JP3610678B2 - Coupling device for cross roller in loom - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cross roller coupling device in a loom.
[0002]
[Prior art]
Conventionally, as a coupling device for connecting a cross roller in a loom with a drive shaft, for example, the one shown in FIG. 4 is known. A bearing 32 is fixed to the shaft portion 31 of the cross roller 30, and the shaft portion 31 is rotatably supported by the receiving base 34 and the pressing lever 35 of the bracket 33 via the bearing 32. The holding lever 35 has a handle portion 36 and is supported by a support portion 38 so as to be rotatable about a support shaft 37. An engaging recess 39 is formed in the shaft portion 31 of the cross roller 30. A drive shaft 40 that is rotationally driven via a drive mechanism (not shown) is rotatably supported by the support portion 41 of the bracket 33 at a position corresponding to the shaft portion 31 of the cross roller 30. A coupling 42 is fixed to the end of the drive shaft 40 on the cross roller 30 side so as to be integrally rotatable and movable in the axial direction by key fitting (not shown). As shown in FIG. 5, an engagement piece 43 that is engaged with an engagement recess 39 formed in the shaft portion 31 of the cross roller 30 is fixed to the coupling 42 with a screw 44. On the opposite side of the coupling 42 to the cross roller 30, a fixing ring 45 that restricts the movement of the drive shaft 40 in the direction away from the cross roller 30 is fixed by a screw 46 so as to be integrally rotatable with the drive shaft 40. .
[0003]
Further, a stopper rod 47 is erected in a state where the tip is inserted into the insertion hole 48 of the bracket 32 so as to be positioned between the coupling 42 and the fixed ring 45 in front of the drive shaft 40. A grip 49 is provided at an end opposite to the insertion end of the stopper rod 47, and a resin coating 50 is applied to a portion in contact with the coupling 42. The stopper rod 47 restricts the axial movement of the coupling 42 caused by the vibration of the machine base, and the engagement piece 43 of the coupling 42 and the engagement recess 39 of the shaft part 31 of the cross roller 30 during operation of the machine base. Is prevented from being disengaged.
[0004]
JP-A-60-52657 discloses a coupling device as shown in FIG. A coupling 64 having an engagement portion 63 that engages with an engagement piece 62 of the shaft portion 61 of the cross roller 60 is coupled to the drive shaft 65 so as to be movable in the axial direction. An annular groove 66 is formed in the drive shaft 65, and a U-shaped clip 67 is fitted and fixed in the annular groove 66 to restrict movement of the coupling 64 in the axial direction.
[0005]
[Problems to be solved by the invention]
However, in the former prior art, the coupling 42 rotates integrally with the drive shaft 40, whereas the stopper rod 47 is fixed to the bracket 33, so that the surface of the stopper rod 47 that contacts the coupling 42 is not fixed. The resin coating 50 is worn out violently. Therefore, it is necessary to frequently replace the stopper rod 47 while observing the state of wear of the resin coating 50.
[0006]
Further, in the conventional technique disclosed in Japanese Patent Application Laid-Open No. 60-52657, the above problem is solved, but an annular groove 66 for fitting the clip 67 must be formed on the peripheral surface of the drive shaft 65. . When the surface of the drive shaft 65 is quenched, it is difficult to form the annular groove 66. Further, the clip 67 fitted in the annular groove 66 abuts the coupling 64 almost on the entire surface, whereas the opposite surface abuts a side surface of the annular groove 66 in a part of the annular groove 66. Therefore, the clip 67 may be deformed and detached from the annular groove 66. On the other hand, even if the clip 67 is directly fitted to the drive shaft 65 without providing the annular groove 66, it is difficult to restrict the movement of the coupling 64 only by the fitting force of the clip 67 itself to the drive shaft 65.
[0007]
The present invention has been made in view of the above problems, and its purpose is to effectively regulate the movement of the coupling without being worn by friction with the coupling, and at the same time to the drive shaft of the cross roller. An object of the present invention is to provide a cross roller coupling device in a loom equipped with a stopper that does not require any special processing.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the engagement is capable of rotating integrally with the drive shaft and movable in the axial direction, and engages with a cross roller to transmit the rotation of the drive shaft. A coupling device for a cross roller in a loom having a coupling that is moved to a position and a non-engagement position that does not engage with the cross roller, wherein the cross is coupled to the coupling when the coupling is in the engagement position. A stopper provided with a claw projecting outwardly in the vicinity of the opening of the fitting portion that can be integrally rotated and detachably fitted to the drive shaft on the opposite side of the roller, and fixed to the stopper And a fixing ring fixed to the drive shaft so as to be integrally rotatable on the opposite side of the cross roller from the position.
