JP2529272B2 - Self-acting spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In the state of the art today, the movement of the main parts of a spinning machine is generally achieved by means of three electric motors. The main motor is used to operate the spindle. The second motor actuates a group for the operation of the pan holding bench (and / or the spindle holding bench), the cylinder and the feed drum, and the rod and the counter rod via a mechanical connection. A possibly double-acting third electric motor drives the rotation of the rod and the counter-rod during the secondary winding stage at the end of the spindle pick-up. The various steps performed by the actuating means described above are synchronized by electronic and electromechanical devices. The positioning of the winding rod at the beginning of the winding of one stitch is driven, for example, by a pneumatic piston.

Independent actuating means with a variable speed motor for the axis of relative displacement between the pan holding bench and the spindle holding bench, and for the axis actuating the feed cylinder are also provided.
Known in the art.

For the majority of the actuating and actuating members, generally mechanical type coupling and transmission means are employed, which are often machine-adjustable.

The present invention is directed to a system for operation and control of a self-spinning machine that can simplify mechanical technology, streamline control and chaining, reduce dead time, and improve binding characteristics.

Substantially, according to the present invention, information about the performance of the process is obtained in order to individually obtain all the motions, which may be partial and translational motions, necessary for carrying out all the working cycles A to F below. A system is provided that uses a central processing unit (CPU) for receiving processing, and in particular for controlling and regulating many motors and / or actuating members.

A-spindle rotation, B-relative displacement between pan holding bench and spindle holding, C-cylinder rotation, D-pan unwinding drum rotation for feed, E-winding rod actuation, F-counter rod. Operation.

The usual technique of intermittent spinning can be optimized,
Cannot be transformed. In fact, the same procedure is carried out by means of a mechanical group and a motor, which determine the time sequence of the movements of the spindle, the movable bench, the cylinder, and the drum for the feeding of the rod or of the counter rod, by means of a well-defined time. This is accomplished by actuating the previously mentioned components in a cycle.

Thus, the use of individual actuating means (variable speed or other types of electric motors) guided individually by the microprocessor unit allows the electromechanical drive and synchronizing members to Simplification and replacement are especially obtained.

The actuation system in question is provided for actuation of the spindle, actuation of the movable bench (spindle and / or feed bench), actuation of the cylinder, actuation of the lobe feed, actuation of the winding rod, and actuation of the counter rod. Was given 1
Individual peripheral adjustment modules and central processor units for one or many components may be provided.

Transducers are provided for picking up information on the immediate status presented to various members.

The actuation system in question can also be provided with optical sites or similar control means for the placement and subsequent correction of the sections of material fed to the cylinder.

The actuating member comprises a variable speed-often a step and / or variable speed electric motor, such as a DC motor.

 All adjustments can be performed while the machine is running.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 of the drawings shows a conventional technique, and FIGS. 2 to 4 show an embodiment of the present invention.

In the drawings, reference numeral 1 designates a structure for a bench 2, for example a stationary bench 3, of spindles 3 arranged in rows with an inclined axis. The spindle 3 is suitably driven, for example by a motor 5 via suitable transmission means, or by individual motors. Reference numeral 7 designates a fixed structure which forms a track 7A for the back and forth movement of the carriage structure 9 which forms a pan holding bench for the pan or beam S. Reference numeral 12 is
A drive for driving a shaft 14 for a group or structure 9 is shown. The structure 9 is used for driving a shaft 16 of a pair of cylinders 18, and a device 16 for driving the material of the stern or beam S contacting the cylinders 22 to the cylinders 18. Support the drive unit 20. The structure 1 is further provided with respective shafts of the winding rod and the counter rod which are respectively actuated by motors 28 and 30.
24 and 28 are provided.

The present invention provides direct actuation of the shafts 4,14,18,22,24,26 described above. Individual actuation can be accomplished using one or several electric motors or variable speed motor reducers on each axis, such as those described above (stepping motors or other types of (Actuating means), etc., by means of a suitable central control module by means of a microprocessor central unit which is interposed in the input / output peripheral unit for the operator to enter or control data in the system. Driven.

Substantially, the shaft movements described above perform the spinning cycle stages of feeding, draft twisting, stopping or cutting, knotting and winding, and secondary winding at the end of spindle pick-up. These movements are provided, coordinated and controlled by the microprocessor central unit, which can, depending on the circumstances, convey certain actions to other processors.

