JPH0515838B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to apparatus used for forming seams in woven belts, particularly elongated belts of the type used in the hood linear sections of paper machines in the paper industry. The present invention relates to an apparatus used to form a weave seam in a woven belt.

Background of the Prior Art Machines used in paper mills use large woven belts, typically over 150 feet long and 200 inches wide. This type of belt is woven on large looms and then the ends of the belt are woven together in a tedious process to form a seamless belt. During the papermaking process, there should be no damage to the weave seams. To date, the process of forming woven seams has been primarily carried out by hand by unraveling the filaments at each end of the woven belt and then weaving the filaments into the other end of the belt. Because these woven belts are tightly woven from very fine filaments or threads, the manual seam weaving process is precise and time consuming. Although it is difficult for a seam loom to grasp the individual filaments in correct sequence, it is absolutely necessary for the seam loom to produce a complete continuous woven product. If the filaments are not interwoven in the correct order, the cloth is worthless. Great care must be taken in seam looms to ensure that the weaving filaments are never twisted and that each knuckle of the seam filament is in the correct position with the other threads of the fabric.

Particular attention must be paid to the seam weaving process, so that in the case of wide belts manual seam weaving requires considerable working time. Because of the time it takes and the level of skill required, the seam weaving process is expensive, and this expense accounts for a large portion of the product cost.

Because of the expense of this manual seam weaving process, efforts have been made to automate the process of making woven seams and endless woven belts. Until the present invention, such efforts have been unsuccessful.

One prior art device has been developed that combines manual seam formation and shed opening formation. Although this device was intended to reduce some of the effort exerted by the seam weaver, manual weaving was still necessary. This equipment was manufactured by Samuel Dracup & Sons, Ltd.
LaneClose Mills Great Horton, Bradtord
We use Jaccard tools of the type manufactured in West Yoxkshire, England.

Other examples of the prior art attempt to provide mechanical methods for forming weave seams, as described in German Koller et al., patent discloswre p3025909.7-26, February 4, 1982. Are listed. Although this structure or device is intended to provide an automatic seam weaving machine, it suffers from a number of various drawbacks. For example, Koller's method of separating warp threads one by one is not functional, nor is Koller's method suitable on a commercial basis for threading the warp threads through the weft threads to form a weave seam.

SUMMARY OF THE INVENTION The present invention provides an apparatus for forming a weave seam interconnecting the edges of a cloth-like fabric used in a hood linear section of a paper machine. The apparatus according to the invention provides a means for mechanically forming seams and significantly reduces the amount of manual labor that would otherwise be required for seam forming operations.

That is, the apparatus according to the present invention is an apparatus for forming a weave seam in order to form an endless woven fabric belt by joining both ends of a long woven fabric by the weave seam, and the apparatus forms the weave seam in a mutually parallel positional relationship. (in the examples described below, designated by reference number 28)
and means for supporting a strip 16 consisting of weft yarns and supporting both ends of the woven fabric close to and spaced apart from each other on both sides of the strip consisting of weft yarns, each end of the woven fabric having a fringe 20 consisting of warp yarns 24; The warp threads at each end of the fabric are supported so as to be woven together with the weft threads supported between the ends to form a weave seam, and the device includes means for forming a shed opening 36 in the weft threads and for interweaving the warp threads of the fringe together. A pair of interlacing arms 40 are provided for sequentially grasping each book and passing it through the shed opening, the interlacing arms 40 starting from a first position with their free ends 122 extending through and protruding from the shed opening. means 124 for threading the warp threads through the shed opening, the free ends being movably supported to a second position in which they are withdrawn from the shed opening, the free ends having means 124 for selectively gripping the warp threads; and a pair of transfer arms 30 having free ends provided with means for selectively gripping the warp threads separated from the fringe, said transfer arms having said free ends 32 attached to said fringe. a first position for grasping the separated warp threads proximate to the interlacing arm 40; transfer means movable between a second position in which the warp yarns are gripped by the end portion; and means for sequentially separating the warp yarns one by one from the fringe, the transfer arm being movable between the first and second positions; A pair of separators or separation means 28 having means for moving the warp threads at said free ends of said arms when in position 1 and means for pressing the warp threads into the seam (in the embodiment, the serration teeth 1
62), the entire fringe having a plurality of warp yarns supported vertically and juxtaposed to each other, the warp yarns being supported by at least one weft yarn near the end of the fringe, and the said separation The means are
a first movable member or yarn separation member reciprocating in a direction parallel to the weft yarns between a first position engaging the warp yarns of the flange and a second position passing the warp yarns to the free end of the transfer arm; having 28;
The movable member is characterized in that it has means for gripping the first warp thread it strikes when it moves into a first position in which it engages the warp threads.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Illustrated in FIG. 1 is an example of an apparatus embodying the present invention for forming a woven seam connecting opposite ends 12, 14 of a woven belt. The ends 12, 14 of the woven belt are shown spaced and supported. A strip of woven material is cut from either end and supported between the ends of the belt. One end of the strip is stopped and a weight is attached to the other end so that the strip is taut. The warp threads are extracted from the material of the strip 16 placed between the ends of the belt, leaving only the weft threads 18.

