JP4718248B2 - Ear weaving device - Google Patents

Description

  The present invention relates to an ear weaving device that forms an ear based on the operations of a first ear thread heel and a second ear thread heel that are driven to reciprocate in opposite directions.

  For example, Patent Documents 1 and 2 each show an ear weaving device that forms ears based on the operations of a first ear thread kite and a second ear thread kite that are driven to reciprocate in opposite directions.

  The device of Patent Document 1 is configured to drive a two-dimensional crank mechanism by an electric motor and to reciprocate linearly move a pair of yarn guide elements by driving the two-dimensional crank mechanism. The two-dimensional crank mechanism includes a lever attached to the output shaft of the electric motor and a pair of links connected to both ends of the lever. The pair of links are connected to the pair of thread guide elements on a one-to-one basis. Further, in Patent Document 1, as a configuration in which the adjustment of the opening amount of the ear thread can be mechanically set, a configuration in which the angle range of the link can be adjusted as shown in FIG. 6, and a link as shown in FIG. The structure which can adjust the radial direction length of the crank in is shown.

In the device of Patent Document 2, a power receiving hole is arranged in each of the first band that supports the first ear thread ridge and the second band that supports the second ear thread heel. It is shown that gears rotated by an electric motor mesh with the power receiving holes of the two bands to form a so-called rack and pinion mechanism, and the ear thread opening movement is performed by forward and reverse rotation driving of the electric motor. Has been.
Japanese National Patent Publication No. 10-503563 (FIGS. 2, 6, and 7) JP 2004-308064 A (FIG. 1)

  In the loom, the setting of the opening device such as the standard height of the warp opening device (so-called frame height) and the warp opening amount is changed according to the change of the fabric type, and the same change is necessary for the opening of the ear yarn. Become. On the other hand, according to the configuration of Patent Document 1, it is necessary to set with high accuracy regardless of the configuration of the angular range of the link or the length of the crank in the radial direction, and the workability is also poor. There is.

  On the other hand, since a so-called rack and pinion mechanism is configured in Patent Document 2, in order to change the frame height and the opening amount, the driving motor phase and the driving amount in the operation process (that is, the rotation amount of the motor) are changed. Is required. For this reason, there is a problem that control of the drive motor becomes more complicated or a drive motor having a larger output torque needs to be used, resulting in an increase in size of the entire apparatus.

  The present invention has been made in view of such circumstances, and the first ear thread and the second ear thread, in which the ear weaving device is driven by a dedicated drive motor and reciprocates in opposite directions to each other. To provide an ear weaving device that forms an ear based on the operation of a heel, and that can accurately set the frame height and opening amount of the ear thread opening while suppressing the capacity of the drive motor. is there.

Means / actions / effects to solve the problem

  Therefore, the ear weaving apparatus of the present invention includes a first guide and a second support that have a yarn guide for guiding the ear yarn and whose movement direction is regulated in the direction of opening of the ear yarn, a loom spindle motor, A drive motor that is separately provided and driven to rotate forward and backward, and an output shaft of the drive motor and the first and second supports are connected to rotate the drive motor to the first support. And a device having a motion conversion mechanism for converting the second support into a reciprocating motion.

  The motion conversion mechanism includes a first gear attached to an output shaft of the drive motor, and a first pivotally mounted portion that is meshed with the first gear and spaced apart in the radial direction with respect to the rotation center. A second gear portion, a third gear that is meshed directly or indirectly with the first gear, or a second pivot portion provided on one of the first gears. The second pivot part provided at a position spaced apart from the center of rotation in the radial direction, and one end connected to the first pivot part and the other end coupled to the first support. The gist of the present invention is to include a first connecting rod and a second connecting rod having one end connected to the second pivot portion and the other end connected to the second support.

  In the present invention, the first pivoting portion and the second pivoting portion that are driven by the rotation of the output shaft of the drive motor are so-called crank pins, and the first support in which the movement is restricted in the ear thread opening direction. The body and the second support body are so-called pistons, and each connecting rod for connecting the first pivoting portion and the second pivoting portion to the first support body and the second support body is a so-called crank rod. These form a so-called piston / crank mechanism. The rotation of the drive motor output shaft is transmitted to the first pivoting portion and the second pivoting portion via the first gear and the driven gear constituting the motion conversion mechanism, and the motion of the connecting rods connected respectively. As a result of the conversion into the reciprocating motions of the first support body and the second support body, respectively, the ear thread opening motion that is reciprocated in the opposite directions is performed.

  As in the present invention, by transmitting a motion by meshing a plurality of gears to the motion conversion mechanism, for example, even if the number of ear threads and the tension are increased by changing the fabric specification, the motion conversion By replacing the first gear and the second gear constituting the mechanism with one having an appropriate number of teeth, the ear thread opening motion can be appropriately performed without greatly increasing the driving torque of the motor.

  In addition, when adjusting the reference height and the amount of ear thread opening, which are the ear thread opening conditions, for example, the meshing position (phase) of the first gear that is the driving side and the second gear that has the pivot that is the driven side gear. ) To change the reference height of the ear thread opening, and the first gear that is the driving side and the second gear that is the driven side gear, or the first gear and the third gear By replacing one of the gears with a gear having a different gear ratio, it is possible to set an opening amount of the ear thread different from the other, and accurately set the operating conditions for the ear weaving device to the desired state. it can. The reference height of the ear thread opening here is a relative distance from the reference end surface such as the upper end surface of the loom frame with respect to the position of the yarn guide in the closed ear thread state. This is the relative distance between the two yarn guides in the yarn opening state.