As an example that should not be considered in a limiting sense, the structure of the system is shown in block diagram form in FIG.

The central microprocessor unit 52 includes a motor, input / output peripheral units (keyboard, video unit,
A card is connected for the setting of transducers (such as printers), storage modules and axis motion sensing. The storage unit is indicated by 54, the parameter insertion unit is indicated by 56, and the output unit (video, printer) is indicated by 58.

The system of FIG. 4 can have a single microprocessor, in which case the data processing is in the central unit 5 which leads to a control card or module 60,62,64,66,68,70.
2, or concentrated in the central microprocessor 52 and other processors. In this case, the processing work is split into a central unit and other processors. Each adjustment module can generally actuate and / or achieve one or more axes and / or can hold one or many processors. For example, always referring to Figure 4,
According to one mode of operation, the central unit 52 then carries out the actuation and the adjusting module carries out the adjustment of the individual actuating means. In particular, the module 60 controls the spindle motor 5, the module 62 controls the bench motor 12, the module 64 controls the cylinder motor 16, and the module 66 controls the feed motor 20. Module 68
Controls the motor 28 for the winding rod and
70 controls the motor 30 for the counter rod. Code 5
A, 12A, 16A, 20A, 28A and 30A represent transducers, which are associated with individual control motors or components that provide return data to the microprocessor 52 and / or associated processor. Adjustments of the spindle, bench, cylinder, feed, winding rod can also be made in terms of speed or position. Instead, the actuation of the counter rod is done by adjusting the torque.

The achievement of the various stages of the spinning cycle by the movement of the various members occurring in the predetermined tense cycle is obtained by the execution of a program (software) physically located in the memory support of the system. . The achievement of stages can be controlled in the video device. Program input parameters are
Be able to carry out special working conditions.

Digital work data and parameters can be entered from a keyboard located on the machine or from a remote computer connected to them, in each case these data being stored in a data carrier. Operating parameters and machine monitoring can be provided to machine video and / or printers, or can be obtained from a remote computer.

 The various stages can be summarized as follows.

Simultaneous movements of the pan holding spindle or the spindle holding bench or both of these benches by the shaft 14 during the feed actuation, together with the variable speed and braking of the bench during the feed and draft stages, and during winding and bench reentry. Controlled via software to allow adjustment of acceleration parameters, and possibly to change in needle length, with consequent automatic adjustment of acceleration and braking parameters . According to this,
The operating parameters can be optimized, resulting in improved yarn quality over that provided by existing machines. With mechanical devices in existing machines, loose and slightly flexible adjustments can be achieved, but the length of a single needle or bench run is generally fixed or only changed by complex mechanical variants. I can't.

The feed synchronization between the drum 22 and the cylinder 18, i.e. between the groups driven by the motors 16 and 20 can also be optimized. In machines with mechanical adjustment means, the control of the cylinder is withdrawn from the movement of the movable bench via a mechanical transmission member (such as a chain) that also allows perfect synchronization, and the feed drum is Actuated by the shaft, these peripheral velocities relative to the peripheral velocities of the cylinder are then manually adjusted by mechanical alteration means, usually each time the lot of material is changed. . In contrast, in the present invention, this adjustment is utilized by the keyboard or in the previous work of similar materials, so that important regulation and flexibility of change are obtained even during the working phase. This can be achieved by resetting the speed ratio (stored value).

In a possible embodiment, automatic control of the synchronization between the drum 22 and the cylinder 18 is realized by means of a sight (especially an optical sight) whereby the drum 22
The distribution of the average section of the lobe between the cylinder and the cylinder 18 can be evaluated and the peripheral speed of the drum controlled in one direction or the other in order to compensate for this to keep said distribution between the two sites. it can.

As far as the draft stage actuated by the shafts 14 and 18 according to the invention, the conventional system is able to obtain step adjustment between the three draft states during the power stage of the bench, The actuation of two electromagnetic clutches held in the mechanical head makes it possible to obtain a zero draft, a partial draft with a predetermined transmission ratio and a full draft.

According to the present invention, the draft function determined by entering the draft parameter from the keyboard is
Any combination is possible and the value and its extension can be adjusted to cover the entire length of one stitch (draft and count data for lobes and threads). For the draft condition of cyclic use, some properly classified forms are
It is programmable and can be recalled through the keyboard by code. In addition, by supplying draft data at many disjointed points along the bench run, and by supplying working parameters (input and output counts, number of twists inserted, etc.) The draft function can be programmed from. The correct factor will probably allow for automatic draft and count adjustment.

