KR20010045266A - Pitch reglulation apparatus for wire twister - Google Patents

Abstract

PURPOSE: An apparatus for freely controlling the pitch of a wire twisting machine by adjusting only the volume by driving a drawing drum to work together with a main driving apparatus electrically is provided, which has an effect on simplifying an apparatus and reducing a trouble cause. CONSTITUTION: This apparatus comprises a main motor; a twisting machine body(34); a drawing drum(52) for drawing a twisted line and moving to a winding bobbin; a drawing drum motor(50) for driving the drawing drum by operating together with the main motor electrically; a censor(46) for detecting the driving speed of the main motor and outputting the detected signal to the controlling part of the drawing drum motor; a control volume(VR2) by which the draw drum motor is driven at a speed with a direct proportion to that of the main motor.

Description

Pitch reglulation apparatus for wire twister}

The present invention relates to an improvement in the drawing drum structure of a wire stranding machine, and more particularly, the driving of the drawing wire drum is driven by a motor installed separately from the main driving device of the twisting wire main body. The present invention relates to a pitch adjusting device of a wire strand twister which enables the structure of a twisted pair device to be freely adjusted without permission by simply adjusting the volume by being driven in conjunction with the device.

In general, stranded wires such as steel cords used for reinforcing rubber products such as wire ropes and tires used in various industrial fields are manufactured by twisting steel strands of several strands in a predetermined direction and pitch with each other. The manufacturing apparatus of is largely divided into Bancha type, tubular type, planetary type, skip type and rotating disc type.

The overall structure and twisting process of the twisted pair machine as an example of a rotating disc type stranded machine used for manufacturing a tire steel cord among various types of stranded wires as described above will be described below with reference to FIG. 1.

As shown in the drawing, a conventional twisted pair of wires 6a, which are released from the external wire supply bobbins 1a and 1b of the external feeder 2, are sequentially guided by the guide rollers 13a to 13e and internally supplied. After being transferred to the center lower part of the base 4, it is moved back toward the center of the rotation wheel 4a through the guide roller 13f installed in the upper center part of the inner feed bar 4 via the rotation wheel 4a. Is associated with the internal wire 6b drawn out from the internal wire supply bobbins 3a and 3b.

In this way, the two strands of the external strand 6a and the inner strand 6b are connected to each other by a stranded roller 7 provided at the upper center portion of the inner feeder 4 via the guide roller 13g below the rotary wheel 4a. In the process of conveying) the twist is made in a certain twist direction and twist pitch.

Such twisting of the external element wire 6a and the internal element wire 6b is transmitted to the rotary shaft 15 of the internal feed table 4 through the power transmission belt 14 which is the rotation driving force from the main motor 5 to supply the internal supply. Rotation of the base 4 is made, and the inner and outer element wires 6a and 6b are fed together in an internal supply object during the rotation of the inner feeder 4.

On the other hand, the steel cord 6 conveyed through the stranded roller 7 passes through the two guide rollers 16a and 16b, and the overtwist 8 and the straightener 9 driven by the overtwisted drive motor 17. ) Are sequentially directed toward the withdrawal capstan 12.

At this time, the withdrawal capstan 12 is one end is transmitted through the power transmission belt 18, the reducer 19 and another power transmission belt 20 coupled to the rotary shaft 15 of the internal feed table (4). The steel cord 6 is transported by the rotational driving force of the motor 5.

Next, the steel cord 6 exiting the take-out capstan 12 is finally wound on the winding spool 11 which is rotated by the take-up motor 21 of the take-up machine 10, at which time the take-out capstan 12 On the steel cord feed path between the coil and the winding spool 11, a counter pulley 22 equipped with a sensor for detecting the current length of the steel cord being stranded and a tension adjusting roller 23 for adjusting the tension of the steel cord; The twisted pair work is completed by uniformly winding the winding spool 11 through the traverse 24 reciprocating by the width of the winding spool 11. In the figure, reference numeral 25 denotes a traverse motor.

As described above, in the conventional twisted pair, the rotational driving force of the main motor 5 for driving the rotary wheel 4a is transmitted to the drawing capstan 12 through the power transmission belts 18 and 20 and the reducer 19. It can be seen that the structure takes.

On the other hand, the pitch of the stranded wire drawn out from the twisted pair is determined by the rotational speed of the rotating wheel 4a driven by the main motor 5 and the moving speed of the drawn wire drawn out by the capping rod 12. .

Therefore, in the conventional twisted pair, the pitch control of the stranded wire is performed by changing the diameter of the drawing drum of the drawing capstan 12 or by installing a complicated gearbox separately in the power transmission device to the drawing capstan 12 to replace the drawing drum of the appropriate diameter. Equipped with a gearbox or shifting gearbox.

However, in the conventional mechanical twisted pair pitch control method, the drawout drum change method has to provide various kinds of drawout drums having different diameters, and also requires a lot of effort and time to replace the drawout drum. The disadvantage is that the structure of the gearbox itself is complicated and the shifting operation is difficult.

In addition, the draw-out drum change type or the gear box type has a limit in the range that can be adjusted by the number of drums and the limited number of gear stages, so the problem that the precise pitch adjustment and extensive pitch adjustment is impossible is pointed out. have.