The ends 12, 14 of the fabric can be supported in a conventional manner, with one end 12 of the fabric being supported on an elongated metal tube and the other end 14 similarly being spread over the elongated metal tube. The metal tubes are supported at their ends in a manner similar to that used in manual seam looms, and the metal tubes are parallel and spaced apart. The metal tubes are spaced apart from each other with dimensions sufficient to accommodate a seam therebetween, and the seam loom embodying the invention is provided between the metal tubes to provide linear movement in the longitudinal direction of the elongated metal tube. supported as possible.

The ends 12, 14 of the belt each have a fringe 20 formed by removing the majority of the weft threads. In a preferred form of the invention, a relatively thin ribbon 22 is provided, leaving some weft at the edge of the fringe 20.
The warp threads 24 of the fringe 20 are held in proper positions and the warp threads are held in proper relative positions with respect to each other. The ends of the ribbon 22 are supported such that the warp threads 24 forming the fringe 20 extend vertically upwardly from the periphery of the strip 16 and face spaced apart on each side of the strip.

The weave seam 10 is formed by separating the initial warp threads or warp strands 24 of the fringe 20 and weaving them into the weft threads 18 of the strip. The warp or warp strands 24 of the fringe on the other side of the strip are then separated and woven into the weft of the strip. This cycle is repeated until the seam is woven across the width of the belts being joined.

1 and 2, the warp threads 24 of the fringe 20 are separated one after another to form the weft threads 18 of the strip 16.
1 schematically shows the means provided by a device embodying the invention to enable it to be incorporated into a device;
This separating means of the structure shown in FIGS. 1 and 2, which will be explained in detail later, has a reciprocating thread separating part 28, which is shown in FIGS. Warp threads 24 following the fringe 20 from the retracted position shown by solid lines in FIG.
and the thread separating member 28 are movable to a second advanced position in which they engage or grip. Thread separation part 2
8 then moves to its retracted position while separating the grabbed thread 24 from the rest of the fringe 20. Such a thread separation element 28 is provided adjacent each fringe 20.

The apparatus embodying the invention further includes a pair of transfer arms 30 on either side of the seam 10. Each transfer arm 30 has 10 woven seams
It is supported for pivoting movement about a horizontal axis parallel to the warp threads. The free end 32 of each transfer arm 30 has a second thread separating member 28.
Means are provided for grasping the warp threads 24 held in this thread separating element 28 when they are in the retracted position as shown in the figures. The free end 32 of the transfer arm 30 is positionable so that the free end 32 of the transfer arm 30 can grip the sorted warp threads 24 when the thread separating element 28 is moved to the retracted position. The transfer arm 30 then pivots from the yarn gripping position shown in FIGS. 1 and 2 to the position shown in FIG. As shown in Figures 4 to 4, it moves generally forward and downward to assume the position shown in Figure 3, i.e. the warp threads 2
The free end of 4 will be moved up to the plane of seam 10.

The apparatus embodying the invention further includes means for forming a shed opening 36 in the weft 18 of the strip 16, as shown in FIGS. 3 and 4. This device, which will be described in more detail below, generally comprises a jack card device of the type commonly used for forming shed openings in looms.

The apparatus embodying the invention further includes a pair of interlace arms 40 with free ends 42 extending within the shed opening 36 and held at the free ends 32 of the transfer arm 30. It is supported so as to be movable between a position shown in FIG. 3 in which it grips the warp threads 24 that have been drawn, and a retracted position shown in FIG. The free ends of the warp threads 24 are pulled through the shed opening 36 to the opposite side of the seam 10 by an interlacing arm 40.

Apparatus embodying the invention further includes a pair of extractor arms 44 located on opposite sides of the seam 10, the extractor arms 44 being located proximate the longitudinal edges of the seam 10 being formed. Each extractor arm 44 is movable between an extended position as shown in FIG. It is provided. In this way, the extractor arm 44 can grasp the ends of the warp threads 24 that have been pulled through the shed opening 36 by the interlace arm 40, as shown in FIG.
The extractor arm 44 is then moved rearwardly into the retracted position shown in dotted lines in FIG. 4, in which the captured warp yarns 24 are pulled against the seam surface 46.

Using this device, selected warp threads 24 of the fringe 20 are separated from the remaining warp threads of the fringe and threaded through the shed opening 36 by the transfer arm 30 and the interlacing arm 40. The warp yarns 24 are then pulled by the extractor arm 44 while being pressed against the seam surface 46. After the warp threads 24 are pulled by the extractor, a lay/reed mechanism as described later rotates the advanced reed and drives it into the warp threads.
Osa then returns to the neutral position. The shed opening 36 is then turned up and down by the operation of the jacket card machine described above, and then the fringe 20 on the opposite side of the seam 10 is opened.
One warp thread 24 is sorted out and separated from the fringe. The warp yarns 24 are then gripped and moved by the transfer arm 30, where the warp yarns 24 are gripped by the free ends of the interlacing arms 40 and extend through the shed opening 36.
Next, the extractor arm 40
and pull it while pressing it against the seam surface 46. After the warp yarns 24 have been pulled back by the extractor, the lay-and-lead mechanism advances and the reeds are simultaneously driven into the warp yarns, and then the reeds return to a neutral position. This process is repeated continuously until the warp yarns of the fringe 20 are woven into the weft yarns of the strip 16, thereby forming the woven belt at both ends 12, 1.
4 are joined to form a weave seam.

