JP2955427B2 - Tag tray transport device in spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting an egg tray in a spinning machine, and more particularly to an apparatus for transporting an egg tray by cooperation of an endless transport belt and a linear guide member. It is.

[0002]

2. Description of the Related Art In recent years, in a spinning factory, a spinning process and a winder process are connected by a conveying means, a full bobbin doffed in the spinning process is conveyed to a winder process, and a yarn is wound in the winder process. A method is often employed in which the empty bobbin after being conveyed is again conveyed to the spinning process and is recycled.
As a method of transporting the bobbin, a method of transporting a peg tray to which a bobbin is mounted on a transport belt is advantageous in terms of simplification of the mechanism as compared with a method using a belt conveyor.

[0003] As a mobile type refilling device in a spinning machine, a device for introducing a peg tray into a refilling device and exchanging an empty bobbin with a full bobbin is disclosed in Japanese Patent Laid-Open No. 63-275.
No. 725, and Japanese Patent Application Laid-Open No. 1-312266. These pipe replacement devices are equipped with a transfer device that elastically presses the peg tray with one endless transfer belt and two guide members, and transfers the peg tray as the transfer belt moves. Also, JP-A 1-3
No. 14,737, JP-A-1-321268, etc., as an apparatus for transporting a peg tray equipped with a bobbin between a spinning machine and a winder, a cooperative action of an endless transport belt and two guide members. A transport device for transporting a tag tray has been proposed.

[0004] In these transfer devices, FIG.
As shown in the figure, a guide bracket 41 is fixed at appropriate intervals along the travel path of the transport belt 42.
The peg tray 44 is fastened so as to sandwich the peg 44a. The transport belt 42 is guided by a guide piece 45 and is urged by a leaf spring 46 toward the guide member 41. By arranging the guide member 41 in a twisted state with respect to the transport belt 42, the posture of the peg tray 44 sandwiched between the guide member 41 and the transport belt 42 can be freely changed. Further, the guide member 41 is formed of a wire having a circular cross section in order to enable the posture of the peg tray 44 to be changed smoothly. Since it is difficult to accurately drill a screw hole at a predetermined position of the guide member 41 having a circular cross section, the guide member 41 is fixed to the support bracket 43 by welding, and steel (stainless steel) is used as a material. On the other hand, peg tray 44
Is made of synthetic resin from the viewpoint of weight reduction and manufacturing cost.

[0005]

At the point where the conveyor belt 42 travels upward, the weight W of the peg tray 44 and the bobbin B acts on the peg tray 44 as shown in FIG. 7B. Further, the pressing force P by the force of the leaf spring 46 acts on the bottom surface of the peg tray 44 via the transport belt 42 in a direction of pressing the peg tray 44 against the guide member 41. The reaction force of the pressing force P acts on the upper surface of the peg tray 44 from the guide member 41. The frictional force F1 with the guide member 41 is provided on the upper surface of the tag tray 44.
A frictional force F2 with the conveyor belt 42 acts on the bottom surface. Assuming that the friction coefficient between the guide member 41 and the peg tray 44 is μ ₁ and the friction coefficient between the conveyor belt 42 and the peg tray 44 is μ ₂ , the frictional forces F 1 and F 2 are expressed by the following equations.

[0006] _{F1 = μ 1 P F2 = μ} 2 P In order to peg trays 44 are moved integrally with the traveling of the conveyor belt 42, it is necessary to the following equation is established.

F1 + W <F2 However, in the conventional apparatus, since the cross-sectional shape of the guide member 41 is circular, the guide member 41 and the peg tray 44 are in linear contact, and the load is concentrated on the contact portion and wear at the portion proceeds. It's easy to do. Since the contact position between the guide member 41 and the peg tray 44 changes in a portion where the posture of the peg tray 44 is changed, the peg tray 44 is less likely to be worn as compared with a position where the peg tray 44 moves in a constant posture.

When the peg tray 44 made of polyacetal is used, the guide member 41 made of stainless steel is attached to the guide member 41 of FIG.
As shown in the figure, a flat portion 4 having a width of 1 mm
1a was formed. Further, the wear amount H was 0.3 mm. As the wear progresses, the pressing force P due to the force of the leaf spring 46 decreases, and the frictional force F2 of the conveyor belt 42, that is, the conveying force decreases. As a result, there is a problem that the peg tray transfer force is reduced at the rising portion of the peg tray 44 and the peg tray 44 is clogged.