  In the present invention, it is preferable that the second pivot part is provided on the first gear, and the first pivot part and the second pivot part pass through the rotation center of the corresponding gear. And each is provided on the same side in the weaving width direction with respect to a virtual straight line parallel to the ear thread opening direction. Thereby, the rotation direction of the second gear is reversed with respect to the rotation direction of the first gear. Accordingly, the movement directions of the first pivot portion and the second pivot portion are opposite to each other, and the two thread holders can be driven to reciprocate in opposite directions. In addition, since the total number of gears driven by the drive motor can be reduced, the load on the drive motor is reduced, resulting in energy saving.

  In the present invention, it is preferable that the second pivot part is provided on the third gear, and the first pivot part and the second pivot part have a rotation center of the corresponding gear. It is provided on the opposite side in the weaving width direction with respect to a virtual straight line passing through and parallel to the direction of opening of the ear thread. When the third gear is directly meshed with the first gear, the rotation directions of the second gear and the third gear are reversed with respect to the rotation direction of the first gear. Accordingly, since the movement directions of the first pivot part and the second pivot part are the same, the two thread holders can be driven back and forth in opposite directions.

  When the second pivoting portion is provided on the third gear side, more specifically, the rotation center of the second gear and the third gear is at the outer peripheral end of the first gear. What is necessary is just to provide so that it may be located in the area | region defined by two tangents regarding the said 1st gearwheel which is a tangent and parallel to an ear thread opening direction.

  Alternatively, the rotation center of the second gear and the third gear has an intersection angle of ± 45 degrees with respect to an imaginary straight line that passes through the rotation center of the first gear and is parallel to the ear thread opening direction. And a region defined by two imaginary straight lines that pass through the rotation center of the first gear, and may be provided within a region that includes the imaginary straight line that passes through the rotation center of the first gear. .

  Alternatively, the second gear and the third gear are arranged so that an imaginary straight line passing through the center of rotation of both gears intersects the ear thread opening direction, and the first pivot portion and the second pivot portion are arranged. What is necessary is just to provide an attaching part so that it may be located in the area | region defined by two virtual straight lines which pass through the rotation center of each gearwheel and are parallel to the ear thread opening direction.

  The relative positions of the first pivot part and the second pivot part are mutually adjusted by bringing the rotation center position of each gear having the pivot part close to each other in a virtual linear direction orthogonal to the ear thread opening direction. You can get closer. Thus, the connecting rod at the time of driving is provided by providing a gear or a pivot part so that the relative positions of the first pivot part and the second pivot part are close to each other indirectly or directly. Therefore, the rotational movement of the gear can be converted into the reciprocating movement of the support more efficiently. In this technique, each gear is arranged so that a virtual straight line connecting the rotation centers of the second and third gears intersects a virtual straight line extending in the direction of the ear thread opening, or two gears having the pivot portion It is conceivable that the second and third gears, which are driven gears, are arranged so that the respective rotation centers are located on the same line extending in the ear thread opening direction.

  In the present invention, it is preferable that a fourth gear is attached to the output shaft of the drive motor in addition to the first gear, and the third gear meshes with the fourth gear. . As a result, the gear ratios of the first gear and the second gear which are the drive system of the first support, and the fourth gear and the third gear which are the drive system of the other second support are obtained. It becomes possible to set for each support, and a different opening amount can be set for each support. Accordingly, the ear weaving apparatus can be set with higher accuracy in accordance with the change of the fabric specification, and the quality of the ear tissue is further improved.

  In the present invention, it is preferable that the ear weaving device has at least one of the first gear, the second gear, and the third gear at a rotational center position with respect to the rotational center of the gear to be engaged. The position can be adjusted. As a result, the types of gears that can be assembled (in other words, types of gears having different numbers of teeth and different outer diameters) are increased, and the ear thread opening can be set with higher accuracy, so that the quality of the ear tissue can be further improved. .

  A specific embodiment of the loom ear weaving apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 to FIG. 4 specifically show an ear weaving device 1 that is arranged on both sides of the end of the woven fabric 4 and performs the opening movement of the ear thread 3. The ear thread 3 is pulled out via an ear thread bobbin, a tensioner, a guide guide, and the like (not shown) arranged on the loom, and the tip of the ear thread 3 is a thread guide 32 that constitutes the ear weaving apparatus 1 according to the present invention. It passes through, further passes through the reed 5, reaches the front of the weave, and continues to the woven fabric 4. In the illustrated example, the ear weaving device disposed on the right side as viewed from the front of the loom is shown as an example, but the left and right symmetrical ear weaving device 1 is similarly disposed on the left side, for example. ing.

  Roughly speaking, the ear weaving device 1 roughly includes a first support 20 and a second support 21 having a thread guide 32 through which an ear thread 3 is passed, a pulse motor 33 which is a drive motor, and the drive. And a motion conversion mechanism that converts the rotational motion of the motor into reciprocating motion. Each member listed above is attached to a base plate 10 that substantially functions as an attachment base of the ear weaving device.

  As shown in FIGS. 1 to 2, the base plate 10 is composed of a plate-like member and is disposed so as to extend along the ear thread opening direction and the weaving width direction. The base plate 10 is provided with holder blocks 12 and 13 that function as attachment portions to the loom frame side and a pulse motor 33 as a drive motor on the front side when viewed from the front side of the weave, while the above-mentioned is provided on the back side. A holder bracket 30 that functions as a support member for receiving the first support body 20 and the second support body 21 and a plurality of gears 35, 36, and 37 that constitute a motion conversion mechanism are disposed.