In addition, the drawer capstan of a conventional twisted pair machine is a structure in which power is transmitted from the main motor, and thus requires a separate complicated power transmission device for power transmission between the main motor and the drawer capstan, which makes the apparatus complicated and thus causes trouble. There is also an increased disadvantage.

On the other hand, the mechanical twisted pair pitch adjustment method is not limited to the rotary disc type twisted pair as shown in FIG. 1, but is commonly used in all types of twisted pairs such as tubular, vancha and platinum types. All the problems and disadvantages are common to all these types of twisted pairs.

The present invention has been made to solve the above problems and disadvantages in the mechanical twisted pair pitch control method of the conventional twisted pair, the drive of the wire withdrawal drum by a drive device installed separately from the main drive of the twister main body The pitch of the wire stranding machine which enables the drawing drum to be driven in electrical connection with the main driving device to allow the twisted wire pitch to be freely adjusted without permission by simply adjusting the volume, while simplifying the structure of the twisted pair device. The purpose is to provide a control device.

1 is a schematic structural diagram of a conventional steel cord twisted pair.

Figure 2 is an overall structure diagram of a twister twister pitch adjusting apparatus of an embodiment of the present invention.

FIG. 3 is a partially cutaway side view illustrating the wire extracting device of the apparatus shown in FIG. 2; FIG.

Figure 4 is a circuit diagram of the pitch adjusting device of the twisted pair according to the present invention.

((Description of the code for the main part of the drawing))

30. External Supply 31,32. support fixture

34. Stranded wire Main body 35. Stranded wire outlet

46. Sensor 50. Withdrawal drum motor

52. Withdrawal drum 60. Main motor

61. Outgoing drum motor controller 62. Line

63. F / D Converter 64. Main Motor Control

VR2. Adjustable volume W. Stranded wire

The object of the present invention is a main motor, a twisted wire main body for twisting the strands of several strands while being rotated by the main motor, and withdrawal drum to draw the stranded wire coming out of the twisted wire main body to the winding bobbin and And a drawing drum motor electrically connected to the main motor to drive the drawing drum, and a drawing installed on a line that transmits the speed detection signal of the main motor to the drawing drum motor controller and is driven at a speed proportional to the speed of the main motor. This is achieved by a structure consisting of adjusting volumes that control the speed of the drum motor.

At this time, the main motor driving unit is equipped with a sensor for detecting the driving speed of the main motor and inputs the driving speed of the current main motor detected by the sensor to the drawing drum motor control unit so that the drawing drum is proportional to the driving speed of the main motor. It is configured to rotate.

The twisted pair pitch control in the present invention can be performed in an unauthorized and precise manner through the adjustment of the adjustment volume installed on the line between the main motor speed control sensor and the drawing drum motor control unit.

Details of the above object and technical configuration and the effects thereof according to the present invention will be clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

First, FIG. 2 is an overall structural diagram of an apparatus for adjusting twisted strand twister according to an embodiment of the present invention, and FIG. 3 is a partially cutaway side view illustrating the wire drawing device of the apparatus shown in FIG.

The illustrated twisted pair is a type of stranded twister in its kind, the overall structure of which is an external feeder 30 for supplying an external supply element W1, and a pair of inlet side supports 31 which are installed at regular intervals from each other. And the stranded wire main body 34 installed between the support side and the support side 32, and the plurality of elementary wire supply bobbins 33 rotatably installed therein, and the stranded wire that has passed through the stranded wire main body. (W) is composed of a twisted pair lead-out portion 35 to allow continuous movement toward the take-up bobbin (not shown).

The external wire supply bobbin 36 is mounted on the external supply table 30 so that the external supply wire W1 released from the external supply wire 30 is directed to the twisted pair main body 34 via the tension control device 37.

On the other hand, the pull-in support 31 and the pull-out support 32 are driven pulleys 38, 39 and driven pulleys 40 and 41, respectively, which are rotated by receiving power from a main motor (not shown). And belts 42 and 43 and chains provided therebetween.

In addition, an introduction guide 44 and an extraction guide 45 for guiding the introduction of the wire W1 and the extraction of the stranded wire W are formed at the center of each of the driven pulleys 40 and 41, respectively.

In addition, a proximity sensor 46 which detects the rotational speed of the main motor in a non-contact manner is provided at a point close to the driving pulley 39 or the motor shaft of the lead-out support 32, while the upper end of the lead-out support is provided. An over twist 47 for attaching tension to the stranded wire W is provided.

On the other hand, the twisted pair main body 34 rotatably installed between the two support (31, 32) is provided with a bobbin mounting cradle in the interior surrounded by the cover 48, the element wire on the cradle

The supply bobbin 33 is seated to supply the element wire (\ 2), and the element wire thus supplied forms a twist in association with the external supply element wire W1 at an alliance point in the twisted pair main body 34.

