JPS6336370B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention collects a wide thin web that is stripped from a carding machine paper and is sent out from a pair of upper and lower delivery rollers, and guides it to a trumpet guide. The present invention relates to a web converging device for a carding machine which forms slivers by a carding machine.

Conventional technology Conventionally, a carding machine uses a stripping roller or the like to strip a wide, thin web from a cotton wool.
The web is then fed to a pair of upper and lower delivery rollers, and the wide, thin web sent out from the delivery rollers is formed into a sliver by passing through a trumpet guide and calender roller for convergence located on the downstream side. The feed roller and the calendar roller downstream thereof are arranged at a relatively long interval for web feeding work and web observation, and the wide thin web fed from the feed roller is placed over a relatively long distance. are transported and focused using only a slight frictional force due to the entanglement between fibers. For this reason, when the speed of the web fed out from this feeding roller reaches high speeds exceeding 100 meters per minute, the wide thin web fed out will be affected by the frictional force with the feeding roller, the influence of the surrounding air flow, and its own weight. As a result, a rippling phenomenon occurs, or a drooping phenomenon occurs at both ends of the web. As a result, thickness unevenness occurs in the web being focused, the edges of the web are disturbed, the quality of the spun sliver is greatly reduced, and eventually the web breaks and spinning becomes impossible. This phenomenon is noticeable in the case of cotton fibers, which have short fiber lengths and a low degree of entanglement between fibers, and in the case of such short fibers, wide thin webs are produced at high speeds exceeding 100 meters per minute. It could not be focused and formed into a sliver.

Therefore, as previously shown in Japanese Patent Application Laid-Open No. 53-139830, a web guide plate having a concave guide surface, such as an arcuate, flat, or prismatic guide surface, is provided in front of the feed roller. The wide, thin web sent out from the feed roller hits the concave guide surface of the web guide plate installed in front of it and changes its direction at right angles, and the web that has changed its direction is pushed against the concave guide surface of the web guide plate. It has been proposed that the trumpet be pulled out along the inner part toward the exit side and introduced directly into the trumpet guide.

Problems to be Solved by the Invention In the conventional device described above, since the web is focused and guided in the form of a sliver to the trumpet guide, it is possible to prevent the web from waving, etc. Since the sliver is introduced directly into the rear trumpet guide, the sliver that is drawn out from the outlet of the web guide plate and swells with air until it reaches the trumpet guide is greatly absorbed at the entrance of the trumpet guide. There was a problem in that a large amount of air in the sliver was forced out by compression, and this air flowed back from the trumpet guide, obstructing the smooth introduction of the sliver into the trumpet guide. In addition, the backflow of air from the trumpet guide becomes more intense as the spinning speed of the sliver increases, which applies a force in the backflow direction to the sliver introduced into the trumpet guide, causing the sliver to flow between the web guide plate and the trumpet guide. The problem is that the tension of the sliver becomes small, and as a result, the tension of the sliver drawn out from the web guide plate is not sufficiently transmitted to the web converging within the web guide plate, and the web stays in the web guide plate, eventually resulting in sliver breakage. The dot was hot. In order to reduce the backflow of air as mentioned above, it is possible to move the trumpet guide closer to the outlet of the web guide plate, but as is well known, a large space may be left in front of the feed roller for the web to emerge. Therefore, a space for moving the web guide plate is required between the web guide plate and the trumpet guide, and it is difficult to bring the trumpet guide close to the web guide plate.
Moreover, if the trumpet guide is placed close to the web guide plate, the backflow from the trumpet guide will have an adverse effect on the web being focused, which is undesirable.

Means for Solving the Problems Therefore, the present invention solves the problems of the conventional device described above, by providing a web convergence guide close to the downstream side of the delivery roller and a trumpet guide spaced apart behind the web convergence guide. Even if the trumpet guide is installed, the backflow of air at the entrance of the trumpet guide is suppressed, and even in the case of high-speed spinning, the tension by the calender roller acts on the sliver between the web focusing guide and the trumpet guide. A web focusing guide is placed close to the downstream side of the delivery roller, and between an outlet of the web focusing guide and a trumpet guide, an opening communicating with the outside air and the sliver drawn out from the outlet are focused. It is characterized in that a sliver guide having a guide surface for guiding the device is disposed.