  Roughly speaking, the first support body 20 and the second support body 21 are each provided with a plurality of healds 22 each having a thread guide 32 for inserting the ear thread 3, and at the upper end position and the lower end position of each heald 22 respectively. The carrier rods 23 and 24 and the carrier rods 25 and 26 that are arranged to support the healds 22 are formed to extend in the direction of opening of the ear thread, and two paired carrier rods are connected at both ends in the extending direction. Each has slide guides 28A and 28B.

  The carrier rods 23 and 24 and the carrier rods 25 and 26 have attachment portions for screwing the corresponding slide guides 28A and slide guides 28B, and also have extension portions extending in the weaving width direction. At the end in the extending direction to the woven fabric side, holes provided in the upper end portion and the lower end portion of the heald 22 are inserted into the heald frame portion for holding the heald 22 while The carrier rods 23 and 24 and the carrier rods 25 and 26 located above the carrier rods 23 and 24 and the carrier rods 25 and 26 are provided with connecting holes for connecting a connecting rod 51A and a connecting rod 51B described later. Configure the connecting part.

  On the other hand, slide rods 29A, 29B, and 29C extending in parallel along the ear thread opening direction are arranged on both side surfaces of the slide guides 28A and 28B. More specifically, as shown in FIG. 3, the slide rods 29A, 29B, and 29C are made of, for example, a round bar member, and the extending direction thereof coincides with the ear thread opening direction and is mutually in the weaving width direction. Arranged at intervals. In the slide guides 28A and 28B, sliding portions that are recessed in a semicircular cross section with respect to the adjacent slide rods are formed extending along the extending direction of the slide rods. The sliding portions of the slide guides 28A and 28B are disposed between the slide rods 29A and 29B and the slide rods 29B and 29C so as to be slidable therebetween, whereby the first support body 20 and the second support member 20B. The moving direction of the support 21 is restricted to the extending direction of the slide guides 28A and 28B, that is, the ear thread opening direction.

  The slide rods 29 </ b> A, 29 </ b> B, and 29 </ b> C are respectively accommodated in a holder bracket 30 and a holder bracket 31 that are attached to the base plate 10. Although not shown, the holder bracket 31 is assembled to the loom frame more stably by being attached to a stay (not shown) constructed between the loom frames, like the steady rest 9.

  The pulse motor 33 is attached by screwing bolts 15 into a plurality of screw holes 17 provided in the base plate 10. On the back side of the base plate 10, an output shaft 34 of the pulse motor 33 extends from the front side and protrudes from the back side. The output shaft 34 has a predetermined number of tooth surfaces formed on the outer periphery thereof. A gear 35 that functions as the first gear is attached from the back side, and the gear 35 is fixed by being tightened so that it cannot move relative to the output shaft 34 by the hexagon socket head bolt 19 disposed on the base shaft portion. Is done. On the other hand, the two support shafts 40A and 40B arranged with a predetermined inter-axis distance with respect to the output shaft 34 are both formed with a predetermined number of tooth surfaces on the outer periphery, and the second gear. In addition, a gear 36 and a gear 37 that function as a third gear are attached to be engaged with the gear 35.

  The attachment of the support shafts 40A and 40B and the gears 36 and 37 to the base plate 10 will be described more specifically with reference to FIG. The support shafts 40A and 40B have a base 40, a small-diameter portion 42 having a smaller diameter in the axial half of the base 40, a smaller diameter than the base 40 in the other half, and a screw portion 41 on the outer periphery thereof. Form. On the back side of the base plate 10, screw holes 18A and 18B are provided at positions spaced apart from the output shaft 34 by a predetermined inter-axis distance, and the support shafts 40A and 40B are screw holes 41 corresponding to the screw holes 41A and 40B. By being screwed into 18 </ b> A and 18 </ b> B, an integral support shaft is configured with respect to the base plate 10.

  On the other hand, on the inner peripheral side of the rotation center of the gears 36 and 37, a step portion formed by changing the inner diameter of the through hole penetrating the rotation center in the diameter increasing direction is provided. The bearing member 46 is inserted so as to come into contact with the portion. The gears 36 and 37 are removed from the gear by a retaining ring 47 inserted into an annular groove formed in the inner peripheral portion of the rotation center of the gear with the bearing member 46 disposed therein. It is fastened so that there is no. Further, the inner ring portion of the bearing member 46 is fitted to the small-diameter portion 42 of the support shafts 40A and 40B so that the gears 36 and 37 are rotatably received with respect to the support shafts 40A and 40B. The support shafts 40A and 40B are formed with a retaining annular groove 43 so that the gear 36 and the gear 37 do not come off from the corresponding support shafts 40A and 40B by the retaining ring 44 inserted therein. Has been.

  On the other hand, arms 48A and 48B are attached to the shaft ends of the gears 36 and 37, respectively. The arms 48A and 48B are formed with round holes serving as work spaces for attaching and detaching the retaining rings 44, while the arm portions extending radially away from the center thereof have connecting rods 51A and 51A described later. A hole for connection with 51B is formed. Each of the arms 48A and 48B has an imaginary straight line L2 and L3 passing through the outer peripheral end of the gear 35 and parallel to the ear thread opening direction so as to share the center with the rotation center of the gears 36 and 37 at the attachment destinations. Among these, the corresponding first pivotally attached portion 53A and second pivotally attached portion 53B are fixed by a plurality of bolts 49 so as to be located opposite to each other, that is, outside. As a result, the gears 36 and 37 are integrally provided with the first and second pivot portions 53A and 53B at positions spaced radially from the center of the gears 36 and 37, respectively. Yes.

