JP2525519B2 - Carding equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carding apparatus for carding a fiber material to produce a nonwoven fabric, a web or the like.

[0002]

2. Description of the Related Art As a conventional carding device, for example, there is one shown in FIG. When the fiber material is supplied to the feed roller 101 from the fiber material supply device or the like, it is further supplied from the feed roller 101 to the takein 102.
At this time, the fiber material is stretched while being unraveled by the take-in 102. This fiber material is Takein 10
2 is sent to the cylinder 103, and the cylinder 103
Is further stretched by. Also, the cylinder 103
The fiber material sent to the worker is subjected to carding action by the worker 104, and a part thereof is wrapped around the worker 104.
This fiber material is peeled off by the stripper 105 and returned to the cylinder 103 again. The fibrous material is once formed into a web form from the cylinder 103 by the doffer 106 and sent to the next step.

As described above, the fiber band is formed by the takein 102,
Cylinder 103, worker 104, stripper 105
After that, the doffer 106 forms a web shape, and these carding elements are collectively referred to as a mountain card 107. Next to the single-mountain card 107, a second-mountain card 108 having substantially the same shape is continuously arranged. That is,
The second card 108 is a transporter 109 corresponding to the takein 102, a cylinder 110, and a worker 11.
1, a stripper 112 and a doffer 113, each carding element having the same function as described above. A card having two cards 107 and 108 is called a tandem type carding device.

By the way, there is a scribler type carding device for directly feeding the fiber material from the cylinder 103 of the first mountain card 107 to the transporter 109 of the second mountain card 108 without passing through the doffer 106. This scribbling carding device is used for the cylinder 10 of the first pile card 107.
The unevenness of the density of the fibrous material and the unevenness of the mixture in 3 are transferred to the cylinder 110 of the second mountain card 108 as they are, and the web spun from the peeling step 114 via the second mountain card 108 is made of the fibrous material. Non-uniformity and unevenness of mixing still remain. However, the doffer 106 is used to feed the tandem type carding device from the first card 107 to the second card 108.
Since the fibrous material is once formed into a web by, the fibrous material is carded at this time, and from the peeling step 114, a web having a uniform fibrous material density and being well mixed is spun.

[0005]

However, in such a conventional tandem type carding device, in order to feed the fiber material from the first pile card 107 to the second pile card 108, Doffer 106 on the first mountain card 107
Once formed into a web by the second card 1
Since it is being sent to 08, the transfer rate of the fiber material from the first pile card 107 to the second pile card 108 is as low as 30%, and as a result, it takes time to spin the web. However, there is a problem that the efficiency of web formation is low.

By the way, in the scribbler type carding device, since the first card and the second card are directly fed from the cylinder to the transporter, the transfer rate is 100.
%, The efficiency is high.

It is an object of the present invention to provide a carding apparatus in which the transfer rate of the fiber material from the first pile card to the second pile card is increased to improve the efficiency of web formation.

[0008]

In order to achieve such an object, according to the present invention, a take-in or a transporter that stretches while feeding the supplied fiber material,
A cylinder for further stretching the fiber material fed from this take-in or transporter, a worker for carding the fiber material being stretched in cooperation with this cylinder, and a cylinder for stretching and carding the fiber material. In a carding device for arranging a plurality of cards having a doffer for feeding from the next step to the next step, and conveying the fiber material to the transporter of the next card by the doffer of the one card, one card Doffers are arranged on both sides of a line connecting the center of the cylinder and the center of the transporter of the next card, so that the doffers are in contact with the cylinder and the transporter.
A fiber material guide member having a substantially rectangular cross section is arranged in a space formed by a transporter and a cylinder, and a corner of the fiber material guide member is formed to project at an acute angle toward a nip point between a pair of doffers and a transporter. The rotation speed of the transporter is higher than the rotation speed of the pair of doffers.

[0009]

The fiber material fed from one card to the next card moves from a plurality of doffers to the next transporter, so that the transfer rate becomes high. Therefore, the web spun from the peeling process is formed faster than the conventional one.

Next, the fibrous material is transferred from the doffer to the transporter through the projecting portion of the fibrous material guide member at an acute angle, so that the fibrous material is blown off by the air flow of the transporter rotating at high speed. Therefore, the fiber material is oriented not only in the longitudinal and lateral directions but also in the thickness direction, and three-dimensional pseudo-randomness is imparted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 are views showing an embodiment of a carding apparatus according to the present invention.