FIG. 5 particularly shows a preferred form of apparatus embodying the invention, suitable for carrying out the seam weaving process described above. The apparatus shown in FIG. 5 has a frame structure 50 adapted to support the above-described seam weaving apparatus and movably supported on a plurality of wheels 52. Since the frame 50 is movably supported, the seam weaving device supported by the frame 50 can move linearly along the longitudinal direction of the seam 10 as the seam weaving process progresses. Machine frame 50 has vertical struts 54 that support horizontal support frames 56. The cantilevered frame, on the other hand, has the thread separating and weaving device described above.
The vertical column 54 also has a control box 58 provided to house conventional air control equipment used to control the operation of the yarn separating and weaving equipment. The frame 50 includes both ends 12 and 14 of the woven belt.
It further includes means for providing a horizontal flat surface supporting the weave seam 10 joining the . This flat surface is
The illustrated structure is formed of a sheet metal housing 51 supported by a frame 50 and having a flat horizontal top surface.

The frame 50 can also be used as a regular jacket card machine 6.
0 is also supported. The jacket machine is for controlling the shed opening formed by the weft thread 18 of the strip 16. In a preferred form of the invention, this jacket card machine is manufactured by Samuel Dracup.
& Sons, Ltd, Lane Close Mills, Great
Horton, Bradford West Yorkshire,
A jacket card mechanism manufactured in England will suffice.
This conventional commercial jack card machine 60 has a frame 5 such that the needle of the machine projects upwardly and is movable vertically in response to actuation of the jack card machine.
Supported at 0.

The frame also supports a heald assembly 62 and a conventional spring box 64 mounted vertically above the jack card machine 60. As is conventional, the spring box 64 includes a number of vertically mounted coil springs, with each weft 18 of the strip 16 being provided with at least one spring. Between the spring box 64 and the vertically reciprocating needle of the jacket card machine 60, there is a
A plurality of healds 66 are attached as will be described in detail later. Each heald 66 has a weft thread 1
The heald 66 surrounds each spring of the vertically mounted spring box 64 and the jack card machine 6.
0 to each needle. Jack card machine 60 moves the sorted needle vertically, thereby vertically moving the heald 66 connected to the needle. Such movement of the heald 66 results in movement of the weft thread 18 to form a shed opening. Using the jacket card hold mechanism, the shed openings 36 formed by the weft threads 18 can be changed to any desired pattern, and the width of the shed openings 36 can also be changed to match the desired seam style.

One of the features of the present invention is the construction of the heald 66, which is configured to slide over the weft threads 18 and eliminate the need for threading individual weft threads 18 through the heald 66. Particularly regarding the structure of the illustrated healds, as shown in FIG. 13, each heald consists of a pair of thin metal blades 67, 69 of approximately the same length. These blades 6
7 and 69 are arranged parallel to each other, and a thin metal disk 71 is provided between the ends of the blades to support the ends of adjacent parallel blades in spaced apart parallel facing relationship. This circular metal disk has a thickness slightly larger than the thickness of the weft thread. Blades 67 and 69 are metal disks 71
is fixedly joined to. This blade 67, 69
There are various ways to join the metal disk to the metal disk.
In a preferred embodiment of the invention, the blades 67, 69 are laser welded to the metal disk 71.
The heald 66 also has a second metal disk 73 between the blades 67 and 69 adjacent to the first metal disk 71 and a little distance therefrom. This second metal disk 73 is connected to one blade 69.
It has a flat side surface that is fixed to and in contact with the other metal blade 67. In a preferred form of the invention, blades 67, 69 are flexible and are joined at only one end so that they can be unfolded as shown in FIG.

In operation, once the strip of woven fabric 16 is in place and the warp yarns are removed, a heald 66 is placed around each individual weft yarn 18. The free ends of the blades 67, 69 of the heald 66 slide apart and over the weft thread 18. blade 67,
Since the blade 69 has sufficient flexibility, the blade 67 can be sufficiently separated from the second disk 73 to remove the weft thread 1.
8 can be passed between the blade 67 and the second disc, so that the weft thread 18 is connected to the disc 7
1,73 and blades 67, 69. In this way, the weft thread is securely retained within the heald 66.

Now, paying particular attention to the apparatus for successively separating the warp threads 24 one by one from the fringe 20 in order to pass them through the shed opening 36, the means for separating the warp threads are shown in FIGS. 6 and 8 to 11. As shown in the figure. The devices provided on one side of the weave seam 10 for separating the warp yarns 24 and passing them through the weft yarns 18 to form the weave seam are mirror images of the devices provided on the opposite side of the seam. Therefore, only the devices on one side of the seam will be described in detail.