  The arms 48A and 48B are connected to one ends of connecting rods 51A and 51B having pivoting holes formed at both ends thereof. More specifically, the connecting pins 52A and 52B functioning as pivots are inserted into the pivotal mounting holes provided at one ends of the coupling rods 51A and 51B and the pivotal mounting holes provided in the arms 48A and 48B. The pivots 53A and 53B of the arms 48A and 48B are configured.

  On the other hand, the other ends of the connecting rods 51A and 51B are connected to pivot mounting holes of the carrier rods 23 and 25, respectively. More specifically, connecting pins 39A and 39B that function as pivots are inserted into the pivot mounting holes provided at the other ends of the coupling rods 51A and 51B and the pivot mounting holes of the carrier rods 23 and 25, respectively. The pivot parts 27A and 27B in the first support 20 and the second support 21 are configured.

  Thus, in the above-described embodiment, the two supports having the thread guide 32 for guiding the ear thread 3 and whose movement direction is regulated in the opening direction of the ear thread are the heald 22, the carrier rods 23 and 24, and the slide. The first support 20 composed of the guide 28A and the second support 21 composed of the heald 22, the carrier rods 25 and 26, and the slide guide 28B correspond to the first support 20 and are provided separately from the loom main shaft motor and rotate forward and backward. The drive motor to be driven corresponds to the pulse motor 33.

  The motion conversion mechanism that converts the rotational motion of the drive motor into the reciprocating motion of each of the supports is a gear 35 that functions as a first gear and a second gear that is directly meshed with the first gear. The first gear is directly meshed with the first gear and the gear 36 functioning as a gear, and the first pivotally mounted portion 53A provided in the gear 36 at a position spaced radially from the rotation center of the gear 36. A gear 37 functioning as a third gear, a second pivoting portion 53B provided in the gear 37 at a position spaced radially from the rotation center of the gear 37, and one end of the first pivoting portion 53A And the other end is connected to the second pivoting portion 53B and the other end is connected to the first support rod 51A. A second connecting rod connected to the second support; Mechanism composed of the connecting rod 51B as de corresponding thereto.

  In the loom ear weaving apparatus, the pulse motor 33 rotates the output shaft 34 alternately by a predetermined amount in the forward rotation direction and the reverse rotation direction every time the main shaft (crankshaft) of the loom rotates several times. The forward / reverse rotation of the output shaft 34 is caused by the motion conversion mechanism, more specifically, through the first gear 35 attached to the output shaft 34 to the second gear 36 and the third gear 37 that mesh with the first gear 35. Further, the swinging motion of the first pivotal portion 53A and the second pivotal portion 53B of the gears 36 and 37 is transmitted through the coupling rod 51A and the coupling rod 51B coupled thereto. It is transmitted to the support 20 and the second support 21 as a reciprocating motion. Since the movement direction of the first support body 20 and the second support body 21 connected to the connecting rods 51A and 51B is restricted to the ear thread opening direction, the rotation of the output shaft of the pulse motor 33 is It is converted into a reciprocating motion of the first support 20 and the second support 21.

  Note that the pulse motor 33 is formed of a stepping motor having a step angle of several degrees in angle, for example, or a known motor capable of controlling the rotation amount. The pulse motor 33 counts, for example, a timing signal generated when the main shaft of the loom passes a predetermined angle, and the amount of rotation for driving the pulse motor 33 in the forward rotation direction or the reverse rotation direction according to the count number. Connected to a control circuit (not shown) that alternately generates command pulses, the pulse motor 33 is driven in response to a command from such a control circuit.

  In FIG. 2, the movement ranges of the first pivot portion 53A and the second pivot portion 53B that accompany the forward / reverse rotation of the output shaft 34 are denoted by reference numerals P1 to P3 and Q1 to Q3, respectively. It is shown. In the illustrated example, it is shown that the movement range angle θ1 of the first pivotal portion 53A accompanying the rotational drive of the pulse motor 33 is approximately 90 °, and the first pivotal portion 53A is denoted by reference signs P1, P2. The positions of the yarn guide 32 when moved to the respective positions P1 and P3 are shown with respective symbols S1, S2 and S3. The position S1 of the thread guide 32 corresponds to an intermediate position of a so-called ear thread opening process, corresponds to a so-called reference height of the ear thread opening, and the distance between the position S2 and the position S3 of the thread guide 32 is This corresponds to the so-called ear thread opening.

  In the ear weaving apparatus 1 of the loom, the ear thread opening state is reversed every several rotations of the loom. On the other hand, on the loom, the woven fabric 4 is woven by inserting the weft into the weft runway formed by the warp opening motion and executing the beating motion, and the knitted fabric 4 is woven by the ear yarn 3 and the weft. The tissue is woven at both ends of the woven fabric 4.

  Such an ear weaving device 1 may be located at a position where there is no hindrance to the weft flying with respect to the mounting position in the warp running direction. In the illustrated example, in order to make the opening amount of the ear thread as small as possible, it is arranged in front of the position of the first warp frame 7 in the foremost row when viewed from the front of the loom. It is also possible to position it behind.

