JPH0413451B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention obtains measurements of the amount of fiber in a device in a spinning pre-processing facility, such as a storage device downstream of a textile fiber opener and/or clearer, and converts this into an electrical signal. The present invention relates to a method for controlling the amount of fiber supplied to the device, in which the electric signal is converted and supplied to an adjustment member that changes the amount of fiber supplied to the device in accordance with the signal, and a device for implementing this method.

In practice, the material passage through the opener and clearer is usually controlled in such a way that the material transport rollers of the opener and clearer are driven in a stop-and-go manner depending on the conditions of the subsequent equipment. The subsequent device is in principle a storage device or contains a storage device. The loading status is typically detected by a yes/no type sensor, such as a photocell or electronic pressure switch (EDS) for sensing back pressure, which is an indication of the loading status of subsequent equipment. This sensor controls activation or deactivation of the material transport drive according to the yes/no sensing. This method has the disadvantage that no cotton opening or cleaning is performed when the system is at rest, whereas a higher than average flow rate must be processed during operation. However, since the lower the flow rate, the better the cotton cleaning and opening results are obtained, the longer the pause time, the worse the treatment results.
If the ratio of idle time to active time is 50:50, twice the average amount must be processed during operation.

The object of the invention is to avoid the above-mentioned disadvantages and to propose a method and a device for carrying out the method, which allow particularly good cotton cleaning and opening results.

This object is achieved by the features specified in claim 1.

The essence of the invention is to maintain the material transport drive in operation during the operating hours of the opener and clearer. For this reason, the loading state of the subsequent device is detected in analog form, and the speed and speed of the material conveyance drive means is adjusted in accordance with the detection result. This adjustment can be carried out automatically by control means. The column height in the subsequent chute or the pressure in the subsequent system form the actual value, and the rotational speed setting means of the material feed roller of the opener or clearer constitute the adjusting member.
This control is carried out continuously or stepwise in a purely analog manner. In a known method using a 50:50 stop-and-go method, for example, 500 kg/h can be produced in a short time.
of fiber material must be processed, but in the present invention this can be reduced to 250 kg/h in continuous operation. Therefore, the cotton cleaning efficiency is significantly increased.
In order to achieve a uniform opening degree over time, the weight of the treated fibers per tooth or pin of the opener must remain constant. Therefore, as stated in claim 2, the rotational speeds of the material conveying drive means and the opening roller drive means must be maintained in a proportional relationship. If the rotation of the material driving means is fast, the rotation of the opening roller must be proportionally fast. This condition can be met economically by using common drive means. That is, a drive motor whose rotational speed can be controlled drives a beater (spreading roller) via a transmission device. The gear reduces the motor speed or the beater speed or the intermediate speed to a very low feed roller speed for driving the material.

The present invention provides a method for carrying out the method according to the present invention, in which a control means is connected in series to the fiber content measuring member, and this control means is connected to a controllable drive means (motor control means, drive motor) of at least one feed roller. It also concerns a suitable device. In a particularly preferred embodiment, a control means is connected in series to the fiber amount measuring member,
This control means is connected to the controllable drive means of at least one opening roller.

Claims 5 to 7 describe other preferred embodiments of the invention.

The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

FIG. 1 shows a known mixed batting/cleaning/spreading device comprising, for example, a clearer 1, a condenser 2, a finishing opener 3, a blower 4, a pneumatic wrap feeding mechanism 5 and a card 6. As the clearer, for example, a Zurichler type RV, RK or RS can be used. The clearer 1 is fed from the charging chute 7. That is, the fiber material is removed from the charging chute 7 by two take-in rollers 8, 9 and fed to a feeding device consisting of a conveyor belt 10 and two feed rollers 11, 12. Feed rollers 11, 12 feed the fiber material to the opening roller 13, which passes through a duct 14 to the cage rollers of the condenser 2 and then to the charging chute 15 of the finishing opener 3, for example the charging chute BS. A device including a plurality of photocells 16a is disposed in conjunction with the charging chute 15 on its side as a measuring member 16 for measuring the height of the fiber material column. The measuring member 16 is connected to the motor control means 19 via a control device 17 including a target value setting means 18.
It is connected to the drive motor 19 of the feed rollers 11 and 12 including a. Downstream charging chute 15
An analog electrical signal is generated in dependence on the fiber content measurement value and acts on a motor adjustment means 19a as a controllable adjustment member for a continuous drive motor 19 that drives at least one of the feed rollers 11, 12 of the clearer 1.

