Full-automatic preparation system and method for judging weft flat knitted fabric

Abstract

This invention discloses a fully automated system and method for preparing weft-knitted fabrics for dyeing and finishing, comprising a take-up device, a yarn separating device, and a fully automated airflow locking device. The take-up device includes a take-up lever, a yarn hook, a first linear drive mechanism, a first rotary drive mechanism, an outer conical sealing nozzle, a first negative pressure suction pipe, a second linear drive mechanism, an inner conical sealing nozzle, and a first shearing mechanism. The yarn separating device includes a yarn separating rod, a second rotary drive structure, a third linear drive mechanism, a waste yarn collection box, a negative pressure suction nozzle, a second shearing mechanism, and a fourth linear drive mechanism. The fully automated airflow locking device includes a negative pressure suction gun, a fifth linear drive mechanism, a stepper motor, a forming cam, a joint clamping mechanism, a third shearing mechanism, and a sixth linear drive mechanism. The fully automated system and method for preparing weft-knitted fabrics for dyeing and finishing of this invention can adapt to various batch numbers of DTY / FDY roll-packaged weft-knitted fabrics for dyeing and finishing, achieving fully automated preparation.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a fully automated system and method for preparing weft-knitted fabrics for dyeing and judging. Background Technology

[0002] Currently, the method used in the chemical fiber industry to evaluate the dyeing uniformity of DTY / FDY flexible fabrics involves manually collecting samples of the flexible knitted weft plain knit fabric one spindle at a time according to the serial number on the DTY / FDY product, completing the sample collection work before the dyeing uniformity evaluation. This process requires manually locating the thread ends on each roll from the yarn machine and splicing them with the thread ends at the knitting machine.

[0003] Automating the finding, transporting, and splicing of flexible bobbins can improve production efficiency, shorten knotting cycles, reduce labor costs, and improve product quality. It also enables optimization and management of the production process. However, there is currently no fully automated method for preparing weft-knitted fabrics for dyeing and finishing. The main reason is that the heads of the flexible bobbins are interwoven on the yarn package, making it difficult to accurately capture them, thus affecting subsequent work. Secondly, during the weft-knitting process, all 36 bobbins on the yarn package are in motion. Due to the short spacing between the bobbins and their oscillating state, adjacent bobbins often become entangled, leading to breakage and ultimately failure in weft-knitting. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a fully automated preparation system and method for dyeing and judging weft-knitted fabrics.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A fully automated preparation system for dyeing and sorting weft-knitted fabrics includes a yarn-picking device and a yarn-separating device;

[0007] The towing device includes:

[0008] Line take-up lever;

[0009] A line-hooking nozzle is installed at one end of the line-taking lever;

[0010] The first linear drive mechanism drives the line-taking lever to move;

[0011] The first rotary drive mechanism drives the take-up rod to rotate around the outer periphery of the coiled flexible body;

[0012] An outer cone sealing nozzle is installed at the other end of the line-taking rod;

[0013] The first negative pressure suction pipe is coaxially arranged with the thread take-up rod;

[0014] The second linear drive mechanism drives the first negative pressure suction pipe to move.

[0015] An inner conical sealing nozzle is installed at one end of the first negative pressure suction pipe near the outer conical sealing nozzle, and the inner conical sealing nozzle and the outer conical sealing nozzle are matched.

[0016] The first shearing mechanism is used to shear the flexible body;

[0017] The branching device includes:

[0018] Branching pole;

[0019] The second rotary drive structure drives the dividing rod to rotate;

[0020] The third linear drive mechanism drives the branch rod to move;

[0021] Waste filament recycling bin;

[0022] A negative pressure suction nozzle is connected to the waste filament recycling box via a pipe;

[0023] Second shearing mechanism;

[0024] The fourth linear drive mechanism drives the second shearing mechanism to move.

