TWI472763B - Yarn detecting device - Google Patents

Description

Yarn detecting device

The present invention relates to a yarn detecting device, and more particularly to a yarn detecting device for a jet loom table.

Glass fiber is a kind of inorganic non-metallic material with excellent performance. It has many advantages, such as good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. Glass fiber is made by glass ball or waste glass as high-temperature melting, drawing, winding, weaving and other processes. The diameter of the monofilament is several micrometers to twenty micrometers. Silk is composed of hundreds or even thousands of monofilaments. Glass fibers are commonly used as reinforcing materials in composite materials or in various fields such as electrical insulating materials, thermal insulation materials, and circuit boards.

Because glass fiber has the disadvantages of brittleness and poor wear resistance, and its application field requires extremely high yield of glass fiber woven fabric, how to efficiently detect glass fiber yarn before the process of jet woven fabric The quality has become an important issue.

It is therefore an object of the present invention to provide a yarn detecting device for detecting the quality of a yarn in advance.

According to an embodiment of the invention, a yarn detecting device for detecting a yarn is provided, comprising a base, a sensor disposed on the base, an automatic tension control guide wheel, an automatic shake control guide wheel, a control unit, and a display. Components and Self-cleaning components. The sensor detects the tension value and the amount of drift of the yarn, and detects whether the yarn has hairy fibers. The automatic tension control guide wheel transmits the yarn, wherein the automatic tension control guide wheel moves slightly relative to the base according to the tension value of the sensor feedback to adjust the tension of the yarn. The automatic dither control guide wheel transmits the yarn, wherein the automatic dither control guide wheel moves slightly relative to the base according to the amount of drift of the sensor feedback to adjust the jitter amplitude of the yarn. The self-cleaning component is disposed on the base to clean the sensor. The display element is connected to the sensor to display the detection result of the yarn. The control unit is connected to the sensor, automatic tension control guide wheel, automatic shake control guide wheel and self-cleaning components.

In one or more embodiments of the invention, the sensor includes a transmitting end and a receiving end, and a sensing section is defined between the transmitting end and the receiving end, and the yarn passes through the sensing section.

In one or more embodiments of the invention, the self-cleaning element is disposed in the corresponding sensing segment.

In one or more embodiments of the invention, the sensor is a laser sensor.

In one or more embodiments of the invention, the self-cleaning element is a sensor cleaning fan.

In one or more embodiments of the present invention, the yarn detecting device further includes a transmission mechanism that connects the automatic tension control guide wheel to the base.

In one or more embodiments of the present invention, the yarn detecting device further includes a transmission mechanism that connects the automatic shake control guide wheel to the base.

In one or more embodiments of the invention, the transmission mechanism includes a gear and a rack.

In one or more embodiments of the invention, the transmission mechanism includes a screw and a spring.

In one or more embodiments of the present invention, the yarn detecting device further includes a turning guide wheel, and the turning guide wheel is disposed on the base to change the traveling direction of the yarn.

The yarn detecting device of the present invention can be applied to a jet loom table for pre-detecting the quality of the yarn entering the yarn accumulator. Since the yarn detecting device uses a highly accurate laser sensor, the yarn detecting device can be applied to detect a yarn running at a high speed, and the yarn can travel at a speed of 580 to 1200 m/min. In addition, the tension value and the drift amount detected and fed back to the control unit through the sensor enable the automatic tension control guide wheel and the automatic shake control guide wheel to fine-tune the position thereof to change the automatic tension control guide wheel and The automatic dithering controls the contact angle between the guide wheel and the yarn, so that the running yarn maintains a stable tension and controls the amplitude of the shake. The yarn detecting device further removes the dust falling on the sensor by the self-cleaning component to maintain the sensitivity of the sensor.

The spirit and scope of the present invention will be apparent from the following description of the preferred embodiments of the invention. The spirit and scope of the invention are not departed.

Referring to Fig. 1, there is shown a schematic view of an embodiment of the yarn detecting device of the present invention. The yarn detecting device 100 is for detecting the quality of the yarn 200 to detect whether or not the hairpin fibers are present in the yarn 200. If too many hairpin fibers are detected, it is determined that the yarn 200 does not conform to the specifications and cannot be used.

The yarn detecting device 100 includes a base 110, a sensor 120, and at least An automatic tension control guide wheel 130, at least one automatic shake control guide wheel 140, a self-cleaning element 150, a display element 160, and a control unit 170. The yarn detecting device 100 can automatically adjust the state of the yarn 200 during conveyance by the automatic tension control guide wheel 130 and the automatic shake control guide wheel 140, so that the tension of the yarn 200 is controlled to an optimum state, and the yarn is controlled. The jitter amplitude of 200 is controlled to a minimum. In addition, if the signal detected by the sensor 120 becomes weak, the dust on the sensor 120 can be removed by starting the self-cleaning component 150 to maintain the recognition capability of the sensor 120.

