CN216378519U - Device for processing textile fibers - Google Patents

Abstract

The invention provides an apparatus for processing textile fibres, comprising: a common weighing compartment (5) provided with a measuring unit (6, 6A), at least two feeders (A, B) for feeding the fibre material into the common weighing compartment (5) for preparing a fibre mixture, and at least one flap (arranged between the feeders (A, B) and the common weighing compartment (5) for supplying or stopping the supply of fibre feed to the weighing compartment (5)), and a controller for synchronously controlling the flap (8, 8A) and the feeders (A, B) for preparing the fibre material in a desired mixing ratio. The automated device provides a predetermined mixing composition by accurately weighing the fibers and can mix two or more types of fibrous materials by connecting more feeders to a common weigh bin.

Description

Device for processing textile fibers

Technical Field

The present invention relates to an apparatus for processing at least two fibrous materials, and more particularly to a fibrous material weighing and mixing apparatus on a production line of a spinning frame (the apparatus is located between two bale opening mixers).

Background

Usually, the spinning mills equipped with the production line of the spinning machine, in particular the scutcher machine, are the decisive area for mixing the fibrous material to obtain the desired spun yarn. One of the scutching room spinners is an open-bale mixer, which functions to open the manually fed fibers and relieve the stress on the fibers. Furthermore, it mixes different raw materials (such as natural fibers or chemical fibers) together. In addition, it also provides for the initial removal of dirt, dust and other impurities from the fiber bundle during the mixing process.

Blending is an important process in yarn production, where fibers of different sources, lengths, thicknesses or colors are combined to produce the desired yarn. Blending also refers to blending different types or grades of materials together to produce a yarn with desired properties. The production line employs a hopper feeder system for accurate weighing and more uniform mixing during spinning. In this method, blends are prepared by feeding different fibers through different hopper feeders, each having its own dedicated weighing tank for weighing the materials to achieve the desired mix ratio as a whole.

The known fibre feeders have at least one feed curtain for feeding the fibre material to a bead curtain arranged in series therewith, the bead curtain being an inclined endless belt secured at each end by a drive roller. The annular belt on the outer surface of the angle nail curtain is provided with a series of metal angle nails, and the distribution width of the angle nails is the same as that of the conveying belt. The curtain of pins carries the fibrous material and transports it to the respective feeding chamber. Below/at the outlet of the inlet chamber there is a weighing box equipped with suitable weighing cell means for measuring the contained lint. During fiber preparation, the different fiber material components are typically precisely metered by a weigh hopper feeder. As described in patent US7614121, there is a separate weigh hopper feeder for each material component.

At present, in the actual operation of manual mixing, materials are weighed independently and are mixed and fed through a bale opening mixer after being weighed, and the operation is inaccurate in metering and not economical (more labor is needed).

Despite the automated solutions described above, separate weighing bins need to be provided for each material, adding to the cost.

Therefore, there is a need to develop a new mixing method to improve the productivity and solve the disadvantages of the existing machines.

Disclosure of Invention

The main object of the present invention is to provide a mixing and weighing device for handling at least two or more different fibre components in a forward spinning machine.

It is another object of the present invention to provide a universal weighing device that more accurately mixes different materials in a forward spinning machine.

A third object of the invention is to improve the quality of the mixing process with reduced costs.

The invention therefore provides a device for treating textile fibres, comprising a common weighing compartment, at least two feeders, at least one baffle (arranged between the feeders and the common weighing compartment), and a controller (which controls the feeders and the baffle synchronously to prepare a fibre mixture in a desired ratio). According to the invention, at least two transport rollers may be provided between the feeder and the weighing compartment.

According to the invention, the common weighing compartment is equipped with a measuring unit. The measuring unit comprises a sensor or a weighing cell. The weighing compartment is provided with a compartment door opening device (at least in the form of a hinged flap) for opening and closing the weighing compartment door when required.

According to the invention, the feeder is adapted to feed the fibrous material into a common weighing bin to prepare the fibrous mixture. Each feeder is connected with an opener. Each feeder comprises a feed roller driven by a servo motor, the speed being adjusted according to a predetermined weight or mix ratio of the fibres. Each feeder may comprise a cotton conveying curtain and/or a brad curtain and/or a feed pipe and/or a feed chute.

