• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:BE1020813A3
    申请号:E201200349
    申请日:2012-05-23
    公开日:2014-05-06
    发明作者:Iwano Yoshimi；Sakai Yosuke
    申请人:Toyota Jidoshokki Kk；
    IPC主号:
    专利说明:

    DEVICE FOR ADJUSTING THE TENSION OF THE HAIR CHAIN OF A WEAVING MACHINE FOR A DARK STRETCH
    BASIS OF THE INVENTION
    The present invention relates to a device for adjusting the tension of the pile chain of a loom for a pile fabric.
    In a loom for a pile fabric, the tension of the yarns of the pile chain varies mainly under the influence of three factors. The first factor relates to the movement related to the shedding of the yarns of the pile chain, the second factor representing the relative displacement between the tamping position and the forming position of the pulling line of the yarns in the motion related to the formation of the bristles, and the third factor concerning the rapid insertion of the weft which is packed after the filling of loose duit to form a layer of bristles. Although the variation in voltage due to the first and second factors appears moderately, the voltage variation due to the third factor occurs momentarily and therefore influences the pile string son significantly.
    To absorb such a variation in the tension of the pile warp threads, various types of pile tension adjusters have been proposed. In Japanese Unexamined Patent Application Publication No. 2010-1303065, a pile cord tension adjuster is disclosed, in which the tension variation of the pile warp threads, including a momentarily ascending voltage which occurs during rapid insertion of the weft to form the pile layer is sufficiently absorbed and a stabilized tension of the warp is maintained. More specifically, the device for adjusting the tension of the pile chain is located in the path of the threads of the pile chain unrolled from the warp of the pile chain to guide the threads of the pile chain. in the direction of the sponge armor formation cylinder located below the pile chain tension adjuster.
    The string tension adjuster has a flexible leaf spring and a curved rigid guide plate. The leaf spring is brought into contact with the pile warp threads and can be elastically deformed when it contacts the guide plate via the tension of the pile warp threads. It is arranged in such a way that the deformation of the leaf spring increases proportionally with the increase of the tension of the pile warp threads, so that the contact area of the leaf spring with the guiding plate and correspondingly increases the spring constant of the leaf spring. In accordance with the pile cord tensioning device of the cited publication, the tension variation of the yarns of the pile chain is sufficiently absorbed by increasing the spring load of the leaf spring proportionally to the increase of the tension of the threads of the pile chain.
    In general, the tension of a sheet of pile cord threads unrolled from the pile warp beam acts in the manner of a load evenly distributed over the leaf spring. In a shuttleless loom in which weft yarns are inserted through a crowd in a fragmented manner, it is well known that the warp yarns show tension at opposite sides of the warp yarn sheet in the width direction. the shuttleless loom which is less than the tension in the center of the warp sheet.
    This tendency is particularly evident in the warp yarns whose tension is set to be lower than that of the warp yarns of the lower warp.
    In the publication described above, wherein the pile warp yarns have a lower tension at the opposite sides in the width direction from the center, the leaf spring which receives said pile tension of the warp yarn undergoes some deformation in width. As a result, a variation is obtained in the running path of the pile warp threads between the pile warp beam and the leaf spring, resulting in winding of the pile warp yarns and / or entanglement between adjacent yarns of the pile chain. In addition, there is a fear of cracking of the leaf spring at its center in the width direction because of the higher load on the center of the leaf spring. Consequently, the hair string tensioning device of the publication indicated above shows a lack of sensitivity with respect to the variations of tension of the threads of the pile chain.
    The present invention relates to a device for adjusting the tension of the pile chain, of a loom for a pile fabric, which makes it possible to increase the sensitivity to the variations of tension of the threads of the pile chain over the entire length of the pile. width of the loom for making a pile fabric.
    SUMMARY OF THE INVENTION
    A loom is provided for the manufacture of a pile fabric which includes a lower warp beam, a pile warp beam and a pile chain tension adjuster. The string tension adjuster has a first leaf spring and a guide plate. The first leaf spring is made with a single elastic member that extends across the width of the loom for making a pile fabric. The guide plate is made of a rigid member and is spaced from the first leaf spring in the direction in which the first leaf spring moves when subjected to elastic deformation by the tension of the wire sheet of the hair chain. The yarn sheet of the pile chain of the warp of the pile chain is guided in the direction of the tightening line of picks of a woven fabric via the device for adjusting the tension of the pile chain and via a cylinder for the formation of sponge weave. The device for adjusting the tension of the pile chain is characterized in that, when the tension of the sheet of the threads of the pile chain which is exerted on the first leaf spring, the first leaf spring has a spring constant which is greater in the area adjacent to the center of the sheet width of the pile warp yarns than that obtained in areas adjacent to the ends of the sheet width of the pile yarns; the pile chain.
