阅读说明：本技术 超宽pc片材的在线测厚系统 (Online thickness measuring system for ultra-wide PC sheet ) 是由 杨新生 于 2019-10-27 设计创作，主要内容包括：本发明涉及一种超宽PC片材的在线测厚系统,包括测厚仪、厚度变化监测装置,测厚仪安装在PC片材生产线上,测厚仪的探头位于检测口中,厚度变化监测装置安装在PC片材生产线上,且位于测厚仪的前方,厚度变化监测装置包括压臂、压辊、气缸,压臂的固定端通过转轴铰接在安装板上,安装板固定在PC片材生产线机架的横梁上,压臂的自由端上安装压辊,气缸的活塞杆与压臂的自由端铰接,气缸壳体通过铰接座固定在横梁上,转轴一端伸出安装板,且周向固定一个大链轮,安装板上偏于转轴通过轴承滑动配合链轮轴,链轮轴的一端周向固定一个小链轮,大链轮与小链轮之间设置链条传递动力,链轮轴的另一端与角度传感器连接,角度传感器将传动信号反馈给测厚仪。(The invention relates to an on-line thickness measuring system of an ultra-wide PC sheet, which comprises a thickness gauge and a thickness change monitoring device, wherein the thickness gauge is arranged on a PC sheet production line, a probe of the thickness gauge is positioned in a detection port, the thickness change monitoring device is arranged on the PC sheet production line and is positioned in front of the thickness gauge, the thickness change monitoring device comprises a pressure arm, a pressure roller and an air cylinder, the fixed end of the pressure arm is hinged on a mounting plate through a rotating shaft, the mounting plate is fixed on a cross beam of a PC sheet production line rack, the pressure roller is arranged at the free end of the pressure arm, a piston rod of the air cylinder is hinged with the free end of the pressure arm, an air cylinder shell is fixed on the cross beam through a hinge seat, one end of the rotating shaft extends out of the mounting plate and is circumferentially fixed with a large chain wheel, the eccentric to the rotating shaft on the mounting plate is in sliding fit with a chain wheel shaft through, the other end of the chain wheel shaft is connected with an angle sensor, and the angle sensor feeds back a transmission signal to the thickness gauge.)

1. The utility model provides an online thickness measuring system of super wide PC sheet which characterized in that: including calibrator (1), thickness change monitoring devices (2), calibrator (1) is installed on PC sheet production line, and calibrator (1) is equipped with the probe that is used for detecting PC sheet thickness, the probe is arranged in letting the detection mouth (1-1) that the PC sheet passed through that sets up on calibrator (1), and reciprocating motion detects the PC sheet of process about passing through the probe, thickness change monitoring devices (2) are installed on PC sheet production line, and are located the place ahead of calibrator (1), thickness change monitoring devices (2) are including pressing arm (3), compression roller (4), cylinder (5), the stiff end of pressing arm (3) articulates on a mounting panel (7) through pivot (6), mounting panel (7) are fixed on crossbeam (8) of PC sheet production line frame, the free end of pressing arm (3) is downward, install compression roller (4) on this free end, the piston rod of cylinder (5) is articulated with the free end of pressure arm (3), and cylinder (5) casing is fixed on crossbeam (8) through articulated seat (9), mounting panel (7) are stretched out to pivot (6) one end, and a fixed big sprocket (10) of circumference, mounting panel (7) are gone up partially pivot (6) and are passed through bearing sliding fit one sprocket shaft (11), the fixed little sprocket (12) of one end circumference of sprocket shaft (11), set up chain (13) transmission power between big sprocket (10) and little sprocket (12), the other end and an angle sensor (14) fixed connection of sprocket shaft (11), give thickness gauge (1) transmission signal feedback through angle sensor (14).

2. An on-line thickness measuring system for ultra-wide PC sheets as recited in claim 1, wherein: the chain tensioning mechanism is arranged between the chains (13) and comprises a bearing (13-1) and a sliding plate (13-2), the bearing (13-1) is used for tensioning the chains, the sliding plate (13-2) is matched with the bearing (13-1) through a fixed shaft, a strip-shaped hole (13-3) is formed in the sliding plate (13-2), and the sliding plate (13-2) penetrates through the strip-shaped hole (13-3) through a screw (13-4) to be connected and fixed with the mounting plate (7).