  Such an ear weaving apparatus 1 can be adjusted in position in the weaving width direction in response to the specification change of the woven fabric. The base plate 10 constituting the ear weaving device 1 is attached to a steady rest 9 laid on a pair of left and right loom frames (not shown) via holder blocks 12 and 13. More specifically, the holder blocks 12 and 13 are arranged so that the steady rest 9 is sandwiched from above and below. The holder blocks 12 and 13 are fixed to the front surface of the base plate 10 via bolts 15, while the holder block 12 is formed with a screw hole provided toward the steady rest 9 and screwed into the holder block 12. The bolt 14 is fixed to the steady rest 9. As a result, the operator can loosen the bolt 14 as necessary, and move the base plate 10, that is, the ear weaving device 1, along the steady rest 9 to a position corresponding to the width of the woven fabric 4. The ear weaving device 1 can be adjusted in position in the weaving width direction.

  In the above-described embodiment, the first support body 20 in which the driven gear having the so-called first pivot portion 53A and the second pivot portion 53B serves as a crank pin and its movement is restricted only in the direction of the ear thread opening. In addition, the second support 21 serves as a piston, and the connecting rod 51A and the connection connecting the first support 53A and the second support 53B to the first support 20 and the second support 21, respectively. Each of the rods 51B corresponds as a crank rod, which constitutes a so-called piston / crank mechanism, and the rotation of the drive motor is transmitted to the gears 36 and 37, which are the driven gears, via the first gear 35. Thus, by converting the first support 20 and the second support 21 into the reciprocating motion, the first ear thread scissors and the second ear thread scissors reciprocate in opposite directions. Selvage shedding motion is performed is moving.

  According to the present invention, the ear thread is shifted by shifting the meshing position (phase) of the gear 35 as the first gear on the driving side and the gear 36 as the second gear having the pivot on the driven side. The reference height of the opening can be changed. More specifically, by loosening the hexagon socket head bolt 19 that holds the gear 35, the gear 35 is moved from the output shaft 34 to the shaft end side to release the meshing of the two gears, and the meshing phase. Can be shifted.

  Further, the opening amount of the ear thread is changed by replacing the first gear as the driving side and the second gear as the driven side gear, and the first gear and the third gear with gears having different gear ratios. Can do. More specifically, in order to replace the gear 35 as the first gear, it is possible to detach it from the output shaft 34 by the above-described method, and to change the gears 36 and 37 functioning as the second and third gears. In the case of replacement, by removing the retaining ring 44 for retaining, the gears 36 and 37 can be detached from the support shafts 40A and 40B while the bearing member 46 is mounted on the gear.

  Further, when it is necessary to increase the number of ear threads or the number of ear threads by changing the fabric specifications, for example, the transmission gear ratio between the gear 35 and the gear 36 and the gear 37 is increased in response to the increase in the ear thread tension. Therefore, it is possible to replace the gear with a gear having an appropriate number of teeth by the above method. In this way, the operating conditions for the ear weaving device can be accurately set to a desired state.

  Modifications can be considered for the first embodiment described above. In addition, about the drawing shown below, what is functionally substantially the same as the drawing demonstrated above is attached | subjected the same code | symbol below, and the detailed description is abbreviate | omitted.

  In the first embodiment described above, one gear is used as the drive-side gear that transmits the rotation of the output shaft 34 of the drive motor to the driven gear 36 (second gear) and the gear 37 (third gear). 35 (first gear) is used, but instead of this, a plurality of gears may be provided to transmit each drive system individually.

  In the embodiment shown in FIG. 5, a gear 55 functioning as a fourth gear, in addition to the gear 35 as the first gear, extends in the axial direction of the output shaft 34 of the drive motor from the gear 35. The output shaft 34 is coaxially provided. Further, the gear 37 as the third gear is provided so as to be pivotally supported relative to the gear 36 at the rotation center common to the gear 36 functioning as the second gear. The gear 35 as the first gear meshes with the gear 36 as the second gear, and the gear 55 as the fourth gear meshes with the gear 37 as the third gear.

  Further, in this embodiment, the first pivot part 53A and the second pivot part 53B pass through the rotation centers 36a and 37a of the corresponding gears 36 and 37 and are parallel to the ear thread opening direction. The rotation centers 36a and 37a of the gear 36 and the gear 37 are tangent to the outer peripheral end of the gear 35 and are in the direction of the ear thread opening. (In the example shown, the rotation centers 36a, 37a of the gears 36, 37 pass through the rotation center 35a of the gear 35). Further, the gear 36 and the gear 37 are provided so as to be on the same line as the virtual straight line L2 parallel to the ear thread opening direction.

  In the illustrated example, the gears 35 and 55 and the gears 36 and 37 are shown to have the same diameter and the same number of teeth, but the outer diameter of the gear, that is, the number of teeth is different in each drive system. A configuration in which a gear is combined with the gear is also conceivable. If it does in this way, the momentum of the 1st support body 20 and the 2nd support body 21, ie, an ear thread opening amount, can be set as a different value for every support body.

  Further, in the first embodiment described above, a pulse motor 33 in which a gear 35 as a first gear is attached to the output shaft 34, a gear 36 as a second gear, and a gear 37 as a third gear. The support shafts 40A and 40B to which the motor is attached are provided with their positions fixed with respect to the base plate 10. Instead of this, the output shaft 34 of the pulse motor 33 or the gear 36 functioning as the second and third gears. , At least one of the gears 37 may be configured such that the distance (interaxial distance) between the two can be adjusted with respect to the rotation center of the gear that meshes with the rotation center.