[0025] It also includes a fully automatic airflow locking device, which comprises:

[0026] Negative pressure suction gun;

[0027] The fifth linear drive mechanism drives the negative pressure suction gun to move.

[0028] Third shearing mechanism;

[0029] The sixth linear drive mechanism drives the third shearing mechanism to move.

[0030] Stepper motor;

[0031] A forming cam is connected to the rotating shaft of the stepper motor;

[0032] A connector clamping mechanism is mounted on the forming cam;

[0033] The seventh linear drive mechanism drives the joint clamping mechanism and the forming cam to move;

[0034] The fully automatic airflow locking device also includes:

[0035] The de-knotting mechanism is positioned directly opposite the joint clamping mechanism;

[0036] The fully automatic airflow locking device also includes:

[0037] Second negative pressure suction pipe;

[0038] A clamping switch is installed in the second negative pressure suction pipe to control the opening and closing of the second negative pressure suction pipe;

[0039] The hook tip includes:

[0040] The tubular portion has a gas channel extending in a first direction, and a first guide bevel is formed at one end of the tubular portion in the first direction, and a second guide bevel is formed at the other end of the tubular portion in the first direction.

[0041] A connecting plate is partially connected to the tubular part and is positioned opposite to and spaced from the inclined surface of the second conductor. A branch line inlet communicating with the gas channel is provided between the connecting plate and the tubular part. The branch line inlet is opposite to the inclined surface of the second conductor, and a roll-up side inlet is formed between the connecting plate and the inclined surface of the second conductor.

[0042] A first baffle plate is disposed on one side of the tubular portion and extends along a second direction, the second direction being perpendicular to the first direction;

[0043] The second baffle plate is located on the other side of the tubular portion and extends along a third direction, which is opposite to the second direction.

[0044] The third wire stop plate is connected to the connecting plate at one end, and the extension direction of the third wire stop plate is the third direction.

[0045] Preferably, it further includes:

[0046] An automatic transport identification and positioning device is used to transport the yarn roll to the take-up station. The automatic transport identification and positioning device is equipped with a transport track and photoelectric sensors to realize the positioning of the yarn roll and identify the A / B side of the yarn roll, thereby changing the position of the take-up device.

[0047] Preferably, it also includes a wire breakage sensor.

[0048] Preferably, each linear drive mechanism and each rotary drive mechanism uses a cylinder; and / or, each shearing mechanism uses pneumatic shears.

[0049] A fully automated method for preparing weft-knitted fabrics for dyeing and testing, which uses the aforementioned fully automated preparation system for weft-knitted fabrics for dyeing and testing, includes the following steps:

[0050] S1. Place the flexible body line into the negative pressure suction nozzle of the splitter device, so that the flexible body is in a taut state.

[0051] S2. The first linear drive mechanism of the take-up device pushes the take-up rod to the lower left 45 degrees of the rolled flexible body. Then, the first rotary drive mechanism drives the take-up rod to rotate 180 degrees around the outer periphery of the rolled flexible body to the upper left 45 degrees. The first linear drive mechanism returns to its original position, so that the hooking nozzle hooks the end of the thread in the rolled flexible body. The end of the thread at the hooking nozzle separates from other ends of the thread at the negative pressure suction nozzle.

[0052] S3. The second rotary drive structure of the splitting device drives the splitting rod to rotate toward the negative pressure suction nozzle, so that the splitting rod is exactly at the center of the two strands. The third linear drive mechanism retracts, and the splitting rod sends the strands to the top of the second cutting mechanism. The fourth linear drive mechanism drives the second cutting mechanism to rise. After the cutting is completed, the fourth linear drive mechanism retracts, and the first negative pressure suction pipe sends the cut strands to the fully automatic airflow locking device.

[0053] S4. The fifth linear drive mechanism drives the negative pressure suction gun to descend, exposing the flexible body delivered here. The seventh linear drive mechanism extends to hook the flexible body here with the connector clamping mechanism. The stepper motor drives the connector clamping mechanism to complete the knotting under the action of the forming cam.

