KR101014126B1 - Auto tension control system - Google Patents

Abstract

The present invention is installed a plurality of predetermined laser sensors spaced apart by a predetermined distance in the upper space of the inlet of the needle punching machine into which the fabric is introduced, the laser sensor is fixed to the outer side of the punching machine body using a support bracket, each laser attached The sensor provides the information in connection with the PLC controller, and based on the obtained information, the sensor inputs the required value directly on the GUI board so that the respective incoming rollers formed inside the punching machine body can rotate at an appropriate speed. There is this.

Needle punching machine

Description

Automatic tension control system for nonwoven fabric fabrics {Auto tension control system}

The present invention relates to a device for adjusting the tension of the fiber fabric supplied to the needle punching device, more specifically, a predetermined laser sensor in real time to detect the tension of the fabric continuously supplied to a plurality of needle punching machine When the fabric is less than or exceeds the reference distance based on the value, by varying the inlet roller speed of each needle punching machine to configure the deflection of the fabric can be automatically adjusted by maintaining the most ideal tension The present invention relates to a tension control automation apparatus for fabric manufacturing a nonwoven fabric which can be supplied to each needle punching machine.

In general, when supplying the fiber fabric to the automatic production line for mechanical weaving, it is necessary to maintain a constant tension so that the supply state of the fabric can proceed correctly, real-time monitoring is required for this tension adjustment.

Briefly referring to the configuration of a conventional needle punching machine for a more accurate understanding of the present invention.

The needle punching machine is a drive cam which is connected to a predetermined actuator to drive; A main drive operating according to the operation of the drive cam; A needle device operatively provided at an end of the main drive, the needle device including a needle beam, a needle board mounted on the needle beam, and a plurality of needles integrally provided on the needle board. It is composed. In addition, the lower portion of the needle device is provided with a strip plate and a bed plate to maintain a constant distance from the strip plate, the inlet rollers for each plate end portion is provided with a feed roller for supplying the nonwoven fabric forming material, while each plate end The discharge outlet is provided with a discharge roller for discharging the finished nonwoven fabric. Of course, as the feed conveyor or feed table is installed on the inlet roller side to automatically supply the prepared nonwoven fabric forming material, the main fabric is fed by the drive cam and the main fabric is fed between the strip plate and the bed plate. When activated, a plurality of needles provided on the needle board of the needle device mounted at the end of the main drive is to perform a vertical reciprocating motion with respect to the base fabric. As the valve formed on the needle penetrates into the fabric by the continuous repetitive movement of the needle, the fibers are entangled, thereby producing a nonwoven fabric having a basic strength of felt.

In order to achieve the desired purpose, in the same configuration as the present invention, a plurality of the above-mentioned needle punching machines are disposed. In this case, as the fabric is continuously transferred, the tension acts intensively in any part, and thus The roller may bend or the fabric may be deformed. In other words, if the upper roller is driven by power and the fabric is twisted or mistransmitted at any one point, a lot of loads are momentarily acted, but it is not possible to control only a specific part where the load acts. It was pointed out that it was very difficult to adjust the tension so that any part was loosened during transportation, as well as the fabric was often stretched.

In general, when the inlet roller speed of each needle punching machine becomes unsuitable for the roller speed of the other needle punching machine, the repeatedly fed fiber fabric frequently results in sagging or tension in the space between the needle punching machine and the needle punching machine. If the fabric sags in the space, the fabric will be dragged to the floor, which may lead to contamination and, as a result, it will not be possible to perform all the processing smoothly in the processing process. In addition, there is a risk that the sagging fabric may come into contact with other moving parts, resulting in the failure of the parts along with the risk of contamination or damage to the fabric. On the other hand, when the conveying speed of the fabric discharged from the needle punching machine does not reach the speed input to the needle punching machine of the next step, the fabric is inversely tightened, in this case, the external pressure that the fabric made of microfiber acts on both sides It is easily stretched by, and can be torn in case of overwork.

In addition, if the machine is inevitably stopped during operation or stops operation of the needle punching machine after lunch or after work, the needle punching machine does not stop at the same time even if collective control is performed. As it stops, the fabric supplied to each punching machine is also stopped at different moments. In this case, the fabrics are placed in different situations (sag or taut), and when the equipment is operated again later, the above-mentioned problems are faced again.