  FIG. 14 shows an example thereof. In the illustrated example, in the configuration of the first embodiment, the base plate 10 is set to the mounting position of the pulse motor 33 and the positions of the support shafts 40A and 40B to the inter-axis distance. It is configured to be adjustable in the changing direction. Specifically, the base plate 10 has a notch 62 formed so as not to interfere over the position adjustment range of the output shaft 34 of the pulse motor 33, while the base plate 10 is positioned in place of the screw hole 17 for fixing the pulse motor 33. An elongated hole 60 extending in the adjustment direction is provided, and the pulse motor 33 is configured such that a gear (not shown) attached to the output shaft 34 is engaged with each other, a bolt 63 inserted into the attaching portion and the elongated hole 60, and the illustrated illustration. The nut is not fastened and assembled to the base plate 10.

  On the other hand, as a configuration for changing the inter-shaft distance on the side of the support shaft 40A and the support shaft 40B, the base plate 10 is meshed instead of providing the screw shafts 18A and 18B for mounting the support shaft 40A and the support shaft 40B. The long holes 61A and 61B are provided so as to be adjustable in position along the center position of the gear. More specifically, as shown in FIG. 15, the support shafts 40A and 40B are formed with screw portions 41 that extend through and protrude through the base plate 10 with respect to the first embodiment, and the support shafts 40A and 40B. The support shafts 40A and 40B are inserted into the long holes 61A and 61B, and the nuts 64 are fastened so that the base plate 10 is sandwiched between the screw portions 41 in a state where the attached gears are engaged with each other. 10 is fixed.

  In the illustrated embodiment, the mounting positions of both the pulse motor 33 and the support shafts 40A and 40B are adjustable. However, the base plate 10 is provided only on the pulse motor 33 side or on the support shafts 40A and 40B side. It is also possible to configure so that the position can be adjusted.

  In the first embodiment, the rotational movement of the output shaft 34 is transmitted via the gear 35 attached thereto in order to rotate the gear 37 having the second pivot portion. The arrangement of the transmission gear may be omitted. More specifically, as shown in FIG. 6, the gear 35 that functions as the first gear is configured to have substantially the same diameter (the number of teeth is substantially the same or close to that of the gear 36 that functions as the second gear). At the same time, the second pivot part 53B may be arranged in a direction away from the rotation center with respect to the gear 35, and the connecting rod 51B may be coupled to the pivot part 53B. According to this, the amount of inertia of the so-called drive system is reduced as the number of gears is reduced, so that the drive torque of the pulse motor 33 can be reduced and energy saving can be achieved.

  In this example, the first pivot part 53A and the second pivot part 53B are respectively connected to virtual straight lines L1 and L0 that pass through the rotation centers 36a and 35a of the corresponding gears and are parallel to the ear thread opening direction. They are provided on the same side in the weaving width direction (that is, on the same side of the both sides in the weaving width direction with the imaginary straight lines L1 and L0 as a boundary, more specifically on the right side in the drawing). Further, a gear 36 is provided so as to be located in a region defined by two tangents L5 and L6 related to the gear 35 that are tangent to the outer peripheral end of the gear 35 and parallel to the direction of the ear thread opening (illustrated). In this example, the rotation center 36a of each gear 36 is collinear with a virtual straight line that passes through the rotation center 35a of the gear 35 and is parallel to the ear thread opening direction).

  In the first embodiment shown in FIGS. 1 and 2, the rotation centers of the gears 36 and 37 and the rotation center of the pulse motor 33 are arranged so as to form a triangular apex. It is also possible to arrange the rotation center position on the same line connecting the rotation center of the gear 36 and the rotation center of the gear 37. More specifically, as shown in FIG. 7, the gear 36 and the gear 37 may be arranged vertically above and below the rotation center of the gear 35 so that the gear 36 and the gear 37 mesh with the gear 35. .

  In the illustrated example, similarly to the example shown in FIG. 5, the first pivoting portion 53 </ b> A and the second pivoting portion 53 </ b> B pass through the rotation centers 36 a and 37 a of the corresponding gears 36 and 37 and the ear threads. The imaginary straight lines L1 and L0 that are parallel to the opening direction are provided opposite to each other in the weaving width direction, that is, outside. Further, the gear 36 and the gear 37 are regions in which the respective rotation centers 36a and 37a are defined by two tangents L5 and L6 related to the gear 35 that are tangent to the outer peripheral end of the gear 35 and parallel to the ear thread opening direction. (In the illustrated example, the rotation centers 36a and 37a of the gears 36 and 37 pass through the rotation center 35a of the gear 35 and are parallel to the ear thread opening direction). On the same line). With such an arrangement, the first pivoting part 53A and the second pivoting part 53B are arranged relatively close to each other.

  Further, with respect to FIG. 7, the gear 36 and the gear 37 can be positioned at a position that is angularly shifted in the outer circumferential direction with respect to the rotation center of the gear 35. More specifically, as shown in FIG. 8, when the gear 36 and the gear 37 are engaged with the gear 35, they are angularly shifted counterclockwise to the angle θ <b> 1 and the angle θ <b> 2 with respect to the rotation center of the gear 35. It may be provided at a different position. However, in the illustrated example, as in the example shown in FIG. 7, the first pivotal portion 53A and the second pivotal portion 53B pass through the rotation centers 36a and 37a of the corresponding gears 36 and 37 and The imaginary straight lines L1 and L0 parallel to the yarn opening direction are provided opposite to each other in the weaving width direction, that is, outside.

