JP4383964B2 - Loom hammering device - Google Patents

Description

  The present invention relates to a hammering device for a loom.

  A loom hammering device is fixed to a lead shaft, a locking shaft that is rotated in conjunction with the rotation of the main shaft of the loom, a plurality of swords attached to the locking shaft, a lead holder that is supported by the plurality of swords. It has a habit. As a result, the scissors, the lead holder, and the sled sword are connected to the rocking shaft, swing around the rocking shaft, and perform a striking motion in conjunction with the rotation of the main shaft of the loom.

  However, since the center of gravity of the rocking shaft and its connected object is located on the heel side with respect to the swing center, the center of gravity and the swing center are greatly different, and as a result, the rocking shaft and its connected object are in an unbalanced state. As a result, vibration is generated with the striking motion, causing wear of members and generation of noise, and hindering the speeding up of the loom. For this reason, conventionally, a means for improving the unbalanced state of the locking shaft and its integrally connected object is used for the hammering device (for example, Patent Document 1).

Specifically, in the hammering device described in Patent Document 1, three rocking shafts are provided apart from each other along the weaving width direction, and the two balance shafts correspond to the separated portions of the pair of rocking shafts. Each of them is disposed on the opposite side of the locking shaft. Furthermore, connecting members having respective insertion holes for the locking shaft and the balance shaft are disposed at both ends of each balance shaft, and both ends of the balance shaft are connected to the ends of the two locking shafts. The balance shaft improves the unbalanced state by positioning the center of gravity of the rocking shaft and its connected object in the vicinity of the swing center, and swings the sword so as to perform a striking motion. Further, since the rocking shaft is provided discontinuously without being provided over the entire width of the weaving width, the weight is reduced, the load on the hammering device is reduced, and the loom speed can be increased.
Shoko 57-23514 (3rd page, Fig. 1)

  Since the balance shaft oscillates about the rocking shaft as a center of oscillation, the rotational force of the rocking shaft, that is, the rotational torque is transmitted to the balance shaft via the connecting member, and a load is applied in the oscillation direction. Therefore, if the bending rigidity in the direction in which the load is applied, that is, the bending rigidity in the swinging direction is high, bending is caused by the rotational torque, so that it is possible to avoid vibrations and damage to the striking motion. Further, there is no problem even if the bending rigidity in the direction in which no load is applied, that is, the bending rigidity in the oscillation center direction is low, and the weight of the balance shaft can be reduced by doing so. Therefore, if the cross-sectional shape of the balance shaft is non-circular, the swing direction bending stiffness is different from the swing center direction bending stiffness, and if the swing direction bending stiffness is higher than the swing center direction bending stiffness, the balance shaft is In addition, the bending can be suppressed and the weight can be reduced. As a result, the swinging portion of the hammering device is reduced in weight, and the inertia force of forward and reverse rotation is reduced, enabling the loom to be operated at high speed. However, in the gazette of patent document 1, the cross-sectional shape of a balance shaft is circular, and said effect cannot be acquired.

  In view of the above-described problems of the prior art, the object of the present invention is to eliminate the bending of the balance shaft in the looming device of the loom so as to suppress vibration and enable an accurate striking motion, and to reduce the weight of the balance shaft. The aim is to make the loom faster.

  The present invention has been made to achieve the above object, and includes a plurality of locking shafts spaced apart in the weaving width direction, and extending in the weaving width direction on the opposite side of the locking shaft. And a pair of connecting members for connecting both ends of the balance shaft to the ends of the pair of locking shafts, respectively. In such a loom hammering device, the balance shaft has a non-circular cross-sectional shape in which the rocking direction bending rigidity is larger than the rocking center direction bending rigidity.

  In the present invention, the following shape is specifically adopted as the non-circular cross-sectional shape in which the swinging direction bending rigidity of the balance shaft is larger than the swinging center direction bending rigidity.

  First, in 1st invention, the cross-sectional shape of the balance shaft is made into the trapezoid whose ridge side is longer than the ridge side. In the second aspect of the invention, the cross-sectional shape of the balance shaft is a sector shape in which the opposite side is formed by an arc whose center is the center of curvature and is longer than the side. Furthermore, in 3rd invention, the cross-sectional shape of the balance shaft is made into the concave shape where the center of the heel side was dented.

