JP2821114B1 - High-Gelen nonwoven fabric manufacturing equipment - Google Patents

Abstract

An object of the present invention is to provide a high-elastic nonwoven fabric with high tensile strength and high tensile strength in which fibers are well entangled in a single operation by a single operation. SOLUTION: The rotation is driven in the opposite direction at a lower peripheral speed than the vicinity of a doffer 7 and has teeth 21a having a large pitch in a direction opposite to the teeth 7a of the doffer 7, and the web 11 on the doffer 7 is rotated at a peripheral speed. The receiving roller 21 compresses and increases the thickness in the conveying direction and receives and conveys it. The receiving roller 21 which is pressed against each other and rotates in the opposite direction to the receiving roller 21 is close to the receiving roller 21 and has a streak 22a in the axial direction. Receives the high gelen web 11a which has been compressed and thickened in the conveying direction in which the high gelen nonwoven fabric 2
By the settle roller pairs 22 and 23 sent out as 4,
Achieve the above objectives.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a high gelen non-woven fabric using a carding machine.

[0002]

2. Description of the Related Art In a carding machine, a cotton lump is unraveled by a take-in roller using a unwinding action, and the combing action between the next cylinder and the top is used to improve the parallelism and uniformity of the fiber. The web is taken out as a sliver having a predetermined thickness by a calender roller.

[0003] In the first conventional example, a thin web fed from a doffer is overlapped when a non-woven fabric with high gelen is manufactured using a carding machine. This makes it possible to manufacture a nonwoven fabric of any high gelen depending on the number of webs to be overlapped.

However, since the web obtained by the carding machine has a high degree of parallelism of the fibers, the nonwoven fabric obtained by laminating the web to the required level has a high tensile strength in the longitudinal direction of the fibers, but is perpendicular to this. Directional tensile strength is low, which is problematic for some applications. In addition, when the webs having good parallelism of the fibers are overlapped with each other, the fibers are weakly entangled with each other. In addition, a large number of webs need to be overlapped to obtain a non-woven fabric having a high gelen, so that it is troublesome, and the apparatus becomes large-scale even when an automatic machine is used.

On the other hand, in a second conventional example disclosed in Japanese Patent Application Laid-Open No. 54-38930, a web sent from a doffer is thickened by a receiving roller having a peripheral speed lower than that of the doffer while increasing the thickness of the web. The problem of the first conventional example is solved by stacking the required number of sheets.

In the third prior art disclosed in Japanese Patent Publication No. 3-57213, a web is arranged in parallel with a doffer with a clearance therebetween, and the web is rotated in the reverse direction with the doffer. First and second peeling rollers that receive and wrap around a predetermined angle and sequentially send out, a pair of upper and lower pressure rollers that guide the sandwiched web therebetween, and a web that moves between the first and second peeling rollers is wound at a predetermined angle. A rotating guide roller, and the speed change mechanism can increase the peripheral speed ratio of the second peeling roller with respect to the first peeling roller so that drafting can be performed. (1) It is possible to increase the amount of gel while accumulating between the first and second peeling rollers and discharge the pressure between the pressure rollers, thereby solving the problem of the first conventional example. Kill.

[0007]

However, in the second conventional example, even if the thickness of the web is increased by the receiving roller, the fibers of the web to be increased remain with the outer peripheral side of the web kept open. Not entangled. For this reason, even if the web is made to have a high degree of gelling, the tensile strength is weak, and a satisfactory nonwoven fabric cannot be obtained.

In the third conventional example, since the accumulation of fibers is performed in a narrow and short triangular space between the first and second peeling rollers and the guide roller, it is necessary to draft the web. It is suitable, but there is a limit to accumulating web and increasing gelation. Moreover, even if the fibers are compressed in the transport direction due to the accumulation of the web, the fibers may not be able to move freely in a narrow space between the three rollers having teeth and may shrink in the length direction. small. For this reason, the web has a low degree of gelling and a low tensile strength. In addition, since a large number of rollers are arranged, the structure is complicated and the equipment cost is high.