  7 and 8, in the gear 36 and the gear 37, the rotation centers 36a and 37a of the gears pass through a rotation center 35a of the gear 35 and a virtual straight line L7 parallel to the ear thread opening direction. On the other hand, in other words, it is an area defined by virtual straight lines L8 and L9 that form an intersecting angle θ3 and pass through the rotation center 35a of the gear 35, and is positioned so as to be located within the area including the virtual straight line L7. You can also That is, in the embodiment shown in FIG. 7, the pulse motor 33 is arranged so that the rotation center of the output shaft 34 is positioned on a straight line connecting the rotation center of the gear 36 and the rotation center of the gear 37. In the embodiment shown in FIG. 8, the virtual straight line L21 passing through the rotational center 35a of the gear 35 and the rotational center 36a of the gear 36 intersects the virtual straight line L7 with an intersecting angle θ1, and the rotational center 35a and the rotational center 37a of the gear 37. Gears 36 and 37 are respectively arranged at positions where the imaginary straight line L22 passing through the imaginary straight line L22 is smaller than the angle θ3 with respect to any of the intersecting angles θ2 made with respect to the imaginary straight line L7. However, as in the embodiment shown in FIG. 8, the rotation center 37 a of the gear 37 and the second pivotal attachment portion 53 </ b> B are positioned so as to sandwich the virtual straight line L <b> 7. The change in the angle of the connecting rod 51B can be made smaller, and the reciprocating motion can be converted more efficiently. Incidentally, the preferred angle for the angle θ3 is 45 degrees.

  In the example shown in FIG. 9, the gear 36 and the gear 37 are arranged so that a virtual straight line L10 passing through the rotation centers 36a and 37a of both gears intersects the ear thread opening direction, and the first pivot portion 53A and the second pivot portion 53B are provided so as to be located in a region defined by two virtual straight lines L11 and L12 that pass through the rotation centers 36a and 37a of the respective gears and are parallel to the direction of the ear thread opening. Yes. In the example shown in the figure, the first pivot part 53A and the second pivot part 53B pass through the rotation centers 36a and 37a of the corresponding gears 36 and 37 and are parallel to the ear thread opening direction. L12 is provided to be opposite to each other, that is, inside, in the weaving width direction. By doing in this way, since the angle change of connecting rod 51A, 51B at the time of rotation of the gears 36 and 37 is reduced more, it can convert into reciprocating motion more efficiently.

  Further, as shown in FIG. 10, the gear 36 and the gear 37 are arranged at intervals in the rotation axis direction so as to share the rotation center, and the tooth surface portion of the gear 35 that functions as the first gear is provided. Is formed by extending the shaft in the axial direction and meshed with both the gear 36 and the gear 37. In this embodiment, the first pivot portion 53A and the second pivot portion 53B pass through the rotation centers 36a and 37a of the corresponding gears 36 and 37 and are parallel to the ear thread opening direction. It is provided so as to be opposite to each other in the weaving width direction, that is, outside on the L0 side. Further, the rotation centers 36a and 37a of the gear 36 and the gear 37 are located in a region defined by two tangents L5 and L6 related to the gear 35 that are tangent to the outer peripheral end of the gear 35 and parallel to the direction of the ear thread opening. Thus, a gear 36 and a gear 37 are provided.

  In any of the above-described embodiments, each gear is constituted by a spur gear. However, the present invention is not limited to this, and other types of gears can be used. In the example shown in FIG. 11, the direction of the output shaft 34 of the pulse motor 33 is directed to the direction of the ear thread opening, and a bevel gear that is a three-dimensional gear is provided on the output shaft so that the tooth surface faces downward. The gear 36 and the gear 37 are constituted by bevel gears similar to the gear 35, and are arranged so that the rotation axes of the gears intersect with each other and the rotation center positions of the gear 36 and the gear 37 are shared. As described above, the angular displacement amount of the connecting rods 51A and 51B during the movement is reduced by arranging the gears so that the rotation center (rotation axis) of each gear having the pivotally attached portion is shared. As a result, the rotational motion of the pulse motor 33 is more efficiently converted into the reciprocating motion of the supports 20 and 21 having the yarn guide 32, so that the drive torque of the pulse motor 33 can be reduced. It becomes energy saving.

  Further, in the first embodiment shown in FIGS. 1 to 2, a gear 35 functioning as a first gear is used to drive a gear 37 functioning as a third gear, and between the second gear and the second gear. Although it is an example which shares both, it is not restricted to this. For example, as shown in FIG. 12, a gear 56 that functions as a fourth gear attached to a rotary shaft 59 that rotates integrally with the gear 36 is provided, and this is engaged with the gear 37 and driven, thereby driving the output shaft. It is also possible to drive the gear 37 via a gear 56 that is rotated by receiving the rotation of the gear 34. Furthermore, as shown in FIG. 13, it is also possible to provide a plurality of gears 56 and 57 that indirectly transmit the rotation and transmit the gears to the gear 37 integral with the gear 57.

  As described above, the connecting holes 51A and 51B, the arms 48A and 48B, and the pivots 53A and 53B and the pivots 27A and 27B that connect the carrier rods 23 and 25 are connected as described above. The connecting pins 52A, 52B and the like are not limited to the form of connection, and it is also possible to form a pivot on one of the members to be connected and connect the other member to this. It is sufficient to adopt the pivot attachment structure.

