TW201544644A - Carding machine and method of starting the same - Google Patents

Abstract

A carding machine comprises: at least one worker roller (1) which is designed for woven fiber; a first doffer (3) which is used for collecting a first fiber web from at least one of the aforementioned worker roller; and at least one second doffer (4) which is used for collecting at least one second fiber web from at least one of the aforementioned worker roller. The carding machine also comprises tools (13) which adjust the speed of the doffer according to time change. The setup of these tools is for driving the operation of at least one of the aforementioned first doffer and at least one of the aforementioned second doffer.

Description

Carding device and method of starting the same

The present invention relates to a carding machine apparatus that requires at least one carding machine drum and at least two doffer cylinders (cylindres peigneurs) for combing the textile fibers in the carding machine drum and forming respective primary webs. The invention also relates to a method for emptying such a carding device.

As is well known, in the prior art, the carding machine apparatus requires a main carding machine drum equipped with a feed section which draws the textile fibers and arranges them around the drum and at least two doffer cylinders. . In general, in each subsequent stage of a carding cylinder equipped with a stuffing box (especially a gear-type stuffing box), it is suitable to collect a portion of the fibers that are rolled by the drum to initially form a web. Each respective web is separated from the doffer by a separator and deposited on a conveyor belt. The two webs are successively conveyed by the conveyor belt to subsequent processing units. For example, a water jet coupling device (dispositif de liage par jet d'eau), a paving device (étaleur-nappeur) or the like.

According to the prior art, it is very complicated to start these carding devices, especially for no-load starting. When the machine is not stopped and in particular it is necessary to operate the components of the card directly, the cleaning separator is usually handled by means of a stick-type intervention or by means of a brush, which can be extremely dangerous in existing large-current large-scale equipment.

It is an object of the present invention to reduce the hazard to a worker responsible for operating the device, particularly the device in charge, by providing a safer carding device.

A carding device as defined in claim 1 of the present invention, and an improvement of the carding device is defined in the accessory claim.

Preferably, the carding device has an aspirator capable of pumping fibers accumulated and/or collected by the first doffer for discharging fibers, for example for recirculation to the feed system fiber.

Preferably, the aspirator is arranged to stop pumping before the expiration of the first time interval such that the first web is no longer removed and can be discharged, for example to a conveyor belt.

Preferably, the tool for adjusting the speed of the doffer sets the at least one of the second channels to operate after the first time interval, in particular in the rotation, preferably the speed of the second channel It is basically equal to the speed of the first pass.

Preferably, the second doffer is disposed at a position in the carding device that is lower than the first pass.

According to an embodiment, the carding device comprises a dispenser cylinder arranged between the card cylinder and one or more doffers, in particular the second doffer is located in the distribution Under the cylinder.

Thus, in accordance with the carding device of the present invention, the worker responsible for initiating the device will no longer need to operate the components of the card manually or with the aid of a stick. In the first phase, only the first dove turns, so the fiber Dimensions accumulate on the second doffer that does not rotate. At the same time, more fibers are thus free to reach the first pass and get well accumulating. When the second pass is started, the fibers are accumulated between the drum and the fixed second pass to ensure that the loading speed of the second doffer web can be increased accordingly.

The invention also relates to a method of activating or adjusting fibers on a carding device. The carding device comprises at least one main carding drum, a first doffer and at least one second doffer. The method includes the steps of operating during a first time interval, particularly rotating the first doffer. Relative to the speed of the first pass, the speed applied to the second pass is much lower, even without applying a speed, and then, when the first time interval expires, the second pass is rotated and applied to the The speed of the first pass is substantially the same as the speed of the second pass.

According to a preferred embodiment of the invention, the first web from the first doffer is sucked by the first aspirator for a period of time of the first time interval, and then the suction is stopped, preferably The first web is deposited on a conveyor belt.

After the expiration of the first time interval, a speed is applied to at least one of the second passes, and in particular, the second web is preferably deposited on the conveyor during rotation.

In a preferred embodiment of the invention, the carding device is provided with two doffers.

1‧‧‧Roller

1'‧‧‧Cylinder Roller

2‧‧‧Distributor cylinder

3‧‧‧First Doffer

3’‧‧‧Doff

4‧‧‧Second

4’‧‧‧Doff

5‧‧‧First condenser

6‧‧‧second condenser

7‧‧‧First separator

8‧‧‧Second separator

11‧‧‧Aspirator

13‧‧‧Control systems/tools

30‧‧‧First Doffer

41‧‧‧Second

42‧‧‧ Third Doffer

The description will now be made by way of examples, the following description of the preferred embodiments of the invention: Fig. 1 is an installation diagram of a first embodiment of the present invention.

2 is an installation diagram of a second embodiment of the present invention.

Figure 3 is an installation diagram of a third embodiment of the present invention.