According to the invention, the hold-down device is used to supply or stop the supply of fibre material to the weighing compartment. Preferably, the apparatus comprises baffles (corresponding to each feeder). The flap associated with the feeder is pivoted or actuated side-to-side about the hinge point to allow two different fibrous materials to flow alternately from the respective feeder to the weigh bin.

Drawings

Figure 1 shows a blending device and its arrangement in a forward spinning machine according to the prior art.

Fig. 2 shows an integrated bale opener mixer with a common weigh bin in a spinning-precursor machine according to the invention.

Fig. 3 shows the working condition of the feeder B of the integrated bale opener with common weighing function according to the invention.

Fig. 4 is an enlarged view showing a weighing device of the spinning-precursor machine according to the present invention.

Fig. 5 and 6 show another embodiment of a weighing device according to the invention.

Detailed Description

Detailed description of the invention

The mixing device in the prior spinning machine is shown in figure 1. The cotton mixer or feeder comprises a cotton conveying curtain, a brad curtain, a feeding roller, a weighing box, a measuring device with a sensor and a conveyor belt. When the fibre material flows through the cotton conveying curtain (1), the cotton conveying curtain moves in the direction of the arrow (as shown in the figure). The material is transferred from the cotton feed curtain (1) to the gusset curtain (2) (the gusset curtains are arranged obliquely and fixed at each end by a drive roller). The corner curtain rotates in the direction of the arrow (as shown). The curtain of pins (with a plurality of metal pins on the surface) then carries away the lint. The corner-spike curtain (2) conveys the fiber material (3) to a weighing box (5) by means of a feed roller (4).

The feed roll (4) rotates counter-clockwise (as shown) and the material or lint falls into the weigh bin (5), weighing the first feed. The weighing box comprises a measuring unit with a sensor or a weighing unit arranged at the top, and a box door opening device is arranged below the weighing box (5).

After weighing the first fibre material to the desired amount, the door of the weighing compartment is opened and the measured amount of fibre material falls onto the conveyor belt (10). An adjacent similar device is used to measure the amount of the second fibrous material, and the transported fibrous material is mixed with the previously weighed first fibrous material in the next mixing chamber or conveyor. Thus, a single weigh hopper feeder is equipped with a dedicated weigh bin for use with a single bale opener blender.

Accordingly, the present invention provides an apparatus for processing textile fibres, wherein at least two fibre materials are measured in a common weighing compartment and the measured quantities of material are normally fed to the next process for further opening and mixing for feeding to the next spinning preparation machine.

The apparatus for treating fibers of the present invention comprises at least two bale opening blenders integrated with a single/universal weighing unit. Correspondingly, the device comprises a cotton conveying curtain, a brad curtain, a baffle device, a universal weighing box and a measuring unit with a load sensor. The cotton delivery curtain delivers material to the brad curtain as the material flows through the cotton delivery curtain. The corner curtain is arranged obliquely with each end fixed with a drive roller. The outer surface of the angle nail curtain is provided with a plurality of metal nails which are distributed with the same width as the conveyor belt. With the help of adjacent feed rolls, the fibers are transferred from the gusset curtains to a universal weighing cabinet.

The feed roller and shutter device are used to open and close the feeders for the respective materials. Upstream of the common weigh bin there is provided a baffle arrangement for selectively feeding material into the weigh bin. In the invention, there is at least one flap for feeding the weighing compartment, wherein the flap is opened or closed depending on the desired mixing parameters. Here, when one shutter is in the active or open state, the other shutter is closed and two different materials flow to the respective feeders. For example, cotton flows to feeder a and polyester or any synthetic fiber flows to feeder B. If the flapper of feeder B (i.e., the polyester feeder) is closed, the material enters the weigh bin through the opened flapper of feeder A (i.e., the cotton feeder). Once the desired weight is reached, the shutter of feeder a will close, and then the shutter of feeder B opens, feeding the corresponding material into the weighing bin.

The feed rollers of both feeders are provided with servo drives, so that the roller speed can be adjusted according to the predetermined weight or mix ratio of the fibres. The predetermined weight may be calculated from the mixing ratio or mixing parameters and the weighing compartment capacity. Furthermore, the homogeneously mixed material will flow out of the weighing device and be transferred to the next processing equipment.

Fig. 2 shows an integrated bale opener or mixing apparatus according to the invention with a common weigh bin.