[0054] S5. By retracting the sixth linear drive mechanism, the flexible body is positioned at the third shearing mechanism, and the third shearing mechanism cuts off the remaining flexible body of the joint.

[0055] S6. By blowing air through the unknotting mechanism to the joint clamping mechanism, the knot is blown out from the joint clamping mechanism and tightened at the same time, so that the flexible body can return to the negative pressure suction pipe during the subsequent weft flat fabric weaving process. The negative pressure suction gun transports the excess flexible body to the waste yarn box. The clamping switch is opened to allow the flexible body to go to the weaving machine.

[0056] Preferably, the method further includes the following steps:

[0057] S7. After the weft-knitted fabric is finished, the second linear drive mechanism retracts, causing the outer cone sealing nozzle and the inner cone sealing nozzle to separate. The first shearing mechanism cuts off the flexible body at this point. The flexible body remaining in the first negative pressure suction pipe is left to be knotted with the next batch of flexible bodies for use. The flexible body inside the take-up lever is taken away by the yarn winding machine.

[0058] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0059] The positive and progressive effects of this invention are as follows: the fully automated preparation system and method for dyeing and testing weft-knitted fabrics of this invention can adapt to various batches of DTY / FDY roll-packaged dyeing and testing weft-knitted fabrics and achieve fully automated preparation. Attached Figure Description

[0060] Figure 1This is a schematic diagram of the structure of the towing device according to a preferred embodiment of the present invention.

[0061] Figure 2 This is a schematic diagram of the branching device according to a preferred embodiment of the present invention.

[0062] Figure 3 This is a schematic diagram of the structure of a fully automatic airflow locking device according to a preferred embodiment of the present invention.

[0063] Figure 4 This is a schematic diagram of the hook nozzle according to a preferred embodiment of the present invention.

[0064] Figure 5 This is a structural schematic diagram of the hook nozzle from another perspective, representing a preferred embodiment of the present invention.

[0065] Figure 6 This is a cross-sectional view of the hook nozzle according to a preferred embodiment of the present invention.

[0066] Explanation of reference numerals in the attached figures:

[0067] Head-picking device 100

[0068] Line picker 101

[0069] 102 hook tip

[0070] First linear drive mechanism 103

[0071] First rotary drive mechanism 104

[0072] External cone sealing nozzle 105

[0073] First negative pressure suction pipe 106

[0074] Second linear drive mechanism 107

[0075] 108 Inner Cone Sealing Nose

[0076] First shearing mechanism 109

[0077] Distribution device 200

[0078] Branching bar 201

[0079] Second rotary drive structure 202

[0080] Third linear drive mechanism 203

[0081] Waste filament recycling bin 204

[0082] Negative pressure suction nozzle 205

[0083] Second shearing mechanism 206

[0084] Fourth linear drive mechanism 207

[0085] 300 Fully Automatic Airflow Locking Device

[0086] Negative pressure suction gun 301

[0087] Fifth linear drive mechanism 302

[0088] Stepper motor 303

[0089] 304 molded cam

[0090] 305 Connector clamping mechanism

[0091] Third shearing mechanism 306

[0092] Sixth linear drive mechanism 307

[0093] Seventh linear drive mechanism 308

[0094] De-knotting mechanism 309

[0095] Second negative pressure suction pipe 310

[0096] Clamping switch 311

[0097] Tubular part 1

[0098] First conductor inclined plane 11

[0099] Second conductor inclined plane 12

[0100] Connecting plate 2

[0101] First baffle plate 3

[0102] Second baffle plate 4

[0103] Third baffle plate 5

[0104] Branch line side inlet 6 Detailed Implementation

[0105] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0106] It should be noted that in the claims and specification of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0107] like Figures 1-6 As shown in the figure, this embodiment discloses a fully automatic preparation system for weft-knitted fabrics for dyeing and judging, which includes a head-picking device 100, a yarn-separating device 200, and a fully automatic airflow locking device 300.

