JPH0518934B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a device for removing residual roving from a roving bobbin, and particularly to a flocked belt moving device for the residual roving removing device that can be incorporated in the middle of a bobbin conveying device. .

Prior Art The roving bobbin that is returned from the spinning frame to the roving frame is
Normally, the roving is continuously conveyed by a bobbin conveying device, but unless the remaining roving on the bobbin is removed during this conveying path, it cannot be reused in the roving machine. It is something.

Therefore, we installed a flocked belt that runs in contact with the peripheral wall of the roving bobbin, which is rotatably suspended from the bobbin hanger of the bobbin conveying device, so that the hair on the surface of the flocked belt is Accordingly, an apparatus has been proposed that efficiently removes the remaining roving by unwinding and unwinding the remaining roving (Japanese Patent Laid-Open No. 62-90337).

In this device, a flocked belt runs on one side so as to sandwich multiple roving bobbins being conveyed by a bobbin conveying device, and the roving bobbins can be rotatably held on the other side. If a frame mechanism is provided and the flocked belt is advanced toward the roving bobbin so that its surface comes into contact with the remaining roving on the roving bobbin, the remaining roving is removed from the surface by the flocking belt. Since it can be unwound in order and taken away, it can be separated from the flocked belt using a separate fiber opening device and reused.

Problems to be Solved by the Invention According to such prior art, the flocked belt runs on a moving frame that can move back and forth relative to the roving bobbin. The driving force for moving the moving frame forward in the direction of the roving bobbin was maintained at a large constant value throughout the entire stroke, so the flocking belt came into contact with the surface layer of the remaining roving. At this stage, the hairs on the surface of the flocking belt were properly engaged with the ends of the remaining rovings, and there was almost no failure to start the operation of unwinding and removing the remaining rovings. However, on the other hand, when the amount of remaining roving on the roving bobbin becomes small, the hair on the flocked belt is strongly pressed against the hard peripheral wall of the roving bobbin, which causes a problem of large wear and tear on the hair on the flocked belt. It was inevitable.

Therefore, in view of the problems of the prior art, it is an object of the present invention to apply a driving force to the moving frame when advancing the flocking belt at the initial stage and the final stage of the stroke, so that the driving force applied to the moving frame when moving the flocking belt forward is more effective in the latter stage than in the former stage. By switching to a smaller size, it is possible to prevent the start of the remaining roving removal operation from failing and to minimize the wear and tear on the hair on the flocking belt. An object of the present invention is to provide a flocking belt moving device for a residual roving removing device.

Means for Solving the Problems In order to bring the running flocking belt into contact with the roving bobbin, the present invention has a structure in which a moving frame that is movable back and forth with respect to the roving bobbin is mounted. In addition to being equipped with a flocked belt,
The gist of this moving frame is that even when moving forward in the direction of the roving bobbin, it receives a smaller driving force after the switching point than at the start of forward movement.

With this configuration, since the moving frame receives a sufficiently large driving force at the time when the moving frame starts moving forward, it can smoothly start moving forward, while at the same time reducing the amount of remaining roving bobbin. Since the large driving force is still being applied even when the roving and the flocked belt come into contact with each other, the operation for unwinding and removing the remaining roving can be started smoothly.

Therefore, as the unwinding and removal of the remaining roving progresses, the moving frame continues to move forward and the flocked belt continues to be in contact with the remaining roving. and removed from the roving bobbin.

On the other hand, when the amount of roving remaining on the roving bobbin becomes small and the forward stroke of the moving frame exceeds the switching point, the driving force applied to the moving frame is switched to a smaller value, so that from now on, the flocking belt will not move on the roving bobbin. Therefore, the risk of mechanical damage to the hairs of the flocking belt due to contact with the hard peripheral wall of the roving bobbin is reduced compared to when the driving force is maintained high. can be significantly reduced.

It works as described above.

Example Examples will be described below with reference to the drawings.

The flocked belt moving device of the residual roving removal device includes a moving frame 20 on which the flocked belt device 10 is mounted,
It also includes an air cylinder 31 that drives the movable frame 20 in the front-back direction (FIG. 1).

