Automatic fabric folding device

An automatic fabric folding device has a rotating mechanism, an automatic folding mechanism and a crease generating mechanism. The automatic folding mechanism is located below the finger cylinder on one side of the rotating mechanism, and the finger cylinder on the other side of the automatic folding mechanism is fixed with a crease generating mechanism. The two rotating cylinders are central symmetrical with the rotating arm. This accurately controls the bending and folding of the fabric sample through the automatic control technology, and realizes the automatic detection of the fabric crease recovery process. By mechanical and numerical control technology, the parts to be measured are effectively prevented from interference by human factors, and the detection accuracy is improved.

TECHNICAL FIELD

The invention belongs to the field of textile performance testing, and relates to an automatic fabric folding device and detection method.

BACKGROUND TECHNOLOGY

The crease recovery property of fabrics is regarded as one of the key properties in fabric quality testing. The specified size samples are manual cut and folded into the pressing device. When a certain pressure time is reached, the samples are transferred to the measuring device artificially and the results of the crease recovery angle test are obtained by artificial reading. In the process of testing, the samples are repeatedly touched by human, which causes large errors in the test results. Although some of the existing testers for evaluating fabric crease recovery performance have realized the functions of automatic pressing and pressure relief, manual operation is still needed to make the sample form a bending and folding state. In the operation, it is unavoidable that the state of the fabric is affected by manual factors, especially the position where the creases will emerge and this will cause unstable and unreliable experimental results. In view of the above shortcomings, the present invention provides a novel fabric automatic precise folding method, greatly improving the automation extent of the fabric performance testing equipment and ensuring that the fabrics are not disturbed by human factors in the process of measuring the crease recovery performance.

SUMMARY OF THE INVENTION

The invention provides an automatic fabric folding device and detection method, which automatically folds the two sides of a flat fabric to produce creases to assess the crease recovery performance of the fabric.

The automatic fabric folding device comprises a rotating mechanism, an automatic folding mechanism and a crease generating mechanism. The automatic folding mechanism is located below the finger cylinder on one side of the rotating mechanism, and a second cylinder on the other side of the automatic folding mechanism is adjacent to a crease generating mechanism. Two sets of automatic fabric folding device are set symmetrically on the horizontal plane, which can simultaneously fold fabrics to improve efficiency.

The rotating mechanism comprises a first turntable, a first metal sheet, a first finger cylinder, a first rotating cylinder, a second rotating cylinder, a second finger cylinder and a second metal sheet.

The rotating arm is fixed above the first turntable. The two ends of the rotating arm are respectively fixed with the first rotating cylinder and the second rotating cylinder. The two rotating cylinders are centrally symmetrical with the rotating arm. The first turntable rotates to drive the two rotating cylinders to rotate. an output end of the first rotating cylinder is fixed with the first finger cylinder, and an output end of the second rotating cylinder is fixed with the second finger cylinder. The first rotating cylinder is adapted to rotate the first finger cylinder between a vertical and a horizontal orientation, and the second rotating cylinder is adapted to rotate the second finger cylinder between a vertical and a horizontal orientation.

The finger cylinder can clamp the sample on both sides of the metal sheet, and the metal sheet is in the middle of the folding sample to prevent the sample from boning. The rotating cylinder makes the sample clamped by the finger cylinder rotate 90°, forming a state that the crease is perpendicular to the horizontal plane. Thus, the test results are not affected by the weight of the sample when the recovery angle is tested. The turntable transports the sample from the automatic folding mechanism to the crease generating mechanism.

The automatic folding mechanism comprises a first servo motor, a first lifting platform, a first vacuum turning platform and a first sample positioning block.

The first servo motor and the first sample positioning block are fixed on the upper surface of the first lifting platform. The first sample positioning block is located at the output end of the first servo motor and below the first finger cylinder. The output end of the first servo motor is fixed with a first vacuum turning platform, and the other ends of the first and second vacuum turning platforms are fixed with a synchronous gear separately. The first and second turning platforms are driven by the first servo motor through the synchronous gears. The first and second vacuum turning platforms are horizontally fixed above the first sample positioning block, and the metal sheets are vertically fixed between them. The first vacuum turning platform is square block, with air suction holes on one side of the square block, and the air suction holes are connected with the air suction fan, and the sample is placed on the first vacuum turning platform. The suction holes absorb the two sides of the sample to make the two sides of the sample aligned during the turning process of the first vacuum turning platform to prepare for accurate folding of the sample.