[0009]
In the invention described in 請 Motomeko 2, in the invention described in claim 1, the fitting portion of the stopper was into contact with the entire side surface with respect to the fixed ring.
[0010]
According to a third aspect of the present invention, in the second aspect of the present invention, the stopper includes a handle located on the opposite side of the opening of the fitting portion .
[0011]
According to the first to third aspects of the present invention, the movement of the coupling movable in the axial direction with respect to the drive shaft in the direction away from the cross roller is applied to the drive shaft on the side opposite to the cross roller with respect to the stopper and the stopper. It is regulated by a fixing ring fixed so as to be integrally rotatable. Further, the stopper is fitted and fixed to the drive shaft via the fitting portion. Further, the stopper is rotated to a position where the handle is easily grasped around the drive shaft while holding the fitting portion on the drive shaft.
[0012]
In the invention described in 請 Motomeko 2, the cross roller fitting portion of the stopper surface opposite abuts the locking ring over the entire surface.
[0013]
In the invention according to claim 3 , the stopper is detached from the drive shaft by grasping and pulling the handle located on the side opposite to the opening .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a bearing 3 is fixed to the shaft portion 2 of the cross roller 1, and is rotatably supported by the cradle 5 and the pressing lever 6 of the bracket 4 via the bearing 3. The holding lever 6 has a handle portion 7 and is rotatably supported by a support shaft 8 attached to a support portion 9. An engagement recess 10 is formed in the shaft portion 2 of the cross roller 1. A drive shaft 11 that is rotationally driven via a drive mechanism (not shown) is rotatably supported by the support portion 12 of the bracket 4 at a position corresponding to the shaft portion 2 of the cross roller 1. A key 13 is fixed to the end of the drive shaft 11 on the cross roller 1 side. The coupling 14 has a groove 15 to be fitted with the key 13, and is coupled to the drive shaft 11 so as to be integrally rotatable and movable in the axial direction. An engagement piece 16 that can be engaged with an engagement recess 10 formed in the shaft portion 2 of the cross roller 1 is fixed to the coupling 14 with a screw 17. The coupling 14 has an engagement position where the engagement piece 16 engages with the engagement recess 10 and transmits the rotation of the drive shaft 11 to the cross roller 1, and the engagement piece 16 disengages from the engagement recess 10. It is moved and arranged at each position. The coupling 14 is formed with a tool hole 19 that communicates with a hole 18 into which the drive shaft 11 is inserted. A tool used for moving the coupling 14 along the key 13 is inserted into the tool hole 19.
[0015]
Further, a metal fixing ring 20 is fixed to the drive shaft 11 by a screw 21 so as to be integrally rotatable. The fixing ring 20 is in contact with the support portion 12 of the bracket 4 to restrict the movement of the drive shaft 11 in the axial direction, and the contact surface between the fixing ring 20 and the support portion 12 of the bracket 4 is grease lubricated. The
[0016]
A resin stopper 22 is fitted between the coupling 14 and the fixing ring 20 so as to be integrally rotatable with the drive shaft 11. The width of the stopper 22 (the length in the direction of the drive shaft 11) is slightly smaller than the distance between the coupling 14 and the fixing ring 20 in a state where the stopper 22 is engaged with the shaft portion 2. As shown in FIG. 2, the stopper 22 has a substantially U-shaped fitting portion 24 having an opening 23, and a T-shape protruding in the radial direction of the drive shaft 11 from the fitting portion 24 on the opposite side to the opening 23. The handle 25 is provided. The inner diameter d of the fitting portion 24 is formed slightly smaller than the outer diameter of the drive shaft 11, and the stopper 22 is fitted and fixed to the drive shaft 11 by the elastic force of the fitting portion 24. On the other hand, the outer diameter D of the fitting portion 24 is smaller than the outer diameter of the fixing ring 20.
[0017]
Next, the operation of the apparatus configured as described above will be described. When the machine base is in operation, the rotation of the drive shaft 11 is transmitted to the shaft portion 2 of the cross roller 1 via the coupling 14, and the woven fabric is wound around the cross roller 1. At this time, when the coupling 14 is moved along the key 13 in a direction away from the cross roller 1 due to the influence of the machine vibration or the like, the coupling 14 comes into contact with the stopper 22. When the stopper 22 is moved in the direction away from the cross roller 1 against the fitting force due to the contact of the coupling 14, the movement is restricted by contacting the fixed ring 20. Accordingly, the further movement of the coupling 14 in the direction away from the cross roller 1 is restricted, and the engagement piece 16 of the coupling 14 is disengaged from the engagement recess 10 in the shaft portion 2 of the cross roller 1 and the cross roller 1 is moved. The rotation never stops. In addition, since all of the coupling 14, the stopper 22, and the fixed ring 20 rotate integrally with the drive shaft 11, the stopper 22 does not wear on the contact surface with the coupling 14 or the fixed ring 20. Although the fixing ring 20 is in contact with the support portion 12 of the bracket 4, since the contact surface is grease lubricated, wear is minimized.
