JPS6115172B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a web convergence device for a carding machine that converges a wide thin web stripped from a carding machine cloth into a sliver.

Conventionally, in a carding machine, a wide, thin web that has been peeled off from a cloth using a stripping roller or the like is then fed to a pair of upper and lower delivery rollers, and the wide, thin web that has been delivered from the delivery rollers is passed to the downstream side. The sliver is formed by passing it through a trumpet guide for focusing and a calendar roller installed on the side, but this delivery roller and the calendar roller downstream of it are relatively long for the purpose of feeding the web and observing the web. They are arranged at intervals, and the wide, thin web fed out from the feeding roller is conveyed over a relatively long section with only a slight frictional force due to the entanglement between the fibers, and is bundled. 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 woven fibers, which have short fiber lengths and a low degree of entanglement between fibers. could not be focused and formed into a sliver.

Further, 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, and a wide thin web fed out from the feed roller is placed in front of the web guide plate. Japanese Patent Application Publication No. 2006-100101 discloses a device that collides with the concave guide surface of a guide plate to change its direction at right angles, and pulls and focuses the redirected web toward the exit side along the inner part of the concave guide surface of the web guide plate. This was proposed in Publication No. 139830/1983. However, this web converging device is configured such that a web guide plate provided in front of the feed roller is perpendicular to the web fed out from the feed roller, and there is a gap between the web guide plate and the feed roller. A considerable amount of space has been created. For this reason,
When the speed of the web fed out from the feed roller reaches a high speed of over 100 meters per minute, the fed web is strongly pressed against the concave guide surface of the web guide plate in front of it, causing the concave shape of the web and the web guide plate. Frictional resistance between the guide surfaces increases. As a result, the fed out wide web cannot be pulled out from the outlet of the web guide plate by overcoming the frictional resistance only by the frictional force between the fibers, and the fed out web is pulled out from the outlet of the web guide plate by the feeding roller. The sliver stagnates in the intervening space, causing sliver breakage between the outlet of the web guide plate and the downstream calender roller. Similar to the prior art described above, this phenomenon occurred when a web of short fibers with a low degree of bonding between fibers was focused at a high speed of 100 meters per minute or more.

In this way, in a carding machine, the web sent out from the delivery roller is wider and thinner than in a spinning machine such as a drawing machine, so
In the case of short fibers such as cotton fibers, which have a low degree of entanglement between fibers, it is extremely difficult to condense a wide, thin web over a long distance while running at high speed with only a small amount of frictional force due to the entanglement between fibers. It is difficult, and if a web of short fibers with a low degree of entanglement between fibers is converged immediately after being sent out from the feed roller, the convergence thickens the web and increases the frictional force between the fibers, causing the web to However, in the conventional apparatus in which the web guide plate serving as the focusing means is perpendicular to the web being fed out, as mentioned above, the web feeding speed exceeds 100 meters per minute. Experiments have shown that at high speeds, the frictional resistance between the web and the web guide plate becomes greater than the frictional force between the fibers, making it impossible to pull a wide, thin web from the outlet of the web guide plate.

In view of the current state of carding machines, the present invention provides an apparatus for forming a sliver by converging the web sent out from a pair of upper and lower delivery rollers disposed downstream of the carding machine, in which the web is collected downstream of the delivery rollers. A web focusing guide is installed near the side, and the web focusing guide includes a web holding surface that immediately holds the web sent out from the feeding roller from below, and left and right sides that are inclined toward the center at an obtuse angle with respect to the feeding direction of the web. 4 above, below, left, and right of the focusing guide surface and the upper surface facing the web holding surface.
These four surfaces form a wide inlet portion extending approximately the entire length of the feed roller on the upstream side and a narrow outlet portion on the downstream side, and at least the left and right focusing guide surfaces and the upper surface of the four surfaces The web converges continuously from the inlet part to the outlet part, and the edges of the upper surface and the web holding surface on the inlet part side are close to the roller circumferential surface near the center height of the upper and lower delivery rollers, respectively. The exit section is located at a position offset downward from the common tangential direction of the upper and lower delivery rollers, and the web sent out from the delivery roller is guided by the upper surface, the focusing guide surface, and the web holding surface near the exit section. The present invention is characterized in that the sliver is focused by winding it into the web so that the tension of the sliver is well transmitted to the web at a position far from the exit part in the web focusing guide.
A sliver guide with a U-shaped cross section is provided on the exit side of the web focusing guide to further collect and guide the focused sliver, so that the tension of the sliver by the calendar roller is well transmitted to the rolled-up sliver at the exit part. The feature is that the air contained in the sliver is released upwards, and even with short fibers such as cotton fibers with a low degree of entanglement, a wide thin web can be produced every minute.
It is an object of the present invention to provide a web convergence device for a carding machine that is capable of converging the web in an orderly manner at a high speed of 100 meters or more to form a high quality sliver.