Conventionally, as a way to solve such a problem, the operator always keeps an eye on the feed roller of each needle punching machine to adjust the feed speed of the fabric according to the situation, and recently, a mechanical continuously variable transmission (PIV) is installed to feed the fiber The tension of the fabric can be adjusted, but this also requires manual operation whenever necessary, and if it is used for a long time, mutual wear occurs due to mechanical abrasion, making it difficult to maintain uniform tension, and the difference in feeding speed in each step And different tensions are provided, eventually exposing the problem of deterioration in quality.

The present invention has been made in order to actively solve the above problems, to maintain the tension degree of the fiber fabric that is repeatedly automatically transferred to a plurality of needle punching machine in the most ideal state, and also the conveying speed of the fabric conveyed to each needle punching machine It is an object of the present invention to provide an automatic tension control device for fabrics for manufacturing nonwoven fabrics configured to be driven more precisely and precisely by adjusting to match the set value.

In order to achieve the above object, in the present invention, a plurality of laser sensors are spaced apart by a predetermined distance from the upper space of the inlet of the needle punching machine into which the raw material is introduced, but the plurality of laser sensors are disposed outside the main body of the punching machine using a support bracket. The fixed and attached laser sensors provide information in connection with the PLC controller, and based on the obtained information, each incoming roller formed inside the punching machine body by directly inputting the required value on the GUI board at an appropriate speed. It is characterized by the configuration to be able to rotate.

According to the present invention implemented in the above manner, it is possible to designate each punching machine step by step and independently to enable the shifting operation of the inlet roller corresponding to the automated system free from the conventional method that was performed manually by hand. It is effective to prevent the fabric from being transferred from the punching machine to the punching machine so as not to sag or become taut. In addition, the smoother and more regular supply of fabric can prevent processing defects, perfect quality inspection, and improve work efficiency.

The present invention relates to a device for adjusting the tension of the fiber fabric fed to the needle punching machine, a predetermined laser sensor detects the tension of the fabric continuously supplied to a plurality of needle punching machine in real time and the reference distance based on the initial setting value When the fabric is less than or exceeds the fabric, the needle rollers of the needle punching machine are varied so that the degree of deflection of the fabric can be adjusted automatically. It relates to a tension control automation device of the fabric for manufacturing non-woven fabric that can be supplied.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.

1 is an exemplary view showing the configuration of an automatic production line implemented with a plurality of needle punching machine in accordance with the present invention, Figure 2 is a schematic view showing in detail the partial punching machine configured by a preferred embodiment of the present invention, Figure 3 FIG. 4 is a schematic view showing in detail an extract of another needle punching machine configured according to a preferred embodiment of the present invention, and FIG. 4 is an exemplary view showing a control system in which the tension control automation device of the present invention can be implemented.

The present invention is characterized in that a plurality of needle punching machine (A, B) as shown in Figure 1 is configured by attaching a predetermined laser sensor 10 to the device device for building an automatic production line.

The laser sensor 10 is configured in conjunction with the PLC controller (H) to recognize the specified distance according to the input data, the initial input data, the set value, the correction value of each punching machine as shown in FIG. It utilizes the usual GUI (K) method of exchanging information with a computer via graphics. The laser sensor 10 is preferably disposed so as to detect the fabric 70 moving in one direction from the upper side by fixing the support bracket 20 to the outer space of each punching machine body (A, B). .

A sensor unit for implementing the laser sensor 10; A controller unit; Actuator; can be classified broadly, in the present invention, the laser sensor 10 corresponding to the sensor unit; A PLC controller H corresponding to the controller unit; Inlet roller (30, 30 ') corresponding to the operating portion; was configured to achieve the desired purpose. For reference, in the present invention, it will be apparent that a wavelength sensor, an ultrasonic sensor, or the like may be sufficiently achieved in place of the above-described laser sensor as a means for determining the degree of deflection of the fabric.

Meanwhile, reference numeral A of FIG. 1 illustrates a configuration of the needle punching machine A for punching the incoming fabric 70 from the upper side to the lower side, and the inlet rollers 30 and 30 formed in the inlet of the first punching machine body. The fabric is supplied through '), and the supplied fabric 70 passes through the upper stripper (not shown) to the discharge rollers 40 and 40' at a constant speed. 2 is shown in detail.