  The balance shaft oscillates around the rocking shaft, and the rotational force of the rocking shaft, i.e., rotational torque, is transmitted through the connecting member to apply a load in the oscillating direction, but the cross-sectional shape of the balance shaft is oscillated. If the direction bending rigidity is a non-circular cross-sectional shape larger than the oscillation center direction bending rigidity, it is possible to avoid bending due to rotational torque, and to prevent the striking motion from being impaired due to bending of the balance shaft. In addition, since the bending stiffness in the direction of the center of oscillation in the direction in which no load due to rotational torque is applied is reduced, the balance shaft is lightened by that amount, and the rocking part of the hammering device is reduced in weight and forward and reverse. The inertial force of rotation is reduced, and the loom can be operated at high speed.

  In particular, the cross-sectional shape of the balance shaft has a trapezoidal shape in which the ruminant side is longer than the heel side, a fan shape in which the ruminating side is longer than the heel side formed by an arc whose center is the center of curvature, or By adopting a concave shape in which the center of the heel side is recessed, the balance shaft surely has a bending rigidity in the swing direction larger than that in the swing center direction. Further, since the position of the center of gravity of the balance shaft is farther away from the center of swing, the balance can be efficiently achieved without using the balance shaft as a heavy object. Thereby, weight reduction of the whole rocking | swiveling part of the hammering apparatus 50 can be achieved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 7 show a first embodiment of the present invention in a hammering device 50 of an air jet loom. FIG. 1 is a front view as viewed from the winding side of the loom, and FIG. 2 is an enlarged view of a main part of FIG. 3 and 4 are side views showing a cross section viewed from AA in FIGS. 1 and 2, FIG. 3 shows a beating state, and FIG. 4 shows a state in which the reed is most retracted to the delivery side. FIG. 5 is a side view showing a cross section viewed from BB in FIGS. 1 and 2. 6 is a cross-sectional view taken along the line DD of FIG. FIG. 7 is a sectional view taken along the line CC in FIGS. 1 and 2.

  The hammering device 50 includes a pair of end support members 2, 2 provided on the left and right frames 1, 1 of the loom and two first support members rotatably supported by the pair of end support members 2, 2, respectively. A pair of driving devices (not shown) that are respectively provided on the right and left of the loom and that drive the two first locking shafts 3 and 3 in conjunction with the rotation of the main shaft 4 of the loom, and the entire weaving width. And the two first locking shafts 3 and 3 adjacent to the two first locking shafts 3 and 3, respectively, and both ends of the lead holder 6 and the insertion holes And a pair of sword swords 8 and 8 to which the first locking shaft 3 and the second locking shaft 7 are inserted and connected, and are spaced apart from each other in the weaving width direction. The two second locking shafts 7, 7 are both spaced apart in the weaving width direction by two third locking shafts 9, 9, and both ends are extended by the left and right frames 1, 1 extending in the weaving width direction. A pair of intermediate support devices 30 and 30 provided on the beam 10 to be supported and rotatably supporting the two third rocking shafts 9 and 9, respectively, and a pair of the second rocking shaft 7 and the third rocking shaft 9 Two first balance shafts 11 and 11 disposed corresponding to the two spaced apart portions of the locking shafts 7 and 9, respectively, and disposed corresponding to the spaced apart portions of the pair of third locking shafts 9 and 9. A second balance shaft 12, and two first coupling devices 41 respectively disposed on the first balance shaft 11 side ends of the two second rocking shafts 7, One third and a second coupling device 42 four disposed at both ends of the rocking shaft 9.

  A pair of locking shafts 7, 9 that are spaced apart are formed by the adjacent second locking shaft 7 and the third locking shaft 9, and are spaced apart by the two adjacent third locking shafts 9. A pair of locking shafts 9, 9 is formed. The first balance shaft 11 is disposed corresponding to the separated portion of the former pair of locking shafts 7 and 9, and a pair of connecting members 41 and 42 including a first connecting device 41 and a second connecting device 42 are provided. The both ends of the first balance shaft 11 are respectively connected to the ends of the pair of locking shafts, that is, the second rocking shaft 7 and the third rocking shaft 9. The second balance shaft 12 is disposed corresponding to the separated portion of the latter pair of rocking shafts 9, 9, and a pair of connecting members 42, 42 including two second connecting devices 42 are provided in the second balance shaft 12. The both ends of the second balance shaft 12 are respectively connected to a pair of locking shafts, that is, the ends of the two third locking shafts 9.