[0108] The thread-picking device 100 includes a thread-picking rod 101, a thread-hooking nozzle 102, a first linear drive mechanism 103, a first rotary drive mechanism 104, an outer conical sealing nozzle 105, a first negative pressure thread-suction pipe 106, a second linear drive mechanism 107, an inner conical sealing nozzle 108, and a first shearing mechanism 109.

[0109] A hook nozzle 102 is installed at one end of the take-up lever 101. A first linear drive mechanism 103 is used to drive the take-up lever 101 to move. A first rotary drive mechanism 104 is used to drive the take-up lever 101 to rotate around the outer circumference of the coiled flexible body. An outer conical sealing nozzle 105 is installed at the other end of the take-up lever 101. A first negative pressure suction pipe 106 is coaxially arranged with the take-up lever 101. A second linear drive mechanism 107 drives the first negative pressure suction pipe 106 to move. An inner conical sealing nozzle 108 is installed at the end of the first negative pressure suction pipe 106 near the outer conical sealing nozzle 105, and the inner conical sealing nozzle 108 and the outer conical sealing nozzle 105 are matched.

[0110] The first cutting mechanism 109 is used to cut the flexible body. After the glove band is finished weaving, the 36 flexible bodies used in it need to be cut. At the same time, to ensure the normal operation of the next knotting, a sufficiently long flexible body needs to be left in the negative pressure suction pipe for later use. Therefore, in this embodiment, the first cutting mechanism 109 is installed at the junction of the head finding device and the negative pressure suction pipe. A conical sealing nozzle is designed in the thread cutting device. When the conical sealing nozzle is engaged, it can ensure the airtightness of the negative pressure suction pipe. When the conical sealing nozzle is disengaged, it can make room for the scissors to cut the thread.

[0111] Since the thread ends of each spindle of flexible body on the spinning machine are arranged in different directions, in this embodiment, a thread-taking rod 101 that can rotate 180 degrees is installed in the thread-taking device 100 to ensure that the thread ends in each direction can be accurately located.

[0112] The wire separating device 200 includes a wire separating rod 201, a second rotary drive structure 202, a third linear drive mechanism 203, a waste wire recycling box 204, a negative pressure suction nozzle 205, a second shearing mechanism 206, and a fourth linear drive mechanism 207.

[0113] The second rotary drive structure 202 is used to drive the dividing rod 201 to rotate. The third linear drive mechanism 203 is used to drive the dividing rod 201 to move. The waste filament recycling box 204 is used to recycle waste flexible materials. The negative pressure suction nozzle 205 is connected to the waste filament recycling box 204 through a pipe. The second shearing mechanism 206 is used to shear the flexible material. The fourth linear drive mechanism 207 is used to drive the second shearing mechanism 206 to move.

[0114] Since the 36 yarn ends on the yarn winding machine are distributed in a messy and disorderly manner and are tangled together, which affects subsequent work such as picking and knotting, the yarn splitting device 200 in this embodiment is equipped with a negative pressure device to control the 36 spindles of flexible yarn ends, so that the flexible body is in a taut state and arranged in an orderly manner. In addition, the negative pressure device can also recycle the waste yarn generated during the yarn splitting process.

[0115] Since there are 36 coiled flexible bodies on the yarn train, if they are picked up together, mutual interference is inevitable, while picking them up individually would be inefficient. Therefore, in this embodiment, the yarn separating rod 201 in the yarn separating device 200 accurately separates the 36 yarn ends controlled by the negative pressure device into 6 yarn ends each time. The 6 yarn ends separated each time correspond sequentially to the 6 coiled flexible bodies placed in each row on the yarn train, thereby realizing row-by-row picking and knotting, which can avoid mutual interference between yarn ends without affecting efficiency.

