JPS5943569B2 - Tube change method and device for spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe changing method and device for a spinning machine.

Generally, an automatic pipe changer of the type that moves along the front of the spinning machine table includes an empty bobbin storage hopper, an empty bobbin supply device,
Since mechanisms such as a full bobbin sorting device are included in the main body of the device, the structure is very complicated and failures are common, and the main body of the device is heavy, making it difficult to handle and adjust.

Furthermore, there is a drawback that it is difficult to automate the processes before and after tube change in a spinning machine, such as transporting empty bobbins to the machine stand and transporting full bobbins from the machine stand.

On the other hand, the type of automatic tube changer that processes all the spindles fixed to the spinning machine stand at once does not have the mechanical disadvantages of the automatic tube changer mentioned above, and in particular, it Empty bobbins are prepared at the front of the machine by a transfer device that can be moved along the line, and the doffed full bobbins are transferred to the subsequent process by the same transfer device, making it relatively easy to automate or save labor in the pre- and post-processes. However, in order to process all the spindles at once, it is necessary to strictly design the longitudinal dimensions of the machine, and not only is a fairly high precision required for each part, but it is also necessary to set the spindle per spinning machine. Therefore, it is expensive, and it is also uneconomical because it is used infrequently.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and device for changing tubes in a spinning machine that eliminates the drawbacks of mobile and fixed automatic tube changing devices and retains only the advantages.

An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 4. In the drawings, reference numeral 1 denotes a large number of spindles erected on a frame M of a spinning machine, as shown in FIG. They are arranged at a constant pitch in the longitudinal direction of M.

When the winding is full, there is a full bobbin 2 on this spindle 1.

3 is a transfer device provided below the spindle 1 so as to extend in the arrangement direction of the spindle 1, and is movable along the machine base M.

A number of pegs 4 are installed on the conveyor belt 5 of the transfer device 3, and are lined up at the same pitch as the spindles 1 on the machine M.

When the winding is full, there is an empty bobbin 6 on each peg 4.

The tube changing device of the present invention can simultaneously exchange empty bobbins and full bobbins for one or more spindles, but as is clear from FIG. 3, in this embodiment, eight spindles Empty bobbin and full bobbin are exchanged at the same time.

Further, although the pipe changing device of the present invention moves along the spindle row of a spinning machine having spindle rows on both sides, only the spindle row on one side will be described below.

Reference numeral 7 denotes a wagon of the pipe switching device, and 8 denotes a pair of threaded rods provided vertically on both sides of the front part (machine M side) of the wagon 7, which are each rotatably supported by a pair of upper and lower bearings 9. ing.

Reference numeral 10 denotes a pulley fixed to the lower end of the threaded rod 8, and a pulley 12 of a motor 11 fixedly installed behind it and capable of forward and reverse rotation.
A belt 13 is hung between the two.

These pair of threaded rods 8 are simultaneously rotated in the same direction.

Reference numeral 14 denotes a pair of lower lifting blocks which are screwed through the screw rods 8 in the vertical direction, and are moved up and down in synchronization with each other by the rotation of both screw rods 8.

Reference numeral 15 denotes an arm attached so as to penetrate each block 14 in the front and back directions, and is capable of sliding horizontally back and forth with respect to the block 14.

Reference numeral 16 denotes a coil spring having one end attached to a part of the outside of the painter's section lifting block 14, and the other end attached to each arm 15.
It is attached to the outside of the rear end.

Therefore, each arm 15 is always urged by this coil spring 16 so as to protrude forward.

A pair of cam followers 17 are rotatably attached to the rear end of each arm 15, and both are located on the inner side of the arm 15.

Reference numeral 18 denotes a stopper protruding from a part of the rear part of each arm 15, which engages with the lower lifting block 14 when the arm 15 moves forward to restrict this movement within a certain range. be.

Reference numeral 19 denotes a dotting bar provided to span between the front ends of both the arms 15, and 20 denotes eight lower bobbin gripping devices attached to the front surface of the dotting bar 19, which are attached to the spindle on the machine base M. 1 and are lined up in the arrangement direction of the same spindle 1 at the same pitch.