In order to cope with a decrease in the conveying force due to the wear of the guide member 41, it is conceivable to increase the force of the leaf spring 46. However, if the force of the leaf spring 46 is increased, the frictional force F2 as the conveying force increases, and the frictional force F1 as the resistance also increases, which is not suitable for improving the transfer force. or,
There is also a problem that the abrasion of the guide member 41 becomes severe.

When the guide member 41 is made of steel and the peg tray 44 is made of polyacetal, the coefficient of friction is approximately 0.13, and the frictional force F1 is large. As a result, a slip may occur between the transport belt 42 and the peg tray 44 when the transport belt 42 travels, which may hinder the transfer of the peg tray 44. A similar problem also occurs when the material of the egg tray 44 is made of another resin, since the friction coefficient is generally larger than that of polyacetal.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to suppress the progress of abrasion of a guide member and to reduce the frictional force between the guide member and a peg tray to provide a long-term operation. It is an object of the present invention to provide a peg tray transport device in a spinning machine that can reliably transport a peg tray over the same.

[0012]

According to the present invention, in order to achieve the above-mentioned object, there is provided a tag tray transport device for transporting a tag tray by cooperation of an endless transport belt and a linear guide member. The cross-sectional shape of the guide member is a polygon other than the portion corresponding to the position change portion of the peg tray, and a combination of polyacetal and nylon as the material of the guide member other than the portion corresponding to the position change portion of the peg tray, or a combination thereof. A combination of resins having a friction coefficient equal to or less than the friction coefficient in the case of (1) was used.

[0013]

According to the present invention, the endless transport belt cooperates with an endless transport belt and a linear guide member to move integrally with the transport belt as the transport belt moves. At a portion corresponding to a position where the peg tray moves in a fixed posture, the guide member comes into surface contact with the peg tray because the cross-sectional shape of the guide member is polygonal. Therefore, the load per unit area acting on the guide member is reduced, and the wear of the guide member is reduced. Further, since the coefficient of friction between the guide member and the peg tray is smaller than the coefficient of friction of the conventional combination of steel and synthetic resin, the frictional force between the guide member and the peg tray is reduced. As a result, the conveyance force of the conveyance belt is improved, and the conveyance of the peg tray is performed smoothly.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment in which the present invention is embodied in a transfer device for a refilling machine which runs continuously along a spinning frame.
This will be described with reference to FIG. In this refilling machine, an empty bobbin placed on a conveyor device extending below the spindle rail is taken into the refilling machine together with the peg tray to perform a refilling operation.

The replacement machine 1 has basically the same configuration as that proposed by the applicant of the present invention (for example, Japanese Patent Application Laid-Open No. Hei 1-321266). As shown in FIG. 5, a conveyor device 3 extends below the spindle rail 2 of the spinning machine. The conveyor device 3 carries in the peg tray 4 with the empty bobbin e mounted thereon to a position substantially corresponding to the spindle 5 prior to the refilling operation, and unloads the peg tray 4 with the full bobbin f mounted thereon after the end of the refilling operation. The refilling machine 1 runs along the rail 6 by the action of a screw roller 8 which engages with a pin 7 protruding from the rail 6 at a predetermined interval.

On the side of the refilling machine 1 facing the spinning machine, there is provided a twist transfer device 9 as a tag tray transfer device. The twist conveying device 9 includes a conveying belt 10 that conveys the peg tray 4 and a pair of linear guide members 11 disposed along a traveling path of the conveying belt 10. The conveyor belt 10 has a traveling path that runs substantially parallel to the conveyor device 3, a part that runs parallel to the lower part of the spindle 5 at the same height position, and a part above the full bobbin f inserted on the spindle 5. It is wound around a large number of guide pulleys 12 so as to have a portion running parallel to the spindle rail 2, and is wound around a drive pulley 13. The drive pulley 13 is fitted to a drive shaft of a motor 14 disposed below the refilling machine 1, and a portion of the conveyor belt 10 running in parallel with the transport device 3 is moved in the same direction as the refilling machine 1 when refilling. They are driven in the same direction.

A peg tray take-in plate 15 and a peg tray delivery plate 16 are provided on both front and rear sides in the traveling direction of the tube changing machine 1 with the motor 14 interposed therebetween. The peg tray take-in plate 15 and the peg tray delivery plate 16 are configured to be pivotally disposed between an operation position where the peg tray 4 can be engaged with the peg tray 4 on the conveyor device 3 and a standby position where the peg tray 4 cannot be engaged.