The remaining roving removal device is a device for removing the remaining roving from the roving bobbin B, which is rotatably suspended from the bobbin hanger C2 and being conveyed by the carrier C1 of the bobbin conveying device C. , the bobbin conveying device C is an indoor rail C3 from the spinning frame to the roving frame.
It is assumed that the carrier C1 is made to travel along the roving threads, and a large number of roving bobbins B, B, etc. with remaining roving threads are suspended in a line and conveyed in a direction perpendicular to the plane of the paper in FIG. However, on a part of the peripheral wall of the roving bobbin B,
A States King cloth BC is attached to secure the beginning of the roving.

The flocking belt device 10 has a pair of cylindrical pulleys 11, 11 so that it can travel simultaneously in contact with a group of a predetermined number of roving bobbins B, B... being transported by the bobbin transport device C. The main component is an endless flocked belt 12 that runs around the belt. Numerous hairs are planted on the surface of the flocking belt 12, and when they come into contact with the remaining rovings on the roving bobbin B, they often catch the end of the remaining rovings and wind it back. shall be able to be removed. A pair of pulleys 11, 1, only one of which is shown
1 is vertically supported via a bearing 11a, and one of them is driven by a belt pulley 1 in order to be driven in a predetermined direction by a motor (not shown).
1b. Further, the remaining rovings captured and removed by the flocked belt 12 are peeled off from the surface of the flocked belt 12 by a fiber opening device (not shown) and collected as waste cotton.

The moving frame 20 moves on the base frame BF,
It is a stand frame equipped with wheels 21, 21, etc. so as to be able to move back and forth toward the roving bobbins B, B, etc., and a flocking belt device 10, an accompanying motor, and a fiber opening device are mounted on the top surface of the frame. etc. shall be able to be installed. However, the flocked belt device 10 is mounted via a pedestal 22 provided with adjustment screws 22a, 22b in order to finely adjust the relative relationship with the roving bobbins B, B, .

The air cylinder 31 has brackets 31 at both ends.
The air cylinder is installed on the base B1 via the rods 31a and 31b, and the tip of the rod 31c is fixed to the moving frame 20.

The air cylinder 31 is a so-called tandem cylinder (Fig. 2), and its rod 31c is equipped with two pistons 31f and 31g that slide within two sets of pressure chambers 31d and 31e that are separated from each other. There is. The pressure chamber 31d on the front side is the main chamber, and high pressure air is supplied to its air ports PT1 and PT2.
It is assumed that a large driving force can be generated in the direction to extend or shorten it. On the other hand, the rear pressure chamber 31e is an auxiliary chamber, and low pressure air is supplied to the rear air port PTa1 so that the rod 31c can be extended with a small driving force. The air port PTa2 in front of the pressure chamber 31e is open to the atmosphere.

The remaining roving removal device further includes roving bobbins B and B.
It is provided with a swinging frame 50 that stands up so as to sandwich ... (Fig. 1). The swing frame 50 is a structure that is swingably supported around a swing shaft 51 in the lower part and has an L-shaped cross section and includes a horizontal piece 52 and an upright piece 53.

A guide roller 54 is pivotally attached to the tip of the horizontal piece 52, and this guide roller 54 can roll inside the step cam 23 disposed on the side surface of the moving frame 20. . Here, the step cam 23 has a two-step horizontal portion 23 that is high on the front side of the moving frame 20 and low on the rear side.
This is a bent box-shaped guide cam formed by diagonally connecting parts a and 23b.

On the other hand, an adjustment screw 55 is provided at the tip of the upright piece 53.
A roller device 55 which can be adjusted via a and a catch lever 55b are provided. The roller device 55 is in contact with the outer circumference of the roving bobbin B when the upright piece 53 stands up vertically.
The position of the roving bobbin B can be restrained in a rotatable state, while the catch lever 55b
is capable of temporarily restraining the movement of the carrier C1 of the bobbin transport device C by engaging with the lower end of the bobbin hanger C2 (double-dashed line in FIG. 1). However, the roller device 55 is arranged so that the position of each of the group of roving bobbins B, B... suspended in a line via the bobbin hanger C2 can be restricted. It is assumed that a predetermined number of roving bobbins B are provided.