[0116] Furthermore, because the flexible material often sticks together on the roll, the negative pressure suction pipe cannot deliver the flexible material to the knotting point, resulting in knotting failure. Therefore, this invention installs a second cutting mechanism in the splitting device 200 to cut off the 6 wire ends split off by the splitting rod 201 each time. This allows the negative pressure suction pipe to deliver only the 6 cut wire ends to the knotting point, eliminating the need to consider the sticking of the flexible material on the roll.

[0117] The fully automatic airflow locking device 300 of this embodiment includes a negative pressure suction gun 301, a fifth linear drive mechanism 302, a stepper motor 303, a forming cam 304, a connector clamping mechanism 305, a third shearing mechanism 306, a sixth linear drive mechanism 307, a seventh linear drive mechanism 308, a de-knotting mechanism 309, a second negative pressure wire suction pipe 310, and a clamping switch 311.

[0118] The fifth linear drive mechanism 302 is used to drive the negative pressure suction gun 301 to move.

[0119] The forming cam 304 is connected to the shaft of the stepper motor 303.

[0120] The connector clamping mechanism 305 is mounted on the forming cam 304.

[0121] The sixth linear drive mechanism 307 is used to drive the third shearing mechanism 306 to move.

[0122] The seventh linear drive mechanism drives the joint clamping mechanism 305, the stepper motor 303 and the forming cam 304 to move.

[0123] The de-knotting mechanism 309 is positioned directly opposite the joint clamping mechanism 305.

[0124] The clamping switch 311 is installed on the second negative pressure suction pipe 310 and is used to control the opening and closing of the second negative pressure suction pipe 310.

[0125] In this embodiment, each linear drive mechanism and each rotary drive mechanism uses a cylinder, and each shearing mechanism uses pneumatic shears, but is not limited to these.

[0126] When the yarn winding machine reaches the designated position, the ends of 36 coiled flexible bodies are placed into the negative pressure suction nozzle 205, putting the flexible bodies under tension. The first linear drive mechanism 103 pushes the take-up lever 101 to a position 45 degrees to the lower left of the coiled flexible body. Then, the first rotary drive mechanism 104 drives the take-up lever 101 to rotate 180 degrees around the outer circumference of the coiled flexible body to a position 45 degrees to the upper left. The first linear drive mechanism 103 then returns to its original position. At this time, the hook nozzle 102 has hooked the end of the coiled flexible body, and the end at the hook nozzle separates from the other ends at the negative pressure suction nozzle 205. The second rotary drive structure 202 at the yarn separating device 200 drives the separating rod 201 to rotate towards the negative pressure suction nozzle 205, so that the separating rod 201 is exactly at the center of the two ends of the yarn. The third linear drive mechanism 203 retracts, at which point the wire separator 201 sends the wire end above the second cutting mechanism. The fourth linear drive mechanism 207 drives the rising second cutting mechanism 206 to rise. After the wire cutting is completed, the fourth linear drive mechanism 207 retracts, and the first negative pressure suction pipe 106 sends the cut wire end to the fully automatic airflow locking device 300. The fifth linear drive mechanism 302 drives the negative pressure suction gun 301 to descend, exposing the flexible body delivered here. The seventh linear drive mechanism 308 causes the connector clamping mechanism 305 to hook the flexible body here. The stepper motor 303 drives the connector clamping mechanism 305 to complete the knotting under the action of the forming cam 304. The sixth linear drive mechanism 307 retracts, positioning the flexible body at the third shearing mechanism 306. The third shearing mechanism 306 cuts off the remaining flexible body at the joint. The knot-removing mechanism 309 blows air onto the joint clamping mechanism 305, blowing the knot out of the joint clamping mechanism 305 while simultaneously tightening it. This allows the flexible body to return to the second negative pressure suction pipe 310 during the subsequent weft plain knitting process. The negative pressure suction gun 301 transports the excess flexible body to the waste yarn box. The clamping switch 311 opens, allowing the flexible body to reach the knitting machine. At this point, the pre-process preparation for weft plain knitting is complete. After the weft-knitted fabric is finished, the second linear drive mechanism 107 retracts, causing the outer cone sealing nozzle 105 and the inner cone sealing nozzle 108 to separate. The first shearing mechanism 109 cuts the flexible body here. The flexible body remaining in the negative pressure pipe is left to be knotted with the next batch of flexible bodies for use. The flexible body inside the take-up rod 101 will be taken away by the yarn winding car. At this point, the processes of take-up, yarn separation, yarn suction, knotting, weaving and yarn cutting of the equipment are completed.