An object of the present invention is to provide an apparatus for producing a high-grain nonwoven fabric which can obtain a nonwoven fabric with high tensile strength and high tensile strength in which fibers are well entangled in a single operation with a simple apparatus.

[0010]

In order to achieve the above object, an apparatus for manufacturing a high gelen nonwoven fabric according to the first aspect of the present invention is disposed close to a doffer, and has a lower peripheral speed than the doffer and is opposite to the doffer. The receiving roller is rotated and driven, and has teeth having a larger pitch than the doffer teeth in a direction opposite to the doffer teeth, and is pressed against each other with a receiving roller that receives and conveys the web being conveyed by the doffer, and rotates in reverse with the receiving roller. A settle roller pair, which has a streak in the axial direction as well as the receiving side, has a streak in the axial direction, receives the web being conveyed by the receiving roller, sandwiches the web, pressurizes it, and sends it out while tangling the fiber, Is what you do.

[0011] In such a configuration, a thin web with good parallelism in which the fibers sent to the doffer are aligned in the transport direction is formed by a receiving roller arranged close to the doffer at a peripheral speed lower than the doffer. The web that is being conveyed by the doffer is rotated in the reverse direction by the teeth that are rotated in the opposite direction and that are opposite to the doffer teeth and have a larger pitch than the doffer teeth. Due to the width of the interdental space due to the large tooth pitch while compressing and increasing the thickness without restraint from the other, while efficiently receiving a large amount of fiber and increasing the amount of gel without difficulty, the web in the transport direction of the web By giving the fiber longitudinal buckling by compression, it can be freely disturbed in the unconstrained low-density state and can be entangled with other fibers in various directions. The low-density web in which the fibers that have been made high-grain by the sheave roller are freely entangled is stripped off by one of the settle roller pairs, helping it to be caught by having streaks, and then nipped and transported by the settle roller pairs. Since the fiber is compressed and densified with the gripping by the streaks, the fiber changes from a low-density state to a high-density state due to this compression, and the entanglement of the fibers becomes rigid with no flexibility. Therefore, it is possible to manufacture a high-grain nonwoven fabric that is resistant to pulling in any direction. There is an advantage that a simple device can be used.

If both of the settle roller pairs have an axial streak as in the second aspect of the present invention, the fibers are further entangled when nipping and transporting a high gelen web in which the fibers from the receiving rollers are entangled. Since the combining action is further promoted, the tensile strength of the high gelen nonwoven fabric is further improved.

[0013] The streak roller pair is preferably a groove, and may be provided in a direction inclined with respect to the axis. Also, streaks can be provided so as to cross in a regular or oblique lattice shape.

According to the third aspect of the present invention, when the tip angle of the teeth of the receiving roller is set smaller than the tip angle of the teeth of the doffer, the receiving portion of the fiber formed between the teeth is received. Since the size becomes large, the receiving roller easily receives the web from the doffer and accumulates fibers when the web is made high in gelling, which is preferable since the gelling rate can be increased.

Even if the teeth of the receiving roller are set higher than the teeth of the doffer, the receiving space of the fiber formed between the teeth becomes large, so that the receiving roller has the doffer. It is easy to accumulate the fibers to receive the web from the company and increase the gelation, which is preferable because the gelation rate can be increased.

According to a fifth aspect of the present invention, between the teeth of the receiving roller, the back and front surfaces of the adjacent teeth have a relationship that they are substantially parallel or the root side is slightly narrower. When the base portion having a straight line connecting the base portions or a concave bottom portion near the base portion is formed, the base portion between the teeth is further increased even in combination with any of the inventions of claims 1 to 4, and the web is formed. It is effective with high gelation.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A representative embodiment of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, the carding machine used in the present embodiment includes a dish plate 2, a feed roller 3, a take-in roller 4, a control roller 5, a cylinder 6, And a doffer 7 and a substantially normal structure in which a top card 8 is provided on the cylinder 6. But,
It goes without saying that a carding machine of any structure may be used as long as the web 11 with good fiber parallelism is sent out from the doffer 7. Wrap cotton 12 fed by feed roller 3 from above dish plate 2
Since the operation of the carding machine for producing the web 11 from the above is well known, the description is omitted.