As shown in fig. 2, two bale openers (not shown) are integrated with the single/universal weigh bin (5) by means of feeders. Each material scrap (e.g. first (3) and second (3A) fibrous material each from an opener blender) is alternately filled into a common/single weigh bin (5) until a predetermined weight is reached. The predetermined weight is calculated based on the desired mixing ratio and the weigh bin capacity. Since the process is automatically performed by a controller (not shown), the results are more accurate and less manual intervention is required.

The apparatus shown in fig. 2 comprises two hopper feeders, namely feeder a and feeder B, a universal weighing box (5), measuring cells (6, 6A) with sensors or weighing cells, baffle devices (7, 7A), guide rollers and conveyor belts (not shown). Each feeder comprises a cotton conveying curtain (1, 1A), a brad nail curtain (2, 2A) and a feeding roller (4, 4A).

In a feeder A, a first fibrous material (3) flows towards a cotton conveying curtain (1), and the cotton conveying curtain (1) rotates according to the direction shown in the drawing. The material is thus fed to the inclined spike curtains (2) as a result of the forward movement of the cotton feed curtains (1). The inclined curtain of brads transports the first fibre material (3) upwards. The gusset curtain (2) then conveys the first fibre material (3) to a weighing bin (5) by means of a feed roll (4).

The feeding roller (4) is driven by the servo driving device to rotate anticlockwise (as shown in the figure), and the roller speed can be adjusted according to the required feeding weight. The feed rolls may be run at a faster speed during the initial or initial fiber fill process and then decelerated to rotate at a slower speed at the end of the fill process. When the weighing compartment (5) is filled with the first fibre material (3) to the desired amount, the filling process of the second fibre material (3A) has not yet started. When the desired amount of the first fibrous material (3) is reached, the speed of the feed roll servo drive is reduced to slow down the material supply. In the same way, the transfer rollers (9, 9A) also fill the weighing compartment (5) with fibre material at different speeds. The transfer rollers (9, 9A) can be selectively configured according to different equipment parameters, depending on the material to be processed, and therefore, the filling of the material can be achieved without providing the transfer rollers (9, 9A).

As shown in fig. 3, the feed roller with the shutter device is used to open and close the feeder corresponding to a desired feed. Two baffles (8 and 8A) are arranged above the weighing box (5). The two flaps (8, 8A) can be pivoted or driven to the left or right about the hinge point. If one shutter is in the closed position, the other shutter will be in the active or open position so that two different materials flow alternately from the respective feeders to the filling position. For example, if cotton (3) is flowing at feeder a, the flow of polyester or any synthetic fiber (3A) slows and is stopped by the baffle (8A) in feeder B. That is, one flap (corresponding to the polyester feeder) is closed at a time, while the other flap is opened to allow feed (corresponding to the cotton feeder) to flow to the weigh bin until the desired material weight is reached. After the desired weight is reached, the corresponding flap will close the feed, the other flap will be fully opened and begin feeding the weighing compartment (5). The weighing compartment (5) comprises at least one measuring unit with sensors or weighing cells (6 and 6A) on the top, and below the weighing compartment (5) there are door opening devices (7, 7A). The door opening device comprises at least one hinged flap (7, 7A) which can be opened or closed when required. According to the invention, a larger capacity weighing compartment is used for weighing and mixing the fibre material. The weighing should be done in a manner that ensures that up to 70-90% by weight of the fibrous material falls freely from the cotton feeder. In any case, after reaching a predetermined percentage, the shutter is moved close to the conveyor rollers (9 and 9A), controlling the weight of the material fed into the weighing tank to ensure the accuracy of the delivered quantity. The apparatus thus makes it possible to fill the weighing tanks alternately with each predetermined mass of material according to the desired mixing ratio.