    Other aspects and advantages of the invention will become apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate by way of example the principles of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The present invention, together with its objects and advantages, will be best understood by reference to the following description of the presently preferred embodiments in conjunction with the accompanying drawings in which: Figure 1 is a schematic view wherein there is shown a loom for making a pile fabric according to a first embodiment of the present invention; Fig. 2 is a side view showing a device for adjusting the pile chain tension of the loom for making a pile fabric of Fig. 1; Figure 3 is an enlarged view showing the tensioning device of the pile chain of Figure 2; FIG. 4 is a plan view showing the tensioning device of the pile chain of FIG. 2; FIG. 5 is a side view similar to that of FIG. 3, but showing a device for adjusting the pile chain tension of a loom for making a pile fabric in accordance with FIG. second embodiment of the present invention; and FIG. 6 is a plan view similar to that of FIG. 4, but showing the tensioning device of the pile chain of FIG. 5.
    DETAILED DESCRIPTION OF THE EMBODIMENTS
    Hereinafter, the device for adjusting the pile chain tension of the loom for making pile fabrics is described in accordance with the first embodiment of the present invention with reference to Figs. 1-4. after that, the weaving loom for the manufacture of a pile fabric is simply designated by the term "loom". It should be noted that the right side and the left side of the loom as shown in Figure 1 correspond to the front and back of the loom, respectively. This means that the right-left direction when looking in Figure 1 corresponds to the front-rear direction of the loom. Referring to FIG. 1, in which the loom is shown schematically, the loosening of the lower chain 1 is rotated by an unwind motor of the chain Mg, which is electrically connected to a first one. chain running controller C1. The lower chain wires T which are unwound from the lower chain one by the action of the chain running motor Mg pass an arcuate rear guide plate 2 and over a tensioning roller 3 before crossing the rails 4 and the flapper comb 5. The woven fabric W is wound around the roll for the fabric via an extension bar 6, a roller itself 7 and guide rollers 8 and 9. The rear guide plate 2 is supported by a support (not shown) attached to the frame 11 of the loom and a support shaft 12 is rotatably supported by the frame 11. An arm sup 13 is attached to the support shaft 12 and rotatably supports at its upper end the tensioning roller 3. The tensioning roller 3 is pressed via any suitable compression mechanism (not shown) and absorbs the variations of tension of the lower warp threads T due to the movement of formation of the crowd via a negative expansion movement. An inner arm 14 is attached to the support shaft 12 and a rod 15 is rotatably connected to the lower end of the lower arm 14.
    A dynamometer 16 is mounted on the rod 15 to detect the tension of the threads of the lower chain T which is exerted on the tensioning roller 3 and is electrically connected to the first controller of the course of the chain wire C1. The first controller of the unwinding of the the chain C1 can be activated to control the speed of the unwinding motor of the chain Mg based on a preferably preset tension and on information of the tension of the warp thread detected by the dynamometer 16. A warp 17 of the warp of pile on which is arranged a sheet of threads of the pile chain Tp is located above the enunculus of the lower chain 1. The beam 17 of the pile chain is rotated by an unwinding motor. the chain Mp which is electrically connected to a second controller of the chain C2. The pile warp threads Tp which are unwound from the haunch 17 of the pile chain pass a guide roller 18, a pile chain tension adjuster 19 and a roller 20 of the pile chain. formation of the sponge weave, before crossing the smooth 4 and the flapper comb 5.
    The guide roller 18 is rotatably mounted on the frame 11 of the loom at a location below the beam 17 of the pile chain. The guide roller 18 has a pair of members (not shown) to be detected at the ends of the guide roller 18 where the threads of the pile chain Tp are not guided. A pair of proximity switches 21 (only one shown) is located in a face-to-face relationship with the pair of elements to be detected. The pair of proximity switches 21 serves to detect the rotation of the guide roller 18 and also to send detection signals to the second controller of the chain C2.
    The device for adjusting the tension of the pile chain 19 will now be described with reference to FIGS. 2 to 4 in which is shown in an enlarged view the device for adjusting the tension of the pile chain 19. The adjusting device the tension of the pile chain 19 is located below the guide roller 18 and adjacent thereto. As shown in FIGS. 2 and 3, the chain tension adjusting device of FIG. 19 includes a spacer 23, four first guide plates 24 (only one shown), two second guide plates 25 (one only being shown), a leaf spring 26, a threaded bar 27 and a fixed bar 28.