The base 110 is mounted to a jet loom table for pre-detecting the quality of the yarn 200 entering the jet loom table. The base 110 may be disposed at a weft end of the jet loom table, and the yarn 200 is conveyed by the automatic tension control guide 130 and the automatic shake control guide 140, and after passing the detection by the yarn detecting device 100, enters The yarn accumulator is used by the jet loom. The yarn 200 can be, for example, a glass fiber yarn.

The material of the susceptor 110 may be an aluminum alloy. The design of the length and area of the base 110 is preferably synchronized with the jet loom to reduce the effects of the vibration of the jet loom on the yarn detecting device 100.

The sensor 120 is disposed on the base 110. The sensor 120 includes a transmitting end 122 and a receiving end 124. The transmitting end 122 and the receiving end 124 jointly define a sensing section, and the yarn 200 is a sensing section between the transmitting end 122 and the receiving end 124. The sensor 120 is caused to detect the state of the yarn 200. The sensor 120 can be a laser sensor, which has higher precision and accuracy than a general LED sensor. The transmitting end 122 includes at least a laser light emitter, and the receiving end 124 includes at least a sensing lens.

The sensor 120 is configured to detect the tension value of the yarn 200, and the sensor 120 The detected tension value is returned to the control unit 170, so that the control unit 170 adjusts the position of the automatic tension control guide wheel 130 according to the tension value returned by the sensor 120, so that the automatic tension control guide wheel 130 is transmitting the yarn. During the process of the line 200, the tension of the yarn 200 during transport can be controlled based on the value of the tension returned by the sensor 120.

The yarn detecting device 100 further includes a transmission mechanism connecting the automatic tension control guide wheel 130 and the base 110. The transmission mechanism may include a screw 190 and a spring 192 sleeved on the screw 190. The automatic tension control guide wheel 130 is fixed to the screw 190. At one end, the screw 190 can be moved slightly relative to the base 110, and the spring 192 is used to provide a certain elastic force of the automatic tension control guide wheel 130.

The sensor 120 is further configured to detect the amount of drift of the yarn 200. The amount of drift here refers to the deviation of the center axis from the vibration of the yarn 200 that is difficult to avoid due to the rotation of the bobbin or the pulling of the guide wheel during the conveying process. The amount of displacement. The amount of drift of the yarn 200 detected by the sensor 120 is returned to the control unit 170, so that the control unit 170 adjusts the position of the automatic shake control guide wheel 140 according to the amount of drift returned by the sensor 120, so that During the process of conveying the yarn 200, the automatic jitter control guide wheel 140 can adjust the amplitude of the vibration of the yarn 200 during the transmission according to the amount of drift returned by the sensor 120, so that the amplitude of the vibration of the yarn 200 is controlled to a certain extent. Within the scope.

The yarn detecting device 100 further includes a transmission mechanism connecting the automatic shake control guide wheel 140 and the base 110. The transmission mechanism may include a gear 194 and a rack 196. The gear 194 is disposed on the base 110, and the automatic shake control guide wheel 140 is fixed. On the rack 196, the rack 196 is coupled to the gear 194, and the rack 196 is rotated by the rotation of the gear 194 to adjust the automatic dither control guide. The position of the wheel 140.

The sensor 120 is further configured to detect whether the yarn 200 has hair-like fibers, and the signal detected by the sensor 120 is transmitted to the display element 160 for display. The detection results of the yarn 200 are as shown in Figs. 2A and 2B, in which the vertical axis represents the signal intensity and the horizontal axis represents time. If the quality of the yarn 200 is good, the result of the test will be a smooth straight line, as shown in Figure 2B. In contrast, if the quality of the yarn 200 is not good, the detection result will be as shown in Fig. 2A, and many noises appear. Each of the noises represents the detection of hairy fibers, and if a plurality of hairiness are found for a period of time. If the fiber is used, the roll yarn 200 will be judged to be defective and cannot be used continuously.

In order to fix a plurality of single yarns in the manufacturing process, the surface of the yarn 200 is subjected to sizing treatment. Therefore, during the conveyance of the yarn 200, a lot of dust is easily generated due to friction with the guide rollers, and such dust is generated. If it falls on the sensor 120, especially at the laser light emitting end of the transmitting end 122 or the lens of the receiving end 124, the accuracy of the sensor 120 will be affected. The yarn detecting device 100 can remove the dust on the sensor 120 by the self-cleaning element 150 to maintain the accuracy of the sensor 120.