Operation: The wide thin web fed out by the feeding roller is guided substantially perpendicularly by the web focusing guide and focused to the exit section at the substantially central portion, from which it is pulled out as a sliver. The drawn-out sliver is further focused and guided by the guide surface of the sliver guide, and the focused sliver is introduced into the trumpet guide. Therefore, the sliver drawn out from the outlet section is prevented from expanding by containing air, and the amount of air forced out at the inlet section of the trumpet guide is reduced. Furthermore, the air pushed out at the inlet of the sliver guide or trumpet guide is easily released into the atmosphere from the opening of the sliver guide, and the pushed air flow no longer acts on the sliver to a large extent.

Embodiment Hereinafter, the present invention will be explained in detail by way of an embodiment shown in the drawings. 1 indicates the carding machine dotshua, 2
3 and 4 are a pair of upper and lower delivery rollers disposed in front of the stripping roller 2, and 5 and 6 are trumpet guides 7 that are reversible toward the entrance side.
and a pair of upper and lower calender rollers arranged at a relatively long distance from the feed-out rollers 3 and 4 to enable the feed-out operation,
Among these rollers, stripping roller 2
is driven at a slightly faster speed than the stripping roller 1, and the delivery rollers 3 and 4 in front of it are driven at the same speed or a slightly faster speed than the stripping roller 2,
Furthermore, the calender rollers 5 and 6 in front of them are driven at a speed approximately 1.15 to 1.29 times faster than the delivery rollers 3 and 4. Reference numeral 9 denotes a web convergence guide located close to the downstream side of the delivery rollers 3 and 4, and includes a web holding surface 10 that immediately holds the wide thin web 8 sent out from the delivery rollers 3 and 4 from below; It consists of left and right focusing guide surfaces 11 and 12 that are inclined toward the center at an obtuse angle with respect to the feeding direction of the web, and four surfaces, upper and lower, left and right, of an upper surface 13 that faces the web holding surface 10,
Among the four surfaces 10, 11, 12, and 13, at least the left and right focusing guide surfaces 11 and 12 and the upper surface 13 are integrally formed so as to converge from the wide entrance section 14 toward the narrow rectangular exit section 14A. ing. Also,
As shown in the figure, the web holding surface 10 of the web focusing guide 9 has a truncated triangular shape with a low height so that the fed wide thin web 8 can be immediately held from below and focused immediately toward the center. Left and right focusing guide surfaces 11 and 12 are formed along the oblique sides of the truncated triangle and are inclined toward the center at obtuse angles of about 95 degrees to 100 degrees with respect to the feeding direction of the web 8, and the inclination The left and right focusing guide surfaces 11 and 12 are configured to deflect the extrusion force from the rear of the web toward the focusing direction, thereby focusing the wide thin web 8 toward the center. Furthermore, the entrance portion 14 of this web focusing guide 9
A is the web holding surface 10 and the top surface 13 as shown.
The edges of the web 8 are formed in such a size that they are located inside the horizontal lines a-a' and b-b' passing through the centers of the upper and lower feed rollers 3 and 4, and the winding and waving of the web 8 during high-speed operation are prevented. It is designed to prevent this phenomenon. Outlet section 1 of web focusing guide 9
As is clear from the drawing, 4A is located at a position offset downward from the common tangential direction of the feed rollers 3 and 4, and the web fed out from the feed rollers 3 and 4 near the exit portion 14A is held by the upper surface 13. It is designed to guide you downwards. Further, this web focusing guide 9 is configured to be able to separate from the feed rollers 3 and 4 in order to facilitate the web feeding operation.Hereinafter, the reversing mechanism 15 of this web focusing guide 9 will be explained. A pair of brackets 17A, 17B are provided facing each other at an appropriate distance in the machine width direction at the rear of the cross beam 16 on which the calendar rollers 5, 6 are installed.
A rotatable horizontal shaft 18 is pivotally supported by the brackets 17A and 17B arranged opposite to each other, and a pair of swinging arms 19A and 19B whose lower ends are fitted are fixed to the horizontal shaft 18 at an appropriate distance. and its opposite swing arm 1
Left and right mounting plates 20A and 20B fixed to the web focusing guide 9 are fastened to the upper parts of the web focusing guides 9A and 19B with bolts, respectively, and one of the swinging arms 19A
is pin connected to a piston rod 23 of an air cylinder 22 which is swingably supported below the cross beam 16 via a bracket 21, and with the piston rod 23 of the air cylinder 22 protruding, the swing arms 19A, 19B are attached to the bracket. 17A,
When the piston rod 23 is retracted, the swing arms 19A, 19B and the web focusing guide 9 are moved to the horizontal axis 1.
8 to the front calendar rollers 5 and 6, and is held at the opening work position shown by the imaginary line. Reference numeral 25 indicates a stopper on the reverse side, which is installed on the brackets 17A and 17B. Furthermore, the horizontal axis 18
A switch cam 26 and a limit switch 27 are attached to one end to confirm the restoration of the web focusing guide, and if the limit switch 27 is not activated, the carding machine will not switch from low speed to high speed even if the high speed changeover push button switch is pressed. It's summery. Also, the air cylinder 22 moves the piston rod 23 by the operation of a stop motion such as a sliver cut.
is retracted, and in response to a command to switch from low-speed operation to high-speed operation, the piston rod 23 protrudes and automatically reverses the web focusing guide 9. However, the reversing mechanism 15 of the web focusing guide 9 is not limited to this embodiment, and the air cylinder 2
Instead of 2, a handle or the like may be attached to allow manual reversal.

