TW434337B - Method and apparatus for connecting cords/filaments - Google Patents

Abstract

An apparatus for welding monofilaments at a loom makes possible a method for a continuous process for weaving monofilaments into fabric. The apparatus comprises a stand (15) on which is mounted welding apparatus (16) and a filament alignment block (20). In the method, a monofilament (30a) in the loom is welded to the leading end of a monofilament (30) on a new spool of monofilament. By welding new monofilament to monofilament in the loom, restringing of the loom is avoided.

Description

4 343 3 7 V. Description of the invention (丨) Fa. Ming Fanyuan The present invention relates to a method and device for welding thermoplastic materials in a continuous industrial process. BACKGROUND OF THE INVENTION Shuttle looms used in the weaving process are quite complex in construction, with many warp beams, bobbins, spindles, reels, droop wire grooves, and tension suspension rings. (Fest ο ο ns), each string or single fiber must be hung on it. This is a very time-consuming process for a single rope. However, a typical stack of fabrics has about 600 to .2 0 0 ropes. It is necessary to rope all of a shuttle loom for the first operation. Hanging them up is a time-consuming and difficult process. Since the string or fiber is usually supplied by a spool or a package, the supply amount is limited. If there is no device to keep the shuttle loom coherent, then whenever the string or fiber of the spool is in the knit When it is used up, it is necessary to repeat the above process of binding and hanging once, which is very troublesome. Fortunately, in an industrial shuttle loom, before the end of the used string or fiber has passed through the loom, a new spool of fiber or fiber is tied to the end of the used string or fiber. In order to finally recover a little operational efficiency. In recent years, single-fiber materials, such as 5,173,136 issued to Agarwal et al. In the U.S. Patent and 5,7 4 3,9 7 issued to Sinopoli et al. As described in No. 5, it has been approved as a reinforcing material in composite materials. However, it has been found that the traditional type of string tying and splicing cannot be thought of as single fibers because single fibers tend to become stiff and smooth. Knot

il. (2) is too large, it will block the equipment and tend to slip. In addition, the monofilament wandering field slipped out of Fu Tong's winding splicing. In the process of weaving rayon fibers, especially for heavy-weight nylon monofilaments, it is very important to be able to attach one end of one single fiber to the end of another single fiber. (1 ) Tie on continuous warp beams or (2) Repair broken threads that break during weaving = When it was found that traditional tying and splicing would not work for single fibers, the inventors made many alternatives to tying and The method of splicing, experimenting and pooling the f materials, and finally decided to try a method of fusing each other on a shuttle loom using a single fiber. Once it is determined that single fibers can be fused using welding, the goal of the present invention is to focus on the development of a method and device to provide an economical wiring process. The present invention decides to use ultrasonic welding technology in this method, although other welding technologies can undoubtedly be used effectively. Ultrasonic welding includes generating high-frequency (20 仟 Hz or 40 仟 Hz) machine phase T vibration and transmitting it to the welding head. The ultrasonic welding head applies a force to the materials to be joined and uses intramolecular friction at the interface To melt the material. After the vibration stops, the welding head still maintains a strong force against the village material, and after cooling, a welding point is generated. Other objects of the present invention can be understood from the above description and the scope of patent application. Disclosure of the Invention — A method of continuously operating a shuttle loom for woven a thermoplastic string or single fiber fabric, comprising the following steps: (a) the first thermoplastic string or