    The first and second guide plates 24 and 25 are spaced apart along the width of the loom. The pile chain tension adjuster 19 is mounted on a support shaft 22. The support shaft 22 extends across the width of the loom and is supported at its opposite ends in the frame 11 of the carrier. loom by a support device 29 and a bolt 30. A plurality of retaining panels 31 are permanently mounted on the support shaft 22 via any suitable means. A hook-shaped retainer 33 having a horizontal portion 32 is attached to each retaining ring 30 by means of a bolt (not shown). The spacer 23 which is made with a bar having a rectangular cross-section extends over the width of the loom.
    Each of said first and second guide plates 24 and 25 is formed of a rigid member and is bent so that their convex surface is oriented toward the leaf spring 26. The convex surface of each first guide plate 24 has a radius predetermined curvature. The convex surface of each second guide plate 25 has a radius of curvature which is greater than that of the convex surface of each first guide plate 24. Said first and second guide plates 24 and 25 are located across the width of the loom. weave in a horizontal position. When looking in the direction of the width of the loom, the length of each second guide plate 25 is shorter than that of each first guide plate 24.
    The leaf spring 26 is made of a single thin elastic member that extends across the width of the loom. The leaf spring 26 has a length which corresponds to the width of the sheet of the pile chain threads Tp guided by the guide roller 18 and serves as the first leaf spring of the present invention. As shown in FIG. 4, the second two guide plates 25 are located adjacent to the center X of the width of the sheet of the threads of the pile chain Tp. In addition, two of the first four guide plates 24 are located adjacent to the end Y1 of the width of the sheet of the threads of the pile chain Tp and the two other plates among the first four guide plates 24 are located adjacent the end Y2 of the width of the sheet of the yarns of the pile chain Tp. When looking in the width direction of the loom, the leaf spring 26 is longer than the first and second guide plates 24 and 25. As shown in FIG. rearward (or to the left when looking in the direction of Figure 1) and has a distal end 34 curved downward hook-shaped. The curved surface of the distal end 34 of the leaf spring 26 makes it possible to obtain uniform contact and uniform movement of the threads of the pile chain Tp with the leaf spring 26 and along the latter.
    The threaded bar 27 is constituted by a bar having substantially the same length as that of the leaf spring 26 extending in the width direction and a rectangular cross section. The fixed bar 28 consists of a tubular bar in which a space is provided which is large enough for the threaded bar 27 to be housed therein. The fixed bar 28 has, on its upper surface and on its rear side, a guiding surface 35 which is curved downwards.
    The tensioning device of the pile chain 19 is mounted on the support shaft 22 in the following manner. Firstly, the spacer 23, the proximal ends of the first and second guide plates 24 and 25 (the right side when looking in the direction of Figure 1 or the front end), the proximal end of the leaf spring 26 (the right side when looking in the direction of Figure 1 or the front end) and the fixed bar 28 are placed one on top of the other on the horizontal portion 32 of the device. retainer 33 and the threaded bar 27 is inserted into the space of the fixed bar 28. Then, the bolt 36 is inserted through the holes (not shown) of the respective horizontal portion 32, the spacer 23, the first and second guide plates 24 and 25 and the leaf spring 26, before being tightened by screwing into the threaded bar 27. Thus, the device for adjusting the tension of the pile chain 19 is mounted to obtain a unit . In the state in which the pile chain tensioning device 19 is mounted in position on the support shaft 22, the first and second guide plates 24 and 25 are spaced from the leaf spring 26 in the direction in which the leaf spring 26 is subjected to displacement via the elastic deformation due to the tension of the threads of the pile chain Tp. Since the curved surface of the second guide plate 25 has a greater radius of curvature than that of the first guide plate 24, the leaf spring 26 is less spaced from the second guide plate 25 than from the first guide plate 25. guiding 24 in the upper direction of movement of the leaf spring 26.
    The tensioning device of the pile chain 19 thus assembled to obtain a unit can be mounted easily on the support shaft 22. In other words, by arranging in alignment the bolt holes of the retaining supports 33 and the rings. 31 and then tightening the bolts (not shown) inserted through the holes in alignment, can be mounted the tensioning device of the pile chain 19 on the support shaft 22. The adjustment device the tension of the pile chain 19 can be activated by a negative expansion movement by using the deformation of the leaf spring 26 in order to absorb the tension variations of the threads of the pile chain Tp because of the movement of formation of the string crowd and also because of the rapid insertion of the weft which is subjected to tamping after the filling of loose duit to form a layer of bristles.