The self-cleaning element 150 can be a sensor cleaning fan. When the signal strength detected by the sensor 120 and transmitted to the control unit 170 is weak, it indicates that excessive dust is accumulated on the sensor 120, and the control unit 170 can issue a signal to activate the self-cleaning component 150. To remove dust on the sensor 120. The position of the self-cleaning element 150 is disposed near the sensor 120, for example, above the sensor 120. The self-cleaning element 150 in this embodiment is located above the sensor 120 and corresponds to the sensing section.

The yarn detecting device 100 further includes a turning guide wheel 180, and the turning guide wheel 180 is disposed on the base 110 for changing the direction of travel of the yarn 200 such that the finished yarn 200 can enter the yarn accumulator for use by the jet loom.

The yarn detecting device 100 of the present invention can be applied to a jet loom table for pre-detecting the quality of the yarn 200 entering the yarn accumulator. Since the yarn detecting device 100 uses the laser sensor 120 with higher accuracy, the yarn detecting device 100 can be adapted to detect the yarn 200 running at a high speed, and the traveling speed of the yarn 200 can be as high as 580 to 1200. Ruler / minute. In addition, the tension value and the drift amount detected and fed back to the control unit 170 through the sensor 120 cause the automatic tension control guide wheel 130 and the automatic shake control guide wheel 140 to move and fine-tune the position thereof to change the automatic tension. The contact angle between the control guide wheel 130 and the automatic dither control guide wheel 140 and the yarn 200 is such that the running yarn 200 maintains a stable tension and controls its amplitude of jitter. The yarn detecting device 100 further removes the dust falling on the sensor 120 by the self-cleaning component 150 to maintain the sensitivity of the sensor 120.

Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Yarn detection device

110‧‧‧Base

120‧‧‧ sensor

122‧‧‧transmitter

124‧‧‧ Receiver

130‧‧‧Automatic tension control guide wheel

140‧‧‧Automatic Jitter Control Guide Wheel

150‧‧‧Self-cleaning components

160‧‧‧Display components

170‧‧‧Control unit

180‧‧‧ turn guide wheel

190‧‧‧ screw

192‧‧ ‧ spring

194‧‧‧ Gears

196‧‧‧ rack

200‧‧‧ yarn

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; Figure.

2A and 2B are respectively the detection results of the yarn detecting device of the present invention for detecting different yarns.

100‧‧‧Yarn detection device

110‧‧‧Base

120‧‧‧ sensor

122‧‧‧transmitter

124‧‧‧ Receiver

130‧‧‧Automatic tension control guide wheel

140‧‧‧Automatic Jitter Control Guide Wheel

150‧‧‧Self-cleaning components

160‧‧‧Display components

170‧‧‧Control unit

180‧‧‧ turn guide wheel

190‧‧‧ screw

192‧‧ ‧ spring

194‧‧‧ Gears

196‧‧‧ rack

200‧‧‧ yarn

Claims (10)

A yarn detecting device for detecting a yarn, comprising: a base; a sensor disposed on the base, the sensor detecting a tension value and a drift amount of the yarn, and Detecting whether the yarn has hair-like fibers; at least one automatic tension control guide wheel for conveying the yarn, wherein the automatic tension control guide wheel moves slightly relative to the base according to the tension value fed back by the sensor Controlling the tension of the yarn; at least one automatic shake control guide wheel to transmit the yarn, wherein the automatic shake control guide wheel moves slightly relative to the base according to the amount of drift of the sensor feedback Controlling the jitter amplitude of the yarn; a self-cleaning component disposed on the base for cleaning the sensor; a display component coupled to the sensor to display the detection result of the yarn; and a control unit And connecting the sensor, the automatic tension control guide wheel, the automatic shake control guide wheel and the self-cleaning component. The yarn detecting device of claim 1, wherein the sensor comprises a transmitting end and a receiving end, and a sensing section is defined between the transmitting end and the receiving end, and the yarn passes the feeling Measuring segment. The yarn detecting device of claim 2, wherein the self-cleaning member is disposed in a corresponding sensing segment. The yarn detecting device of claim 1, wherein the sensor is a laser sensor. The yarn detecting device of claim 1, wherein the self-cleaning component is a sensor cleaning fan. The yarn detecting device of claim 1, further comprising a transmission mechanism connecting the automatic tension control guide wheel and the base. The yarn detecting device of claim 1, further comprising a transmission mechanism connecting the automatic shake control guide wheel and the base. The yarn detecting device of claim 7, wherein the transmission mechanism comprises a gear and a rack. The yarn detecting device of claim 6, wherein the transmission mechanism comprises a screw and a spring. The yarn detecting device according to claim 1, further comprising a turning guide wheel disposed on the base to change a traveling direction of the yarn.