Double-layer yarn preparation device of automatic drawing-in machine

Abstract

The invention discloses a double-layer yarn preparation device of an automatic drawing-in machine. The double-layer yarn preparation device comprises a yarn frame support, a yarn clamping plate system and a yarn tension adjusting system. The screen frame support comprises a left square tube, a right square tube, an upper beam and a lower beam. The yarn clamping plate system comprises a brush roller, a pair of fixed upper-layer yarn clamping plates, a pair of movable lower-layer yarn clamping plates and a lower-layer yarn clamping plate driving mechanism; the yarn tension adjusting system adopts a lead screw nut lifting mechanism and a worm and gear transmission mechanism and comprises a lead screw, a nut, a driving rod, a worm gear and a transmission rod. According to the double-layer yarn preparation device of the automatic drawing-in machine, two different yarn combinations can be achieved, warp beams arranged in proportion can be directly put on the automatic drawing-in machine for drawing-in without being processed by a leasing machine, the warp beams are put on a weaving machine after being drawn-in, and direct start-up can be achieved without other procedures, so that the stop time of the weaving machine is shortened, and the production efficiency is improved. The labor and equipment investment cost is saved, the production efficiency is greatly improved, the effect is obvious, and the practical production problem of an enterprise is successfully solved.

Description

Technical Field

[0001] The invention relates to auxiliary equipment of an automatic warp drawing-in machine, in particular to a double-layer yarn preparation device of an automatic warp drawing-in machine. Background Art

[0002] The automatic warp drawing machine is a precision textile equipment integrating mechanical, photoelectric and pneumatic functions, and has the characteristics of high running speed and accurate warp drawing.

[0003] The YXS-A automatic warp drawing machine is a domestically developed automatic warp drawing machine with a maximum drawing speed of 140 warp yarns per minute. It can draw the warp yarns into the warp stop piece, heald and reed at one time. The performance of the YXS-A automatic warp drawing machine is comparable to the Delta110 automatic warp drawing machine of Stäubli Company in Switzerland.

[0004] The YXS-A automatic warp drawing machine has five modules: heald module, yarn splitting module, reed module, warp dropper module and creel module. The creel module combines the creel with the weaving beam vehicle and is used to move, prepare and remove the warp beam. Yarn preparation is the preparation process for warp drawing. The yarn preparation work needs to be completed on the creel vehicle. The yarn preparation device is an important part of the creel vehicle. With the continuous changes in the denim warp drawing process, the warp beam is a combination of two different yarns. The warp yarn needs to be divided into two layers and arranged in proportion to meet the requirements of the fabric style.

[0005] The existing problems of the YXS-A automatic warp drawing-in machine are: there is a large position difference between the upper and lower layers of yarn on the warp beam, which are composed of two different yarns and arranged in proportion; the yarn separating mechanism on the automatic warp drawing-in machine can only work in a fixed position, and although the yarn preparation device can prepare double-layer yarns, the yarn separating mechanism cannot achieve normal yarn separation due to the large position difference of the lower layer of yarn.

[0006] At present, there are two main methods to solve the above problems: (1) Purchase a twisting machine from Stäubli, Switzerland, and arrange the double-layer yarn warp beams through twisting before threading them through the warping machine. This method requires the company to invest millions of yuan, greatly increasing the economic burden.

[0007] (2) The double-layer yarn warp beam is not threaded in proportion on the automatic warp drawing machine, and then the loom is put on the shaft and the machine is started normally; because the threading is not done in proportion on the automatic warp drawing machine, the proportion of the two layers of yarn is not distinguished, which does not meet the production process requirements. Therefore, it is necessary to stop the machine for manual nodding in proportion. After nodding, the warp must be re-tied to ensure that the arrangement of the yarn after nodding is consistent with the arrangement on the weaving shaft. Nodding requires the operator to count and distinguish the upper and lower layers according to the proportion of the upper and lower layers marked on the process plate. The time required for simple proportions is less, and the time required for complex proportions is more. In addition, each proportion cycle cannot be counted wrongly. Once the number is wrong, it must be counted again. One nodding takes at least 30 minutes and at most 1 hour. Therefore, the entire nodding and warp tying process takes about 2 hours, with long downtime and high labor intensity, which seriously affects production efficiency. Summary of the invention

[0008] The object of the present invention is to solve the above problems and to provide a double-layer yarn preparation device for an automatic warp drawing-in machine, which can realize that a warp beam with two different yarn combinations and arranged in proportion can be directly threaded on the automatic warp drawing-in machine without being twisted by a twisting machine.