Hereinafter, the present invention will be explained in detail with reference to 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 disposed near the downstream side of the delivery rollers 3 and 4, which 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; Consisting of left and right focusing guide surfaces 11 and 12 that are inclined toward the center at an obtuse angle with respect to the web feeding direction, and four surfaces on the upper, lower, left and right sides of the upper surface 13 that faces the web holding surface 10,
These four surfaces 10, 11, 12, and 13 form a wide inlet portion extending approximately the entire length of the delivery roller on the upstream side, and a narrow outlet portion on the downstream side, respectively.
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 continuously converged and integrated from the wide entrance section 14 toward the rectangular narrow exit section 14A. It is formed as follows. Further, as shown in the figure, the web holding surface 10 of the web focusing guide 9 immediately holds the fed wide thin web 8 from below, and
It is formed into a truncated triangular shape with a low height so that it can be focused immediately toward the center, and rises along the oblique side of the truncated triangle to the center side at an obtuse angle of about 95 degrees to 100 degrees with respect to the feeding direction of the web 8. Left and right focusing guide surfaces 11 and 12 are formed which are inclined to the left and right, and the pushing force from the rear of the web is diverted to the focusing direction by the inclined left and right focusing guide surfaces 11 and 12,
It is formed so that the wide thin web 8 is focused toward the center. Further, the entrance portion 14A of the web focusing guide 9 is connected to the web holding surface 10 as shown in the figure.
and the upper and lower edges of the upper surface 13 are the feed rollers 3,
It is formed so as to be close to the roller circumferential surface near the center height of the feed rollers 3 and 4, preferably inside the horizontal lines a-a' and b-b' passing through the centers of the delivery rollers 3 and 4, and to facilitate high-speed operation. The web 8 is formed so as to prevent the web 8 from rolling up and undulating. Also, this web focusing guide 9
is configured to be able to separate from the feed rollers 3 and 4 in order to facilitate the work of feeding the web.
5 will be explained. At the rear of the cross beam 16 where the calendar rollers 5 and 6 described above are installed,
A pair of brackets 17A, 17B are provided facing each other at an appropriate distance in the machine width direction, and a rotatable horizontal shaft 18 is supported by the facing brackets 17A, 17B. A pair of swinging arms 19A, 19B fitted with parts are fixed at an appropriate distance, and left and right mounting plates 20A fixed to the web focusing guide 9 are mounted on the upper parts of the swinging arms 19A, 19B. , 20B are respectively fastened by bolts,
In addition, one swinging arm 19A is connected to the cross beam 16.
The piston rod 23 of the air cylinder 22 is pivotally supported via a brat 21 below, and the piston rod 23 of the air cylinder 22 is protruded from the rocking arms 19A, 19.
When the piston rod 23 is retracted, the swing arms 19A, 19B and the web focusing guide 9 are moved horizontally when the piston rod 23 is retracted. It is automatically reversed around the shaft 18 toward 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. A switch cam 26 and a limit switch 27 are attached to one end of the horizontal shaft 18 to confirm the restoration of the web focusing guide.If the limit switch 27 does not operate, the carding machine will not change from low speed to high speed even if the high speed changeover push button switch is pressed. It is designed not to switch. In addition, the piston rod 23 of the air cylinder 22 is retracted by the operation of a stop motion such as a sliver breakage, and the piston rod 23 is retracted by the switching command from low speed operation to high speed operation.
3 protrudes to automatically reverse the web focusing guide 9. However, the reversing mechanism 15 of the web convergence guide 9 is not limited to this embodiment, and a handle or the like may be attached instead of the air cylinder 22 to manually reverse the web converging guide 9.