As far as the twisting stage is concerned, to date, the maximum rotational speed of the spindle which causes such twisting is reached after a time set by the operator. With the present invention, it is possible to adjust the rate of twist insertion in a truly generalized manner and to calculate their numbers according to different measuring systems. In addition, today's equipment for twist calculations can be eliminated because the parameters can be set from the keyboard along with the cycle parameters and are available at the output unit (such as 54 and / or 58) at the true time.

When the movable bench is in the maximum open position or the next position relative to the winding and the twisting stage is completed, according to the invention, it is usually necessary for the working of yarns with different characteristics, for example: Various treatments can be taken in a flexible manner. The above treatment is, for example, as follows. -Supplying an additional lobe to compensate for the shortening of one stitch due to the twisting of the actuation of the shaft 18 and the cylinder 22. -Partial re-entry of the movable bench by actuation of the shaft 14, i.e. by the motor 12, with adjustable bench run and intervention times. The synchronized actuation of the shafts 14, 18 and 22 of the movable bench during the winding stage in order to avoid excessive concentration of twist towards the feed cylinder due to the rubbing action of the yarn on the yarn guide. Supply of auxiliary lobes upon re-entry.

During the stop or disconnection phase (which is obtained by manipulating the spindle 3 of the rod 24 and the counter rod 26), the rotation reversal of the spindle and the complete synchronization of the movement of the rod are caused by the movement of the counter rod. It is then necessary to unwind the wrongly wound turns on the spindle and to correctly position the rod at the start of winding while recovering the portion of yarn released from the spindle. To date, the rotation of the spindle is achieved by the same motor that provides its control during the twisting stage, and the movement of the rod is actuated by a mechanical or mechanical pneumatic system. Instead, according to the invention, within the control of the computer at various stages of the mechanical cycle, the rotation of the spindle transmitted to the associated motor and, according to the invention, the motor 28 with a variable speed suitable for extraction. Both movements of the rod being made are left to the central unit, and in addition to this cutting stage, the motor 28 can also carry out the remaining movements of the rod 24 in the next and next winding stages.

As far as the winding stage is concerned, the machines currently on the market generally utilize mechanical systems whose spool forming parameters cannot be changed without complex variants. The turns that form the cone are distributed on the spool according to the movement of the rod defined by the contour of the rod (or tube) or "core", and the speed of the spindle varies with the change in the winding radius of the spool and Changes in the speed of the mobile bench should be compensated.

Changes in the speed of the spindles in today's machines are controlled by so-called sectors, often electronically, guided by encoders located in counter rods.
In the present invention, the action of controlling the speed of the spindle during the winding stage can be devoted to the central unit by the detection of the signal of the counter rod position.

According to the invention, by the flexible, computer-dependent actuation of the spindle, bench and rod motion parameters, a spool of any kind and a reasonably suitable shape (conical, cylindrical, etc.) The taper and shape of the multi-layer spool can be easily changed. Based on the re-entry motion law of the movable bench, the height of the cone, the yarn count of the output yarn, the tension of the yarn and the diameter of the spool, according to the system according to the present invention (the increase of the starting point of winding at the time of picking up the spindle is Both the rod displacement law (by adjusting) and the turn distribution during the winding stage can be determined.

According to the invention, the action of the counter rod is still the action of adjusting the tension of the thread and recovering it in case of suspension and cutting. In the solution according to the drawings, the counter rod can be operated in such a way as to limit and / or compensate for torsional deformation. For many variable speed electric motors distributed along the front of the machine to limit torsional deformation and to even out spool formation on the various spindles, it is a desirable solution. In this way, the known drawbacks that can be found in today's machines are reduced or eliminated, and the difference in the degree of tightness of the spool between the starting and ending points of the pick-up of the spindle is also at least partly Will be smaller.

The adjustment of the motor is done by keeping the torque constant, i.e. by continuously adjusting the thread tension during spindle pick-up.

Bench re-entry is shown in the example in the drawing for axis 14 and motor 12
Is achieved by Lightening the bench facilitates its movement and improves the operation of the machine. If a particular yarn quality is required, it is desirable to have the bench (and therefore the winding) reentry speed below a value suitable for maximum production, which is important for control of the mobile bench. On the other hand, it is achieved by appropriately setting a variable speed motor.