In the illustrated structure, a pair of suspension arms 70 extend downwardly from the free end of the cantilever frame 56, and the upper end of each arm 70 is secured to the free end of the cantilever frame 56. Since the structures of the arms 70 suspended downward are substantially the same, one will be described in detail. Each of the downwardly suspended arms 70 has a horizontally extending support arm 72 (FIGS. 6, 8, and 9).
) and a sliding track or sliding body 74. The means for successively separating the warp threads 24 from the fringe 20 includes a separator body 28 which is engaged with the warp threads 24 following the fringe 20 from the retracted position shown in dotted lines in FIG. It is provided so that it can be moved horizontally to the gripping position. Means for supporting the separator body 28 in a reciprocating manner is also provided in the structure shown, and as shown in FIG. A T-shaped sliding member 80 is received within the groove 78 and is reciprocatable in the longitudinal direction of the sliding track 74. The separator body 28 is fixed to the sliding member 80 and is therefore capable of reciprocating movement with the sliding member.

Separator body 2 between the extended position and the retracted position
Means are also provided for linearly reciprocating 8. In the illustrated embodiment of the invention, the means for effecting this movement include an air cylinder 82 and a piston 84. The forward end of cylinder 82 is fixedly connected to sliding track 74 and the free end of piston 84 is connected to sliding member 80. Air cylinder 82 may be any suitable commercially available cylinder assembly, but in the preferred form of the invention, air cylinder 82 is manufactured by Kuhnke Pneumatic, Inc.
Commercially available pistons and cylinders manufactured in Malente/Holstein, West Germany are used.

With particular attention to the illustrated construction of separator 28, separator 28 has very small L-shaped plates that form a generally horizontal plane with "L" legs 86 extending in the direction of the fringes. It is provided. Separator body 2
8 also has a groove 88 formed at the junction of the separator legs 28 and the body portion, which groove 88 is provided to accommodate a plurality of warp threads 24 of the fringe 20. Separator 28 also has a sorting needle housed within a generally narrow, flat, horizontal slot 91 that bisects a portion of body 28. The sorting needle 90 is supported within the narrow flat slot 91 for horizontal reciprocating movement in a direction perpendicular to the vertical plane formed by the fringes 20 of the warp threads 24. The sorting needle 90 has a very small hook 92 which is arranged to engage one warp thread 24 of the fringe 20 and press it against a surface 94 of the leg portion 86 of the separator body while pinching the warp thread 24.

The retracted position and hook portion 92 of the sorting needle 90
Means are also provided for reciprocating movement between positions of engagement with the warp threads. In the illustrated construction, this means comprises a small air cylinder 96 fixed to the separator 28 and a piston 98 connected to the sorting needle 90. Cylinder 96 is connected to a source of compressed air by a flexible hose 100.

Means are also provided for resiliently supporting the sorting needles 90, which means move the separator body 28 from the retracted position until the sorting needles 90 reach the front warp threads 24.
The sorting needles 90 are arranged to deflect under the force exerted on the sorting needles 90 by the warp yarns 24, so that when the warp yarns engage the sorting needles 90, the separation device removes the warp yarns. You can prevent them from being bundled and grabbed.
In the illustrated construction, a narrow horizontal slot 91 in the separator body supports the sorting needle 90 for reciprocating movement within the slot 91 in a generally horizontal plane toward the warp yarns 24. A very weak leaf spring 102 is mounted within the slot 91 to resiliently support the sorting needle 90. The leaf spring 102 is specifically selected to support the sorting needle, but when the sorting needle engages the proximal warp yarns 24, the sorting needle moves sufficiently to prevent the warp yarns from bunching and grabbing.

In a preferred form of the invention, the separator body 28 is supported between the weft threads 22 of the ribbon supporting the free edges of the warp threads 24, as shown in FIG. The separator body 28 is the weft thread 22
It is provided so as to be able to slide back and forth in the direction of the weft thread 22 between the threads. In this way, the weft threads 22 ensure that the ends of the warp threads 24 are properly and properly positioned relative to the separator body 28.

As previously mentioned, means are also provided for grasping the warp threads 24 drawn out from the fringe by the separator body 28 and for moving the free ends of the warp threads 24 close to the shed opening 36 to one side of the shed opening 36. , in this position the warp threads 24 are gripped by the interlacing arms 40. This means is the sixth
As shown in the figure and FIGS. 8 to 11, it has a transfer arm 30. The entire transfer arm 30 is L-shaped and has one end 32 that grips the warp threads 24 and the other end 104 that is supported by the frame. In particular, the frame or support structure has a horizontally rearwardly extending rigid arm 106 to support the other end 104 of the transfer arm 30.

The free end or end 32 of the transfer arm 30, positioned adjacent the separator assembly, has means for gripping the separated warp yarns 24. The gripping means may have other structures, but in FIGS. 9 and 12, the transfer arm 3
A notch or opening 108 is cut into the free end 32 of the transfer arm, and the free end of the transfer arm is hollow and functions as a cylinder 109. The cylinder houses an air actuated piston 110 and the piston 11
0 is the first position where the notch 108 is open, and the piston 110 transfers the selected warp yarn 24 to the notch 10.
8 while pressing the scissors. This will make the 12th
It is supported so as to be movable between a second position in which the warp threads 24 are engaged so as to sandwich them as shown in the figure.

Means are also provided for pivoting the transfer arm 30 so that the warp threads 24
The free end of is brought downwardly toward the plane of the weave seam and inwardly from a vertical plane adjacent the edge of the seam to a position toward the center of the seam. In the illustrated construction, this means includes an air rotary cylinder 112 mounted on the support arm 106;
The piston 114 also forms a linearly extending air cylinder assembly. Reciprocating piston 1
16 is attached to the end 104 of the transfer arm 30. Although rotary piston 114 and cylinder 112 may be conventional rotary air pistons and cylinders, in embodiments of the present invention
Commercially available rotary pistons and cylinders manufactured by Microtechnik, Grenchenl Switzerland are used.