  The present invention is not limited to fluid jet looms such as air jet looms, but can be widely applied to other non-woven looms such as rapier looms and projectile looms.

1 shows a first embodiment of an ear weaving apparatus according to the present invention, which is an ear weaving apparatus (left side view) viewed from the left side direction of a loom. FIG. 2 is an ear weaving device (back view) as viewed from the direction of the rounded alphabet A in FIG. 1 in the first embodiment. It is a figure which shows the cross section of x-x 'shown in FIG. FIG. 3 is an enlarged view of a main part in a shaft peripheral portion of gears 36 and 37 functioning as second and third gears in the first embodiment. It is a figure which shows the other example of a structure of the driven side gear which has the 1st gearwheel which is a drive side gearwheel, and the 1st and 2nd pivotal attachment part in the ear weaving apparatus of this invention. Similarly to FIG. 5, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and the 1st and 2nd pivotal attachment part. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. In the first embodiment, it is a diagram illustrating a range with respect to the rotation center position of the second gear and the third gear having the first gear and the first and second pivot portions. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. Similarly to FIG. 6, it is a figure which shows the other example of a structure of the driven side gear which has a 1st gearwheel and a 1st and 2nd pivot part. It is a figure which shows the structural example which can change the center distance of each gear, when changing the number of teeth of the gear meshed | engaged with respect to the ear weaving apparatus which is 1st Example of this invention. It is a figure which shows the y-y 'cross section in FIG.

DESCRIPTION OF SYMBOLS 1 Ear weaving device 3 Ear thread 4 Woven cloth 5 筬 7 Warp heel frame 9 Stabilizing stay 10 Base plate 12, 13 Holder block 14, 15, 49 Bolt 17, 18A, 18B Screw hole 19 Hexagon socket head bolt 20 First Support body 21 Second support body 22 Healds 23, 24, 25, 26 Carrier rods 27A, 27B Pivoting portions 28A, 28B Slide guides 29A, 29B, 29C Slide rods 30, 31 Holder bracket 32 Thread guide 33 Pulse motor 34 Output Shafts 35, 36, 37 Gears 39A, 39B Connecting pins 40A, 40B Support shaft 41 Screw portion 42 Small diameter portion 43 Annular groove 44, 47 Retaining ring 46 Bearing members 48A, 48B Arms 51A, 51B Connecting rods 52A, 52B Connecting pins 53A, 53B Pivot 55, 56, 57, 58 Gear 59 Rotating shaft 60, 61A 61B long hole 62 notch 63 bolt 64 nut 65 Washer

Claims (8)

The first support body and the second support body that have a thread guide for guiding the ear thread and whose movement direction is regulated in the direction of the ear thread opening, and the loom main shaft motor are provided separately and are driven to rotate forward and backward. A drive motor, and an output shaft of the drive motor and the first and second supports, and the rotational motion of the drive motor is changed to the reciprocating motion of the first support and the second support. In a loom ear weaving device having a motion conversion mechanism for converting,
The motion conversion mechanism is
A first gear attached to the output shaft of the drive motor;
A second gear meshed with the first gear and having a first pivotally mounted portion at a position spaced radially from the rotation center;
A third pivoting portion provided on one of the first gear and the third gear meshed directly or indirectly with the first gear, the radial direction with respect to the center of rotation; The second pivot part provided at a position separated from
A first connecting rod having one end connected to the first pivot part and the other end connected to the first support;
An ear weaving apparatus for a loom having one end connected to the second pivot part and the other connecting rod connected to the second support at the other end. The second pivot portion is provided on the first gear,
The first pivot part and the second pivot part are provided on the same side in the weaving width direction with respect to a virtual straight line passing through the rotation center of the corresponding gear and parallel to the ear thread opening direction. The loom ear weaving device according to claim 1. The second pivot portion is provided on the third gear,
The first pivot part and the second pivot part are provided on opposite sides in the weaving width direction with respect to a virtual straight line passing through the rotation center of the corresponding gear and parallel to the ear thread opening direction. The loom ear weaving device according to claim 1. The second gear and the third gear are defined by two tangents of the first gear whose rotation center is a tangent to the outer peripheral end of the first gear and is parallel to the ear thread opening direction. The ear weaving device for a loom according to claim 3, wherein the ear weaving device is provided so as to be located in a region. The second gear and the third gear each have a rotation center of ± 45 degrees with respect to an imaginary straight line that passes through the rotation center of the first gear and is parallel to the ear thread opening direction. A region defined by two imaginary straight lines passing through the rotation center of the first gear, the region being provided in a region including the imaginary straight line passing through the rotation center of the first gear. The loom ear weaving device according to claim 3. The second gear and the third gear are arranged such that an imaginary straight line passing through the rotation center of both gears intersects the ear thread opening direction,
The first pivot part and the second pivot part are provided so as to be located in a region defined by two virtual straight lines that pass through the rotation center of each gear and are parallel to the direction of opening of the ear thread. The loom ear weaving device according to claim 3. In addition to the first gear, a fourth gear is attached to the output shaft of the drive motor,
The ear weaving device for a loom according to any one of claims 3 to 6, wherein the third gear is meshed with the fourth gear. The ear weaving device is configured such that at least one of the first gear, the second gear, and the third gear can be adjusted in position with respect to the rotation center of the gear to be meshed. The ear weaving device for a loom according to any one of claims 1 to 6.

Images