  Two first rocking shafts 3, 3, two second rocking shafts 7, 7, two third rocking shafts 9, 9, two first balance shafts 11, 11, and second balance shaft 12 are respectively A pair of swords 8 and 8, two first connecting devices 41 and four second connecting devices 42 arranged at the ends are connected to each other, and the pair of end supporting members 2, 2 and two intermediate supporting devices. A pair of drive devices (not shown) that can be rocked about the rocking shafts 3, 7, and 9 that are coaxially supported by the rocking centers 30 and 30 and that drive the two first rocking shafts 3 and 3, respectively. Is swung by. The flange 5 has a plurality of sub-nozzles supported by the lead holder 6 with both ends and four intermediate portions supported by the pair of swords 8 and 8 and the four second coupling devices 42 via the lead holder 6. Together with 31, the rocking shafts 3, 7, and 9 are connected to swing. The details will be described below.

  As shown in FIG. 5, the intermediate support device 30 is fixed to the beam 10 via bolts, the bracket 14 fixed to the plate 13 via bolts, and the bracket 14 fixed to the bracket 14 via bolts. Bearing holder 15, a bearing (not shown), and a bearing cover 16 that is attached to the bearing holder 15 via a bolt and fixes the bearing, and all the locking shafts 3, 3, 7, 9, 9 The end support members 2 and 2 and the two intermediate support devices 30 and 30 are coaxially supported to suppress vibrations and enable an accurate striking motion.

  The sled sword 8 that supports the end of the lead holder 6 is provided with a notch in the connecting portion with the locking shafts 3 and 7, and the notch is formed over the entire longitudinal direction and the locking shafts 3 and 7 are inserted. The first locking shaft 3 and the second locking shaft 7 are firmly connected to each other by so-called split tightening via bolts.

  As shown in FIG. 6, the first coupling device 41 includes a main body member 33 and two shaft pressers 17. The main body member 33 has two connecting grooves 33a and 33b made of arcuate surfaces, and is opposed to the two connecting grooves 17a and 17a made of arcuate surfaces of the two shaft holders 17 so as to face the circular shape of the second locking shaft 7. An insertion hole and a circular insertion hole of the balance shaft 11 located on the opposite side of the insertion hole are formed.

  Both end portions 11 a of the first balance shaft 11 have a circular cross section, and the end portion of the second rocking shaft 7 and the end portion 11 a of the first balance shaft 11 are respectively inserted into the insertion holes of the first coupling device 41. By fastening the bolt 18 in the inserted state, the end portion of the second rocking shaft 7 and the end portion 11a of the first balance shaft 11 are pressed between the main body member 33 and the shaft presser 17, and the first connecting device 41 is firmly connected.

  As shown in FIG. 3, the second coupling device 42 includes a main body member 36, a locking shaft press 38 and a balance shaft press 37. The main body member 36 has two connecting grooves 36a and 36b each having an arc surface, and is opposed to the two connecting grooves 38a and 37a each having an arc surface of the locking shaft press 38 and the balance shaft press 37, so that the third locking shaft is provided. 9 circular insertion holes and the circular insertion holes of the balance shafts 11 and 12 located on the opposite side of the insertion hole are formed.

  Both end portions 12a of the second balance shaft 12 have a circular cross section like the both end portions 11a of the first balance shaft 11, and the end portions of the third rocking shaft 9 and the end portions 11a of the balance shafts 11, 12. , 12a are inserted into the respective insertion holes of the second connecting device 42, and the bolts 18 are fastened, whereby the third locking shaft 9 and the balance shafts 11, 12 are connected to the main body member 36 and the shaft presser 37. , 38 and is firmly connected via the second connecting device 42.

  The locking shaft presser 38 is formed of a connecting portion 38b having a connecting groove 38a having an arcuate surface and a sword 38c extending from the connecting portion 38b in the 筬 5 direction. The sled sword 38c extends in the flange 5 direction and engages with an intermediate portion of the lead holder 6 via a bolt, and supports the intermediate portion of the flange 5. In addition, the sled sword 38c has a U-shaped cross-sectional shape and is formed with high rigidity, and is provided with a cast hole 38d to reduce the weight.

  As described above, the two first rocking shafts 3, 3, the two second rocking shafts 7, 7, the two third rocking shafts 9, 9, the two first balance shafts 11, 11, and the second balance shaft 12 are The scissors are rocked through a pair of swords 8 and 8 and four second connecting devices 42 which are firmly connected and support the lead holder 6. Further, the balance shafts 11 and 12 are positioned on the side opposite to the rocking shafts 3, 7 and 9, that is, the swing center 19, and are members positioned on the side of the flange 5, the lead holder 6, the sub nozzle 31, and the like. The center of gravity of the rocking shafts 3, 7, 9, and their connected objects is brought closer to the swing center 19 to improve the unbalanced state.