When the fiber material F is fed from the fiber material feeding device to the feed roller 1, it is fed from the feed roller 1 to the adjacent taker-in 44. The feeding speed of the feed roller 1 is 1 to 2 m / min, while the feeding speed of the taker 44 is 150 to 250 m / min. Therefore, the fiber material F is stretched while being unraveled. Next, the unraveled fibrous material is fed from the take-in 44 to the adjacent cylinder 46. Since the conveying speed of the cylinder 46 is 250 to 1000 m / min, the fibrous material F is further stretched.

A worker 45 is arranged adjacent to the cylinder 46, and the fiber material F held in the cylinder 46 by the worker 45 having a conveying speed of 10 m / min.
Is carded. From the cylinder 46, the fiber material F is fed to two adjacent doffers 47 and 48. Since the transport speed of the doffers 47 and 48 is 10 to 20 m / min, it is extremely slow with respect to the cylinder 46, and the fibrous material F is once formed into a web shape while being carded and fed to the next step. That is, the fiber material F fed to the take-in 44 is once formed into the web-shaped fiber material F by the doffers 47 and 48. In addition, these take-in 4
4, cylinder 46, worker 45, doffer 47, 4
The carding elements of 8 constitute a pile of cards 41 as a whole.

A second mountain card 42 is continuously arranged on the first mountain card 41. That is, the card 42 of the second mountain is adjacent to the doffers 47 and 48, the transporter 49 corresponding to the taker 44, and the cylinder 5
It has one worker 50 and two doffers 52 and 53, and these carding elements have substantially the same function as the carding elements of the card 41 but have a transport speed one rank higher.

Here, as shown in FIG. 2, the fiber material F held in the cylinder 46 is fed to the transporter 49 by the two doffers 47 and 48.
A space S ₁ surrounded by the doffers 47, 48, the cylinder 46 and the transporter 49 is created. Since the cylinder 46 and the transporter 49 rotate at a relatively high speed, a turbulent air flow is generated in the space S ₁ ,
Due to this turbulence, the cylinder 46, the doffers 47, 4
8. The fibrous material F held by the transporter 49 or the like may be peeled off and eventually may not be conveyed. Therefore, a fiber material guide member 59, which is formed by bending a plate into a quadrangular prism and has an arc-shaped side surface portion, is provided in the space S ₁ . Due to the fiber material guide member 59, the air flow in the space S ₁ is generated by the cylinder 46, the doffer 47,
The fibrous material F is smoothly guided in the feeding direction without being peeled off by being rectified in the respective rotating directions of the 48 and the transporter 49.

Further, the fiber material guide member 59 has projecting portions 59a, 59b, 59c, 59 having four corners formed to project at acute angles.
d, and these protrusions 59a, 59b, 59c, 59d
Are directed to the mutual nipple points N ₁ , N ₂ , N ₃ , N ₄ of the doffers 47, 48, the cylinder 46, and the transporter 49. Here, the web-shaped fibrous material F held by the doffer 47 is conveyed while being guided by the fibrous material guide member 59, and is transferred to the transporter 49 via the projecting portion 59a. Since the transporter 49 is rotating at high speed, a high-speed airflow is generated, and the fiber material F
Will be blown away by the airflow when it is suddenly largely turned by the acute-angled protrusion 59a. When the fibrous material F is blown away and thus transferred, the fibrous material F is oriented not only in the longitudinal and lateral directions but also in the thickness direction, and three-dimensional pseudo-randomness is imparted.

A fiber material guide member 61 formed by bending a plate material into a dogleg is also provided on the fiber material F transport side of the doffer 48 and the transporter 49. The fiber material guide member 61 also rectifies the air flow generated by the rotation of the doffer 48 and the transporter 49, and smoothly guides the fiber material F in the feeding direction.

The fiber material guide member 61 also has a protrusion 61a which is formed to project at an acute angle and is located near the nipple point N ₂ . Therefore, the fiber material F that moves from the doffer 48 to the transporter 49 is similarly given three-dimensional pseudo-randomness.