[0009] The technical solution to achieve the purpose of the present invention is: a double-layer yarn preparation device for an automatic warp drawing-in machine, comprising a yarn frame bracket, a yarn clamping plate system and a yarn tension adjustment system.

[0010] The yarn frame bracket comprises a left square tube, a right square tube, an upper beam and a lower beam; two ends of the upper beam are respectively fixedly connected to the left square tube and the right square tube; two ends of the lower beam are respectively connected to the yarn tension adjustment system.

[0011] The yarn clamping plate system comprises a brush roller, a pair of fixed upper yarn clamping plates, a pair of movable lower yarn clamping plates and a lower yarn clamping plate driving mechanism.

[0012] The brush roller is installed at the upper end of the upper beam; the pair of fixed upper yarn clamping plates include a first upper yarn clamping plate installed on the upper beam and a second upper yarn clamping plate installed on the lower beam; the pair of movable lower yarn clamping plates include a first lower yarn clamping plate installed on the upper beam and located above the first upper yarn clamping plate and a second lower yarn clamping plate installed on the lower beam and located below the second upper yarn clamping plate; the lower yarn clamping plate driving mechanism includes a first electric push rod installed at the left end of the first lower yarn clamping plate and a second electric push rod installed at the left end of the second lower yarn clamping plate.

[0013] The yarn tension adjustment system adopts a screw-nut lifting mechanism and a worm gear transmission mechanism, including a screw, a nut, a drive rod, a worm wheel and a transmission rod; the lower end of the screw is connected to the lower beam, the upper end of the screw is connected to the nut, the upper end of the nut is connected to the drive rod through a pin, and the upper part of the drive rod is also connected to the turbine through a pin; the screw, nut, drive rod and worm wheel are each provided with a pair, and the pair of worm wheels are connected by a transmission rod.

[0014] Furthermore, a square hole is provided on the top of the driving rod for facilitating the insertion of a ratchet wrench.

[0015] Furthermore, a strip brush is provided on the brush roller.

[0016] Furthermore, an anti-reversal ratchet mechanism is provided on the right side of the brush roller, and a rocker is provided on the anti-reversal ratchet mechanism.

[0017] Furthermore, the yarn clamping plate system also includes a yarn clamping strip storage bracket installed at the lower end of the lower beam.

[0018] The present invention has positive effects: the double-layer yarn preparation device of the automatic warp drawing machine of the present invention can realize that the warp beams with two different yarn combinations and arranged in proportion can be directly put on the automatic warp drawing machine for drawing without being processed by a twisting machine. After the warp beams are drawn, the loom can be started directly without other procedures, which not only reduces the downtime of the loom, saves manpower and equipment investment costs, but also greatly improves production efficiency, with obvious effects, successfully solving the actual production problems of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a double-layer yarn preparation device of an automatic warp drawing-in machine according to the present invention. DETAILED DESCRIPTION

[0020] (Example 1) See also Figure 1 The double-layer yarn preparation device of the automatic warp drawing machine of this embodiment includes a yarn frame bracket, a yarn clamping plate system and a yarn tension adjustment system.

[0021] The yarn frame support comprises a left square tube 11, a right square tube 12, an upper beam 13 and a lower beam 14, all of which are made of carbon structural steel to ensure high strength and rigidity, and can withstand greater pressure and weight without being easily deformed.

[0022] The length of the left square tube 11 and the right square tube 12 are both 1310 mm, and the wall thickness is 4 mm. The upper beam 13 is made of H-shaped pipes cut and welded, with a length of 2900 mm and a wall thickness of 3 mm. The two ends of the upper beam 13 are respectively fixedly connected to the left square tube 11 and the right square tube 12. The lower beam 14 is a rectangular square tube with a length of 2600 mm and a wall thickness of 3 mm. The two ends of the lower beam 14 are respectively connected to the yarn tension adjustment system.

[0023] The yarn clamping plate system comprises a brush roller 21, a yarn clamping strip storage bracket 22, a pair of fixed upper yarn clamping plates, a pair of movable lower yarn clamping plates and a lower yarn clamping plate driving mechanism.

[0024] The brush roller 21 is installed at the upper end of the upper beam 13, and its function is to pre-tighten the drawn yarn through the friction of the brush. The brush roller 21 is made of aluminum alloy, which is not only light, hard, and corrosion-resistant, but also has good machinability and is easy to process and shape. Four long grooves are processed on the brush roller 21 for installing the strip brush 21-1. The material of the strip brush 21-1 is pig bristles, which are not only hard, but also have good bending resistance and corrosion resistance. In this way, when the denim yarn contacts it, the mutual squeezing force between the brushes will keep the yarn in a stable contact state.