Referring to the needle punching machine (A) of FIG. 2 in detail, as described above, the cam 51 which is linked to the belt by the motor 50 is driven, thereby acting on both cylinders (52, 52 ') A plurality of needles (Niddle) formed in the needle board (53) by reciprocating the needle beam vertically to move the reciprocating to the needle through hole (not shown) between the upper stripper is a punching operation is made. In other words, the fabric moving at a constant speed inside the punching machine is processed by a plurality of needles punched from the top to the bottom.

On the other hand, the needle punching machine of FIG. 3 shows the reference B of FIG. 1 in detail. As described above, the A punching machine and the overall configuration is the same, except that the fabric 70 is directed from the bottom to the discharge rollers 40 and 40 'through the inlet rollers 30 and 30' by placing the stripper on the lower side. Punch.

The PLC controller (H) replaces the functions of the relay, timer, counter, and the like in the control panel with semiconductor devices such as ICs and transistors, and adds arithmetic functions to the basic sequence control functions to enable program control. Although not shown separately in the drawing, the general control device is configured to have a microprocessor and a memory, and the central processing unit (CPU) that acts as a human brain and connects signals to and from external devices. It is generally composed of an output unit, a power supply unit for supplying power to each unit, and a peripheral device for writing a program to a memory in the PLC. When the PLC program is applied to the automation line in particular, since the operation of the machine is frequently modified and the control form is changed due to the change of the line or the change of the device many times, it is not only convenient to modify it at that time but also the durability and stability are excellent. Ideal for automation lines requiring motion control.

Hereinafter, looking at the operation of the present invention and the effects caused by the preferred embodiment as follows.

In the present invention, a plurality of predetermined laser sensors 10 are spaced apart by a predetermined distance from the upper spaces of the inlet openings of the needle punchers A and B into which the fabric 70 is introduced, but the laser sensor supports the support bracket 20. The laser sensor is fixedly attached to the outside of the main body of punching machine (A, B), and each attached laser sensor provides information in connection with PLC controller (H), and based on the obtained information, the required value is directly displayed on GUI board (K). Each of the inlet rollers 30 and 30 'formed inside the main body of the punching machine by input is configured to rotate at an appropriate speed.

In the present invention, a plurality of punching machines (A, B) having different up and down weaving directions can be provided and arranged in various ways. For example, as shown in Figure 1 by using a punching machine (A) for punching a plurality of fabrics laminated in the first several layers from the top of the fabric to the bottom, and then discharge roller (40, 40 ') Through the output, the output fabric is fed into the main body through the inlet roller (30, 30 ') of the next punching machine (B) and this time the process of weaving by punching from the bottom of the fabric upward. The process may be performed in three cycles as shown in the drawing, and the fabric 70, which has completed all of these punching processes, enters the heat shrinker C and uses the heat supplied to the inside of the shrinker. The density between particles is further improved. Thereafter, the work is finished by winding the finished fabric through the winder (D) of FIG. 1. Here, repeatedly punching alternately a plurality of punching machines having different up and down weaving directions as described above is to further increase the completeness of the fabric.

Meanwhile, before the fabric 70 exits the A punching machine and enters the B punching machine, and also before the fabric 70 exits the B punching machine and enters the A punching machine, the fabrics are formed by their own weight and gravity as shown in FIG. 1. Slightly down the bar, the degree of fabric sag at this time can be accurately understood without any error, as well as the support bracket 20 on the outside of each punching machine body so that the operator can artificially adjust the degree of sagging of the fabric The tightly fixed laser sensor 10 is further configured.

Referring to FIGS. 2 and 3, the operation of the laser sensor 10 will be described in detail. When the fabric is larger (sags down) or becomes smaller (distinct) than the distance R starting from the reference distance R, the laser sensor 10 Detects immediately and transmits the information to the PLC controller (H), if the operator inputs the correction speed of the inlet rollers 30, 30 'corresponding to each punching machine on the GUI board (K), This input value is transmitted back to the punching machine body to change the speed of the inlet roller to easily adjust the tension of the sagging or stretched fabric.

[Example 1-Initial Setting Value Input Step]

First, the distance from the laser sensor 10 attached to the outside of the needle punching machines A and B main body to the lower far end is measured, and the most ideal reference distance R is input on the GUI board K.