3. An on-line thickness measuring system for ultra-wide PC sheets as recited in claim 1, wherein: a cover (7-1) is fixedly arranged on the mounting plate (7), and the cover (7-1) covers the large chain wheel (10) and the small chain wheel (12).

4. An on-line thickness measuring system for ultra-wide PC sheets as recited in claim 1, wherein: the working state of the cylinder (5) is the same as the atmospheric pressure.

5. An on-line thickness measuring system for ultra-wide PC sheets as recited in claim 1, wherein: the transmission ratio of the large chain wheel (10) to the small chain wheel (12) is 10: 3.

Technical Field

The invention relates to the field of PC sheets, in particular to an online thickness measuring system for ultra-wide PC sheets.

Background

The PC sheet material is also called polycarbonate sheet material, is an amorphous, odorless, nontoxic and highly transparent colorless or yellowish thermoplastic engineering plastic, and is rapidly developed due to excellent physical, mechanical and thermal properties. At present, the width of an ordinary PC sheet is usually about 1m, the width of a production line of the PC sheet is relatively small, a thickness gauge is not specially arranged, a manual measurement mode is usually adopted for a produced PC sheet product, then the size of a die lip of a die is manually adjusted according to the thickness deviation of the manual measurement, so that the thickness of the product of the PC sheet is changed, the size of the die lip of the die can be adjusted only after the production line is stopped by the measurement mode, the automation degree is low, in addition, the efficiency of the manual measurement mode is low, the thickness change of the PC sheet cannot be monitored in real time, and the rejection rate of the PC sheet is easily high. In the production line of the ultra-wide PC sheet, hundreds of adjusting screws of the large-width die are obviously difficult to adjust manually, so that a thickness measuring system which can be applied to the production of the ultra-wide PC sheet is urgently needed.

Disclosure of Invention

The invention aims to provide an on-line thickness measuring system for an ultra-wide PC sheet, which can monitor the thickness change of the PC sheet in real time, can detect the thickness of the PC sheet on line through a thickness gauge and avoid the collision between a probe of the thickness gauge and the PC sheet.

The technical scheme of the invention is as follows: an on-line thickness measuring system of an ultra-wide PC sheet comprises a thickness measuring instrument and a thickness change monitoring device, wherein the thickness measuring instrument is arranged on a PC sheet production line and is provided with a probe for detecting the thickness of the PC sheet, the probe is positioned in a detection port which is arranged on the thickness measuring instrument and is used for allowing the PC sheet to pass through, the passing PC sheet is detected through the left-right reciprocating motion of the probe, the thickness change monitoring device is arranged on the PC sheet production line and is positioned in front of the thickness measuring instrument, the thickness change monitoring device comprises a pressing arm, a pressing roller and an air cylinder, the fixed end of the pressing arm is hinged on a mounting plate through a rotating shaft, the mounting plate is fixed on a cross beam of a PC sheet production line frame, the free end of the pressing arm faces downwards, the pressing roller is arranged on the free end, a piston rod of the air cylinder is hinged with the free end of the pressing arm, a cylinder shell is fixed, the mounting panel is stretched out to pivot one end, and a big sprocket of circumference fixed, a bearing sliding fit sprocket shaft is passed through to the pivot on the one side on the mounting panel, a little sprocket is fixed to the one end circumference of sprocket shaft, set up chain transmission power between big sprocket and the little sprocket, the other end and the angle sensor fixed connection of sprocket shaft feed back drive signal to the calibrator through angle sensor.

Be equipped with a straining device between the chain, straining device is including bearing, the slide that is used for the tensioning chain, the bearing passes through the dead axle cooperation on the slide, be equipped with a bar hole on the slide, the slide passes the bar hole through the screw and is connected fixedly with the mounting panel.

And a cover is fixedly arranged on the mounting plate and covers the large chain wheel and the small chain wheel.