[0127] Furthermore, the fully automatic preparation system for weft-knitted fabrics and the yarn breakage sensor for dyeing and judging in this embodiment also includes an automatic transport identification and positioning device for transporting the yarn roll to the take-up station. The automatic transport identification and positioning device is equipped with a transport track and a photoelectric sensor to realize the positioning of the yarn roll and the identification of the A / B side of the yarn roll, thereby changing the position of the take-up device 100.

[0128] like Figures 4-6As shown, this embodiment discloses a hook nozzle 102, which includes a tubular part 1, a connecting plate 2, a first wire-blocking plate 3, a second wire-blocking plate 4, and a third wire-blocking plate 5.

[0129] A gas channel extending in a first direction is provided on the tubular portion 1. A first guide bevel 11 is formed at one end of the tubular portion 1 in the first direction, and a second guide bevel 12 is formed at the other end of the tubular portion 1 in the first direction. Figure 1 In this embodiment, the first guide slope 11 slopes downwards, and the second guide slope 12 slopes from left to right. The first guide slope 11, designed to cooperate with the line-lifting rod 101, ensures that the flexible body slides smoothly from the line-lifting rod 101 into the line-hooking nozzle 102.

[0130] exist Figure 1 The connecting plate 2 is a vertical plate. A part of the connecting plate 2 is connected to the tubular part 1. The connecting plate 2 is positioned opposite to the inclined surface of the second conductor and is spaced apart. A branch line inlet 6 communicating with the gas channel is provided between the connecting plate 2 and the tubular part 1. A part of the branch line inlet 6 belongs to a part of the tubular part 1. The branch line inlet 6 is opposite to the inclined surface of the second conductor 12. A roll-up side inlet is formed between the connecting plate 2 and the inclined surface of the second conductor.

[0131] The first baffle plate 3 is located on one side of the tubular part 1. Figure 4 (It is represented on the left) and extends along the second direction, which is perpendicular to the first direction.

[0132] The second baffle plate 4 is located on the other side of the tubular part 1. Figure 4 (This is represented on the right) and extends along a third direction, which is opposite to the second direction.

[0133] One end of the third baffle plate 5 is connected to the connecting plate 2. Figure 4 The third baffle plate 5 extends in a third direction (as it is positioned on the upper side of the tubular portion 1). In this embodiment, the first baffle plate 3, the second baffle plate 4, and the third baffle plate 5 can be considered to be parallel.

[0134] More specifically, the first guide plate 3 and the second guide plate 4 are not on the same plane. A portion of the first guide plate 3 is sloped to align with the outer end of the inclined surface 11 of the first conductor. Figure 4 The middle part is connected to the lower end. The second guide plate 4 is partially sloped to connect with the outer end of the first conductor inclined surface 11. Figure 4 The connection is shown at the lower end. Furthermore, the extension direction of the connecting plate 2 is parallel to the inclined surface 12 of the second conductor.

[0135] In this embodiment, the hook tip 102 is a one-piece structure, which can improve the structural strength of the hook tip 102.