  The intermediate portions 11b and 12b excluding both end portions 11a and 12a of the balance shafts 11 and 12 have a substantially elliptical cross-sectional shape as shown in FIG. 7 which is a cross-sectional view taken along the line CC in FIGS. The length in the swing direction in the direction orthogonal to the direction of the swing center 19, that is, the dimension A is longer than the length in the swing center 19 direction, that is, the dimension B. The center of gravity 20 is located at the center of the cross section. As a result, the balance shafts 11 and 12 are bent in the direction in which a load due to the rotational torque from the rocking shafts 7 and 9 is applied, that is, in the swing direction, the bending rigidity in the direction in which no load is applied, that is, in the swing center direction. It avoids the occurrence of vibrations and damage to the striking motion, which is greater than the stiffness and causes deflection due to rotational torque. Further, since the bending rigidity in the direction of the oscillation center in the direction in which no load is applied is reduced, the balance shafts 11 and 12 are reduced in weight, and the loom speed can be increased.

  The A dimension of the cross-sectional shape of the balance shafts 11 and 12 shown in FIG. 7 is preferably 1.1 times or more than the B dimension, and the bending rigidity in the oscillating direction can be increased while reducing the weight.

  The balance shafts 11 and 12 of the present embodiment both have a substantially elliptical cross-sectional shape, but may be rectangular or oval, and may be reinforced by providing ribs.

  FIG. 8 shows a first modification, in which a C-sized rib is provided on the swing center 19 side to increase the bending rigidity in the swing center direction. Since the rib is auxiliary and does not greatly affect the bending rigidity, the cross-sectional shape is determined excluding the rib. However, by providing a large rib, if the bending stiffness in the oscillation center direction is greater than or equal to the bending stiffness in the oscillation direction, the rib increases the weight. Contrary to enabling high speed, it is not preferable.

  The cross-sectional shape of the balance shafts 11 and 12 may be formed in a trapezoidal shape, a sector shape, or a concave shape.

  FIG. 9 shows a second modified example, and the cross-sectional shape of the balance shaft portions 11 and 12 is a sector shape in which the opposite side is formed by an arc whose center of curvature is substantially the swing center 19 and is longer than the side of the flange. Have. Since the ruminating side is formed by an arc whose center of curvature is approximately the center of curvature 19, it is possible to avoid interference with other devices located on the ruminating side due to the rocking and to balance efficiently. Can do. That is, since the center of gravity 20 of the balance shafts 11 and 12 is farther away from the swing center 19, the entire center of gravity of the rocking shaft and its connected object can be swung without using the balance shafts 11 and 12 as heavy objects. It becomes possible to approach the center 19. Thereby, weight reduction of the whole rocking | swiveling part of the hammering apparatus 50 can be achieved.

  FIG. 10 shows a third modification, and the cross-sectional shapes of the balance shafts 11 and 12 have a concave shape in which the center on the side of the flange 5 is recessed. As in the second modification example of FIG. 9, since the center of gravity 20 of the balance shafts 11 and 12 is farther away from the swing center 19, the balance can be achieved efficiently.

  In the first embodiment, the first connecting device 41 is formed by the main body member 33 and the two shaft pressing members 17, and the second connecting device 42 is formed by the main body member 36, the balance shaft pressing member 37, and the locking shaft pressing member 38. Although both are formed from three members, the first connecting device 41 and the second connecting device 42 may both be formed from one member.

  In the second embodiment shown in FIG. 11, the second connecting device 42 is formed by a connecting lath sword 35 and is formed by one member. The connecting sword 35 is formed of a connecting portion 35c having a circular rocking shaft insertion hole 35a and a circular balance shaft insertion hole 35b, and a sword 35d extending from the connecting portion 35c in the flange 5 direction and engaging with the lead holder 6. Is done. The connecting lath sword 35 is provided with two notches in the connecting portion 35c, the notches are formed over the entire longitudinal direction, and reach the locking shaft insertion hole 35a and the balance shaft insertion hole 35b, respectively. The third rocking shaft 9 and the first balance shaft 11 or the third rocking shaft 9 and the first balance shaft 12 are firmly connected by so-called split tightening via 18.