In operation of the transfer arm 30, the transfer arm 30 is initially in the position shown in FIG.
Piston 110 housed within (Fig. 12)
is in the retracted position. The separator 28 is actuated to grab the warp threads 24 and separate them from the remaining warp threads of the fringe 20, and as the separator body 28 moves rearward, the warp threads 24 are drawn into the notches 108 in the free ends 32 of the transfer arms 30. . A piston 110 in the free end 32 of the transfer arm 30 is then actuated to transfer the warp yarns 24 through the notches 108.
It is clamped to the end wall 111 of. The direct-acting piston 116 and cylinder 114 are then actuated to move the transfer arm 30 inwardly, ie, toward the center of the seam 10.
In this way, the free ends 32 of the warp threads 24 are moved away from the separator device 28. The rotary arm 112 of the rotary cylinder is then actuated to rotate the transfer arm 30 from the position shown in FIG. 6 to a position where the free end of the transfer arm 30 is adjacent the plane of the seam.

Warp yarn 2 held by transfer arm 30
Means are also provided for grasping the warp threads 4 and pulling the free ends of the warp threads through the shed opening 36 to the other side of the seam area. In the illustrated construction, this means includes an interlacing arm 40 supported for pivoting movement about a generally vertical axis. In the illustrated construction, the interlace arm 40 is generally L-shaped with one end 120 supported for pivoting about a vertical axis and a shed opening from one side of the seam 10 in a generally horizontal path. 36 and the other free end 122 supported for movement through 36 to the other side of the seam. The structure of the free end 122 of the interlace arm 40 is similar to the structure of the free end 32 of the transfer arm 30, so that this free end 122 also
It has means for gripping the warp threads as shown in the figure. In particular, the free end 122 of the interlacing arm 40 has a notch 124 for receiving the end of the warp threads, and the free end 122 of the interlacing arm 40 is tube-shaped, which includes a cylinder containing a piston that moves from a retracted position to a warp thread gripping position. Form.

In actuation of the interlace arm 40, the interlace arm 40 swings from the retracted position (FIG. 2) through the shed opening 36 to the position shown in FIG. 3 before the transfer arm 30 pivots downward. , the free end 122 of the interlace arm 40 is then adjacent the edge of the seam 10. Next, when the transfer arm 30 is pivoted downward, the transfer arm 30
The free ends 32 of the interlacing arms 40 extend downwardly over the free ends 122 of the interlacing arms 40 to allow the warp threads 24 to hang over the free ends of the interlacing arms 40 such that the warp threads 24 are received within notches 124 provided within the interlacing arms 40. It is possible to do so. A piston in the free end of the interlace arm is actuated to extend so that it pinches and engages the warp threads 24 while the piston pinch means of the transfer arm 30 releases the warp threads. Transfer arm 30 now pivots back to its original position, while interlacing arm 40 also returns to its retracted position (FIG. 4).
However, at this time, interlace arm 4
The free ends 122 of the warp threads 24 are drawn into the shed opening.

Interlacing arm 40 may have other configurations in other embodiments, and the free end 122 of interlacing arm 40 may be extended from the retracted position through shed opening 36 to transfer transfer. Other means may be used to move the warp threads 24 held by the arm to the gripping position. For example, in other embodiments, the interlace arms are linear and relatively long stroke pistons and cylinders are provided to linearly move the ends of such interlace arms.

After the interlacing arm pulls the ends of the warp yarns 24 through the shed opening 36, the warp yarns 2 are supported on the free ends 122 of the interlacing arm 40.
4 and pull the free ends of the warp yarns backwards and upwards from the shed opening area to bring the warp yarns to the seam surface 46.
Means are also provided for engaging the. This means that the reed teeth engage with the warp threads and move the warp threads to the joint surface 4.
6 to provide a means to maintain tension in the warp threads while pressing against the warp threads. This means for gripping the ends of the warp threads 24 comprises an extractor gripper 44 consisting entirely of vertically extending arms. The lower end 130 (FIG. 6) of the extractor gripper arm 44 connects the warp threads 24 held by the interlacing arm 40.
having means for grasping the free end of the In a preferred form of the invention, this gripping means is the same as that provided at the free end of transfer arm 30 and free end 32 of interlace arm 40, and comprises a piston and cylinder combination. The lower end 130 of the extractor gripper arm is tubular and functions as a cylinder for accommodating a piston. The lower end 130 of the extractor arm 44 has a notch 132 for receiving the ends of the warp threads 24, and a piston 131 housed within the lower end 130 reciprocates into gripping engagement with the warp threads 24. Means are also provided for horizontally moving the extractor arm 44 from the retracted position shown in FIG. It is possible to do it. Figure 4 shows one extractor arm 44.
is shown moved from the retracted position indicated by the dotted line to the forward position where it can engage with the warp threads 24. Although the means for causing the extractor arm 44 to perform horizontal reciprocating motion can have various structures, in the illustrated example, the extractor arm 44 is connected to the support arm 7.
The support arm 70 is movably supported by a linear bearing 136 supported at the upper end of the support arm 70 , while the support arm 70 is fixed to the free end of the cantilever frame 56 . The linear bearing 136 is a horizontally extending rod 1.
38, and the extractor arm 44 is supported by a sliding member 140 supported by the rod 138 so as to be capable of linear reciprocating motion. Means are also provided for selectively displacing the slide member 140 along the support rod 138. This means may be a conventional pneumatic piston and cylinder;
The means for imparting movement to the sliding member 140 is, in the illustrated example, a commercially available pneumatic cable cylinder 142 manufactured by Martonair, Twickenhaum, England.
are using. Cable cylinder 142 generally includes a cable 144 that is suspended between a pair of pulleys 146.
has. Sliding member 140 is attached to cable 144. The cable cylinder 142 also has a cylinder 146 and a piston 148 is connected to the cylinder 14.
It is housed within 6. Cable 144 is connected to piston 148. When air pressure is applied to the cylinder 146, the piston 148
44 and the sliding member 140 is supported by the support rod 138.
Make a displacement movement upward.