Each bobbin gripping device 20 is located at the spindle 1 position and the peg 4 on the conveyor belt 5 in the front-rear direction as shown by the two-dot chain line in FIG.
Corresponding to this position, when it moves backward, it is located at a position that is retracted to the rear, as shown by the solid line in the same figure.

Reference numeral 21 denotes a pair of large cam members that are vertically fixed so as to be in contact with the cam followers 17 inside each arm 15, and are located on the front side of the cam followers 17.

Reference numeral 22 denotes a vertical first cam surface formed on the rear surface of the lower end of each dog cam member 21, and is adapted to move the lower bobbin gripping device 20 onto the bed 4.

23 is a vertical third cam surface formed on the upper part of the large cam member 21, and is continuous from the upper end of the first cam surface 22 via a second cam surface 24 which is sloped upward. , the lower bobbin gripping device 20 is retracted rearward from the peg 4 position.

Reference numeral 25 denotes a vertical fifth cam surface formed on the upper front surface of the large cam member 21, and a fourth cam surface that slopes upward from the upper end of the third cam surface 23 to the front of the upper surface of the large cam member 21. 26
The lower bobbin gripping device 20 is connected to the machine M.
It is designed to be moved onto spindle 1 of.

Incidentally, reference numeral 27 is an auxiliary cam provided in opposition to the first cam surface 22 of each dog cam member 21, and is used to accurately align the lower bobbin gripping device 20 on the peg 4.

As shown in FIG. 3, 28 is a pair of threaded rods erected inwardly and parallel to both threaded rods 8,
Each is rotatably supported by a pair of upper and lower bearings 29.

The threaded rod 28 is located in the upper half of the wagon 7, and its upper end is located above the upper end of the outer threaded rod 8.

Note that this screw rod 28 is shorter than the screw rod 8 described above.

30 is a pulley fixed to the upper end of the threaded rod 28,
A pulley 3 of a motor 31 that is fixedly installed in front of the motor 31 and can be rotated forward and backward
A belt 33 is hung between the two.

Both threaded rods 28 are rotated simultaneously in the same direction.

Reference numeral 34 designates a pair of upper lifting blocks similar to the lower lifting block 14 which are screwed vertically through each threaded rod 28, and are moved up and down simultaneously by the rotation of both threaded rods 28.

Reference numeral 35 denotes an arm attached so as to penetrate each upper lifting block 34 in the front and back directions, and is capable of sliding horizontally back and forth with respect to the block 34.

The length of this arm 35 is the same as the length of the arm 15 of the lower lifting block 14.

A coil spring 36 has one end fixed to a part of the inside of each upper lifting block 34, and the other end fixed to a part of the inside of each upper lifting block 34.
It is attached to the inside of the rear end.

Therefore, like the arm 15 of the lower lifting block 14, this arm 35 is always urged forward by the coil spring 36.

A pair of cam followers 37 are rotatably attached to the rear end of each arm 35, and both are located on the outside of the arm 35.

Reference numeral 38 denotes a stopper protruding from a part of the rear part of each arm 35, which engages with the upper lifting block 34 when the arm 35 moves forward to limit this movement within a certain range. ing.

39 is a connecting rod stretched between the front ends of both arms 35; 40
8 are eight upper bobbin gripping devices attached to the front surface of the connecting rod 39, and are lined up in the same manner as the lower bobbin gripping device 20 at the same pitch.

Note that the upper bobbin gripping device 40 is adapted to grip only empty bobbins.

The bobbin gripping device 40 corresponds to the spindle 1 position when the arm 15 moves forward as shown by the two-dot chain line in FIG. This corresponds to the retracted position of the gripping device 20.

Note that, at this time, the upper bobbin gripping device 40 is located above the lower bobbin gripping device 20.

Reference numeral 41 designates a pair of small cam members that are erected and fixed so as to be in contact with the cam followers 37 on the outside of each arm 35, and are located on the front side of the cam followers 37.