The first lifting platform makes the sample placed on the surface of the first vacuum turning platform rise to the position where the first finger cylinder can clamp the sample. The vacuum turning platform can effectively adsorb both ends of the sample, thus forming the bending shape of the sample, and the sample positioning block plays the role of fixing the position of the sample.

The crease generating mechanism comprises the first pressing cylinder and the first electromagnetic support block. The first pressing cylinder and the first electromagnetic support block are fixed on the top of the crease bracket. The first pressing cylinder and the first electromagnetic support block are set correspondingly and at the level of the finger cylinder of the rotating mechanism. When the finger cylinder holds the metal sheet and rotates 90° vertically, the metal sheet is located in the gap between the first pressing cylinder and the first electromagnetic support block. Pressing cylinder is used to exert constant pressure on the sample. Electromagnetic support block is used to absorb the metal sheet, so that one side of the sample is clamped between the metal sheet and the electromagnetic support block, which plays the role of fixing the sample in the recovery testing process.

Furthermore, the vacuum turning platform has three parallel suction holes, which are located at the edge of the vacuum turning platform.

The detection method of automatic fabric folding device is as follows:

Step 1: Place the fabric sample on the surface of the first vacuum turning platform and open the measuring machine.

Step 2: The suction holes of the first vacuum turning platform absorb both ends of the sample.

Step 3: The first lifting platform rises, and the first servo motor drives the synchronous gear, which makes the first vacuum turning platform turn over and drives the sample to form a folding state. The first metal sheet is located between the samples.

Step 4: The first finger cylinder holds both sides of the sample folded together.

Step 5: The first vacuum turning platform closes the vacuum, the first servo motor drives the first vacuum turning platform to turn in reverse to restore the open state, and the first lifting platform descends.

Step 6: The first turntable rotates 180°, and the sample is held by the first finger cylinder and transported to the crease generating mechanism.

Step 7: The first rotating cylinder rotates 90°. The sample is placed between the first pressing cylinder and the first electromagnetic support block. The first electromagnetic support block is opened so that the first electromagnetic support block can absorb the first metal sheet. Then part of the sample is stably clamped on the crease generating mechanism.

Step 8: The first pressing cylinder is started to pressurize the sample. At the same time, the first finger cylinder is released to stop holding the sample.

Step 9: When the pressure time is reached, the first pressure cylinder is released, the first electromagnetic support block still absorbs the first metal sheet, the fabric sample is in the state of free recovery of creases, and the camera records the state of sample recovery process.

Step 10: When the fabric sample is restored freely for a period of time, the electromagnet of the first electromagnetic support block is released, and the first rotating cylinder rotates 90° to return to its initial state.

Step 11: When the first lifting platform descends, the next sample can be placed on the upper surface of the first vacuum turning platform. Repeat steps 2 to 10.

The present invention accurately controls the bending and folding of the fabric sample by the automatic control technology, and realizes the automatic detection of the fabric crease recovery process. By means of mechanical and numerical control technology, the parts to be measured are effectively prevented from interference by human factors, and the detection accuracy is improved.

DETAILED DESCRIPTION

The present invention is further described in detail below in connection with specific embodiments and with reference to the accompanying drawings.

As shown in the figures, the first set of rotating mechanism comprises the first turntable1, the first metal sheet5, the first finger cylinder6, the first rotating cylinder7, the second rotating cylinder8, the second finger cylinder9and the second metal sheet11.

The rotating arm is fixed above the first turntable1. The two ends of the rotating arm are respectively fixed with the first rotating cylinder7and the second rotating cylinder8. The two rotating cylinders are centrally symmetrical with the rotating arm. The first turntable1rotates to drive the two rotating cylinders to rotate. an output end of the first rotating cylinder7is fixed with the first finger cylinder6, and an output end of the second rotating cylinder8is fixed with the second finger cylinder9. The direction of the two finger cylinders is perpendicular to the horizontal plane. The rotating cylinder drives the finger cylinder to rotate 90° vertically, so that the finger cylinder is parallel to the horizontal plane.