The fiber material reaches from the charging chute 15 via two take-in rollers 20, 21 and a conveying element 22 to two feed rollers 23, 24, by which it is fed to the opening roller 25 of the finishing opener 3. Ru. From this opening roller, the fiber material is conveyed by means of a blower 4 into a pneumatic conveying duct 26 and reaches an upper supply chute 27 of the wrap feeder 5 and then a lower supply chute 28. Installing an electronic pressure switch 29, for example a Zurichler EDS, on the wall of the supply chute 28;
A drive motor 32 comprising motor control means 32 a for at least one feed roller 23 , 24 via a control device 30 comprising setpoint value setting means 31 .
Connect with.

In FIG. 2, the feeding device includes a feed roller 33 and a feed table 34 for feeding fiber material to the opening roller 13 (beater). Although not shown, electric signals from a control means (corresponding to that shown in FIG. 1) are transmitted to two motor control devices 36,
37, reaches a multi-linked potentiometer 35 connected in series with SIMOREG, for example. Drive motor 3 for feed roller 33 and opening roller 13 in series with motor control device 36, 37, respectively.
8 and 39 are connected to each other. The multi-linked potentiometer 35 serves as a proportional control means, and by appropriately adjusting the multi-link potentiometer 35, the rotational speed of the feed roller 33 and the rotational speed of the opening roller 13 can be changed proportionally. can.

FIG. 3 shows a drive motor 38 connected in series with the motor control means 36, which is connected to the opening roller 13, and a gear 40 that drives the feed roller 33.
An embodiment in which both are connected is shown. In this embodiment, the gear 40 serves as a proportional control means, and by appropriately changing the gear 40, the rotational speed of the feed roller 33 and the rotational speed of the opening roller 13 can be changed proportionally.

In FIG. 4, a drive motor 38 is connected in series with the motor control means 36, and a gear 41 is connected in series with the drive motor.
An embodiment is shown in which the gears are connected so that the opening roller 13 and the feed roller 33 can be driven. In this embodiment, the gear 41 serves as a proportional control means, and by appropriately changing the configuration of the gear 41, the feed roller 33
The number of rotations of the opening roller 13 and the number of rotations of the cotton opening roller 13 can be changed proportionally.

Note that the device or device group referred to herein means not only the storage device and the opener or clearer, but also all devices or device groups that can be incorporated into the mixed batting equipment.

FIG. 5 shows a plurality of devices or device groups connected in series, namely a bale opening machine 46 (BDT), a capacitor 45
(LVS), supply chute 7 (BS), clearer 1
(RN), capacitor 2 (LVS), supply chute 1
5 (BS), a finishing opener (FO), a card cotton feeder 5 (FBK), and a card 6 (DK). The electrical connections of the device or devices are as shown. As is illustrated in more detail in FIG.
The finishing opener 3 has an adjustment member (drive motor 3
2) will be linked. In addition, setpoint value setting means for the control device (as shown in FIG. 6) are also provided.

In FIG. 6, the card 6 is equipped with a signal generator 40 in the dosing drive, the voltage generated by this generator being a measurement of the dosing speed or production speed of the card. This signal is the target value setting means 42
is supplied to a control device 41 including. Control device 41
is connected to a motor control means 43a of the FBK feed roller 27a and a freely controllable drive motor 43. With this configuration, the feed roller 27a can be adjusted (basic adjustment) according to the predetermined card production speed. The production speed of the curd is determined by a bale opening machine 46, e.g.
It can also be used as a guideline for the amount of dotting fiber in BDT (basic adjustment). For this purpose, the production speed signal from the generator 40 is supplied to the control circuit 47 of the bale opening machine 46 and calculated by the circuit. In addition, charging chute 1
It is also possible to correct the basic doffing amount of fiber material coming from the card in the bale opening machine 46 depending on the charging height of 5. Furthermore, the target production value on the card can be corrected from the control circuit 47 of the bale opening machine 46. This is particularly significant if the control circuit 47 detects that the doffing member 46a for the fiber bale 48 is constantly being overloaded. The control circuit 47 is not only electrically connected to the drive motor 46b (moving drive means) of the bale opening machine 46, but also connected to the doffing member 46a.
It is also electrically connected to a drive motor (not shown) that adjusts the height of the plate.

It is also possible to give given target values to the control devices 17, 30, 41 from the control calculation circuit.

The measuring element 16 in the charging chute 15 detects that there is a constant lack of material in the charging chute 15, even though the requirements are met in the preceding devices, such as the clearer 1 and the bale opener 46. If detected, this detection result will be sent to card 6.
can slow down card production.

