JP2006348420A - Method and apparatus for knotting fiber cord - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a changing-over time of fiber cords which are traveling toward a processing or treating device, such as a dipping device, to prevent waste of a material or the like from forming, and to improve productivity of processed or treated cords. <P>SOLUTION: In a method for knotting the fiber cords, front end parts of next cords 5b which are next supplied to a dipping device 1 are arranged in parallel to presently supplied cords 5a which are presently supplied to the dipping device 1 on an upper surface of the movable carriage 8 positioned over the presently supplied cords 5a. When rear end parts of the presently supplied cords 5a reach predetermined positions near an automatic knotting means 7, an accumulator 4 composed of fixed pulleys 4a and movable pulleys 4b is actuated and the rear end parts are suspended by utilizing drawing-out of the presently supplied cords 5a brought about by raising the movable pulleys 4b and then shortening courses of the presently supplied cords 5a. During that time, the front end parts and the rear end parts of the fiber cords 5 are overlapped each other, by moving the movable carriage 8 toward a downstream side, and then automatically knotted by the automatic knotting means 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a fiber cord knotting method and a fiber cord knotting device for knotting the ends of fiber cords, and in particular, the end portion of a fiber cord being moved toward a processing or processing device such as a dipping device and the following. The present invention relates to a fiber cord knotting method and a knot device that automatically knots a tip end portion of a fiber cord without stopping a processing or processing apparatus.

  Conventionally, fiber cords made of various fibers have been used in a wide range of fields as industrial products or their raw materials. For example, fiber cords for rubber reinforcement made of synthetic resin fibers such as polyester and nylon are used for pneumatic tires and conveyor belts. It is often used as a reinforcing material for rubber industrial products such as hoses and air springs. This rubber-reinforcing fiber cord is generally produced by adding a twist to a raw yarn such as a synthetic resin with a twisting machine, and then subjected to processing necessary for bonding between the fiber material and rubber (dipping treatment). Thus, a dipping cord is formed, and a rubber product or an intermediate member is manufactured by coating rubber around the dipping code.

  In this dipping treatment step, mainly an impregnation treatment for immersing the fiber cord in an adhesive solution and impregnating the adhesive in order to increase the adhesive strength with rubber, and a drying heat treatment for the drying are performed. Also, in the case of synthetic resin fiber cords, cord properties that are stretched under high temperature and high tension to improve the optimum cord that is difficult to stretch and excellent in thermal stability etc. simultaneously with these treatments Adjustment processing is performed. Conventionally, for this dipping process, a dipping apparatus capable of continuously performing the above series of processes with one apparatus is used (see Patent Document 1).

  FIG. 10 is a side view schematically showing this conventional dipping apparatus. The dipping device 50 includes a fiber cord 51 supply device 52, a dipping bath 53 for impregnating the fiber cord 51 with an adhesive liquid, a drying furnace 54 for drying the adhesive, and two heat treatments. A heat treatment furnace 55, a plurality of tension rolls 56 that apply tension to the fiber cord 51, and a winding device 57 for the dipping cord 51, and the fiber cord 51 supplied from the supply device 52 is subjected to dipping treatment (impregnation treatment, The paper is wound around the winding device 57 after being subjected to a drying process and a code property adjusting process.

  Here, since the fiber cord 51 is generally attached to the supply device 52 in a state of being wound around a roll such as a bobbin for every predetermined length, when the unwinding of the fiber cord 51 of the roll is finished, the supply device It is necessary to replace the roll 52 with a new roll, and connect the tip of the fiber cord 51 wound around the new roll to the end of the fiber cord of the previous roll and supply it to the dipping device 50.

  However, in such a conventional dipping device 50, since the knots between the end portions are manually performed, the knotting work takes time, and there is a problem that productivity of the dipping code is lowered. Further, since the knot work is performed once the dipping device 50 is stopped, the temperature of the drying furnace 54, the heat treatment furnace 55, etc. once decreases, and after the knot work is completed, the dipping device 50 is restarted to resume the process. However, it takes time for them to rise to a predetermined temperature. Therefore, the fiber cord 51 processed in the meantime may not exhibit predetermined physical properties and must be discarded. Therefore, there is a problem that a large amount of material waste is generated each time the knotting work is performed.

  Further, when a large number of fiber cords 51 are paralleled and simultaneously dipped in such a conventional dipping device 50 for the purpose of improving productivity or the like, the time required for the knot work and the dipping device according to the number of the fiber cords 51 are reduced. 50 stop time is lengthened. Therefore, the temperature drop of the heat treatment furnace 55 and the like is increased and the time for raising the temperature to a predetermined temperature is lengthened, and the above-described problems such as a decrease in productivity and a large amount of material waste are further increased.

  As one method of solving such a problem, a method of increasing the length of the fiber cord 51 wound around the roll can be considered. According to this method, since the number of knotting operations can be reduced to reduce the dipping code productivity and the amount of material waste, the above-described problems can be reduced. However, since the knot work is required for each roll, the above problem cannot be completely solved, and the roll becomes heavier as the fiber cord 51 becomes longer, so that the roll is transported, attached to the supply device 52, etc. As a result, new problems arise, such as a decrease in workability and a decrease in productivity.

  Further, as another method for solving the above problem, it is conceivable to automatically perform the knot work between the ends of the fiber cord 51 using an automatic knotting device. However, even in such a case, it is possible to improve the productivity of the dipping code by shortening the time of the knotting work, but since the dipping device 50 needs to be stopped during the knotting work, the heat treatment furnace 55 or the like can reach the predetermined temperature. The fiber cord 51 that has been processed before the temperature rises must be discarded, and the problem of waste material cannot be solved.

JP-A-10-140123

  The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to reduce the switching time of fiber cords that are moving toward a processing or processing device such as a dipping device and to generate material waste and the like. Is to improve the productivity of processing or processing code.