The working state of the cylinder is the same as the pressure of the atmospheric pressure.

The transmission ratio of the large chain wheel to the small chain wheel is 10: 3.

Adopt above-mentioned technical scheme: the thickness change monitoring device comprises a pressing arm, a pressing roller and an air cylinder, wherein the fixed end of the pressing arm is hinged to a mounting plate through a rotating shaft, the pressing roller is mounted at the free end of the pressing arm, a piston rod of the air cylinder is hinged to the free end of the pressing arm, under the action of the air cylinder, after the pressing roller presses a PC sheet, the pressing roller keeps pressing on the PC sheet by means of self gravity, and along with the movement of the PC sheet, once a deformation part on the PC sheet is in contact with the pressing roller, the pressing roller can be lifted upwards, and therefore the pressing arm is driven to be lifted upwards. One end of the rotating shaft extends out of the mounting plate, a large chain wheel is fixed in the circumferential direction, and when the pressing arm is lifted upwards, the large chain wheel can be driven to rotate through the rotating shaft. The installation board goes up to the revolving shaft and passes through a bearing sliding fit sprocket shaft, the fixed little sprocket of one end circumference of sprocket shaft, set up chain transmission power between big sprocket and the little sprocket, big sprocket rotates and will pass through chain drive little sprocket, and the rotational speed of little sprocket is greater than big sprocket to the messenger transmits the rotation signal amplification on the little sprocket from the compression roller, even very slight rotation takes place for the compression roller, also can be through the transmission between big sprocket and the little sprocket with signal amplification. The other end and an angle sensor fixed connection of sprocket shaft, the transmission signal through little sprocket amplification passes through the sprocket shaft and transmits for angle sensor, can calculate the distance that the compression roller upwards uplift removed through angle sensor, thereby feed back this transmission signal to the calibrator through angle sensor, because thickness change monitoring devices installs on PC sheet production line, and be located the place ahead of calibrator, therefore, after the calibrator received the signal of angle sensor feedback, just can make the probe of reciprocating motion about removing to the one end of calibrator, prevent that the probe from colliding the deformation portion of PC sheet, avoid damaging the probe. And after the deformation part of the PC sheet is separated from the lower part of the press roller, the press roller presses the PC sheet by gravity again, and the real-time monitoring on the PC sheet is continuously carried out. After passing through the thickness change monitoring device, the PC sheet is moved into a detection port of the thickness gauge, the passing PC sheet is subjected to thickness detection through the left-right reciprocating motion of the probe, and the thickness deviation detected by the thickness gauge is fed back to the automatic die.

Be equipped with a straining device between the chain, straining device is including bearing, the slide that is used for the tensioning chain, the bearing passes through the dead axle cooperation on the slide, be equipped with a bar hole on the slide, the slide passes the bar hole through the screw and is connected fixedly with the mounting panel. The tensioning mechanism is arranged between the chains, so that the pretension of the chains can be ensured, the chains are prevented from slipping, and the transmission between the large chain wheel and the small chain wheel is ensured.

A cover is fixedly installed on the installation plate and covers the large chain wheel and the small chain wheel, and the large chain wheel and the small chain wheel are protected.

The pressure of cylinder during operating condition is the same with atmospheric pressure, avoids causing the influence because of the air pressure of cylinder to the rotation of compression roller, guarantees that the compression roller is when meetting the slight deformation of PC sheet, also can take place slight rotation.

The invention is further described with reference to the drawings and the specific embodiments in the following description.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the thickness variation monitoring device of the present invention;

fig. 3 is a side view of a thickness variation monitoring apparatus of the present invention.

In the attached drawing, 1 is a thickness gauge, 1-1 is a detection port, 2 is a thickness change monitoring device, 3 is a pressing arm, 4 is a pressing roller, 5 is an air cylinder, 6 is a rotating shaft, 7 is an installation plate, 7-1 is a cover, 8 is a cross beam, 9 is a hinged seat, 10 is a large chain wheel, 11 is a chain wheel shaft, 12 is a small chain wheel, 13 is a chain, 13-1 is a bearing, 13-2 is a sliding plate, 13-3 is a strip-shaped hole, 13-4 is a screw, 14 is an angle sensor, and 15 is a carrier roller.