The finger cylinder can clamp the sample on both sides of the metal sheet, and the metal sheet is in the middle of the folding sample to prevent the sample from bonding. The rotating cylinder makes the sample clamped by the finger cylinder rotate 90°, forming a state that the crease is perpendicular to the horizontal plane, so that the test results of the recovery angle test to be independent of the weight of the sample. The turntable transfers the sample from the automatic folding mechanism to the crease generating mechanism.

The second set of rotating mechanism comprises the second turntable2, the fourth metal sheet14, the fourth finger cylinder16, the fourth rotating cylinder17, the third rotating cylinder18, the third finger cylinder19and the third metal sheet20.

The first set of automatic folding mechanism comprises the first servo motor3, the first lifting platform4, the first vacuum turning platform23and the first sample positioning block24.

The first servo motor3and the first sample positioning block24are fixed on the upper surface of the first lifting platform4. The first sample positioning block24is located at the output end of the first servo motor3and below the first finger cylinder6. The output end of the first servo motor3is fixed with a first vacuum turning platform23, and the other ends of the first vacuum turning platform23are fixed with synchronous gears27separately. The first vacuum turning platform23are driven by the first servo motor3through the tooth engagement of synchronous gear27; the second vacuum turning platform23are horizontally fixed above the first sample positioning block24, and the metal sheet5is vertically fixed between them; the first vacuum turning platform23is square block, with air suction holes on one side of the square block, and the air suction holes are connected with the air suction fan. The sample is placed on the first vacuum turning platform23, the suction holes absorb both sides of the sample to make the two sides of the sample aligned during the turning process of the first vacuum turning platform23to prepare for the accurate folding of the sample.

The first lifting platform4makes the sample placed on the surface of the first vacuum turning platform23rise to the position where the first finger cylinder6can clamp the sample. The vacuum turning platform achieves effective adsorption on both ends of the sample folding, thus forming the bending shape of the sample, and the sample positioning block plays the role of fixing the sample position.

The second set of automatic folding mechanism comprises the second servo motor21, the second lifting platform22, the second vacuum turning platform25and the second sample positioning block26.

The first set of crease generating mechanism comprises the first pressing cylinder10and the first electromagnetic support block12. The second pressing cylinder15and the second electromagnetic support block13are fixed above the crease bracket. The second pressing cylinder15and the second electromagnetic support block13are set correspondingly and at the level of the fourth finger cylinder16of the rotating mechanism. When the finger cylinder clamps the metal sheet and rotates 90° vertically, the metal sheet is located in the gap between the second pressing cylinder15and the second electromagnetic support block13. Pressing cylinder is used to exert constant pressure on the sample. Electromagnetic support block is used to absorb the metal sheet, so that one side of the sample is clamped between the metal sheet and the electromagnetic support block, which plays the role of fixing the sample during the recovery test. The second set of crease generating mechanism comprises the second pressing cylinder15and the second electromagnetic support block13.

A fabric automatic accurate folding method is described in the following steps:

Step 1: Place the first fabric sample of specified size in the first vacuum turning platform23, and the second sample in the second vacuum turning platform25. Open the measuring machine.

Step 2: The suction holes of the first vacuum turning platform23absorb both ends of the first sample.

Step 3: The first lifting platform4rises, and the first servo motor3drives the synchronous gear, which makes the first vacuum turning platform23turn over and drives the first sample to form a folding state.

Step 4: The first finger cylinder6holds both sides of the first sample folded together.

Step 5: The first vacuum turning platform23closes the vacuum, the first servo motor3drives the first vacuum turning platform23to turn in reverse to restore the open state, and the first lifting platform4descends.

Step 6: The first turntable1rotates 180°, and the first sample is held by the first finger cylinder6and transported to the position of the crease generating mechanism.

Step 7: The first rotating cylinder7rotates 90°, transfers the first sample into the pressure waiting area, and opens the electromagnet of the first electromagnetic support block12. Thus, the first electromagnetic support block12absorbs the first metal sheet5, then part of the first sample is stably clamped on the crease generating mechanism.