43433 7-~~~ ----— Five 'invention description ⑶ " The front end of single fiber (30a), feeding-weaving device, after passing through the bobbin, needle drop slot, roller and Guide needle, then weaving the thermoplastic fine & single fiber (30a) into a fabric; (b) continuing to process the thermoplastic fine '= single fiber (30a) to the end of the thermoplastic string or single fiber (30a) "Or weld the end of the thermoplastic string or single fiber (30a) to the front end of the second thermoplastic c string or single fiber (30); and (d) continue to operate the shuttle loom for 1 ^ two thermoplastic strings Or single fiber (3 0) woven into a fabric. ^ This method uses a thermoplastic single-dimensional dimension of 2,000 to 2 0 '0 0 0 dT e X (number of branches or decitex) as an example of the fabric material. Explanation. 'In a comparative example, this method is applicable to the occasion of nylon string or single fiber. This method uses an ultrasonic' knowledge 'in the warp direction from 8 to 40 per p inch ( epi), or single fiber, and 1 to 8 wefts per inch in the weft direction, to make a wave weave. The mouth is taken as an example. Brother Ming. After the implementation of this method To make at least one end of two single fibers or strings (30, 30a) at the welding point (60), it is better to melt the front end of the welding point (60) so that the back end is loose ( 58) Does not block any part of the processing equipment. Another device for connecting thermoplastic strings or single fibers is provided, including-a welding tool (16) is set up on a fixture (丨 4), the fixture (14) It is rotatably mounted on a pillar (12), which is attached to a stand (15). The stand U 5) is lightweight and can be easily moved or separately Modify f to be dynamic, or fix it in another position in the alternative example. In the specific example exemplified, the support (1 2) is vertically erected and the centerpiece 4 ^ 433 7 V. Description of the invention (4 ) (1 4) is configured to be suitable for rotating around the pillar (丨 2) β. In the illustrated specific example, the welding tool (1 6) is an ultrasonic welding tool. The welding tool (1 6) has a welding The joint (18) and an anvil (20) should be combined with the welding of the material. The anvil (20) may include a right-supply collimation block (20a) or a left-supply cord alignment block (20a). 2 0 b). Another mold for welding string or fiber ends is provided, including a top plate (3 2, 4 8) and a bottom plate (40, 5 2), and a top plate (3 2, 4 8). The system is adapted to be press-fitted to the bottom plate (40, 52), wherein the top plate (32'48) has a groove (34, 50) that traverses the top plate (32, 48) more than half the length, and the bottom plate (40, 52) has A groove (46, 54) traversing the bottom plate (40, 52) less than half the length, and an opening (44) at the end of the groove (46, 54). When the top plate (32, 48) and the bottom plate (40, 52) are aligned and pressed together to form an anvil block (20), the grooves (34, 50) on the top plate (32, 48) are on the anvil block (20). ) Is opposite to the grooves (4, 6, 4) of the bottom plate (40, 5 2), and the bottom grooves (3, 4, 50) and the top plate grooves (46, 54) are on the plate (20). ) In the center. The openings (4 4) on the bottom plate (40, 5 2) are arranged to receive a welding head (1 8). Brief Description of the Drawings Fig. 1 shows a front view of an apparatus according to the present invention. Fig. 1a shows a side view of a device according to the invention. Fig. 2 shows a top view of a device of the present invention located adjacent to a warp frame of a shuttle loom. Fig. 2a shows a side view of a device according to the invention located adjacent to a warp frame of a shuttle loom. Figure 3a shows the top plate of a rope collimation block (the rope is supplied on the right).

4 343 3 7 iL, distinctly called (5j Chuang 3 b represents the side view of the top plate of circle 3 a. Chuang 3 c represents the bottom plate of a rope collimation block (for the right side). Figure 4 a represents a rope collimation block The top plate (the rope is supplied on the left). Broadcasting 4b shows the bottom plate of the rope collimation block (the rope is provided on the left). Figures 5 and 5a show a knurled welding country 6 used by the method of the present invention as a perspective view, Shows a welding head located next to a collimation block. Circle 7 is a perspective view showing a collimation block and an ultrasonic welding tool erected on a pillar. Figure 8 shows a welding situation according to the method of the invention DETAILED DESCRIPTION OF THE INVENTION Traditionally, ropes made of nylon and polygam are subject to knotting to connect to a new spool, or when the rope is broken, the knot is used as a repair measure. Purpose of the knot Originally, I wanted to tie the end of a nylon single fiber (10,000 decitex) to one end of another nylon single fiber. However, such nodules tend to form a large volume and it is difficult to pass through the thread of the shuttle loom. Holes in IS and needle drop, and easy to slip off when tension is applied. Nylon The fiber is a smooth, smooth and strong rope = it is relatively non-ductile, because there is almost no twist on its single fiber. An automatic entanglement device (air entanglement) cannot be used because there is not enough to entangle There is a test that caused an epoxy-based adhesive to be thrown away, and the crust did not have enough adhesion and flexibility to be pulled through the shuttle loom. Another type of connection is a thin yarn tightly wrapped with overlapping strings or Single fiber ends. However, wrapping the single fiber increases the total diameter of the joint