The invention of claim 1 is a fiber cord knotting method for knotting the leading end portion of the next fiber cord to the end portion of the fiber cord that is moving toward the processing or processing apparatus. A step of detecting that the end portion has reached a predetermined position; a step of shortening a moving path of the moving fiber cord excluding the end portion based on the detection; and stopping the end portion; and While the terminal portion of the fiber cord and / or the tip portion of the next fiber cord is moved to the knot position, and the moving fiber cord moves a distance corresponding to the shortened distance of the path, And a step of superposing the end portion of the fiber cord and the tip portion of the next fiber cord to automatically knot each other.
The invention according to claim 2 is the fiber cord knotting method according to claim 1, wherein the step of previously arranging the tip of the next fiber cord in the vicinity of the knot position, and the tip of the next fiber cord And a step of moving from the arranged position to the nodule position.
The invention of claim 3 is a fiber cord knotting device for knotting the end of the next fiber cord to the end of the fiber cord that is moving toward the processing or processing device. Detecting means for detecting that the end portion has reached a predetermined position; means for shortening a moving path of the moving fiber cord excluding the end portion based on the detection; and stopping the end portion; Means for moving the end portion of the fiber cord and / or the tip portion of the next fiber cord to the knot position, and the end portion of the moving fiber cord and the tip portion of the next fiber cord are overlapped to automatically knot And means for performing.
According to a fourth aspect of the present invention, in the fiber cord knotting device according to the third aspect, the means for shortening the moving path and stopping the terminal portion is based on the detection, and the means for stopping the terminal portion is moving. It is an accumulator that changes a path length by displacing a pulley that transports a fiber cord provided in a movement path of the fiber cord.
According to a fifth aspect of the present invention, in the fiber cord knotting device according to the fourth aspect, the accumulator includes a fixed pulley, a movable pulley, and a driving means for displacing and driving the movable pulley.
The invention of claim 6 is the fiber cord knot device according to any one of claims 3 to 5, wherein the fiber cord knot device is provided above the moving fiber cord and is movable along the fiber cord. A means for disposing the tip portion of the next fiber cord in parallel with the moving fiber cord, and a tip portion of the next fiber cord disposed on the top surface of the move table on the upper surface of the moving table. And holding / moving means that overlaps the terminal portion of the moving fiber cord.
A seventh aspect of the present invention is the fiber cord knotting device according to any one of the third to sixth aspects, wherein the processing or processing device is a dipping device for simultaneously dipping a plurality of fiber cords. And
According to an eighth aspect of the present invention, in the fiber cord knotting device according to any one of the third to seventh aspects, the automatic knotting means includes an end portion of the moving fiber cord and a leading end of the next fiber cord. It is an air splicer that automatically knits one or more parts.

  ADVANTAGE OF THE INVENTION According to this invention, the terminal part of the fiber cord currently moving toward processing or processing apparatuses, such as a dipping apparatus, and the front-end | tip part of the following fiber cord can be automatically knotted, without stopping an apparatus. Therefore, generation | occurrence | production of material waste etc. can be suppressed and productivity of a process or a process code can be improved.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a fiber cord knotting method and knotting apparatus according to the present invention will be described with reference to the drawings.
In each of the following embodiments, a dipping device that performs fiber cord dipping processing will be described as an example. However, the present invention may be applied to other types of devices that process or process fiber cords such as fabric weaving devices. Can be applied.

  Moreover, in each embodiment, the dipping which supplies the fiber cord for rubber reinforcement (henceforth a fiber cord) which consists of a plurality of synthetic resin fibers etc. in parallel, dip-processes them simultaneously, and produces a single dipping cord. The apparatus will be described as an example. Accordingly, the number of bobbins, fiber cord supply devices, dipping cord take-up devices, and the like, on which the following fiber cords are wound, are provided in the dipping device.

(First embodiment)
First, a fiber cord dipping device according to a first embodiment of the present invention will be described.
The dipping device in the present embodiment is similar to the conventional dipping device 50 shown in FIG. 10, a supply device that supplies a fiber cord, a dipping bath that contains an adhesive solution that impregnates the fiber cord with an adhesive solution, A supply device having the same configuration as a normal dipping device, such as a drying furnace for drying adhesives, a heat treatment furnace for performing various heat treatments, a plurality of tension rolls for applying tension to fiber cords, and a dipping cord winding device Are simultaneously dipped (impregnation, drying, cord physical property adjustment, etc.), and each dipping cord is wound up by a winding device.

  However, unlike the conventional dipping device 50, this dipping device supplies the fiber cord (hereinafter referred to as the supplying cord) that is moving toward the device after the end of the supply and the supplying cord is finished. The knot work at the tip of the fiber cord (hereinafter referred to as the next cord) can be performed automatically and without stopping the dipping device. Therefore, this dipping device has a supply device for supplying the next code in addition to the supply device for supplying the supply code.

  FIG. 1 is a side view schematically showing a main part of the dipping apparatus in the present embodiment, and shows an enlarged portion related to a knot work between end portions of fiber cords. FIG. 2 is a plan view of the automatic knot device of the dipping device as seen from the direction A in FIG.

  As shown in FIG. 1, the dipping device 1 includes an automatic knotting device 3 and an accumulator 4 in order between a fiber cord supply device (not shown) and a dipping bath 2 that performs an impregnation treatment with an adhesive liquid. And the accumulator 4 is actuated to stop the end portion of the feeding cord 5a and the end portion of the next cord 5b is knotted by the automatic knotting device 3. In the following description, the fiber cord 5 includes a supply cord 5a and a next cord 5b.