The small cam member 41 corresponds to the upper part of the large cam member 21 in the front-rear direction, and is located in the upper half of the wagon 7 in the same way as the screw rod 28 in the vertical direction, and its lower part corresponds to the upper part of the large cam member 21. It overlaps the upper end of the cam member 21.

42 is a vertical first cam surface formed on the rear surface of each small cam member 41, and is configured to move the upper bobbin gripping device 40 onto the lower bobbin gripping device 20 in the retracted position.

A second cam surface 43 is formed on the upper surface of the small cam member 41 and is inclined forward, and is continuous from the upper end of the first cam surface 42, as shown by the solid line in FIG. The upper bobbin gripping device 40 is moved upward.

In this upward movement position, the lower end of the empty bobbin 6 gripped by the upper bobbin gripping device 40 is further above the uppermost movement position of the lower bobbin gripping device 20, as shown in FIG.

Reference numeral 44 denotes a vertical third cam surface formed on the front surface of the small cam member 41, which is continuous from the upper end of the second cam surface 43, and is connected to the upper bobbin as shown by the two-dot chain line in FIG. The gripping device 40 is adapted to be moved onto the spindle 1.

In addition, 47 is a pressing member for pressing and moving the cam follower 17 from the fifth cam surface 25 of the large cam member 21 to the fourth cam surface 26, and 48 is a pressing member for moving the cam follower 37 to the small cam member 4.
This is a similar pressing member for pressing and moving from the top of the third cam surface 44 of the first cam to the top of the second cam surface 43.

Next, the effects of the pipe switching device configured as described above will be explained.

Now, when the bobbin is full as shown in FIG. In order to replace the pipe, the wagon 7 of the pipe changing device is moved along the machine M to a predetermined position by the drive mechanism, and the pipe changing operation is started at this position.

At the time of tube change, the upper and lower shoe bobbin gripping devices 40 and 20 are initially in standby positions as shown in FIG. 4a.

In this state, when the screw rods 8.28 are rotated in the forward direction by the motors 11, 31, both the upper and lower lifting blocks 34.14 are moved downward.

When the upper lifting block 34 moves downward, the cam follower 37 at the rear end of the arm 35 moves downward along the first cam surface 42 of the small cam member 41 as shown by the two-dot chain line in FIG. 2 (FIG. 4b). Therefore, the arm 35 protrudes rearward against the elasticity of the coil spring 360, as shown by the solid line in FIG.

Therefore, the upper bobbin gripping device 40 is in the retracted position as shown in solid lines in FIG. 1 and as shown in FIG. 4, c.

At this time, the rotation of the screw rod 28 is stopped and the upper bobbin gripping device 40 is placed on standby.

Also, when the lower lifting block 14 is moved down, the cam follower 17 of the arm 15 is moved as shown by the two-dot chain line in FIG.
moves downward along the third cam surface 23 of the large cam member 21, then moves downward obliquely along the second cam surface 24, and then moves downward along the first cam surface 22 (first cam surface 23). 4b), the arm 15 protrudes forward due to the elasticity of the coil spring 16.

Therefore, the lower bobbin gripping device 20 reaches the forward movement position as shown by the two-dot chain line in FIG. 1 and in FIG.

Note that when the arm 15 projects forward, its stopper 18 engages with the lower lifting block 14.

After the lower bobbin gripping device 20 grips the empty bobbin 6, the screw rod 8 is reversed.

Then, the lower lifting block 14 moves upward, and the cam follower 17 passes through the first cam surface 22 and the second cam surface 24 of the large cam member 21 and moves to the second cam surface as shown by the solid line in FIG. The upper end of the three-cam surface 23 is reached.

In this case, the arm 15 projects rearward.

Therefore, the lower bobbin gripping device 20 moves upward and backward while gripping the empty bobbin 6, and corresponds to the upper bobbin gripping device 40 immediately below the above-mentioned (FIG. 4b) standby position.