[0136] In this embodiment, the first baffle plate 3 and the second baffle plate 4 can prevent the flexible body from swinging downwards under the negative pressure of the wire splitting side inlet, thus preventing it from being sucked back in by the negative pressure of the coil side inlet, causing the flexible body to wrap around the lower side of the hook nozzle 102. The third baffle plate 5 can block the airflow generated by the negative pressure above the hook nozzle 102, allowing the flexible body on the wire splitting side to swing upwards under the negative pressure and be sucked back in by the negative pressure of the coil side inlet, causing the flexible body to wrap around the upper side of the hook nozzle 102. Arranging the wire splitting side inlet and the coil side inlet at the front and rear sections of the hook nozzle 102 can prevent the two flexible bodies from entangled during the suction process under the negative pressure, thus preventing the flexible body from wrapping around the front section of the hook nozzle 102. In addition, the greater distance between the two inlet ends can also increase the length of the flexible body exposed within the negative pressure range of the hook nozzle 102, thereby making it more conducive to the suction of the flexible body.

[0137] Because the flexible body located outside the hook nozzle may become entangled on the hook nozzle during the process of being sent to the fully automatic airflow locking device under negative pressure, the present invention makes a special design for the hook nozzle at the head finding point so that it can hook the thread end found by the thread take-up lever and avoid the aforementioned entanglement phenomenon.

[0138] The fully automated preparation system for dyeing and testing weft-knitted fabrics in this embodiment includes various modules for the entire process of knitting the weft-knitted fabric (head-picking device 100, yarn-separating device 200, and fully automated airflow locking device 300), and discloses a fully automated preparation method for weft-knitted fabrics using the mutual coordination of various modules. This method can adapt to the fully automated preparation of various batches of DTY / FDY roll-packaged dyeing and testing weft-knitted fabrics.

Claims

1. A fully automated preparation system for dyeing and judging weft-knitted fabrics, characterized in that, Includes a head-up device and a branching device; The towing device includes: Line take-up lever; A line-hooking nozzle is installed at one end of the line-taking lever; The first linear drive mechanism drives the line-taking lever to move; The first rotary drive mechanism drives the take-up rod to rotate around the outer periphery of the coiled flexible body; An outer cone sealing nozzle is installed at the other end of the line-taking rod; The first negative pressure suction pipe is coaxially arranged with the thread take-up rod; The second linear drive mechanism drives the first negative pressure suction pipe to move. An inner conical sealing nozzle is installed at one end of the first negative pressure suction pipe near the outer conical sealing nozzle, and the inner conical sealing nozzle and the outer conical sealing nozzle are matched. The first shearing mechanism is used to shear the flexible body; The branching device includes: Branching pole; The second rotary drive structure drives the dividing rod to rotate; The third linear drive mechanism drives the branch rod to move; Waste filament recycling bin; A negative pressure suction nozzle is connected to the waste filament recycling box via a pipe; Second shearing mechanism; The fourth linear drive mechanism drives the second shearing mechanism to move. It also includes a fully automatic airflow locking device, which comprises: Negative pressure suction gun; The fifth linear drive mechanism drives the negative pressure suction gun to move. Third shearing mechanism; The sixth linear drive mechanism drives the third shearing mechanism to move. Stepper motor; A forming cam is connected to the rotating shaft of the stepper motor; A connector clamping mechanism is mounted on the forming cam; The seventh linear drive mechanism drives the joint clamping mechanism and the forming cam to move; The fully automatic airflow locking device also includes: The de-knotting mechanism is positioned directly opposite the joint clamping mechanism; The fully automatic airflow locking device also includes: Second negative pressure suction pipe; A clamping switch is installed in the second negative pressure suction pipe to control the opening and closing of the second negative pressure suction pipe; The hook tip includes: The tubular portion has a gas channel extending in a first direction, and a first guide bevel is formed at one end of the tubular portion in the first direction, and a second guide bevel is formed at the other end of the tubular portion in the first direction. A connecting plate is partially connected to the tubular part and is positioned opposite to and spaced from the inclined surface of the second conductor. A branch line inlet communicating with the gas channel is provided between the connecting plate and the tubular part. The branch line inlet is opposite to the inclined surface of the second conductor, and a roll-up side inlet is formed between the connecting plate and the inclined surface of the second conductor. A first baffle plate is disposed on one side of the tubular portion and extends along a second direction, the second direction being perpendicular to the first direction; The second baffle plate is located on the other side of the tubular portion and extends along a third direction, which is opposite to the second direction. The third wire stop plate is connected to the connecting plate at one end, and the extension direction of the third wire stop plate is the third direction.