[0025] An anti-reverse ratchet mechanism 210 is installed on the right side of the brush roller 21. When preparing yarn, the warp yarn is led upward from the lower part of the yarn frame bracket 1 to the brush roller 21. The rocker 211 of the anti-reverse ratchet mechanism 210 is moved, and the yarn can be pre-tensioned and positioned under the friction of the brush.

[0026] The yarn clip strip storage bracket 22 is installed at the lower end of the lower beam 14 and is used for storing the yarn clip strips.

[0027] A pair of fixed upper yarn clamping plates includes a first upper yarn clamping plate 23 - 1 installed on the upper beam 13 and a second upper yarn clamping plate 23 - 2 installed on the lower beam 14 .

[0028] A pair of movable lower-layer yarn clamping plates include a first lower-layer yarn clamping plate 24-1 installed on the upper beam 13 and located above the first upper-layer yarn clamping plate 23-1, and a second lower-layer yarn clamping plate 24-2 installed on the lower beam 14 and located below the second upper-layer yarn clamping plate 23-2, that is, a pair of movable lower-layer yarn clamping plates are arranged on the outside of a pair of fixed upper-layer yarn clamping plates.

[0029] The lower-layer yarn clamping plate driving mechanism includes a first electric push rod 25-1 installed at the left end of the first lower-layer yarn clamping plate 24-1 and a second electric push rod 25-2 installed at the left end of the second lower-layer yarn clamping plate 24-2. Control switches (not shown) are installed on the backs of the first electric push rod 25-1 and the second electric push rod 25-2. A slide rail (not shown) is provided on the backs of the first lower-layer yarn clamping plate 24-1 and the second lower-layer yarn clamping plate 24-2, and several groups of fixed pulleys cooperating with the slide rails are correspondingly installed on the upper beam 13 and the lower beam 14. When working, the electric push rods are controlled by the remote control to drive the lower-layer yarn clamping plate to move left and right.

[0030] The yarn tension adjustment system adopts a screw nut lifting mechanism and a worm gear transmission mechanism, including a screw 31, a nut 32, a driving rod 33, a worm wheel 34 and a transmission rod 35; a pair of screws 31, nuts 32, driving rods 33 and worm wheels 34 are arranged on the left and right.

[0031] The lower end of the lead screw 31 is connected to the lower beam 14, the upper end of the lead screw 31 is connected to the nut 32, the upper end of the nut 32 is connected to the driving rod 33 through a pin, the upper part of the driving rod 33 is also connected to the turbine 34 through a pin, and the top of the driving rod 33 is provided with a square hole 33-1 for inserting a ratchet wrench. A pair of worm gears 34 are connected by a transmission rod 35 to achieve synchronous lifting.

[0032] The ratchet wrench is rotated clockwise, and the driving rod 33 drives the screw rod 31 to move upward, and the yarn tension becomes smaller; the ratchet wrench is rotated counterclockwise, and the driving rod 33 drives the screw rod 31 to move downward, and the yarn tension becomes larger.

[0033] At the same time, by rotating the ratchet wrench, the driving rod 33 drives the worm wheel 34 to rotate, and the worm wheel 33 drives the transmission rod 35 to realize the synchronous movement of the left and right screw nut lifting mechanisms, that is, rotating any driving rod 33 at the left and right ends with the ratchet wrench can achieve synchronous lifting.

[0034] The specific operation process of the double-layer yarn preparation device of the automatic warp drawing-in machine of this embodiment is as follows: ① Yarn drawing: Push the warp beam car with the warp beam to the creel car 100, insert the pin key to connect the warp beam car with the creel car 100, and then push the creel car 100 to the double-layer yarn preparation device.

[0035] Two people cooperate to clamp the warp yarn with a yarn clamping strip, lead the warp yarn from the warp beam, and lead it upward from the lower part of the yarn frame bracket to the brush roller 21, and move the rocker 211 up and down to pre-tighten the yarn and position it, and hang a heavy hammer at each end of the yarn clamping strip to maintain proper tension of the yarn.

[0036] ② Yarn separation: Use a yarn pressing strip to first fix the yarn to the second lower yarn clamping plate 24-2 on the lower beam 14, then move the yarn from the brush roller 21 and lay it flat on the ground, lift out the twisted yarn in the yarn, and separate the upper and lower layers of yarn.