A pair of guide pieces 17 for guiding the transport belt 10 to travel along a predetermined transport path are fixed to the wall surface of the tube changing machine 1 via a support plate 18 at appropriate intervals. . As shown in FIG. 1 and FIG. 3 (b), the flat belt constituting the transport belt 10 has a three-layer structure including a pair of rubber layers 10a having a large friction coefficient and a sliding contact layer 10b disposed between the rubber layers 10a. The structure is formed. The sliding contact layer 10b is formed of a hard material such as nylon having a small coefficient of friction. At a position where the transport belt 10 travels in the vertical direction, a leaf spring 18a is fixedly disposed on the support plate 18 at a position corresponding to the concave portion 17a formed in the guide piece 17 while being pressed against the sliding contact layer 10b. ing.
The leaf spring 18a urges the conveying belt 10 in a width direction thereof, that is, toward the guide member 11 with a predetermined force. The leaf spring 18a does not directly contact the sliding contact layer 10b, but comes into contact with the sliding contact layer 10b at a contact portion (not shown) formed of a wear-resistant member such as ceramics.

The guide member 11 is disposed so as to sandwich the peg 4a of the peg tray 4 and to sandwich the peg tray 4 between the conveyor belt 10 and the guide member 11. Then, the peg tray 4 is moved integrally with the transport belt 10 as the transport belt 10 travels, and the guide member 11 is arranged in a twisted state with respect to the transport belt 10 so that the posture of the peg tray 4 can be freely changed. You can do it.

The guide member 11 is divided into a plurality of portions, and a straight portion and a curved portion are separately formed as shown in FIG.
The guide member 11 includes a bracket 19 fixed to a wall surface of the refilling machine 1 along a traveling path of the conveyor belt 10 and a connecting member 2.
It is fixed to 0. The guide member 11 provided at the position corresponding to the position change position of the peg tray 4, that is, the guide member 11 provided at A, B, C, and D in FIG. Guide member 11 to be provided
Has a square cross section. In addition, in the place corresponding to the empty bobbin removal / insertion device 23, which will be described later, the empty tray e is mounted with the empty bobbin e slightly inclined downward. However, since the degree is small, the cross-sectional shape of the guide member 11 at the position where the posture is changed before and after that may be square.

The guide member 11 having a rectangular cross section is fixed by screws 21 in a state in which the surface opposite to the side in contact with the page tray 4 is in contact with the back surface of the bracket 19. The guide member 11 having a circular cross section has a fitting groove 11a formed on the side surface as shown in FIG. 4A, and is fixed by screws 21 with the bracket 19 inserted into the fitting groove 11a. When connecting the guide member 11 having a square cross section and the guide member 11 having a circular cross section, as shown in FIG.
The connector 20 is fixed by screws 21 in a state where the connecting tool 20 is inserted into the fitting groove 11a formed at one end. A screw hole is not formed in the guide member 11 having a circular cross section, but a hole into which the screw 21 is inserted is formed. A screw hole into which the screw 21 is screwed is formed in the bracket 19.

On the other hand, when connecting the guide members 11 each having a rectangular cross section, as shown in FIG.
9, the guide member 11 is connected to the connecting member 2.
0 is fixed by a screw 21 in a state of contacting the rear surface of the “0”.
Note that, similarly to the case where the guide members 11 having different cross-sectional shapes are connected to each other, the guide members 11 may be fixed with the screws 21 in a state where the connecting tool 20 is inserted into the fitting groove 11a.

In order to reduce the frictional resistance between the guide member 11 and the peg tray 4, the material of the peg tray 4 is polyacetal, and the material of the guide member 11 is nylon. In this case, the dynamic friction coefficient is 0.092, which is sufficiently smaller than the conventional dynamic friction coefficient of 0.129 in which polyacetal is used for the material of the tag tray and steel is used for the material of the guide member. However, the values of the dynamic friction coefficients are based on literature values at a pressure of 0.83 kgf / cm ² and a moving speed of 6.2 cm / sec (the lubricity of plastic materials, their characteristics and application to sliding parts: written by Shosaburo Yamaguchi,
Published by Nikkan Kogyo Shimbun, May 30, 1981).

A traveling body 22 is supported at the center of the refill 1 so as to be slidable in the traveling direction of the refill 1. The traveling body 22 is equipped with an empty bobbin removal / insertion device 23 and a full bobbin removal / insertion device 24. The empty bobbin removal / insertion device 23 removes the empty bobbin e from the empty bobbin-equipped peg tray 4A conveyed above the full bobbin f on the spindle 5, and the spindle 5 from which the full bobbin f has been lifted.
To insert an empty bobbin e into The full bobbin pulling up / inserting device 24 functions to pull out the full bobbin f from the spindle 5 and insert the full bobbin f into the peg 4a of the peg tray 4 conveyed at the same height as the lower portion of the spindle 5. The traveling body 22 is reciprocated in the traveling direction of the tube changing machine 1, and the empty bobbin removal / insertion device 23 and the full bobbin removal / insertion device 24 are driven in synchronization with the reciprocation of the traveling body 22.