In this embodiment using such a carding machine, the receiving roller 21 is disposed close to the side of the doffer 7 opposite to the portion facing the cylinder 6, and the doffer 7 of the receiving roller 21 The pair of settle rollers 22 and 23 is arranged on the side opposite to the facing part of the set, and one of the settle rollers 22 is made to approach the receive roller 21.

The receiving roller 21 is driven to rotate in the opposite direction to the doffer 7 at a peripheral speed lower than that of the doffer 7, for example, about 1: 0.03 to 0.06, and as shown in FIG. The web 11 carried by the doffer 7 has teeth 21a as shown in FIG. 4 which are opposite in direction to the normal-sized teeth 7a and have a larger pitch than the teeth 7a of the doffer 7.
Is compressed in the transport direction by the difference in peripheral speed, and is received and transported while increasing the thickness as shown in FIGS.

The teeth 7a and 21a are formed on a metallic wire, and six teeth 7a shown in FIG. 3 are provided in 25.4 mm, and the teeth 21a shown in FIG. 4 are 4.5 in 25.4 mm. The teeth 21a have a larger pitch than the teeth 7a. There is no difference between the tooth heights.

The settle roller pairs 22 and 23 are pressed against each other, and the settle roller 22 on the side which rotates in the reverse direction to the receive roller 21 is brought close to the receive roller 21 and has a streak 22a in the axial direction. The web 11 which has been compressed and thickened in the transport direction is received, and the web 11 is sandwiched and pressurized and sent out as a high gelen nonwoven fabric 24 while tangling the fibers. The high gelen nonwoven fabric 24 sent out from the settle roller pairs 22 and 23 is guided or transported to a predetermined position by an appropriate guide such as a guide plate 25 or an appropriate transport means such as a belt conveyor.

As a result, the thin web 11 with good parallelism, in which the fibers sent out to the doffer 7 are aligned in the transport direction, is formed by the receiving roller 21 disposed close to the doffer 7 at a lower peripheral speed than the doffer 7. The teeth 21a that are driven to rotate in the opposite direction to the doffer 7 and that are opposite in direction to the teeth of the doffer 7 and have a larger pitch than the teeth of the doffer 7
The pitch of the teeth 21a is large while the web 11 being conveyed by the doffer 7 is compressed in the conveying direction in a state where the outer peripheral side is open due to the peripheral speed difference as shown in FIG. 21b between teeth 21a due to
With the size of the fiber, the large amount of fibers can be efficiently received and the amount of gel can be easily increased, and the fibers can be buckled in the length direction by the compression of the web 11 in the transport direction, so that the fibers can be freely released in the unrestrained low-density state. Can be entangled with other fibers in various directions.

A low-density web 11a which is made to be highly gelled by the receiving roller 21 and in which fibers are freely entangled.
Is stripped off by one of the settle roller pairs 22 and 23 with the help of the streaks 22a, and then is pressed while being nipped and conveyed by the settle roller pairs 22 and 23 and involves gripping by the streaks 22a. As the fibers are compressed and densified, the fibers change from a low-density state to a high-density state due to this compression, and the entanglement of the fibers becomes rigid with no degree of freedom. It is possible to manufacture non-woven noodles, and it is easy to work because it is easy to work because the number of sheets is small and it is easy to work, even if it is superimposed to obtain a higher non-woven noodles. is there.

The bulk of the high gelen nonwoven fabric 24 becomes about 30 times smaller than the bulk of the high gelen web 11a due to the pressurization by the settle roller pairs 22 and 23. But,
This bulk is preferably set to suit the application.

