JP2800924B2 - Balance device for raising and lowering the bobbin rail of a roving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin rail raising / lowering device for a roving machine.

[0002]

2. Description of the Related Art A roving machine winds a roving yarn sent from a draft part while twisting the roving yarn by a rotation difference between a rotating flyer and a bobbin rotating at a higher speed. The bobbin is mounted on a bobbin wheel mounted on the bobbin rail, and the roving yarn is wound around the bobbin in a predetermined roving winding shape by the lifting and lowering movement of the bobbin rail. The bobbin rail is moved up and down by the action of a lifter rack attached to the bobbin rail and a pinion that meshes with the lifter rack and is driven to rotate forward and backward. Conventionally, the bobbin rail is supported by a swinging lever so that the bobbin rail can be moved with a small uniform force, and the swinging lever is connected to one end of a chain wound around a pulley and connected to the other end. A weight is attached to balance the weight of the bobbin rail with the weight (for example, see JP-A-48-209).
No. 47).

[0003]

However, since the weight of the bobbin rail is large, the weight and volume of the balance weight are increased in the conventional configuration. For this reason, not only is the workability at the time of attaching the weight poor, but also a large space for accommodating the weight is required, and there is a problem that the entire machine base is also increased in size.

[0004] The present invention was made in view of the problems of the, purpose of that is able to improve the workability in the attachment by eliminating the work of mounting heavy, yet is compact along with the space-saving, assembly and
An object of the present invention is to provide a bobbin rail lifting / lowering balance device for a roving machine, which facilitates removal work .

[0005]

In order to achieve the above object, according to the present invention , a rotary shaft is provided in parallel with the longitudinal direction of a machine base to support a bobbin rail and to swing as the bobbin rail moves up and down. A first end connected to a swinging lever
The other end of the cable is fixed to the rotating shaft so as to be integrally rotatable.
And a second take-up member fixed to the take-up member so as to be integrally rotatable with the rotating shaft, while fixing one end of the second take-up member in a state of being wound in a direction opposite to the first take-up line. The other end is connected to a spring, the spring is disposed in a state where the first winding member is rotationally urged in a direction in which the first cable is wound, and at least one of the two winding members is connected to the first winding member. First term and second term
The distance from the center of the rotating shaft to the winding portion changes so that the value of the moment acting on the rotating shaft via the first and second winding members by the ropes is always balanced in accordance with the expansion and contraction of the spring. And a rotary shaft for the roving machine.
Provided for each span of the
Both ends of the rotating shaft are placed on the bearing support protruding from the side of the shaft
It was arranged to be .

[0006]

[0007]

The rotation shaft is biased by the biasing force of the spring through the second cable and the second winding member in the direction in which the first winding member winds the first cable. The rope supports the bobbin rail via the swing lever. As the bobbin rail moves up and down, the rotation shaft rotates, and a spring connected to the other end of the second cable whose one end is fixed to the second winding member expands and contracts. The force of the spring pulling the second cable changes due to the expansion and contraction of the spring. Since at least one of the first winding member and the second winding member is formed of a cam whose distance from the center of the rotation shaft to the winding portion changes, the force of the spring changes. Even so, the force with which the first cable supports the bobbin rail via the swing lever is constant.

[0008] Also, since provided the rotation axis for each span of the spring piece Rover, it is disposed in a state of mounting both ends of the rotary shaft to the bearing support portion projecting from the side of the adjacent spring pieces, Assembly and removal of the rotating shaft is extremely simple.

[0009]

BRIEF DESCRIPTION real施例embodying the present invention with reference to FIGS. 1 to 3.

On the front side (left side in FIGS. 1 and 3) of the roving machine stand 1, bobbin rails 3 in which bobbin wheels 2 driven by a drive mechanism (not shown) are arranged in two rows in front and rear directions can be moved up and down. It is arranged in. The bobbin rail 3 is supported by a swing lever 5 provided for each span of a spring piece (machine frame) 4 constituting the roving machine frame 1, and is fixed to the spring piece 4 in a state of extending vertically. Is fixed to a slide member 7 that slides vertically along the guide member 6. A lifter rack 9 extending vertically is fixed to the slide member 7. The lifter rack 9 meshes with a pinion 11 that is integrally rotatably fixed to a drive shaft 10 that is rotated forward and reverse by a drive source (not shown), and is moved up and down by the rotation of the drive shaft 10 to move up and down the bobbin rail 3 together with the slide member 7. Let it.

A rotary shaft 12 is disposed above the spring piece 4 for each span in parallel with the longitudinal direction of the roving frame 1. As shown in FIG. 2, a semi-circular bearing support 13 having an open top is projected from both sides of each spring piece 4, and the rotating shaft 12 has a lower half of a bearing 14 fixed to both ends thereof. It is placed between the adjacent spring pieces 4 in a state of being fitted to the bearing support 13.