Further, between the web converging guide 9 and the trumpet guide 7 disposed on the inlet side of the calender rollers 5 and 6, there is a U-shaped cross section (including a V-shaped cross section) for further converging and guiding the converged sliver. The sliver guide 28 of the air cylinder 2
9 and a guide rod 31 so as to be movable up and down. This sliver guide 28 is also in the operating position shown by the solid line due to the protrusion of the piston rod 30 of the air cylinder 29, and the piston rod 30 is
By the immersion of 0, each is held at the standby position shown by the imaginary line. Furthermore, due to the operation of the stop motion such as when the sliver breaks, the piston rod 30 of the air cylinder 29 first retracts into the sliver guide 2.
After lowering 8 from the operating position to the standby position,
Piston rod 23 of the air cylinder 22
is retracted to automatically reverse the web focusing guide 9 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. The sliver guide 28 has an inner width and a lower surface 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 from the web focusing guide 9. The position of is set.

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 are 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 that was in the standby position to the operating position, and in response to a command to confirm the return of the sliver guide 28, the carding machine automatically switches 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 8 is a web focusing guide 9 placed close to the front thereof.
Immediately after entering the web, it is held from below by the web holding surface 10, and left and right focusing guide surfaces 11 are inclined towards the center at an obtuse angle with respect to the feeding direction.
and 12 and change direction toward the center, and are sequentially focused toward the center by the pushing force from the rear of the web 8 and the tensile force due to the draft from the front,
It is formed into a sliver and drawn out from the rectangular outlet portion 14A. 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 guided to an outlet portion 14A that is offset downward from the common tangential direction of the delivery rollers 3 and 4 and is 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 drawn out from this web focusing guide 9 is further focused while passing through the sliver guide 28 in front of it, passes through the trumpet guide 7 in front of it, reaches the calender rollers 5 and 6, and is then further focused on the calender roller 5. , 6 and the trumpet guide 7, it is further focused to the coiler and housed in the can.

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 9, making focusing of the web 8 even easier. 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.

In the above embodiment, a sliver guide 28 is provided on the exit side of the web focusing guide 9 for further focusing and guiding the focused sliver.
It has been confirmed through experiments that even with this web converging device that does not use the sliver guide 28, the web can be converged into slivers in an orderly manner at a high speed of about 130 meters per minute in the case of cotton fibers.

As described above, in the present invention, the web focusing guide is provided close to the downstream side of the feed roller, and the web focusing guide is placed above, below, and to the left of the web holding surface, the left and right focusing guide surfaces, and the top surface. , and these four surfaces form a wide inlet portion extending approximately the entire length of the feed roller on the upstream side and a narrow outlet portion on the downstream side. , the right focusing guide surface and the upper surface converge continuously from the inlet to the outlet, and the edges of the upper surface and the web holding surface on the inlet side are near the center height of the upper and lower feed rollers, respectively. Since the exit part is located close to the roller circumferential surface at a position offset downward from the common tangential direction of the upper and lower delivery rollers, the wide thin web sent out from the delivery roller is placed on the web holding surface. The web can be immediately held from below by the web and guided to the center by the left and right focusing guide surfaces, and the web sent out from the delivery roller near the exit can be focused toward the exit. The web is guided downward by the upper surface, and the web is rolled up while being guided by the web holding surface, and can be pulled out from the outlet section in this rolled up state. As a result, the tension of the sliver drawn out from the outlet can be transmitted to the web located far away from the outlet by using the winding part of the web, and as a result, the web fed out from the feed roller can be The pushing force from the rear and the tensile force of the sliver from the front can reliably guide the sliver to the outlet, preventing the occurrence of web breakage, web winding, etc., and preventing web waving and sagging of both ends. Even if the web is a short fiber web with a low degree of entanglement, such as cotton fibers, the web can be collected in an orderly manner at a high speed of 100 meters per minute or more to form a high-quality sliver.