A swinging shaft 56a is horizontally installed in the middle of the upright piece 53, and a tilting frame 56 that can swing freely around the swinging shaft 56a is arranged. The tip of the tilting frame 56 can be controlled to swing between two positions, a horizontal position and a downwardly tilted position, by an air cylinder 56b. Further, on the top surface of the tip of the inclined frame 56, a group of roving bobbins B of a predetermined number,
Rotating pegs 57, 57... corresponding to B... are provided in a protruding manner. Here, when the upright piece 53 is in the vertical position and the inclined frame 56 is in the horizontal position, each rotating peg 57 is inserted from the lower end surface of the corresponding roving bobbin B in the axial direction, and The lower end of B can be rotatably restrained. Further, when tilting the tilting frame 56, each rotating peg 57 is removed from the corresponding roving bobbin B, and the roving bobbin B can be released from the restraint.

Now, if high pressure air is supplied to the air port PT2 communicating with the pressure chamber 31d of the air cylinder 31 and the rod 31c is shortened, the movable frame 20 will be retracted to the retraction limit. Therefore, the flocked belt 12 is in a state where it has a large distance from the roving bobbins B, B, etc. (solid line in FIG. 1). At this time, the guide roller 54 at the tip of the horizontal piece 52 of the swinging frame 50 moves along with the swinging frame 20 to the high horizontal portion 2 on the front side of the step cam 23 which is at the backward limit.
3a, the tip of the horizontal piece 52 is raised high, and therefore the upright piece 53 is inclined outward in the direction away from the roving bobbins B, B, . However, at this time, the rod of the air cylinder 56b on the upright piece 53 is shortened to tilt the inclined frame 56 from the horizontal position.

At this time, the flocking belt 12, the swinging frame 50
Since the upper roller 55, the catch lever 55b, and the rotating peg 57 do not interfere with the roving bobbins B, B, etc., they drive the carrier C1 of the bobbin conveying device C to convey the remainder of a group of a predetermined number of yarns. The roving bobbins B, B, .

Next, air port PT of air cylinder 31
When high pressure air is introduced from 1 and the rod 31c is extended, the moving frame 20 starts moving forward (FIG. 3). As a result, the step cam 23 also moves forward, so that the guide roller 54 of the horizontal piece 52 moves the step cam 23 forward.
3 and pushes down the horizontal piece 52, the upright piece 53 rises in the vertical direction (arrow K2 in FIG. 1). Therefore,
When the upright piece 53 is fully erected, the air cylinder 56b is driven to bring the inclined frame 56 to the horizontal position, and the rotating peg 57 is inserted into the lower end surface of each corresponding roving bobbin B. At the same time, the roller device 55 also comes into contact with the upper end of the roving bobbin B and restrains it. Therefore, although the roving bobbins B, B, etc. are restrained in their positions at both ends, they are still free to rotate.

On the other hand, as the movable frame 20 moves forward, the flocking belt 12 also moves forward (arrow K1 in FIG. 1), and its surface finally comes into contact with the remaining rovings on the roving bobbin B. The ends of the threads are captured by the hairs of the flocked belt 12, and can be continuously unwound and removed thereafter. Note that here, the rear horizontal portion 23b of the stepped cam 23
is made sufficiently long to ensure a sufficient forward stroke of the movable frame 20 after the upright piece 53 stands up vertically.

If the remaining rovings are removed in this way,
As the apparent diameters of the roving bobbins B, B... decrease, the moving frame 20 receives a large driving force from the high pressure air supplied to the air port PT1 of the air cylinder 31 and continues to move forward accordingly. (Driving force P1 in FIG. 5).

Now, the position where the remaining roving on the roving bobbin B is removed and the surface of the flocked belt 12 directly contacts the peripheral wall of the roving bobbin B is determined as the forward limit of the moving frame 20 (FIG. 4). Therefore, moving frame 2
A switching point is provided before the 0 reaches the forward limit, and from the switching point to the forward limit, the air supplied to the air cylinder 31 is supplied to the air port PT.
Air port instead of high pressure air for 1
By switching to low pressure air for PTa1, the driving force of the moving frame 20 in the forward direction is
It can be switched to a smaller value (driving force P2 in FIG. 5). Here, the switching point can be easily and arbitrarily set by installing a limit switch (not shown) in the middle of the forward stroke of the moving frame 20 or the stroke of the air cylinder 31 to achieve this. It can be set in the following position.