Furthermore, an opening 50 communicating with the outside air is provided between the web focusing guide 9 and the trumpet guide 7 disposed on the inlet side of the calendar rollers 5 and 6.
A sliver guide 28 having a U-shaped cross section (including a V-shaped cross section) is provided so as to be movable up and down via an air cylinder 29 and a guide rod 31. . The opening 50 consists of a gap 50a provided with the web focusing guide 9, a gap 50b provided with the trumpet guide 7, and a groove 50c formed on the upper side over the entire length of the sliver guide 28. The Mizoguchi 50c is the third
As shown in the figure, it is formed into a V-shape to easily receive the sliver. This sliver guide 28 also connects to the piston rod 30 of the air cylinder 29.
The piston rod 30 is held in the operating position shown by the solid line by the protrusion of the piston rod 30, and the standby position shown by the phantom line by the retraction of the piston rod 30. Furthermore, when the stop motion is activated due to a sliver breakage, etc., the piston rod 30 of the air cylinder 29 first retracts, lowering the sliver guide 28 from the operating position to the standby position, and then the piston rod 23 of the air cylinder 22 retracts. The web converging guide 9 is automatically reversed from the operating position to the unloading position. Further, when switching from low-speed operation to high-speed operation after starting, the operation is performed in the reverse order. This sliver guide 28 is
The inner width and position of the lower surface of the calender rollers 5 and 6 are set so that the tensile force of the calendar rollers 5 and 6 is propagated into the rear web focusing guide 9 by further focusing the sliver coming out of the web focusing guide 9.