Fig. 3 shows the filling position of the fibre material through the feeder B according to the invention. As mentioned above, feeder B works in a similar manner to feeder a. Here, the flap (8A) is in the open position to feed the second fibrous material, such as polyester or mixed material (3A), to the weighing compartment, while the other flap (8) of the feeder a is in the closed state. By increasing the feed rate of the respective feed rollers (4A), the material (3A) is made to flow at a faster rate, thereby filling the weighing box in a shorter time. The polyester or blend material (3A) continues to be fed into the weigh bin until the desired weight of material is achieved to meet the desired blend ratio. After the weighing tank is filled with fibres of the desired mass, the flap (8A) closes the feed. At the same time, the flap (8) is also in the closed state, i.e. the feeder a is in a stopped/low speed state, so that it does not feed any material into the weighing compartment (5). The feed speed is slowed down and the corresponding flap (8, 8A) closes, blocking the flow of material to the weighing compartment (5). An enlarged view of the weighing system, as shown in fig. 4, illustrates this process. Initially the material flows in at a high rate until a calculated or predetermined maximum mixing ratio is reached. For example, for a desired blend ratio, a 100Kg blend would consider using a blend of 60/40 polyester and cotton materials. Feeder a provides cotton material (3) and feeder B provides polyester material (3A). During the feeding and weighing operations, the feeder a is in operation and the corresponding shutter (8) is open. Initially the feed roll (4) is run at high speed to reach a maximum weight of 35Kg and then run at reduced speed to fill the remaining 5Kg to reach the exact weight of 40Kg to fill the weighing bin in a shorter time. Likewise, feeder B was used to fill 60Kg of polyester material into a weigh bin. According to the invention, the feed rollers can be servo-driven, and the roller speed can be adjusted according to the required weight or mixing ratio. After the weighing process is completed, the mixture of the first material (3) and the second material (3A) falls onto the conveyor belt (10) by opening the hinged flaps (7 and 7A). The weighed fiber is then sent to the next processing equipment. After the material falls onto the conveyor belt (combination or two different doses), mixing can be performed in another machine or in an in-built mixing chamber.

In another embodiment of the present invention (as shown in fig. 5 and 6), the filling of material can be achieved without the use of transfer rolls (9, 9A) since transfer rolls are not an optional device. The material flow to the weighing compartment is controlled entirely by the flaps (8, 8A) at the outlet of the feed rollers (4). The respective feed rolls (4, 4A) are stopped/started to run by closing or opening the shutter (8, 8A). It is also possible to mix the two materials and weigh them as a whole to obtain a pre-mixed fibre component.

The advantages are that:

1. the apparatus of the present invention is automated and therefore easy to prepare mixed materials in accurate proportions and in accurate quantities.

2. Less manual intervention and ease of preparation of any of the various amounts of the mixed components.

3. Compared with the existing machine, the occupied space is smaller.

4. The automatic device allows mixing of two or more different types of fibre material by accurately weighing the fibre material to a predetermined mixing composition and allowing more feeders to be connected to a common weighing tank.

Any alterations, modifications and variations within the meaning and range of equivalents are intended to be within the spirit and scope of this disclosure. It is to be understood that the different aspects and embodiments disclosed above may be combined with each other in any combination. Various aspects and embodiments may be combined to form another embodiment of the invention.

Claims (9)

1. An apparatus for processing textile fibres, comprising:

a common weighing compartment (5) provided with a measuring unit (6, 6A);

at least two feeders (a, B) adapted to feed the fiber material into a common weighing bin (5) to prepare a fiber mixture, each feeder (a, B) being connected to an opener;

at least one baffle device arranged between the feeder (A, B) and the common weighing compartment (5) for supplying or stopping the supply of fibrous material to the weighing compartment (5); and

a controller configured to control the feeders (A, B) and the baffles (8, 8A) synchronously to prepare a desired proportion of the fiber mixture.

2. The apparatus according to claim 1, characterized in that each feeder (A, B) comprises a feed roller (4, 4A).

3. Device according to claim 1, characterized in that each feeder (A, B) comprises a cotton-conveying curtain (1, 1A) and/or a brad (2, 2A) and/or a feed pipe and/or a feed chute.

4. Device according to claim 2, characterized in that the feed rolls (4, 4A) are driven by servo motors to adjust the roll speed according to a predetermined weight or mix ratio of the fibres.

5. Device according to claim 1, characterized in that the measuring unit (6, 6A) comprises a sensor or weighing unit.

6. The device according to claim 1, characterized in that at least two transport rollers (9, 9A) are arranged between the feeders (a, B) and the weighing compartment (5).

7. Device according to claim 1, characterized in that the weighing compartment (5) is provided with a door opening device (7, 7A) comprising at least one hinged flap which can be opened or closed when required.

8. The apparatus of claim 1, wherein the apparatus is provided with a baffle corresponding to each feeder.

9. The device according to claim 8, characterized in that the flaps (8, 8A) corresponding to the feeders (A, B) are turned or driven from side to side about the hinge point so that two different fibrous materials flow alternately from the respective feeders (A, B) to the weighing compartment (5).

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