4 3 Wish 3 37 V. Description of the invention (6) Large, making it difficult to connect the smooth surface connected to the single woven fabric to block the bobbin or needle drop On the warp beam, it will require a lot of manpower. Entangling is just fine. Wrapping is unacceptable. Woven single fibers are often easy to loose during weaving. The thread reel and needle drop were pulled, and some connections were pulled off. Also, the end of the rope will be pulled up. The single fiber end wrapping connection is a time consuming and even if a new warp frame is only required to bind a package, if it is to be used to repair a broken single fiber, it must be tied together before weaving can continue. The monofilament-wrapped nylon is a thermoplastic material when processed in a physical finishing device, and is representative of all the thermoplastic materials that can be used in the present invention. : Thermoplastics, although solid at mild temperatures, soften or melt and flow at higher temperatures without permanently changing their chemical properties, so they return to their original state when the temperature drops back to mild. Because of this property, thermoplastic materials can be welded at low temperatures and joined at temperatures above the melting point of the material, especially ultrasonic welding. The present invention can use any type of welding equipment, which is suitable for the materials to be joined, such as a heating press, but in this article, it will be explained with particular reference to the use of ultrasonic welding tools for thermoplastic material joining. 1 and 1 a, in the example of the device that can be used in the method of the present invention, the device 10 includes a pillar 12 attached to a stand 15 and a welding tool 16 by means of a stand The mounting jig 14 is attached to the pillar 12. A power source 22, which may contain an electronic interface, may be carried by the gantry 15. The device is lightweight and can be moved anywhere, so device 10 can

Page 10 V. Description of the invention " ~ ~ 乂 Move to special shuttle loom to perform welding work. In the specific example given, the 'bench 15 is fixed to the shuttle loom to which it is applied. The mounting fixture 14 can be slid up and down along the pillar 12 to accommodate welding at different heights' and to make 360 around the pillar 12. Rotation for welding at different oblique positions relative to the stage 7. There is a wheel 24 connected to a counterweight system. When the rack-mounting fixture 4 slides up and down along the pillar 2 to help the movement of the #welding tool 16 in the specific example given, the welding tool 16 is An ultrasonic welding tool has a Tan joint 18 and a rope collimation block 20, which is used as a welding cutting board. After many experiments with different types of welding heads, it was found that, for the purpose here, a knurled welding head 1 8 (Figure 5) produced the best results. Experts in the art of this industry will admit that other welding heads can also obtain better results when used in different situations. ^ As far as Figures 2 and 2a are concerned, when a single fiber 30 spool 2 7 When it is about to run out, you can move the device 10 to the side of the warp beam holder 26, and at this time it is necessary to-the new single fiber 30a spool 27a 'while the end of the single fiber 30 has not yet passed the shuttle Before the loom (not shown), it is joined to one end of the single fiber 30. The operator must grasp the end 3 1 of the string or fiber 30 and pull it to the tandem device 1 0, and at the same time, pull the end 3 1 a of the string or fiber 3 〇 to the device 10 'Weld the two together. The new bobbin 27a is then placed on the warp frame to replace the old bobbin 27. Anyone skilled in this art will recognize that the warp frame and / or shuttle loom may be equipped with a sensor. When the end of the fiber or string 30 is measured, it can be provided.