Step 8: The first pressure cylinder10is started to pressurize the first sample. At the same time, the first finger cylinder6is released, stopping holding the first sample.

Step 9: When the pressure time is reached, the first pressing cylinder10is released, the first electromagnetic support block12still absorbs the first metal sheet5, the first sample is in the state of free recovery of creases, and the camera records the state of the recovery process of the first sample.

Step 10: When the first sample is free to recover for a period of time, the first electromagnet is released by the electromagnet of block12, and the first rotating cylinder7rotates 90° to return to its initial state.

Step 11: When the first sample is pressurized, the second sample is in the second vacuum turning platform25, and the suction holes of the second vacuum turning platform25absorb both ends of the second sample.

Step 12: The second lifting platform22rises, and the second servo motor21drives the synchronous gear, which makes the second vacuum turning platform25turn over and drives the second sample to form a folding state.

Step 13: The third finger cylinder19holds both sides of the second sample folded together.

Step 14: The second vacuum turning platform25closes the vacuum, the second servo motor21drives the second vacuum turning platform25to turn in reverse to restore the open state, and the second lifting platform22descends.

Step 15: The second turntable2rotates 180°. The second sample is held by the third finger cylinder19and transported to the position of crease generating mechanism.

Step 16: The third rotating cylinder18rotates 90°, transfers the second sample into the pressure waiting area, opens the electromagnet of the second electromagnetic support block13at the same time, makes the second electromagnetic support block13absorb the third metal sheet20, then part of the second sample is stably clamped on the crease generating mechanism.

Step 17: The second pressing cylinder15is started to pressurized the second sample. Meanwhile, the third finger cylinder19is released, stopping holding the second sample.

Step 18: In the process of pressing the second sample, the first sample is tested and the whole test platform is shifted so that the second sample can enter the camera field of vision.

Step 19: When the second sample reaches the pressure time, the second pressing cylinder15is released, the second electromagnetic support block13still absorbs the third metal sheet20, and the second sample is in the state of free recovery of creases. The camera records the recovery process of the second sample.

Step 20: After the free recovery of the second sample for a period of time, the electromagnet of the second electromagnetic support block13is released, and the third rotating cylinder18rotates 90° to return to its initial state.

Step 21: When the first lifting platform4descends, the third sample can be placed in the first vacuum turning platform23.

Step 22: The suction holes of the first vacuum turning platform23absorb both ends of the third sample.

Step 23: The first lifting platform4rises, and the first servo motor3drives the synchronous gear, which makes the first vacuum turning platform23turn over and drives the third sample to form a folding state.

Step 24: The second finger cylinder9holds both sides of the third sample folded together.

Step 25: The first vacuum turning platform23closes the vacuum, the first servo motor3drives the first vacuum turning platform23to turn in reverse, to restore the open state, and the first lifting platform4descends.

Step 26: The first turntable1rotates 180°, and the third sample is held by the second finger cylinder9and transported to the position of the crease generating mechanism.

Step 27: The second rotating cylinder8rotates 90°, transfers the third sample into the pressure waiting area, and opens the electromagnet of the first electromagnetic support block12, so that the first electromagnetic support block12absorbs the second metal sheet11, then part of the third sample is stably clamped on the crease generating mechanism.

Step 28: The first pressure cylinder10is started to pressurize the third sample. Meanwhile, the second finger cylinder9is released, stopping holding the third sample.

Step 29: During the third sample pressurization process, the second sample is tested, and the whole test platform is shifted back to its original position, so that the third sample can enter the camera field of vision.

Step 30: After the third sample reaches the pressure time, the first pressing cylinder10is released, the first electromagnetic support block12still absorbs the second metal sheet11, and the third sample is in the state of free recovery of creases. The camera records the recovery process of the third sample.

Step 31: When the third sample is restored freely for a period of time, the electromagnet of the first electromagnetic support block12is released, and the second rotating cylinder8rotates 90° to return to its initial state.

Step 32: When the second lifting platform22descends, the fourth sample can be placed in the second vacuum turning platform25and tested according to this method.