Furthermore, the present invention provides a sliver guide with a U-shaped cross section that further focuses and guides the focused sliver on the exit side of the web focusing guide, so that the tensile force of the calendar roller is transferred to the rear web focusing guide. As a result, even short fiber webs such as cotton fibers with a low degree of entanglement between fibers can be neatly focused at a high speed of about 200 meters per minute to produce high-quality slivers. can be formed into

Further, in the present invention, the web convergence guide can be separated from the feed roller, and the sliver guide can be moved up and down, so that when the web convergence guide is reversed to the unloading work position, its exit portion is aligned with the entrance of the trumpet guide. held close to the
A wide space is created between the web convergence guide and the delivery roller, so the unwinding operation can be carried out safely and easily. Further, since the sliver guide is formed in a U-shaped cross section and the upper part thereof is open, it is easy to inspect the spinning state of the sliver at first glance.

[Brief explanation of the drawing]

FIG. 1 is an intermediate sectional view showing one embodiment of the present invention, FIG. 2 is an α view of FIG. 1, and FIG. 3 is an AA sectional view of FIG. 1. 1... dotshua, 2... stripping roller, 3, 4
...Feeding roller, 5, 6... Calendar roller, 7... Trumpet guide, 9... Web focusing guide, 10... Web holding surface, 11, 12... Focusing guide surface, 13... Upper surface, 28... Sliver guide.

Claims (1)

[Scope of Claims] 1. A device that collects and forms a web sent out from a pair of upper and lower delivery rollers disposed downstream of a carding machine into a sliver, wherein a web convergence guide is provided close to the downstream side of the delivery roller. death,
The web focusing guide includes a web holding surface that immediately holds the web fed out from the feeding roller from below, and left and right focusing guide surfaces each inclined toward the center at an obtuse angle with respect to the feeding direction of the web.
above and below the upper surface facing the web holding surface;
It consists of four faces, left and right, and these four faces form a wide inlet part extending approximately the entire length of the feed roller on the upstream side and a narrow outlet part on the downstream side, respectively.
At least the left and right focusing guide surfaces and the upper surface converge continuously from the inlet to the outlet, and the edges of the upper surface and the web holding surface on the inlet side are at the center of the upper and lower feed rollers, respectively. A web gathering device for a carding machine, characterized in that the exit portion is located in a position that is close to the circumferential surface of the roller near the height and is offset downward from a common tangential direction of the upper and lower delivery rollers. 2. A device for converging the web sent out from a pair of upper and lower delivery rollers arranged downstream of a carding machine to form a sliver, in which a web convergence guide is provided close to the downstream side of the delivery roller,
The web focusing guide includes a web holding surface that immediately holds the web fed out from the feeding roller from below, and left and right focusing guide surfaces each inclined toward the center at an obtuse angle with respect to the feeding direction of the web.
above and below the upper surface facing the web holding surface;
It consists of four faces, left and right, and these four faces form a wide inlet part extending approximately the entire length of the feed roller on the upstream side and a narrow outlet part on the downstream side, respectively.
At least the left and right focusing guide surfaces and the upper surface converge continuously from the inlet to the outlet, and the edges of the upper surface and the web holding surface on the inlet side are at the center of the upper and lower feed rollers, respectively. close to the roller circumferential surface near the height, the exit portion is located at a position offset downward from the common tangential direction of the upper and lower delivery rollers, and further on the exit portion side of the web focusing guide;
A web collecting device for a carding machine, characterized in that a sliver guide with a U-shaped cross section is provided to further collect and guide the collected sliver. 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 separable from the delivery roller.