Figure 7 shows single equipment control means and equipment group control means (for example LVS, BE, SRS, RN or MTV).
MPM) interactions. In Figure 7, Axiflo is a cotton cleaning device, MPM is a multi-mixer,
MTV indicates a transfer fan, BE indicates a supply device, SRS indicates a step clearer, and other symbols are the same as the device explained in FIG. The two control devices can cooperate with each other to achieve as seamless a material flow as possible without a central control device or without the aid of a higher-level control unit 49 (for example a control computer). When using a host control unit, the entire facility can be programmed from the control console depending on the application. When processing alternating textile material parts in a particular equipment line (e.g. cotton, stapler, etc.), the material path, i.e. (depending on the material part), can be bypassed, such as the cotton washing section, or can this cleaning section be bypassed? The control computer can determine whether or not the cotton section etc. can be automatically operated. The values for each material part (regarding the type of fiber processing technology or equipment) can be calculated, stored and regenerated as required. It is also possible to preset the number of cards so that the required production volume is achieved. The control computer can also present material processing to the operator according to a schedule.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing a control device of the present invention in a cotton cleaning/spreading device, and FIGS. 2 to 4 schematically show various embodiments of a rotation speed control device for a feed roller and a cotton opening roller. A schematic plan view, FIG. 5 is a block diagram schematically showing the electric circuit configuration of the control/regulating device of the spinning pretreatment equipment, and FIG. 6 is a block diagram of a specific mixed batting/carding machine and associated electric circuit. FIG. 7 is a block diagram schematically showing the electrical circuit configuration including the control computer. 1... Clearer, 3... Finishing opener, 6... Card, 7, 15, 27... Storage device, 11, 12; 2
3, 24; 33... feed roller, 13, 25...
Opening roller, 16, 29... fiber amount measuring member, 1
7, 30... control means, 19, 32, 38, 39...
Drive motor, 19a, 32a, 36, 37...Motor control means, 40, 41...Gear.

Claims (1)

[Scope of Claims] 1. A pretreatment facility for spinning comprising a fiber processing device having a feed roller and an opening roller, and a fiber storage device connected downstream of the device to receive treated fibers from the device. A method for controlling the amount of fibers supplied to the fiber processing device, characterized in that the method comprises the following steps: a) controlling the respective adjustable drive means during the operation of the spinning pretreatment equipment; b. generating a measurement value indicative of the amount of fiber at each point in time in the fiber storage device; c. an analog electrical signal corresponding to the measurement value; d applying said analog electrical signal to said adjustable drive means of each of said feed roller and said opening roller to adjust the rotational speed of said feed roller and said opening roller to increase the number of rotations of said feed roller and said opening roller; Steps that change proportionally to each other as a function of quantity. 2. A fiber processing device having a feed roller, an opening roller and adjustable drive means for rotating the feed roller and the opening roller, and a fiber storage device coupled downstream of the device to receive processed fibers from the device. A fiber supply amount control device for controlling the amount of fibers supplied to the fiber processing device in a pre-processing facility for spinning, comprising: a) a signal connected to the fiber storage device and indicating the amount of fiber in the fiber storage device; a sensor for generating a signal, b coupled to said sensor for receiving a signal from said sensor and coupled to said adjustable drive means for providing an analog control signal to said drive means to control said feed roller and said opening roller; control means for changing the rotational speed of the feed roller and the cotton opening roller as a function of the amount of fiber in the fiber storage device; and c. A fiber feed rate control device comprising proportional control means operatively interconnecting the rollers. 3. The proportional control means comprises a potentiometer having an input coupled to the control means for receiving the analog control signal from the control means, the potentiometer having a first output and a second output. and the adjustable drive means includes a first drive motor coupled to the first output end to rotate the feed roller and a second drive motor coupled to the second output end to rotate the opening roller. A fiber supply amount control device according to claim 2, characterized in that it has the following. 4. said adjustable drive means comprising a drive motor coupled to said control means for receiving an analog control signal from said control means, said proportional control means comprising a reduction gear, said drive motor 3. The fiber supply amount control device according to claim 2, wherein the device is directly connected to one of the two rollers and connected to the other roller by the reduction gear. 5. said adjustable drive means comprising a drive motor coupled to said control means for receiving analog control signals from said control means, said proportional control means coupled to said drive motor; a reduction gear having a first outlet end connected to the feed roller and a second outlet end connected to the opening roller, the first outlet end and the second outlet end having different gear ratios; 3. The fiber supply amount control device according to claim 2, wherein the device is configured to transmit motion.