    Hereinafter, we will describe the case in which the tension of the thread of the pile chain Tp is applied to the leaf spring 26 with reference to FIG. 4. In the shuttle-free loom of FIG. Tp pile warp yarns have high tension at the location adjacent to the center X and low tension at the locations adjacent to the ends Y1 and Y2. As described above, the first and second guide plates 24 and 25 are bent with different radii of curvature so as to be spaced from the leaf spring 26 differently, and the leaf spring 26 is actuated as following.
    In the region of the center of the leaf spring 26 in which the high tension of the threads of the pile chain Tp is exerted, the first part L1 (referring to FIG. 3) of the leaf spring 26 comes into contact with the second guide plates 25 at an earlier time. The first portion L1 which is elastically deformable is relatively small, so that the spring constant of the leaf spring 26 in the central region is maintained to be relatively large. On the other hand, in the end regions of the leaf spring 26, in which there is a low tension of the threads of the pile chain Tp, the second part L2 (when referring to FIG. 3) of the leaf spring 26 contacts the first guide plate 24 at a later time. The second portion L2 which is elastically deformable is relatively large, so that the spring constant of the leaf spring 26 in the terminal regions is maintained to be relatively small. Thus, a relatively large spring load of the leaf spring 26 is exerted on the pile warp threads Tp having a high tension at the position adjacent the center X and a relatively small spring load of the leaf spring 26 '. exerts on the threads of the pile chain Tp having a low tension at the positions adjacent to the ends Y1 and Y2. As a result, the leaf spring 26 deforms uniformly across the entire width of the loom, including the areas adjacent to the center X and the ends Y1, Y2 of the width of the leaf of the pile yarns. Tp, so that the distal end 34 of the leaf spring 26 extends in a straight line across the entire width of the loom without any undulation.
    As shown in FIG. 2, a horizontally extending lever 37 is attached to the support shaft 22 and another lever 38 having a dynamometer 39 is connected at one end to the lever 37, and is attached at its other end to the frame 11 of the loom. The dynamometer 39 can be activated to detect the tension of the pile warp thread Tp in response to changes in the load on the support shaft 22 via the leaf spring 26 and to send a detection signal to the second controller of the sequence of the chain C2. The second controller of the unwinding of the chain C2 controls the speed of the unwinding motor of the chain Mp based on the voltage detection information that is sent by the dynamometer 39, with a preset reference voltage, and also on the rotation detection signal which is sent by the proximity switch 21 (when referring to FIG. 1).
    As shown in FIGS. 1 and 2, an oscillating lever 41 having an upper arm 42 is rotatably supported by the shaft 40 and the upper arm 42 has, at its distal end, a holding portion 43. The portion of material 43 has an arcuate surface whose radius of curvature is slightly less than the radius of roll 20 for forming sponge weave for snap insertion of roll 20 for forming sponge weave in the holding portion 43 of the rocking lever 41. Such snap-in insertion facilitates the assembly and disassembly of the roll 20 for the formation of the terry cloth weave. The arrangement in which the roll 20 for forming the sponge armor is located far away in a vertical direction from the leaf spring 26 facilitates the staining and replacing operation of the wire warp of chain. An elongated hole 45 passes through the lower arm 44 of the oscillating lever 41 at its distal end and the arm in question is rotatably connected to the rod 15 via a bolt 46 which passes through the elongate hole 45.
    As shown in Fig. 1, an L-shaped intermediate lever 47 is pivotally mounted on the shaft 48 at an intermediate position in the front-to-back direction of the loom, and a mechanism for forming the pile layer 49 is located above the intermediate lever 47. Although the internal structure of the movement mechanism of the formation of the pile layer 49 is not shown, a drive unit formed by a mechanism of the spherical screw type or a mechanism the cam type driven by its own drive motor or by the drive motor Mo of the loom is provided in the mechanism 49 of the movement of the formation of the pile layer. When such a drive unit is activated, a drive lever 51 mounted on a drive shaft 50 which is connected to the drive unit is rotated alternately.
    The operation of the drive motor of the loom Mo is controlled by a controller of the loom Cd which is connected to a rotary encoder 52 which detects the angular position of the main shaft of the loom. The controller of the loom Cd and the second controller of the unwinding of the chain C2 are connected to a weave controller 53 in which the weave of the layer of pile or pile is adjusted. The weave controller 53 sends weave weave information from the pile layer to the weaving machine controller Cd and also to the second chain wrap controller C2 at a predetermined angular position of the weaving loom in each cycle. insertion of the frame. Therefore, the controller of the loom Cd controls the operation of the mechanism 49 of the movement of the formation of the pile layer based on the weave information that is sent by the armor controller 53. furthermore, the second chain unwinding controller C2 controls the operation of the chain unwinding motor Mp based on the weave layer weave information that is sent by the weave controller 53i.