43433 7 η. It is also possible to replace another warp beam with another warp beam. Therefore, when a new warp beam is moved into the position in the shuttle loom, all connections have been made in advance because the shuttle loom is relatively wide and the device i 0 can be moved according to the position 1 of a spool 2 7 on the warp frame and its relative relationship with the shuttle loom. In addition, in order to save space on the beam frame, the spools 2 7 can be stacked, and the rack mounting fixtures 14 can be raised and lowered on the pillars 2 in order to place the welding tool 16 on a spool 2 7 Near the height. As mentioned before, the shelf-mounted cooler 14 can be rotated on the support 12 if necessary. Now in terms of circles 3 and 4, one: the rope collimation block 20, which in the specific example includes a bottom plate 32, 48 and a top plate 40, 52. The rope collimation block 20a * shown in Figs. 3a, 3b and 3c is a collimation block for supplying the rope from the right. When the device 10 is placed beside the warp beam bracket 26, the rack mounting jig 14 is rotated around the pillar 12 and the single fiber to be welded can pass through the right or left side of the pillar. Because the single fibers 30 and 30 a are overlapping when performing welding, it is difficult to arrange so that the overlapping portion is exactly to the width of the welding, and there may be loose ends of the single fibers at the welding place = see Figure 8. Since a loose end is likely to be blocked in many places in the long line of the shuttle loom, it is important to note that when a single fiber passes through the shuttle loom, the loose end must be at the rear end of the welding point to avoid obstruction. The situation happened. By setting the right supply collimation block 20a (Figures 3a, 3b, 3c) and the left supply collimation block 20b (Figures 4a, 4b), the overlap of the single fiber ends to be welded can be controlled so that Loose fibers end in

O: \ 60 \ 60645.pid Page 12 ^ Description of the invention ⑼ When passing through the shuttle loom, it is behind the welding point. When the welding tool 16 is on the left side of the pillar 1 2, use the left supply line collimation block 2 0 b 'to ensure that the free end 5 8 of the single fiber 3 0 passes through the shuttle loom after the welding point 6 0 = Similarly, when the welding tool 16 is on the right side of the pillar 12, use the right supply line collimation block 20a to ensure that the end of the single fiber 3 and the welding point 60 are fused and the free end 5 8 is determined. In a direction that does not interfere with the equipment. In order to help determine that at least one of the two welded ends of the single fiber has been welded with the single fiber collimation block 2 0 a on the right side of FIG. 3 as an example, the bottom plate 3 2 has a single fiber 30 to hold the single fiber 30 The bottom plate 40 of the straight block 20 has a groove 4 for 6 weeks to hold a single fiber 30a in a combination—the groove 34 is used. Similarly, on the top plate 40. The two-phase compression merges 4 6 and advances to quasi-stacking. Opening 4 4 1 8. The grooves 34 and 34 in the welding 44 are sufficient when the fiber is top-welded and can be lowered. When the top plate 40 is aligned, the straight block 20a is provided so that the length of the single fiber is sufficient when the time is right. The plate 40 prevents visual determination and. 〇, 3 〇a through the grooves 34 and 4 so that they coincide in the opening 44 of the collimation block 20 & to receive a welding head when the welding operation is performed, the single fiber end in the grooves 4 6 The head will be above the end of the open dimension. As shown in the figure, because the groove extends through the opening 44, but on the edge 40a inside the opening "in the groove 46, the single fiber within the operator's / lifting 46 is indeed in the hole of the welding head 18 Hole 36 is used to install the plate 20 to the supersonic. Refer to Figure 4. In the left-single fiber alignment two: Block two, but the opposite direction (compared to Figure 3) in the groove ^ b , There is one; f; — the oppositely facing groove 54 is provided on the top extension on the bottom plate 48, and the upper side is divided by the left, and the left side is provided with