There is an advantage that the number of sheets is small, the work is easy, the work is easy, and the operation is easy with an automatic machine. .

In this embodiment, the tip angle of the teeth 21a of the receiving roller 21 is set smaller than the tip angle of the teeth 7a of the doffer 7. Thus, tooth 2
21b where fiber formed during 1a is received
However, since the size of the teeth becomes larger in the arrangement direction of the teeth 21a, the receiving roller 21 receives the web 11 from the doffer 7 and forms the high gelen web 11a. In particular, the shape between the roots of the teeth 21a is formed as a wider bore than that of the teeth 7a.
The foot 21b is made even larger, contributing to higher gelation. The undercut shape for that purpose can be set variously. One of the side surfaces of the teeth 7a, 21a is inclined as shown in FIGS. 3 and 4 so that it is easy to penetrate into the fiber and easily come off. However, the present invention is not limited to this. It can be inclined, and may not be inclined depending on the thickness.

The teeth 21a of the receiving roller 21 are
Even if it is set higher than the tooth 7a of the doffer 7, the receiving portion 21b of the fiber formed between the teeth 21a is
Since it becomes larger in the height direction of “a”, the receiving roller 21 receives the web 11 from the doffer 7 and easily accumulates fibers when the web 11 is made to be highly gelled, so that a high gelation rate can be increased.

In particular, as shown in FIG. 4, between the teeth 21a of the receiving roller 21, the back surface 21c and the front surface 21d of the adjacent teeth 21a, 21a are substantially parallel to each other. The back surface 21c has a narrowing relationship.
When the base 21b having a concave bottom 21e or a straight line connecting the roots of the web 11 and the front surface 21d is formed, the base 21b between the teeth 21a is further enlarged, and the web 11 has a high gelation. Is more effective.

Both the settle roller pairs 22 and 23 may have an axial streak, and in such a configuration, the high gelen web 1 in which the fibers from the receive roller 21 are intertwined.
Since the action of further entanglement of the fibers when nipping and transporting 1a is further promoted, the high gelen nonwoven fabric 24
The tensile strength is further improved.

The settle roller pairs 22 and 23 have a streak
A groove is preferable, and the groove may be provided in a direction inclined with respect to the axis. Also, streaks can be provided so as to cross in a regular or oblique lattice shape.

In this embodiment, as shown in FIG. 2, a receiving roller 21 and a settle roller pair 22, 2,
Numeral 3 is provided by being supported by brackets 32 attached to the left and right side frames 1 with bolts 31. The bracket 32 directly supports and supports the receiving roller 21, and the settle roller pairs 22 and 23 are supported by an auxiliary bracket 34 supported on the bracket 32 by a bolt 33 so as to be able to adjust its position in a direction of separating from and coming into contact with the receiving roller 21. The gauge of the receiving roller 21 and the settling roller 22 can be adjusted.

The auxiliary bracket 34 directly supports and supports the settle roller 22.
5 and is supported by a lever 36 that rotates about the center 5, and the settle roller 23 is biased by a spring 37 to settle the settle roller 23.
2 so that the high gelen web 11a can be pressurized to a predetermined height. The biasing force of the spring 37 can be adjusted by a bolt 38. Further, the position of the settle roller 23 closest to the settle roller 22 can be adjusted by a stopper bolt 39, and is usually from 4 / 1000in to 10 / 1000in.
In is set to about in. As a result, it is possible to prevent the settle roller pairs 22 and 23 from being pressed against each other and damaged during the idle operation.