Next, the operation of the above-configured device will be described. When the spinning machine is stopped by the full-package command, the refilling machine 1 starts running at a constant speed from one end side of the machine frame, the motor 14 of the torsion conveying device 9 starts to drive, and the conveying belt 10 moves as shown in FIG. Traveling is started in the direction of the arrow in FIG.
In addition, the peg tray receiving plate 15 and the peg tray delivery plate 16 are arranged at the operation positions where they intersect with the conveyor device 3. The peg tray with empty bobbin 4A on the conveyor device 3 is arranged in a state of contact with the adjacent peg tray with empty bobbin 4A. Also, during the refilling operation, the peg tray 4A with the empty bobbin disposed at the other end of the machine base is restricted by the restricting member (not shown) so as to be immovable in the traveling direction of the refilling machine 1.

In this state, the peg tray taking-in plate 15 engages with the peg 4a of the peg tray 4A with the empty bobbin on the conveyor device 3 as the refilling machine 1 travels. In a state where the peg tray intake plate 15 is engaged with the peg 4a, the peg tray 4A with an empty bobbin is taken into the refill machine 1 with the traveling of the refill machine 1, and the bottom surface thereof is brought into a position where it engages with the conveyor belt 10. You will be guided. In the peg tray 4A with empty bobbin taken in the refilling machine 1, the peg 4a is introduced between the guide members 11 arranged near the peg tray take-in plate 15. Then, the empty bobbin e is moved integrally with the conveyor belt 10, and is changed from the vertical position to the substantially horizontal position according to the twisted shape of the guide member 11, and is conveyed above the refilling machine 1. Hereinafter, similarly, the peg tray 4A with the empty bobbin on the conveyor device 3
Are sequentially transferred onto the twist transfer device 9.

The peg tray with empty bobbin 4A conveyed above the empty bobbin removal and insertion device 23 is subjected to the position regulating action of the position regulating piece 25, and in this state, the empty bobbin e on the peg tray with empty bobbin 4A is removed with the empty bobbin. It is withdrawn from the peg 4a by the insertion device 23. Then, while the traveling body 22 moves to the opposite side to the traveling direction of the refilling machine 1, the full bobbin f on the spindle 5 is pulled out of the full bobbin pull-up and insertion device 2.
The empty bobbin e, which has been pulled up by 4 and removed by the empty bobbin removal and insertion device 23, is inserted onto the spindle 5. During this time, the peg tray 4 from which the empty bobbin e has been removed is conveyed to a height position corresponding to the spindle rail 2 by cooperation of the conveyance belt 10 and the guide member 11. Then, the full bobbin f pulled out by the full bobbin pulling up / inserting device 24 is inserted into the peg 4a by the position restricting action of the position restricting piece 26 on the traveling body 22. After the regulation of the position regulating piece 26 is released, the full bobbin-equipped tag tray 4B is transported by the twist transport device 9 to a position corresponding to the tag tray delivery plate 16. The peg tray 4B with full bobbins is moved by the action of the guide member 11 and the peg tray delivery plate 16 in the vicinity thereof.
Are changed from the horizontal state to the vertical state, and are transferred one by one onto the conveyor device 3.

The guide member 11 arranged at a position where the page tray 4 is conveyed without changing its attitude always has the same contact portion with the page tray 4. Guide member 1
In the case where the cross-sectional shape of 1 is circular, the load comes into line contact with the peggy tray 4 and the load is concentrated on a specific portion, so that it is easily worn. However, in this embodiment, since the cross section of the guide member 11 is quadrangular, the guide member 11 comes into surface contact with the PEG tray 4. Therefore, the load acting per unit area of the contact portion between the page tray 4 and the guide member 11 is reduced, and the guide member 11 is less likely to be worn. As a result, even when used for a long time, the displacement amount of the leaf spring 18a is maintained at a value that generates a predetermined pressing force, and the frictional force between the page tray 4 and the transport belt 10 is maintained at a predetermined value. Is reliably transported.

Since the guide member 11 is made of nylon and the peg tray 4 is made of polyacetal, the frictional force when the peg tray 4 moves in sliding contact with the guide member 11 is reduced. On the other hand, the tag tray 4 and the conveyor belt 1
Since the frictional force between zeros is large as in the related art, as a result, the transfer force of the conveyor belt 10 is improved. As a result, the page tray 4 is conveyed while reliably following the conveyor belt 10. In addition, since the frictional force between the page tray 4 and the guide member 11 is reduced, there is also an effect of suppressing the wear of the guide member 11.