4 343 3 7 i. Description of the invention (10) The use of the standing block 20b is completely the same as that of the collimating block 20a. In the specific examples given, the single-fiber collimation blocks 20a, 20b have hinges 38. For the convenience of moving, "the skilled person in the bank will admit that the bottom plates 3 2, 4 8 are performed during welding. After completion, it must be separated from the top plate 40, 52, and the single fiber 30, 30a welded away from the single fiber alignment block 20. Circles 6 and 7 represent two different magnifications of the device of the invention. Referring to each circle type, in the method of the present invention, a rack 5 is placed next to a warp beam stand 26 next to a shuttle. On the right side of the warp frame 26, when the single fiber \ 〇a is to be welded to the end of a used-up reel single fiber 30 on the warp frame 26, the device 10 is used—the right supply collimation block 2 〇a. The fiber 30 is pushed into the groove 34 of the plate 32 and 30a is pushed into the groove 46 1 of the bottom plate 40 and the H-head 8 is moved into the opening 44 of the bottom plate 40. A welding 60 is completed after confirming that the V-two head has indeed been melted into the welding point a if the fiber 3. The self-opening welding point 60 'does not prevent the fiber core from passing through the shuttle Γ 4 58 0 The dimension 30a is in the direction of the arrow' a, and the direction indicated by the weaving 柊 T 疋 follows the welding point 60 through the shuttle loom, so No =, free to interfere with various parts of the shuttle loom. It is impossible to hang the collimator. When the H15 is placed on the left side of the warp beam, the collimation block 20b 'is used to avoid the free end 58 in the shuttle loom. Some tension can be required for some connections. Pulling through the shuttle loom, the knitting loom and needle drop grooves on the k 1 shuttle loom do not occur = easily the original development of the present invention is directed to weaving single-fiber weaving Ϊ °

Page 14 ~ 4 4. Experts in the Bank will admit that Honda suffered 4343 3 7 V. Description of the invention (11) The rope made of sexual materials. The invention is further illustrated by the following examples. Examples Feasibility studies have been carried out many times using ultrasonically connected end of individual ropes using manually operated release equipment. For these early tests at the textile factory, a type of inspection was submitted to Branson Ultrasonic Corporation (Branson

Ultrasonic Incorporation) rents ultrasonic welding tools. This 150 watt machine is an E1 50 type, which is powered by a TW-1 converter, with a 1 / 2-inch knurled tip and a collimating jig. Dukane produced two ultrasonic welding tools according to Goodyear specifications for the interconnection of nylon single fibers. The two welding machines are Duquesne 41 0 70 0AT 40 仟 thrusters, with a knurled tip with a 1 / 2-blade diameter welding head. Each assembly includes a stand, pillars, and an ultrasonic press on a platform that can move vertically and rotate around the pillars. Each implement is mounted at the end of a beam rack row in the center of a double beam rack, just before the first needle drop. Welding on a new warp beam holder consists of starting from the bottom of one side of a row to the top and rotating the welding press fixture at the top. , Lower the fixture to the bottom, and then continue welding from the bottom to the other side to the top. Leave the pendant on top of the strut until a new warp beam is needed. The conditions for single fiber welding are: welding time 丨 5 seconds, holding time 1 _ 0 seconds' welding pressure 30 psi (pounds per square inch) and holding pressure 40ps; ^ typical welding force obtained in the experiment is 25-30 pounds . There are two kinds of molds for real use 丨 / 2 inch diameter welding head

Page 15/4343 3 7 V. Smart instructions Π 2) Before welding, place the single woven dimension in a certain position. One clamp is used on the left side of the beam support and the other is used on the right side of the beam support. The alignment of nylon single fibers is very important, so that there is no welding hair at the front. For example, the end of the single weave is likely to catch or block at the sharp edge when the welding point is pulled through the braiding machine. on. Therefore, before welding > By pulling the single fiber under (in the mold holder) back to 1/4 inch, you can avoid the previous difficulties. The grass straight mold is split on the plane of the single fiber so as to be joined at both ends, and the fiber is released as soon as the mold is opened. It has been experimentally determined that the following welding parameters and specifications can produce good results under the conditions described here.

· Table I Duque 4 1 0 7 0 0 AT 4 0 仟, recommended setting data for individual single fiber connection, 10, 0 0 minutes Dexon round nylon single fiber power supply unit connection time, 1.5 seconds waiting Time, seconds 1.0 Power setting i 5 Switch setting operation L 1 Function 0 (Incompetent) Welding press bench P1-Welding pressure 1 psi 30 P 2-Holding pressure, psi 40 deceleration control 3 turns, Sichuan page hour hand advance trigger adjustment 1 0 (bottom)

Page 16 4 34 3 3 7

Description of JL invention ¢ 13) 10 (bottom) 15 positions above the mold (miis 0,1 revolution > Minimum setting Stop welding adjustment Mechanical stop Trigger control ^ Table II shows the welding force of a sample welding.