[0018]
When a predetermined amount of woven fabric is wound around the cross roller 1, weaving is stopped and the cross roller 1 is replaced. Prior to the replacement of the cross roller 1, the stopper 22 is removed from the drive shaft 11. This operation is easily performed by grasping the handle 25 of the stopper 22 and pulling it out of the drive shaft 11. When the stopper 22 is removed from the drive shaft 11, a tool (not shown) is inserted into the tool hole 19 of the coupling 14, and the coupling 14 is moved along the key 13 in a direction away from the cross roller 1 to cross the coupling 14. The coupling with the shaft 2 of the roller 1 is released. When the coupling with the coupling 14 is released, the holding lever 6 is rotated by holding the handle portion 7 to release the bearing 3, and the cross roller 1 that has become full is removed from the cradle 5 of the bracket 4. It is removed in a direction perpendicular to the axial direction of the cross roller 1 and conveyed to a subsequent process.
[0019]
Next, a new empty cross roller 1 is placed on the cradle 5 of the bracket 4, and the bearing 3 integrally fixed to the shaft portion 2 is fixed by the pressing lever 6. After the empty cross roller 1 is fixed, the coupling 14 is moved to the cross roller 1 side along the key 13 to engage the engagement piece 16 with the engagement recess 10 to be fixed to the coupling 14 of the drive shaft 11. The stopper 22 is fitted again with the ring 20.
[0020]
This embodiment has the following effects.
(A) A stopper 22 is fitted between the coupling 14 and the fixed ring 20 of the drive shaft 11, and the stopper 22, the coupling 14, and the fixed ring 20 rotate together with the drive shaft 11. No wear occurs on the contact surfaces of the coupling 14 and the fixing ring 20, and the durability of the stopper 22 is improved.
[0021]
(B) Since the stopper 22 is made of resin and is fitted to the drive shaft 11 by the elastic force of the stopper 22 itself, it can be easily attached to and detached from the drive shaft 11 and is light in weight, so that the rotational load on the drive shaft 11 is reduced.
[0022]
(C) The width of the stopper 22 is substantially equal to the distance between the coupling 14 and the fixing ring 20 in a state where the stopper 22 is engaged with the shaft portion 2 of the cross roller 1. The movement is restricted by the fixing ring 20 and there is no need to form an annular groove in the drive shaft 11 into which the stopper 22 is fitted.
[0023]
(D) Since the width of the stopper 22 is slightly smaller than the distance between the coupling 14 and the fixing ring 20, the fluffs and the like are caught in the engaging recess 10 of the shaft portion 2 of the cross roller 1 and the coupling 14. Even if the interval between the fixing rings 20 is somewhat narrowed, the stopper 22 cannot be fitted to the drive shaft 11.
[0024]
(E) Since the stopper 22 includes a T-shaped handle 25 protruding in the radial direction of the drive shaft 11 from the fitting portion 24 on the opposite side to the opening 23, the stopper 22 is connected to the stopper 22 itself from the drive shaft 11. The work to remove against the mating force becomes easy.
[0025]
(F) Since the fitting portion 24 of the stopper 22 abuts against the fixing ring 20 over the entire side surface, the fixing ring 20 can receive a thrust load applied from the coupling 14 to the stopper 22 in a wide region, and the stopper 22 due to the thrust load. Can be prevented from being deformed or damaged.
[0026]
In addition, this invention is not limited to the said embodiment, For example, you may actualize as follows.
(1) A claw 26 may be provided in the vicinity of the opening 23 of the stopper 22 as shown in FIG. At this time, even when the drive shaft 11 stops while the handle 25 is positioned below the drive shaft 11, the handle 25 is rotated by holding the pawl 26 while the stopper 22 is fitted to the drive shaft 11. The stopper 22 can be removed after making the position easy to grasp.
[0027]
(2) The coupling between the drive shaft 11 and the coupling 14 is not limited to the key coupling, and may be, for example, a spline coupling.
(3) The shape of the handle 25 of the stopper 22 is not limited to the T-shape, and the fitting portion 24 is extended on the side opposite to the opening 23 and a hole into which the finger can be inserted is formed in the extending portion. There may be.