Since the cross section of the guide member 11 is polygonal (square in this embodiment), it is easy to accurately form a screw hole at a predetermined position of the guide member 11. Screw 21. In this embodiment, the guide member 1
1 is formed so that the straight portion and the curved portion are separated from each other.
9 and the connector 20 can be removed. Therefore,
By changing the fixed state of the guide member 11 so that when the sliding surface with the page tray 4 is worn by long-term use, another surface other than the worn surface and the surface facing the worn surface becomes the sliding surface. The guide member 11 can be easily reused. or,
Since the guide member 11 is fixed to the bracket 19 or the connecting tool 20 by the screw 21, the alignment at the time of assembling becomes easier as compared with the case of welding.

Also, since the guide member 11 disposed at a position corresponding to the position of the dog tray 4 corresponding to the position change is made of resin (nylon), the guide member 11 has a hole into which the fitting groove 11a and the screw 21 are inserted. Is easier to form than in the case of steel. Therefore, even if the cross-sectional shape of the guide member 11 is circular, it is easy to assemble with screws.

The present invention is not limited to the above embodiment. For example, the cross-sectional shape of the guide member 11 may be another polygon such as a pentagon or a hexagon instead of a quadrangle.
Also, as a material of the page tray 4 and the guide member 11,
Instead of the combination of polyacetal and nylon, the peg tray 4 may be made of nylon and the guide member 11 may be made of polyacetal, or both the peg tray 4 and the guide member 11 may be made of nylon. Further, a resin of a combination having a friction coefficient equal to or less than the friction coefficient in the case of a combination of polyacetal and nylon, for example, a fluororesin, polyethylene or the like may be used. Further, instead of forming the entire guide member 11 with resin, a configuration in which a metal core is covered with resin may be adopted. Further, since the portion corresponding to the position change position of the egg tray 4 is hard to be worn, stainless steel may be used as its material as in the conventional case. Instead of separately forming the straight portion and the curved portion of the guide member 11, when the guide member 11 has the same cross-sectional shape, the straight portion and the curved portion may be integrally formed continuously. Further, Japanese Patent Application Laid-Open No. Hei.
No. 7, JP-A-1-321268, etc., may be applied to a bobbin transport device in a spinning winder.

[0033]

As described above in detail, according to the present invention, since the guide member having a constant contact portion with the tag tray comes into surface contact with the tag tray, the load acting on the contact portion of the guide member is dispersed. As a result, wear of the guide member is reduced, and the transport of the tag tray is ensured for a long period of time. In addition, since the frictional force between the tag tray and the guide member is reduced, the tag tray is easily slid with respect to the guide member, the transfer force by the transport belt is improved, and clogging of the tag tray hardly occurs.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a state in which a peg tray is held between a guide member and a transport belt of a twist transport device.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3A is a front view showing a support state of a guide member at a position where a peggy tray is transported upward, and FIG. 3B is a cross-sectional view of the transport belt.

4A is a schematic perspective view showing a support state of a guide member having a circular cross section, FIG. 4B is a schematic perspective view showing a connection state of a guide member having a circular cross section and a guide member having a polygonal cross section, and FIG.
FIG. 4 is a schematic perspective view showing a support state of a guide member having a polygonal cross section.

FIG. 5 is a schematic perspective view of a refill equipped with the apparatus of the present invention.

FIG. 6 is a schematic front view showing an arrangement of a twisting and conveying device mounted on the refilling machine.

7A is a cross-sectional view showing a support state of a guide member in a conventional apparatus, FIG. 7B is a side view showing a relation of a force acting when the egg tray is transported upward, and FIG. It is sectional drawing which shows the abrasion state of a member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Refilling machine, 4 ... Pegg tray, 4a ... Peg, 9 ... Twist conveying device as a tag tray conveying device, 10 ... Conveying belt, 11 ... Guide member, 11a ... Fitting groove, 19 ... Bracket, 20 ... Connection Tools, 21 ... screws.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-175934 (JP, A) JP-A-1-321268 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 67/00-67/08 D01H 9/18

Claims (1)

(57) [Claims] 1. A tag tray transporting device for transporting a tag tray by the cooperation of an endless transport belt and a linear guide member, wherein a cross-sectional shape of the guide member corresponds to a position change position of the peg tray. The other parts are polygonal, and a combination of polyacetal and nylon or a resin with a friction coefficient less than the friction coefficient of this combination is used as the material of the peg tray and the guide member other than the part corresponding to the position change position. Tray transport device in a spinning machine.