Detailed Description

Referring to fig. 1 to 3, an on-line thickness measuring system for ultra-wide PC sheets includes a thickness gauge 1 and a thickness variation monitoring device 2. The thickness gauge 1 is installed on a PC sheet production line, the thickness gauge 1 is provided with a probe for detecting the thickness of the PC sheet, the probe is positioned in a detection port 1-1 which is arranged on the thickness gauge 1 and allows the PC sheet to pass through, the passing PC sheet is detected through the left-right reciprocating motion of the probe, and the thickness gauge 1 feeds back the thickness deviation of the PC sheet detected by the scanning of the probe to the automatic die, so that the automatic die automatically adjusts the extrusion thickness of the raw material. The thickness change monitoring device 2 comprises a pressing arm 3, a pressing roller 4 and a cylinder 5. The fixed end of the pressure arm 3 is hinged on a mounting plate 7 through a rotating shaft 6, the mounting plate 7 is fixed on a cross beam 8 of a PC sheet production line frame, the free end of the pressure arm 3 faces downwards, a pressure roller 4 is mounted on the free end, a piston rod of the air cylinder 5 is hinged with the free end of the pressure arm 3, a shell of the air cylinder 5 is fixed on the cross beam 8 through a hinge seat 9, the pressure roller 4 is pressed on one side of the PC sheet under the action of the air cylinder 5, the other side of the PC sheet is supported by a group of carrier rollers 15, the pressure of the air cylinder 5 is the same as the pressure of the atmospheric pressure in the working state, the pressure roller 4 is pressed on the PC sheet by the gravity of the pressure roller 4, if the pressure roller 4 is contacted with a deformation part on the PC sheet, the deformation part can enable the pressure roller 4 to move upwards, so as to drive the free end of the pressure, so that the lifting of the press arm 3 causes the rotation of the rotary shaft 6. The mounting panel 7 is stretched out to pivot 6 one end, and a big sprocket 10 is fixed to circumference, and pivoted pivot 6 just can drive big sprocket 10 and rotate. The epaxial pivot 6 of deviating from on the mounting panel 7 passes through a chain wheel shaft 11 of bearing sliding fit, a little sprocket 12 of one end circumference fixed of chain wheel shaft 11, set up chain 13 transmission power between big sprocket 10 and the little sprocket 12, the pivoted big sprocket 10 takes place to rotate through chain 13 drive little sprocket 12, and the speed of transmitting for little sprocket 12 is greater than big sprocket 10's speed far away to take place pivoted signal amplification with compression roller 4 through little sprocket 12, even compression roller 4 takes place slight rotation, also can be through big sprocket 10 and little sprocket 12's transmission with rotating signal amplification. The transmission ratio of the large chain wheel 10 to the small chain wheel 12 is 10:3, so that the small chain wheel 12 can amplify the rotation signal of the large chain wheel 10 to a sufficient multiple, and a sensor can recognize the rotation signal. The other end of sprocket shaft 11 and an angle sensor 14 fixed connection, angle sensor 14 and thickness gauge 1 can adopt connection methods such as electricity connection or wireless signal connection to make angle sensor 14 feed back drive signal to thickness gauge 1, the drive signal through little sprocket 12 enlargies transmits for angle sensor 14 through sprocket shaft 11, can calculate the distance that compression roller 4 moved upwards through angle sensor 14, thereby feed back this drive signal to thickness gauge 1 through angle sensor 14. The thickness change monitoring device 2 is installed on a PC sheet production line and is positioned in front of the thickness gauge 1, the formed PC sheet is judged whether to deform or not through the thickness change monitoring device 2, and the PC sheet is scanned and detected by a probe in the detection port 1-1 when the formed PC sheet moves to the detection port 1-1 of the thickness gauge 1. When the PC sheet material is deformed, the thickness measuring instrument 1 receives the signal fed back by the angle sensor 14, so that the probe can avoid the deformed part of the PC sheet material in time, and the probe is prevented from being damaged due to collision with the deformed part.