  The accumulator 4 is a means for stopping the terminal end of the supplying cord 5a, and a plurality of (four in this embodiment) fixed pulleys 4a for transferring the supplying cord 5a and the fixed pulleys 4a are positioned below the fixed pulleys 4a. A plurality (four in this embodiment) of movable pulleys 4b that can approach and separate from each other are provided. The feeding cord 5a is alternately stretched between the pulleys 4a and 4b so as to move in a zigzag manner in the vertical direction. For example, the movable pulley 4b is displaced by a driving means (not shown) to drive the fixed pulley 4a. , The path of the supplying cord 5a that is alternately routed between the pulleys 4a and 4b is shortened, and the automatic connecting device 3 side of the supplying cord 5a in the meantime (hereinafter, the direction is referred to as the downstream side). ) Is stopped, the supplying cord 5a can be fed out to the dipping bus 2 side (hereinafter, the direction is referred to as the upstream side).

  The movable pulley 4b may be, for example, a moving pulley on which the supply cord 5a is suspended, and may be moved up and down by a driving unit (not shown) so that the speed on the downstream side of the supply cord 5a can be controlled. In the case of actuating by the driving means, the fixed pulley 4a and the movable pulley 4b may be opposite to the present embodiment, that is, the upper pulley may be the movable pulley 4b and the lower pulley may be the fixed pulley 4a. All the pulleys of the accumulator 4 may be movable pulleys 4b, or the pulleys 4a and 4b may be arranged in the lateral direction so that the feeding cord 5a moves in a zigzag manner in the lateral direction. Furthermore, the number of pulleys 4a and 4b and the vertical separation distance can be changed so that the stop time on the downstream side of the supplying cord 5a can be adjusted according to the supply speed and number of the fiber cords 5 and the like. Good.

  The automatic knotting device 3 includes a fixing base 6 having an opening 6a provided below the feeding cord 5a and an automatic knotting means 7 for automatically knotting the ends of the fiber cords 5 provided in the opening 6a. And a movable table 8 on which the tip of the next cord 5b is placed on the upper surface until it is knotted, a plurality of pulleys 9 on which the fiber cord 5 is stretched, and the next cord 5b are aligned on the upper surface of the movable table 8 in parallel. Arranging means (not shown) for arranging, and holding / moving means (not shown) for holding the tip of the next cord 5b and moving it downward.

  As shown in FIGS. 1 and 2, the upper plate of the fixing base 6 is formed in a plane parallel to the feeding cord 5a whose upper surface is parallel, and does not contact with the feeding cord 5a with a certain distance therebetween. It is provided as follows. Further, an opening 6a in a direction perpendicular to the extending direction of the supplying cord 5a is formed on the upper plate.

  The automatic knotting means 7 moves along an opening 6a of the fixing base 6 as shown in FIG. It is provided to be movable. The automatic knotting means 7 has a known knotting means such as an air splicer on the upper surface, and automatically knots the ends of each fiber cord 5 one by one or several while moving the opening 6a. It has become. The air splicer passes the terminal end of the supply cord 5a and the tip of the next cord 5b through one hole and blows pressure gas from a nozzle or the like provided on the side of the hole, and the fiber In this device, the ends of the cords 5 are once loosened, the yarns of the fiber cords 5 are entangled, and the ends are knotted together.

  The movable table 8 has a substantially rectangular flat plate shape, and is provided between the supplying cord 5a and the tip of the next cord 5b so as to be parallel to and not in contact with the supplying cord 5a. The movable table 8 is movable in parallel with the extending direction of the feeding cord 5a, for example, by attaching a plurality of wheels on the lower surface, and as shown in FIG. 1, the opening 6a of the fixed table 6 is provided. When the fiber cords 5 are knotted together from a fixed position covering the cable, the fiber cords 5 are moved by a driving means (not shown) to a predetermined position for opening the opening 6a toward the downstream side of the supplying cord 5a. .

  Further, the top end of the next cord 5b arranged on the upper surface is prevented from moving by providing an anti-slip member such as a rubber sheet having a large frictional force on the upper surface of the moving table 8, for example. The position of the tip end portion of the next cord 5b arranged in parallel with and in parallel with the feeding cord 5a can be maintained by the arranging means.

  The arrangement means for the next cord 5b has means for gripping the tip of the next cord 5b and means for pulling the tip of the next cord 5b to the upstream side in parallel with the feeding cord 5a in that state, The tips of 5b may be grasped one by one and pulled out upstream to be arranged in parallel, or plural or all of the next cords 5b may be grasped simultaneously and drawn upstream to be arranged in parallel. May be.

  The means for holding / moving the tip of the next cord 5b (not shown) includes a means for grasping and holding the tip of each next cord 5b on the upper surface of the moving table 8, and the next code 5b after the moving table 8 has moved to the predetermined position on the downstream side. And moving means for moving the tip of each of the feeding cords 5a downward to overlap each of the feeding cords 5a.

  The holding / moving means may also be held and moved by gripping one end of each of the next cords 5b one by one, similarly to the above-described arrangement means, or a plurality of or all of the ends of the next cords 5b. May be held and moved at the same time. In order to prevent the next cord 5b from being cut by being pulled by frictional force when the moving table 8 moves downstream, or to shift its position, etc., after gripping the tip of the next cord 5b, The top end of the next cord 5b may be moved away from the upper surface of the moving table 8 by moving upward. Furthermore, the arrangement means may be movable downward to have the function of holding / moving means.

  Further, the dipping device 1 in the present embodiment includes a control device 10 that controls the accumulator 4, the automatic knotting means 7, the moving table 8, and the like. FIG. 3 is a block diagram of the control device 10. The control device 10 includes a control unit such as a central processing unit (CPU) that performs various data processing, a storage unit such as a RAM and a ROM that records applications and data, an interface for connection with an external device, and the like As shown in the figure, a detecting means S composed of various sensors and the like, an accumulator 4, an automatic knotting means 7, a movable table 8, and the like are connected.

  The control device 10 detects the position of the fiber cord 5 by the detection means S, and performs various controls such as operating the drive means of the accumulator 4 and the movable table 8 based on the result. For example, when it is detected that the end portion of the supply cord 5a has reached a predetermined position, the driving unit of the moving table 8 is operated to move the moving table 8, or the arrangement unit and the holding / moving unit are moved. Operates and moves the tip of the next cord 5b. Also, the driving means of the accumulator 4 is controlled to drive the movable pulley 4b, and the terminal portion is stopped by setting the shortening distance of the path of the supplying cord 5a to be equal to or longer than the moving distance. In addition, the supply of the fiber cord 5 and the control of the winding speed may be performed.