With regard to the sub-winding stage at the end of the spindle pick-up, in today's machines one or several electric motors are used for the simultaneous actuation of the rod and the counter rod by a mechanical device, the rod being below the pipe. The counter rod is located at a central height and is used to wind a thread. According to the use of independent actuating means for said two axes by a program operable according to the invention,
The actuating means for shafts 24 and 26 can be driven during the secondary winding phase by recall of a suitable secondary routine.

The advantages of the system according to the invention will be apparent to the person skilled in the art. In particular, the following advantageous features are important.

(1) The flexibility that can be achieved by independent driving of individual shafts with the best thread quality and with fixed working parameters increases the working range that can be achieved by the machine.

(2) Increased productivity due to the great potential of certain steps and the reduced play time for stop, repair, adjustment and setting.

(3) The mechanical parts are maximally simple and lightweight.

(4) Machine monitoring can be performed to get all information on the machine's work (output, count, speed, twist, draft, etc.) and its efficiency.

(5) The overall size is reduced.

(6) Even during operation of the machine, malfunctions are reduced by setting and adjusting data and being able to perform it.

(7) Machine self-diagnosis can be achieved.

(8) In an automated way (by storing working parameters in memory), it is possible to preset working conditions already used for previous lots of similar materials.

(9) A computer capable of controlling the spinning process in production can be arranged in the central unit of the machine.

The drawings only show examples of the invention, which can be varied in shape and arrangement without departing from the scope of the concept underlying the invention.

[Brief description of drawings]

FIG. 1 is a side view showing a conventional technique. FIG. 2 is a plan view of the embodiment of the present invention. Figure 3 shows the second
FIG. 2 is a side view similar to FIG. 1, showing the embodiment of the figure. FIG. 4 is a block diagram. In the drawings, 1 is a structure for a bench 2, 2 is a bench for a spindle 3, 3 is a spindle, 4 is an axis, 5 is a motor, 7 is a structure forming a track 7A, 9 is a carriage structure, and 16 is a structure. A driving device, 18 is a cylinder, 52 is a microprocessor, and S is a pan.

Claims (8)

(57) [Claims] 1. A spindle holding bench (1) for supporting a plurality of spindles (3), and a pan holding bench (9), wherein lobes are taken from a pan (S) supported by said pan holding bench (9). In order to rewind, the pan holding bench (9) for supporting the drum (22) and the lobe feed cylinder device (18) for feeding the lobes are provided, and each bench is relatively movable, Counter rods (2) associated with the rod (24) and the spindle (3)
6) and an operating device for the spindle, the bench, the cylinder device (18), the drum (22), the winding rod (24) and the counter rod (26), The actuating device relatively moves a single peripheral adjustment module (60-70), an independent motor (5) for rotating the spindle (3), a pan holding bench (9) and a spindle holding bench (1). Independent motor (12), independent motor (16) for rotating the cylinder (18), independent motor (28) for driving the winding rod (24), and independent for driving the opposing rod (26). A self-working spinning machine having a central processing unit (52) for controlling the motor (30) and the independent motor (20) for rotating the drum (22). 2. A microprocessor as a central processing unit, with spindle actuation, spindle and / or movable bench actuation, cylinder actuation, lobe feed drum actuation, winding rod actuation, and counter rod. Self-spinning machine according to claim 1, having individual peripheral adjustment modules, with or without a processor, for one or several components provided for the operation of the. 3. A method according to claim 1 or 2 having a position, speed and force transducer which conveys to the microprocessor information regarding the conditions immediately presented to the various members. Self-acting spinning machine. 4. A method as claimed in any one of claims 1 to 3 having means as an optical site or similar type for controlling the compartmental state of the material fed to the cylinder. Self-acting spinning machine. 5. The self-spinning spinning machine according to claim 1, further comprising an operating member including a stepping electric motor and a variable speed electric motor, or any one of them. 6. The automatic spinning machine according to claim 1, wherein the working parameters can be changed even when the machine is in operation. 7. The movement of the pan unwinding drum, the rod and the counter rod is independent, and the movement is independent.
Item 10. The self-action spinning machine according to any one of items. 8. A self-spinning machine as claimed in any one of claims 1 to 7 having a program which can be inserted to carry out different forms of winding cylinders, cones or the like.