A tensioning mechanism is arranged between the chains 13, the tensioning mechanism comprises a bearing 13-1 and a sliding plate 13-2, the bearing 13-1 is used for tensioning the chains 13, the sliding plate 13-2 is matched with the bearing 13-1 through a fixed shaft, a strip-shaped hole 13-3 is formed in the sliding plate 13-2, the sliding plate 13-2 penetrates through the strip-shaped hole 13-3 through a screw 13-4 to be connected and fixed with the mounting plate 7, and the tensioning mechanism is arranged between the chains 13, so that the pretension of the chains 13 can be ensured, the chains 13 are prevented from slipping, and the effective transmission between the large chain wheel 10 and the small chain wheel 12 is ensured. When the tensioning degree of the tensioning mechanism and the chain 13 needs to be adjusted, the position of the screw 13-4 in the strip-shaped hole 13-3 can be changed by sliding the sliding plate 13-2 only by screwing the screw 13-4 out of the mounting plate 7 for a certain distance, and then the screw 13-4 is screwed, so that the tensioning force between the bearing 13-1 and the chain 13 can be changed. A cover 7-1 is fixedly arranged on the mounting plate 7, the cover 7-1 and the mounting plate 7 can be connected through bolts, and the cover 7-1 covers the large chain wheel 10 and the small chain wheel 12 to protect the large chain wheel 10 and the small chain wheel 12.

When the thickness gauge is used, firstly, before production, the compression roller 4 is lifted to a height which can not contact with a PC sheet material through the air cylinder 5, and the probe of the thickness gauge 1 is positioned at one end of the thickness gauge 1 and does not perform scanning movement; after the PC sheet is flat and free from deformation after initial operation, the compression roller 4 and the carrier roller 15 are jointly acted to respectively press the two sides of the PC sheet under the action of the air cylinder 5, then the air cylinder 5 is cut off and is in a normal pressure state, the compression roller 4 presses the PC sheet by means of the gravity of the compression roller 4, the probe of the thickness gauge 1 reciprocates left and right, and the PC sheet is scanned for thickness detection; when the PC sheet is deformed, because the carrier roller 15 is fixed, the compression roller 4 can be lifted upwards when the deformation part moves to the position of the compression roller 4, then the micro rotation generated by the compression roller 4 is transmitted to the large chain wheel 10 through the compression arm 3, the large chain wheel 10 drives the small chain wheel 12 to rotate through the chain 13, so that the rotation signal is amplified through the small chain wheel 12, the amplified signal is fed back to the angle sensor 14 by the chain wheel shaft 11 rotating along with the small chain wheel 12, the distance of the upward lifting of the compression roller 4 is calculated by the angle sensor 14, the signal is fed back to the thickness gauge 1, because the distance between the probe of the thickness gauge 1 and the PC sheet is small, the thickness gauge 1 can judge whether the avoiding action is needed according to the signal fed back by the angle sensor 14, if the deformation part is large, the probe of the thickness gauge 1 rapidly moves to one end of the thickness gauge 1, the moving scanning is temporarily stopped, the probe is prevented from colliding with the deformed portion of the sheet until the deformed portion leaves the thickness gauge 1. After the deformed part of the PC sheet is separated from the lower part of the press roller 4, the press roller 4 presses on the PC sheet again by means of gravity, and real-time monitoring on the PC sheet is continued.

In a PC sheet production line, the thickness gauge 1 can detect the thickness of the sheet on line, and detection data is fed back to an automatic die, so that the automatic die can adjust the extrusion amount of raw materials in time, the automation degree is high, the production efficiency is high, and the rejection rate can be greatly reduced. The PC sheet is inevitably subjected to wave-shaped deformation in the production process, the rigidity of a deformation part is high, the strength is high, the distance between a probe of the thickness gauge 1 and the PC sheet is small, and the probe is expensive. In addition, the invention can be applied to various sheet production lines, has wide application occasions, and can greatly reduce the labor cost and improve the production efficiency.