  Next, the procedure for knotting the ends of the fiber cord 5 using the dipping device 1 having the above configuration will be described with reference to FIGS. The following procedure is executed by the control device 10 to which various detection means S are connected.

  First, as shown in FIG. 1, during the supply (moving) of a plurality (14 in the figure) of the supply cords 5a, the arrangement means (not shown) is arranged with the same number of leading ends of the next cords 5b. Thus, they are arranged in parallel on the upper surface of the movable table 8 so as to be aligned in parallel with each of the feeding cords 5a. This procedure may be performed at an appropriate time before starting the following procedure.

  In this state, the supply of the supply code 5a is continued. When the supply code 5a is near the end, for example, when the detection means S detects this, the holding / moving means (not shown) causes the next code 5b. Grab and hold each tip. Next, when the end of the supplying cord 5a reaches a predetermined position near the opening 6a of the fixed base 6, when the detecting means S detects this, the accumulator 4 is activated, and the moving speed of the supplying cord 5a is increased. At the same time, the movable pulley 4b is raised to shorten the path of the supplying cord 5a, and the end portion thereof is stopped.

  Next, the moving base 8 is moved to the predetermined position on the downstream side by a driving means (not shown), and the tip of the next cord 5b is moved downward by a holding / moving means (not shown), as shown in FIG. In this way, it is overlapped with the end portion of each supply cord 5a. In this state, the automatic knotting means 7 is moved in the direction indicated by the arrow in FIG. 2, and the ends where the fiber cords 5 are overlapped are sequentially knotted one by one or several.

  After the knots at the ends of all the fiber cords 5 are finished, the end of the feeding cord 5a is released by stopping the rise of the movable pulley 4b of the accumulator 4, and the next knotted cord 5b is supplied. Continue the dipping process. The position of the movable pulley 4b of the accumulator 4 is returned to the original position before the operation by adjusting the supply speed of the fiber cord 5, the winding speed of the dipping cord, and the like.

  When the fiber cord 5 is automatically knotted at the time of the next knot, the next cord 5b is removed from the pulley 9 and moved to the position of the feeding cord 5a near the upper surface of the fixed table 6, and the movable table 8 is moved upstream. After returning to a fixed position covering the opening 6a, the above procedure is repeated to perform automatic knotting.

  As described above, in the present embodiment, by operating the accumulator 4 and moving the movable pulley 4b, the feeding cord 5a corresponding to the shortened path is fed out, and during that time, the feeding cord 5a The terminal part can be stopped. Therefore, it is possible to stop the end portion of the supplying cord 5a without stopping the dipping device 1 and automatically knot the tip portion of the next cord 5b in the meantime. Accordingly, it is possible to reduce material waste generated by temporarily stopping the dipping apparatus 1, and to improve the productivity of the dipping code.

  The present invention is also applicable to other dipping devices that dip fiber cords, such as when dipping fiber cords one by one or when manufacturing a dipping cord sheet in which a large number of fiber cords are arranged in parallel. can do. In addition, the knots between the ends of the fiber cord 5 need to be performed while the accumulator 4 is operated to stop the end of the feeding cord 5a. Depending on the stop time, the automatic knotting means 7 may be used. Multiple units may be provided to shorten the knot time. Further, the end portion of the cord 5a being supplied can be moved, the end portion can be moved upward and overlapped with the next cord 5b to be knotted, and both the fiber cords 5a and 5b can be moved together. Also good.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
This embodiment is another embodiment of the means described in the first embodiment, in which the fiber cords 5 are arranged at predetermined positions until the ends of the automatic knotting device 3 of FIG. 1 are knotted. Yes, unlike the first embodiment, the distal end portion of the next cord 5b is arranged and held at a predetermined position without providing the moving table 8 or the like between the fiber cords 5.

  4 is an enlarged perspective view showing the vicinity of the tip of the next cord 5b, and FIG. 5 is a plan view of FIG. 4 as viewed from above. These are the vicinity of the upper portion of the automatic knotting means 7 (FIG. 1). Reference). The dipping device 1 of the present embodiment is configured in the same manner as the dipping device 1 described in the first embodiment except for the portions shown in FIGS. 4 and 5, the supply code 5a is indicated by a broken line, and the next code 5b is indicated by a solid line.

  As shown in FIG. 4, the automatic knotting device 3 of the present embodiment has a plurality (four in the figure) of array members 11 that array the fiber cords 5 at predetermined positions so that the positions do not fluctuate. And an end holding member 12 for holding the tip of the next cord 5b, and the supply path and position of the fiber cord 5 are determined by these members 11 and 12, so that the fiber cords 5 are not entangled with each other. ing.

  The array member 11 has a horizontally long, substantially rectangular flat plate shape, and includes a plurality of circular holes 11a having a diameter larger than that of the fiber cord 5 at regular intervals along the center line in the longitudinal direction (lateral direction) (FIG. 4). 10). The array members 11 are provided in parallel in the vertical direction at two locations in the middle of the path of the cords 5a and 5b so that the longitudinal direction is perpendicular to the flow direction of the fiber cord 5. Each cord 5a, 5b is supplied to the next process through a predetermined hole 11a corresponding to each of the cords 5a, 5b, so that they are arranged in parallel to each other and parallel to each other, and the positions thereof maintain the predetermined positions. ing. Therefore, each hole 11a is formed in an appropriate size so as not to be too small so that the fiber cord 5 passes smoothly and not too large so that the position of the fiber cord 5 does not vary greatly.