2. The fully automated preparation system for weft-knitted fabrics for dyeing and judging as described in claim 1, characterized in that, Also includes: An automatic transport identification and positioning device is used to transport the yarn roll to the take-up station. The automatic transport identification and positioning device is equipped with a transport track and photoelectric sensors to realize the positioning of the yarn roll and identify the A / B side of the yarn roll, thereby changing the position of the take-up device.

3. The fully automated preparation system for weft-knitted fabrics for dyeing and judging as described in claim 2, characterized in that, It also includes a wire breakage sensor.

4. The fully automated preparation system for weft-knitted fabrics for dyeing and judging as described in claim 1, characterized in that, Each linear drive mechanism and each rotary drive mechanism uses a cylinder; and / or, each shearing mechanism uses pneumatic shears.

5. A fully automated method for preparing weft-knitted fabrics for dyeing and finishing, characterized in that, Using the fully automated preparation system for dyeing and judging weft-knitted fabrics as described in any one of claims 1-4, the method includes the following steps: S1. Place the flexible body line into the negative pressure suction nozzle of the splitter device, so that the flexible body is in a taut state. S2. The first linear drive mechanism of the take-up device pushes the take-up rod to the lower left 45 degrees of the rolled flexible body. Then, the first rotary drive mechanism drives the take-up rod to rotate 180 degrees around the outer periphery of the rolled flexible body to the upper left 45 degrees. The first linear drive mechanism returns to its original position, so that the hooking nozzle hooks the end of the thread in the rolled flexible body. The end of the thread at the hooking nozzle separates from other ends of the thread at the negative pressure suction nozzle. S3. The second rotary drive structure of the splitting device drives the splitting rod to rotate toward the negative pressure suction nozzle, so that the splitting rod is exactly at the center of the two strands. The third linear drive mechanism retracts, and the splitting rod sends the strands to the top of the second cutting mechanism. The fourth linear drive mechanism drives the second cutting mechanism to rise. After the cutting is completed, the fourth linear drive mechanism retracts, and the first negative pressure suction pipe sends the cut strands to the fully automatic airflow locking device. S4. The fifth linear drive mechanism drives the negative pressure suction gun to descend, exposing the flexible body delivered here. The seventh linear drive mechanism extends to hook the flexible body here with the connector clamping mechanism. The stepper motor drives the connector clamping mechanism to complete the knotting under the action of the forming cam. S5. By retracting the sixth linear drive mechanism, the flexible body is positioned at the third shearing mechanism, and the third shearing mechanism cuts off the remaining flexible body of the joint. S6. By blowing air through the unknotting mechanism to the joint clamping mechanism, the knot is blown out from the joint clamping mechanism and tightened at the same time, so that the flexible body can return to the negative pressure suction pipe during the subsequent weft flat fabric weaving process. The negative pressure suction gun transports the excess flexible body to the waste yarn box. The clamping switch is opened to allow the flexible body to go to the weaving machine.

6. The method as described in claim 5, characterized in that, It also includes the following steps: S7. After the weft-knitted fabric is finished, the second linear drive mechanism retracts, causing the outer cone sealing nozzle and the inner cone sealing nozzle to separate. The first shearing mechanism cuts off the flexible body at this point. The flexible body remaining in the first negative pressure suction pipe is left to be knotted with the next batch of flexible bodies for use. The flexible body inside the take-up lever is taken away by the yarn winding machine.

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