The extractor gripper assembly also includes means for effecting selective vertical movement of the lower end 130 of the extractor arm 44. In a preferred form of the invention, this means comprises a pair of air cylinders 150, 152 vertically stacked on top of each other. More particularly, this means comprises a first air cylinder 150 mounted perpendicularly to the sliding member 140.
The cylinder 150 has a piston 154 and a second cylinder 152 fixedly attached to the lower end of the piston 154. This second cylinder 152
also houses a piston 156 which is supported for vertical movement. The lower end of piston 156 supports extractor arm 44 .

In operation of the extractor gripper 44,
Activation of cable cylinder 142 advances extractor gripper 44 from the position shown in FIG. 6 to a position where lower end 130 of extractor gripper 44 is adjacent shed opening 36. Cylinders 150 and 152 are then actuated to move extractor arm 40 downward to a position where notch 132 can receive the warp yarns 24 that have been drawn by interlace arm 40 through the shed opening. Warp thread 2
4 is then pinched and engaged within the notch 132 by the piston 131. Cylinder 152 is then actuated to move extractor gripper arm 44 upwardly to a position where warp threads 24 held by free end 130 of extractor gripper arm 44 are slightly above the seam plane. The cable cylinder 142 is then actuated again to cause the extractor arm 44 to translate backwards, thereby pulling the warp threads 24 rearwardly so that the warp threads 24 are pressed against the seam surface 46 and the free ends of the warp threads 24 are placed under the ski 154. Being pulled. Then the second cylinder 1
50 is activated to move the extractor arm 44 to the sixth
Move it upward to the position shown.

The warp threads 24 are aligned with the seam surface 46 so as to adjust the knots of the cloth.
Means are also provided for driving into. Warp thread 24
The means for driving into the seam surface 46 is best shown in FIG.
60. The lay lead mechanism 160 has a plurality of reed teeth 162, which are conventional and generally consist of thin elongated metal strips arranged side by side, and the reed teeth have a plurality of closely juxtaposed vertical parallel surfaces. Each forming strip or tooth 162 is disposed between each pair of weft threads 18. The lay lead mechanism 160 also has a reed tooth 162.
A plurality of recessed teeth 1 are arranged so that it can be moved from the position shown by the solid line to the position shown by the dashed line or dotted line shown in FIG.
It also has means for supporting 62.

More particularly, the means for supporting the reed tooth 162 is capable of pivoting between the position shown in solid lines in FIG. Possibly, it has a support arm 164 whose lower end is pivotally connected to the machine frame 50. Means are also provided for causing the support arm 164 to pivot back and forth. In the illustrated construction, this means includes an air piston 166 pivotally connected to the machine frame 50 by a pin 168, which air piston is also pivoted to the support arm 164 by a pin 172 at the midpoint of the other end of the support arm 164. It has a piston 170 connected thereto. The upper end of support arm 164 has a pivot axis 174. The flat metal strips forming the reed teeth 162 are mounted in parallel stacks on the pivot shaft 174;
74 and are supported on a pivot shaft 174 for free pivot rotation about the shaft 74 and are freely movable independently of each other. One of the features of the present invention is that when the support arm reaches the dotted line position shown in FIG. be. This means imparts a wave-like effect to the serration teeth 162. This wave effect propagates from one side of the seam to the other in the direction of the free ends of the warp yarns, which are pressed against the seam surface. In other words, Osatooth 16
2 engages the warp threads one by one from one side of the seam surface to the opposite side, and hits the warp threads against the seam surface 46. When the air cylinder 166 pivots the support arm 164 from the solid line position shown in FIG. 7 to the dotted line position, the reed tooth 164 is moved to the dotted line position. Means are also provided for moving the retarding teeth 162 to the dash-dotted position shown in FIG. 7 in which they engage the warp threads and force them against the seam surface 46. The means for moving the recess tooth 162 from the dotted line position shown in FIG. 7 to the one-dot chain line position is as shown in FIG.
Lead roller 1 provided to engage with 82
It has 80. The lead roller 180 has recessed teeth 16
Therefore, the roller 180 moves from one end of the pivot shaft 174 to the other end, and sequentially contacts the serration teeth 162 while reciprocating in this manner. It is possible. As the lead roller 180 moves along the length of the horizontal pivot shaft 174, the roller sequentially contacts the reed teeth and pivots the reed teeth from the dotted line position shown in FIG. 7 to the dashed line.