  The end holding member 12 is composed of two horizontally long substantially rectangular flat plates or the like, which are provided in parallel so as to face each other in the vertical direction, and are connected by screws or the like so that the interval can be changed. The end holding member 12 is provided at a position for fixing the tip of the next cord 5b so that the longitudinal direction is perpendicular to the extending direction of the next cord 5b and the gap between the flat plates faces the horizontal direction. The leading end of the next cord 5b is sandwiched and fixed by a gap or the like.

  In the present embodiment, as shown in FIG. 4, each of the next cords 5b of the same number is supplied while the plurality of cords 5a are being fed through the predetermined holes 11a of the arrangement member 11 (moving). The tip portion is arranged and held at a predetermined position by the members 11 and 12. At this time, as shown in FIG. 4, the next cords 5b are arranged in parallel at predetermined intervals above the feeding cord 5a to be knotted.

  Further, as shown in FIG. 5, when viewed from above, the supply cord 5a and the next cord 5b to be knotted with each other are arranged so that the interval between them is a predetermined interval according to the structure of the automatic knotting means 7 and the like. . Therefore, the center of the hole 11a of the array member 11 (two on the lower side in FIG. 4) through which the cord 5a is being supplied and the array member 11 (two on the upper side in FIG. 4) through which the next cord 5b to be knotted is passed. The array members 11 are arranged such that the center interval of the holes 11a is the predetermined interval between the fiber cords 5 described above.

  The arrangement and holding of the next code 5b may be performed manually, but may be automatically performed by an arrangement unit (not shown) as in the first embodiment.

  The procedure after arranging and holding the tip of the next cord 5b as described above is the same as the procedure of automatic knotting described in the first embodiment, and the accumulator 4 is operated to terminate the supplying cord 5a. The ends of the fiber cords 5 are automatically knotted in order by the automatic knotting means 7 in the meantime. Therefore, also in this embodiment, since the ends of the fiber cords 5 can be automatically knotted without stopping the dipping device 1, material waste generated by temporarily stopping the dipping device 1 is reduced. It is possible to improve the productivity of the dipping code.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
This embodiment is another embodiment of the automatic knotting means 7 of the automatic knotting device 3 (see FIG. 1) described in the first embodiment, and is different from the automatic knotting means 7 of the first embodiment. The automatic knotting means 7 is provided with a means for moving and guiding the position of the fiber cord 5 so that the fiber cords 5 can be automatically knotted together.

  FIG. 6 is a schematic diagram of the automatic knotting means 7 of the present embodiment, FIG. 6 (a) shows a side view, and FIG. 6 (b) shows a top view. FIG. 6 shows a state in which a pair of fiber cords 5 are knotted.

  As shown in the figure, the automatic knotting means 7 of the present embodiment includes a main body 7a, knotting means 7b provided on the upper surface of the main body 7a, a cord insertion portion 7c, and both side surfaces orthogonal to the fiber cord 5 of the main body 7a ( A pair of cord removing members 7d rotatably attached to the upper and lower surfaces in FIG. 6B and a cord guide protruding from below one side surface (the left surface in FIG. 6) parallel to the fiber cord 5. Arm 7e (hereinafter, the protruding direction of the arm 7e is referred to as the front).

  The main body 7a has a box shape as a whole, and moves the automatic knotting means 7 in a direction orthogonal to the fiber cord 5, for example, a moving means consisting of a wheel, a motor or the like, or a rotation driving means for rotating the cord removing member 7d. Etc. are provided.

  The knotting means 7b is provided substantially at the center of the upper surface of the main body 7a, has a concave groove in the center along the fiber cord 5, puts a pair of fiber cords 5 there, overlaps them, and knots them It has become. The knotting means 7b is a known knotting means such as the air splicer described above.

  As shown in FIG. 6 (a), the cord insertion portion 7c is made of a member having a triangular cross-section projecting upward, and a pair of two opposing members form a pair of cords being supplied 5a or The next cord 5b is inserted, and each fiber cord 5 is arranged at a predetermined position on the upper surface of the main body 7a. Accordingly, the cord insertion portion 7c is formed so that the distance between the pair of members becomes wider upward so that the fiber cord 5 can easily enter. Moreover, as shown in FIG.6 (b), the cord insertion part 7c is each provided in two places along each fiber cord 5, When each fiber cord 5 is inserted in them, the position will be In addition to being fixed, both the supply cord 5a and the next cord 5b enter the concave groove of the knotting means 7b and overlap each other.

  As shown in FIG. 6A, the cord removing member 7d has a substantially T-shape whose upper side is smoothly curved downward, a linearly extending support rod, and a curved rod fixed to one end thereof. And is configured to rotate in a rotation direction R indicated by an arrow in the figure around the other end side of the support rod. This support rod is fixed so that the curved rod is on the upper end side, the front side in the rotation direction R is long and the rear side is short, and the lower end side is fixed to a rotating shaft 7f provided at the approximate center below the side surface of the main body 7a. And provided symmetrically on both parallel side surfaces of the main body 7a. The cord removing members 7d on both sides rotate around the rotation shaft 7f in the direction of the arrow, that is, in the clockwise direction R, and move the knotted fiber cord 5 upward and in the rotation direction R along the outer peripheral surface of the curved rod. And removed from the groove of the knotting means 7b and the cord insertion part 7c.

  Therefore, as shown in FIG. 6 (a), when the tip 7 (1) d in the rotation direction R is positioned above the rotation shaft 7f, the curved surface of the curved fold is lower than the upper surface of the main body 7a. And when the fixing portion with the support rod is located above the rotation shaft 7f, the whole is curved upward so that the outer peripheral surface is higher than the cord insertion portion 7c and the knotting means 7b. It is formed in a nearly crescent shape.

  As shown in FIG. 6 (b), the code guide arm 7e protrudes oppositely toward the front (left side in the figure) from two places inside the cord insertion portion 7c below the side surface of the main body 7a. A flat member 7 (1) e is fixed between the projecting ends. As shown in FIG. 6 (a), the side shape is such that a protruding portion 7 (2) e linearly protrudes forward (leftward in the figure) from the main body 7a and the upper surface of the main body 7a from the protruding end. Is formed of a curved portion 7 (3) e that smoothly curves and extends upward from a cord insertion portion 7c provided on the top.