A first type of mounting embodiment of the present invention is shown in FIG. The carding device comprises a carding drum 1 with textile fibers entrained around it, the fibers coming from a feeding device (not shown) located upstream of the drum. The carding device only shows one roller. However, it also relates to a mounting method in which two rollers are arranged in series and only the second roller downstream of the device is shown. A distributor cylinder 2 is installed downstream of the drum, and the fibers collected around the main drum 1 are distributed so that the fibers can be collected by the first doffer 3 and the second doffer 4, each of which contains a gear-type fitting to enable Collect the fibers around the dispenser drum.

Both the first doffer 3 and the second doffer 4 are associated with a splitter 7 and 8 such that the fibers collected by the respective doffers are separated. After the fibers are rotated around the doffer, they are sent to the conveyor. Between the respective separators and doffers, we can also design a cylinder condenser 5 and 6, respectively.

In the case of two conveyor belts, they can be combined into one conveyor belt on which the two webs are transported for subsequent processing, for example, in a water jet combination device for subsequent processing, in paving Subsequent processing in the device, and the like.

The carding device also includes an aspirator 11 for facilitating the suction of the textile fibers collected by the doffer 3 to prevent the textile fibers or a portion thereof from moving onto the conveyor.

The corresponding motor rotation drives the individual rollers and cylinders of the carding device. As is well known, the central control system 13, preferably by means of suitable software and integrated circuits as a tool, controls the speed of the technology and individual cylinders and stops and activates the aspirator 11. The control system 13 can also control the speed of movement.

The method of no-load starting of the carding device is as follows: In the first stage, we drive to rotate the main carding drum 1 and the distributor cylinder 2. In addition, we also drive to rotate the first doffer 3 within the first time interval Δt1. During the first time interval Δt1, the second doffer 4 is preferably stopped. We can also set a slower speed than the first doffer 3, preferably set the speed to zero. During the time period Δt1' within the first time interval Δt1, the aspirator 11 is set to the operating state in which the suction is performed, so that the fibers collected by the first doffer 3 are drawn into the aspirator 11 and not in the middle of the separator. The deposit is deposited on a conveyor belt. At the end of the time interval Δt1' (Δt1' is within Δt1), the suction is stopped, so that the web formed by the first doffer 3 is deposited on the conveyor belt.

When the time interval Δt1 expires, the second doffer 4 is set to a rotating state, so that the second web is deposited on the conveyor belt, and finally the conveyor belt transports the fiber web downstream for subsequent processing, especially before being transported to the paving device. The webs are stacked. At the end of the time interval Δt2, the device is started and the web is produced. No manual intervention is required, especially for fiber accumulation in conjunction with doffers.

The different stages of startup can be summarized as follows:

The first stage,

upper half:

- The first separator 7 is operated to reach its production target.

- The first condenser 5 operates at 90% of the speed of the first separator.

- The first doffer 3 operates at 170% of the speed of the first condenser.

- Feed (not shown) runs at 170% of the speed of the condenser.

The aspirator 11 runs on the first doffer.

the second half:

- The second separator 8 is operated to achieve its production target

- The second condenser 6 operates at 90% of the speed of the second separator.

- The second doffer 4 stopped working.

The purpose of the first stage is to load the carding machine and the first doffer (here referred to as the upper doffer), thus obtaining high quality fibers to improve the deposit on the conveyor belt in the next stage. The aspirator draws all or part of the fiber while the card is running.

When the card is loading the fiber, we enter the second stage.

second stage

upper half:

- The first separator 7 is operated to reach its production target.

- The first condenser 5 operates at 90% of the speed of the first separator.

- The first doffer 3 operates at 170% of the speed of the first condenser.

- Feed (not shown) runs at 170% of the speed of the condenser.

The aspirator 11 is stopped at the first doffer.

the second half:

- The second separator 8 is operated to reach its production target.

- The second condenser 6 operates at 90% of the speed of the second separator.

- The second doffer 4 stopped working.

Compared to the second doffer, the first doffer is located at the upper part of the carding device from the beginning.

The speed of the above components is exactly the same as the speed of the first stage, however the aspirator stops running, the fibers are deposited on the conveyor belt and then enter the third stage.

The third stage

upper half:

- The first separator 7 is operated to reach its production target.

- The first condenser 5 operates at 90% of the speed of the first separator.

- The first doffer 3 operates at 170% of the speed of the first condenser.

- Feed (not shown) to complete 100% of the production target.

- The aspirator 11 is stopped.

the second half:

- The second separator 8 is operated to reach its production target.

- The second condenser 6 operates at 90% of the speed of the second separator.

- The second doffer 4 operates at 180% of the speed of the first condenser.

- The second doffer 4 runs and the web is deposited on the conveyor.

As can be seen from Figure 1, the second doffer 4 is located below the distributor cylinder 2 and the drum 1. The first doffer 3 is located slightly above the second pass and is located next to the dispenser cylinder and opposite the card cylinder 1 .

It should be noted that in the present invention, the use of the terms "first" and "second" does not mean any order of the doffer setting of the card, in particular the manner in which the second doffer may be arranged to collect the drum fibers, Before or contrary to the first doffer.