[0028]
(4) The width of the stopper 22 may be equal to the distance between the coupling 14 and the fixing ring 20 in a state where the coupling 14 is coupled to the shaft portion 2 of the cross roller 1. At this time, it is preferable that the corner portion near the opening 23 of the stopper 22 is dropped to facilitate insertion between the coupling 14 and the fixing ring 20.
[0029]
(5) When the drive shaft 11 is supported by the bracket 4 and the movement in the axial direction is restricted, the fixing ring 20 may not be brought into contact with the support portion 12 of the bracket 4. At this time, grease lubrication between the fixing ring 20 and the bracket 3 becomes unnecessary.
[0030]
(6) The outer diameter of the fitting portion 24 of the stopper 22 may be the same as that of the fixing ring 20 or may be larger than the fixing ring 20 to the extent that the stopper 22 is not deformed.
(7) The material of the stopper 22 is not limited to resin, but may be manufactured from metal, ceramic, wood, or the like.
[0031]
(8) The stopper 22 may be a pair of clamping pieces biased in the clamping direction by a biasing means such as a spring. At this time, by opening the pair of clamping pieces in the direction opposite to the urging direction and attaching / detaching the drive shaft 11, it is possible to prevent wear on the contact surface with the drive shaft 11 during attachment / detachment.
[0032]
The inventions other than the claims that can be grasped from the embodiment and the modified examples will be described together with the effects thereof.
(1) In the invention according to claims 2 to 3 , the stopper is made of resin. In this case, the stopper itself is lightweight, the rotational load on the drive shaft is reduced, and processing can be facilitated because it can be integrally formed.
[0033]
(2) In the invention described in claim 1 , the stopper is a pair of clamping pieces biased in the clamping direction to each other by biasing means such as a spring. In this case, by opening the pair of clamping pieces in the direction opposite to the urging direction and attaching / detaching the drive shaft, it is possible to prevent wear on the contact surface with the drive shaft during attachment / detachment.
[0034]
【The invention's effect】
As described above in detail, in the inventions according to claims 1 to 3 , since the coupling, the stopper, and the fixing ring rotate together with the drive shaft, the stopper is worn on the contact surface between the coupling and the fixing ring. The durability of the stopper is improved. Moreover, it is not necessary to perform special surface processing for preventing the stopper from moving in the axial direction with respect to the drive shaft. Also, the stopper can be easily attached to and detached from the drive shaft. In addition, the stopper can be rotated around the drive shaft with the claw and moved to a position where the handle can be easily grasped.
[0035]
In the invention described in 請 Motomeko 2, stopper so abuts the fixed ring entire side surface of the fitting portion, deformation or damage of the stopper according to the thrust load received from the coupling of the stopper is prevented.
[0036]
In the third aspect of the invention, the stopper can be pulled out from the drive shaft by grasping the handle, and therefore, the operation of removing the stopper from the drive shaft is facilitated .
[Brief description of the drawings]
FIG. 1 is a partially broken front view of a coupling device for a cross roller.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a side view of a stopper according to another embodiment.
FIG. 4 is a front view of a conventional cross roller coupling device.
5 is a side view showing an attachment state of an engagement piece of the coupling device of FIG. 4;
FIG. 6 is a partially cutaway front view of another conventional cross roller coupling device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cross roller, 11 ... Drive shaft, 14 ... Coupling, 20 ... Fixing ring, 22 ... Stopper, 23 ... Opening, 24 ... Fitting part, 25 ... Handle, 26 ... Claw

Claims (3)

It can rotate integrally with the drive shaft and can move in the axial direction, and moves between an engagement position that engages with the cross roller and transmits the rotation of the drive shaft, and a non-engagement position that does not engage with the cross roller. In a cross roller coupling device in a loom having a coupling arranged,
When the coupling is in the engagement position, it is fitted and fixed to the drive shaft so as to be integrally rotatable and detachable on the side opposite to the cross roller with respect to the coupling ,
A stopper provided with a claw protruding outward in the vicinity of the opening of the fitting portion to be fitted to the drive shaft ;
A fixing ring fixed to the drive shaft so as to be integrally rotatable on the opposite side of the cross roller from the fixing position of the stopper;
Cross roller coupling device in a loom equipped with The coupling device for a cross roller in a loom according to claim 1, wherein the fitting portion of the stopper abuts on the entire surface of the fixing ring . The coupling device for a cross roller in a loom according to claim 2, wherein the stopper includes a handle located on the opposite side of the opening of the fitting portion .

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