At this time, the rotation of the screw rod 8 is temporarily stopped.

When the lower bobbin gripping device 20 corresponds to the upper bobbin gripping device 40, as shown in FIG.
The upper end of the empty bobbin 6 held at 0 is gripped by the upper bobbin gripping device 40, and the empty bobbin 6 is delivered to the upper bobbin gripping device 40 (FIG. 4C).

When the delivery is completed, both screw rods 28, 8 are reversed.

Then, due to the rotation of the screw rod 28, the upper lifting block 34
is moved upward from the solid line position in Figure 1, and its cam follower 3
7 passes through the first cam surface 42 as shown by the two-dot chain line in FIG. 2, and then reaches the upper end of the second cam surface 43 as shown by the solid line in the same figure.

Therefore, the upper bobbin gripping device 40 is moved upward all at once while gripping the empty bobbin 6 (FIGS. 4d and 4e).

At this time, the rotation of the screw rod 28 is stopped and the upper bobbin gripping device 40 is held in an upwardly moving state.

When the screw rod 8 is reversed, the lower lifting block 14 is moved upward from the solid line position in FIG. It rolls onto the fourth cam surface 26 at the upper end and reaches the upper end.

At this time, the lower bobbin gripping device 20 is located below the lower end of the empty bobbin 6 gripped by the upper bobbin gripping device 40 so as not to interfere with it.

When the cam follower 17 completely passes forward over the fourth cam surface 26, the threaded rod 8 is rotated in the normal direction.

Then, the lower lifting block 14 begins to move downward again, and in this case, the cam follower 17 of the arm 15 of the block 14 rolls downward along the fifth cam surface 25 of the large cam member 21.

Therefore, the arm 15 projects forward and the lower bobbin gripping device 20 corresponds to the position of the spindle 1 on the machine M.

Furthermore, since the stopper 18 is engaged with the lower lifting block 14 when the arm 15 protrudes, the arm 15 does not protrude more than necessary.

Lower bobbin gripping device 2 moved downward in correspondence with spindle 1
0 grips the upper end of the full bobbin 2 on the spindle 1 as shown by the solid line in FIG. 2 and in FIG. 4e.

At this time, the screw rod 8 is switched to reverse rotation. Then, the lower bobbin gripping device 20 first moves upward along the fifth cam surface 25 while gripping the full bobbin 2, and when it reaches the upper end, it is pressed to move the cam follower 17 onto the fourth cam surface 26. The member 47 is activated to push the cam follower 17 backward.

After that, when the threaded rod 8 is switched to normal rotation, the lower bobbin gripping device 20 continuously moves downward along the fourth cam surface 26, the third cam surface 23, and the second cam surface 24, and finally moves down to the first cam surface 22. (Fig. 4 f tg).

Along the first cam surface 22, the lower bobbin gripping device 20 corresponds to the peg 4 position of the transfer device 30 as shown by the two-dot chain line in FIG. is transferred onto peg 4 (Figure 4g).

On the other hand, when the screw rod 28 is rotated in the normal direction while the lower bobbin gripping device 20 is moving downward along the third cam surface 23 of the large cam member 21 while gripping the full bobbin 2, the upper lifting block 34 is lowered. As the cam follower 37 begins to move, the cam follower 37 rolls downward along the third cam surface 44 of the small cam member 41 as shown by the two-dot chain line in FIG.
0 moves downward while holding the empty bobbin 6.

In this case, the stop 38 on the arm 35 is engaged in a part of the upper lifting block 34, and the upper bobbin gripping device 40 corresponds to the position of the spindle 1 below it.

When the upper bobbin gripping device 40 is moved down in correspondence with the spindle 1, the empty bobbin 6 on the upper bobbin gripping device 40 is inserted into the spindle 1 on the machine stand (FIG. 4g).

At this time, when the screw rod 28 is reversed, the upper bobbin gripping device 40 is moved upward along the third cam surface 44 and reaches its upper end position as shown by the solid line in FIG.