    The driving lever 51 transmits the alternating pivoting movement to the intermediate lever 47 via a rod 55 which is connected to an arm 54 of the intermediate lever 47. The intermediate lever 47 transmits the oscillating movement (or the movement of the formation of the sponge fabric armor) with the tensioning roller 3 and with the roller 20 of the formation movement of the sponge weave via the rod 45 which is connected to the other arm 56 of the intermediate lever 47. The extension bar 6 which guides a woven fabric W at the front of the loom is supported by the upper end of the swing lever 58 which is rotatably supported by the shaft 57. The lower end of the swing lever 58 is connected to the other arm 56 of the intermediate lever 47 via the rod 59.
    Therefore, the alternating pivoting movement of the intermediate lever 47 causes the oscillating lever 58 to oscillate via the rod 59 to thereby transmit to the extension bar 6 the formation motion of the terry cloth weave in the same direction as the tensioning roll 3 and the roll 20 of the movement of the formation of the weave of terry cloth. The formation movement of the terry cloth weave based on the velvet layer training weave pattern causes the tensioner roll 3, the spool 20 of the weave armor formation movement and the extension bar 6 oscillate forward of the loom or back as shown in Figure 1 during the loose insertion of the weft in the weaving operation of the velvet layer to thereby move the line to the position indicated by the dotted line in FIG. 1. The formation movement of the terry cloth weave based on the weave weave of the pile layer also ensures that the tensioning roller 3, the roll 20 of the sponge weave forming motion and the extension bar 6 oscillate towards the rear of the weaving loom or to the left in FIG. 1 during the rapid insertion of the weave weft and during the weaving of the selvedge in the operation of weaving the velvet layer to thereby move the draw line W1 to the position indicated by the solid line in Figure 1.
    Hereinafter, the operation of the yarn tension adjusting device 19 according to the first embodiment will be described. The threads of the pile chain Tp which are unwound from the warp of the pile chain 17 pass around the guide roller 18, then move past the guide surface 35 of the fixed bar 28 in contact with it. and then move past the leaf spring 26 in contact with the surface of the distal end 34 of the leaf spring 26. In the region of the leaf spring 26, adjacent to the center X in which tension is exerted When the pile springs Tp are raised, the leaf spring 26 comes into contact with the two second guide plates 24 having a large radius of curvature at an earlier time. Thus, a relatively large spring load of the first portion L1 is exerted on the threads of the pile chain Tp in the above-mentioned central zone of the leaf spring 26. Furthermore, in the regions of the leaf spring 26 adjacent to the Y1 and Y2 ends in which there is low tension of the pile warp yarns, the leaf spring 26 contacts the first four guide plates 24 having small radii of curvature at a later point in time. . Thus, a relatively small spring load of the second portion L2 is exerted on the threads of the pile chain Tp in the zones of the leaf spring 26 adjacent to the ends Y1 and Y2.
    That is, the leaf spring 26 is not deformed to a large extent in the area adjacent the center X, so that the distal end 34 of the leaf spring 26 extends in a straight line across the width. of the loom. Consequently, there is a minimal variation in the running path of the threads of the pile chain Tp between the fixed bar 28 and the leaf springs 26, so that no winding of the threads is encountered. of the pile chain Tp and / or no entanglement between adjacent threads of the pile chain Tp. Thus, the threads of the pile chain Tp are held under a constant uniform tension without affecting the sensitivity of the variation to the tension of the warp thread. The deformation of the leaf spring 26 gives rise to a predetermined tension exerted on the threads of the pile chain Tp, while absorbing the variation of the tension of the warp thread.
    After passing in front of the leaf spring 26, the pile warp threads Tp are guided by the spool of the sponge armor formation movement movement 20 and move in the direction of the draw line of the W1 picks. crossing the rails 4 and the flapper comb 5.
    The first embodiment of the present invention described above has the following advantageous effects: (1) in the present embodiment, in which the deformation of the leaf spring 26 in the direction of the loom is prevented due to the variation of the tension of the threads of the pile chain Tp, the leaf spring 26 comes into mechanical contact with the threads of the pile chain Tp over the entire width of the loom, so that the tension variations threads of the pile chain Tp are sufficiently absorbed and the threads of the pile chain Tp have a stable tension; (2) in the present embodiment in which the threads of the pile chain Tp come into stable contact with the guide roller 18, with the fixed bar 28 and with the distal end 34 of the leaf spring 26, the tension of the threads of the pile chain Tp is exerted uniformly over the entire width, so that damage to the leaf spring 26 which is due to any concentration of the tension of the threads of the warp is prevented; hair on any part of the leaf spring 26; (3) prevents malfunction of the wire breaker blade which detects breakage of any wire of the pile chain due to extreme fall of the pile cord tension at the Y1 end or Y2.