On the other hand, the diameter of the card cylinder is larger than the diameter of the distributor cylinder, especially 2 to 5 times larger, and the diameter of the distributor cylinder is equal to or greater than the diameter of the doffer cylinder, especially 1 to 5 times larger. For example, when the diameter of the card cylinder is 1500 mm, and the diameter of the distributor cylinder is 700 mm, the diameter of the doffer cylinder is 500 mm.

Another embodiment of the invention is shown in Figure 2, in which the transfer drum mentioned in the distributor cylinder is not involved. Doffer 3' and 4' directly collect the fibers of the cylinder drum 1'. The subsequent description of the carding device with respect to the starting method is identical, the first pass is only driven during the first time interval and then the second pass is driven. Likewise, the control of the aspirator is the same as the control of the aspirator in the first embodiment.

In the third embodiment shown in Fig. 3, in which two second dolphins 41 and 42 are designed, the speed management of the doffer is as follows. In the first phase, only the doffer at the highest point (i.e., the first doffer 30) is rotated at the first time interval Δt1. During the first time interval Δt1, the fibers from the first doffer are sucked, and then at the end of Δt1' < Δt1, the fibers are deposited on the conveyor belt. At the same time, we started two doffers 41 and 42 at the same time. Then, both webs and the first web are deposited on a conveyor belt. According to another embodiment, we can only activate the second doffer 41 after starting the first doffer 3, then once the web of the second doffer 41 is completed, the third doffer 42 is activated to rotate the third doffer 42.

In the present invention, the speed of a doffer is related to the level of the doffer carding fiber, that is, when the doffer is rotated, its peripheral speed is the radius of the doffer multiplied by the rotational speed.

1‧‧‧Roller

2‧‧‧Distributor cylinder

3‧‧‧First Doffer

4‧‧‧Second

5‧‧‧First condenser

6‧‧‧second condenser

7‧‧‧First separator

8‧‧‧Second separator

11‧‧‧Aspirator

13‧‧‧Control systems/tools

Claims (14)

The carding device comprises: at least one carding machine drum (1) provided with textile fibers; a first doffer (3) for collecting a first web from at least one of the carding drums; and at least one second doffer (4) for collecting at least one second web from at least one of the card cylinders; the carding device further comprising means (13) for adjusting the speed of the doffer based on a time change, the tool setting For driving operation, in particular for driving at least the first doffer and at least one of the second doffers, the carding device is arranged such that the tool is able to ensure, in particular, during the start-up process An operating speed within a time interval such that a rotational speed of the first doffer is faster than a rotational speed of the second doffer, and the first time is caused during a second time interval after the first time interval The speed difference between the doffer and the second pass is smaller than the speed difference between the two in the first time interval. The carding device of claim 1, wherein the speed of the second pass is substantially zero during the first time interval. The carding device of claim 1 or 2, wherein the speed difference between the first pass and the second pass is substantially zero during the second time interval. A carding device as claimed in any one of claims 1 to 3, wherein the carding device comprises an aspirator (11) capable of aspirating the said means for discharging fibers The fibers accumulated and/or collected by the first doffer (3), such as fibers used for recirculation to the feed system. A carding device as claimed in claim 3, wherein the first aspirator (11) is arranged to stop pumping before the expiration of the first time interval, such that the first web is no longer removed It can be discharged, for example, onto the conveyor belt (9). The carding device of any one of claims 1 to 5, wherein the tool for adjusting the speed of the doffer sets at least one of the second channels (4) after the first time interval For operation, the speed of the second channel (4) is preferably made substantially equal to the speed of the first doffer (3), especially during rotation. A carding device as claimed in any one of claims 1 to 6, wherein the carding device comprises a distributor cylinder (2), the dispenser cylinder (2) being arranged on the card cylinder ( 1) Between one or more doffers (3, 4). The carding device of any one of claims 1 to 7, wherein the second doffer (4) is disposed in the carding device at a position lower than the first doffer (3). A carding device as claimed in claim 7 or 8, characterized in that the second doffer (4) is located below the distributor cylinder (2). a method of activating or adjusting fibers on a carding device, the carding device comprising at least one main carding drum, a first doffer and at least one second doffer, the method comprising different stages, a first time interval in the stages Internally causing the first doffer to operate at a set speed and causing the second doffer to be slower than the first doffer, after the first time interval, causing the first doffer and the The speed difference of the second pass is smaller than the speed difference between the two in the first time interval. The method of claim 10, wherein the speed of the second pass is substantially zero during the first time interval. The method of claim 10 or 11, wherein after the first time interval, the speed of the first pass is substantially the same as the speed of the second pass. The method of claim 10, wherein the first web from the first doffer is sucked by the aspirator (11) for a period of time during the first time interval, and then the suction is stopped, Preferably the first web is deposited on a conveyor belt. The method of any one of claims 10 to 13, wherein the second time interval corresponds to a continuous state of the carding device.