  When the automatic knotting means 7 moves forward, the fiber cord 5 is lifted upward along the outer peripheral surface of the curved portion 7 (3) e of the cord guide arm 7e, moved and guided to above the main body 7a, and detached therefrom. When it moves downward, it enters into the groove of the knotting means 7b and the corresponding cord insertion part 7c.

  Next, a procedure for knotting the ends of the fiber cord 5 by the automatic knotting means 7 will be described. The following procedure is executed by the control device 10 shown in FIG. 3 as in the first embodiment.

  FIG. 7 is a side view showing a state in which the ends of the fiber cords 5 are knotted by the automatic knotting means 7, and FIG. 8 is a plan view of FIG. 7 viewed from above. As shown in FIG. 7, the automatic knotting means 7 of the present embodiment moves the fiber while moving in the direction of arrow F on the upper surface of a substantially rectangular guide table 13 provided in a direction orthogonal to the extending direction of the fiber cord 5. Knot the code 5. Accordingly, the automatic knotting means 7 and the guide table 13 of this embodiment are provided in the opening 6a of the fixed table 6 shown in FIGS. 1 and 2, and the following procedure is executed.

  In addition, as shown in FIG. 8, the guide stand 13 is formed in a width narrower than the interval so as not to prevent the rotation of the cord removing member 7d, and a predetermined position below the fiber cord 5 (of the cord guide arm 7e). The tip is placed at a position where the tip is inserted under the feeding cord 5a, and the knotting means 7b and the cord insertion portion 7c are located above the next cord 5b. In addition, the procedure other than the nodule is the same as the procedure described in the first embodiment or the second embodiment described above, and therefore only different parts will be described in detail in the following description.

  First, the automatic knotting means 7 is put on standby at a predetermined position on the side of the fiber cord 5 (a position where the cord guide arm 7e does not touch the fiber cord 5). Next, as described in the first embodiment or the second embodiment, during the supply (moving) of the plurality of supply cords 5a, the tip portions of the same number of the next cords 5b are shown in FIG. As shown in FIG. 7, it is arranged and held at a predetermined position above the supply cord 5a. At this time, as shown in FIG. 8, it is arranged so that the interval between the supply cord 5a and the next cord 5b to be knotted with each other is the same as the interval between the cord insertion portions 7c of the automatic knotting means 7 as viewed from above. To do.

  Next, as described in the first embodiment, when the terminal portion of the supplying cord 5a reaches a predetermined position, the accumulator 4 is operated to stop the terminal portion of the supplying cord 5a.

  In the following procedure, in the case of the automatic knotting device 3 (see FIG. 1) of the first embodiment, the moving cord 8 is moved to a predetermined position on the downstream side while holding the tip of the next cord 5b. (In the case of the automatic knotting device 3 (see FIG. 4) of the second embodiment, the tip of the next cord 5b is not moved downward by the holding / moving means). Is performed in a state of being fixed and held by the end holding member 12. Accordingly, the next cord 5b remains at the original position arranged at a predetermined interval above the feeding cord 5a, and the tip portion is fixed and held. There is tension. At the same time, the supplying cord 5a is also in a state where a constant tension is applied, for example, by fixing its rear end.

  In this state, the automatic knotting means 7 is advanced (in the direction of arrow F in FIG. 7), and the fiber cords 5 are knotted in order from the front while the terminal portion of the feeding cord 5a is stopped. Specifically, when the automatic knotting means 7 moves forward, as shown in FIG. 7, the fiber cords 5a and 5b in front of the automatic knotting means 7 are lifted upward along the outer peripheral surface of the curved portion of the cord guide arm 7e. It is done. At this time, since the fiber cord 5 is under tension, even if the automatic knotting means 7 moves forward, it is difficult to move in the forward direction, and the horizontal position is almost the same, and it is lifted mainly upward. .

  When the automatic knotting means 7 continues to advance further, the first pair of fiber cords 5a and 5b to be knotted moves out of the curved portion of the cord guide arm 7e and moves downward to return to the original position by tension, As shown in FIG. 7, the cord insertion portions 7c respectively corresponding to the concave grooves of the knotting means 7b are entered. When this is detected by, for example, the detection means S (see FIG. 3), the automatic knotting means 7 stops moving forward, and the knotting means 7b is operated to knot the ends of the overlapped fiber cords 5 together.

  Next, the cord removing member 7d is rotated once, and the fiber cord (hereinafter referred to as a knotted cord) 5c having been knotted is removed from the cord insertion portion 7c and the automatic knotting means 7 is separated from the fiber cord 5 by a distance. Next, the pair of fiber cords 5a and 5b to be knotted is removed from the curved portion of the cord guide arm 7e, and they are inserted into each cord insertion portion 7c and the like. In the same manner, the ends of the fiber cords 5 are knotted, removed, and advanced in a similar manner, and the ends of the fiber cords 5 are paired one by one. . Since the knotted cord 5c is under tension, as shown in the right end of FIG. 7, the knotted cord 5c drops to the same height as the original after it is removed rearward from the upper surface of the main body 7a.

  The subsequent procedure is the same as the procedure described in the first embodiment. The operation of the accumulator 4 is stopped, the stop of the end of the supplying cord 5a is released, and the next cord 5b that is knotted is supplied and dipped. continue processing.

  As described above, also in this embodiment, since the ends of the fiber cords 5 can be automatically knotted without stopping the dipping device 1, the material generated by temporarily stopping the dipping device 1. Waste can be reduced, and dipping code productivity can be improved.