    Hereinafter, the tension adjustment device of the yarn chain 19 of the loom for making a pile fabric according to the second embodiment of the present invention will be described with reference to FIGS. and 6. In the description of the second embodiment, like reference numerals designate parts or elements identical to those used in the description of the first embodiment, so that the detailed description of said parts or elements will be omitted. As shown in FIG. 5, the yarn tension adjuster 60 of the second embodiment includes a spacer 23, four first guide plates 61A (only one shown), two second guide plates 61B ( only one shown), two auxiliary leaf springs 62, a buffer member 63, the leaf spring 26, the threaded bar 27 and the fixed bar 28. The bolt 36 is inserted through the holes (not shown) of the horizontal portion 32, of the spacer 23, first and second guide plates 61A, 61B, auxiliary leaf springs 62, member 63 acting as buffer and leaf spring 26, before being clamped by screwing in the threaded bar 27.
    The first and second guide plates 61A and 61B have the same configuration. Each of the first and second guide plates 61A and 61B consists of a rigid member and is curved with a predetermined radius of curvature so that their convex surface is oriented towards the leaf spring 26. The length of each first and second guide plates 61A and 61B in the front-rear direction of the loom is smaller than that of the leaf spring 26. As can be seen in FIG. 6, the two second guide plates 61B are arranged in an adjacent position at the center X and two of the first four guide plates 61A are disposed adjacent to the end Y1, the two other plates among the four second guide plates 61B being disposed adjacent the end Y2.
    The auxiliary blade springs 62 are interposed between the leaf spring 26 and the respective second guide plates 61B. The length of the auxiliary blade spring 62 is less, in the front-to-back direction of the loom, than that of the leaf spring 26. The auxiliary leaf springs 62 serve as the second leaf spring of the present invention. The member 63 serving as a buffer is interposed between each auxiliary leaf spring 62 and the leaf spring 26. The member 63 acting as a buffer consists of a sheet or a felt Teflon (trademark) . An auxiliary spacer 64 is disposed between each first guide plate 61A and the spacer 23. Thus, the free space between the leaf spring 26 and each first guide plate 61A is identical to that provided between the leaf spring auxiliary 62 and each second guide plate 61B.
    When the threads of the pile chain Tp are placed on the device for adjusting the thread tension of the pile chain 60, the tension exerted by the threads of the pile chain Tp is applied to the adjustment device of the pile chain. tension of the pile chain threads 60, and the leaf spring 26 and the auxiliary leaf spring 62 are subjected to elastic deformation as indicated by the double-line warp line in FIG. Tp pile chain are subjected to a high tension at the position adjacent the center X, the spring load or the spring constant which has increased due to the compression of the leaf spring 26 and the auxiliary leaf spring 62 prevents a excessive deformation of the leaf spring 26 in the area adjacent to the center X. The regions adjacent to the ends Y1 and Y2 in which the tension of the threads of the pile chain Tp is lower than that which is exerted in the zone adja in the center X, undergo, to an appropriate extent, an elastic deformation due to the spring load of the leaf spring 26 only.
    Therefore, the distal end 34 of the leaf spring 26 extends in a straight line across the entire width and the sensitivity to the variation of tension of the threads of the pile chain Tp is maintained. Thus, the second embodiment essentially has the same effect as that of the first embodiment. The buffer member 63 serves to prevent abrasion between the leaf spring 26 and the auxiliary leaf spring 62 due to vibrations of the loom.
    The present invention has been described in the context of the first and second embodiments, but is not limited to these embodiments. It is clear that in the eyes of those skilled in the art the invention can be implemented in different ways, as illustrated below by way of example.
    Although in the first and second embodiments each of the first and second guide plates 24, 25, 61A, 61B has an arcuate surface, said plates may have a combination of an arcuate surface and a flat surface, or still possess a curved surface whose radius of curvature varies.
    In the first embodiment, the first and second guide plates 24 and 25 may be provided in combination with the auxiliary blade springs 62 of the second embodiment.