Means are also provided for such translation of lead roller 180 along the length of horizontal pivot axis 174. In the illustrated construction, the lead roller 180 has a generally vertically extending shaft 186.
The lead roller 180 is supported for rotation about this axis, and the lead roller 180 is freely rotatable about this axis. The lower end of the shaft 186 is supported by a sliding member 188 which is slidably supported on a pair of support rods 190. The lower end of the sliding member 188 is fixed to a cable 192 of a cable cylinder 194 having the same construction as the cable cylinder 142 supporting the extractor grip arm 44. Cable cylinder 194 causes sliding member 188 and lead roller 180 to perform translational reciprocating motion along support shaft 190 in the direction of the longitudinal axis of serpentine pivot axis 174. Although the sliding members 188 have been described as being driven by cable cylinders 194, it is readily understood that other embodiments of the invention may include an elongated pneumatic piston-cylinder to effect these translational movements. I can understand. Similarly, screw drives or other similar conventional devices may be used.

In a preferred form of the invention, the frame 50 also has an electric motor 53 coupled to drive at least one wheel 52 supporting the frame 50;
The seam loom is mechanically driven in the longitudinal direction of the seam as the seam weaving process continues.

When the seam weaving process continues and a seam surface is formed, a signal is sent to the electric motor 53 so that the electric motor 5
Means are also provided for actuating 3 to move the frame 50. In a preferred form of the invention, the lay-lead mechanism 160 includes means for sending a signal to the electric motor 53 to cause the electric motor to move the machine slightly when the seam surface 46 is being formed. The means for sending signals to the motor includes an electrical switch 196 mounted on support arm 164 in the illustrated construction. In a preferred form of the present invention, the male teeth 16
2 and the structure for pivoting the reed teeth around the horizontal pivot axis 174 are all attached to the frame 198.
The frame 198 is supported by a pivot pin 20.
0 to the upper end of support arm 164. Frame 198 supports support arms 164
is supported with limited pivoting movement relative to the upper end of the holder. The frame structure 198, lead mechanism, means for pivoting the individual buck teeth 162, etc. are such that when the support arm is in the dotted position of FIG. It has a weight that causes it to pivot clockwise around an axis. Seam surface 46 limits movement of the setback tooth when it is formed and pivots from the dotted line position in FIG. 7 to the dashed line position. When the seam surface is sufficiently formed and the reed teeth are pressed and engaged with the seam surface, the frame 198 pivots counterclockwise to engage the switch 196 and send a signal to the electric motor 53 to start the seam loom. Move it forward a little from the joint surface 46.

Means are also provided for controlling the operation of the air piston and cylinder assemblies described above and for delivering air pressure to these piston and cylinder assemblies, thereby causing the air cylinder assemblies to operate in accordance with a control sequence. In a preferred form of the invention, the control means are housed within the control housing 58;
Commercially available Martonaire B1−Selector manufactured by Martonaire Ltd, Twickenham England.
Model/660H is used. As usual,
The controller is connected by an air line through a series of control valves to and actuates each air operated piston cylinder. A pneumatic sequencer operates to supply air to the pneumatic pistons and cylinders in a sequence, thereby controlling the various components in a stepwise manner to actuate them in a sequence.

In a preferred form of the invention, means are also provided for stopping operation of the machine if any of the piston and cylinder assemblies of the type shown in FIG. 12 fail and no longer grip the thread properly. As mentioned above, each gripper has a piston and cylinder combination. Electrical contacts 210 at the end of each cylinder
(FIG. 12), the piston also has electrical contacts 212. When the thread is properly engaged with the gripper member, thread 24 enters between piston contact 212 and cylinder contact 210, thereby breaking electrical contact between piston contact 212 and cylinder contact 210. On the other hand, if the thread is not gripped correctly, the piston end will be in electrical communication with the cylinder contact 210 and the machine will stop. If necessary, an audible alarm may be installed on the electrical device to stop the machine.
One of the features of the present invention is that if the operator fails to grasp the warp threads 24 correctly, he can correct the heald sequence by reversing it to the point where the flaw occurred.

Another advantage of a device embodying the invention is that the seam width can be freely adjusted, for example from about 2 inches to 6 inches, depending on the type of fabric being spliced and the desired width of the seam. In a preferred form of the invention, the downwardly suspended support arms 70 are connected to the cantilevered frame 56 for adjustable movement toward or away from each other, thereby controlling the selector mechanism and the warp pulling and weaving means. Positioning adjustment is possible. Therefore, the width of the woven fabric strip placed between the ends of the woven fabric can be any width, and the seam width can be chosen arbitrarily.

Various features of the invention are set forth in the claims.