[0034]

According to the first aspect of the present invention, a thin web with good parallelism, in which the fibers sent out to the doffer are aligned in the transport direction, is received by the receiving roller disposed close to the doffer, and is lower than the doffer. The web that is being conveyed by the doffer is compressed in the conveyance direction by the teeth that are rotated in the opposite direction to the doffer at the peripheral speed and that are opposite to the doffer teeth and have a larger pitch than the doffer teeth. While the thickness of the teeth increases, the pitch of the teeth is large, so that the fibers can be efficiently and reliably received and have a high gelation, and the fibers are buckled in the longitudinal direction by compressing the web in the conveying direction to disturb the fibers in various directions. The web in which the fibers which have been subjected to the high gelling by the receiving roller are entangled with each other, and the web which is entangled by one of the settle roller pair has a streak. After being peeled off with the help of the spar, the squeezed fiber is compressed while being gripped and conveyed by the settle roller pair, and is compressed with the gripping by the streaks. Nonwoven fabric can be manufactured, and it is easy to work because it is not necessary to have a small number of sheets and it is easy to work because it is not necessary to obtain even higher nonwoven fabric by stacking. .

According to the second aspect of the present invention, the action of further entanglement of the fibers when the web from the receiving roller is entangled and conveyed when the high-grain web in which the fibers are entangled is pinched and conveyed is further promoted. Strength is further improved.

The streak of the settle roller pair is preferably a groove, and may be provided in a direction inclined with respect to the axis. Also, streaks can be provided so as to cross in a regular or oblique lattice shape.

According to the third and fourth aspects of the present invention, the receiving space of the fiber formed between the teeth is increased, so that the receiving roller accumulates the fiber for receiving the web from the doffer and increasing the gelation. It is preferable because it is easy to increase the gelation rate.

According to the invention of claim 5, claims 1 to 4 are provided.
Combination with any one of the inventions described above makes the gap between the teeth even larger, and is more effective for increasing the gel content of the web.

[Brief description of the drawings]

FIG. 1 is a side view showing an apparatus for manufacturing a high gelen nonwoven fabric according to a representative embodiment of the present invention.

FIG. 2 is a side view of a main part of the apparatus of FIG.

3 is a side view and a sectional view showing the teeth of a doffer of the device of FIG. 1;

FIG. 4 is a side view and a sectional view showing teeth of a receiving roller of the apparatus of FIG. 1;

FIG. 5 is a plan view showing a state in which the high-grain nonwoven fabric is manufactured by the apparatus of FIG. 1;

[Explanation of symbols]

 Reference Signs List 7 Doffer 11 Web 11a High gelen web 21 Receive roller 21a Teeth 21b Top 21c Back 21d Front 21e Bottom 22,22 Settle roller pair 22a Streak 37 Spring

Claims (5)

(57) [Claims] Claims: 1. A tooth is disposed close to a doffer, is driven to rotate in a direction opposite to the doffer at a lower peripheral speed than the doffer, and has a tooth opposite to the doffer teeth and having a larger pitch than the doffer teeth; The receiving roller that receives and transports the web being transported by the doffer is pressed against each other, and the side that rotates in the reverse direction to the receiving roller is close to the receiving roller and has a streak in the axial direction, and receives the web that is being transported by the receiving roller. A pair of settle rollers for sandwiching and pressurizing and sending the fibers while tangling the fibers, and a high gelen nonwoven fabric manufacturing apparatus. 2. The apparatus for producing a non-woven fabric according to claim 1, wherein both of the pair of settle rollers have a streak in the axial direction. 3. The apparatus for manufacturing a non-woven fabric having high gelen content according to claim 1, wherein the tip angle of the teeth of the receiving roller is set smaller than the tip angle of the teeth of the doffer. 4. The apparatus for producing a non-woven fabric having high gelen content according to claim 1, wherein the teeth of the receiving roller are set higher than the teeth of the doffer. 5. A relationship between the teeth of the receiving roller such that the back and front surfaces of adjacent teeth are substantially parallel or the root side is slightly narrower, and a straight line or a straight line connecting between the roots of the back and front surfaces. 5. The apparatus for manufacturing a high-gellen nonwoven fabric according to claim 1, wherein the contact portion has a concave bottom portion close to the bottom portion. 6.