In the embodiment of the present invention, the reference distance R is set to 0.8 m (error range is set to ± 0.1 m), and the initial speeds of the inlet rollers 30 and 30 'of each needle punching machine are set to 0.05 m / s. .

[Example 2-Sensor detection and information transmission step]

As shown in FIG. 1, when the fabric 70 traveling in the space between the punching machine and the punching machine sags or squeezes at a certain portion to deviate within an error range of the reference distance R, the information and the error position are transmitted to the PLC controller H in real time. The operator recognizes this and inputs the corrected roller speed of the punching machine based on the transmitted information.

In the exemplary embodiment of the present invention, as the fabric is smaller than the reference distance R (0.8 m), and the risk of tearing or stretching is detected, the inlet roller speed of the punching machine is set to 0.04 m / s, respectively.

Example 3-Operating Steps

The corrected value is transmitted to each punching machine body again, and the inlet rollers 30 and 30 'are connected to each motor 60 and 60' by a belt according to the command of the PLC controller H based on the secured information. The speed of the conversion is able to freely adjust the feed rate of the fabric (70).

In the embodiment of the present invention, it was confirmed that the fabric is stabilized to the reference distance R as the feed roller correction speed is decreased to reduce the moving speed of the taut fabric.

As described above, in the present invention, a predetermined laser sensor is configured to appropriately adjust the rotational speed of the induction rollers formed on each needle punching machine, and a comprehensive control means receives a necessary data condition and outputs a suitable output using the same. It utilizes the PLC controller, which makes it possible to transfer the fabric smoothly with even tension in the fabric transfer, and also to make the textile fabric automatically supplied more firmly.

The present invention described so far is only an example for explaining this in detail based on an embodiment, and the scope of the present invention is not limited by the accompanying drawings or the description with reference to the drawings.

1 is an exemplary configuration of an automatic production line implemented with a plurality of needle punching machine according to the present invention.

Figure 2 is a schematic diagram showing in detail the extract portion of the needle punching machine configured according to an embodiment of the present invention.

Figure 3 is a schematic view showing in detail the partial extraction of another needle punching machine configured according to an embodiment of the present invention.

Figure 4 is an illustration showing a control system in which the tension control automation device of the present invention can be implemented.

* Description of the symbols for the main parts of the drawings *

10. Laser sensor 20. Support bracket

30,30 '. Inlet roller 40,40 '. Discharge roller

50. Motor 51. Cam

52,52 '. Cylinder 53. Needle Board

60,60 '. Motor 70.fabric

A, B. Needle Punching Machine R. Reference Distance

C. Heat Shrink

D. Winder

H. PLC controller

K. GUI board

Claims (4)

In the device configured so that the needle punching machine main body is arranged at appropriate intervals so that the fabric can be continuously punched through the inside of the main body, A plurality of laser sensors, each of which is installed by using a support bracket, spaced apart by a predetermined distance from an upper side of the fabric inlet of each of the needle punching machine bodies; A PLC controller associated with the laser sensor to receive the information of the needle punching machine detected by the laser sensor; A GUI board for directly inputting a required value for increasing or decreasing the rotation speed of each drawing roller formed on the inner side of the punching machine body based on the obtained information; Tension control automation device of the fabric for manufacturing nonwoven fabrics characterized in that consisting of. The method according to claim 1, The laser sensor detects the distance to the fabric moving in the punching machine in real time, and when the fabric falls short of the reference distance R based on the initial setting value, the laser sensor immediately transmits this information to the PLC controller, and the operator's correction value. A tension control automation device for fabrics for manufacturing nonwoven fabrics, characterized in that the tension of the inlet roller of the needle punching machine is reduced by the input of the PLC controller by the input so as to sag downwards in the downward direction. The method according to claim 1, The laser sensor detects the distance to the fabric moving in the punching machine in real time and when the fabric exceeds the reference distance R based on the initial setting value, the laser sensor immediately transmits this information to the PLC controller, and the operator's correction value. A tension control automation device for fabrics for manufacturing nonwoven fabrics, which is configured to reduce the deflection of the fabric by accelerating the rotation speed of the needle roller of the needle punching machine by the command of the PLC controller by the input. The method according to claim 1, Tension control automation device for fabrics for manufacturing non-woven fabrics, characterized in that configured to be able to independently control the rotational speed of the inlet roller formed in each of a plurality of needle punching machine by the command by the correction speed input of the PLC controller.

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