Table II Ultrasonic welding wiring Welding conditions are the same as above

Failure types Fibers (in combination with interface failures), welding failures (interfacial fractures), are listed in Table II, which list the steps used to make a weld.

Table III Steps for welding a single fiber to another. Wait for the output power to be set to 15 on the welding tool, the welding time to be 15 times and the time to be 1.0 seconds, and the switch to (operation). 2. Use an appropriate collimation die that fits the side of the working beam stand. Left side of the beam stand arrangement, R — Right side of the beam stand arrangement. σ. L — 3. Turn on the air pressure to the welding press and set the welding pressure to 40 psi. .PSl at 30 and 4. Place the single fiber on the edge of the fiber collimation block.

4 343 3 7 5 'Explanation of invention (14) 5. Place the single fiber on the edge 2 (shuttle loom) of the fiber collimation block and insert the stop point. 6. Pull the single fiber on the side back about 1/4 inch to align the end of the single fiber with a mark on the fiber alignment block. 7. Press the two start buttons at the same time to weld the single fiber. The rest of the process is done automatically. 8. Weld the entire row of warp beams from bottom to top. Rotate the welding tool at the top 180 ° to prepare to handle the other side of the row of warp beams. Lower the welding tool from the bottom. Although the present invention has been exemplified and described in many ways, those skilled in the art will recognize that there are many modifications and implementations of the present invention, which may not deviate from the essence of the present invention. However, the scope of the present invention is limited only by the following patent applications.

Page 18

Claims (1)

Λ 3Α 3-3- VI. The scope of Shen Jing's patents '1 A continuous operating fine m or single fiber loom: square &' for woven-thermoplastic ^ fabric, including the following steps: plastic string or The front end of the single fiber (30a) is fed into a weaving device through the weaving device, the type of Taiming, the needle drop slot, the roller and the guide needle. 3 ° a) shuttle 40% -fabric; thin or single fiber two or two string or single fiber (3Ga) to the end of the thermoplastic donor string or single fiber (30a) is welded to the second thermoplastic string or early fiber (30) the front end; and (d) continue to operate the weaving and weaving (Sichuan weaving into a fabric loom, the first-thermoplastic string or single fiber 2) ; This method includes the further steps: = wave mode: joining thermoplastic thermoplastic ropes or single ropes or single fibers (30, 30a) to fix 4 shocks, accurate gimmicks and fine joints (60) It is estimated that there is a positive end ~ The end is dazzled in the welding point [60] so that the welding point (60) is passed through the processing equipment. 『Hua Gongzheng C 5 8) Hoe 3 — A kind of equipment (1 6) connected with thermoplastic string or single fiber is erected in a clamp (丨 4) The rotating frame 4 is attached to a stand (15) according to Shen & Zhuanfang. 4 · According to the patent scope of the 3rd dream Jin-Ultrasonic welding equipment. Brother 3 The device of the worker 'Where the welding tool (16) is 5. According to the device in the scope of patent application No. 4, there is a welding head (18) and-anvil running' Jiang / Zhong shai know tool (16) with i ^ (2〇), ^ ^, ghost (20) used in combination with welding material and anvil} Pack # —right supply absolute collimation block (2 ") or one left supply collimation block Page 19 r 434337 6. Scope of patent application (20b). 6. A mold for welding strings or fiber ends, including a top plate (32, 48) and a bottom plate (40, 52), the top plate (32, 48) is adapted to be compatible with the bottom plate (40, 52) Pressing is characterized in that the top plate, 48) has a groove (34, 50) that traverses more than half the length of the plate, and the bottom plate (40, 52) has a length that traverses the bottom plate (40, 52) less than Half of the groove (46, 54) and an opening (44) at the end of the groove (46'54), and when the top plate (32, 48) is aligned with the bottom plate (40, 52) and pressed in Together to form a station ± rabbit (20), the grooves (34, 50) on the top plate (32, 48) are tied to the grooves (46, 54) on the station block (20) and the bottom plate (40'52). On the opposite end, the bottom plate grooves (34, 50) and the top plate opening grooves (46, 54) overlap with the anvil block (20) and the openings (4 4) on the bottom plate (40, 5 2) are set Can accept a welding head (18).