A cam 15 as a first winding member and a pulley 16 as a second winding member are provided near one end of the rotating shaft 12.
Is integrally formed with the rotating shaft 1 by the bolt 16a.
2 and so as to be rotatable integrally. The other end of the chain 17 is fixed to the cam 15 as a first cable whose one end is connected to the swing lever 5. The chain 17 is connected to the swing lever 5 in a state where a hook ring 18 fixed to one end thereof is hooked on a hook portion 5 a formed near the front of the swing lever 5. One end of the chain 19 is fixed to the pulley 16 in a state where the chain 19 is wound in a direction opposite to that of the chain 17, and the other end is connected to one end of a spring 21 via a connecting member 20. Have been. The other end of the spring 21 is fixed to a stud 22 fixed to a lower end of the spring piece 4 so as to penetrate the spring piece 4 in the horizontal direction via a hooking member 21a to which the other end of the spring 21 is fixed. . The connecting member 20 is inserted into the through hole 23a formed at the center of the locking member 23 toward the chain 17 side and locked by the flange portion. Member 2
3 and a threaded rod 25 screwed to the nut 24. The chain 17 is
Is fixed to one end.

The spring 21 is disposed so as to urge the rotary shaft 12 to rotate in a direction in which the cam 15 winds the chain 17. The cam 15 is rotated when the cam 15 is rotated to the winding side so that the moment acting on the rotating shaft 12 via the chain 17 and the cam 15 is always substantially constant in accordance with the expansion and contraction of the spring 21. It is formed in a shape that changes so that the distance from the center of the rotating shaft 12 to the winding portion (cam surface) gradually decreases. A guide roller 26 is rotatably fixed to the lower part of each spring piece 4, and the swing lever 5 is engaged with the guide roller 26 on the upper surface of the end opposite to the engagement portion with the bobbin rail 3. Is held in.

A pulley 27 having the same shape as the pulley 16 is fixed to the other end of the rotating shaft 12 so as to be integrally rotatable by a bolt 27a. A chain 19 is wound around the pulley 27 in the opposite direction to the chain 17. In this state, one end is fixed and the other end is connected to one end of a spring 21 via a connecting member 20. The other end of the spring 21 is fixed to a stud 22 fixed to a lower end of the spring piece 4 via a hooking member 21a.

When assembling the balance device constructed as described above, the rotary shaft 12 having the cam 15 and the pulleys 16 and 27 fixed and the bearings 14 fixed at both ends is projected from the spring piece 4. Bearing support 1
3 is arranged in a state where the bearing 14 is engaged. Since the bearing support 13 is formed in a semicircular shape whose upper part is open, the operator raises the rotary shaft 12 to a position above the position where the bearing 14 corresponds to the bearing support 13, and in that state, the rotary shaft 12 Is placed between the spans of the spring pieces 4, so that the rotating shaft 12 is supported at a predetermined position between the spans of the spring pieces 4 in a state where the bearings 14 are fitted to the bearing support portions 13. Next, the locking ring 18 fixed to the chain 17 is locked to the locking portion 5 a of the swing lever 5. Next, the locking member 21 a at the other end of the spring 21 is fixed to the stud 22 while the bobbin rail 3 is arranged at the maximum raised position. In this state, the locking member 21a is connected to the stud 22.
The force required to stretch the spring 21 is small to the length required to fix the spring 21. And finally, the connecting member 2
The tension of the spring 21 is adjusted by rotating the zero nut 24. Unlike the conventional apparatus, since no weight is used, there is no work of attaching a heavy object, and the assembling work can be performed safely. Also, since the rotating shaft 12 is supported at a predetermined position only by being placed from above on the span of the spring piece 4,
Assembly work becomes extremely easy. Note that the spring 21 is locked.
The member 21a is removed from the stud 22, and the latch ring 1
8 is removed from the hook 5a of the swing lever 5, and then rotated.
If the shaft 12 is lifted above the bearing support 13, the rotating shaft
12 can be removed from the bearing support 13. Follow
Is extremely easy to remove as well as assemble
Can be done.

Next, the operation of the above-configured apparatus will be described. When the drive shaft 10 is rotated forward, that is, clockwise in FIG. 1, the lifter rack 9 moves up via the pinion 11 together with the slide member 7 and the bobbin rail 3. In the state shown in FIG. 1, the spring 21 is in the most extended state,
The force by which the spring 21 pulls the chain 19 is maximized.
FIG. 3 shows a state in which the bobbin rail 3 is arranged at the maximum ascending position. In this state, the spring 21 is in the most contracted state, and the force with which the spring 21 pulls the chain 19 is minimized. Pulleys 16 and 27 around which the chain 19 is wound
Is constant, the moment applied to the rotating shaft 12 via the pulleys 16 and 27 is proportional to the force of the spring 21 pulling the chain 19, and becomes maximum in the state of FIG. 1 and minimum in the state of FIG.