  In this embodiment, the fiber cord 5 is knotted by one automatic knotting means 7, but two guide stands 13 are arranged in parallel horizontally, and automatic knotting means 7 opposite to each other are provided on their upper surfaces. A plurality of automatic knotting means 7 may be provided in the dipping device 1 according to the number of the fiber cords 5 such as knotting the fiber cords 5 from both sides and the stoppable time of the rear end of the feeding cord 5a. Further, the moving means of the automatic knotting means 7 may be provided outside the inside of the main body 7 a such as the guide stand 13.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.
This embodiment is another embodiment of the automatic knotting means 7 of the automatic knotting device 3 (see FIG. 1), as in the third embodiment.
FIG. 9 is a side view showing a state in which the ends of the fiber cords 5 are knotted together by the automatic knotting means 7 of the present embodiment.

  As shown in the figure, the automatic knotting means 7 of the present embodiment includes a main body 7a, knotting means 7b provided on the upper surface of the main body 7a, a cord insertion portion 7c, and a rod 14 provided above them. . The main body 7a, the knotting means 7b, and the cord insertion portion 7c have the same shape and function as the automatic knotting means 7 (see FIG. 6) described in the third embodiment. The moving means etc. which move 7 to the direction orthogonal to the fiber cord 5 are provided.

  The rod 14 has a Y-shape that is upside down and is pushed down with the fiber cord 5 sandwiched between the lower end portions thereof, and each fiber cord 5 is inserted into the corresponding cord insertion portion 7c. Accordingly, as shown in FIG. 9, when viewed from the side, the rods 14 arranged side by side have the same interval as the horizontal interval between the supply cord 5a and the next cord 5b to be knotted, and the cord is inserted. It is provided above the part 7c. In addition, the rods 14 are provided in two rows along the extending direction of the fiber cords 5 with an interval wider than the interval between the cord insertion portions 7c in the same direction.

  Each rod 14 moves up and down simultaneously in conjunction with a driving means (not shown), and simultaneously moves in the same direction in conjunction with movement of the automatic knotting means 7, so that the relative position in the horizontal direction does not change. . As the driving means for moving the rod 14 up and down, for example, a piston / cylinder mechanism can be used. In this case, the upper end of the rod 14 is fixed to the lower end of the piston rod so that the rod 14 can move up and down. To do. Further, the lower end of the rod 14 becomes higher than the next cord 5b when moved to the uppermost position (see FIG. 9A), and the fiber cord 5 enters the cord insertion portion 7c when moved to the lowermost position. (Refer to FIG. 9B), the vertical stroke is adjusted.

  When the fiber cords 5 are knotted together by the automatic knotting means 7, as shown in FIG. 9, the automatic knotting device 7 is provided on the upper surface with a guide base 13 for guiding the movement thereof. There is a need. The guide 13 is formed in the opening 6a (see FIG. 1) of the fixed base 6 in a direction perpendicular to the extending direction of the fiber cord 5 and between the knotting means 7b on the upper surface of the automatic knotting means 7 and the cord insertion part 7c. It is installed so that the position is lower than the fiber cord 5.

  Next, a procedure for knotting the ends of the fiber cord 5 by the automatic knotting means 7 will be described. The following procedure is executed by the control device 10 shown in FIG. 3 as in the first embodiment.

  Since the procedure other than the nodule is the same as the procedure described in the third embodiment, in this embodiment, the procedure after the accumulator 4 is activated and the terminal end of the supplying cord 5a is stopped. Only will be described. Also in this embodiment, the following knot work is performed in a state where a constant tension is applied to the supply cord 5a and the next cord 5b.

  First, as shown in FIG. 9A, with each rod 14 raised, the automatic knotting means 7 is advanced in the direction of arrow F, and the first pair of fiber cords 5a and 5b to be knotted are inserted into the cord. When positioned between the portion 7c and the rod 14, the automatic knotting means 7 is stopped. Next, the rod 14 is lowered, and as shown in FIG. 9B, the fiber cord 5 is inserted into the concave groove of the knotting means 7b and the corresponding cord insertion portion 7c, and the knotting means 7b is operated. The ends of the superimposed fiber cords 5 are knotted together.

  Next, as shown in FIG. 9A, each rod 14 is raised. At this time, since tension is applied to the fiber cord 5, a force is exerted to move upward, which is the original position, and as the rod 14 is raised, the fiber cord 5 is also raised and the cord insertion portion 7 c and the like Get away from. After raising the rod 14 to the uppermost position, the automatic knotting means 7 is advanced by the distance between the fiber cords 5. Similarly, the rod 14 is lowered and knotted, the rod 14 is raised and moved forward repeatedly, and the ends of the fiber cord 5 are knotted one by one.

  After the knots of all the fiber cords 5 are finished, the fixing and holding of the end portions of the fiber cords 5 are released, and the operation of the accumulator 4 is stopped and supplied in the same manner as the procedure described in the third embodiment. The stop at the end of the cord 5a is released, the next cord 5b that is knotted is supplied, and the dipping process is continued.

  As described above, also in this embodiment, since the ends of the fiber cords 5 can be automatically knotted without stopping the dipping device 1, the material generated by temporarily stopping the dipping device 1. Waste can be reduced, and dipping code productivity can be improved.

  In this embodiment as well, as in the third embodiment, a plurality of automatic knotting means 7 are connected to the dipping device 1 in accordance with the number of fiber cords 5 and the stopping time of the rear end portion of the feeding cord 5a. It may be provided. Further, the moving means of the automatic knotting means 7 may be provided outside the main body 7a such as the guide stand 13 or the like.

(Dipping test)
In order to confirm the effect of the present invention, a comparison test between a dipping process (hereinafter referred to as an example) in which ends of fiber cords 5 are automatically knotted and a dipping process (hereinafter referred to as a comparative example) knotted by a conventional method is performed. went. In the examples, the ends of the fiber cords 5 are automatically knotted without operating the accumulator 4 and stopping the dipping device 1 by the apparatus and method described in the first embodiment. The comparative example is dipping The apparatus 1 was stopped and the knot work was performed manually one by one. The tests of the example and the comparative example are all under the same conditions except for the knot work.