As described above, by switching the driving force of the movable frame 20 to a small value, the flocked belt 1
Since the surface of 2 can be made to come into soft contact with the hard peripheral wall of the roving bobbin B, the degree of wear and tear on the hair of the flocked belt 12 can be significantly reduced.

In this way, when the removal of the remaining roving from the roving bobbins B, B, etc. is completed, high pressure air is supplied to the air port PT2 of the air cylinder 31 to move the movable frame 20 backward to the backward limit, and to raise it up. The pieces 53 may be returned to their original inclined state, and the bobbin conveying device C may carry out the roving bobbins B, B, . . . . However, prior to driving the air cylinder 31, the air cylinder 56b operates the inclined frame 5.
6 is tilted and the rotary peg 57 is removed from the lower end surface of the roving bobbin B to release the restraint of the lower end of the roving bobbin B. Further, the carrier C1 of the bobbin conveying device C carries a large number of roving bobbins B, B...
Needless to say, since the roving bobbins B, B, etc. are transported by hanging them, new roving bobbins B, B, etc. with the remaining roving threads can be carried in simultaneously with the unloading of the roving bobbins B, B, etc. Nor.

In the above description, when the movable frame 20 moves forward, the method of switching the driving force at the switching point is to use the tandem air cylinder 31.
In addition to this, any other arbitrary means may be used. For example, an air cylinder that generates a large drive force and an air cylinder that generates a small drive force may be installed separately in parallel, or the motor may be A drive mechanism using a gear mechanism may also be constructed. Furthermore, instead of using two types of air, high pressure air and low pressure air, to be supplied to the tandem air cylinder 31, a pressure chamber 3 serving as an auxiliary chamber is used.
It is also possible to reduce the inner diameter of the bore 1e, or to use both in combination.

In addition, the roving bobbins B, B... are connected to the bobbin hanger C.
In addition to being rotatably suspended from 2, the upper and lower ends may be rotatably held by rotating pegs or the like. Furthermore, the switching point for switching the driving force of the movable frame 20 can be set at any position up to the forward limit of the movable frame 20, as long as the remaining roving can be smoothly captured and rewound by the flocked belt 12. shall be.

Effects of the Invention As explained above, according to the present invention, when the moving frame carrying the flocking belt is moved forward toward the roving bobbin, the moving frame is driven by a smaller force after the switching point than at the start of the forward movement. By receiving the force, the moving frame can receive a sufficiently large driving force at the beginning of forward movement to smoothly start the forward movement, while at the same time, in the final stage of removing the remaining rovings. teeth,
Since only a small driving force is being received, the force with which the flocking belt is pressed against the roving bobbin is also small, and the bristles on the flocking belt do not come into strong contact with the hard peripheral wall of the roving bobbin, reducing wear and tear on the flocking belt. It has the excellent effect of being able to be made much smaller.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment; Figure 1 is an explanatory side view of the entire assembly, Figure 2 is a conceptual diagram of the configuration of the air cylinder, Figures 3 and 4 are illustrations of the operating state, and Figure 5 is an explanatory diagram of the operating state. is an operating characteristic diagram. B...Roving bobbin, P1, P2...Driving force, 12...
Flocking belt, 20...Movement frame.

Claims (1)

[Claims] 1. A flocked belt of a residual coarse system removing device that brings a running flocked belt into contact with a plurality of rotatably held roving bobbins, and removes residual rovings on the roving bobbins by unwinding them. In the moving device, the flocking belt is mounted on a moving frame that can freely move back and forth with respect to the roving bobbin, and when moving forward in the direction of the roving bobbin, the moving frame starts moving forward after a switching point. A flocking belt moving device for a residual roving removing device, characterized in that it receives a driving force smaller than that of the flocking belt moving device.