    This modification is suitable for a case in which the radii of curvature of the first and second guide plates 24 and 25 can not be modified to meet the requirements of the specifications of the threads of the pile chain Tp or for a case in which the first and second guiding plates 24 and 25 must have extremely small radii of curvature because of the installation environment of the pile chain tension control device 19 in the loom.
    Although the length of the second guide plate 25 is less in the forward-to-back direction of the loom than that of the first guide plate 24, the length of the second guide plate 25 may be longer in the forward direction rear of the loom to that of the first guide plate 24.
    Although the first and second guide plates 24 and 25 of the first embodiment (or the first and second guide plates 61A and 61B of the second embodiment) are located at six different positions across the width of the loom, they could be located at different positions, other than the six positions depending on the tension of the threads of the pile chain Tp.
    The first and second guide plates 24 and 25 of the first embodiment (or the first and second guide plates 61A and 61B of the second embodiment) can be connected to each other to form a single guide plate which extends continuously over the entire width of the loom. Such a single guide plate can be machined or folded to fit the space between the guide plate and the leaf spring 26.
    权利要求:
    Claims (5)
    [1]
    A loom for making a pile fabric, comprising: a lower warp beam (1); a warp of the pile chain (17) having a thread sheet of the pile chain (Tp); and a pile chain tension adjuster (19, 60) having a first leaf spring (26) and a guide plate (24, 25, 61A, 61B), the first leaf spring (26) being constituted by a single elastic member which extends over the width of the loom for making a pile fabric, the guide plate (24, 25, 61A, 61B) being made with the aid of a rigid member spaced from the first leaf spring (26) in the direction in which the first leaf spring (26) moves when it is subjected to elastic deformation under the influence of the tension exerted by the leaf yarn of the pile chain (Tp), the sheet of the threads of the pile chain (Tp) unrolled from the warp of the pile chain (17) being guided in the direction of the pick-up line (Wl) d a woven fabric (W) via the pile chain tension adjuster (19, 60) and via a roller (20) of the movement of the pile chain a formation of terry cloth weave; the device for adjusting the pile chain tension (19, 60) of the loom for making a pile fabric being characterized in that since the sheet tension of the yarns of the pile chain (Tp) is exerted on the first leaf spring (26), the first leaf spring (26) has a spring constant in the area adjacent the center (X) of the leaf width of the warp yarns. hair (Tp) greater than that prevailing in the regions adjacent to the ends (Y1, Y2) of the width of the sheet of the yarns of the pile chain (Tp).
    [2]
    2. Device for adjusting the tension of the pile chain (19) according to claim 1, characterized in that the first leaf spring (26) is less spaced, in the area adjacent to the center (X) of the width of the pile. the sheet of the pile warp threads (Tp), the guide plate (24, 25) only in the areas adjacent to the ends (Y1, Y2) of the sheet width of the pile warp threads (Tp) ) in the direction of movement of the first leaf spring (26).
    [3]
    Hair cord tension adjusting device (19) according to claim 1, characterized in that the surface of the guide plate (24, 25) which is oriented towards the first leaf spring (26) is curve, the surface of the guide plate 25 which is oriented towards the area of the first leaf spring (26) adjacent to the center (X) of the width of the sheet of the pile string (Tp) having a radius of curvature greater than that of the surface of the guide plate 24 which is oriented towards the areas adjacent to the ends (Y1, Y2) of the width of the sheet of the son of the pile chain (Tp).
    [4]
    4. Device for adjusting the tension of the pile chain (19, 60) according to any one of claims 1 to 3, characterized in that a second leaf spring (62) is interposed between the area of the first spring with a blade (26) adjacent to the center (X) of the width of the sheet of the pile warp threads (Tp) and the guide plate (24, 25, 61A, 61B).
    [5]
    5. Hair chain tension adjusting device (60) according to claim 4, characterized in that a member (63) acting as a buffer is interposed between the second leaf spring (62) and the first spring with blade (26). !
    类似技术:
    公开号 | 公开日 | 专利标题
    BE1020813A3|2014-05-06|DEVICE FOR ADJUSTING THE STRENGTH OF THE HAIR CHAIN OF A WEAVING MACHINE FOR A DARK STRETCH.
    BE1017580A3|2009-01-13|DEVICE FOR FORMATION OF THE CROWD USING EDGE THREADS IN A WEAVING MACHINE.