[0037] ③ Yarn fixing: first lead the upper yarn to the brush roller 21 and pre-tighten it into position, then use two yarn pressing strips to press the upper yarn at the positions of the first upper yarn clamping plate 23-1 and the second upper yarn clamping plate 23-2 respectively, then cut the yarn between the brush roller 21 and the first upper yarn clamping plate 23-1, and pull out the waste yarn.

[0038] A nylon thread is placed between the two layers of yarn as the upper warp twisted thread, and then the lower layer of yarn is clamped with a yarn clamping strip, led out to the brush roller 21 and pre-tightened and positioned, and a yarn pressing strip is used to press the yarn at the position of the first lower layer yarn clamping plate 24-1.

[0039] ④ Yarn adjustment: Use a ratchet wrench to adjust the yarn tension, and use your hands to feel the yarn while adjusting to the appropriate tension.

[0040] ⑤ Yarn combing: After adjusting the yarn tension, use an iron wood comb or steel comb to comb the yarn up and down to complete the yarn preparation work.

[0041] ⑥ After the yarn preparation is completed, push the warp beam frame car 100 to the working position of the main machine of the warp drawing machine, remove the nylon strand from the left end, use the threading rod to pass the strand through the special hole for yarn separation and then fix the strand; when drawing the warp, pay attention to the changes in the position of the upper and lower layers of yarn. If the position deviates, use the remote control to adjust the left and right position of the lower yarn clamping plate to ensure that the yarn is always in the yarn separation working position.

Claims

1. A double-layer yarn preparation device for an automatic warp drawing-in machine, characterized in that: It includes a yarn frame support, a yarn clamping plate system and a yarn tension adjustment system; The yarn frame support comprises a left square tube (11), a right square tube (12), an upper beam (13) and a lower beam (14); two ends of the upper beam (13) are respectively fixedly connected to the left square tube (11) and the right square tube (12); two ends of the lower beam (14) are respectively connected to the yarn tension adjustment system; The yarn clamping plate system comprises a brush roller (21), a pair of fixed upper yarn clamping plates, a pair of movable lower yarn clamping plates and a lower yarn clamping plate driving mechanism; the brush roller (21) is mounted on the upper end of the upper beam (13); the pair of fixed upper yarn clamping plates comprises a first upper yarn clamping plate (23-1) mounted on the upper beam (13) and a second upper yarn clamping plate (23-2) mounted on the lower beam (14); the pair of movable lower yarn clamping plates comprises a first upper yarn clamping plate (23-1) mounted on the upper beam (13) and a second upper yarn clamping plate (23-2) mounted on the lower beam (14); 3) a first lower yarn clamping plate (24-1) mounted on the lower beam (14) and located above the first upper yarn clamping plate (23-1) and a second lower yarn clamping plate (24-2) mounted on the lower beam (14) and located below the second upper yarn clamping plate (23-2); the lower yarn clamping plate driving mechanism comprises a first electric push rod (25-1) mounted on the left end of the first lower yarn clamping plate (24-1) and a second electric push rod (25-2) mounted on the left end of the second lower yarn clamping plate (24-2); The yarn tension adjustment system adopts a lead screw and nut lifting mechanism and a worm gear transmission mechanism, comprising a lead screw (31), a nut (32), a driving rod (33), a worm wheel (34) and a transmission rod (35); the lower end of the lead screw (31) is connected to the lower beam (14), the upper end of the lead screw (31) is connected to the nut (32), the upper end of the nut (32) is connected to the driving rod (33) via a pin shaft, and the upper part of the driving rod (33) is also connected to the turbine (34) via a pin shaft; the lead screw (31), the nut (32), the driving rod (33) and the worm wheel (34) are each provided with a pair, and the pair of worm wheels (34) are connected via a transmission rod (35).

2. The double-layer yarn preparation device of the automatic warp drawing-in machine according to claim 1, characterized in that: The top of the driving rod (33) is provided with a square hole (33-1) for facilitating the insertion of a ratchet wrench.

3. The double-layer yarn preparation device of the automatic warp drawing-in machine according to claim 1, characterized in that: The brush roller (21) is provided with a strip brush (21-1).

4. The double-layer yarn preparation device of the automatic warp drawing-in machine according to claim 1, characterized in that: An anti-reversal ratchet mechanism (210) is provided on the right side of the brush roller (21), and a rocker (211) is provided on the anti-reversal ratchet mechanism (210).

5. The double-layer yarn preparation device of the automatic warp drawing-in machine according to claim 1, characterized in that: The yarn clamping plate system also includes a yarn clamping strip storage bracket (22) installed at the lower end of the lower beam (14).

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