In this embodiment configured as described above, when the sliver cutting stop motion (not shown) or the like is activated and the carding machine after the carding machine stops,
The stop command causes the piston rod 30 of the air cylinder 29 to retract, and the sliver guide 28, which was in the operating position shown by the solid line, descends to the standby position shown by the imaginary line. The piston rod 23 is retracted, and the web converging guide 9, which was in the operating position shown by the solid line, is automatically reversed to the feeding position shown by the imaginary line. In this state, when the carding machine after the cloth 1 is restarted and starts low-speed operation, the wide thin web 8 which has been peeled off from the cloth 1 by the stripping roller 2 is sent out from the delivery rollers 3 and 4. The tip of the web 8 sent out from the delivery rollers 3 and 4 is manually collected,
The sliver is passed through the web converging guide 9 and the trumpet guide 7, which have been reversed to the unwinding work position, and held between the front calender rollers 5 and 6, and the tip of the sliver sent out from the calender rollers 5 and 6 is supplied to a coiler head (not shown). and complete the meddling work. When this picking operation is completed, when the high/low speed changeover switch (not shown) is switched from the low speed side to the high speed side, the piston rod 23 of the air cylinder 22 protrudes in response to the switching command, and the web converging guide 9 is placed in the pulling operation position. automatically returns to the operating position. Next, the piston rod 30 of the air cylinder 29 protrudes to automatically return the sliver guide 28 from the standby position to the operating position, and guides the sliver between the web focusing guide 9 and the trumpet guide 7 into the guide groove 28a. In response to the return confirmation command for the sliver guide 28, the carding machine is automatically switched from low speed to high speed and continues to operate at high speed. As described above, in the carding machine that automatically returns the web converging guide 9 and the sliver guide 28 to the operating position after completion of the feeding and starts high-speed operation, the wide thin web fed out from the feeding rollers 3 and 4 at high speed is As soon as the web 8 enters the web focusing guide 9 provided in front of it, it is held from below by the web holding surface 10, and the left and right focusing guide surfaces are inclined toward the center at an obtuse angle with respect to the feeding direction. 1
1 and 12, the web 8 changes its direction toward the center, and is sequentially focused toward the center by the pushing force from the rear of the web 8 and the tensile force caused by the draft from the front, and is turned into a sliver from the rectangular outlet portion 14A. Formed and drawn out. In this case, the web fed out from near the center of the feeding rollers 3 and 4 is guided by the focusing guide surfaces 11 and 12 and the upper surface, deflected downward, and then guided by the web holding surface 10 and wound into a spiral shape. This rolled-up web is the exit part 1
You will be guided to 4A and pulled out. That is, when the web is collected and pulled out from the outlet 14A, the left and right edges of the bundled web are continuously rolled downward in the vicinity of the exit and are pulled out from the outlet 14A. . This winding of the web ensures that the tension of the sliver at the outlet 14A is transmitted to the web at a location far away from the outlet 14A in the web focusing guide 9, and at the same time the tension of the sliver in the outlet 14A is The degree of entanglement increases. As a result, even when the web spinning speed is increased, the web located far away from the outlet section 14A (positions near both ends of the feed rollers 3 and 4) can be reliably guided to the outlet section 14A, thereby preventing web breakage. can be prevented. The sliver pulled out from the web focusing guide 9 is further focused by the guide surface 51 while passing through the guide groove 28a of the sliver guide 28 in front of it.
The trumpet guide 7 remains in the focused state.
After being introduced into the coiler, it reaches the calender rollers 5 and 6, and is further focused through the calender rollers 5 and 6 and the trumpet guide 7, reaches the coiler, and is housed in the can. In this case, the sliver pulled out from the outlet of the web focusing guide 9 as described above is transferred to the guide surface 51 of the sliver guide 28.
Since the sliver is further focused by the sliver and the sliver in the focused state is introduced into the trumpet guide 7, the amount of air pushed out of the sliver by the trumpet guide 7 is reduced, and the amount of air pushed out against the sliver is reduced. The effect of backflow can be reduced. Further, the sliver is guided by the guide groove 28a of the sliver guide 28, and the air pushed out by the sliver guide 28 and the trumpet guide 7 is transferred to the gaps 50a, 50b and the groove opening 50c.
Since the sliver is immediately released into the atmosphere, the flow of the sliver can be prevented from being disturbed by the extruded air even when the sliver is spun at a high speed.

As described above, the web converging device of this embodiment includes the feed roller 3, the web converging guide 9,
A horizontal line a passing through the center of the upper and lower feed rollers 3 and 4 is provided with a web holding surface 10 that immediately holds the wide thin web 8 fed out from below from below, and the edges of the web holding surface 10 and the upper surface 10 Since it is located inside of -a' and b-b' and close to both rollers, even when short fibers such as cotton fibers are focused at a high speed of 100 meters per minute or more,
Since the web 8 does not exhibit a waving phenomenon or the both ear portions do not hang down, the web 8 is not disturbed and no web breakage occurs. Further, the web focusing guide 9 of this embodiment is provided with left and right focusing guide surfaces 11 and 12 at an obtuse angle to the feeding direction of the web 8 on the front surface in the feeding direction of the web 8. The extrusion force of the web 8 sent out from the web 8 is diverted in the direction of convergence, and the extrusion force is used to converge the wide thin web 8. Even webs can be neatly focused and formed into slivers at high speeds exceeding 100 meters per minute.