  In the first embodiment, the intermediate portion of the flange 5 is supported by the sled sword 38c of the locking shaft press 38 constituting the second connecting device 42, but the intermediate portions 11b and 12b of the balance shafts 11 and 12 are supported by the flange 5 It may be supported by a sword sword extending in the direction.

  In the third embodiment shown in FIG. 12, the sword sword mounting surface is formed on the side surface of the intermediate portion 12 b of the balance shaft 12, and the sword sword 39 is mounted via a bolt 40. Further, the balance shaft 12 is formed so that a part of the intermediate portion 12b is formed in a circular cross section adjacent to one end portion, and the balance shaft insertion hole and a cut formed to extend over the entire longitudinal direction and reach the insertion hole. A sled sword 43 having a chip is provided. The sled sword 43 is attached to the intermediate portion 12b of the balance shaft 12 by so-called split tightening via bolts 40. The both swords 39 and 43 extend in the direction of the flange 5 and engage with the lead holder 6 to support the intermediate portion of the flange 5.

  The present invention is not limited to any of the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is the front view seen from the winding side of the loom of the 1st example of the present invention. It is a principal part enlarged view of FIG. It is a side view which shows the cross section seen from AA of FIG. 1 and FIG. 2, and shows a beating state. It is a side view which shows the cross section seen from AA of FIG. 1 and FIG. 2, and shows the state which the heel retreated most to the sending side. It is a side view which shows the cross section seen from BB of FIG. 1 and FIG. It is sectional drawing seen from DD of FIG. It is sectional drawing seen from CC of FIG. 1 and FIG. It is a 1st modification of a 1st Example. It is a 2nd modification of a 1st Example. It is a 3rd modification of a 1st Example. It is a 2nd Example of this invention. It is a 3rd Example of this invention.

DESCRIPTION OF SYMBOLS 1 Frame 2 End part support member 3 1st rocking shaft 4 Main shaft 5 ６ 6 Lead holder 7 2nd rocking shaft 8 Slate sword 9 3rd rocking shaft 10 Beam 11 1st balance shaft 11a End part 11b Middle part 12 2nd balance shaft 12a End portion 12b Intermediate portion 13 Plate 14 Bracket 15 Bearing holder 16 Bearing cover 17 Shaft retainer 17a Connection groove 18 Bolt 19 Center of swing 20 Center of gravity 30 Intermediate support device 31 Sub nozzle 33 Body member 33a Connection groove 33b Connection groove 35 Connection slide sword 35a Locking shaft Insertion hole 35b Balance shaft insertion hole 35c Connection portion 35d Sleede sword 36 Main body member 36a Connection groove 36b Connection groove 37 Balance shaft retainer 37a Connection groove 3 Locking shaft retainer 38a connecting groove 38b connecting portion 38c slay swords 38d cast hole 39 slay swords 40 bolt 41 first coupling device 42 and the second coupling device 43 slay swords 50 beating device

Claims (3)

A plurality of locking shafts that are spaced apart in the weaving width direction, and a balance shaft that extends in the weaving width direction on the opposite side of the locking shaft and is disposed to correspond to the separated portions of the pair of locking shafts And a striking device including a pair of connecting members that connect both ends of the balance shaft to the ends of the pair of rocking shafts,
The balance shaft has a trapezoidal shape in which the opposite side is longer than the side, and has a cross-sectional shape in which the swing direction bending rigidity is larger than the swing center direction bending rigidity. A plurality of locking shafts that are spaced apart in the weaving width direction, and a balance shaft that extends in the weaving width direction on the opposite side of the locking shaft and is disposed to correspond to the separated portions of the pair of locking shafts And a striking device including a pair of connecting members that connect both ends of the balance shaft to the ends of the pair of rocking shafts,
The balance shaft is formed in an arc whose arcuate side is substantially centered on the center of curvature, and is longer than the side of the saddle. A loom hammering device characterized by comprising: A plurality of locking shafts that are spaced apart in the weaving width direction, and a balance shaft that extends in the weaving width direction on the opposite side of the locking shaft and is disposed to correspond to the separated portions of the pair of locking shafts And a striking device including a pair of connecting members that connect both ends of the balance shaft to the ends of the pair of rocking shafts,
The balance shaft has a concave shape in which the center of the heel side is recessed, and has a cross-sectional shape in which the rocking direction bending rigidity is larger than the rocking center direction bending rigidity.

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