At this point, the rotation of the threaded rod 28 is stopped, and the cam follower 37
The pressing member 48 is operated to move the cam follower 37 onto the second cam surface 43, and after the cam follower 37 protrudes rearward, the threaded rod 28 is moved again.
When the upper bobbin gripping device 40 rotates in the normal direction, the second cam surface 4
Descend along 3.

Therefore, the upper bobbin gripping device 40 is on standby without gripping the empty bobbin 6 in preparation for the next tube change operation (h) in FIG.

Further, when the lower bobbin gripping device 20 moves the fully loaded bin 2 onto the peg 4 and then reverses the screw rod 8, the lower bobbin gripping device 20 moves the first cam surface 22 and the second cam surface of the large cam member 21. 24 and the third cam surface 23, and retreat as shown by the two-dot chain line in FIG.

At this point, the rotation of the threaded rod 8 is stopped, and the lower bobbin gripping device 20 is put on standby without gripping the full bobbin 2 (FIG. 4h), in preparation for the next tube change operation, like the upper bobbin gripping device 40.

With this, one tube change operation is completed, and the upper and lower bobbin gripping devices 40.20 are in the same position as at the start of the tube change as shown in FIG. 4g.

Note that the full bobbin 2 transferred onto the transfer device 3 by the above-mentioned tube change operation is recovered by the transfer device 3.

In this way, empty bobbins 6 for 8 spindles 1
When the replacement of the full bobbin 2 is completed, the wagon 7 moves by eight pitches along the machine base M in order to replace the next eight spindles 1, and repeats the same operation.

In this way, in the pipe changing device of the present invention, the spindle 1
The full bobbin 2 extracted from above is not stored in the wagon 7 but is transferred onto the transfer device 3, and the empty bobbin 6 to be inserted onto the spindle 1 is also not stored in the wagon 7. There is no need to install a storage device for empty bobbins 6 and full bobbins 2 in the wagon 7.

Therefore, the structure is simpler and the weight is smaller than the conventional wagon-type tube changer equipped with such a storage device.

Furthermore, the maintenance of the device becomes easier and the manufacturing cost becomes cheaper, making it more economical.

Furthermore, compared to a full-spindle-simultaneous pipe changing device, the pipe changing device of the present invention is of a mobile type, and one device can handle a large number of spinning machines, thereby increasing its operating rate.

Therefore, the cost of the spinning machine and the combined force can be kept low.

Further, since the pipe switching device is a mobile type, when using a simultaneous pipe switching device, there is no need to strictly design the longitudinal dimension of the machine M.

In addition, in the tube changing device of the present invention, two bobbin gripping devices are provided, upper and lower, and these are made to perform separate operations. Therefore, both bobbin gripping devices can each perform efficient movements, and can quickly avoid unreasonable movements. Bobbins can be replaced without any hassle.

Another embodiment of the present invention will now be described with reference to FIG. 5, in which upper bobbin gripping device 40. For installation, the connecting rod 39 is pivotally attached to the arm 35 so as to be able to rotate upward, and the upper surface of the connecting rod 39 is formed into an upwardly slanted shape to serve as the engagement surface 45. When the bobbin gripping device 40 moves upward to the upper end of the small cam member 41, the engagement pin 4 is placed in contact with the engagement surface 45 of the connecting rod 39.
There are 6.

In this way, the upper bobbin gripping device 40 receives the empty bobbin 6 in the upright position, as shown by the two-dot chain line in FIG. 5, and then moves upward along the small cam member 41.

When reaching the vicinity of the upper end, the engaging pin 46 hits the engaging surface 45 of the connecting rod 39, so the upper bobbin gripping device 40 rotates upward together with the connecting rod 39, as shown by the solid line in FIG. be done.

At this time, the empty bobbin 6 is in a horizontal state. Therefore, in this case, unlike the above-mentioned embodiment in which the empty bobbin 6 is gripped vertically and held in the upward movement position, the amount of movement of the upper bobbin gripping device 40 is reduced and only the lower end position of the empty bobbin 6 is held. can be held sufficiently high to prevent interference with the full bobbin 2.

