawlers are arranged opposite to each other; The driving assembly is suitable for driving the movable ends of the long rod assemblies to extend independently and connect the movable ends of the two long rod assemblies that are arranged opposite to each other.

2. A loop fabric weaving device according to claim 1, characterized in that: When the movable ends of the two long rod assemblies are butted together, a butting groove is provided at the end of one of the movable ends, and a butting protrusion matching the butting groove is protruded from the end of the other movable end.

3. The loop fabric weaving device according to claim 1, characterized in that: The fixed portion of the long rod assembly is fixedly connected to the annular crawler, and the movable end of the long rod assembly is plugged and sealedly connected to the fixed portion.

4. The loop fabric weaving device according to claim 1, characterized in that: The drive assembly includes: compressor; an integrator connected to the compressor at its input end; Multiple distribution valves, the output end of the integrator is connected to the multiple distribution valves through a rotating hose, and the output end of the distribution valve is connected to the rod cavity or the rodless cavity of the long rod assembly.

5. The loop fabric weaving device according to claim 1, characterized in that: The long rod assembly is detachably fixed on the annular crawler.

6. A weaving method of the loop fabric weaving device according to any one of claims 1 to 5, characterized in that: The steps include: S1: Select a long rod assembly with a suitable diameter according to the loop structure, and connect the long rod assembly with the annular crawler and drive assembly; S2: The circular crawler moves the two long rod assemblies arranged opposite to each other to the front and rear stop points. The driving assembly drives the long rod assemblies arranged opposite to each other to dock. The reed starts beating up the weft yarn, pushing it to the front stop point to form an interweaving constraint and forcing the warp yarn to wrap around the active end surface of the long rod assembly to form a loop structure. S3: Repeat the weft insertion and beating action in S2 4-5 times; S4: After the long rod assembly moves a certain distance following the base fabric under the drive of the annular crawler structure, the driving mechanism drives the relatively arranged long rod assembly to separate, thereby realizing loop weaving.

7. A loop weaving method according to claim 6, characterized in that: In S2, the looping warp threads forming the looping structure are arranged on independent heald frames; When the heald frame drives the warp threads to interweave once, the reed performs the weft movement at least once.

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