    FR2752246A1|1998-02-13|METHOD AND DEVICE FOR SELECTING THE MOVABLE HOOKS OF A CROWD TRAINING MECHANISM AND JACQUARD TYPE Loom
    FR2606429A1|1988-05-13|FRAME WIRE BRAKE WITH ADJUSTABLE BRAKE INTENSITY
    FR2637618A1|1990-04-13|DEVICE FOR TIGHTENING CHAIN THREADS IN A WEAVING MATERIAL
    EP0802994B1|1998-12-09|Weaving loom
    FR2535351A1|1984-05-04|DEVICE EQUIPPED WITH A WEAVING MACHINE WITHOUT A SHUTTLE, FOR FORMING A SHAFT ON A FABRIC
    CH646736A5|1984-12-14|DEVICE FOR CONTROLLING THE CARRIER FRAMES OF A WEAVING MACHINE.
    FR2463216A1|1981-02-20|Loom warp tensioner - has spring unit to act on warp support rods
    BE1019326A3|2012-06-05|WEAVING MACHINE HAVING MULTICOLOR FRAME INSERTION DEVICE.
    EP0084471B1|1985-04-17|High-speed shuttleless loom
    FR2546918A1|1984-12-07|FORCE ACTUATING DEVICE OF THE INSERTION MECHANISM OF FRAME WIRE INSERTION MECHANISMS IN NON-SHUTTLE WEAVING MACHINES
    FR2476696A1|1981-08-28|LOOM
    FR2470174A1|1981-05-29|DEVICE FOR THE REVERSE DEVICE FOR INCREASING THE DENSITY OF THE FRAME IN FABRICS OF THE BED TYPE
    EP1870503B1|2009-07-22|Device for straightening the weft of a fabric for a textile machine by means of needle wheels
    FR2567925A1|1986-01-24|Device for a yarn-carrier assembly capable of functioning as a damper in operating phases of the loom and as a blocking means in stopping phases of the loom
    FR3105270A1|2021-06-25|Velvet loom
    FR3105271A1|2021-06-25|Velvet loom
    CH653715A5|1986-01-15|MECHANISM FOR TRANSFORMATION OF SHUTTLE MACHINES INTO SHUTTLE - FREE WOVEN MATERIAL.
    FR2505887A1|1982-11-19|Textile loom with automatic servo-control mechanism - for controlling position of breast beam
    BE502888A|
    CH577575A5|1976-07-15|Rapier loom - in which weft threads are carried on vertical flexible tapes with reed and finger supports
    FR2639366A1|1990-05-25|Weaving loom equipped with a tension regulator for a roll for paying out or winding on a textile web
    FR2553106A1|1985-04-12|DEVICE FOR MANUFACTURING A TISSUE EDGE WITH REINFORCEMENT
    BE492000A|
    同族专利:
    公开号 | 公开日
    JP2012246582A|2012-12-13|
    CN102797102A|2012-11-28|
    CN102797102B|2014-03-05|
    JP5464172B2|2014-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1154057A2|2000-05-12|2001-11-14|Lindauer Dornier Gesellschaft M.B.H|Terry loom|
    EP1369514A1|2002-06-07|2003-12-10|Tsudakoma Kogyo Kabushiki Kaisha|Pile loom|
    EP2194176A2|2008-12-08|2010-06-09|Kabushiki Kaisha Toyoda Jidoshokki|Pile fabric loom having pile warp tension adjuster|
    BE792485A|1971-12-10|1973-06-08|Sulzer Ag|CHAIN THREAD DEVIATION BAR OF A WEAVING Loom|
    JP2710046B2|1986-12-04|1998-02-10|津田駒工業株式会社|Warp tension control method for pile loom|
    SU1509441A1|1987-12-18|1989-09-23|Чебоксарское специальное конструкторско-технологическое бюро по бесчелночным ткацким станкам|Terry loom|
    JP2987881B2|1990-05-24|1999-12-06|株式会社豊田自動織機製作所|Warp tension applying device in loom|
    JP3377736B2|1997-10-06|2003-02-17|津田駒工業株式会社|Pile warp tension control method for pile loom|
    JP4973142B2|2006-11-17|2012-07-11|株式会社豊田自動織機|Warp tension controller for pile weaving loom|CN105350162B|2015-11-27|2017-05-10|江苏莱纳多智能装备有限公司|Lint fabric woolen yarn tension device|
    BE1026319B1|2018-05-31|2020-01-13|Picanol Nv|Towing device for pile warp threads in a towel weaving machine|
    CN108914337B|2018-08-02|2021-05-25|山东日发纺织机械有限公司|Two-stage buffering positive pile warp let-off mechanism|
    法律状态:
    2018-04-25| MM| Lapsed because of non-payment of the annual fee|Effective date: 20170531 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011118539A|JP5464172B2|2011-05-27|2011-05-27|Pile loom pile warp tension adjuster|
    JP2011118539|2011-05-27|
    [返回顶部]