That is, the movement stroke of the upper bobbin gripping device 40 can be shortened, and the height of the small cam member 41 and, by extension, the height of the wagon 7 can be lowered.

As described above in detail, the present invention extracts a full bobbin from the spindle of a spinning machine and transports it onto a transfer device that is movable along the machine stand, while empty bobbins on the transfer device are transported onto the spindle and transferred thereto. In the plug-in tube changing method, the empty bobbin on the transfer device is gripped by a lower bobbin gripping device and transferred upward, and the empty bobbin is transferred to an upper bobbin gripping device separate from the lower bobbin gripping device. The device temporarily holds the bobbin at the top of the wagon, and while the bobbin is being held, the lower bobbin gripping device pulls out the full bobbin on the spindle and transfers it onto the transfer device, and at the same time holds it at the top of the wagon. By inserting the empty bobbin into the spindle, the structure can be simplified and maintenance can be made easier, so this invention is excellent for industrial use as a spinning machine pipe changing method and device. .

[Brief explanation of the drawing]

FIGS. 1 and 2 are side views of a pipe switching device embodying the present invention, FIG. 3 is an enlarged plan view, and FIGS. FIG. 5 is a partially enlarged side view showing a separate upper bobbin gripping device of the present invention.

Claims (1)

[Claims] 1. Remove a full bobbin from the spindle of a spinning machine and transport it onto a transfer device that is movable along the machine stand.Meanwhile, transport an empty bobbin on the same transfer device onto the spindle and insert it into it. In the Shishida pipe changing method, the empty bobbin on the transfer device is gripped by a lower bobbin gripping device and transferred upward, and the empty bobbin is transferred to an upper bobbin gripping device separate from the lower bobbin gripping device, and then the empty bobbin is transferred to the upper bobbin gripping device, which is separate from the lower bobbin gripping device, and then the empty bobbin is transferred upwardly by the lower bobbin gripping device. The bobbin is temporarily held at the upper part of the wagon, and while the bobbin is being held, the lower bobbin holding device extracts the full bobbin from the spindle and transfers it onto the transfer device, and the bobbin is held at the upper part of the wagon. A tube change method for a spinning machine, characterized in that an empty bobbin is inserted into a spindle. 2. A tube changing device which extracts a full bobbin from the spindle of a spinning machine and transports it onto a transfer device that is movable along the machine stand, while transporting an empty bobbin on the transfer device onto the spindle and inserting it into this. , a pair of upper and lower bobbin gripping devices, a pair of elevating mechanisms for vertically moving each bobbin gripping device separately, and a pair of cams for vertically moving each bobbin gripping device separately during its vertical movement. 1. A tube changing device for a spinning machine, characterized in that each bobbin gripping device is configured to perform the following operations (a) to (a) through the lifting mechanism and the cam mechanism. (a) The lower bobbin gripping device grips the empty bobbin on the transfer device and transfers it upward. (b) This empty bobbin is received by the upper bobbin holding device and temporarily held at the upper part of the wagon. (c) While the bobbin is being held, the lower bobbin gripping device extracts the full bobbin from the spindle and transfers it onto the transfer device. 2) Insert the empty bobbin held at the top of the wagon by the upper bobbin gripping device into the spindle. 3 In claim 2, each lifting mechanism consists of a pair of screw rods rotated by a motor, and a pair of lifting blocks that are screwed together with the screw rods and have a bobbin gripping device attached via an arm. A pipe changing device for a spinning machine characterized by the following. 4. Claim 2 is characterized in that each cam mechanism consists of a pair of cam members and a cam follower attached to the bobbin gripping device via an arm so as to roll along the cam surface of the cam member. Tube changing device for spinning machines. 5. The tube changing device for a spinning machine according to claim 2, wherein the upper bobbin gripping device is provided with an inversion mechanism for inverting the empty bobbin received from the lower bobbin gripping device to a horizontal state.