[Brief explanation of the drawing]

1 is a schematic perspective view of a device embodying the invention for separating the warp yarns from the fringes and passing them through shed openings formed by the weft yarns; FIG. A view similar to Figure 1 showing the separation of the warp yarns from the fringe, and Figure 3 similar to Figures 1 and 2 showing the transfer arm delivering the yarn to the interlacing arm extending through the shed opening. Similar figures, FIG. 4 are similar to FIGS. 1-3 further illustrating the interlacing arms drawing the selected warp threads into the shed opening, and FIG. 5 is a view of an apparatus embodying the invention. 6 is a partially enlarged side elevational view of the device shown in FIG. 5, and FIG. 7 is a partially enlarged side elevational view of the device shown in FIG. 5, showing the lay-read mechanism. , a heald forming a shed opening, FIG. 8 is a view taken along line 8-8 of FIG. 6, and FIG. 9 is an overall view taken along line 9-9 of FIG. 6, showing the thread separating device. Figure shown, 1st
0 is a view taken along line 10-10 of FIG. 9, FIG. 11 is a view taken along line 11-11 of FIG. 9, and FIG. 12 is an enlarged view of the end of the transfer arm of the apparatus shown in FIG. A partially sectional view, FIG. 13 is the seventh
The perspective view of the heald shown in FIG. 14 is an enlarged view of a part of the spring box shown in FIG. 5. 10... Seam, 12, 14... Belt end, 16
... Strip, 18 ... Weft, 20 ... Fringe, 24 ... Warp, 28 ... First movable member (separator member), 30 ... Transfer arm, 36 ... Shed opening, 40 ... Third 1st and 2nd
arm (interlace arm), 44... extractor arm, 60... jacket card machine, 62... heald assembly, 64... spring box, 6
6, 67, 69... Heald, 71... First spacer, 73... Second spacer, 160... Ray/lead mechanism, 162... Reed tooth, 180...
roller.

Claims (1)

[Scope of Claims] 1. A device for forming a weave seam in order to form an endless woven fabric belt by joining both ends of a long woven fabric through the weave seam, the apparatus being in a mutually parallel positional relationship. means for supporting a strip of weft threads and supporting both ends of the woven fabric close to and spaced apart from each other on both sides of the strip of weft threads, each end of the woven fabric having a fringe of warp threads; The warp yarns at both ends are supported so as to be woven together with the weft yarns supported between the ends to form a seam, and this device includes means for forming shed openings in the weft yarns, and means for sequentially weaving the warp yarns of the fringe one by one. a pair of interlace arms for grasping and passing through the shed opening, the interlace arms extending from a first position with their free ends extending into and projecting from the shed opening; means for passing the warp threads through the shed opening, the means being movably supported to a second position in which the warp threads are withdrawn from the shed opening and having means for selectively gripping the warp threads at the free ends; a pair of transfer arms having free ends provided with means for selectively gripping the warp yarns, said transfer arms having said free ends proximate said fringe to hold the separated warp yarns; a first position to grasp the
and a second position for carrying said gripped single warp yarn so that said warp yarn is gripped by said free end of said interlace arm when said interlacing arm is in said first position. transfer means movable; and means for sequentially separating the warp threads one by one from the fringe, the transfer arm being in the first position, transferring the warp threads to the free end of the transfer arm; a pair of separating means having means for moving; and means for pressing the warp threads against the seam; the entire fringe having a plurality of warp threads juxtaposed to each other with vertical support; supported by at least one weft thread near the end, said separating means between a first position in which it engages the warp threads of the flange and a second position in which it passes the warp threads to the free end of the transfer arm; characterized in that it has a first movable member that reciprocates in a direction parallel to the weft threads, and has means for grabbing the warp threads that it first strikes when the movable member moves to a first position in which it engages the warp threads. Automatic seam forming device. 2. The automatic seam forming apparatus according to claim 1, wherein the means for forming the shed opening comprises a jacket card machine. 3. The jersey card machine has a plurality of needles provided below the weft, a spring box provided above the weft, and a plurality of healds provided between the needles and the spring box, and the healds are connected to the needles. Claim 2, characterized in that it is attached to a spring of a spring box so as to engage with a weft thread, and moves the weft thread up and down in response to the movement of the needle to form a shed opening. Automatic seam forming device described in . 4. Automatic seam forming device according to claim 3, characterized in that the heald is inserted by sliding around the weft thread so that the weft thread is confined within the heald. 5. The means for pressing the warp yarns against the seam has a plurality of reed teeth, which are supported at close intervals and are provided between the weft yarns to separate the weft yarns. The automatic seam forming device according to item 1. 6. means for supporting the recess teeth so that the means for pressing the warp against the seam moves the recess teeth from a first position away from the joint to a second position proximate to the joint but slightly spaced apart; 6. The automatic seam forming apparatus according to claim 5, further comprising means for sequentially moving the warp yarns one by one from the second position to a position where the warp yarns are pressed against the seam. 7. The automatic device according to claim 6, wherein the means for moving the individual recess teeth sequentially moves the recess teeth one by one from one end of the seam to the other end of the joint surface. Seam forming device. 8. The reed teeth are supported for limited pivot movement about an axis parallel to the seam and for movement of this axis independently of each other, and this means for engaging the reed teeth one by one with the warp yarns in sequence Claim 6, characterized in that the roller has a roller that moves along the seam, and the roller engages with the recess teeth and presses the warp threads against the seam by the recess teeth. Automatic seam forming device.