By the way, from the doffers 47 and 48 of the first mountain card 41 to the transporter 4 of the second mountain card 42.
When the web-shaped fibrous material F is fed to 9, the transfer rate of the fibrous material F from one doffer 47 to the transporter 49 is about 30%, but also from another doffer 48. As a result, the transfer rate of the fiber material F to the transporter 10 becomes approximately 60% as a whole.
Therefore, the fiber material F sent to the transporter 10
Is about twice as fast as the conventional one, so the web spun from the take-off rollers 27, 28 in the peeling step 17 (described later) is about twice as fast as the conventional one. In addition, the fiber material F is transferred from the two doffers 47 and 48 to the transporter 4
The fiber material F is mixed well (so-called doubling effect) and transferred.

A space S ₂ formed by the cylinder 51, the doffers 52 and 53, and the transporter 54, respectively.
Also, a fiber material guide member 60 is provided, and a fiber material guide member 62 is also provided on the respective transport sides of the doffer 53 and the transporter 54. The fiber material guide member 60 is also configured in the same manner, and when the fiber material F is transferred from the doffers 52, 53 of the second mountain card 42 to the transporter 54 of the third mountain card 43, the fiber material F is also transferred. The same pseudo-randomness is repeatedly given to, and the randomization is further promoted.

Similarly, the card 43 of the third mountain also has a transporter 54, a worker 55, a cylinder 56, and a doffer 5.
It has 7,58. The web peeling process 17 is continuously arranged on the card 43 of the third mountain. The peeling process 17 includes first capacitors 18 and 19 adjacent to the doffers 57 and 58, second capacitors 20 and 21 adjacent to the first capacitors 18 and 19, redirecting rollers 23 and 24, circular brushes 25 and 26, and take-off. It is composed of rollers 27 and 28. The web-shaped fiber material F is accumulated in the first condensers 18 and 19 and the second condensers 20 and 21 while being compressed, and the web is spun from the take-off rollers 27 and 28.

Here, the web spun from the take-off rollers 27 and 28 after being peeled in the peeling step 17 is promoted to be randomized as described above. Therefore,
It helps to increase the mixing ratio of two or more kinds of fiber materials F, and the strength in the length and width can be made to be the same even when making a nonwoven fabric.

The first and second mountain cards 41, 42
The doffers 47, 48, 52 and 53 of this are the transporters 49 of the cards 42 and 43 of the second and third mountains having this diameter.
The diameter is approximately the same as or slightly larger than the diameter of 54.

[0024]

As described above, according to the present invention, the fiber material fed from one card to the next card is transferred from the pair of doffers to the next transporter, so that the transfer rate is Get higher Therefore, the web spun from the peeling step is formed faster than the conventional one, and the efficiency of web formation can be improved. Further, the fibrous material is smoothly fed without being separated by the fibrous material guide member. Next, the transferred fibrous material is given a three-dimensional pseudo-randomness. Therefore, the web spun from the peeling process is promoted to be randomized. Therefore, it helps to increase the mixing ratio of two or more kinds of fiber materials, and the strength in the length and width can be made to be the same even when making a nonwoven fabric.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a first embodiment of a carding apparatus according to the present invention.

FIG. 2 is an enlarged view of an arrow B portion in FIG.

FIG. 3 is a schematic side view of a conventional carding device.

[Explanation of symbols]

44 ... Takein, 46 ... Cylinder, 45 ... Worker,
47, 48 ... Doffer, 49 ... Transporter, 5
9, 60 ... Fiber material guide member.

Claims (1)

(57) [Claims] 1. A taker-in or transporter that stretches the supplied fiber material while unraveling it, a cylinder that further stretches the fiber material that is fed from this take-in or transporter, and a cylinder that cooperates with this cylinder. A plurality of cards having a worker for carding a fiber material and a doffer for feeding the stretched and carded fiber material from the cylinder to the next step are continuously arranged, and the doffer of the one card is arranged. In the carding device that conveys the textile material to the transporter of the next card, the center of the cylinder of one card and the card of the next card
Place the cylinder on each side of the line connecting the center of the re-porter.
And doffer in such a way that it touches the transporter
Each of them is installed and this pair of doffer and transporter
And the space formed by the cylinder and the cross section of the square
Place the fiber material guide member, and
Aiming at the nip point between the pair of doffers and the transporter
To form an acute angle and to rotate this pair of doffers.
A carding device characterized in that the rotation speed of the transporter is faster than the speed .