  In this test, a dipping apparatus having a dipping bath, a drying furnace, a high temperature heat treatment furnace, etc., and producing a single dipping code by simultaneously dipping 100 pieces, a polyethylene terephthalate (PET) cord (thickness 1670 dtex / 2) was used. The test was conducted by attaching 100 twists of 39 twists / 10 cm and a winding length of 15000 m) for both the lower twist and the upper twist. The dipping processing speed is 100 m / min.

  The test was conducted under the above conditions, and the test results were evaluated based on the switching time and the material scrap rate. Here, the switching time is the time taken for the knots at the end of all the PET cords, the temperature of each furnace is restarted after the dipping device is stopped, and the dipping processing conditions such as tension and temperature are This is the total time taken to reach the predetermined condition. The shorter the time, the better the result. Therefore, in the embodiment, since the nodule is performed without stopping the dipping device, the switching time is only the time taken for the nodule. The material scrap rate is the length of material scrap (the total length of the length of the knot portion and the length of the portion that has not been dipped under a predetermined condition), and the length of the PET cord before the dipping process. The value divided by (percentage display) indicates that the smaller the value, the less material waste. The test results are shown in Table 1.

  As shown in Table 1, the switching time of the example is as short as 30 seconds as compared with 60 minutes of the comparative example, and the material waste rate of the example is 0 compared with 6% of the comparative example. It was proved that the fiber cord switching time can be greatly reduced and the amount of material waste can be greatly reduced by the present invention.

It is a side view which shows roughly the principal part of the dipping apparatus in 1st Embodiment. It is the top view which looked at the automatic knotting apparatus of the dipping apparatus in 1st Embodiment from the A direction of FIG. It is a block diagram of the control apparatus with which the dipping apparatus in 1st Embodiment is provided. It is an expansion perspective view near the front-end | tip part of the next cord of 2nd Embodiment. FIG. 5 is a plan view of FIG. 4 viewed from above. It is the schematic of the automatic knotting means of 3rd Embodiment, (a) is a side view, (b) is a top view. It is a side view showing the state where the ends of the fiber cord are knotted together by the automatic knotting means of the third embodiment. FIG. 8 is a plan view of FIG. 7 viewed from above. It is a side view which shows the state which joins the edge parts of a fiber cord by the automatic knotting means of 4th Embodiment. It is a side view which shows the conventional dipping apparatus schematically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dipping device, 2 ... Dipping bath, 3 ... Automatic knotting device, 4 ... Accumulator, 4a ... Fixed pulley, 4b ... Movable pulley, 5 ... Fiber cord, 5a ... Supplying code, 5b ... Next code, 5c ... Knotted cord, 6 ... Fixing base, 6a ... Opening, 7 ... Automatic knotting means, 7a ... Main body, 7b: knotting means, 7c: cord insertion portion, 7d: cord removing member, 7e: cord guide arm, 7f: rotating shaft, 8: moving table, 9 ... pulley DESCRIPTION OF SYMBOLS 10 ... Control apparatus, 11 ... Arrangement member, 11a ... Hole, 12 ... End part holding member, 13 ... Guide stand, 14 ... Rod.

Claims (8)

A fiber cord knotting method for knotting the end of the next fiber cord to the end of the fiber cord that is moving toward the processing or processing device,
Detecting that the end of the moving fiber cord has reached a predetermined position;
A step of shortening the moving path of the moving fiber cord excluding the end portion based on the detection and stopping the end portion;
Moving the end of the moving fiber cord and / or the tip of the next fiber cord to a knot position;
While the moving fiber cord moves a distance corresponding to the shortened distance of the path, the step of automatically knotting by overlapping the end portion of the moving fiber cord and the tip portion of the next fiber cord;
A method for knotting a fiber cord, comprising: The method for knotting a fiber cord according to claim 1,
The step of arranging the tip of the next fiber cord in the vicinity of the knot position in advance,
Moving the tip of the next fiber cord from the disposed position to the knot position;
A method for knotting a fiber cord, comprising: A fiber cord knotting device for knotting the end of the next fiber cord to the end of the fiber cord that is moving toward the processing or processing device,
Detecting means for detecting that the end of the moving fiber cord has reached a predetermined position;
Means for shortening the moving path of the moving fiber cord excluding the end portion based on the detection and stopping the end portion;
Means for moving the end of the moving fiber cord and / or the tip of the next fiber cord to a knot position;
Means for automatically knotting by overlapping the end portion of the moving fiber cord and the end portion of the next fiber cord;
A fiber cord knotting device characterized by comprising: In the fiber cord knotting device according to claim 3,
The means for shortening the moving path and stopping the terminal portion displaces a pulley for transferring a fiber cord provided in the moving path of the moving fiber cord excluding the terminal portion based on the detection. A fiber cord knotting device characterized by being an accumulator that changes length. In the knotting device of the fiber cord according to claim 4,
The accumulator includes a fixed pulley, a movable pulley, and drive means for driving the movable pulley to displace the fiber cord knotting device. The knotting device for fiber cords according to any one of claims 3 to 5,
A movable table provided above the moving fiber cord and movable along the fiber cord;
Means for disposing a tip portion of the next fiber cord in parallel with the moving fiber cord on the upper surface of the moving table;
Holding / moving means for holding and moving the lower end portion of the next fiber cord disposed on the upper surface of the moving table and superimposing the end portion of the moving fiber cord;
A fiber cord knotting device characterized by comprising: The knotting device for fiber cords according to any one of claims 3 to 6,
The knotting device for fiber cords, wherein the processing or processing device is a dipping device for simultaneously dipping a plurality of fiber cords. The knotting device for fiber cords according to any one of claims 3 to 7,
The fiber cord knotting device, wherein the automatic knotting means is an air splicer that automatically knots one end or a plurality of end portions of the moving fiber cord and the tip end portion of the next fiber cord.

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