Further, the web converging device of this embodiment is provided with a sliver guide 28 on the exit side of the web converging guide 9 to further converge and guide the converged sliver, so that the tensile force by the calender rollers 5 and 6 is applied to the rear side. It propagates into the web focusing guide to further facilitate focusing of the web 8. Therefore, in the case of this embodiment in which the sliver guide 28 is provided, even a web of short fibers such as cotton fibers with a low degree of entanglement between fibers can be processed at a high speed of about 200 meters per minute. It can be focused in an orderly manner.

Further, in the above embodiment, the web focusing guide 9 is made separable from the delivery rollers 3 and 4, and
Since the sliver guide 28 can be moved up and down,
When the web focusing guide 9 is turned over to the feeding position, its outlet portion is held close to the inlet portion of the trumpet guide 7, and a wide space is created between the web focusing guide 9 and the feed rollers 3 and 4, so that feeding is possible. Work can be carried out safely and easily.
Also, the sliver guide is formed with a U-shaped cross section,
Since the top is open, the sliver being spun at low speed can be guided during operation, and the spinning state of the sliver can be easily inspected at first glance.

Effects of the Invention As described above, in the present invention, the web convergence guide is placed close to the downstream side of the feed roller, and the outside air is communicated between the outlet of the web convergence guide and the inlet of the trumpet guide. Since a sliver guide having an opening and a guide surface that focuses and guides the sliver drawn out from the opening is provided, the web sent out from the delivery roller is focused to the center by the web focusing guide and exits. The sliver can be drawn out as a sliver from the trumpet guide, and the sliver thus drawn out can be focused and guided by a sliver guide to introduce the focused sliver into the trumpet guide. The amount of air forced out from inside can be reduced. Further, the air pushed out of the sliver by the sliver guide or the trumpet guide can be immediately released into the atmosphere through the opening, and the sliver between the web focusing guide and the trumpet guide can be guided in a focused state. Therefore, the pulling back action of the sliver by the extruded air can be suppressed, and even when the sliver spinning speed is increased, the tension by the calender roller can be sufficiently transmitted to the sliver at the outlet of the web focusing guide. The tensile force propagates into the rear web focusing guide, making it easier to focus the web. Even with short fiber webs, such as cotton fibers, where the degree of entanglement between fibers is small, speeds of about 200 meters per minute can be achieved. It can be neatly focused and formed into high quality slivers at high speeds.

[Brief explanation of the drawing]

FIG. 1 is an intermediate sectional view showing an embodiment of the present invention;
Figure 2 is an α view of Figure 1, Figure 3 is an A- view of Figure 1.
It is an A sectional view. 3, 4...Feeding roller, 5, 6...Calendar roller, 7...Trumpet guide, 9
... web focusing guide, 28 ... sliver guide, 50 ... opening, 51 ... guide surface.

Claims (1)

[Claims] 1. A pair of upper and lower delivery rollers, a trumpet guide, and a calendar roller are disposed downstream of the carding machine, and a trumpet guide and a calendar roller are arranged in this order, and the web sent out from the delivery rollers is collected and sent to the trumpet guide. In the device for introducing and forming into sliver,
On the downstream side of the delivery roller, the web sent out from the delivery roller is guided in a direction substantially perpendicular to the direction in which the web is sent out, and is converged to an exit section at a substantially central portion and pulled out from the exit section. A web focusing guide is provided nearby, and an opening communicating with the outside air is provided between an outlet of the web focusing guide and an inlet of the trumpet guide, and a guide surface that focuses and guides the sliver drawn out from the outlet. 1. A web converging device for a carding machine, comprising a sliver guide having a sliver guide. 2. A sliver guide with a U-shaped cross section is provided, which has a gap between the web focusing guide and the trumpet guide, and has a guide groove that is open upward over the entire length. A web converging device for a carding machine according to claim 1. 3. A web gathering device for a carding machine according to claim 2, wherein the sliver guide is movable up and down, and the web gathering guide is capable of moving away from the delivery roller downstream.