Next, the stranded wire lead-out part 35 is provided with a drawing drum motor 50 at one lower side of the support bar 49 vertically erect from the ground, and the guide drum 51 and the drawing drum at the lower part of the support bar 49. 52 is installed up and down and the belt 53 is connected between the drawing drum motor 50 and the drawing drum 52 so that the rotation driving force of the drawing drum motor 50 is drawn out through the belt 53. It is comprised so that it may be transmitted to the drum 52.

In addition, the upper part of the support section 49 is provided with the braces 54, 54 'of a configuration in which a plurality of rollers are arranged alternately, and again above the balance weight 55 and the central axis 56 and A dancer device 58 composed of a dancer roller 57 is mounted, and a guide roller 59 is installed at the upper end of the support.

The path of the stranded wire W in the twisted wire lead-out part 35 having such a structure is wound around the lower drawer drum 52 through the guide drum 51 and then passes through the upper straight braces 54 and 54 '. After that, the movement path toward the winding bobbin (not shown) is taken through the dancer roller 57 and the guide roller 59 on the upper portion thereof.

Looking at the twisted pair process and pitch adjustment process in the twisted pair according to the present invention having such a structure with reference to Figures 2 to 4 as follows.

First, the twisted pair process is performed in parallel with the rotation of the twisted pair main body 34 by the driving of the main motor while the external supply element W1 is supplied from the external supply table 30 as in the twisted pair method in a conventional twisted pair. The element wires W2 supplied from the element wire bobbins 33 seated therein are twisted in association with the external element wires W1, and the twisted wires W having such twists are subjected to the over twist 47. While facing the tension is directed to the stranded wire lead-out portion (35).

Meanwhile, as shown in the circuit diagram of FIG. 4, when the main motor 60 is driven, the drawing drum motor 50 installed in the stranded wire drawing part 35 is also driven in conjunction with the main motor 60. In this case, the main motor 60 is driven. Drive speed is detected by the sensor 46 installed at a position close to the drive pulley 46 and transmitted to the drawing drum motor controller 61 to serve as a driving control signal of the drawing drum motor 50.

F / D for converting the main motor rotational speed (RPM) detected from the sensor 46 into a signal of 0 to 10 Volts on a line 62 connected to the drawing drum motor control unit 61 from the sensor 46. The converter 63 is installed, and the adjusting volume VR2 is installed between the F / D converter and the drawing drum motor control unit 61 to draw the drawing drum motor at a speed proportional to the driving speed of the main motor 60. 50) is made to rotate.

At this time, it is preferable that the drawing drum motor 50 can accurately transmit the rotation speed (RPM) of the main motor by using a synchronous motor.

In addition, the main motor control unit 64 and the drawing drum motor control unit 61 are connected to each other by the DC partial line 65 so that the main motor unit and the drawing drum unit can be continuously maintained even when the power is cut off during a power failure. It is preferable.

In the present invention, the twisted pair of twisted pairs of pitch control is made simply by adjusting the adjustment volume (VR2), it is possible to adjust precisely to the desired pitch.

In the above description, the twisted-pitch adjusting device of the present invention has been described by taking a rotating disk-type stranded wire as an example, and the present invention is not only a rotating disk-type stranded twister but also a part including a vancha type, a tubular type, and a planetary type. It can be used to be applied to the stranded wire of the kind, of course, also in the type of stranded wire rope or rubber reinforcing steel cord for the production of a variety of stranded wire including rubber reinforcement will be possible.

As described above, in the pitch adjusting device of the wire twisted pair according to the present invention, the driving of the drawing drum is made by a separate motor rather than a method of receiving power from the main motor, and the driving of the drawing drum motor is performed by the main motor. Since it is made in electrical connection with the motor, the pitch can be easily adjusted only by adjusting the adjusting volume when adjusting the pitch of the twisted pair, and thus, a remarkable effect is distinguished from the mechanical pitch adjusting apparatus of the conventional twisted pair.

In particular, the pitch adjustment in the present invention is made by adjusting the adjustment volume, there is an advantage that can be performed in a wide range and precisely stepless when adjusting the pitch.

In addition, in the twisted pair of the present invention, since the driving of the drawing drum is performed by a separate driving motor, a complicated power transmission unit for transferring the power of the main motor to the drawing drum as in the conventional twisted pair is excluded, thereby simplifying and failure of the apparatus. There is an effect that can reduce the factor.

Claims (3)

A main motor, a twisted pair main body which allows the strands of several strands to be twisted together while being rotated by the main motor, a drawing drum which draws the twisted pair coming out of the twisted pair main body and moves toward the winding bobbin, and the main motor A draw-out drum motor electrically connected to drive the draw-out drum, a proximity sensor detecting the drive speed of the main motor and outputting the detection signal to the draw-out drum motor control unit, and a line on the line connecting the sensor and the draw-out drum motor control unit It is installed on the pitch adjusting device of the twisted wire twister, characterized in that made of the adjusting volume to drive the drawing drum motor at a speed proportional to the speed of the main motor. The pitch adjusting device of a wire twisted pair device according to claim 1, wherein an F / D converter is installed on a line between the sensor and the drawing drum motor control unit to convert the main motor rotational speed detected from the sensor into a voltage. According to claim 1, wherein the drawing drum motor pitch adjusting device of the wire twisted pair, characterized in that the synchronous motor.