On the other hand, the force acting on the chain 17 having one end fixed to the cam 15 via the swing lever 5, that is, the weight of the bobbin rail 3 is substantially constant (accurately, the roving winding 2).
And gradually increases as the winding proceeds). In order to smoothly raise and lower the bobbin rail 3 without applying excessive force to the drive source of the bobbin rail 3, the moment applied to the rotary shaft 12 via the cam 15 based on the force acting on the chain 17 and the pulley 16,
It is necessary to keep a balance between the moment applied to the rotating shaft 12 via the shaft 27 and the position of the bobbin rail 3, that is, regardless of the amount of expansion and contraction of the spring 21. Cam 15 is cam 15
Is formed so that the distance from the center of the rotating shaft 12 to the winding portion (cam surface) is gradually reduced when the shaft is rotated to the winding side. Accordingly, the moment applied to the rotating shaft 12 via the cam 15 changes. The rate of change of the moment is determined by the urging force of the spring 21 and the chain 19 and the pulley 1.
Since the rate of change of the moment acting on the rotating shaft 12 via the rotation shafts 6 and 27 is the same, the bobbin rail 3 is moved up and down while the balance between the two moments is always maintained.
The bobbin rail 3 is smoothly moved up and down without exerting an excessive force on zero.

Since the weight of the bobbin rail 3 including the roving winding 28 gradually increases with the progress of the winding of the roving, the urging force of the spring 21 for maintaining a balance with the bobbin rail 3 depends on the degree of the roving. It needs to be changed depending on whether or not it is based on the time when the film is wound. In the configuration of this embodiment, the connecting member 2
0 is rotated to rotate the screw rod 2.
5 protrudes from the nut 24 and the biasing force of the spring 21 can be easily adjusted.

Further, since the spring 21 is used as a mechanism for maintaining the balance with the bobbin rail 3, the mechanism for maintaining the balance becomes compact as compared with a conventional apparatus using a weight. Further, since a mechanism for maintaining balance is disposed near the end between the spans of the spring pieces 4, a considerably large space can be secured behind the roving machine stand. It becomes easy to accommodate devices to be incorporated into the roving frame, such as the proposed tube changer.

[0020]

[0021] The present invention is not limited to before you施例, for example, first side chain 17 is fixed
The pull-up member is used in place of the cam 15 and the pull-up member
The second winding member on the side where 9 is fixed may be a cam, or both winding members may be cams. The shape of this case cam is shaped differently from its <br/> Resolution Re cam 15 of the real施例. Further, a belt or a rope may be used instead of the chains 17 and 19. When using a belt or a rope, handling becomes easier than when using a chain. Also, or to form a cam 15 and pulley 16 to separate the real施例, a large spring 21 of the urging force with eliminating the chain 19 and spring 21 and its corresponding pulley 27 with respect to one span of the spring pieces 4 You may use one
No.

[0022]

As described above in detail, according to the present invention, a weight for balancing is not required, so that the work of mounting a heavy object is eliminated, the workability at the time of assembling is improved, and the apparatus is made compact. As a result, it becomes easy to reduce the size of the entire roving machine stand and to incorporate a pipe replacement device and the like into the roving machine stand. In addition, a rotating shaft is provided for each span of the spring piece of the roving machine, and both ends of the rotating shaft are placed in a state where both ends of the rotating shaft are mounted on bearing support portions protruding from the side of the adjacent spring piece. Not only is it extremely easy to assemble and remove ,
Independent moment acts on each swing lever of the rotating shaft
Therefore, the mechanism for maintaining the balance is
Not affected.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a first embodiment of the present invention.

FIG. 2 is a partially cutaway schematic front view of the same.

FIG. 3 is a schematic side view of a state in which a bobbin rail is raised.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Roving machine stand, 3 ... bobbin rail, 4 ... spring piece, 5 ... rocking lever, 12 ... rotating shaft, 13 ... bearing support, 14 ... bearing, 15 ... cam as a first winding member , 16, 27... Pulleys as second winding members,
17 ... a chain as a first cable, 19 ... a chain as a second cable, 21 ... a spring.

Claims (1)

(57) [Claims] A first rotating shaft is provided in parallel with a longitudinal direction of a machine base, and one end is connected to a swing lever that supports a bobbin rail and swings as the bobbin rail moves up and down.
The other end of the cable is fixed to the rotating shaft so as to be integrally rotatable.
And a second take-up member fixed to the take-up member so as to be integrally rotatable with the rotating shaft, while fixing one end of the second take-up member in a state of being wound in a direction opposite to the first take-up line. The other end is connected to a spring, the spring is disposed in a state where the first winding member is rotationally urged in a direction in which the first cable is wound, and at least one of the two winding members is connected to the first winding member. First term and second term
The distance from the center of the rotating shaft to the winding portion changes so that the value of the moment acting on the rotating shaft via the first and second winding members by the ropes is always balanced in accordance with the expansion and contraction of the spring. And a rotary shaft for the roving machine.
Provided for each span of the
Both ends of the rotating shaft are placed on the bearing support protruding from the side of the shaft
A bobbin rail lifting and lowering balance device for a roving machine.